A redundant brake unit for a motor vehicle comprises: an inlet port configured to receive fluid under pressure from an external source; an outlet port connected to a supply passage and configured for fluid connection to a wheel brake; a reservoir port connected to a return passage and configured for fluid connection to a fluid reservoir; a boost valve configured to selectively control fluid communication between the inlet port and the supply passage; and a pressure supply unit including a pump element configured to pump fluid between the return passage and the supply passage. The pump element has an inlet directly connected to the reservoir port with no actuated valves therebetween. A normally-closed valve and a throttle valve are disposed in a series configuration between the supply passage and the return passage, with the throttle valve being operable to control a fluid pressure in the supply passage.
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 8/171 - Detecting parameters used in the regulationMeasuring values used in the regulation
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/94 - 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 a fluid pressure regulator
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
A brake system comprises an electronic stability control (ESC) module defining a first interconnect passage, and a pressure supply unit (PSU) module defining a second interconnect passage in fluid communication with the first interconnect passage. The ESC module includes a first pump configured to transfer brake fluid from the PSU module and to a plurality of wheel brakes, and a prime valve configured to selectively control fluid communication between the first interconnect passage and an inlet of the first pump. The PSU module includes a second pump configured to transfer the brake fluid from a fluid reservoir to the first interconnect passage, and a bypass fluid passage from the fluid reservoir to the ESC module with an inline check valve allowing fluid flow through the bypass fluid passage from the fluid reservoir and to the ESC module while blocking fluid flow in an opposite direction.
B60T 8/50 - 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 means for controlling the rate at which pressure is reapplied to the brake
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
3.
BRAKE-BY-WIRE MODULE INCLUDING PRESSURE BALANCED PSU PISTON WITH WETTED BALL SCREW AND BACKUP PUMP ASSEMBLY
An electro-hydraulic brake system includes a master cylinder (MC) configured to supply fluid into a first MC fluid passageway in response to pressing force on a brake pedal; a pressure supply unit (PSU) assembly having a PSU motor coupled to a ball screw actuator, a PSU housing defining a piston bore having a terminal end opposite the PSU motor, and a PSU piston dividing the piston bore into a first chamber and a second chamber and movable by the ball screw actuator, with each of the first chamber and the second chamber containing a hydraulic fluid; and a backup pump assembly including a pump for supplying the brake fluid to at least one of the wheel brakes. The ball screw actuator includes an actuator nut assembly having a plurality of ball bearings each disposed within the piston bore and submerged in the hydraulic fluid.
An electro-hydraulic brake system comprises a single-circuit master cylinder (MC) fluidly coupled to a first MC fluid passageway and configured to supply fluid into the first MC fluid passageway in response to pressing force on a brake pedal coupled thereto. The electro-hydraulic brake system also comprises a pressure supply unit (PSU) assembly including an electric motor coupled to a ball screw actuator, a PSU housing defining a piston bore having a terminal end opposite the electric motor, and a PSU piston disposed within the piston bore and movable by the ball screw actuator through the piston bore and dividing the piston bore into a first chamber and a second chamber, with each of the first chamber and the second chamber containing a hydraulic fluid. The ball screw actuator includes an actuator nut assembly having a plurality of ball bearings each disposed within the piston bore and submerged in the hydraulic fluid.
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
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 7/04 - Brake-action initiating means for personal initiation foot-actuated
The two-stage valve assembly for a vehicle lift system comprises an outer sleeve extending along an axis between a first end and a second end. A stator is located in the first end and a valve opening is located in the second end. The two-stage valve assembly includes an armature assembly for selectively closing the valve opening and opening the valve opening in a first-stage open position and a second-stage open position. The armature assembly comprises a plunger moveable along the axis that includes a poppet portion having a poppet seal oriented towards the second end. A plunger seat is moveable along the axis and located between the poppet portion and the valve opening. The plunger seat includes a seat seal for sealing against the valve opening. A seat channel extends through the seat seal and the plunger seat and is in fluid communication with the valve opening.
