This powder magnetic core is composed of: soft magnetic particles; and an insulating material that is provided between the soft magnetic particles. The surface of this powder magnetic core is covered with a coating material of a compound that contains siloxane. The interior portion of this powder magnetic core is impregnated with the coating material. This powder magnetic core has a density of 5.8 g/cm3 or more.
H01F 1/147 - Alloys characterised by their composition
H01F 1/24 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together the particles being insulated
2.
BEARING DEVICE AND SPINDLE DEVICE WITH BEARING DEVICE
This bearing device comprises a first bearing (5a), a spacer (6), and a second bearing (5b) aligned along an axial direction on an outer circumference of a main shaft (4). Each of the first bearing (5a) and the second bearing (5b) comprises an inner ring (5ia, 5ib), an outer ring (5ga, 5gb), and a plurality of rolling elements (Ta, Tb). The spacer (6) comprises an inner ring spacer (6i) between two inner rings (5ia, 5ib), and an outer ring spacer (6g) between two outer rings (5ga, 5gb). Of the inner ring spacer (6i) and the outer ring spacer (6g), the fixed-side spacer is divided into a first member (A) and a second member (B), and a circuit board (33) is disposed in a space therebetween.
F16C 19/54 - Systems consisting of a plurality of bearings with rolling friction
B23B 19/02 - Working-spindles; Features relating thereto, e.g. supporting arrangements
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
F16C 33/66 - Special parts or details in view of lubrication
F16C 35/12 - Rigid support of bearing units; Housings, e.g. caps, covers for spindles with ball or roller bearings
Provided is a ball screw device comprising: a ball screw shaft having thread grooves provided in the outer circumferential surface thereof; a nut member which has thread grooves provided in the inner circumferential surface thereof and into which the ball screw shaft is inserted; a plurality of balls which fit between the thread grooves of the ball screw shaft and the thread grooves of the nut member; and a lock mechanism that restricts the rotation of the nut member. In a target position in the axial direction, a ball screw is retained in a locked state without a supply of electricity.
F16H 25/22 - Screw mechanisms with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
F16D 27/01 - Magnetically-actuated clutches; Control or electric circuits therefor with permanent magnets
F16D 27/04 - Magnetically-actuated clutches; Control or electric circuits therefor with electromagnets incorporated in the clutch, i.e. with collecting rings with axially-movable friction surfaces
F16D 55/06 - Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by moving discs or pads away from one another against radial walls of drums or cylinders without self-tightening action
F16D 65/18 - Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
H02K 7/06 - Means for converting reciprocating motion into rotary motion or vice versa
H02K 7/102 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
This mechanical component is made of steel that is subjected to quenching and tempering, the mechanical component comprising a carbonitrided layer on the surface thereof. The steel contains 0.13-0.58 mass% inclusive of C, 0.15-0.35 mass% inclusive of Si, 0.6-1.1 mass% inclusive of Mn, less than 0.025 mass ppm of P, less than 0.025 mass ppm of S, 1.2 mass% or less of Cr, 0.3 mass% or less of Mo, 0.25 mass% of V, and 0.25 mass% of Ni, the balance being Fe and unavoidable impurities. The average carbon concentration in the steel on the surface is 0.6 mass% or greater. The nitrogen concentration in the steel on the surface is 0.10 mass% or greater.
