A sensor module includes a substrate, a sensor chip mounted on one surface of the substrate to detect a predetermined axial displacement, a bonding wire that electrically couples a first electrode formed on the one surface of the substrate to a second electrode of the sensor chip, and a protective frame provided on the periphery of the one surface of the substrate. The protective frame is apart from the bonding wire.
G01L 1/18 - Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
A lighting device (1) according to an embodiment comprises a light source (4) and a lens (3). The lens (3) is disposed on the output side of the light source (4). An entry surface (3b) through which light from the light source (4) enters the lens (3) has an S-shaped cross section in a plane defined by two axes, one an exit direction of the light and the other a predetermined direction orthogonal to the exit direction.
The present pulse wave sensor includes a strain generating body including a plurality of slits each having an elongated shape and bending in a same direction, and a strain gauge provided on the strain generating body and including a Cr mixed phase film as a resistor. The plurality of slits are varied in a distance from a center of gravity of the strain generating body to one-side ends of the slits and in a distance from the center of gravity of the strain generating body to the other-side ends of the slits. The pulse wave sensor is configured to detect a pulse wave based on a change in a resistance value of the resistor in response to a deformation of the strain generating body.
G01L 9/00 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
G01L 9/16 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elementsTransmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in the magnetic properties of material resulting from the application of stress
Provided is a detection device 1 comprising: a first transmission antenna 31 and a second transmission antenna 32 that transmit radio waves; and a first reception antenna 41 and a second reception antenna 42 that receive reflected waves generated by reflection of radio waves by an object. In plan view of a vehicle 10, a first virtual straight line L1 connecting the first transmission antenna 31 and the second transmission antenna 32 and a second virtual straight line L2 connecting the first reception antenna 41 and the second reception antenna 42 intersect, and the first virtual straight line L1 and/or the second virtual straight line L2 is arranged in a vehicle cabin 100 so as to be inclined at an angle less than 90 degrees with respect to a first direction X of the vehicle cabin 100. The detection device 1 uses the reflected waves to detect an in-vehicle living body H to be detected.
G01S 13/56 - Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H01F 7/20 - ElectromagnetsActuators including electromagnets without armatures
An actuator module (21) to be used in a lock system (100) comprises: a drive unit (215); a motive power transmission unit (216) that transmits motive power outputted from the drive unit, outputs the motive power as power for unlocking and locking a lock, and has plate-shaped rotating bodies (G21, G3, G4) that rotate about a rotation axis extending in a first direction; and at least one of a housing (211) and a circuit board (212), the housing accommodating at least a portion of the motive power transmission unit and having plate parts (211Sa, 211Sb) extending in a plane orthogonal to the first direction, and the circuit board (212) extending in a plane orthogonal to the first direction. At least two from among the plate-shaped rotating bodies (G21, G3, G4), the plate parts (211Sa, 211Sb) of the housing, and the circuit board (212) are located at the same position in the first direction.
An actuator module (21) for a lock system (100) attached to a door (1000) of a building comprises: a drive unit (215) that receives, from a battery (BT), supply of electric power for driving; a motive power transmission unit (216) that transmits motive power outputted from the drive unit and outputs motive power for releasing/securing a lock; and a controller (213) that determines the residual amount of the battery on the basis of the difference between a non-load-time voltage value, which is the value of an output voltage of the battery in a state where the drive unit is stopped, and a load-time voltage value, which is the value of an output voltage of the battery in a state where the drive unit is driven.
An actuator module (21) for a lock system (100) attached to a building door (1000) comprises: a drive unit (215); a power transmission unit (216) that transmits power output from the drive unit and outputs the power as power for unlocking and locking a lock (1000B, BM), the power transmission unit (216) having a lock interlocking unit (SS, G4, TL) that moves to an unlocking position in order to bring the lock into an unlocked state and moves to a locking position in order to bring the lock into a locked state; an ammeter (AM) that measures a drive current of the drive unit; a position sensor (PM) that detects the position of the lock interlocking unit; a storage unit (219); and a controller (213). The controller records, in the storage unit, an output of the position sensor when a measurement value of the ammeter has become equal to or greater than a threshold value as first information indicating the unlocking position or the locking position.
This information processing method involves causing a computer to execute processing in which the following are stored in a storage unit: a section of a primary shared piece obtained by dividing original information using a secret sharing scheme; and a section of a secondary shared piece obtained by further dividing, using a secret sharing scheme, a remaining section of the primary shared piece which is other than said section of the primary shared piece. The processing further includes: acquiring a remaining secondary shared piece, which is other than the section of the secondary shared piece, from an external storage device that stores the remaining secondary shared piece; and restoring the original information on the basis of the primary shared piece and the secondary shared piece stored in the storage unit and the secondary shared piece acquired from the external storage device.
G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
12.
INFORMATION PROCESSING METHOD, PROGRAM, AND INFORMATION PROCESSING DEVICE
In this information processing method, a computer executes processing for: dividing second original information, which is information obtained by updating original information which has been restored from split pieces divided via a secret splitting scheme, into primary split pieces and secondary split pieces obtained by further dividing some of the primary split pieces; storing some of the primary split pieces and some of the secondary split pieces in a storage unit; storing the remaining secondary split pieces other than those stored in the storage unit in an external storage device; and, when the external storage device is connected, acquiring the secondary split pieces from the external storage device, restoring the second original information on the basis of the primary split pieces and the secondary split pieces stored in the storage unit and the secondary split pieces acquired from the external storage device, and deleting the secondary split pieces stored on the external storage device.
G09C 1/00 - Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
13.
GRIPPING DEVICE AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor, a detector configured to detect a position and a speed of a rotary shaft of the motor, a motor drive unit configured to supply power by which the motor is driven based on a current control value and to detect a magnitude of a current provided to the motor, a grasper configured to grip an object with a first finger and a second finger by changing a distance between the first finger and the second finger in accordance with rotation of the motor, a force detector configured to detect a grip force that enables the object to be gripped by the first finger and the second finger, and a controller configured to control the current control value such that a value of the detected grip force matches a force command value.
To provide a motor easily applied with frame ground in a simple configuration and capable of suppressing deformation of a connection terminal in contact with an external terminal connecting to an external device. A motor of the present application includes a metal member of a tubular shape having an opening portion and an inner peripheral surface forming the opening portion in an axial line x direction, a bracket including a tubular part disposed inside the opening portion, and a terminal provided at the bracket. The terminal includes a first portion connected to an external terminal connecting to an external device, and a second portion in contact with the metal member. The second portion is disposed between the inner peripheral surface of the metal member and an outer peripheral surface of the tubular part of the bracket.
A stator, a circuit board for supplying a current to the stator, a rotor rotating by the current supplied to the stator, a lead wire connecting an external power supply to the circuit board, and a first mold resin covering at least a portion of the stator, at least a portion of the circuit board, and a portion of the lead wire, and a second mold resin covering a predetermined range from the first mold resin of the lead wire led out from the first mold resin are provided. The second mold resin has the hardness lower than the hardness of the first mold resin.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
A motor (1) is provided with a rotor (30) including: a housing (31) having an opening (39); a yoke (32); and a plate (40) covering the opening (39) of the housing (31). The plate (40) includes one or a plurality of protrusions (47, 48) extending in the radial direction. In the rotational axis direction, the yoke (32) is supported by the housing (31). In the rotational axis direction, the protrusions (47, 48) contact the housing (31) and/or the yoke (32).
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 1/30 - Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders
A power generation device (10) is provided with: a bracket (33); a crankshaft (4) accommodated in the bracket (33); one or a plurality of bearings (32) for rotatably supporting the crankshaft (4) with respect to the bracket (33); and a stator (34) supported by the bracket (33). A magnet (311) is fixed to the side surface of the crankshaft (4).