A pressure supply unit for a brake system including a booster body that defines an axially extending cylinder. A piston is slideable within the cylinder. The piston defines a bore that receives a spindle. The spindle is rotationally fixed and axially moveable for providing the axial movement of the piston. A motor is positioned about the spindle and is configured to axially translate the spindle and piston. A ball and socket joint connects the piston and spindle while accommodating pivoting movement of the spindle. The ball and socket joint includes a ball at a front end of the spindle and a socket in the bore of the piston which receives the ball.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating partsElements essential to the use of such members
B60T 17/08 - Brake cylinders other than ultimate actuators
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
H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
F16C 11/06 - Ball-jointsOther joints having more than one degree of angular freedom, i.e. universal joints
G01B 7/30 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapersMeasuring arrangements characterised by the use of electric or magnetic techniques for testing the alignment of axes
G01D 5/24 - 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 electric or magnetic means influencing the magnitude of a current or voltage by varying capacitance
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
F16H 1/06 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with parallel axes
7.
Brake-by-wire system with pressure balanced PSU piston
An electro-hydraulic brake system includes a master cylinder (MC) fluidly coupled to an MC fluid passageway and configured to supply fluid into the MC fluid passageway in response to pressing force on a brake pedal. A pressure supply unit (PSU) includes an electric motor and a PSU piston disposed within a piston bore, the PSU piston is movable through the piston bore by the electric motor and divides the piston bore into a first chamber and a second chamber. A pedal feel emulator (PFE) includes a PFE piston movable through a PFE bore and separating an upper chamber from a lower chamber. Fluid is conveyed from the lower chamber of the PFE to the second chamber of the PSU in response to a compression of the PFE. The MC fluid passageway provides a fluid path from the master cylinder into the upper chamber of the PFE.
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 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 13/62 - Combined or convertible systems both straight and automatic
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 17/02 - Arrangements of pumps or compressors, or control devices therefor
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
8.
Pedal feel emulator assembly and a brake system including the pedal feel emulator assembly
A pedal feel emulator comprises a housing extending along a center axis between a closed end and an opened end and defining a chamber extending therebetween. A first piston is slidably disposed in the chamber. The first piston defines a compartment in fluid communication with the chamber. A second piston is slidably disposed in the compartment. A spring seat extends radially outwardly from the second piston. A first elastic member is located in the chamber extending between the spring seat and the closed end. A second elastic member is located in the compartment and extending between the spring seat and the first piston. A third elastic member is located between the second piston and the first piston. A brake system including the pedal feel emulator is also disclosed herein.
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 8/1755 - 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 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
B60T 8/44 - 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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device
B60T 13/62 - Combined or convertible systems both straight and automatic
9.
Noise mitigating hydraulic control unit assembly for a vehicle braking system
A blow-off metering valve for a hydraulic control unit assembly of a brake system including a valve seat. The valve seat includes a wall that extends about an axis between a first end and a second end. The wall defines a passage that extends axially between the first and second ends for transmitting a fluid through the valve seat. An annular flange extends axially from the second end of the wall toward the first end of the wall and tapers radially inwardly. A blocking member is axially movable toward and away from the annular flange for selectively creating a seal at the passage. A biasing element biases the blocking member toward the annular flange. The annular flange terminates at a distal end that is radially spaced from the wall. The annular flange defines at least one flow channel that extends axially for allowing fluid to bypass the blocking member.
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 17/04 - Arrangement of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
F16K 17/04 - Safety valvesEqualising valves opening on surplus pressure on one sideSafety valvesEqualising valves closing on insufficient pressure on one side spring-loaded
B60T 13/16 - Pressure supply arrangements using pumps directly, i.e. without interposition of accumulators or reservoirs
An electro-hydraulic brake assembly comprises a hydraulic control unit (HCU) body having a top surface and a bottom surface opposite the top surface and defining a master cylinder bore and a pressure supply bore. A fluid reservoir is disposed on the top surface. A primary piston is slidably disposed in the master cylinder bore and configured to supply brake fluid to a wheel brake in response to pressing of a brake pedal. A pressure supply unit includes: a pressure supply piston disposed within the pressure supply bore; a motor located on the bottom surface of the HCU body and having a motor shaft. An actuator mechanism includes a threaded shaft configured to be rotated by the motor shaft, and a nut coupled to the pressure supply piston, together causing the pressure supply piston to translate linearly through the pressure supply bore in response to rotation of the motor shaft.
