A friction material with reduced storage time is described, comprising a binder composition based on a hydraulic binder and its use in brake pads and industrial applications.
C04B 22/14 - Acids or salts thereof containing sulfur in the anion, e.g. sulfides
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
A braking system for motorcycles may have a first manual actuator device selectively connectable to at least a first braking device and/or at least a second braking device. The first manual actuator device may be provided with a hydraulic supply circuit that can be selectively connected to a hydraulic input circuit of at least one of the braking devices. The system may also have at least one electro-hydraulic automatic actuator device and at least one electromechanical automatic actuator device. The system may also have a single control unit operatively connected to the control valve, to the at least one electro-hydraulic automatic actuator device, to the at least one electromechanical automatic actuator device and to the first manual actuator device to operate the electro-hydraulic and electromechanical automatic actuator devices and the control valve according to the configuration of the first manual actuator device and/or according to the dynamics of the motorcycle.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
A device for automatically adjusting the clearance of a drum brake 1 comprises - an extendable strut assembly 2 comprising a toothed ring 6, said extendable strut assembly 2 being arranged between a first and a second shoe 38, 39 which cooperate with a braking surface 37 of a drum 36, said shoes 38, 39 being moved by an actuating device 40 which biases them from a resting position, in which the shoes 38, 39 are distanced from said braking surface 37 at least by a minimum operating clearance 44, to a braking position, in which the shoes 38, 39 abut against said braking surface 37, and wherein said strut assembly 2 is subjected to a compression action Fc applied by said shoes 38, 39, and wherein a rotation of said toothed ring 6 is blocked thus preventing an extension of said extendable strut assembly 2 when said compression action Fc is higher than a predetermined threshold Fs; said adjustment device 1 further comprises: - a first lever assembly 17 associated with said extendable strut assembly 1 and having a ratchet mechanism 19 at an end thereof operatively in contact with said toothed ring 6, - a second lever assembly 20 hinged to said first shoe 38 and comprising a coupling portion 28 at a first end 26 of second lever assembly, wherein said coupling portion 28 is rotationally biased by said shoes 38, 39 when said shoes 38, 39 are biased by said actuating device 40, a connecting member 29 connected to said first lever assembly 17 and comprising a connecting seat 30 adapted to connect said second lever assembly 20, wherein said coupling portion 28 is coupled to said connecting seat 30 with a predetermined functional clearance 45 so that when said shoes 38, 39 move by action of said actuating device 40 from said resting position approaching said braking surface 37 by said minimum operating clearance 44, said coupling portion 28 slides in said connecting seat 30 with an idle stroke equal to said functional clearance 45 without transmission of motion to said connecting member 29 and to said first lever assembly 17 and wherein said second lever assembly 20 is configured to transmit motion at least to said connecting device 29 after said coupling portion 28 has covered said idle stroke equal to said functional clearance 45.
F16D 65/54 - Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
F16D 65/56 - Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
F16D 51/48 - Self-tightening brakes with pivoted brake-shoes with two linked or directly-interacting brake-shoes
F16D 51/24 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots fluid actuated
F16D 51/14 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as exclusively radially-movable brake-shoes fluid actuated
F16D 51/20 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
F16D 65/22 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart
6.
BRAKING BAND OF A DISC FOR DISC BRAKE OF VENTILATED TYPE
A braking band (1) of a disc brake disc of a ventilated type unusually capable of avoiding vibrations which induce annoying squeals during the braking action, said braking band (1) extending between an inner diameter (D1), near a rotation axis (X-X) of the braking band (1), and an outer diameter (D2), far from said rotation axis (X-X); said braking band (1) comprising two plates (3, 4) facing each other; said plates comprising inner surfaces (5, 6) directly or indirectly facing each other and delimiting a gap (7); said plates being joined to each other by heat dissipating and connecting elements (16, 17, 19), said connecting elements project from a plate reaching the opposite plate, thereby forming bridges which connect the plates to each other; wherein a first series of fins (18) of said connecting elements is each a fin (19) which is in a single piece and extends from near said inner diameter to near said outer diameter; and wherein each of said fins (19) of said first series of fins (18) comprises a fin outer end portion (20) located near said outer diameter; the fin outer end portion (20) of said fin (19) comprises a predetermined extension along the outer circumferential direction; said fin (19) comprises a fin inner end portion (21) located near said inner diameter; said fin inner end portion (21) of said fin (19) comprises a predetermined extension along the inner circumferential direction; wherein considering a section taken along a section plane comprising a radial (R-R) and circumferential (C-C) direction, section made by passing through a mean air flowpoint which runs through said gap, said outer circumferential width is greater than said inner circumferential width; and wherein said fin outer end portion (20) of said each fin (19) of said first series of fins (18) faces only an adjacent fin (19) of said first series of fins (18) on both sides in circumferential direction (C-C).
The present invention relates to a braking band (1) of a disc brake disc (2) of a ventilated type unusually capable of avoiding vibrations which induce annoying squeals during the braking action, said braking band (1) extending between an inner diameter (D1), near a rotation axis (X-X) of the braking band (1), and an outer diameter (D2), far from said rotation axis (X-X), said rotation axis defining an axial direction (X-X); said braking band (1) defining a radial direction (R-R) which is substantially orthogonal to said axial direction (X-X), and a circumferential direction (C-C) which is orthogonal both to said axial direction (X-X) and to said radial direction (R-R); said braking band (1) comprising two plates (3, 4) facing each other; said plates (3, 4) comprising inner surfaces (5, 6), either directly or indirectly facing and delimiting a gap (7); said plates (3, 4) being joined to each other by heat-dissipating and connecting elements (16, 17, 18, 19), also named connecting elements; - said connecting elements (16, 17, 18, 19) project from a plate towards the opposite plate, thereby forming bridges which connect the plates (3, 4) to each other; wherein at least one of said connecting elements is a fin (19) which is in a single piece and extends from near said inner diameter (D1) to near said outer diameter (D2); and wherein said fin (19) comprises a fin outer end portion (20) located near said outer diameter (D1); the fin outer end portion (20) of said fin (19) comprises a predetermined extension along the outer circumferential direction, i.e. an outer circumferential width (Lo); said fin (19) comprises a fin inner end portion (21) located near said inner diameter (D1); said fin inner end portion (21) of said fin (19) comprises a predetermined extension along the inner circumferential direction, i.e. an inner circumferential width (Li); wherein considering a section taken along a section plane comprising a radial (R-R) and circumferential (C-C) direction, section made by passing through a mean air flow point which runs through said gap, said outer circumferential width (Lo) is greater than said inner circumferential width (Li).
SCUOLA SUPERIORE DI STUDI UNIVERSITARI E DI PERFEZIONAMENTO SANT'ANNA (Italy)
Inventor
Camozzi, Francesco
Szewczyk, Beniamin
Faralli, Stefano
Di Pasquale, Fabrizio
Nannipieri, Tiziano
Abstract
A method for interrogating at least one optical fiber sensor of the Fiber Bragg Grating type FBG is described. The method comprises the steps of: lighting the optical fiber sensor of the Fiber Bragg Grating type FBG with a broadband excitation optical radiation OA; conveying the optical spectrum transmitted OT or reflected OR by the optical fiber sensor FBG to at least one tunable optical bandpass filter BPF having a first extraction port 1 and a second transmission port 2, which are complementary to each other; tuning the optical bandpass filter BPF at a constant operating wavelength, depending on the nominal operating wavelength of the fiber Bragg grating of the FBG sensor; detecting a respective first optical signal L1 exiting the first extraction port 1 of the optical bandpass filter; converting, by means of a first opto-electronic receiver PD1, the aforesaid first optical signal L1 into a respective first electrical signal E1, representative of a wavelength shift Ah, with respect to the nominal operating wavelength, of the spectrum reflected or transmitted by the Bragg grating of the FBG optical fiber sensor. The method then comprises the steps of detecting a second optical signal L2, exiting the second transmission port 2 of the optical bandpass filter BPF, spectrally complementary to the first optical signal L1; and converting this second optical signal L2, by means of a second opto-electronic receiver PDT, into a respective second electrical signal E2, representative of an optical reference power, which is substantially independent of the filtering wavelength, and having a dependence on the power of the broadband excitation optical radiation, and on the losses of the overall optical path, equal to the dependence undergone by the respective first electrical signal E1. The method includes determining the wavelength shift Ah, with respect to the nominal operating wavelength, of the spectrum reflected or transmitted by the optical fiber sensor FBG, based on the first electrical signal and the second electrical signal detected, in such a way that the detection of the first electrical signal is compensated for with respect to variations of optical radiation power and variations in loss on the optical path. A corresponding system for interrogating at least one optical fiber sensor of the Fiber Bragg Grating type FBG is also described, wherein the aforesaid optical bandpass filter BPF and the aforesaid first and second opto-electronic receiver PD1, PDT are integrated in a photonic integrated circuit ("Photonic Integrated Circuit" - PIC).
G01D 5/353 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using optical means, i.e. using infrared, visible or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
9.
BRAKING BAND OF A DISC FOR DISC BRAKE OF VENTILATED TYPE
The object of the present invention is a braking band (1) of a disc brake disc (2) of ventilated type unusually able to avoid vibrations which induce annoying whistling during the braking action, said braking band (1) extending between an inner diameter (D1), near a rotation axis (X-X) of the braking band (1), and an outer diameter (D2), far from said rotation axis (X-X), said rotation axis defining an axial direction (X-X); said braking band (1) defining a radial direction (R-R), substantially orthogonal to said axial direction (X-X), and a circumferential direction (C-C), orthogonal to said axial direction (X-X) and to said radial direction (R-R); said braking band (1) comprising two mutually facing plates (3, 4); said plates (3, 4) comprising inner surfaces (5, 6), either directly or indirectly facing and delimiting a gap (7);said plates (3, 4) comprising outer surfaces (8, 9); said outer surfaces (8, 9) comprise flat and opposite circumferential portions which form braking surfaces (10, 11); said plates (3, 4) comprising a plate body (12, 13) having an extension in axial direction (X-X) or plate thickness (14, 15); said plates (3, 4) being joined to each other by heat dissipating elements or connecting elements (16, 17, 18, 19); said connecting elements (16, 17, 18, 19) being shaped as columns and/or ribs which project from a plate towards the opposite plate in the form of bridges which connect the plates (3, 4); in which one of the plates (3; 4) comprises at least one ridge (20, 21, 22) which projects from said plate (3; 4) into said gap (7) without reaching the opposite plate (4; 3), whereby forming at least one localized narrowing of said gap (7) and a thickening of the plate body (12; 13), whereby creating a localized increase of said plate thickness (14; 15); and in which at least one ridge (20, 21, 22) extends at least from a first connecting element (16, 17, 18, 19) to an adjacent connecting element (16, 17, 18, 19) connecting said connecting elements (16, 17, 18, 19); and in which at least one ridge (20, 21, 22) extends at least along said circumferential direction (C-C) connecting at least two adjacent connecting elements (16, 17, 18, 19) placed side-by-side in circumferential direction (C-C); and in which the assembly of each ridge (20, 21, 22) extends circumferentially along a discontinuous annular path whereby avoiding an even distribution circumferentially.
A braking band (1) of a disc brake disc (2) of ventilated type unusually capable of avoiding vibrations which induce annoying whistling during the braking action, said braking band (1) comprising two mutually facing plates (3, 4); said plates (3, 4) comprising inner surfaces (5, 6), either directly or indirectly facing and delimiting a gap (7); said plates (3, 4) comprising outer surfaces (8, 9); said outer surfaces (8, 9) comprise flat and opposite circumferential portions which form braking surfaces (10, 11); said plates (3, 4) comprising a plate body (12, 13) having an extension in axial direction or plate thickness (14, 15); said plates (3, 4) being joined to each other by heat dissipating elements or connecting elements (16, 17, 18, 19); said connecting elements (16, 17, 18, 19) being shaped as columns and/or ribs which project from a plate towards the opposite plate in the form of bridges which connect the plates (3, 4); wherein at least one of the plates (3; 4) comprises at least one shaped pin (20, 21, 22) which projects from said plate (3; 4) into said gap (7) reaching the opposite plate (4; 3), thus forming at least one localized narrowing of said gap (7) and a thickening of the plate body (12; 13), thus creating a localized increase of said plate thickness (14; 15);and wherein said at least one shaped pin (20, 21, 22) extends at least from a first connecting element (16, 17, 18, 19) to an adjacent connecting element (16, 17, 18, 19) connecting said connecting elements (16, 17, 18, 19); and wherein said at least one shaped pin (20, 21, 22) extends at least along said circumferential direction connecting at least two adjacent connecting elements (16, 17, 18, 19) placed side-by-side in circumferential direction; and wherein the assembly of each shaped pin (20, 21, 22) extends circumferentially along a discontinuous annular path thus avoiding an even distribution circumferentially.
A hydraulic and electromechanical service and parking disc brake (1) comprises a service braking system (20), having at least one hydraulic actuator (65), a parking braking system (21) having at least one electromechanical actuator (64) transmission irreversibility, a control system (22) connected to the service braking system (20) and to the parking system (21) and a user interface (23), wherein a translational member (17) of the electromechanical actuator (64) is restrained to be rotationally integral with respect to the caliper (2) by means of an anti-rotation shape coupling with a guide portion (35) which is integral with the caliper (2) and arranged on a rear side of the translational member (17), opposite to the free end.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
12.
CAST IRON, IN PARTICULAR FOR COMPONENTS OF DISC BRAKES
The invention consists of a gray cast iron comprising carbon, silicon, vanadium, manganese, nickel, chromium, molybdenum, copper, sulfur, phosphorous, tin and titanium, wherein: the percentage by weight of carbon is from 3.70 to 3.90%; the percentage by weight of silicon is from 1.30 to 2.10%; the percentage by weight of vanadium is from 0.10 to 0.15%; the percentage by weight of manganese is from 0.60 to 0.90%; the percentage by weight of nickel is from 0.05 to 0.50%; the percentage by weight of chromium is from 0.20 to 0.35%; the percentage by weight of molybdenum is no more than 0.10%; the percentage by weight of copper is no more than 0.35%; the percentage by weight of sulfur is less than 0.10%; the percentage by weight of phosphorous is less than 0.10%; the percentage by weight of tin is less than 0.10%; the percentage by weight of titanium is no more than 0.01%; the remainder by weight being iron.
C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
C22C 38/22 - Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
C22C 38/28 - Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
C22C 38/34 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
C22C 38/36 - Ferrous alloys, e.g. steel alloys containing chromium with more than 1.7% by weight of carbon
C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
C22C 38/56 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon
C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
F16D 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
13.