H02K 21/22 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
H02K 21/14 - Synchronous motors having permanent magnetsSynchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
A vibration actuator according to the present invention includes: an electromagnet formed by laminating a flat annular coil on a plate surface of a plate-shaped magnetic core; a magnetic member having a lower surface facing the coil from above; a spacer disposed on the lower surface at the outside of the coil and separating the magnetic member and the electromagnet in a vertical direction; and an elastic support part disposed outside the coil and connecting the magnetic core and the spacer. As a result of a magnetic force being generated by energization of the coil, one of the magnetic member and the electromagnet is displaced so as to approach the other to vibrate.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/0354 - Pointing devices displaced or positioned by the userAccessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
A vibration actuator includes: a movable part that includes a coil, a core including both end portions protruding from the coil, and a weight fixed to the core, where the coil is wound around the core; a base part made of a magnetic body and includes yokes respectively facing the both end portions; at least one elastic part that supports the movable part in an elastically vibratable manner with respect to the base part; and a cover that accommodates the movable part and the at least one elastic part between the cover and the base part and forms a housing together with the base part. In the vibration actuator, a magnetic attraction force generated by energization of the coil displaces the movable part toward the base part to vibrate the movable part.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 5/24 - CasingsEnclosuresSupports specially adapted for suppression or reduction of noise or vibrations
H02K 11/33 - Drive circuits, e.g. power electronics
20.
GRIPPING DEVICE AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor configured to rotate in accordance with an operational value, a grasper including a first finger and a second finger, a force detector configured to detect a grip force that enables an object to be gripped by the first finger and the second finger upon occurrence of a condition in which the object is gripped by the first finger and the second finger, and a controller that controls the operational value such that a magnitude of the grip force detected by the force detector matches a command value. The controller controls the grasper based on the command value as a reference command value. The controller changes the command value as the reference command value to an updated command value based on a change in the grip force that the force detector detects after the grasper grips the object.
A door latch device (5) comprises: a latch mechanism (21) that includes a claw (21b) that is movable between an engagement position in which a state of engagement between a fork (21a) and a striker (3) is maintained, and an open position in which such engagement is released; an electric motor (22) that moves the claw (21b) to the open position; an open switch (91) that outputs an open signal indicating a user's intention to open a door; a key cylinder (31) that is rotationally operated by an inserted key (99); a lock switch (34) that outputs a lock signal in response to the rotational operation of the key cylinder (31) toward one side; and a control unit (40) that includes an electronic unlock state in which the electric motor (22) is caused to operate in response to reception of the open signal, and an electronic lock state in which the electric motor (22) is not caused to operate despite the reception of the open signal and the claw (21b) is maintained at the engagement position, and that switches the electronic unlock state to the electronic lock state in response to reception of the lock signal.
E05B 47/00 - Operating or controlling locks or other fastening devices by electric or magnetic means
E05B 77/44 - Burglar prevention, e.g. protecting against opening by unauthorised tools
E05B 81/14 - Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt
22.
VIBRATION ACTUATOR AND VIBRATION PRESENTATION DEVICE
This vibration presentation device includes: a fixed part having a magnetic force generation portion in which a plate-shaped magnetic core is inserted into a coil to make both ends of the magnetic core protrude from the coil, and a base portion to which the magnetic force generation portion is fixed in a state in which both ends overlap with the upper surface; a movable part having a plate-shaped magnetic member opposing both ends from above in a surface orthogonal direction that is orthogonal to the upper surface, and a weight portion arranged on a lower surface of the magnetic member at a position avoiding the magnetic force generation portion; and an elastic body which is a frame-shaped body having a first opposing side and a second opposing side surrounding the movable part, connected to the movable part by a pair of first connection parts of the first opposing side, and connected to the fixed part by a pair of second connection parts of the second opposing side. The movable part is displaced and vibrated so as to be made to approach the fixed part by magnetic force generated by conduction to the coil.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
23.
CONTROL DEVICE, ELECTRIC-ASSIST BICYCLE, AND ASSIST CONTROL METHOD
Provided is a control device capable of preventing unnecessary assist actions, for example. For example, provided is a control device (1) that assists with rotating pedals (4) if a ratio (R) of the rotational speed (Vb) of wheels (2, 3) and the rotational speed (Vp) of the pedals (4) is within a prescribed range, and stops assisting with rotating the pedals (4) if the ratio (R) is outside of the prescribed range.
This vibration actuator comprises: a magnet; a core having a coil; a plate-shaped upper frame body; a plate-shaped lower frame body; and a plate-shaped elastic part which extends into a frame from an end part disposed at a position overlapping the upper frame body and the lower frame body in a plan view, and which holds either the magnet or the core so as to be able to vibrate in the frame. The end part is sandwiched between the upper frame body and the lower frame body such that the magnet and the core face each other in the frame.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
H02K 33/16 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system
This magnetic encoder comprises an annular magnet having two end surfaces in an axial direction and an outer circumferential surface connected to the two end surfaces. The annular magnet includes magnetic particles, and a resin cured product of a thermosetting resin. The annular magnet includes 70-80 vol% of the magnetic particles and 20-30 vol% of the resin cured product. The magnetic particles have a particle size of 45-75 μm. The annular magnet has a porosity of 5 vol % or less.
G01D 5/245 - 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 characteristics of pulses or pulse trainsMechanical 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 generating pulses or pulse trains using a variable number of pulses in a train
H01F 1/08 - Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
H01F 1/053 - Alloys characterised by their composition containing rare earth metals
This rotor comprises, for example: an annular part (163a); a plurality of magnetic pole pieces (163b, 263b, 363b, 463b); a plurality of connection parts (163c, 163d, 263c, 263d); and first magnets (161, 261, 361, 461) that are respectively disposed between two of the adjacent magnetic pole pieces (163b, 263b, 363b, 463b) in the circumferential direction. The first magnets (161, 261, 361, 461) have engaging sections (161e, 261e, 361e, 461ae, 461be). Engagement sections (163e, 263e, 363e, 464ae, 464be) are provided to the magnetic pole pieces (163b, 363b), the connection parts (263c, 263d), or a member (464) that is in contact with the first magnet (461) in the rotational axis direction.
A pump 1 has a vibration actuator 3 and pump units 4A, 4B. The vibration actuator 3 has: a base 51; a movable part 7 that has plate springs 72, 73 extending in the X-axis direction with one end connected to the base 51, a movable body 71 connected to the other end of the plate springs 72, 73, and a magnet 77 provided on the movable body 71; and a coil core part 8 that is provided on the base 51 and disposed facing the magnet 77 in the X-axis direction. The movable body 7 is displaced in the Y-axis direction while elastically deforming the plate springs 72, 73 due to an electromagnetic action between the magnet 77 and the coil core part 8. The pump units 4A, 4B have an airtight chamber 44, and a movable wall 45 that changes the volume of the airtight chamber 44 due to drive of the vibration actuator 3.
H02K 33/04 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation
In the present invention, a rotating device (1) comprises a housing (B2), a motor (A3), a sensor (H7), a plate (F40), an external connection terminal (4), and another member (800). The housing (B2) has a first housing (B21) and a second housing (B22) that can be separated. The sensor (H7) has a terminal (H8). The plate (F40) is fixed to the housing (B2). The external connection terminal (4) is fixed to the plate (F40). The other member (800) electrically connects the terminal (H8) of the sensor (H7) and the external connection terminal (4). A portion of the external connection terminal (4) protruding from the plate (F40) and a terminal (H8) of the sensor (H7) face each other in the direction from the first housing (B21) toward the second housing (B22).
H02K 11/21 - Devices for sensing speed or position, or actuated thereby
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
H02K 11/38 - Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
H02K 13/00 - Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windingsDisposition of current collectors in motors or generatorsArrangements for improving commutation
29.
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
The rotation speed of a motor is made to more reliably approach a target rotation speed. A motor drive control device includes: a drive circuit configured to apply an AC voltage converted by switching a DC voltage (VDD) to a coil of a motor based on a drive control signal (Sd) for controlling drive of the motor; and a control circuit configured to perform PWM control for generating a PWM signal as the drive control signal (Sd) in a manner that a rotation speed (Sr) of the motor matches a target rotation speed (Stg) and a sinusoidal current flows through the coil. The control circuit generates the PWM signal by increasing a modulation degree indicating a ratio of a command value of the AC voltage relative to the DC voltage (VDD) when the rotation speed (Sr) has not reached the target rotation speed (Stg).