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 8/17 - Using electrical or electronic regulation means to control braking
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 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 13/62 - Combined or convertible systems both straight and automatic
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 17/00 - Component parts, details, or accessories of brake systems not covered by groups , or , or presenting other characteristic features
11.
Pedal brake electric boost for advanced vehicle platforms
A pedal brake assembly comprises a master cylinder block defining a bore extending along a center axis. At least one brake piston is slidably disposed in the bore. A push rod, having a body portion and an end portion, extends between a first end and a second end. The second end is coupled to a brake pedal. A housing defines a channel for receiving the push rod. An actuator couples to the at least one brake piston. The body portion is slidably disposed in the channel. The end portion is in an abutment relationship with the housing and defines a hole extending from the first end to the body portion. A plunger is slidably disposed in the end portion for engaging the at least one brake piston whereby the push rod and the actuator are independently movable along the center axis.
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 7/04 - Brake-action initiating means for personal initiation foot-actuated
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
A pedal feel emulator includes: a body; a displacement piston provided inside the body, the displacement piston being movable along an axial direction of the body, the displacement piston has a hollow part at lower part, and the hollow part is surrounded by a surrounding wall; a retainer provided fixed inside the body, the retainer being under the displacement piston; a first elastic object provided between the displacement piston and the retainer, the first elastic object being retained by the retainer; and a second elastic object provided inside the hollow part of the displacement piston, an air gap is provided between bottom surface of the second elastic object and top surface of the retainer. A brake-by-wire system including the pedal feel emulator is also disclosed herein.
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
F16F 3/10 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction
A master cylinder includes: a cylinder body; an isolation wall provided inside the cylinder body, arranged between a first chamber and a second chamber to isolate the first chamber and the second chamber, wherein, the isolation wall is integrally formed with the cylinder body; a first piston; a second piston; a first rod provided in connection with the first piston; a second rod provided inside the cylinder body, being in connection with the first piston, wherein, the second rod is supported in the isolation wall; and a cap provided at a first opening of the cylinder body, the first opening is at an end of the second chamber along the axial direction. A brake-by-wire system including the master cylinder is also disclosed herein.
B60T 11/20 - Tandem, side-by-side, or other multiple master-cylinder units
B60T 8/26 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force characterised by producing differential braking between front and rear wheels
B60T 7/04 - Brake-action initiating means for personal initiation foot-actuated
14.
Electro-hydraulic brake system including isolation valves
An electro-hydraulic brake system comprises a master cylinder block in fluid communication with a reservoir tank containing a brake fluid. The master cylinder block defines a bore and primary and secondary openings. A protrusion extends outwardly from a rear surface of the master cylinder block. A pressure supply unit coupled to a front surface of the master cylinder block and in fluid communication with the reservoir tank for supplying the brake fluid from the reservoir tank. A master cylinder electronic control unit couples to the rear surface and in an abutment relationship with the protrusion. At least one isolation valve disposed on the rear surface, spaced apart from the protrusion and received by the master cylinder electronic control unit, for regulating brake fluid flow from the master cylinder block to the wheel brakes.
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 8/36 - 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
An electro-hydraulic control unit for a vehicle brake system includes a hydraulic control unit including an HCU block defining a motor bore containing an electric motor and an eccentric chamber containing a rotating eccentric driven by the electric motor. The HCU block also defines a pump bore containing a piston pump including a piston rod having a generally cylindrical shape with a smooth exterior surface extending substantially its entire length. An end cap is press fit around an end of the piston rod and includes a flange portion extending annularly outwardly for engaging a return spring. A piston guide includes a tubular portion guiding the piston rod and a shoulder for engaging the return spring. A throat of the piston guide holds a gland seal surrounding the piston rod. An outlet valve housing includes a tubular protrusion extending into the throat of the piston guide to hold the gland seal.