METHOD AND SYSTEM FOR DETECTING AND MEASURING A BRAKING FORCE OF A BRAKING SYSTEM FOR VEHICLE, BY MEANS OF PHOTONIC SENSORS INCORPORATED IN A BRAKE PAD
A method is described for detecting and measuring a clamping force CF and/or a braking torque BT deriving from the actuation of a friction braking system for vehicle by means of detection performed in a brake pad 10 of the braking system. The method firstly comprises the step of encapsulating at least one fiber-optic strain sensor 2 in a casing 9 and incorporating the aforesaid casing 9 in a respective portion of friction material M adhering to a base plate or platform 11 of the brake pad 10, and sensitive to friction so that the shearing strain St-eff to which the casing 9 is subject in a tangential reference direction x is representative of the tangential force Ft acting on the brake pad 10, and the normal force Fn-eff to which the casing 9 is subject in a normal reference direction y is representative of the normal force Fn acting on the brake pad 10. The method then provides detecting, by the aforesaid fiber-optic strain sensor 2, a first strain S1 (present in a first position of the casing along a predefined first spatial direction w1 ), depending both on the normal force Fn-eff and on the tangential strain St-eff acting on the casing 9 in the first position; and furthermore of detecting, by the fiber-optic strain sensor 2, a second strain S2 (present in a second position of the friction material along a predefined second direction w2) depending both on the normal force Fn-eff and on the tangential strain St-eff acting on the casing 9 in the second position. The method then comprises the steps of generating, by the fiber-optic strain sensor 2, a first photonic signal L1, representative of the first detected strain S1, and a second photonic signal L2, representative of the second detected strain S2; and of receiving the aforesaid first photonic signal L1 and second photonic signal L2, by an optical reading/ interrogation unit 4, optically connected to the aforesaid fiber-optic strain sensor 2. The method finally provides determining, by the optical reading/ interrogation unit 4, the value of the first strain S1 and the value of the second strain S2, on the basis of the aforesaid first received photonic signal L1 and second received photonic signal L2, respectively; and determining a measurement of the clamping force CF and/or of the braking torque BT based on the determined values of the first strain S1 and the second strain S2.
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
14.
METHOD AND SYSTEM FOR DETECTING AND MEASURING A BRAKING FORCE OF A BRAKING SYSTEM FOR VEHICLE, BY MEANS OF PHOTONIC SENSORS INCORPORATED IN A BRAKE CALIPER
A method is described for detecting and measuring a braking force and/or a braking torque BF/BT deriving from the actuation of a vehicle braking system 1000, by means of detection performed in at least one brake caliper 10 of the braking system. The method comprises the steps of incorporating at least one deformation and/or strain sensor 2, at a respective position, in a portion of material M of the body of the brake caliper 10, susceptible to deformation due to a reaction force which is applied onto the brake caliper at the braking force and/or torque BF/BT, so that the deformation and/or strain S acting locally in the position, in which the deformation and/or strain sensor 2 is located, is representative of the braking force and/or braking torque BF/BT. The deformation and/or strain sensor 2 is a fiber-optic strain sensor 2 of the fiber Bragg grating type. The method then comprises the step of detecting, by means of the fiber-optic strain sensor 2, the local deformation and/or strain S acting in the respective position, and generating a respective at least one first photonic signal L representative of the detected deformation and/or strain S; receiving the first photonic signal L, by an optical reading/ interrogation unit 4, optically connected to the fiber-optic strain sensor 2, and generating, by the optical reading/ interrogation unit 4, one first electrical signal E representative of the local detected deformation and/or strain S, on the basis of the first photonic signal (L) received. The method finally comprises the step of processing the aforesaid first electrical signal E representative of the deformation and/or strain S to obtain a measurement of the braking force and/or braking torque BF/BT. A sensorized brake caliper, equipped to allow the execution of the aforesaid method, and a corresponding system to detect and measure a braking force and/or braking torque are further described.
G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
G01L 1/26 - Auxiliary measures taken, or devices used, in connection with the measurement of force, e.g. for preventing influence of transverse components of force, for preventing overload
G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
G01L 5/28 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
F16D 66/00 - Arrangements for monitoring working conditions of brakes, e.g. wear or temperature
15.
METHOD AND SYSTEM FOR DETERMINING A BRAKING TORQUE, BY MEANS OF DETECTION PERFORMED BY PHOTONIC SENSORS AT A FIXING INTERFACE BETWEEN A BRAKE CALIPER BODY AND A RESPECTIVE SUPPORT
SCUOLA SUPERIORE DI STUDI UNIVERSITARI E DI PERFEZIONAMENTO SANT'ANNA (Italy)
Inventor
Camozzi, Francesco
Meldini, Fabio
Nannipieri, Tiziano
Signorini, Alessandro
Solazzi, Massimiliano
Gabardi, Massimiliano
Abstract
A method is described for determining a braking torque BT resulting from the actuation of a vehicle braking system, by detection performed at least one fixing interface (i, ii, iii, iv) between a brake caliper body 60 and a respective support 61. The method firstly comprises the step of inserting at least one first washer device D at the aforesaid at least one fixing interface, so that the washer device D is fixed and pressed between the brake caliper body 60 and the brake caliper support 61. The washer device D is susceptible to deformation when subjected to forces, so that the deformation and/or force S locally present at each point of the washer device D is representative of the forces acting at the at least one fixing interface, dependent on the braking torque BT. The washer device D incorporates at least one deformation and/or strain sensor FBG, at a respective detecting position, arranged to detect a deformation and/or strain representative of the three spatial vector components of the force acting on the washer device D at the detecting position. The at least one deformation and/or strain sensor is a fiber-optic strain sensor 2 of the fiber Bragg grating type. The method then comprises the step of detecting, by means of the at least one fiber-optic strain sensor FBG, the local deformation and/or strain S acting in the respective detecting position, and generating a respective at least one photonic signal L representative of the detected deformation and/or strain S; then receiving the at least one first photonic signal L, by an optical reading/interrogation unit 4, optically connected to the at least one fiber-optic strain sensor 2, and generating, at least one electric signal E representative of the detected local deformation and/or strain S, based on the received first photonic signal (L). Finally, the method comprises the step of determining the braking torque BT based on the aforesaid at least one electrical signal E. Furthermore, a corresponding system for determining a braking torque BT, a washer device D adapted to operate in the execution of the aforesaid method, and a sensorized brake caliper, equipped to allow the execution of the aforesaid method, are also described.
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
G01L 5/16 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
F16D 65/09 - Pivots or supporting members therefor
A method for manufacturing a brake disc (1), comprising the steps of: - providing at least one sheet of predefined thickness; - blanking a first disc-shaped portion (2) in at least one sheet adapted to make a first plate (3) of a ventilated braking band (4); - blanking a second disc-shaped portion (5) in at least one sheet adapted to make a second plate (6) of said ventilated braking band (4); - blanking a third portion (7) in at least one sheet adapted to make at least one ventilation spacer (8) for said ventilated braking band (4); - drawing said third portion (7) by shaping, along a circular path along said third portion (7), first and second protrusions (9, 10), forming opposite first and second recesses (11, 12) adapted to make ventilation channels (13) for said ventilated braking band (4); - connecting said first disc-shaped portion (2) adapted to make a first plate (3) to said first protrusions (9) by means of discontinuous weld spots (14); - connecting said second disc-shaped portion (5) adapted to make a second plate (6) to said second protrusions (10) by means of discontinuous weld spots (14). A system for manufacturing a disc brake disc capable of carrying out the manufacturing steps indicated above. A disc for disc brake manufactured according to the manufacturing steps indicated above.
DEVICE AND METHOD FOR A SIMULTANEOUS DETECTION OF TANGENTIAL AND NORMAL FORCES ACTING IN A DETECTION POINT AT A BRAKE CALIPER OR AT A SUSPENSION OF A VEHICLE WHEEL
A device is described for the simultaneous detection of the tangential and normal components of a force acting at a brake caliper or suspension of a vehicle wheel. The detection device 1 comprises a plate-shaped casing 2 which contains a force sensor assembly 3 configured to detect both a normal force component fn, and at least one tangential force component ft, and is configured to generate, by piezo-resistive effect, one or more electrical signals SA, SB representative of the normal force component fn and of the at least one tangential force component ft detected. The device 1 further comprises an electrical interface 4 integrated in the casing 2 and connected to biaxial force sensor 3 to conduct and make the aforesaid one or more generated electrical signals SA, SB available. A device and a system are further described for determining a braking force and/or torque due to the action of a vehicle brake caliper, comprising, inter alia, the aforesaid detection device, and a brake caliper system with a braking force estimation function, employing the aforesaid devices. Corresponding methods are further described for simultaneously detecting the tangential and normal components of a force acting at a brake caliper of a vehicle wheel or of a force exchanged between an axle and a suspension of the wheel, and to determine a braking force and/or torque due to the action of a vehicle brake caliper.
G01L 1/22 - Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluidsMeasuring force or stress, in general by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
G01L 5/162 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force using variations in ohmic resistance of piezoresistors
A caliper body (1) for a brake caliper for a disc brake, adapted to be arranged straddling the disc, wherein said caliper body (1) comprises a first elongated portion, adapted to face a first braking surface of the disc either directly or indirectly by interposing at least one brake pad; a second elongated portion, opposite to said first elongated portion and adapted to face a second braking surface of the disc opposite to said first braking surface either directly or indirectly by interposing at least one second brake pad; at least one caliper bridge to connect said first elongated portion said second elongated portion to each other arranged straddling the disc; - and wherein at least either said elongated portion or said second elongated portion comprises at least one thrust device housing or cylinder, adapted to receive at least one portion of a thrust device (13), adapted to apply a thrust action directed in inner axial direction on at least one facing brake pad to abut said at least one facing brake pad against a braking surface of the disc; said at least one thrust device housing extends about a thrust axis; and wherein a first annular housing (15) is provided which radially opens into said thrust device housing, said first annular housing (15) being adapted to receive an elastic retraction element (30), adapted to apply a retracting action in outer axial direction on said thrust device (13).
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The present invention relates to a brake caliper of a disc brake (1) comprising: - a caliper body (2) adapted to straddle a brake disc (3) to apply a braking action on a vehicle; - said brake disc (3) defining an axial direction (A-A) directed either along or parallel to the rotation axis (X-X) of said brake disc (3); a radial direction (R- R) orthogonal to said axial direction (A-A) and a circumferential direction (C-C) orthogonal to said axial (A-A) and radial (R-R) directions, as well as a tangential direction (T-T) locally orthogonal to said axial direction (A-A) and said radial direction (R-R) and tangent to said circumferential direction (C-C); - said caliper body (2) comprising at least one thrust device housing (4) which accommodates a thrust device (5) adapted to apply a bias on at least one brake pad (6) to abut said at least one brake pad (6) against the braking surfaces (7, 8) of said brake disc (3); wherein - said thrust device (5) is operatively connected to a translating screw nut (9); operatively connected to a worm (10); said translating screw nut (9) is operatively connected to a worm (10); said worm (10) is operatively connected to a gearbox (11); and wherein - said worm (10) is rotatably supported by a screw thrust bearing (12) adapted to support in rotatable manner said worm (10) and to apply for said worm (10) an axial reaction, i.e. a direct reaction prevalently along said axial direction (A- A); - at least part of said pressure gearbox (11) placed near and operatively connected to said worm (10) is rotatably supported by at least one gearbox thrust bearing (12) adapted to support in rotatable manner said at least one part of said reduction gear (11) and apply for said at least one part of said reduction gear (11) a radial reaction, that is a direct reaction prevalently along said radial direction (R-R); and wherein said screw thrust bearing and said gearbox thrust bearing are the same thrust bearing (12).
F16D 55/225 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
F16D 65/095 - Pivots or supporting members therefor
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
A brake caliper for a disc brake comprising: • - a caliper body (2) adapted to straddle a brake disc to apply a braking action on a vehicle; • - said caliper body comprising at least one thrust device housing (4) which accommodates a thrust device (5) adapted to apply a bias on at least one brake pad to abut said at least one brake pad against the braking surfaces of said brake disc; wherein • - said thrust device (5) is operatively connected to a translating screw nut (9); operatively connected to a worm (10); said translating screw nut (9) is operatively connected to a worm (10); said worm (10) is operatively connected to a gearbox (11); and wherein • - said worm (10) is rotatably supported by a screw thrust bearing (12) adapted to support in rotatable manner said worm (10) and to apply for said worm (10) an axial reaction, i.e. a direct reaction prevalently along said axial direction (A-A); • - at least part of said pressure gearbox (11) placed near and operatively connected to said worm (10) is rotatably supported by at least one gearbox thrust bearing (12) adapted to support in rotatable manner said at least one part of said reduction gear (11) and apply for said at least one part of said reduction gear (11) a radial reaction, that is a direct reaction prevalently along said radial direction (R-R); said thrust bearing (12) comprises at least one radially inner slewing ring (14, 15); and wherein said gearbox (11) comprises an epicyclic gear (20); and wherein said epicyclic gear (20) comprises a fixed gear or an internally toothed body (17) which cooperates with at least one planet gear (18), and wherein said at least one planet gear (18) is rotatably supported about at least one planet gear pin (21); and said at least one planet gear pin (21) is operatively connected to said at least one radially inner slewing ring (15) so as to transmit A brake caliper for a disc brake comprising: • - a caliper body (2) adapted to straddle a brake disc to apply a braking action on a vehicle; • - said caliper body comprising at least one thrust device housing (4) which accommodates a thrust device (5) adapted to apply a bias on at least one brake pad to abut said at least one brake pad against the braking surfaces of said brake disc; wherein • - said thrust device (5) is operatively connected to a translating screw nut (9); operatively connected to a worm (10); said translating screw nut (9) is operatively connected to a worm (10); said worm (10) is operatively connected to a gearbox (11); and wherein • - said worm (10) is rotatably supported by a screw thrust bearing (12) adapted to support in rotatable manner said worm (10) and to apply for said worm (10) an axial reaction, i.e. a direct reaction prevalently along said axial direction (A-A); • - at least part of said pressure gearbox (11) placed near and operatively connected to said worm (10) is rotatably supported by at least one gearbox thrust bearing (12) adapted to support in rotatable manner said at least one part of said reduction gear (11) and apply for said at least one part of said reduction gear (11) a radial reaction, that is a direct reaction prevalently along said radial direction (R-R); said thrust bearing (12) comprises at least one radially inner slewing ring (14, 15); and wherein said gearbox (11) comprises an epicyclic gear (20); and wherein said epicyclic gear (20) comprises a fixed gear or an internally toothed body (17) which cooperates with at least one planet gear (18), and wherein said at least one planet gear (18) is rotatably supported about at least one planet gear pin (21); and said at least one planet gear pin (21) is operatively connected to said at least one radially inner slewing ring (15) so as to transmit the action of said gearbox (11) to said worm (10) by means of said at least one radially inner slewing ring (15).
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
21.
BRAKE CALIPER OF DISC BRAKE, DISC BRAKE SYSTEM AND DETECTING DEVICE
Brake caliper (1) for a disc brake system comprising a caliper body (4) adapted to straddle the disc (3), which comprises a first elongated portion (5) adapted to face a first braking surface (6) of the brake disc (3), and a second elongated portion (7), opposite to said first elongated portion (5) and adapted to face a second braking surface (8) of the brake disc (3) opposite to said first braking surface (6), and at least one bridge (9) to connect said first elongated portion (5) and said second elongated portion (7) to each other arranged straddling the disc (3); wherein said brake caliper (1) further comprises at least one pair of opposite brake pads (10, 20) each brake pad (10, 20) of said at least one pair of opposite brake pads (10, 20); and wherein said brake caliper (1) further comprises: at least one detecting device (15), adapted to detect a biasing force directed in axial direction (X- X); said detecting device (15) of the brake caliper (1) is interposed between said plate back (23) of said second brake pad (20) of said pair of brake pads (10, 20) and an elongated portion (7) of the caliper body (4).