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
This vibration actuator includes: a housing; a first movable part that has a magnet part and is disposed in such a manner as to be capable of reciprocating in a vibration direction that is along the axial direction, such reciprocation being within the housing and via a first elastic support part joined to both ends of the magnet part, the ends being separated in the axial direction of the magnet part; and a second movable part that has a coil part disposed to surround the magnet part, and that is disposed so as to be capable of reciprocating along the vibration direction at the outer periphery of the first movable part such reciprocation being within the housing and via a second elastic support part joined to both ends of the coil part, the ends being separated in the axial direction of the coil part.
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
A planar illumination device (1) according to an embodiment comprises a substrate (3), a reflector (5), and a condenser lens (6). A plurality of light sources (4) are two-dimensionally arranged on the substrate (3). The reflector (5) is disposed on the substrate (3) and has an inclined reflective surface (5a) that surrounds the emission side of each of the light sources (4). The condenser lens (6) is disposed on the emission side of the light sources (4) and the reflector (5), and condenses emitted light from the light sources (4). The full width at half maximum of the emitted light from the light source (4) is set to a value such that, at least in a predetermined direction, the emitted light within the full width at half maximum does not directly hit the reflector (5).
Provided is a durable torque sensor. A torque sensor (100, 200, 300, 400, 500, 600) comprises: a member (S) that is displaced in the axial direction; a strain-generating body (101, 201, 301, 401, 501, 601); and a housing (104) that accommodates the member (S) and the strain-generating body (101, 201, 301, 401, 501, 601). The strain-generating body (101, 201, 301, 401, 501, 601) is provided with a protrusion (111, 211, 311, 411) that protrudes in the axial direction. The protrusion (111, 211, 311, 411) faces an inner circumferential surface (104 ci) of the housing (104, 501, 601) in the radial direction.
G01L 3/10 - Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
33.
MOTOR DRIVE CONTROL DEVICE AND MOTOR DRIVE CONTROL METHOD
To provide a motor drive control device and a motor drive control method capable of achieving high motor drive efficiency and suppressing the occurrence of vibration. A motor drive control device includes a control circuit unit configured to output a drive control signal (Sd) for PWM-driving a motor, and a motor drive unit configured to drive the motor based on the drive control signal (Sd). The control circuit unit adjusts a PWM frequency of the drive control signal (Sd) such that the PWM frequency is in a predetermined range and the number of PWM pulses per one cycle of an electrical angle of the motor is a desired value in a first rotation speed range of predetermined rotation speed ranges of the motor, and the PWM frequency is in the predetermined range in a rotation speed range other than the first rotation speed range.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
The application improves a design while controlling cost increase. In a vehicle cabin illuminating device, a first and second cabin LEDs are housed in a case. A panel of the case is provided with a cabin illuminator, and a light irradiated from the first and the second cabin LEDs passes through the cabin illuminator to illuminate inside a vehicle cabin. The panel is provided with a decorative illuminator having a decorative translucent portion that can transmit light, and the first lens housed in the case guides light from the first cabin LED to a back side of the decorative illuminator, and the second lens housed in the case guides light from the second cabin LED to the back side of the decorative illuminator. Thus, the decorative illuminator can be illuminated using the first and second cabin LEDs for illuminating inside the vehicle cabin, thereby decorating the vehicle cabin illuminating device.
B60Q 3/66 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by optical aspects using light guides for distributing light among several lighting devices
B60Q 3/70 - Arrangement of lighting devices for vehicle interiorsLighting devices specially adapted for vehicle interiors characterised by the purpose
A door latch device (1) is provided with a device body (2) having a latch mechanism (11), an electric motor (12), a main frame (10), and an open lever (16). The open lever (16) is mechanically connected to the latch mechanism (11), and is capable of operating the latch mechanism (11) with a displacement of the open lever (16). A first operation force input mechanism (20A) or a second operation force input mechanism (20B) is selectively attached to the device body (2), in order to transmit an operation force, which is input by the user of a vehicle, to the open lever (16). The main frame (10) has both frame fixing parts (10a, 10b) for fixing a sub-frame (30) of the first operation force input mechanism (20A), and a through-hole (10c) for passing a cable (41) of the second operation force input mechanism (20B).
Provided is a motor capable of suppressing temperature rise in a bearing. The motor (1) comprises: a rotor (40) having a cylinder (12), a shaft (20), an annular space (CR) formed between the inner peripheral surface (13if) of the cylinder (12) and the outer peripheral surface (20op) of the shaft (20), a first bearing (21), a second bearing (22), a stator (30) fixed to the cylinder (12), an inner peripheral section (42a) fixed to the shaft (20) and equipped with a protrusion (42ap) facing the second bearing (22), an outer peripheral section (43) surrounding the stator (30), and a magnet (44) fixed to the outer peripheral section (43); and a substrate (15) fixed to a part of the cylinder (12) between the stator (30) and the first bearing (21) in the longitudinal direction of the shaft (20). The motor (1) additionally comprises a flow path (FP) in which a fluid flows between an inner ring (21in) of the first bearing (21) and a rolling element (21re), between the annular space (CR), an inner ring (22in) of the second bearing (22), and a rolling element (22re), and between the surface (42apf) of the protrusion (42ap) and the second bearing (22) in this order, then flows out to the exterior.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
H02K 11/30 - Structural association with control circuits or drive circuits
A vibration actuator according to the present invention comprises a plate that is a magnetic body, an electromagnet that is provided on the plate and is formed by providing a coil to a center part of a core, and an elastic body that supports the core on both sides of the coil and is connected to the plate. Magnetic force generated by energization of the coil causes one of the coil or the plate to be displaced toward the other and vibrate.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
The planar illumination device includes a substrate including a plurality of light sources provided at one surface side, and a reflector disposed at the one surface side of the substrate and including a plurality of segments corresponding to the plurality of light sources, respectively, each of the segments being formed with a reflection surface surrounding each of the light sources. In an outer peripheral part segment disposed at an outer peripheral part of the reflector out of the plurality of segments, the reflection surface at an outer side and the reflection surface at an inner side are asymmetric.
An angle sensor (1) comprises: a rotor (2) having a plurality of protrusions (11) extending in the radial direction; a base (3); and a coated conductor wire (4). The conductor wire (4) is provided on a structural surface (3a) of the base (3) and forms a planar shape having a plurality of undulations in the radial direction. The protrusions (11) face the conductive wire (4) in the axial (x) direction.
G01D 5/20 - 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 inductance, e.g. by a movable armature
H02P 6/16 - Circuit arrangements for detecting position
Provided is a vibration actuator including: a movable body having a disk-like magnet, a pair of weight parts that are magnetic bodies fixed to both surfaces of the magnet in an axial direction, and a pair of spring connection parts that are provided at both ends in the axial direction; and a fixed body that has a case, and a cylindrical body that has an annular coil arranged on the outer periphery thereof and accommodates the movable body so as to be capable of reciprocating in the axial direction by a pair of elastic support parts that are separated in the axial direction and are respectively connected to the pair of spring connection parts. The case has a pair of bottomed cylindrical cases each having a case lid part at one end and a case opening part at the other end. The pair of bottomed cylindrical cases are respectively made to cover the cylindrical body from both sides in the axial direction, and the case opening parts of the pair of bottomed cylindrical cases are joined to each other to accommodate the cylindrical body. The pair of bottomed cylindrical cases are common members having the same shape.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, a plate displaceable with respect to the base, an elastic member supporting the plate with respect to the base. The base, the plate and the elastic member are arranged inside the housing. A magnetic gap is formed with the plate and the base. The plate connects with the contact member.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
43.