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 13/66 - Electrical control in fluid-pressure brake systems
F16K 31/52 - Mechanical actuating means with crank, eccentric, or cam
F04B 1/0439 - Supporting or guiding means for the pistons
F16J 7/00 - Piston-rods, i.e. rods rigidly connected to the piston
An electro-hydraulic brake system includes a master cylinder block in communication with a reservoir tank containing a brake fluid. A protrusion extends from the master cylinder block to a terminal end. The master cylinder block defines a channel extending along a center axis into the protrusion. A pressure supply unit includes a housing defining a chamber and is in communication with the reservoir tank. A displacement piston, slidably disposed in the channel, extends between a primary end located in the chamber and a secondary end located in the channel. An actuator is disposed in the chamber, rotatably coupled to the displacement piston, for axial movement along the center axis. A first anti-rotational member is disposed in the channel, coupled to the terminal end, for engaging the secondary end to prevent rotation and translate rotational movement of the actuator into the axial movement.
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
An electromagnetic valve assembly including a magnetic core defining a channel. A valve seat is received by the channel and defines a compartment. An outflow chamber is defined between the magnetic core and the valve seat. The valve seat defines an orifice that fluidly connects the compartment of the valve seat and the outflow chamber. A tappet is axially moveable to open and close the orifice. The valve seat further defines a check valve orifice fluidly connecting the compartment of the valve seat and the outflow chamber. A ball overlies the check valve orifice. A filter seat is secured to said valve seat. A ball guide is disposed in alignment with the check valve orifice and defines a guide passage that receives the ball for guiding the ball toward and away from said check valve orifice. The guide passage is defined by the valve seat and the filter seat.
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
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
F16K 15/18 - Check valves with actuating mechanismCombined check valves and actuated valves
F16K 27/02 - Construction of housingsUse of materials therefor of lift valves
A controlled brake solenoid valve assembly includes a housing defining a channel. An actuating member including an armature and a plunger slidably disposed in the channel. A head portion extends outwardly from the plunger to a distal end. A drawn seat includes a narrowed portion disposed in the channel and defines a first compartment, a shoulder, and a hole. An elastic member disposed in the channel to bias the actuating member away from the drawn seat to define an opened position. The actuating member includes an actuator for moving the plunger from the opened position to a closed position. The distal end includes a restricting member, disposed in the hole, extending outwardly from the distal end, spaced from the terminal end, for providing annular fluid flow. A restricting block defines a restricting orifice having a variable diameter disposed in the first compartment to provide an orifice fluid flow.
F16K 31/02 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic
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
F16K 1/54 - Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
F16K 31/06 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet
The invention provides for a brake pad apparatus for connecting to a brake assembly of a motor vehicle. The brake pad apparatus includes a backing plate that extends along a first plane and has an inside surface and an outside surface. A liner is connected to the inside surface of the backing plate for contacting the rotor for creating a frictional force against the rotor to slow the motor vehicle. An insulating layer is connected to the outside surface of the backing plate for providing heat and noise insulation during contact of the liner against the rotor. At least one projection extends from the outside surface of the backing plate through the insulating layer, and past the insulating layer for being engaged by a pressing member of the brake assembly for compressing the liner against the rotor of the brake assembly.
A fluid damper assembly including a housing that defines a chamber. A rod extends into the chamber and is axially moveable relative to the housing. A bushing is disposed about the rod and is fixed relative to the housing for guiding the rod during the axial movement of the rod. A piston is connected to the rod and is disposed in axially sliding engagement with the housing in the chamber in a compression stroke and in a rebound stroke in response to relative movement between the rod and the housing. A cushioning device extends from the bushing and biases the piston toward the compression stroke for dampening movement of the piston during the rebound stroke of the piston. The cushioning device and the bushing are integral with one another and of a homogeneous material.