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/224 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
The present invention relates to a caliper body (1) of a brake caliper (2) of disc brake (3) adapted to be arranged straddling a brake disc (4) to apply a braking action on a vehicle, where it comprises: supporting elements or supports (5) for supporting thrust or actuation devices (6) and/or supporting brake pads (7) or supporting at least one attaching element of the caliper body (8) for attaching the caliper body (1) to a support of the caliper, as well as feeding pipes (9) for supplying the thrust devices (6), wherein the supports (5) and feeding pipes (9) are made of a first material capable of withstanding high pressures; - at least one inner body portion (10) made of a second material adapted to incorporate therein at least partially said supports (5) and feeding pipes (9) and obtaining shapes having complex geometry capable of distributing the stress received from the supports (5) and feeding pipes (9); said at least one inner body portion (10) forms a first vehicle side elongated element (11) adapted to face a first braking surface (12) of the brake disc (4); and a second wheel side elongated element (13) adapted to face a second braking surface (14) of the brake disc (4) opposite to said first braking surface (12); said caliper body (1) further comprises at least one outer body portion (15) made of a third material adapted to form a reinforcement with mechanical resistance; wherein said supports (5) and feeding pipes (9) are embedded at least partially in said at least one inner body portion (10); and said inner body portion (10) is surrounded and encircled by said at least one outer body portion (15).
An actuator device (16) of a braking device (8) and a clutch (12) comprising a pump (20) provided with a single operating device (24) for pressurizing a fluid by means of a float (32), and a first delivery circuit (36) and a second delivery circuit (40) fluidly connected to an outlet (44) of said pump (20). The first delivery circuit (36) is fluidly connectable to a braking device (8), the second delivery circuit (40) is fluidly connectable to a clutch (12). The actuator device (16) comprises diverter means (48) suitable for fluidly connecting the output (44) of the pump (20) alternately with the first delivery circuit (36) and with the second delivery circuit (40), so as to alternately actuate the braking device (8) or the clutch (12).
Braking system for vehicles (4) comprising a first brake group (8), a second brake group (12) and a third brake group (16), each brake group (8, 12, 16) comprising a rotor (20), a braking device (24) associated with said rotor (20), and an electro-hydraulic or electromechanical actuator (28) of each braking device (24), a first and a second control unit (32, 36) for said brake groups (8,12,16), wherein the first control unit (32) is operatively connected to the first brake group (8) by means of a piloting device (40) for said electromechanical or electro-hydraulic actuator (28) of the first brake group (8), wherein the second control unit (36) is operatively connected to the second brake group (12) by means of a piloting device (40) for said electromechanical or electro-hydraulic actuator (28) of the second brake group (12), and is connected to the third brake group (16) by means of a piloting device (40) for the electromechanical or electro-hydraulic actuator (28) of the third brake group (16), wherein the first control unit (32) is connected to and powered by a first power source (44), and wherein the second control unit (36) is connected to and powered by a second power source (48), said first and second power sources (44, 48) being independent and galvanically isolated from each other, each control unit (32, 36) being programmed to implement, via the corresponding piloting system (40), a standard braking strategy in case of malfunctions for each brake group (8, 12, 16) and a fault braking strategy, if it detects an electrical fault of one or more of the brake groups (8, 12, 16).
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
A pad-and-spring assembly (1) for a brake caliper (10) for a disc brake comprising: at least one brake pad (2) comprising friction material (3) and a supporting plate (4) which supports said friction material (3); at least one elastic device (5), adapted to apply an elastic biasing action directed in axial direction to said brake pad (2) to move it away from the brake disc when the braking action ceases; wherein said supporting plate (4) comprises a surface facing the disc (6), intimately associated with said friction material (3), and a plate back (7), axially opposite to said disc facing surface (6) and adapted to face thrust means (8) of the brake caliper (10) which can be associated with said assembly (1); said friction material (3) comprises a radially inner edge, adapted to face the rotation axis of the brake disc, and a radially outer edge (13), radially opposite to said radially inner edge; said radially outer edge (13) of the friction material (3) defines the outer radial dimension level of the friction material (3) with its tangential extension on said surface facing the disc (6) of the supporting plate (4); said disc facing surface (6) of the supporting plate (4) comprises at least one free surface (9), which is free from the contact with the friction material (3) and adapted to face a braking surface of the brake disc which can be associated with said assembly (1), wherein said free portion (9) is located radially inside with respect to said at least one tangential extension of the radially outer edge (13) of the friction material (3); said free surface (9) of the disc facing surface (6) of the supporting plate (4) of brake pad (2) comprises at least one through opening edge (16) which at least partially delimits a through opening (17) in axial direction through said supporting plate (4) of brake pad (2); wherein said at least one elastic device (5) has a body comprising: at least one connecting portion (21, 21'), adapted to connect to the body of the brake caliper (10) which can be associated with said assembly (1); at least one supporting portion (22), which rests against said through opening edge (16) of the free surface (9) of the supporting plate (4), axially crossing said through opening (17) of the supporting plate (4) to apply an elastic biasing action directly in axial direction to said through opening edge (16) of said through opening (17).
The present invention relates to a method for making a brake disc, comprising the following operating steps: a) preparing a brake disc, comprising a braking band 2 provided with two opposite braking surfaces 2a, 2b, each of which defines at least partially one of the two main faces of the disc, the braking band being made of grey cast iron or steel; (b) subjecting at least one of said braking surfaces to a working process adapted to increase the surface roughness thereof; c) nitrocarburizing said braking surface with increased surface roughness obtaining on said surface a nitrocarburized surface layer 300; (d) depositing on said nitrocarburized surface layer a material in particle form consisting of: Cr3C2 and NiCr, or NiCr, Fe, Mo, Co, Mn and Al, by means of a spray deposition technique, preferably by means of an HVOF technique, or an HVAF technique or a KM technique forming a base protective coating 30 which covers at least one of the two braking surfaces of the braking band with the interposition of said nitrocarburized layer; and e) depositing on said base protective coating a material in particle form consisting of WC, Fe, Cr and Al, by means of a spray deposition technique, preferably by means of an HVOF technique, or an HVAF technique or a KM technique, thus forming a surface protective coating 3 which consists of WC and Fe, Cr and A1 and which covers at least one of the two braking surfaces of the braking band.
The present invention relates to a caliper body (1) of a brake caliper (2) of disc brake (3) adapted to be arranged straddling a brake disc (4) to apply a braking action to a vehicle, wherein it comprises: - a first elongated vehicle-side element (5) adapted to face a first braking surface (6) of the brake disc (4); - a second elongated wheel-side element (7) adapted to face a second braking surface (8) of the brake disc (4) opposite to said first braking surface (6); - each of said elongated vehicle-side and wheel-side elements (5, 7) comprises at least one thrust seat (9, 10, 11, 12) to receive at least one thrust device (13) adapted to bias at least one brake pad (14, 15, 16, 17) against said braking surfaces (6, 8) to apply a braking action to the vehicle; - at least one caliper bridge (18, 19, 20) which connects said first elongated vehicle-side element (5) to said second elongated wheel-side element (7); said at least one caliper bridge (18, 19, 20) being arranged straddling said brake disc (4); - and wherein said first elongated vehicle-side element (5), said second elongated wheel-side element (7) and said at least one caliper bridge (18, 19, 20) are in one piece; - and wherein said caliper body comprises caliper fixing elements (21, 22, 23) to connect said caliper body (1) to a vehicle mount, such as for example a steering knuckle; - and wherein said caliper fixing elements (21, 22, 23) are at least three in number; - said caliper fixing elements (21, 22, 23) are distributed along said elongated vehicle-side element (5); wherein - said elongated vehicle-side and caliper-side elements (5, 7) each comprise at least two pad seats (24, 25, 26, 27), each adapted to receive at least one brake pad (14, 15, 16, 17); wherein - said elongated vehicle-side and wheel-side elements (5, 7) each comprise at least two opposite abutment elements (29, 30, 31, 32) each adapted to abuttingly receive a brake pad (14, 15, 16, 17) for relieving the braking action on said caliper body (1); and wherein - each of said at least two opposite abutment elements (29, 30, 31, 32) is placed between two of said brake pads (14, 15, 16, 17).
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
28.
PAD AND SPRING ASSEMBLY FOR DISC BRAKE AND BRAKE CALIPER
A pad and spring assembly for a brake caliper for a disc brake, wherein an axial direction is defined either coincident with or parallel to the rotation axis of a disc (3) of said disc brake (10) which is associable with the brake caliper (2), comprising at least one brake pad, adapted to press against a facing braking surface of the disc of disc brake when pushed by thrust means of the brake caliper, at least one elastic device (5), adapted to bias said at least one brake pad with respect to the caliper body of the brake caliper in axial direction, wherein said elastic device (5) comprises at least a first portion (11) firmly fixed to the brake pad, at least a second portion (12) adapted to be associated either directly or indirectly by interposition of a metal sheet (8) with the caliper body, wherein said first portion (11) is made as a separate piece with respect to said second portion (12), said first portion (11) and said second portion (12) are mutually engaged, at least either said first portion (11) or said second portion (12) comprises an elastically deformable portion to apply an elastic biasing action adapted to make the brake pad abut against said thrust means of the brake caliper being associable with said assembly, said elastically deformable portion is an arc- shaped portion adapted to unwind to apply said elastic biasing action adapted to make the brake pad abut against said thrust means of the brake caliper being associable with said assembly; and wherein said arc-shaped portion comprises an abutment surface, adapted to form an abutment reference to elastically bias said brake pad away from the disc.
A pad return spring (50) for a disc brake caliper body adapted to straddle a brake disc, said brake disc comprising a first braking surface of brake disc and an opposite second braking surface of brake disc, said caliper body comprising: a first elongated wheel-side element comprising an outer caliper side of first elongated element and an inner caliper side of first elongated element, wherein said outer caliper side of first elongated element is adapted to face a vehicle wheel and wherein at least one portion of the inner caliper side of first elongated element is adapted to face said first braking surface of brake disc by means of a first pad); a second elongated opposite wheel-side element comprising an outer caliper side of second elongated element and an inner caliper side of second elongated element, wherein at least one portion of the inner caliper side of second elongated element is adapted to face said second braking surface of brake disc by means of a second opposite pad; - said first elongated wheel-side element comprises at least one thrust means seat adapted to receive thrust means which are suitable for influencing the first pad against said first braking surface of brake disc; at least said second elongated opposite wheel-side element comprises at least two portions each defining a connecting seat adapted to connect the caliper body to a support element for supporting the caliper on the vehicle; said caliper body comprises at least one elongated element connecting bridge adapted to connect said first elongated wheel-side element to said second elongated opposite wheel-side element so as to be suitable for straddling said brake disc; said at least one elongated element connecting bridge comprises a middle connecting bridge which extends according to the axial direction and defines an outer middle bridge side externally facing the caliper body, an inner middle bridge side internally facing the caliper body, opposite to the outer middle bridge side, a middle bridge disc inlet side, a middle bridge disc outlet side, opposite to the middle bridge disc inlet side; said pad return spring (50) comprising a first pad retraction element (61) and a second pad retraction element (62), each of said first pad retraction element (61) and second pad retraction element (62) defining a middle stretch (58 59), a first side stretch (54, 55) adapted to influence said first pad, and an opposite second side stretch (56, 57) adapted to influence said second pad to move said first pad and said second opposite pad away from said first braking surface of brake disc and from said opposite second braking surface of brake disc at the end of a braking action; wherein said first pad retraction element (61) and said second pad retraction element (62) are shaped as a folded band and consist of a plurality of overlapping sandwiched sheet layers (61' 62'); said spring comprising an elongated connecting element (63) which connects the first pad retraction element (61) and the second pad retraction element (62) to each other at said middle stretch (58, 59); said spring comprising anchoring means (51, 52, 53) adapted to removably restrain said pad return spring (50) to said middle connecting bridge (18).
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
30.
ASSEMBLY OF AT LEAST TWO BRAKE PADS AND AT LEAST ONE SPRING
An assembly (100) comprising: • - at least two pads (6) having a support plate (7) and a friction material coating (8), each of said at least two pads (6) being adapted to be accommodated in a pocket of a caliper so that each of said at least two pads (6) can be positioned on a side of a brake disc (3) of a disc brake facing opposite braking surfaces; said brake disc (3) being a rotor adapted to rotate about a rotation axis • - at least one spring (15), shaped to be arranged straddling the disc brake (3), wherein said spring (15) applies an elastic bias on the pads (6) so as to bias the pads (6) elastically away from the brake disc (3); wherein said at least one spring (15) is configured to be directly connected only to the pads (6); said support plate (7) comprises at least one plate coupling portion (37), wherein, in a section of said plate coupling portion (37) on a plane containing the axial direction and the radial direction, said plate coupling portion (37) comprises: • - an inner lower edge (25), adapted to face the brake disc (3) in the radially inward direction or towards the disc rotation axis; • - an inner upper edge (26), adapted to face the brake disc (3) in the radially outward direction or opposite to the disc rotation axis; • - said inner upper edge (26) continues on a direct upper surface (27) according to an axial direction parallel to said disc rotation axis, thus forming an upper spring-coupling plate portion edge; and wherein said spring (15) is always in contact exclusively with: • - said inner lower edge (25) and • - said upper spring-coupling plate portion edge.
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
31.
BRAKING BAND OF A DISC FOR DISC BRAKE OF VENTILATED TYPE
A braking band of a disc for disc brake of ventilated type, said braking band comprising two plates facing each other; said plates comprising inner surfaces directly or indirectly facing each other and delimiting a gap, said plates comprising a plate body having an extension in axial direction or plate thickness, said plates being joined to each other by heat dissipation elements or connecting elements (16, 17, 18, 19), said connecting elements being shaped as columns and/or ribs or fins projecting from one plate towards the opposite plate in the shape of connecting bridges of the plates, wherein at least one of the plates comprises at least one ridge (20, 21, 22) projecting from said plate into said gap without reaching the opposite plate, thus forming at least one localized narrowing of said gap and a thickening of the plate body, thus creating a localized increase of said plate thickness, and wherein said at least one ridge (20, 21, 22) extends at least from a first connecting element (16, 17, 18, 19) to an adjacent connecting element by connecting said connecting elements, and wherein said at least one ridge (20, 21, 22) extends at least along said circumferential direction connecting at least two adjacent connecting elements (16, 17, 18, 19) arranged side-by-side in circumferential direction, and wherein said connecting elements and said at least one ridge may be grouped in modules (31, 32, 33, 34) distributed circumferentially along said gap, at least a first module (31) comprises at least three adjacent connecting elements (16) connected to one another by two ridges (20, 21), wherein said two ridges (20, 21) are aligned circumferentially and wherein said two ridges (20, 21) project from a first plate into said gap without reaching the opposite plate, and wherein - at least a second module (32) comprises at least three adjacent connecting elements (16) connected to one another by two ridges (20, 21), wherein said two ridges (20, 21) are aligned circumferentially and wherein said two ridges (20, 21) project from a second plate into said gap without reaching the opposite plate, and wherein at least a third module (33) comprises at least one connecting element (17) without connection at each ridge.