VIBRATION ACTUATOR AND VIBRATION PRESENTATION DEVICE
This vibration actuator comprises: a plate-shaped magnetic body; a plate-shaped electromagnet which is disposed so as to face the plate-shaped magnetic body and in which a coil is disposed at the center of a core; an elastic body that is a frame-shaped elastic body surrounding the plate-shaped magnetic body, supports the plate-shaped electromagnet on both sides of the coil, and is connected to the plate-shaped magnetic body; and a housing cover that covers the elastic body in the vibration direction and accommodates the elastic body together with the electromagnet. One among the electromagnet and the plate-shaped magnetic body is displaced by the magnetic force generated by the energization of the coil so as to approach the other inside the cover, and vibrates.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
44.
GRIPPING DEVICE, GRIPPING SYSTEM, AND CONTROL METHOD BY GRIPPING DEVICE
A gripping device includes a motor configured to rotate according to an operation value; a grasper including a first finger and a second finger, the grasper being configured to change a distance between the first finger and the second finger by using the motor, and to grip an object with the first finger and the second finger; a force detector configured to detect a gripping force by which the object is gripped with the first finger and the second finger, upon occurrence of a condition in which the object is gripped with the first finger and the second finger; and a controller configured to output the operation value such that a force detection value of the gripping force detected by the force detector matches a force command value. The controller is configured to detect a deviation of the object from a predetermined reference position based on a time period from a start of a gripping operation from a timing at which any one of the first finger and the second finger contacts the object.
A strain gauge according to the present disclosure includes: a resin substrate; a resistor formed of a film containing Cr, CrN, and Cr2N on one side of the substrate; and an inorganic insulating layer formed on another side of the substrate, and, in this strain gauge, the inorganic insulating layer is formed at least at a position overlapping a region where the resistor is formed in plan view.
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
G01B 7/16 - Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
46.
MOTOR DRIVE CONTROL DEVICE AND INITIAL POSITION DETECTION METHOD FOR A ROTER
A control circuit that generates a drive control signal, an inverter circuit including a switch provided corresponding to the coil of each-phase of the motor, a driving circuit that rotates the rotor of the motor by alternately turning on/off the switch in accordance with the drive control signal, a shunt resistance provided between the inverter circuit and a ground, and a bidirectional current detection circuit that detects the current flowing through the shunt resistance in both directions are provided. The control circuit performs energization and interruption in the energization direction of the coil by sequentially switching the energization sectors without rotating the rotor of the motor, and estimates the position of the rotor based on the peak value of the energization current and the peak value of the kickback current due to the inductive kickback for each energization sector.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
Provided is a rotary machine capable of stably bringing a GND member attached to an end cap into contact with a housing. This rotary machine comprises: a motor; a housing 131 provided with a cylindrical part for accommodating the motor, the housing being composed of an electroconductive material; an end cap 160 arranged facing the inner peripheral surface of the cylindrical part; a circuit board 144 forming a GND circuit; and a terminal 200. A pin part 222 of the terminal 200 extends to one end side in the axial direction and is connected to the GND circuit. A second side plate part 230 of the terminal 200 extends to the other end side in the axial direction and is supported by an inner annular part 162 of the end cap 160. A contact piece 233 of the terminal 200 is arranged between the inner peripheral surface of the housing 131 and the inner annular part 162, thereby coming into contact with the housing 131.
A motor as an example of the present disclosure includes a shaft, a bearing, and a holding member configured to hold the bearing, the holding member includes a protruding part protruding toward the shaft, the bearing and the protruding part are away from each other in the axial direction, and the protruding part and the shaft are away from each other in the radial direction.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
F16C 19/08 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with two or more rows of balls
Provided is an axial flow fan capable of achieving an improvement in P-Q characteristics. This axial flow fan (100) comprises: a casing (10) in which a flow path (130) communicating an intake port (11) and an exhaust port (12) is formed; and an impeller (20) that is disposed inside the casing (10), comprises a hub part (21) and a plurality of moving blades (30), and can rotate around an axis, wherein the plurality of moving blades each have a front edge part (33) and a rear edge part (34), the rear edge part (34) includes a first portion (37) disposed on the inner peripheral side and a second portion (38) disposed on the outer peripheral side, the second portion (38) includes an inclined surface inclined at a different angle than the first portion (37), and the inclined surface of the second portion (38) is inclined so that the blade thickness of the second portion (38) is smaller than the blade thickness of the first portion (37).
The invention relates to a fluid dynamic bearing system, comprising a bearing bush and a shaft rotatably supported in the bearing bush, wherein an annular pressure plate is arranged at the shaft and wherein a bearing gap is formed which is filled with a bearing fluid, and wherein two fluid dynamic radial bearings are formed between the shaft and the bearing bush, and wherein at least one fluid dynamic axial bearing is formed between an end face of the pressure plate and an end face of a cover plate, wherein the fluid dynamic axial bearing has groove structures provided on the pressure plate or the cover plate wherein, in the connection or junction region between the shaft and the pressure plate, at least one axially extending recess or hole is present, wherein the opening of the recess or hole of the pressure plate and the groove structure of the axial bearing do not overlap in the radial direction.
The present invention provides a pulse wave measurement device that enables a pulse wave sensor to be appropriately placed with respect to a radial artery regardless of the length of the circumference of a wrist. A pulse wave measurement device (100) comprises: a first arm (10) and a second arm (20) that are capable of swinging relative to each other around a first axis which extends in a first direction along the longitudinal direction of a radial artery (110); a pulse wave sensor (31) that is mounted in a distal end portion of the first arm (10); and a movable part (40) that is connected to the second arm and that is movable in a direction approaching or separating from the pulse wave sensor.
[Problem] To provide an angle sensor capable of suppressing the influence of movement in an axial direction of a rotary shaft. [Solution] An angle sensor 1 comprises a rotor 2 and a stator 3. The rotor 2 includes a cylinder 10 and a plurality of metal bodies 20 fixed to the cylinder 10. The stator 3 includes a plurality of protruding portions 30 that protrude toward the rotor 2, and a plurality of coils 40 that surround the plurality of protruding portions 30. The plurality of metal bodies 20 are located inside the cylinder 10.
G01D 5/20 - 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 inductance, e.g. by a movable armature
[Problem] To provide a rotary device capable of suppressing the effect of movement of a rotary shaft in the axial direction on the detected rotation angle. [Solution] A rotary device 1 comprises an angle sensor 2, a rotary shaft 3, a motor 4, and a conductor 5. The angle sensor 2 is provided with a rotor 6 having a plurality of metal bodies 10 and a stator 7 having a plurality of coils 20. The rotary shaft 3 is fixed to the rotor 6 of the angle sensor 2. The motor 4 has a frame 30 and a cover 40 that covers an opening 31 in the frame 30. The angle sensor 2 is fixed to the cover 40.
G01D 5/20 - 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 inductance, e.g. by a movable armature
G01D 5/245 - 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 characteristics of pulses or pulse trainsMechanical 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 generating pulses or pulse trains using a variable number of pulses in a train
54.
ANOMALY DETECTOR, MOTOR SYSTEM, AND METHOD FOR DETECTING ANOMALY
An anomaly detector for detecting an anomaly of a motor includes circuitry configured to acquire a characteristic value related to the motor and process the characteristic value. The circuitry is configured to acquire the characteristic value related to the motor as inspection data, update a statistic of the inspection data, update an amplitude from an updated statistic, update an exponential moving average value of the inspection data, update an anomaly level based on the inspection data, the amplitude, the statistic, and the exponential moving average value, and detect the anomaly of the motor based on the anomaly level.
[Problem] To provide an angle sensor capable of suppressing the influence of movement in an axial direction of a rotary shaft. [Solution] An angle sensor 1 comprises a rotor 2, a stator 3, and a frame 4. The rotor 2 has a cylinder 10 and a plurality of metal bodies 5 fixed to the cylinder 10. The frame 4 is fixed to the stator 3. The stator 3 comprises: a cylinder 30 having an inner peripheral surface 31 as an inner surface on the rotor 2 side, and an outer peripheral surface 32 as an outer surface on the frame 4 side; and a plurality of coils 20 attached to the outer peripheral surface 32 of the cylinder 30.