A method of assembling a power brake assembly including a brake booster and a master cylinder defining a chamber disposed between at least one reservoir port and at least one brake line port begins by inserting the master cylinder into the brake booster. The method proceeds by monitoring for a pressure differential between the at least one reservoir port and the at least one brake line port of the master cylinder during the insertion step, and then ceasing insertion of the master cylinder into the brake booster in response to sensing a pressure differential. The method proceeds by withdrawing the master cylinder a distance from within the brake booster; and securing the brake booster to the master cylinder after retracting the master cylinder the distance.
B60T 11/22 - Master control, e.g. master cylinders characterised by being integral with reservoir
B60T 11/16 - Master control, e.g. master cylinders
B60T 13/567 - Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of the casing or by its strengthening or mounting arrangements
A disc brake includes a friction pad, a piston, a thrust nut, a ball and a thrust shaft orderly connected from left to right. An outer surface of the thrust nut is provided with at least one protruded portion, and an inner wall surface of a brake housing is provided with a groove matched with the protruded portion.
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 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
A brake mounting bracket apparatus (20, 120, 220, 320) that includes a rear body (22) and a front body (30). The rear body (22) includes an inboard tie bar (24) and a pair of legs (26) that each extends from a lower portion at the inboard tie bar (24) to a terminal end (28). The front body (30) includes an outboard tie bar (32) and a pair of arms (34) that each extends from the outboard tie bar (32) to a distal end (36). A pair of bridges (48) each extends between one of the legs (26) and one of the arms (34). A pair of webs (50) each extends outwardly from one of the bridges (48) for providing stiffness to the bridges and for damping vibrations in the mounting bracket apparatus (20, 120, 220, 320).
A brake booster assembly and method of operation thereof are provided. The assembly includes a rack (26) moveable along a first axis (A). A sensor (34) is coupled with the rack (26) for sensing force and displacement of the rack (26) and outputting a proportional signal. A clutch subassembly (42) is disposed adjacent and coupled to the rack (26) and includes a drum (44) and a hub (46) in a spaced relationship with the drum (44). A motor (80) is disposed adjacent the rack (26) and coupled to the clutch subassembly (42) for rotating the drum (44). A magnetorheological fluid (90) is disposed between the drum (44) and the hub (46). An electromagnet (94) is disposed about the clutch subassembly (42) for generating an electromagnetic field to affect the viscosity of the magnetorheological fluid (90). A controller (96) is electrically connected to the electromagnet (94) and to the sensor (34) and to the motor (80) for controlling the motor (80) and the electromagnetic field of the electromagnet (94) in response to the signal from the sensor (34).
B60T 13/10 - 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 fluid assistance, drive, or release
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
A brake mounting bracket apparatus that includes a rear body and a front body. The rear body includes an inboard tie bar and a pair of legs that each extend from a lower portion at the inboard tie bar to a terminal end. The front body includes an outboard tie bar and a pair of arms that each extend from the outboard tie bar to a distal end. A pair of bridges each extend between one of the legs and one of the arms. A pair of webs each extend outwardly from one of the bridges for providing stiffness to the bridges and for damping vibrations in the mounting bracket apparatus.
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 55/00 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
A brake booster assembly and method of operation thereof are provided. The assembly includes a rack moveable along a first axis. A sensor is coupled with the rack for sensing force and displacement of the rack and outputting a proportional signal. A clutch subassembly is disposed adjacent and coupled to the rack and includes a drum and a hub in a spaced relationship with the drum. A motor is disposed adjacent the rack and coupled to the clutch subassembly for rotating the drum. A magnetorheological fluid is disposed between the drum and the hub. An electromagnet is disposed about the clutch subassembly for generating an electromagnetic field to affect the viscosity of the magnetorheological fluid. A controller is electrically connected to the electromagnet and to the sensor and to the motor for controlling the motor and the electromagnetic field of the electromagnet in response to the signal from the sensor.