Disc brake disc assembly adapted to cooperate with a brake caliper for exerting a braking action on a vehicle, said assembly comprising: a braking band (2); - a bell (13) for connecting the disc assembly (1) to a support of a vehicle; - at least one driving element (20); wherein - said bell (13) comprising at least one driving bell surface, and wherein - said bell (13) rests on at least one surface of the braking band (2), or on a plurality of surfaces of the braking band (2) substantially coplanar with one another, thus avoiding a bilateral constraint at least between said bell and said braking band (2); - said braking band (2) comprising at least one driving band surface); - said at least one driving element (20) slidingly rests on said at least one driving band surface; - said at least one driving element (20) is selectively movable along said at least one driving band surface), at least passing: - from a position in which it avoids resting on the bell (13) - to a position in which it rests on the bell and constrains said bell (13) to said band; - thus avoiding said braking band (2) from being constrained to said bell (13) in radial direction; - said band comprises a band edge which forms an outer radial abutment band seat (37) which prevents a movement in radial direction of said driving element (20); and wherein - said at least one driving element comprises at least one radial driving element extension; and wherein - said radial driving element extension comprises a coupling tooth (38) which is at least partially and removably inserted into said outer radial abutment band seat (37).
LEVER-OPERATED IMPROVED ACTUATION DEVICE FOR BRAKE OR CLUTCH, IN PARTICULAR FOR MOTORCYCLES, AND METHOD OF DISASSEMBLY/ ASSEMBLY OF A LEVER-OPERATED ACTUATION DEVICE
A lever-operated actuation device (4) for a brake or clutch comprising: a pump body (8) housing a hydraulic pump provided with a float (12) and a hub (16) rotatably associated with the pump body (8) around a lever pin (20) defining a rotation axis (X-X), the hub (16) being associated with a tip (24) operatively connected to the float (12) for its actuation, the pump body (8) having a pair of fixing ears (32) provided with fixing holes (36) for the lever pin (20), the lever pin (20) rotatably supporting an associable lever assembly (40), comprising a manual actuation lever (44) and a lever guide (48) suitable to actuate the tip (24) via the hub (16), in which the actuation device (4) comprises retention means (52) that keep the hub (16) joined to the pump body (8), following the removal of the lever pin (20) and the lever assembly (40) for its disassembly/replacement.
A friction material with reduced storage time is described, comprising a binder composition based on a hydraulic binder and its use in brake pads and industrial applications.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
A method (500) for controlling a braking system of a vehicle, comprising steps of: receiving (501 ), by a vehicle control module, a braking request; receiving (502), by the vehicle control module, first input information representative of the vehicle; determining (503), by the vehicle control module, first intermediate information on the basis of said first input information; determining (504), by the vehicle control module, a reference force value on the basis of the first input information and of the braking request; detecting (505), by a first plurality of the detecting devices operatively associated with a corner of a vehicle, second input information representative of the braking system at the corner of the vehicle; determining (506), by a force estimation and validation module, an estimated force value on the basis of said first intermediate information and said second input information; determining (507), by the force estimation and validation module, a control quantity; determining (508), by a braking control module, a control signal of an electro-mechanical actuator of a brake caliper of the braking system on the basis of the control quantity and of the reference force value; providing (509), by the control module braking, said control signal to said electro-mechanical actuator.
B60T 8/174 - Using electrical or electronic regulation means to control braking characterised by using special control logic, e.g. fuzzy logic
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 8/17 - Using electrical or electronic regulation means to control braking
36.
AUTOMATIC CONTROLLED BRAKE-BY-WIRE BRAKING SYSTEM FOR MOTORCYCLES
A braking system (4) for motorcycles comprising a first manual actuator device (8), operable by means of a lever and / or a pedal, selectively connectable to at least a first braking device (12) placed on a front axle (16) of the vehicle, and/or at least a second braking device (20) placed on said front axle (16) or on a rear axle (22) of the motorcycle, each braking device (4) acting on a relative brake disc or drum (14), the first manual actuator device (8) being provided with a hydraulic supply circuit (24) that can be selectively connected to a hydraulic input circuit (28) of at least one of said braking devices (12,20) by means of a control valve (32), said control valve (32) being positioned in an operating position, in which it hydraulically disconnects the first manual actuator device (8) from the braking devices (12,20), and in an electrical fault position, in which it hydraulically connects the first manual actuator device (8) with at least one of said braking devices (12,20), at least one electro-hydraulic automatic actuator device (36) fluidly connectable to the hydraulic input circuit (28) of at least one of said braking devices (12, 20) for the respective hydraulic actuation thereof, at least one electromechanical automatic actuator device (40) associated with at least one of said braking devices (12, 20) not provided with a hydraulic input circuit (28), the electro-hydraulic automatic actuator devices (36) being associated with the front axle (16) and the electromechanical automatic actuator devices (40) being associated with the rear axle (22) of the motorcycle or vice versa, - a single control unit (44) operatively connected to the control valve (32), to the at least one electro-hydraulic automatic actuator device (36), to the at least one electromechanical automatic actuator device (40) and to the first manual actuator device (8) so as to operate said electro-hydraulic (36) and electromechanical (40) automatic actuator devices and said control valve (32) according to the position or configuration of the first manual actuator device (8) and/or according to the dynamics of the motorcycle.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/1755 - Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
B60T 8/1761 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
37.
METHOD FOR DETECTING MALFUNCTIONS OF AN ELECTRO-ACTUATED BRAKE APPARATUS OF A MOTOR VEHICLE
The invention relates to a method for detecting malfunctions of an electro-actuated brake apparatus (100; 200) of a motor vehicle. The apparatus includes: an electronic control unit (50; 50'); an electro-actuated brake caliper (10; 20) electrically actuated by the electronic control unit for generating a clamping force (Fc) on a disc (15) of the brake apparatus in response to a control signal (Sp) generated by the electronic control unit. The method comprising the steps of: providing, in the electronic control unit, a functional control block (51) and a first functional block (60; 60') consisting of a numerical model representative of the electro- actuated brake caliper; providing a target signal (BT) to the functional control block for generating said control signal to operate the electro-actuated brake caliper; providing said target signal to the first functional block for generating a first signal (S1; S1') representative of a theoretical quantity associated with the numerical model representative of the electro-actuated brake caliper; comparing said first signal with a feedback signal (Sf'; Spi') representative of a real operating quantity associated with the electro-actuated brake caliper for generating an error signal to be sent to a second functional block (70) of the electronic control unit; performing, by said second functional block, an error validation check to provide information (R) on the operating state of the electro-actuated brake caliper to the electronic control unit.
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
38.
METHOD AND DEVICE FOR DETECTING AND PROVIDING BRAKING ASSESSMENT INFORMATION, INDICATIVE OF A PARTICULATE EMISSION DUE TO THE USE OF A VEHICLE BRAKING SYSTEM
A method for detecting and providing braking assessment information (I) is described, indicative of a particulate emission due to the use of a vehicle braking system. The method comprises the step of determining, upon a braking event, one or more physical quantities (A, B, C) related to the particulate emission caused by the braking event, based on the detection of at least one physical quantity (A) detected from the aforesaid one or more physical quantities, performed by respective detection means (10) provided in the vehicle. The method comprises then the step of calculating, by means of an algorithm or mathematical assessment model (M1), stored and executable in a computer (10), at least one braking assessment index (ivf), based on the aforesaid one or more determined physical quantities (A, B, C). Such index ivf is representative of a particulate emission amount (QP) by the vehicle braking system upon the braking event. The method lastly includes providing a user with braking assessment information (I) related to the aforesaid calculated braking assessment index (ivf), by means of a user interface (14). A device (1) for detecting and providing braking assessment information indicative of a particulate emission by a braking system is also described, capable of performing the aforesaid method.
The object of the present invention is a dissymmetric braking system (1) for vehicle (2), in which said vehicle comprises at least one first vehicle axle (3 or 15) supported by at least one right axle wheel (4 or 36) and at least one left axle wheel (5 or 37) of the vehicle; in which said braking system (1) comprises: - at least one right wheel braking device (6 or 34); - at least one left wheel braking device (7 or 35); - at least one device to apply a braking action by the driver (8); - at least one actuating device (9) to transform the braking action into a braking pressure command or first pressure or input pressure (PI); - at least one right wheel connection (10 or 38) between said at least one actuating device (9) and said first axle right wheel braking device (6 or 34); at least one left wheel connection (11 or 39) between said at least one actuating device (9) and said first axle left wheel braking device (7 or 35); at least one pressure reducing device (12) is provided in one of said connections (10, 11 or 38, 39); said pressure reducing device (12) comprises at least one transfer device (13) which receives said first pressure (PI); and in which said at least one transfer device (13) transforms said first pressure (PI) into a reduced braking pressure or second pressure or output pressure (P2), whereby avoiding, during the braking action, a fluidic connection between a fluid which has said first pressure (PI) and a fluid which has said second pressure (P2); so as to determine, during the braking action, a relationship between said first pressure (PI) and said second pressure (P2) with linear, or proportional, trend without variation of linearity or proportionality throughout the operating field of the pressure reducing device (12); and so that the braking action of one of said at least one right wheel braking device (6 or 34) and at least one left wheel braking device (7 or 35) is lower than the other.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/18 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
It is an object of the present invention a caliper body (1) of a disc brake caliper (2) of the floating type, wherein said caliper body (1) is adapted to be arranged straddling a brake disc (3) having first and second opposite braking surfaces (4, 5) adapted to rotate about a rotation axis (X-X) which defines an axial direction (A-A), radial directions (R-R) orthogonal to said axial direction (A-A) and passing through said rotation axis (X-X), as well as a circumferential direction (C-C) orthogonal to each of said radial directions (R- R) and to said axial direction (A-A), as well as specifically a tangential direction (T-T) orthogonal to the axial (A-A) and radial (R-R) directions passing through said point, wherein - said caliper body (1) comprises a bracket (6) adapted to connect to a caliper support provided in a vehicle; - said caliper body (1) comprises a floating element (7) slidingly supported by said bracket (6) so as to move relative to the bracket (6) along said axial direction (A-A); - said floating element (7) comprises a first floating element portion (8) adapted to face said first braking surface (4) either directly or indirectly; - said first floating element portion (8) comprises at least one biasing device housing (9) adapted to accommodate a biasing device (10) capable of applying a biasing force to a first brake pad (11) facing said first braking surface (4) to apply a braking action on said brake disc (3); - said floating element (7) comprises at least a first floating element bridge (12; 13) supported by said first floating element portion (8) and which protrudes straddling said brake disc (3); - said floating element (7) comprises a plate-shaped portion (14) overhangingly supported by said at least a first floating element bridge (12;13) which extends with a first outer plate-shaped portion side (23) thereof, arranged opposite to said biasing device (10), substantially on a plane extending along circumferential (C-C) and radial (R-R) directions; wherein - said plate portion (14) comprises plate-shaped portion end portions (15, 16) which overhangingly protrude from opposite sides and in circumferential direction (C-C) with respect to said at least a first floating element bridge (12; 13); - said plate-shaped portion (14) comprises a second inner plate-shape portion side (17) facing said biasing device (10) and opposite said first outer plate-shaped portion side (23); - said plate-shaped portion (14) comprises at least two plate-shaped portion projections (18, 19) which overhangingly protrude from said plate-shaped portion side (17); - said at least two plate-shaped portion projections (18, 19) comprise thrust surfaces (20, 21) adapted to bias a second pad (22) against said second braking surface (5); - said at least two plate-shaped portion projections (18, 19), mutually and with said plate-shaped portion (14), form a plate-shaped portion ventilation channel (24) mainly extending in radial direction (R-R).
F16D 55/22 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
A spring (22) for friction pads (11) which can be associated with a caliper (2) of a disc brake (1) for pushing the friction pads (11) away from a brake disc (3), wherein the spring (22) comprises a fixing stretch (24), a resting stretch (25), opposite to the fixing stretch (24), and a return stretch (26) formed between the fixing stretch (24) and the resting stretch (25), wherein the return stretch (26) extends from a narrowing region (29), in form of widened loop with respect to the narrowing region (29), to an upper apical region (28) of the spring (22), wherein the fixing stretch (24) forms a fixing seat (30) at the caliper (2) and the resting stretch (25) forms a plate-shaped contact portion (32), a plate-shaped intermediate portion (34), extending between the narrowing region (29) and the contact portion (32), and a bending edge (35) formed between the contact portion (32) and the intermediate portion (34).
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
A spring (22) for friction pads which can be associated with a caliper of a disc brake for pushing the friction pads away from a brake disc, wherein the spring (22) comprises a descending fixing stretch (24), an ascending resting stretch (25), opposite to the fixing stretch (24), and an arch-shaped return stretch (26) formed between the fixing stretch (24) and the resting stretch (25), wherein the return stretch (26) extends from a narrowing region (29), in which the fixing stretch (24) and the resting stretch (25) locally approach each other in form of widened loop with respect to the narrowing region (29), to a lower apical region (28) of the spring (22), wherein the fixing stretch (24) forms a fixing seat for fixing a fixing portion of the friction pad and the resting stretch (25) forms a contact portion (32) for a free resting with possibility of slipping of the spring (22) against a contact surface of the caliper.
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
A spring (22) for friction pads which can be associated with a caliper of a disc brake for pushing the friction pads away from a brake disc, wherein the spring (22) comprises a descending fixing stretch (24), an ascending resting stretch (25), opposite to the fixing stretch (24), and - an arch-shaped return stretch (26) formed between the fixing stretch (24) and the resting stretch (25), wherein the return stretch (26) extends from a narrowing region (29), in which the fixing stretch (24) and the resting stretch (25) locally approach each other in form of widened loop with respect to the narrowing region (29), to a lower apical region (28) of the spring (22), wherein the fixing stretch (24) forms a fixing seat (30) for fixing a fixing portion of a pin of the caliper and the resting stretch (25) forms a contact portion (32) for a free resting with possibility of slipping of the spring (22) against a contact surface of the friction pad.
F16D 65/097 - Resilient means interposed between pads and supporting members
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
A spring (22) for friction pads (11) which can be associated with a caliper (2) of a disc brake (1) to bias the friction pads (11) elastically away from a brake disc (3) comprises a central stretch (26) and two opposite transverse stretches (27), extending from the central stretch (26) in two opposite transverse directions and each forming a supporting stretch (29), a resting stretch (30) and a wing stretch (31) extending between the supporting stretch (29) and the resting stretch (30), wherein the supporting stretches (29) lie on the same supporting plane (32) and the wing stretch (31) comprises: • - an ascending wing stretch (33) extending from the supporting stretch (29) away from the supporting plane (32) towards an upper side (34) of the spring (22) and away from a longitudinal median plane (28) to an upper apical point (35), • - a descending wing stretch (36) extending from the upper apical point (35) further away from the longitudinal median plane (28) and towards a lower side (37) of the spring (22) to a folding line (38) which connects the wing stretch (31) to the resting stretch (30).
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
F16D 65/097 - Resilient means interposed between pads and supporting members
Caliper body (1) of a disc brake caliper (2), comprising a first and a second elongated elements (6, 12) adapted to face braking surfaces (4) of a brake disc (3) said elongated elements (6, 12) mainly extend along the circumferential direction (C-C) and are connected at their ends by end bridges (15, 16) and they are further connected to each other by at least one central bridge (17; 18; 19) arranged between said end bridges (15, 16); either said first or said second elongated element (6, 12) comprises two connecting housings (20, 21; 22, 23) for the connection to a support for the caliper body provided on a vehicle.