G01D 5/20 - 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 inductance, e.g. by a movable armature
[Problem] To provide an angle sensor that is capable of suppressing the effects of movement in the axial direction of a rotation axis. [Solution] Provided is a side view schematically showing the configuration of an angle sensor 1. As shown in Fig. 1-4, the angle sensor 1 comprises a rotor 2 and a stator 3. The rotor 2 has a cylinder 10 and a plurality of metal bodies 20 that are fixed to the cylinder 10. The stator 3 has a plurality of coils 40. The rotor 2 has an outer circumferential surface 12 that faces the stator 3. In the circumferential direction, the plurality of metal bodies 20 are fixed to the outer circumferential surface 12 of the rotor 2.
G01D 5/20 - 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 inductance, e.g. by a movable armature
G01D 5/245 - 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 characteristics of pulses or pulse trainsMechanical 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 generating pulses or pulse trains using a variable number of pulses in a train
57.
MOTOR DRIVE CONTROL DEVICE AND METHOD FOR DETECTING IDLING OF MOTOR
A motor drive control device includes: a control circuit configured to generate a drive control signal; a drive circuit including an inverter circuit including a switch provided corresponding to each phase of coil of the motor, the drive circuit being configured to rotate a rotor of the motor by alternately turning the switch on and off in response to the drive control signal; and a phase voltage detection circuit configured to detect a phase voltage generated between the inverter circuit and each phase of coil of the motor. The control circuit generates an idling control signal and switches a switch state of the inverter circuit to generate a current circulating between each phase of coil of the motor and the inverter circuit when the rotor of the motor is idling, and then determines idling of the motor based on a phase voltage generated at the phase voltage detection circuit by an inductive kickback generated when a path of the current is blocked.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
G01R 25/00 - Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
The purpose of the present invention is to notify the rotation direction of a motor to the outside. In a motor drive control device (1), a control circuit (2) comprises: a drive control signal generation unit (20) that generates a drive control signal (Sd) such that a motor (40) rotates in a first direction or a second direction opposite to the first direction; a rotation direction determination unit (24) that determines the rotation direction of the motor (40); and a rotation state signal generation unit (25) that generates a rotation state signal (So) indicating the rotation state of the motor (40) on the basis of the determination result from the rotation direction determination unit (24), and outputs the rotation state signal (So) from a signal output terminal (P4). When the motor (40) is rotating in the first direction, the rotation state signal generation unit (25) generates a first signal (Ss) having a frequency based on the rotation speed of the motor (40) and a predetermined duty ratio and outputs the first signal as the rotation state signal (So). When the motor (40) is rotating in the second direction, the rotation state signal generation unit (25) generates a second signal (Sa) in which at least one of the duty ratio and the frequency is different from the first signal (Ss), and outputs the second signal as the rotation state signal (So).
This vibration actuator comprises: a fixed part that has a thickness in the up-down direction, is fixed to a base, and includes a magnet; and a movable part that is disposed around the fixed part, is supported by a spring so as to be capable of vibrating in the up-down direction, includes a coil, and vibrates in the up-down direction by means of a driving force generated by an interaction that occurs between the magnet and the energized coil. The spring has a frustum shape. An outside portion of the spring is connected to the outer peripheral portion of the movable part. An inside portion of the spring is connected to the base. The inside portion has an opening into which an end portion of the fixed part in the up-down direction is inserted.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
This vibration actuator comprises: a core; a coil disposed around the core; and a substrate disposed on the core and integrally provided with a wiring part connected to the coil and an insulating part that is disposed inside the coil and insulates the coil and the core.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
A distance estimation device estimates a distance between an image acquiring unit and a marker in a first axis direction, based on coordinates of an upper end portion of the marker; coordinates of a lower end portion of the marker; and a length between the upper end portion and the lower end portion. The distance estimation device estimates a distance between the image acquiring unit and the marker in a third axis direction, based on a first elevation angle of a projected position and the distance in the first axis direction.
G01B 11/00 - Measuring arrangements characterised by the use of optical techniques
G01B 11/14 - Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
62.
BEARING DEVICE, METHOD FOR MANUFACTURING BEARING DEVICE, HARD DISK DRIVE DEVICE, AND MOTOR
[Problem] To provide a bearing device capable of easily imparting preload and securing mass producibility. [Solution] This bearing device is provided with: a cylindrical sleeve 110; a shaft 150 held inside the sleeve 110; a first ball bearing 120 and a second ball bearing 130 for holding the shaft 150 in a rotatable state with respect to the sleeve 110; and an inner peripheral projection part 111 formed on an inner periphery of the sleeve 110. Outer rings 122, 132 of the first and second ball bearings 120, 130 are in contact with end faces of the inner peripheral projection part 111. A predetermined gap is provided between outer peripheries of the outer rings 122, 132 of the first and second ball bearings 120, 130 and the inner periphery of the sleeve 110. A predetermined gap is provided between inner peripheries of inner rings 121, 131 of the first and second ball bearings 120, 130 and an outer periphery of the shaft 150. A delayed ultraviolet curable epoxy-based adhesive is provided in the gaps.
F16C 35/07 - Fixing them on the shaft or housing with interposition of an element
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
[Problem] To provide: a rolling bearing in which a grease composition containing molybdenum dithiocarbamate and triphenylphosphorothioate is sealed, said rolling bearing allowing friction qualities to be improved and acoustic-noise quality deterioration to be kept under control; and a motor with the bearing built-in. [Solution] Provided are a rolling bearing of 22 mm or less outer diameter and a motor comprising with the rolling bearing. The rolling bearing includes: an inner ring; an outer ring disposed coaxially with the inner ring along the outer periphery of the inner ring; a plurality of rolling elements disposed between the inner ring and the outer ring; a cage that retains the rolling elements; and a grease composition retained between the inner ring and the outer ring. The grease composition contains a base oil, a thickener, molybdenum dithiocarbamate containing an alkyl group with eight or more carbon atoms, and triphenylphosphorothioate. In a state in which a preload along the axial direction has been placed on the outer ring such that the average contact pressure on the inner ring will be 800 MPa, the roller bearing has a medium-band Anderon value of 1.2 or less after the inner ring has been rotated at a rotational speed of 1800 rpm for 30 seconds at room temperature under an atmospheric environment.
C10M 141/10 - Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups , each of these compounds being essential at least one of them being an organic phosphorus-containing compound
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
C10M 135/18 - Thio-acidsThiocyanatesDerivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
C10M 137/14 - Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond containing sulfur
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
To measure a current of a coil of a motor with high accuracy. A motor drive control device includes a control circuit configured to generate a drive control signal based on a measurement value of a current flowing through a coil of a motor, and a drive circuit configured to drive the coil based on the drive control signal. The drive circuit includes a switch and a switch connected in series, a switch and a switch connected in series, a current detection element connected in series to the switch and the switch, and a current detection element connected in series to the switch and the switch. The coil is connected between a node with the switch and the switch connected in common, and a node with the switch and the switch connected in common. The control circuit measures the current based on a mean value of a current flowing through the current detection element and a current flowing through the current detection element.
This pulse wave measurement device comprises: a sensor unit that includes a pulse wave sensor; and an attachment unit that is connected to the outside of the sensor unit and can be attached to a subject. The attachment unit has a first curved member and a second curved member that are curved in opposite directions so as to be attached to the wrist of the subject, face each other, and are capable of transitioning between a closed state and an opened state. The sensor unit is disposed on one end side in the longitudinal direction of the first curved member. The second curved member has a region in which the width in the transverse direction is narrower than the width in the transverse direction of the first curved member. The second curved member has a shape asymmetric with respect to an imaginary line that divides, in the transverse direction, a part having a largest width and extends in the longitudinal direction.
A rotating electric machine (1) comprises a motor (2), a substrate (50), a terminal block (5), and a heat sink (40). The terminal block (5) comprises a terminal (80) and fixes the substrate (50). The heat sink (40) houses the motor (2), the substrate (50), and the terminal block (5). The heat sink (40) has an opening (41), and a portion (60) of the terminal block (5) is inserted into the opening (41). The opening (41) has an inner surface (42) that faces the portion (60) of the terminal block (5). The terminal block (5) has a cylindrical portion (60) which has an outer surface (62) facing the inner surface (42). An elastic member (6) is disposed between the inner surface (42) and the outer surface (62).