F16D 65/28 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged apart from the brake
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 7/04 - Brake-action initiating means for personal initiation foot-actuated
A knuckle deburring cutter and a method of knuckle for removal of burrs at a lower ball head hole of a knuckle and burrs in the locations where the lower ball head hole, a pinch bolt hole and a pinch bolt slot intersect one another. The knuckle deburring cutter includes a cutter shank in a circular bar shape having a diameter less than that of the lower ball head hole. A deburring cutter head is positioned at an end of the cutter shank with the shape of the deburring cutter head matching that of the pinch bolt hole. A sharp-angle part of lettering is positioned at an end of the deburring cutter head with a width of the sharp-angle of lettering being less than that of the pinch bolt slot. The knuckle deburring cutter and associated method provides benefits, such as low rejection rate, ease of machining, short production rhythm and the like.
The subject disclosure provides a balance valve and a vacuum booster. The balance valve includes a valve seat (11), a connecting cylinder (16) and a conic cylinder (17) orderly connected from left to right, wherein the valve seat (11) is annular, a sealing flange (12) is provided on an outer periphery of the conic cylinder (17), a protruded lip (13) for sealing is provided on an outer periphery of the valve seat (11), and the valve seat (11) is provided therein with a via hole (14) for communicating a left surface of the valve seat (11) with a right surface of the valve seat (11) outside the connecting cylinder (16). The vacuum booster having the balance valve can reduce a difference between the starting force and the restoring force, thereby increasing the restoring force while keeping the starting force of the same level.
The present invention provides a damping device and a method for assembling the damping device. The damping device includes an outer tube and an inner tube disposed concentrically along a center axis defining a chamber, with a diaphragm located between the inner tube and outer tube dividing the chamber. A gas charge seal is secured over the chamber between the outer tube and inner tube. An inner clamp is in a sealing engagement with the inner tube and holds the diaphragm in place. A waist defines a sealing surface adjacent to outer tube. The diaphragm extends from under the inner clamp and through a “U” shaped turn back towards the waist. An upper clamp axially aligns with the waist and holds the diaphragm into the waist of the outer tube, sealing the diaphragm to the outer tube.
F16F 9/092 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid in a chamber with a flexible wall comprising a gas spring with a flexible wall provided between the tubes of a bitubular damper
F16F 9/06 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
F16F 9/08 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid in a chamber with a flexible wall
30.
Hydraulic damper with adjustable rebound valve assembly
A hydraulic damper (1) includes an orifice plate (33) provided with an axial projection (334) and a number of rebound flow passages (332) disposed around the projection (334). A deflectable disc (91) and an elliptical disc (92) is disposed slidably one on top of the other over the axial projection (334) to cover a compression side of the rebound flow passages (332). A cage member (34) is fixed to a piston assembly at the compression side thereof and is provided with at least one passage (341, 343). A compression spring (95) is preloaded between the cage member (34) and the discs (91, 92) to normally close the compression side of the rebound flow passages (332).
F16F 9/34 - Special valve constructionsShape or construction of throttling passages
F16F 9/512 - Means responsive to load action on the damper or fluid pressure in the damper
F16F 9/348 - Throttling passages in the form of annular discs operating in opposite directions
31.
Vibroisolating device with a nonlinear force vs. displacement characteristic and a motor vehicle suspension system comprising such vibroisolating device
A vibroisolating device (1) comprises a substantially elastomeric core (2) configured to be connected with a first displaceable object (3) and provide with an opening (21) configured to be connected with a second displaceable object (4). In order to obtain a nonlinear force vs. displacement characteristic of the device, substantially symmetrical around a certain and adjustable nonzero displacement value, the device (1) comprises at least one Belleville spring (5) disposed on the vibration transmitting path between said first displaceable object (3) and said second displaceable object (4), which is at least partially embedded in the volume of said substantially elastomeric core (2) and surrounds said opening (21). In particular the spring (5) is preloaded while said vibroisolating device (1) is in vibrations equilibrium position. The invention also relates to a motor vehicle suspension, in particular an adjustable active suspension system, comprising such a vibroisolating device.