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
A disc brake caliper of floating type adapted to be associated with a brake disc, comprising a caliper body (14) and a bracket (16). The bracket (16) comprises means for fastening the caliper (12) to a relative support. The caliper body (14) slides in relation to the bracket (16) in an axial direction (18). The caliper (12) comprises coupling means (20) between said caliper body (14) and said bracket (16) adapted to allow the mutual relative sliding, parallel to the axial direction (18). The coupling means (20) comprise at least one guide pin (22) and at least one guide seat (24) placed respectively on said bracket (16) and said caliper body (14) or respectively on said caliper body (14) and on said bracket (16). The coupling means comprise: at least one bushing (26, 28) provided between said guide pin (22) and said guide seat (24); and axial retention means (30) for said at least one bushing (26) adapted to limit or prevent the axial sliding of said at least one bushing (26, 28) with respect to said guide seat (24).
F16D 55/2265 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially the axial movement being guided by one or more pins
47.
PARKING DEVICE OF A BRAKE CALIPER FOR A DISC BRAKE OF A VEHICLE
A parking device (12) of a brake caliper (14) for a disc brake of a vehicle, comprises: a support body (16); thrust means provided on said support body, suitable for exerting a thrust action on at least one pad of said disc brake; actuation means (20) suitable for actuating said thrust means to exert said thrust action on said at least one pad. The actuation means comprising an actuation lever (22) rotatably connected to the support body (16). The actuation lever (22) is movable between an operating position in which the parking device (12) is active, and a rest position, in which the parking device (12) is inactive, said actuation means (20) comprising an adjustable stop (24) for said actuation lever (22) in said rest position, said actuation lever comprising a side surface, said adjustable stop being suitable to cooperate with the side surface of said actuation lever said adjustable stop being a shaped pin which realizes a cam coupling with the side surface of said actuation lever.
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
A disc assembly (1) of disc brake comprising • - a braking band (2); • - a bell (13) for connecting the disc assembly (1) to a support of a vehicle; • - at least one driving element (20); wherein • - said bell (13) comprises at least one driving bell surface (18) extending along axial and radial directions, thus forming a tangential abutment surface for the bell (13); and wherein • - said bell (13) rests on at least one surface (33, 34) of the braking band (2), or a plurality of surfaces (33, 34) of the braking band (2) substantially co-planar with one another, thus avoiding a two-sided restraint at least between said bell and said braking band (2); • - said braking band (2) comprises at least one driving band surface (9; 10; 11; 12) extending along said axial and radial directions, thus forming at least one tangential abutment surface for the band (2); • - said at least one driving element (20) slidingly rests on said at least one driving band surface (9; 10; 11; 12); • - said at least one driving element (20) is selectively movable along said at least one driving band surface (9; 10; 11; 12), at least passing: • - from a position in which it avoids resting on the bell (13) • - to a position in which it rests on the bell and restrains said bell (13) to said band in axial direction and in circumferential direction; • - thus avoiding said braking band (2) from being restrained to said bell (13) in radial direction.
The invention relates to an electro-hydraulic actuator (100) for actuating a brake caliper. The actuator comprises: an electric motor (1) with a drive shaft (2); a transforming mechanism (3) to transform a rotary motion of the drive shaft into a translational motion of a translatable portion configured to act on a hydraulic master cylinder of said brake; a first housing (5) to accommodate the transforming mechanism and support a second housing of the electric motor. Such a transforming mechanism includes a reduction gear (6; 36) configured to demultiply the rotary motion of the drive shaft. The reduction gear comprises a crown (12; 32) with inner toothing in one piece and rotationally locked. The actuator is characterized in that the crown comprises a front portion (42; 62) directly shape-coupled to and inserted in the second housing of the electric motor and a connection integral with the first housing of the transforming mechanism so as to achieve a precise centering between the electric motor and the reduction gear with respect to the axis of the drive shaft and with respect to a central axis (X) of the reduction gear.
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
50.
METHOD FOR CONTROLLING A BRAKING SYSTEM OF A VEHICLE AND RELATED SYSTEM
A method (500) for controlling a braking system of a vehicle, comprising the steps of: detecting (501 ), by a first plurality of detection devices distributed on the braking system of the vehicle, first information representative of a condition of motion of the vehicle; detecting (502), by a second plurality of detection devices belonging to a first driver assistance sub-system associated with the vehicle, second information representative of a condition of motion of the vehicle; determining (503), by a first data processing block, a first control signal of a braking module of the vehicle based on said first information and said second information; - controlling (504), by the first data processing block, the braking module of the vehicle based on the determined first control signal.
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/96 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action on speed responsive control means
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
51.
ACTUATION PUMP OF A BRAKING SYSTEM FOR VEHICLES, AND BRAKING SYSTEM FOR VEHICLES THEREOF
An actuation pump of a braking system for vehicles comprising - a pump body which identifies a direct actuation chamber and an indirect actuation chamber filled with brake fluid and in series with each other, - wherein the direct actuation chamber houses a direct piston connected to a manual actuation member, and is fluidically connected to a first delivery line which can be connected to at least one first braking device, - wherein the direct actuation chamber houses an indirect piston, mechanically separated from the direct piston, and having a first end facing the direct piston and a second end sealingly defining the indirect actuation chamber, - wherein the indirect actuation chamber is fluidically connected in output to a second delivery line which can be connected to at least one second braking device, - and wherein the indirect piston comprises a first and a second head sealingly sliding along a lateral guide wall of the indirect actuation chamber, the first head having a greater diameter than the second head and being arranged on the side of the second end, the second head facing the second delivery line, on the side opposite the second end, wherein the indirect piston divides the indirect actuation chamber into an intermediate volume, between the first and second head, and into a delivery volume, comprised between the second head and the second delivery line, - wherein the indirect piston is provided with a control valve calibrated so that, below a threshold pressure value in the indirect actuation chamber, it fluidically connects the intermediate volume and the delivery volume to each other, and upon reaching said pressure threshold value, fluidically disconnects said volumes and prevents such threshold value being exceeded in the intermediate volume.
A powder-coating process of a brake caliper (12) comprises in sequence the steps of: (a) preparing the brake caliper (12); (b) applying masking elements to at least one seat and/or duct (14) of said brake caliper (12); (c) distributing the coating powder on at least one portion of said brake caliper (12); (d) removing the at least one masking element by automated de-masking means; (e) curing inside a curing oven.
A cable-pull actuation system (4) for a parking brake, comprising - a body (8) which houses electric motor means (12), a rod (16), adapted to operate along an actuation direction (X-X), at a first end (20) thereof, an actuation member (24) of a drum brake (28) and/or of a parking brake, - transmission means (44) which operatively connect the electric motor means (12) to a second end (48) of the rod (16) which is translationally integral with a screw (52), having a thread (56), - wherein said screw (52) is engaged, by means of the thread (56), with a nut screw (60) rotationally actuated by said transmission means (44), - wherein pre-loading means (64) are provided, acting in contrast on the screw (52), said pre-loading means (64) being compressively pre-loaded by a pusher (68) so as to exert a pre-load traction on the rod (16) to offset variations of load on the rod (16), - wherein the pre-loading means (64) are configured to exert a thrust action on the rod (16) following the annulment of axial clearances, along the actuation direction (X-X), between the nut screw (60) and said body (8), so as to allow an incremental compression of the pre-loading means (64) with respect to the pre-load value.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The present invention relates to a method of making a fibrous preform in carbon and/or fibres of a carbon precursor, comprising : - a step a) of superposing at least two layers of carbon fibres and/or fibres of a carbon precursor according to a predefined superposition axis Z so as to form a multilayer body 2; a step b) of needle-punching by means of least one first needle-punching device 10 the multilayer body 2 in a needle- punching direction substantially parallel to the superposition axis Z to arrange at least part of the fibres parallel to the superposition axis Z, so as to obtain a needle-punched multilayer body 3, an optional step c) of superposing with each other according to the superposition axis Z two or more of the needle-punched multilayer bodies 3, obtained separately by applying the above steps a) and b). The fibrous preform 1 consists of a single, multi-layer, needle-punched body 3 or two or more needle-punched multilayer bodies 3 superposed with each along the superposition axis Z. In the superposition step a), the multilayer body 2 is made by superposing one or more layers of fibre in the non-woven form NW on one or more layers of fibre in the woven form W. In the needle-punching step b) the first portion of the multilayer body 2 to encounter the needles 11 of the first needle-punching device 10 consists of at least one non-woven layer NW in order to prevent the needles 11 from directly engaging the fibres of the woven layers W underneath and in such a way that the fibres 20 to be arranged parallel to the superposition axis Z belong to the above first portion consisting of at least one layer of fibre in non-woven form NW.
B32B 5/02 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by structural features of a layer comprising fibres or filaments
B32B 5/26 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer another layer also being fibrous or filamentary
B32B 7/08 - Interconnection of layers by mechanical means
D04H 1/46 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
A braking band (1) of a disc of disc brake (2) of the ventilated type, capable of avoiding vibrations which cause disturbing squealing noises during the braking action, said braking band (1) comprising two plates (3, 4) facing each other; said plates (3, 4) comprising inner surfaces (5, 6) directly or indirectly facing each other and delimiting a gap (7), said plates (3, 4) being joined to each other by heat dissipation elements or connecting elements (16, 17, 18, 19), said connecting elements (16, 17, 18, 19) being shaped as columns and/or ribs protruding from one plate towards the opposite plate in the shape of connecting bridges of the plates (3, 4), in which at least one of the plates (3; 4) comprises at least one projection (20) projecting from said plate (3; 4) into said gap (7) without reaching the opposite plate (4; 3), thus forming at least one localized narrowing of said gap (7) and a thickening of the plate body (12; 13), thus creating a localized increase of the thickness of plate (14; 15), and in which said at least one projection (20) extends at least from a first connecting element (16, 17, 18, 19) to an adjacent connecting element (16, 17, 18, 19), thus connecting said connecting elements (16, 17, 18, 19), and in which said at least one projection (20) extends at least along said circumferential direction connecting at least two adjacent connecting elements (16, 17, 18, 19) placed side-by-side in circumferential direction, and in which the group of each projection (20) extends circumferentially along a discontinuous annular path, avoiding a uniform distribution in circumferential direction
The present invention relates to a fixed brake caliper (1) for a disc brake disc (2), - said disc (2) comprising opposite braking surfaces (3, 4) and axial-symmetric disc body (5) adapted to rotate about a rotation axis (A-A) defining an axial direction (X-X), said disc body (5) develops radially along a radial direction (R-R) orthogonal to said axial direction (X-X), as well as along a circumferential direction (C-C) orthogonal both to said axial direction (X-X) and to said radial direction (R-R); said fixed caliper (1) comprising: a first half-body (6) comprising at least one first housing (7) for a first thrust device (8) to generate a first braking action; said first half-body (6) being adapted to face either directly or indirectly a first braking surface (3) of said braking surfaces (3, 4) of said disc (2); a second half-body (9) comprising at least one second housing (10) for a second thrust device (11) to generate a second braking action; said second half-body (9) being adapted to face either directly or indirectly a second braking surface (4) of said braking surfaces (3, 4) of said disc (2); at least one first bridge element (12) to connect and support said second half-body (9) to said first half-body (6); said at least one bridge element (12) comprising at least one first guiding and supporting bridge surface (13) oriented according to a first predetermined resting plane (14) and at least one second guiding and supporting bridge surface (15) oriented according to a second predetermined resting plane (16); wherein said first half-body (6) comprises at least one first protrusion (17) which protrudes in a cantilevered manner in axial direction (X-X) towards the opposite second half-body (9); said second half-body (9) comprises at least one second protrusion (18) which protrudes in a cantilevered manner in axial direction (X-X) towards the opposite first half-body (6); said first half-body (6), said second half-body (9) and said at least one bridge element (12) are three mutually separable components; and wherein said at least one first protrusion (17) delimits a first guiding and resting half- body surface (19) oriented according to said first predetermined resting plane (14) and parallel to said at least one first bridge surface (13) when said bridge element (12) is connected to said first half-caliper (6); said at least one second protrusion (18) delimits a second guiding and resting half-body surface (20) oriented according to said second predetermined resting plane (16) and parallel to said at least one second bridge surface (15) when said bridge element (12) is connected to said second half-caliper (9); said at least one bridge element (12) firmly rests said at least one first bridge surface (13) thereof against said first half- body surface (19) by connecting and orienting said at least one bridge element (12) to said first half-body (6), creating a rest for said at least one bridge element (12) in circumferential direction (C-C); said at least one bridge element (12) firmly rests said at least one second bridge surface (15) thereof against said second half-body surface (20) by connecting and orienting said at least one bridge element (12) to said second half-body (9) in circumferential direction (C-C).
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
A braking system for vehicles (4) comprising a pilot pump (8, 108, 110) equipped with manual actuation means (9), lever- and/or pedal- operated, which is fluidically connected to a hydraulic actuator device (12, 112, 114) which is operatively connected to a braking device (16, 116, 118) associated with a wheel (5, 6) of said vehicle, wherein the hydraulic actuator device delimits a first and a second actuation chamber (20, 24) separated fluidically by a septum (28) movable in an axial direction (X-X), wherein the first actuation chamber (20) delimits a first volume (32) which contains fluid pressurized by the pilot pump via the manual actuation means, wherein the second actuation chamber (24) delimits a second volume (36) which contains pressurised fluid and is equipped with a delivery duct (40) fluidically connected to said braking device. The hydraulic actuator device comprises a by-pass (44), configured to fluidically connect or disconnect the first actuation chamber and the delivery duct. The movable septum is connected to motor means (48, 148, 150) so that it may translate axially, regardless of the braking action imposed by the pilot pump via the manual actuation means. The system (4) is comprising a control unit (56) operatively connected with said motor means and programmed to switch from a standard operating condition or deactivation of the motor means, wherein the movable septum places in communication the first actuation chamber with the by-pass, with the second actuation chamber and with the delivery duct, to a braking correction condition wherein the motor means are actuated to translate the movable septum so that the first actuation chamber is separated fluidically from the delivery duct, and so that the second actuation chamber is fluidically connected to the delivery duct to control the actuation of the braking device via the pressurised fluid contained in the second actuation chamber, wherein the movable septum comprises a collar (53) and a stem (54), the collar realising the hydraulic separation between the first and second actuation chamber, the stem passing through said first and second actuation chamber and being operatively connected to the motor means.
B60T 8/42 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure
B60T 8/176 - Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
A disc (1) for disc brake comprising a braking band (2); a bell (6), suitable to form a connection with the wheel hub of a vehicle associable with the disc (1); a plurality of elastic elements (11), suitable to elastically bias said braking band (2), a plurality of radial teeth (7) housed in a plurality of bell seats (10), so that said internal bell surface (16) is locally aligned with a radially internal edge surface (17) of each radial tooth (7); each elastic element (11) of said plurality of elastic elements (11) is removably connected to at least one axial tooth (9) of said bell; each elastic element (11) of said plurality of elastic elements (11 ) embraces at least one portion of a first axial tooth side (18), of a second axial tooth side (19) and of a at least one circumferential tooth side (20) of at least one radial tooth (7) of the braking band (2), elastically preloading said at least one radial tooth (7) with respect to said bell (6).
Method for manufacturing a brake disc comprising a braking band and a bell, comprising the following operating steps: a) providing a mould having an internal cavity comprising a first portion of shape corresponding to the braking band of the brake disc to be made and a second portion of shape corresponding to the bell of the brake disc to be made, wherein the first and second portions of said internal cavity are communicating with each other; b) providing a preform made of porous ceramic material having the shape of the braking band of the brake disc to be made; c) placing said preform inside the mould at the first portion of said inner cavity; e) introducing a liquid or semi-solid aluminium alloy inside the whole internal cavity of the mould so as to infiltrate the preform of porous ceramic material with said aluminium alloy, obtaining at the first portion an aluminium- based metal matrix composite reinforced by said ceramic preform which defines the braking band of the brake disc to be made, and so as to fill the second portion with said aluminium alloy, obtaining an aluminium alloy casting which is connected in one piece with the braking band made of a metal matrix composite and defines the bell of the brake disc to be made.