A motor includes a stator core including a stacked body of electromagnetic steel plates, a surface of the stacked body is covered with a coating film, and the coating film is an epoxy resin-containing electrodeposition coating film subjected to overbaking.
A permanent magnet manufacturing method includes at least a magnetization target forming step of molding a magnetization target by applying a predetermined pressure to a magnet powder and a thermosetting resin, and a heating step of heating the magnet powder to the Curie point or higher while permanent magnets of a field magnet part are brought close to the magnetization target placed on a base member to magnetize the magnet powder and melting and curing the thermosetting resin to allow the magnetization target to fixedly adhere to the base member.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
An actuator includes a movable body including: a disk-shaped magnet, a pair of disk-shaped yokes fixed to front and back surfaces of the disk-shaped magnet, a pair of spring retaining parts connected at one ends to the disk-shaped yokes, respectively, and connected at other ends to central portions of circular leaf springs, respectively, and a protruding part protruding in an axial direction of the disk-shaped magnet from the other end of one spring retaining part of the pair of spring retaining parts; and a fixing body including: a coil disposed at an outer circumference of the movable body, and a case including an opening portion through which the protruding part is inserted, the case accommodating the coil and the movable body such that a protruding end side of the protruding part protrudes to an outside.
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
H02K 11/01 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
A rolling bearing includes an outer ring, an inner ring, a rolling element disposed in a rollable manner between the outer ring and the inner ring, and an O-ring made of an elastic body and fitted to a peripheral groove provided at an outer peripheral surface of the outer ring. A first bottom surface is provided at a center of the peripheral groove in an axial direction, and a second bottom surface is provided at an end part of the first bottom surface in the axial direction. The second bottom surface extends in a circumferential direction and has a smaller diameter than the first bottom surface.
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 27/06 - Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
F16C 35/077 - Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
A coil device of the present application includes a bobbin including a winding core portion, a coil wound around the winding core portion, a flange portion provided integrally with the winding core portion, a pin terminal block provided integrally with the flange portion, a plurality of pin terminals (P) provided at predetermined intervals at the pin terminal block and connected to lead wires of the coil, and a circuit board connected to the plurality of pin terminals (P). The pin terminal block includes a plurality of pin terminal groove portions formed in a groove shape along an axial direction of the winding core portion, and a pin fixing portion formed in an interior space of the pin terminal groove and integrally fixed to one end of the pin terminal (P).
This vacuum generation device is provided with a body (500) and a suction device (100) provided with a vacuum pump (160). The suction device (100) is removable from the body. The body (500) and the suction device (100) are engaged with each other by engagement mechanisms (134, 135, 514, 515). The suction device (100) is provided with terminals (181-185) for supplying power to the vacuum pump (160), and piping (167) through which air sucked by the operation of the vacuum pump (160) passes. The body (500) is provided with a connector (518) to which the terminals (181-185) are connected, and a connection port (517) to which the piping (167) is connected. The terminals (181-185) of the suction device (100) and the connector (518) of the body (500), and the piping (167) of the suction device (100) and the connection port (517) of the body (500) are connected to each other on the same surface as the surface (S1) on which the engagement mechanisms (134, 135, 514, 515) engage.
F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids
73.
SUCTION DEVICE, VACUUM GENERATION DEVICE, AND SUCTION-HOLDING DEVICE
A suction device (100) comprises: a vacuum pump (160); a bottom part (140); a top surface (111) formed at a position facing the bottom part (140) in the axial direction; a first opening (167) formed in the bottom part (140); and second openings (136, 137) formed on the top surface (111) side in the axial direction. A first ventilation path (P1) is formed in the bottom part (140), and a second ventilation path (P2) is formed between the bottom part (140) and the second openings (136, 137). Sucked air passes through the first ventilation path (P1) and the second ventilation path and is discharged from the second openings.
A vacuum generator (10) is provided with a mounting member (500), and a suction device (100) connected to the mounting member (500) and provided with a vacuum pump (160). The mounting member (500) is provided with a suction space (600) and a solenoid valve (800). The mounting member (500) connects the vacuum pump (160) to a tube (670) connected to a suction target (951, 952). The solenoid valve (800) opens, to the atmosphere, a suction path (700) including the tube (670) and the suction space (600).
H01L 21/677 - Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereofApparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components for conveying, e.g. between different work stations
F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids
F04C 29/00 - Component parts, details, or accessories, of pumps or pumping installations specially adapted for elastic fluids, not provided for in groups
75.
CONTROL DEVICE, SUCTION DEVICE, AND INFORMATION PROCESSING DEVICE
When decompressing the inside of a vacuum path (700), a control device (1000) supplies power to one or more vacuum pumps (100, 200, 300, 400) connected to the vacuum path (700) so as to operate at a first rotation speed. Additionally, when the pressure in the vacuum path (700) is reduced to or below a first pressure, the control device (1000) stops the supply of power to the one or more vacuum pumps (100, 200, 300, 400), or suppresses the supply of power so that the one or more vacuum pumps (100, 200, 300, 400) operate at a second rotation speed that is less than the first rotation speed.
This tactile sensation presentation device includes an operation part that is contacted and operated, and an actuator that is movable by electromagnetic driving. The actuator includes a vibration generation unit that causes the operation part to vibrate, and a fluid discharge unit that outputs a fluid to the front surface of the operation part.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
77.
RETAINER AND ROLLING BEARING PROVIDED WITH SAID RETAINER
[Problem] To provide a resin bearing retainer suitable for a use environment in which high-speed rotation is anticipated and a rolling bearing provided with this bearing retainer. [Solution] Provided are a bearing retainer including a resin and at least two types of carbon fibers different from each other and a rolling bearing including this bearing retainer.
A vacuum control device (500) has: a connection port (517) that is connected to a vacuum pump (160) and through which air sucked by the operation of the vacuum pump (160) passes; a ventilation path (610) that is continuous with the connection port (517) and to which a suction pad (710) is connected; and a check valve (613) that is disposed in the ventilation path (610), and switches between an open state and a closed state of the ventilation path (610). The check valve (613) is in the closed state in a state in which the vacuum pump (160) is stopped, and is in the open state during operation of the vacuum pump (160).
A fan according to one embodiment of the present disclosure includes a casing, an impeller including a hub portion, rotor blades, and a cylindrical portion, and fixed blades, the casing including an increasing diameter portion having an inner circumferential surface increasing in inner diameter from an air inlet side toward an air outlet side, a maximum outer diameter of the rotor blades being larger than a minimum inner diameter of the increasing diameter portion, a position of the minimum inner diameter of the increasing diameter portion being located, in an axial direction, at the air inlet side of a position of the maximum outer diameter of the rotor blades, the rotor blades projecting, in the axial direction, from the hub portion toward an air inlet, and a length of the fixed blades in the axial direction being longer than a width of the fixed blades along a radial direction.
A power supply device includes storage circuit including first node connected to power supply, second node grounded, and electrical double-layer capacitor between first and second nodes; discharge circuit to discharge the storage circuit; charge circuit to charge the storage circuit; and power supply controller to measure voltage at first node and control the discharge and charge circuits. The power supply controller performs: measuring the voltage at first node and measuring first capacitance value and first equivalent series resistance value of the electrical double-layer capacitor upon the discharge circuit discharging the storage circuit; measuring the voltage at first node and measuring second capacitance value and second equivalent series resistance value of the electrical double-layer capacitor upon the charge circuit charging the storage circuit; computing third capacitance value based on first and second capacitance values; and computing third equivalent series resistance value based on first and second equivalent series resistance values.