F16F 9/00 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
B60G 11/38 - Resilient suspensions characterised by arrangement, location, or kind of springs having springs of different kinds including leaf springs and also rubber springs
F16F 1/387 - Springs made of plastics, e.g. rubberSprings made of material having high internal friction with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin comprising means for modifying the rigidity in particular directions
B60G 15/06 - Resilient suspensions characterised by arrangement, location, or type of combined spring and vibration- damper, e.g. telescopic type having mechanical spring and fluid damper
B60G 13/00 - Resilient suspensions characterised by arrangement, location, or type of vibration-dampers
F16F 3/12 - Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of a material having high internal friction, e.g. rubber combined with springs made of steel or other material having low internal friction the steel spring being in contact with the rubber spring, e.g. being embedded in it
The present invention provides a dual-rate brake vacuum booster including a control valve body, a rubber reaction plate and a reaction rod, the rubber reaction plate being clamped between an end face of the control valve body and a base plate of the reaction rod, wherein accommodating spaces for accommodating an expansion deformation of the rubber reaction plate are respectively provided between a periphery of an end portion on one side of the rubber reaction plate and a periphery of the end face of the control valve body, and between a periphery of an end portion on the other side of the rubber reaction plate and the base plate of the reaction rod. The dual-rate brake vacuum booster prolongs the service life of the rubber reaction plate and can realize the dual-rate braking without using an additional element, thereby resulting in easy processing, simple structure and reduced cost.
B60T 13/575 - Vacuum systems indirect, i.e. vacuum booster units characterised by reaction devices using resilient discs or pads
B60T 13/57 - Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
F15B 21/00 - Common features of fluid actuator systemsFluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
B60T 13/573 - Vacuum systems indirect, i.e. vacuum booster units characterised by reaction devices
33.
Master cylinder assembly in brake system and piston stop
The present invention relates to a master cylinder assembly in a brake system and a piston stop. The master cylinder assembly comprises one or more piston assemblies. At least one of the piston assemblies comprises a piston (1), a piston stop (2) and a spring (3), wherein the piston stop (2) snaps into the piston (1), and the spring is retained between the piston (1) and the piston stop (2) and placed outside the piston stop (2). According to the present invention, on a circumferential wall of the piston stop (2) are provided deep slots (4) extending axially and running through the thickness of the circumferential wall, and these deep slots open towards one side of the piston stop where it snaps into the piston (1).
F16B 2/06 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
F16B 5/06 - Joining sheets or plates to one another or to strips or bars parallel to them by means of clamps or clips
B60T 11/16 - Master control, e.g. master cylinders
B60T 11/20 - Tandem, side-by-side, or other multiple master-cylinder units
34.
Hydraulic suspension damper and method of assembling thereof
a) comprising a clamp nut (171, 271) and a shoulder sleeve (172, 272) fixed on the perimeter of the clamp nut. The clamp nut clamps together the components of the valve assembly and the shoulder sleeve preloads the spring with a predetermined force. method of assembling such a damper.
F16F 9/348 - Throttling passages in the form of annular discs operating in opposite directions
F16F 9/32 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium Details
35.
Hydraulic mount apparatus for supporting vibration source
A hydraulic mount apparatus (20) for supporting a vibration source is disclosed. The mount apparatus (20) includes a housing (22) that defines a housing chamber (24) separated by a partition assembly (62) into a pumping chamber (64) and a receiving chamber (66), each containing a magnetorheological fluid (68). A flexible body (48) is partially disposed in the pumping chamber (64) for deforming elastically in response to vibrations caused by an external excitation. A fluid passage (106) extends between the pumping chamber (64) and the receiving chamber (66) for passing the fluid therebetween during low frequency vibrations. A piezostack actuator (118) partially extends into the pumping chamber (64) for moving within the pumping chamber (64) for varying the volume of the pumping chamber (64) to prevent a pressure increase in the pressure chamber to substantially cancel relatively high frequency vibrations.