ENEA - AGENZIA NAZIONALE PER LE NUOVE TECNOLOGIE, L'ENERGIA E LO SVILUPPO ECONOMICO SOSTENIBILE (Italy)
Inventor
Alemani, Mattia
Tironi, Mario
Magnani, Giuseppe
Burgio, Federica
Abstract
The present invention relates to a method of making a porous preform in silicon carbide with controlled porosity. The method comprises the operating steps: - a) forming a mass of silicon carbide powders in a mould obtaining a semi-finished preform with an initial porosity ϕ1 - b) pre- sintering said semi-finished preform in an inert atmosphere at a temperature in the range of 1,600°C to 2,000°C, obtaining a pre-sintered preform with an intermediate porosity (ϕ2) higher than the initial porosity ( ϕ1); - c) subjecting said pre- sintered preform to one or more heat treatment cycles. Each heat treatment cycle comprises in sequence: - a sub- phase c1) of oxidation in air at a temperature in the range of 700°C to 1, 250°C; and - a sub-phase c2) of partial sintering at a temperature in the range of 1,600°C to 2,000°C. After the aforesaid step c) a porous preform in at least partly sintered silicon carbide is obtained with a final porosity ϕ3 higher than the intermediate porosity ϕ2 of said sintered preform. Each heat treatment cycle causing a progressive increase of the porosity of said preform. The number of heat treatment cycles to be performed on said pre-sintered preform is defined as a function of the value of final porosity ϕ3 to be obtained in the porous preform of at least partially sintered silicon carbide so as to control the final porosity value ϕ3 of the porous preform.
Braking system for vehicles (4) comprising - a first brake group (8) and a second brake group (12) intended to be installed on the same axle of a vehicle or on separate axles of a vehicle, - the first brake group (8) comprising a first braking device (16), first electro-hydraulic actuator means (20) operatively connected to the first braking device (16) by means of a first hydraulic actuation duct (24), - the second brake group (12) comprising a second braking device (28), second electro-hydraulic actuator means (32) operatively connected to the second braking device (28) by means of a second hydraulic actuation duct (36), - an interconnection branch (52) between the first and the second hydraulic actuation ducts (24,36), provided with a control valve (56), - at least one control unit (60) for the brake groups (8, 12), operatively connected to the electro-hydraulic actuator means (20,32) and to the control valve (56), - the control unit (60) being programmed to actuate the control valve (56) so as to: - disconnect the first and second hydraulic actuation ducts (24, 36) from each other in the event of standard operation or absence of malfunctions in the brake groups (8, 12), fluidically connect the first and second hydraulic actuation ducts (24,36) to each other in the event of an electrical fault in a brake group (8,12).
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
62.
BRAKE CALIPER THRUST DEVICE, BRAKE CALIPER AND MANUFACTURING METHOD
A brake caliper thrust device (1) for a disc brake comprising a thrust device body (4), adapted to be translated inside a guide device (5); said thrust device body (4) defining an internal cavity (6) at least partially open and facing towards the object to be pushed, for example a brake pad (7) associable with the thrust device (1); said internal cavity (6) being delimited by at least one internal surface (8) defined by at least one wall (9, 31) of the thrust device (1); wherein, from said at least one wall (9, 31) of the thrust device (1), at least one heat dissipation element (10) protrudes into said internal cavity (6), adapted to increase the extension of said at least one internal surface (8) to evacuate the heat accumulated by said at least one wall (9, 31) of the thrust device (1).
09 - Scientific and electric apparatus and instruments
41 - Education, entertainment, sporting and cultural services
Goods & Services
downloadable podcasts in the field of brake calipers, discs, brakes and braking systems for land vehicles entertainment services, namely, providing podcasts in the field of brake calipers, discs, brakes and braking systems for land vehicles
09 - Scientific and electric apparatus and instruments
41 - Education, entertainment, sporting and cultural services
Goods & Services
downloadable podcasts in the field of brake calipers, discs, brakes and braking systems for land vehicles Entertainment services, namely, providing podcasts in the field of brake calipers, discs, brakes and braking systems for land vehicles
A braking band of a disc for disc brake, comprising a first plate and a second plate, a group of connecting fins (9, 10) which connect said first plate and said second plate, defining a module repeated according to said circumferential direction (C-C); wherein said first fin (9) extends along a first longitudinal direction (11) between said radially inner edge and said radially outer edge forming a circumferentially arched first stretch of first fin (13), said first stretch of first fin (13) having a first concavity (R13) which is kept in the same sense along the entire extension of the first stretch of first fin (13) in said first longitudinal direction (11); a circumferentially arched first fin second stretch (14), having a second concavity (R14), a circumferentially arched first fin third stretch (15), a circumferentially arched first fin fourth stretch (16), and wherein said second fin (10) develops along a second longitudinal direction (12) between said radially inner edge (8) and said radially outer edge (7) and wherein the length of said first fin (9) is smaller than said second fin (10).
A braking band (1) of a disc (2) for disc brake (3) comprising a first plate (4) and a second plate (5), arranged mutually facing each other so as to form a gap (6); a plurality of connecting elements/spacers comprising a plurality of connecting fins (9, 10), each connecting fin (9, 10) extending continuously between said radially inner peripheral portion (8) and said radially outer peripheral portion (7) of the braking band (1) along a longitudinal fin direction, which substantially coincides with the longitudinal development axis of the connecting fin; at least some connecting fins of said plurality of connecting fins (9, 10) extend along a longitudinal fin direction and comprise at least one arched stretch having a concavity which is kept in the same sense along the entire longitudinal extension of the at least one arched stretch of said some connecting fins (9, 10), defining ventilation channels (33), each having at least one curved wall in circumferential direction (C-C); said first plate inner surface (27) comprises a plurality of first plate protrusions (66) which project into said gap (6) from said first plate inner surface (27) towards said second plate (5); said second plate inner surface (28) comprises a plurality of second plate protrusions (68) which project into said gap (6) from said second plate inner surface (28) towards said first plate (4).
ACTUATOR DEVICE FOR A HYDRAULIC ACTUATION SYSTEM OF A BRAKE/CLUTCH OF A MOTORCYCLE, WITH SEPARATE ADJUSTMENT OF THE DISTANCE AND PITCH OF THE ACTUATION LEVER
An actuator device (4) comprising a support structure (8) associable with a handlebar (12), an actuation assembly (16) having a push rod (20), operatively connectable to at least one braking device, an actuation lever (24) connected to the support structure (8) so as to be rotatable about an actuation axis (S-S), provided with a pusher (32) adapted to interface with the said push rod (20), - adjustment means (40) adapted to modify both the angular position, in a rest condition, of the pusher (32) and of the actuation lever (24) with respect to the handlebar (12) and to modify a pitch (44) between the actuation axis (S-S) of the actuation lever (24) and a contact and thrust point (P) of the pusher (32) on said push rod (20).
A braking system for vehicles (4) comprising: - a right front brake group (8d) and a left front brake group (8s) intended for the front axle (12) of a vehicle, right rear brake group (16d) and a left rear brake group (16s) intended for a rear axle (20) of a vehicle, - each brake group (8d, 8s, 16d, 16s) comprising a brake disc (24), a braking device (28) associated with said brake disc (24), electromechanical actuator means (32) of each braking device (28), - a control unit (36) for each brake group (8d, 8s, 16d, 16s), operatively connected to the electromechanical actuators (32) of each brake group (8d, 8s, 16d, 16s) through a relative piloting device (40), - each control unit (36) being powered by a power source (44) thereof and being galvanically isolated from the other power sources (44), - each control unit (36) being programmed to implement, via said piloting device (40), a standard braking strategy in case of detection of a standard operation of each brake group (8d, 8s, 16d, 16s) and a fault braking strategy, if it detects an electrical fault of one or more of the brake groups (8d, 8s, 16d, 16s).
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 13/66 - Electrical control in fluid-pressure brake systems
The object of the present invention is a braking device (1) for a vehicle leading to an increased driving comfort of the vehicle with which an increased heat exchange efficiency simultaneously is associated, comprising a brake disc (2) of a disc brake (40) suitable for rotating about a rotation axis (A-A), in which said disc (2) comprises a disc body (3); and in which said disc body (3) comprises a braking band (4) having opposite braking surfaces (5, 6); and in which said disc body (3) comprises at least one connection portion (7), or bell, suitable for connecting the disc (2) to a connection device (8) of a vehicle associable with the braking device (1); and in which said braking band (4) defines an axial direction (X-X) parallel to the rotation axis (A-A) of the disc (2), a radial direction (R-R) orthogonal to the axial direction (X-X) and a tangential or circumferential direction (C-C) orthogonal both to the axial direction (X-X) and to the radial direction (R-R); and in which said connection portion (7) is connected to said braking band (4) by means of connecting elements (9), said connecting elements are a plurality of elements which are equally spaced apart in circumferential direction (C-C); said plurality of connecting elements are a prime number, in which there are seven of said connecting elements (9).
A brake disc assembly (1) comprising: a brake band (2), a bell (3), adapted to be operatively connected to a vehicle wheel associable with the brake disc assembly (1), and at least one connecting device (4), which forms a connection between said brake band (2) and said bell (3); said connecting device (4) and said bell (3) cooperate by delimiting at least one axial band seat (5) where the brake band (2) may slide in an axial direction (X-X) of a predetermined axial stroke; said bell (3) comprises at least a first end-of-stroke surface (6) which forms a first abutment surface in the axial direction (X-X) for said brake band (2); said connecting device (4) comprises a second end-of-stroke surface (7), opposite to said first end-of-stroke surface (6), which forms a second opposite abutment surface in the axial direction (X-X) for said brake band (2); said connecting device (4) comprises at least one male element (8), which is accommodated in at least one male element bell seat (14) obtained in said bell (3); said male element (8) comprises at least one bell abutment surface (9); said bell (3) comprises at least one male element abutment surface (10); said bell abutment surface (9) of the male element (8) forming an abutment surface in the axial direction (X-X) for said male element abutment surface (10) of the bell (3) so as to avoid said connecting device (4) and said bell (3) from tightening said brake band (2) therebetween.
The invention relates to a preform for making a component of a braking system, consisting of a fibre- reinforced ceramic composite material, obtained by forming and subsequent pyrolysis of a pre-preg. Such pre-preg comprises a fibrous mass impregnated with a polymeric binder composition based on one or more resins selected from the group consisting of siloxane resins and silsesquioxane resins and can optionally comprise one or more organic resins. Siloxane resins comprise polysiloxanes and silsesquioxane resins comprise polysilsesquioxanes. The aforesaid polymeric binder composition appears as a liquid having a viscosity from 55000 to 10000 mPas at temperatures from 50°C to 70°C. The fibre-reinforced composite ceramic material comprises a ceramic or partially ceramic matrix, which develops itself in the interstices of the fibrous mass and comprises silicon carbide and amorphous structures consisting of Si-O-C chains. The silicon carbide and the aforesaid Si-O-C chains have been generated by the process of pyrolysis on said polysiloxanes and/or said polysilsesquioxanes. The fibre-reinforced ceramic composite material has a porosity generated by pyrolisis on the polymeric binder composition of the pre-preg. The invention further relates to a component of a braking system made wholly or in part from said preform, and a method for making a preform in a fibre-reinforced ceramic composite material.
The present invention relates to a method for making a brake disc, comprising the following operating steps: a) providing a disc brake comprising a braking band and provided with two opposite braking surfaces, made of aluminum or aluminum alloy or cast iron or steel; b) depositing on the disc a layer of chromium carbide (Cr3C2) and nickel-chromium (NiCr) in particle form, whereby forming a base protective coating (30) which covers at least one of the two braking surfaces of the braking band in direct contact therewith; and c) depositing on said base protective coating (30) a material in particle form consisting of tungsten carbide (WC), iron (Fe), chromium (Cr) and aluminum (Al), whereby forming a surface protective coating (3), consisting of tungsten carbide (WC) and iron (Fe), chromium (Cr) and aluminum (Al) and covering at least one of the two braking surfaces of the braking band. Both protective coatings are made by means of the HVOF (High Velocity Oxygen Fuel) or HVAF (High Velocity Air Fuel) or KM (Kinetic Metallization) techniques.
C23C 24/04 - Impact or kinetic deposition of particles
C23C 28/02 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of metallic material
C23C 28/04 - Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of main groups , or by combinations of methods provided for in subclasses and only coatings of inorganic non-metallic material
C23C 4/067 - Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
73.
METHOD FOR ESTIMATING A BRAKING FORCE APPLICABLE BETWEEN PAD AND BRAKE DISC BY AN ELECTRIC PARKING-BRAKING SYSTEM OF A VEHICLE AND ELECTRIC PARKING-BRAKING SYSTEM OF A VEHICLE IMPLEMENTING SUCH METHOD
A method for estimating a braking force applicable between pad and brake disc by an electric parking-braking system of a vehicle, the vehicle comprises: at least a first moving member; a first brake disc mounted to said at least a first moving member; a first brake caliper operatively associated with the first brake disc, the first brake disc comprising a first pair of pads adapted to be actuated to apply a braking force to the first brake disc, The system comprises: a first piston, operatively connected to a first pad of the first pair of pads of the first brake caliper, which can be actuated to thrust the first pair of pads of the first brake caliper so as to apply a braking force between the first pair of pads of the first brake caliper and the first brake disc; an electric motor operatively connected to the first piston by means of an electromechanical mechanism adapted to transform a rotary motion of the electric motor into a linear motion of the first piston; a data processing unit operatively connected to an actuator of the electric motor; one or more sensors for detecting electric quantities of the electric motor, operatively connected to the data processing unit. The method (200) comprises the steps of: detecting (201), by said one or more sensors of electric quantities of the electric motor, an electric current i(t) delivered to the electric motor and an instantaneous value of the electric voltage for electrically supplying the electric motor, during a parking- braking operation, the parking-braking operation comprising a first non-contact stage between the first pair of pads of the first brake caliper and the first brake disc, which is between a first time instant representative of the beginning of the parking-braking operation and a second time instant representative of the beginning of the contact between the first pad of the first pair of pads and the first brake disc, the parking-braking operation further comprising a second contact stage between the first pair of pads of the first brake caliper and the first brake disc, which is between the second time instant and a third time instant representative of the end of the parking-braking operation, a set further time instant being defined in the second contact stage between the second time instant and the third time instant; determining (202), by the data processing unit, starting from the set further time instant, an instantaneous braking force value at an estimate time instant on the basis of the electric current i(t) detected between the second time instant and the estimate time instant and of the electric voltage v(t) detected between the second time instant and the estimate time instant.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The present invention relates to a brake caliper and at least one pad assembly (1) comprising a brake caliper (2) and at least one brake pad (3); said at least one brake pad (3) comprising at least one pad retention device (4); said retention device (4) being securely attached to said brake pad (3) so as to prevent a related movement thereof with respect to the brake pad (3) during the normal use thereof; said brake caliper (2) comprising at least one actuation device (5) of movement and application of a braking action, along a thrust direction (X-X), to said brake pad (3) to abut it against at least one braking surface (11) of a disc of a disc brake (12); said actuation device defining a radial direction (Z-Z) orthogonal to the thrust direction of the actuation device (X- X); wherein each actuation device (5) comprises at least one actuation device seat (6) having at least one seat opening (13) substantially facing said brake pad (3), wherein said seat (6) receives at least one retention device coupling portion (14) of the retention device (4) through said seat opening (13); said assembly comprises at least one coupling ring (8); said coupling ring (8) is accommodated in said seat (6) leaving a radial clearance (Gr) between said coupling ring (8) and said seat (6); said coupling ring (8) is free to move in a radial direction parallel to the thrust device radial direction (Z-Z); said coupling ring (8) is accommodated in said seat (6) leaving an axial clearance (Ga) which is cancelled when the pad retention device is inserted into the coupling ring, between said coupling ring (8) and said seat (6); said coupling ring (8) is free to move in an axial direction parallel to the thrust device thrust direction (X-X) and is limited in its stroke so as to prevent it from escaping from said seat (6) during the normal use; said retention device coupling portion (14) of said retention device (4) is removably snappingly coupled to said coupling ring (8), removably connecting the at least one brake pad (3) with the at least one actuation device (5) during the normal use of the at least one brake pad (3).