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
B60R 16/03 - Electric or fluid circuits specially adapted for vehicles and not otherwise provided forArrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric for supply of electrical power to vehicle subsystems
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 9/04 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
A blower according to one aspect of the present disclosure comprises: a casing (10); an impeller (20) that is provided with a hub part (21), a plurality of moving blades (30), and a cylindrical part (40); and a plurality of fixed blades (70). The casing includes an enlarged-diameter part (115), which has an inner circumferential surface, the inner diameter of which increases from an intake port (11) side toward an exhaust port (12) side. The maximum outer diameter of the plurality of moving blades is larger than the minimum inner diameter of the enlarged-diameter part. The minimum inner diameter of the enlarged-diameter part is positioned, in the axial direction, closer to the intake port side, as compared to the position of the maximum outer diameter of the plurality of moving blades. The plurality of moving blades protrude, in the axial direction, from the hub part toward the intake port. The length, in the axial direction, of the plurality of fixed blades is longer than the width, along the radial direction, of the plurality of fixed blades.
A motor (1) comprises: a stator (39) that has a magnetic body (37) having a plurality of magnetic pole parts (46), and a plurality of coils (38) wound around the magnetic body (37); a rotor (26); and a heat dissipation member (47) that is in contact with one end parts (38a or 38b) of the coils (38) in the rotation axis direction of the rotor (26) directly or through another member (54). The heat dissipation member (47) is disposed so as to be detachable from and attachable to the stator (39).
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
This pulse wave measurement device comprises a sensor unit, and an attachment unit that is connected to the outside of the sensor unit and can be attached to a subject. The sensor unit has: a fixed part that includes a cylindrical part; a movable part that is accommodated inside the cylindrical part; and a rotation part that closes one opening of the cylindrical part, the rotation part rotating relative to the fixed part using the central axis of the cylindrical part as a rotation axis. The movable part has: a sensor-holding part; a pulse wave sensor provided with a housing, a strain-generating body provided to one side of the housing, and a facing part provided to the other side of the housing, the strain-generating body being held inside the sensor-holding part so as to be exposed from one axial end side of the sensor-holding part; and a lid part that is fixed to the other axial end side of the sensor-holding part and is connected to the rotating part. A pivot part is provided to one of mutually opposing surfaces of the facing part and the lid part, and a recess into which the pivot part can be inserted is provided to the other of the mutually opposing surfaces. When the pivot part and the recess come into contact with each other, the pulse wave sensor can swing using a contact portion between the pivot part and the recess as a fulcrum, the strain body is exposed from the other opening of the cylindrical part, and the movable part moves in a reciprocating manner in the axial direction of the cylindrical part in association with rotation of the rotating part without rotating relative to the fixed part.
A position determination system includes: at least four communication devices respectively acquiring distances to a mobile terminal; a position determination unit determining a position of the mobile terminal from the distances acquired respectively by the at least four communication devices; a region determination unit determining, from the position of the mobile terminal determined by the position determination unit, which region of a plurality of regions set around the vehicle or in a vehicle interior the mobile terminal is positioned; and a selection unit selecting three distances from the distances acquired respectively by the at least four communication devices depending on the region where the mobile terminal is positioned determined by the region determination unit. The position determination unit determines the position of the mobile terminal 3 from the three distances selected by the selection unit.
A power supply device includes a storage circuit including first electrical double layer capacitor and second electrical double layer capacitor; first switch element; first discharging resistor; second switch element; second discharging resistor; and a power supply controller. The power supply controller performs procedure of discharging the first electrical double layer capacitor when an absolute value of difference between first capacitance voltage value of the first electrical double layer capacitor and second capacitance voltage value of the second electrical double layer capacitor is higher than a standard voltage value and the first capacitance voltage value is higher than the second capacitance voltage value, and procedure of discharging the second electrical double layer capacitor when the absolute value of the difference between the first and second capacitance voltage values is higher than the standard voltage value and the second capacitance voltage value is higher than the first capacitance voltage value.
This vibration presentation device comprises: a support part; a supported part which is supported by the support part and on which a vibration actuator is mounted; a gauge plate on which a strain gauge is arranged; and a connection member which has a plate spring part. The supported part is supported by the support part via the gauge plate and the connection member. For example, the gauge plate has a supported-part-fixing hole for fixing the gauge plate to the supported part and a plate-spring-part-fixing hole for fixing the gauge plate to the plate spring part.
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/041 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
A planar illumination device according to an embodiment includes a plurality of light sources, a condenser lens, and a field lens. The plurality of light sources are disposed two-dimensionally on a substrate and light emission of the plurality of light sources is individually controlled. The condenser lens is disposed at an exit side of the light sources in parallel with the substrate and configured to condense light exiting from the light sources. The field lens is disposed at an exit side of the condenser lens, disposed inclined in at least one direction orthogonal to a plane parallel to the substrate, configured to spread light incident from the condenser lens outward, and disposed along a liquid crystal panel attached externally.
A method of producing a rare earth iron-based sintered magnet according to an embodiment includes a step of filling a mold with a rare earth iron-based magnet powder produced by a rapid quenching method, a step of setting the mold in a sintering apparatus, supplying a predetermined current from electrodes, and pressurizing and heating the rare earth iron-based magnet powder filled to produce a sintered magnet body, and a step of magnetizing the sintered magnet body with a magnetizing device. The mold includes dies having a hollow cylindrical form, punches to be inserted into the dies, and die supports made of a conductive material and respectively disposed at both ends of the dies in an axial direction. A cavity to be formed by the dies and the punches is filled with the rare earth iron-based magnet powder. The dies include an inner die made of a non-conductive material and an outer die made of a conductive material and disposed outside the inner die, inner peripheral surfaces of the die supports are in contact with an outer peripheral surface of the outer die, and the electrodes are in contact with the die supports.
H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
H01F 13/00 - Apparatus or processes for magnetising or demagnetising
This data glove comprises first sensors (L1-L8, R1-R8) which are provided to first finger parts and detect contact of fingers, and second sensors (L9, R9) which are provided to second finger parts and detect the direction of movement of contacted fingers. Preferably, a plurality of the first sensors (L1-L8, R1-R8) are provided to the first finger parts. More preferably, the first sensors (L1-L8, R1-R8) are provided to corresponding portions between the joints of the first finger parts.
G06F 3/02 - Input arrangements using manually operated switches, e.g. using keyboards or dials
G06F 3/023 - Arrangements for converting discrete items of information into a coded form, e.g. arrangements for interpreting keyboard generated codes as alphanumeric codes, operand codes or instruction codes
An air blowing device (2) provided in a dryer (1) comprises: an impeller (10) that has a plurality of blades (11) arranged in a rotation direction (R); and a housing (30) that accommodates the impeller (10). The plurality of blades (11) extend in the radial direction of the impeller (10). The housing (30) is provided with a fluid inlet (32), a fluid outlet (33), and a cover (20) that covers the outlet (32). The cover (20) is provided with a plurality of extension parts (21), which are curved parts extending in the rotation direction (R) of the impeller (10). Of the plurality of extension parts (21), two mutually adjacent extension parts (21) have an opening (22) therebetween. The pressure of the fluid between the plurality of extension parts (21) and the impeller (10) is adjusted.
A45D 20/12 - Details thereof or accessories therefor, e.g. nozzles, stands
F04D 17/04 - Radial-flow pumps specially adapted for elastic fluids, e.g. centrifugal pumpsHelico-centrifugal pumps specially adapted for elastic fluids having non-centrifugal stages, e.g. centripetal of transverse-flow type
[PROBLEM] The purpose of the present invention is to provide a rolling bearing in which electrolytic corrosion can be suppressed, and a motor incorporating the bearing. [SOLUTION] Provided are a rolling bearing and a motor including the rolling bearing. The rolling bearing comprises: an inner ring; an outer ring arranged coaxially with and on the outer peripheral side of the inner ring; a plurality of rolling elements arranged between the inner ring and the outer ring; a cage for holding the rolling elements; and a grease composition held between the inner ring and the outer ring. The grease composition contains base oils, including an aromatic ester-based base oil, a thickener, and an ionic liquid containing borate anions, and has an electrostatic capacity of at least 4.6 pF or more under conditions of an electrode diameter of 10 mm, an inter-electrode distance of 1 mm, and a frequency of 10 kHz, or a loss tangent (tanδ), expressed as the ratio between the storage modulus and loss modulus at 25°C measured under the conditions of a film thickness of 0.5 mm, a shear strain of 1%, and a frequency of 100 Hz in a dynamic viscoelasticity measurement using a rotary rheometer, of at least 0.7.