F16F 13/10 - Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
F16F 13/26 - Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
F16F 13/30 - Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids
A master cylinder assembly of the type comprises a housing (20) disposed along an axis (A) defining a chamber (22) having a cylindrical shape extending horizontally between an open end and a closed end. A first cylinder (42) and a second cylinder (44) are disposed for sliding movement axially along the axis. Each of the cylinders includes a cylindrical wall (48) defining a cylindrical bore (52). A piston (56) is disposed in each of the cylindrical bores. The cylindrical wall of each cylinder includes a cylinder ramp (70) to define a cylinder ramp shoulder (74). Each piston includes a piston ramp (76) to define a piston ramp shoulder (80). The piston ramp shoulder (80) of each piston and the cylinder ramp shoulder (74) of each cylinder radially engage one another in an assembled position to allow the cylinders (42, 44) and the pistons (56) to abut one another during the sliding movement axially along the axis within the chamber of the housing.
B60T 11/20 - Tandem, side-by-side, or other multiple master-cylinder units
F15B 15/02 - Mechanical layout characterised by the means for converting the movement of the fluid-actuated element into movement of the finally-operated member
A magneto-rheological damping assembly including a piston (28) defining a core (38). A pair of spaced electromagnets (46) are disposed about the core (38) and are connected to a controller (48) for selectively generating a magnetic flux. A pair of permanent magnets (52) are disposed about the electromagnets (46) and a pole segment (54;154;56;156) is disposed therebetween. A main gap (74) extends through the piston (28) through which magneto-rheological fluid (26) is conveyed. Flux generated by the magnets controls the viscosity of the fluid in the main gap (74) to control the damping force of the assembly. The controller (48) defines an off operating state for cancelling the flux from the permanent magnets (52) across the main gap (74). The core (38) and the pole segment (54;154;56;156) define a closed auxiliary gap (80) extending axially between the electromagnets (46) and radially between the core (38) and the internal pole segment (56) for preventing leakage of flux across the main gap (74) when the assembly is in the off operating state.
A master cylinder assembly of the type comprises a housing (20) disposed along an axis (A) defining a chamber (22) having a cylindrical shape extending horizontally between an open end and a closed end. A first cylinder (42) and a second cylinder (44) are disposed for sliding movement axially along the axis. Each of the cylinders includes a cylindrical wall (48) defining a cylindrical bore (52). A piston (56) is disposed in each of the cylindrical bores. The cylindrical wall of each cylinder includes a cylinder ramp (70) to define a cylinder ramp shoulder (74). Each piston includes a piston ramp (76) to define a piston ramp shoulder (80). The piston ramp shoulder (80) of each piston and the cylinder ramp shoulder (74) of each cylinder radially engage one another in an assembled position to allow the cylinders (42, 44) and the pistons (56) to abut one another during the sliding movement axially along the axis within the chamber of the housing.
Disclosed is a hydraulic damper assembly, wherein a valve housing (78) having a valve housing bore (88) is disposed in abutting relationship with a bypass insert (68) of a base valve assembly (56) for isolating a bypass passage (70) from a reservoir (36). The valve housing (78) defines a valve housing orifice (128) extending therethrough to define an orifice plane (P). A valve (106) is rotatably disposed within the valve housing bore (88) and defines at least one valve orifice (130) extending therethrough along the plane (P). The valve (106) is rotatable between a closed position and an open position to align the valve orifice (130) and the valve housing orifice (128) whereby a working fluid flows serially through the bypass passage (70) and the valve orifice (130) and the valve housing orifice (128) in the open position. A modulating valve (134) overlays the valve housing orifice (128) for variably and incrementally increasing the fluid flow through the aligned orifices (128, 130) in response to an increase in pressure in the valve housing orifice (128) above a predetermined pressure.
F16F 9/346 - Throttling passages in the form of slots arranged in cylinder walls
F16F 9/10 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid onlySprings, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using a fluid of which the nature is immaterial
F16K 5/10 - Means for additional adjustment of the rate of flow
patents