A caliper and supporting assembly (1) for a disc brake comprising a brake caliper (3) comprising a caliper body (5), adapted to straddle an associable disc (2) of the disc brake; said caliper and supporting assembly (1) comprising a supporting element (4) connected to said caliper body (5); wherein said caliper body (5) comprising a first portion (7); said supporting element (4) comprising a second portion (8); during the braking action the caliper body (5) elastically deforms according to at least one predetermined direction (T-T), thereby determining the displacement in at least said predetermined direction (T-T) of the first portion (7) of the caliper body (5) with respect to said second portion (8) of the supporting element (4); said caliper and supporting assembly (1) comprises at least one detecting device (6) which detects a distance (d) at least along said predetermined direction (T-T) between said first portion (7) of the caliper body (5) and said second portion (8) of the supporting element (4).
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/226 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
76.
METHOD FOR ACTUATING A PARKING BRAKE SYSTEM AND PARKING BRAKE SYSTEM
The present invention relates to a method for actuating a parking brake system of a vehicle (12) comprising at least three brake calipers (20, 21) associated with one or more axles (14, 15, 16) of the vehicle, comprising the following steps: -providing at least one device (26, 126, 226) for detecting the vehicle status; -acquiring a value (R) of the vehicle status, or detected value (R), with said detection device (26, 126, 226); -comparing the detected value (R) with a reference value (Rref) of the vehicle status, or reference value (Rref), and alternatively proceeding with one of the following options: -if the detected value (R) is less than the reference value (Rref), actuating two brake calipers (20) of the at least three brake calipers (20, 21); or -if the detected value (R) is equal to or greater than the reference value (Rref), actuating all the at least three brake calipers (20, 21).
B60T 7/12 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
77.
BRAKING SYSTEM FOR BRAKE BY WIRE VEHICLES PROVIDED WITH HYDRAULIC FEEDBACK SIMULATOR, AND ACTUATION METHOD OF A BRAKING SYSTEM FOR VEHICLES
A braking system for vehicles (4) comprising a pilot pump (8) provided with a manual actuation means (12), lever and/or pedal, which is fluidically connected, by means of a first hydraulic duct (16), to an absorber device (20) which simulates the driving resistance offered by at least one braking device (24', 24'') associated with a wheel of said vehicle, wherein a first shut-off valve (28) is arranged along said first hydraulic duct (16), at least one actuator device (32', 32''), electromechanical and/or electrohydraulic, operatively connected to at least one electricity storage device (36', 36'') and said at least one braking device (24', 24'') for actuating the latter, at least one sensor (40, 42, 44), belonging to a group comprising position sensors (40), force sensors (42), pressure sensors (44), adapted to detect the onset and the magnitude of a request for braking action exerted by the user through said lever or pedal (12). The system (4) comprises at least one control unit (30', 30'') operatively connected to said at least one sensor (40, 42, 44) and to the at least one actuator device (32', 32'') and being programmed so as to actuate the braking device (24', 24'') by means of the actuator device (32', 32'') when it receives from said sensors (40, 42, 44) a braking action request signal. The control unit (30', 30'') is programmed so as to correct the braking action requested by the user, actuating the actuator device (32', 32' ') so as to avoid blocking of one or more wheels or the occurrence of instability of the vehicle during braking, wherein the control unit (30', 30' ') is programmed to induce on the manual actuation means (12) at least one vibration when it corrects the braking action requested by the user.
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
78.
INTEGRATED MASTER-CYLINDER FOR BRAKE-BY-WIRE BRAKING SYSTEM AND BRAKE-BY-WIRE BRAKING SYSTEK WITH THE SAME
A brake pump (8) for the braking system of vehicles (4) having a pump body (16) comprising: a first and a second delivery circuit (20,24) fluidically connectable to at least a first and a second braking device (28,32), - wherein the first delivery circuit (20) comprises an indirect stage (36) fluidically connectable to the first braking device (28) and a direct stage (40) intercepted by a first control valve (44), fluidically connectable alternately to a braking simulator (48) and to said at least one second braking device (32) so as to alternately connect the direct stage (40) to the braking simulator (48) or to said at least one second braking device (32) for the actuation thereof, - wherein the second delivery circuit (24) is intercepted by said first control valve (44) so as to actuate the second braking device (32) alternately to the direct stage of the first delivery circuit (20). The pump body (16) has an input connection (56) to an actuating hydraulic circuit (60), traversed by an actuating fluid different from the said brake fluid and fluidically separated therefrom, and houses a first and a second float (72,76), fluidically connected respectively in output to the direct (40) and indirect (36) stages of the first delivery circuit (20). Moreover, the pump body (16) houses a third float (96) operatively connected, in input, to the input connection (56) of the hydraulic actuation circuit (60) and, in output, to the second delivery circuit (24).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 11/16 - Master control, e.g. master cylinders
B60T 11/20 - Tandem, side-by-side, or other multiple master-cylinder units
B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
79.
METHOD AND SYSTEM FOR CONTROLLING THE REGENERATIVE BRAKING TORQUE OF A VEHICLE
A method (300) for controlling the regenerative braking torque of a vehicle (100), the vehicle (100) comprising at least one first axle on which at least one first moving member (R1) of the vehicle (100) is mounted and at least one second axle on which at least one second moving member (R2) of the vehicle (100) is mounted, the vehicle (100) further comprising a braking system (200) comprising a first plurality of components (201) operatively associated with said at least one first axle and a second plurality of components (201) operatively associated with said at least one second axle, the vehicle (100) comprising at least one traction and regenerative braking supply module (203) configured to provide the regenerative braking torque to one or more regenerative braking torque actuation modules with which the vehicle (100) is provided, the vehicle (100) further comprising a battery module (2) and at least one data processing unit (204) operatively connected to said at least one traction and regenerative braking supply module (203), to the first plurality of components (201) of the braking system (200), to the second plurality of components (202) of the braking system (200). The method (300) comprises steps of: detecting (301), by the at least one data processing unit (204), a first information representing a deceleration request of the vehicle (100); detecting (302), by the at least one data processing unit (204), a second information representing a speed of at least one of the vehicle (100), the first moving member (R1) of the vehicle (100) and the second moving member (R2) of the vehicle (100); determining (303), by the at least one data processing unit (204), a first temperature value of at least one component of the first plurality of components (201 ) of the braking system (200) operatively associated with said at least one first axle; determining (304), by the at least one data processing unit (204), a second temperature value of at least one component of the second plurality of components (202) of the braking system (200) operatively associated with said at least one second axle; determining (305), by the at least one data processing unit (204), a third information representing the state of at least one of the battery module (205) and said at least one traction and regenerative braking supply module (203); determining (306), by the at least one data processing unit (204), a regenerative braking power dynamic distribution ratio between the first axle and the second axle on the basis of the first information, of the first temperature value and of the second temperature value; determining (307), by the at least one data processing unit (204), a first regenerative braking torque value to be applied to the first axle and a second regenerative braking torque value to be applied to the second axle on the basis of the determined regenerative braking power dynamic distribution ratio, of the second information and of the third information; providing (308), by the at least one data processing unit (204), the first regenerative braking torque value and the second regenerative braking torque value to said at least one traction and regenerative braking supply module (203).
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
B60L 11/18 - using power supplied from primary cells, secondary cells, or fuel cells
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
80.
BRAKING SYSTEM VALVE ASSEMBLY AND BRAKE CALIPER BODY WITH SAID ASSEMBLY
A valve assembly (1) for a braking system, comprising a valve body (2), which at least partially delimits a master cylinder side opening (3), at least one caliper side opening (4), and at least one valve pipe (5), which puts said master cylinder side opening (3) and said caliper side opening (4) into fluid communication; a shutter element (6) housed in said valve pipe (5); wherein said caliper side opening (4) is fluidically opposite to said master cylinder side opening (3) with respect to said shutter element (6); and wherein said shutter element (6) comprises a shutter body (7) movable with respect to the valve body (2) between a valve closing position, in which said shutter body (7) abuts against a first abutment portion (8) of the valve body (2), and at least one valve opening position, wherein said shutter body (7), moved away from said first abutment portion (8) of the valve body (2), delimits with said valve body (2) at least one main fluid passage (9) which laps on said shutter body (7); and wherein, when said shutter body (7) is in the valve closing position, it interrupts said at least one main fluid passage (9) and defines a master cylinder side pipe stretch (10) facing said master cylinder side opening (3) and a caliper side pipe stretch (11) facing said caliper side opening (4) in said valve pipe (5); and wherein said shutter body (7) at least partially delimits at least one secondary fluid passage (12), so that, when said shutter body (7) is in valve closing position, said master cylinder side pipe stretch (10) is in fluid communication with said caliper side pipe stretch (11) only through said secondary fluid passage (12).
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 8/36 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
A brake caliper and hub bracket assembly (1) for a disc brake (2) of a vehicle, said brake caliper (3) comprising a first elongated element (8) suitable for directly or indirectly facing said first braking surface (5) of the brake disc (4) by means of at least a first brake pad (11), and a second elongated element (9) opposed to said vehicle side elongated element (8) and suitable for directly or indirectly facing said second braking surface (6) of the brake disc (4) by means of at least a second brake pad (12); wherein said vehicle side elongated element (8) comprises at least a first thrust means seat (16) suitable for receiving a piston for exerting a thrust action on said at least a first brake pad (11); and wherein said wheel side elongated element (9) comprises at least a second thrust means seat (17) suitable for receiving a piston for exerting a thrust action on said at least a second brake pad (12); said caliper body (7) comprising at least one side caliper bridge (10) suitable for straddling the brake disc (4), said caliper side bridge (10) connecting said vehicle side elongated element (8) and said wheel side elongated element (9); said hub bracket (13) connected to at least one portion of the caliper body (7), said hub bracket body (14) comprising at least one coupling surface (15) suitable for coupling to at least one bearing for supporting a wheel hub (18) connectable to the brake disc (4) and to a wheel of the vehicle.
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
Disc brake disc (1) with a parking brake cylindrical surface (2) adapted to cooperate with shoes (3, 4) of a parking brake, unwontedly capable of an effective parking braking, comprises: • -a braking band (5) comprising opposite braking surfaces (6, 7) and a geometric connection portion of band (8) connecting the braking band (5) to a bell (9); • -said bell (9) comprising a connection plate (10) with a wheel hub and an annular geometric connection portion of bell (11) for the geometric connection of the bell (9) to the geometric connection portion of band (8); • -said braking band (5) and said bell (9) being pieces separate from each other and geometrically coupled to each other by means of said geometric connection portions of band (8) and bell (11) so as to transfer the braking action exerted by a brake caliper on said opposite braking surfaces (6, 7) from said braking band (5) to said bell (9) and thus to said hub; • -said bell (9) comprising a geometric bell connection surface (12) opposite to said braking band (5); wherein • -said disc brake disc (1) comprises a parking ring (13) comprising radially and internally an inner portion of ring (14), internally delimited by said parking brake cylindrical surface (2), and radially and externally a geometric ring connection portion (15); • -said parking ring (13) being in a separate piece from said bell (9) and said braking band (5); • -said geometric ring connection portion (15) being geometrically coupled to said geometric bell connection surface (12) to transfer the parking braking action exerted by the shoes (3, 4) on the parking brake cylindrical surface (2) to said bell (9) and thus to the hub.
Hydraulic component (4), in particular for braking systems and/or clutch drives, comprising - at least one connector (8) and an eyelet (16), - an inlet plug (20) that brings fluid into a block (32), - at least one upper seal (64) interposed between an upper surface (68) of the eyelet (16) and a head (72) of the inlet plug (20), - at least one bottom seal (80) interposed between a lower surface (84) of the eyelet (16) and a base (88) of the block (32), wherein between at least one of said upper and lower surfaces (68, 84) and the corresponding head or base a protuberance is interposed (96a, 96b), so that, in the absence of the corresponding seal (64, 80), the protuberance (96a, 96b) creates an interspace (100) allowing the leakage of fluid.
Caliper body (1) for disc brake (100) comprising a first and a second elongated elements (3, 9), wherein one of said elongated elements (3, 9) comprises at least one thrust means housing (12) adapted to bias one pad (14, 16) against a braking surface of the brake disc (7); said at least one thrust means housing (12) is substantially cup-shaped and comprises a housing bottom wall (27) and a housing lead-in edge portion (28), axially opposite to said housing bottom wall (27), said housing lead-in edge portion (28) comprises at least one housing edge surface (33), adapted to face a back (29) of a support plate (31) of said pad (14, 16); and wherein at least one of said first or said second elongated element caliper inner side (5, 11) comprises one groove bottom wall (18) and groove sides (19) which delimit at least one groove (20), wherein said at least one groove bottom wall (18) is axially outer with respect to said housing edge surface (33).
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
F16D 65/847 - Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
A braking band (1) of a disc (2) for disc brake of ventilated type, wherein said braking band (1) comprises two plates (3, 4); said two plates (3, 4) are coaxial with their rotation axis (A-A); said two plates (3, 4) comprise two inner side surfaces (5, 6) which are arranged facing each other; said two inner side surfaces (5, 6) are mutually spaced apart forming a ventilation duct (7); said two plates (3, 4) are connected to each other by means of at least pin elements (8, 9, 10, 11, 12) which project from an inner side surface (5) of a first plate (3) to reach the facing inner side surface (6) of the facing plate (4); said pin elements (8, 9, 10, 11, 12) are a plurality of pin elements distributed circumferentially in uniform manner in order to form circular rings, or ranks, determining a rank of inner pin elements (8) arranged closer to the rotation axis (A-A), a rank of outer pin elements (12) arranged further from the rotation axis (A-A), and intermediate ranks of pin elements (9, 10, 11).