C10M 169/04 - Mixtures of base-materials and additives
C10M 169/00 - Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
C10M 115/08 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
C10M 133/04 - Amines, e.g. polyalkylene polyaminesQuaternary amines
C10M 137/12 - Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having a phosphorus-to-carbon bond
C10M 139/00 - Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing atoms of elements not provided for in groups
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
F16C 33/66 - Special parts or details in view of lubrication
A rotating device includes a shaft, an impeller fixed to the shaft, a motor causing the impeller to rotate, and a casing accommodating the impeller and the motor. The casing includes a suction port and a discharge port for a fluid. The casing and a heat sink are adjacent in a radial direction of the impeller. The heat sink includes a first part adjacent to the discharge port and a second part disposed inside the discharge port. The first part is in contact with a heat pipe. The second part is in contact with the casing in an axial direction of the impeller.
A motor (1) is provided with: a cover (10) that comprises a cylinder (11), an annular frame (12) that surrounds the cylinder (11), and a plurality of spokes (13) that link the cylinder (11) and the annular frame (12); and a rotor (50) that is attached to the cover (10). Two spokes (14, 15) of the plurality of spokes (13) extend from the cylinder (11) approaching the frame (12), and a portion (17) of the frame (12) and the two spokes (14, 15) are linked.
A position determination device includes: a communication unit including communication devices to perform wireless communication with a mobile terminal 1, the communication devices to repeatedly perform UWB communication for detecting a distance measurement value Vr, at least one of the communication devices being configured to repeatedly perform BLE communication for receiving the movement value Vm; a main position determination unit to determine a first coordinate position Pf(n) as a position of the mobile terminal, based on distance measurement values Vr; a sub-position determination unit to determine a second coordinate position Ps(n) as a position of the mobile terminal 1, based on the movement value Vm; and a determination position setting unit to set any one of the first coordinate position Pf(n) and the second coordinate position Ps(n) as a determination coordinate position Pj(n) that is a current position of the mobile terminal.
A motor includes a rotor and a stator opposing the rotor in a radial direction. The rotor includes a yoke, a magnet, and a resin part covering the yoke and the magnet. The resin part is disposed adjacent to the magnet in a circumferential direction.
To increase the stability of an operation when the driving of a stepping motor is started. A motor drive control device includes a control unit configured to generate a control signal (Sd) for controlling driving of a two-phase stepping motor, and a drive unit configured to drive coils of two phases of the two-phase stepping motor based on the control signal (Sd). The control unit has, as control modes, a first commutation control mode for commutating the coils according to a target energization time based on a preset commutation condition, and a second commutation control mode for commutating the coils based on a detection result of a zero crossing point of a back electromotive voltage of the coils, and the control unit generates the control signal (Sd) in the first commutation control mode at the start of activation of the two-phase stepping motor, and generates the control signal (Sd) in the second commutation control mode when the detection result of the zero crossing point satisfies a predetermined condition.
Object
Object
Objective is to provide a grease composition for a pivot assembly and a pivot assembly bearing filled with the grease composition, and to provide a bearing apparatus as well as a drive apparatus including the bearing apparatus, which is capable of suppressing adhesion of a volatilized component to a magnetic disk or the like even when the grease composition is volatilized by application of the grease composition and the bearing, thereby suppressing occurrence of read/write errors of an HDD.
Object
Objective is to provide a grease composition for a pivot assembly and a pivot assembly bearing filled with the grease composition, and to provide a bearing apparatus as well as a drive apparatus including the bearing apparatus, which is capable of suppressing adhesion of a volatilized component to a magnetic disk or the like even when the grease composition is volatilized by application of the grease composition and the bearing, thereby suppressing occurrence of read/write errors of an HDD.
Solution
Object
Objective is to provide a grease composition for a pivot assembly and a pivot assembly bearing filled with the grease composition, and to provide a bearing apparatus as well as a drive apparatus including the bearing apparatus, which is capable of suppressing adhesion of a volatilized component to a magnetic disk or the like even when the grease composition is volatilized by application of the grease composition and the bearing, thereby suppressing occurrence of read/write errors of an HDD.
Solution
Provided are: a grease composition for a pivot assembly bearing including an aromatic ester-based base oil and a thickener, the aromatic ester-based base oil containing an aromatic ester compound having an ester group *—(CO)O— as a substituent on a ring, where * is a bonding site to an aromatic ring, and having an alkyl group with a total of 8 or more carbon atoms bonded to an oxygen atom of the ester group; a pivot assembly bearing filled with the grease composition for pivot assembly bearing; a bearing apparatus including the pivot assembly bearing; and a disk drive apparatus equipped with the bearing apparatus.
C10M 169/00 - Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
C10M 115/08 - Lubricating compositions characterised by the thickener being a non-macromolecular organic compound other than a carboxylic acid or salt thereof containing nitrogen
C10M 129/44 - Carboxylic acidsSalts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having 8 or more carbon atoms containing hydroxy groups
C10M 129/76 - Esters containing free hydroxy or carboxyl groups
C10M 133/12 - Amines, e.g. polyalkylene polyaminesQuaternary amines having amino groups bound to a carbon atom of a six-membered aromatic ring
C10M 133/40 - Six-membered ring containing nitrogen and carbon only
C10M 141/10 - Lubricating compositions characterised by the additive being a mixture of two or more compounds covered by more than one of the main groups , each of these compounds being essential at least one of them being an organic phosphorus-containing compound
C10N 20/00 - Specified physical properties of component of lubricating compositions
C10N 30/06 - OilinessFilm-strengthAnti-wearResistance to extreme pressure
C10N 30/10 - Inhibition of oxidation, e.g. anti-oxidants
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated semi-solidForm in which the lubricant is applied to the material being lubricated greasy
G11B 5/00 - Recording by magnetisation or demagnetisation of a record carrierReproducing by magnetic meansRecord carriers therefor
This pulse wave measuring device is attachable to a subject to be measured, and comprises: a pulse wave sensor having a strain gauge; a sensor placement member in which the pulse wave sensor is arranged; a first curved member having one end connected to the sensor placement member; a second curved member having one end connected to the sensor placement member; and a band member connected to another end of the first curved member and another end of the second curved member, wherein the first curved member and the second curved member are connected to opposite sides across the sensor placement member in a plan view, and wherein a curvature of the first curved member is different from a curvature of the second curved member.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
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
99.
MOTOR DRIVE CONTROL DEVICE, MOTOR UNIT, AND MOTOR DRIVE CONTROL METHOD
To satisfy a desired air flow-static pressure characteristic while satisfying constraints of a power supply capacity and without over-limiting the drive current. A motor drive control device includes: a control circuit unit configured to generate a drive control signal (Sd) for controlling an actual rotation speed of a motor based on a speed command signal indicating a target rotation speed of the motor; and a motor drive unit configured to drive the motor based on the drive control signal (Sd). The control circuit unit includes a power control unit configured to enable selection of one of: a speed feedback control mode to generate the drive control signal (Sd) so that the actual rotation speed of the motor matches the target rotation speed; and a current feedback control mode to generate the drive control signal (Sd) so that a drive current of the motor matches a target current. The power control unit sets a current threshold corresponding to a power supply voltage (Vdd) supplied from the outside as the target current, and when detecting that the drive current is not less than the current threshold, switches from the speed feedback control mode to the current feedback control mode.
H02P 29/032 - Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
An impeller (1) has attached thereto a metal shaft (SH) and is formed of a resin member (RE). The resin member (RE) comprises: a first portion (10) that includes a gate mark (GE); a second portion (20) that does not include the gate mark (GE); and a connection portion (30) that connects the first portion (10) and the second portion (20) and forms a recess (31).
B29C 33/42 - Moulds or coresDetails thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