A method (400) for controlling the braking action applicable by a brake caliper on a mechanical movement member of a vehicle, said brake caliper being actuatable by an actuator assembly comprising at least one electric motor and an actuator of the brake caliper, the electric motor being operatively connected to the actuator by means of a transmission mechanism, the electric motor being configured to operate the actuator by means of the transmission mechanism. The method (400) comprises the steps of: receiving (401), by an electronic control unit operatively connected to the actuator assembly, an input signal representative of a braking request; determining (402), by the electronic control unit, on the basis of the received input signal, a first reference value of a position of a component in the actuator assembly and a second reference value of a parameter representative of the braking action applicable by the brake caliper by means of the actuator assembly; determining (403), by the electronic control unit, a first feedback value of the position of a component in the actuator assembly; determining (408), by the electronic control unit, a second feedback value of the parameter representative of the braking action applicable by the brake caliper by means of the actuator assembly; generating (411), by the electronic control unit a first intermediate control signal of the actuator assembly on the basis of the comparison between the first feedback value of the position of a component in the actuator assembly and the first reference value of the position of a component in the actuator assembly; and a second intermediate control signal of the actuator assembly on the basis of the comparison of the second feedback value of the parameter representative of the braking action applicable by the brake caliper by means of the actuator assembly and the second reference value of the parameter representative of the braking action applicable by the brake caliper by means of the actuator assembly; generating (412), by the electronic control unit, a control signal of the actuator assembly on the basis of the first intermediate control signal of the actuator assembly and of the second intermediate control signal of the actuator assembly; providing (417) to the electric motor of the actuator assembly, by the electronic control unit, the generated control signal.
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
The present invention relates to a brake caliper (1, 1') for a disc brake (10) comprising a caliper body (2), a brake pad (3) and at least one retraction device (4) of the brake pad from a braking disc (5), said device (4) being configured to retract said brake pad (3) from at least one of opposite braking surfaces (6, 7) delimited by the braking disc (5). The brake pad (3) comprises a friction material (8) delimiting a pad plane (11) adapted to lean against the braking surface (6, 7) to exert a braking action on the braking disc (5), said brake pad (3) being adapted to receive a thrust along an axial direction (X-X) by at least one thrust device (15) hosted in the caliper body (2). The caliper body (2) delimits a first pad abutment surface (12), inclined in a non-orthogonal direction with respect to the pad plane (11) and with respect to said axial direction (X-X), to delimit a tapered space (13) with the braking surface (6, 7) of the braking disc (5), the first pad abutment surface (12) being oriented so that, during the braking action, said surface (12) guides the brake pad (3) wedging in the tapered space (13). Furthermore, the brake pad (3) delimits a retraction surface (14), inclined in a non-orthogonal direction with respect to the pad plane (11) and oriented so that, during the retraction action, the brake pad (3) is guided partially outside of the tapered space (13). The retraction device (4) of the brake pad (3) comprises a working portion (16, 17), movable in a transverse direction (Y-Y), either incident or substantially orthogonal with respect to the axial direction (X-X), said portion (16, 17) being pressed in abutment of the retraction surface (14), slidably along the latter, to retract the brake pad (3).
A lever assembly (1), which is surprisingly simple to be constructed and reliable to be used, comprises: - a control lever (2) having at least one lever coupling portion (3) delimiting a lever rotation seat (4); - a lever support (5) comprising at least one support tooth (6; 7), said at least one support tooth (6; 7) delimiting a tooth seat (8; 9); - an articulation pin (10) received in said tooth seat (8; 9) of at least one support tooth (6; 7) and received in said lever rotation seat (4) for the rotation of the control lever (2) with respect to said lever support (5); wherein said lever assembly (1) comprises at least one cover (11) connected to said lever support (5) at least partially closing one of said tooth seat (8) and rotation seat (4) to prevent the pin (10) from exiting said seats (4, 8), thus rotatably constraining the lever (2) to the support (5).
The present invention relates to a spring device for disc brake, a pad and spring assembly for a disc brake, a brake caliper, and a disc brake, wherein said spring device (10) comprises a spring body (11) having prevalently longitudinal development, comprising at least one coupling portion (12), to couple in snapping manner said spring device (10) to a portion of an associable brake caliper (1) in a removable manner, and opposite thrust portions (13, 14) to bias at least one brake pad (8, 9) in axial direction (X-X) away from the disc (4), in radial inner direction (Rl) and in tangential direction (T- T) in opposition to the rotation direction of the disc (4) to contrast the tangential acceleration of the brake pad (8, 9) during the braking action.
F16D 55/224 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
F16D 65/097 - Resilient means interposed between pads and supporting members
90.
A BRAKE-BY-WIRE AUTOMATIC BRAKE SYSTEM FOR VEHICLES
A brake system (4) for vehicles comprising • a manual actuator device (8), operable by means of a lever and / or a pedal (12), selectively connectable to at least one braking device (16, 16') placed on a first axle (20) of the vehicle, and at least one braking device (16, 16") placed on a second axle (24) of the vehicle, each braking device (16, 16', 16") acting on a respective brake disc or drum (18), • at least one front automatic actuator device (28), operatively connected to said manual actuator device (8) by means of a first control unit (32), and to the at least one braking device (16, 16') of the first axle (20) of the vehicle, • at least one rear automatic actuator device (36), operatively connected to the manual actuator device (8) by means of a second control unit (40), and to the at least one braking device (16, 16") of the second axle (24) of the vehicle, • wherein said control units (32,40) are programmed so as to actuate the respective automatic front and rear actuator devices (28,36) as a function of the position or configuration of the manual actuator device (8), • wherein at least the front automatic actuator device (28) is of the electric-hydraulic type and is connected to a first hydraulic delivery circuit (52) of the manual actuator device (8), by means of a first shut-off valve (56) positionable in an operating position, in which it hydraulically disconnects the front automatic actuator device (28) from the manual actuator device (8), and in a safety position in which it hydraulically connects the front electric-hydraulic automatic actuator device (28) with the manual actuator device (8).
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
91.
PROCESS FOR MAKING A CALIPER BODY OF A BRAKE CALIPER
A method for making a caliper body (10, 10') of a brake caliper; wherein the caliper body (10, 10') comprises a couple of opposite side portions (2, 4) defining an intermediate plane (X) therebetween and delimiting a space (6) for housing at least part of the braking surfaces of a disc brake (100), in a straddling arrangement of said body (10) on said brake (100), and at least one connecting portion (8, 32, 34) extending over the housing space (6) to join the side portions (2, 4); comprising the steps of: i) providing half-molds (102, 104, 106) jointly delimiting a mold cavity (108), of a complementary shape to the caliper body (10, 10'), adapted to receive a material in a semi-solid form by means of an access opening (110) arranged so as to end at the connecting portion (8, 32, 34), in the vicinity of the plane (X); ii) by means of an access opening (110), introducing the semi-solid material in the mold cavity (108).
F16D 55/228 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
92.
A DEVICE FOR ADJUSTING THE CLEARANCE OF A DRUM BRAKE
A device for adjusting the clearance of a drum brake (1) capable of avoiding the canceling of the minimum operating clearance also in case of repeated brakes without the wear of the shoes, and arranged between two shoes (2, 3) which cooperate with a braking surface (4) of a drum (5), said shoes (2, 3) are moved by an actuation device (6) which stresses them from a resting position, wherein the shoes (2, 3) are away from said braking surface (4) at least by a minimum operating clearance, to a braking position, wherein the shoes (2, 3) abut against said braking surface (4), wherein said clearance adjustment device (1) comprises an extensible strut assembly (7) arranged between the shoes (2, 3), which creates a reaction action on the shoes (2, 3) when stressed by a braking action applied by the actuation device (6); said extensible strut assembly (7) comprising: a piston (8) rotationally constrained to a first shoe (2); a support (9) rotationally constrained to a second shoe (3) and slidingly connected to said piston (8) making the strut (7) extensible to adjust the distance of said first and second shoe (2, 3); a toothed ring (10) rotational with respect to said piston (8) and abutting against said support (9), by rotating said toothed ring (10) applies an action on said piston (8) and on said support (9) thus extending said strut (7) and moving away said shoes (2, 3); and wherein said clearance adjustment device (1) further comprises: a lever assembly (11) having a first lever end (12) arranged in contact with one of said shoes (3) and biased in rotation by said shoe (3) when said shoe (3) is stressed by said actuation device (6); said lever assembly (11) rotating about a lever pin (12); and wherein said clearance adjustment device (1) further comprises a sliding guide (13) associated with said lever assembly (11) with at least one sliding guiding portion (14) thereof being inserted in the extensible strut assembly (7); said sliding guide (13) slides with respect to said extensible strut assembly (7) during the rotation of said lever assembly (11); said sliding guide (13) comprising a ratchet mechanism (14) which acts on said toothed ring (10) so as to turn said toothed ring (10) when said sliding guide (13) slides with respect to said extensible strut assembly (7) and when it exceeds a predetermined idle stroke (15) thereof of said ratchet mechanism (14) with respect to said toothed ring (10); wherein said coupling of said sliding guide (13) and said extensible strut assembly (7) makes the sliding of said sliding guide (13) possible when the reaction action (Fr), equal and contrary to the braking action (Ff), is lower than a predetermined threshold (Fs), thus allowing the ratchet mechanism (14) to run said idle stroke (15) and possibly actuate said toothed ring (10) extending said extensible strut assembly; and wherein said coupling of said sliding guide (13) and said extensible strut assembly (7) prevents the sliding of said sliding guide (13) when the reaction action (Fr), equal and contrary to the braking action (Ff), is higher than the predetermined threshold (Fs), thus allowing the ratchet mechanism (14), before reaching said threshold (Fs), to run said idle stroke, but, once reached said threshold (Fs), preventing the actuation of said toothed ring (10) and preventing the extension of said extensible strut assembly (15).
A method (200) for controlling a force representative of a parking braking of a vehicle, the vehicle comprising at least one first wheel and a system for controlling the parking braking of the vehicle, the system comprising: a first brake disc operatively associated with said at least one first wheel; a first brake caliper operatively associated with said at least one first brake disc, the first brake caliper being configured to apply a force representative of a parking braking on said first brake disc, the first brake caliper being adapted to receive a hydraulic pressure which can be applied by a first hydraulic actuator that can be operated to apply a first force contribution representative of a service braking of the vehicle on said first brake disc, the first brake caliper comprising a second electromechanical actuator, which can be operated to apply a second force contribution representative of a parking braking of the vehicle on said first brake disc; a data processing unit operatively connected to the first brake caliper. The method (200) comprising the steps of: determining (201), by the data processing unit, a target value of a force representative of a parking braking of the vehicle to be applied, by the first brake caliper, on the first brake disc on the basis of a value of the gradient of the road on which the vehicle is located; determining (203), by the data processing unit, a value of the first force contribution representative of a service braking of the vehicle applied by the first hydraulic actuator on the first brake disc; determining (204), by the data processing unit, a value of the second force contribution representative of the parking braking of the vehicle to be applied, by the second electromechanical actuator, on the first brake disc on the basis of the target value of a force representative of a parking braking of the vehicle which can be applied by the first brake caliper on the first brake disc, and of the determined value of the first force contribution representative of a service braking of the vehicle; operating (205), by the data processing unit, the second electromechanical actuator to apply the determined value of the second force contribution representative of the parking braking of the vehicle on the first brake disc.
B60T 8/17 - Using electrical or electronic regulation means to control braking
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60T 13/66 - Electrical control in fluid-pressure brake systems
A lever device (1) for hydraulically actuating the brake or clutch of a vehicle equipped with a handlebar, comprising: a pump assembly (2) with a pump body (3), connection means (47) to the handlebar, said pump body (3) delimiting a cavity (5), a piston (6); and wherein said lever device (1) further comprises: a control lever assembly (4), rotatably associated with said pump body (3) so as to rotate about a pivot axis (Y-Y), said control lever assembly (4) comprising at least one control level (7); and wherein said piston (6) comprises a piston bottom (10) which defines, with cylinder walls (9) of the pump body (3), a chamber (11) for housing the actuation fluid of the brake or clutch of the vehicle, said piston (6) defining a stroke free play (100) between said end position and said first operating position; and wherein said lever device (1) comprises, between said control lever assembly (4) and said pump body (3), a stroke free play adjustment device (13) which is adapted to adjust the distance along the direction of thrust (X-X) between said end position and said first operating position.
Electronic system (100) for controlling traction and braking of a vehicle (200), the vehicle (200) comprising at least one first wheel (R1), a first brake disc (DB1) operatively associated with said at least one first wheel (R1) and a first brake caliper (PZ1) able to be actuated to exert a dissipative braking torque on said first brake disc (DB), said at least one first wheel (R1) having a respective rotation axis (AR1), the system (100) comprising: at least one first traction and braking control unit (101); a device (102) for actuating braking operatively connected to said at least one first wheel (R1) of the vehicle (200), said device (102) for actuating braking also being operatively connected to said at least one first traction and braking control unit (101). The device (102) comprises: at least one first electric actuator (103) of the first brake caliper (PZ1 ), said at least first traction and braking control unit (101) being configured to control said at least one first electric actuator (103) to exert a dissipative braking torque on the first brake disc (DB1), through the first brake caliper (PZ1); at least one electric motor (104), having a respective rotation axis, operatively connected to said at least one first wheel (R1), the rotation axis of said at least one electric motor (104) coinciding with the rotation axis of said at least one first wheel (R1), said at least one first traction and braking control unit (101) being configured to control said at least one electric motor (104) in regeneration mode to exert a regenerative braking torque on said at least one first wheel (R1), said at least one first traction and braking control unit (101) being configured to control said at least one electric motor (104) in traction mode to exert a traction torque on said at least one first wheel (R1).
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or driveBrake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
A brake actuation assembly (1) comprising:- a thrust and support element (2) comprising a first thrust end (3) adapted to cooperate with a first jaw (4) of a brake (5); a second thrust and support element end (6); - a lever (7), rotatably supported to said thrust and support element (2), comprising a first lever end (8) adapted to cooperate with a second jaw (9) of the brake (5); said lever (7) comprising a second lever end (10) comprising a hooking seat (11); and wherein said hooking seat (11) is adapted to firmly receive a connecting portion (12) of a coupling end (13) of a traction cable (14) - said hooking seat (11) being arranged undercut with respect to the rectilinear development direction of the cable body (15); - said lever (7) being adapted to oscillate when subjected to the traction action of the traction cable (14), for acting with the first lever end (8) thereof against said second jaw (9) of brake (5); wherein - said lever (7) comprises a lever abutment surface (17) which cooperates with a stop abutment counter-surface (18) provided in said thrust and support element (2) to prevent a free rotation of the lever in the opposite direction to said rotation thrust direction (S);- said thrust and support element (2) and said second lever end (10) delimiting a guide channel (16) allowing the coupling end (13) to rotate about said second lever end (10) and to be coupled to said hooking seat (11).
F16D 51/22 - Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
Braking device (1) comprising a disc (2) having a disc body (3) comprising at least one connection portion (7) having at least one dragging surface (10) suitable for receiving a thrust action directed in circumferential direction (C-C), and at least one abutment surface (11) opposed to said dragging surface (10); wherein said braking device (1) further comprises at least one bush (12) comprising at least one engagement portion (13); said braking device (1) further comprising at least one elastic element (14) interposed between said abutment surface (11) and said engagement portion (13) which is inserted with clearance into a seat (9); and in which said elastic element (14) comprises at least one arm (16) projecting cantilevered into said seat (9) and which comprises an attachment root (19), which comprises at least one contact area (31) of said elastic element (14) with said seat walls (10, 11, 34, 35, 36, 37); and in which said arm (16) comprises at least one working portion (17) which touches said engagement portion (13) of said bush (12) and affects said bush (12) to abut against said dragging surface (10).