C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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
In this rolling bearing, a plurality of balls interposed between an inner and an outer race are held by a cage, and a seal member (6) that closes off a bearing space between the inner race and the outer race is attached to the outer race. A seal groove (7) is formed in the circumferential direction on the outer circumferential surface of the inner race, and the seal member (6) is a contact seal having a lip (15) that is in contact with the seal groove (7). An outside groove wall surface (7c) of the seal groove (7) is formed on an inclined plane inclined on the outer diameter side toward the outer side in the axial direction. The seal member (6) is formed in a round shape in which a tip (15c) of the lip (15) is in contact with the outside groove wall surface (7c) of the seal groove (7) at a contact angle of 80-100°. The angle of inclination (I) of the outside groove wall surface (7c) with respect to the axial direction is 55-65°.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
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
C12N 5/071 - Vertebrate cells or tissues, e.g. human cells or tissues
B05C 1/02 - Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to separate articles
B05C 5/00 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
B05C 11/10 - Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
B05D 1/26 - Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
B05D 1/36 - Successively applying liquids or other fluent materials, e.g. without intermediate treatment
B05D 3/00 - Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
B05D 7/00 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
C12N 5/077 - Mesenchymal cells, e.g. bone cells, cartilage cells, marrow stromal cells, fat cells or muscle cells
C12N 5/10 - Cells modified by introduction of foreign genetic material, e.g. virus-transformed cells
Provided is an insulated rolling bearing having an insulating coating on the outer peripheral surface of an outer ring or another such location, the insulated rolling bearing being exceptional in terms of properties for preventing electrolytic corrosion. This insulating rolling bearing 1 comprises an inner ring 2, an outer ring 3, raceway surfaces that are formed on the outer peripheral surface of the inner ring 2 and the inner peripheral surface of the outer ring 3, and a plurality of balls 4 that are interposed between the raceway surfaces, the outer peripheral surface 3a of the outer ring 3 having a resin coating 6 (insulating coating), and the resin coating 6 in the insulated rolling bearing 1 being composed of a resin composition having an insulation resistance value of 2000 MΩ or greater and a capacitance of10 nF or lower, the resin composition containing a polyphenylene sulfide resin, glass fibers, an inorganic filler having a thermal conductance of 10 W/m·K or greater, and a thermoplastic elastomer.
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 19/26 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for radial load mainly with a single row of rollers
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
A solid-lubricated rolling bearing (1) comprises an outer race (2), an inner race (4), a plurality of rolling elements (6) interposed between the outer race (2) and the inner race (4), and a solid lubricating agent (10) separating the rolling elements (6) from one another in a circumferential direction. A volume ratio of the solid lubricating agent (10) occupying a bearing internal space between the outer race (4) and the inner race (2) is set to 40 to 60%. The solid lubricating agent (10) is guided on at least one of an inner diameter surface (2a) of the outer race (2) and an outer diameter surface (4a) of the inner race (4).
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
10.
GREASE COMPOSITION, ROLLING BEARING, AND LUBRICATION METHOD
Provided are: a grease composition that achieves low noise together with high-temperature, high-speed durability; and a rolling bearing in which the grease composition is encapsulated. The grease composition 7 contains a base oil, a thickener, and an additive. The base oil is a mixed oil of a synthetic hydrocarbon oil and an ester oil. The thickener is an aliphatic diurea compound. The initial acid value of the grease composition is 2.0 mg KOH/g or more. The additive contains the elements sulfur (S), phosphorus (P), and zinc (Zn), and the total amount of these elements contained in the grease composition 7 is 0.50 mass% or more relative to the total amount of the grease composition.
C10M 169/02 - Mixtures of base-materials and thickeners
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
C10M 107/02 - Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 30/10 - Inhibition of oxidation, e.g. anti-oxidants
C10N 40/00 - Specified use or application for which the lubricating composition is intended
A bearing device (1) comprises a bearing (2) and an acceleration sensor (15). The bearing (2) includes an outer race (3), an inner race (4), and rolling elements (8). The acceleration sensor (15) detects vibrations of the bearing (2). A first mating element (33A) is formed in a fixed race integral member which includes a fixed race, this being either the outer race (3) or the inner race (4), and which is integrated with the fixed race. The first mating element (33A) is at least one of a recessed portion and a projecting portion. The acceleration sensor (15) is fixed to the fixed race integral member.
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 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
A hydrodynamic bearing (bearing sleeve 8) is equipped with a sintered body in which dynamic pressure-generating parts A1, A2 are die-formed on the inner-circumferential surface thereof. The dynamic pressure-generating parts A1, A2 have a plurality of dynamic pressure grooves G1 which extend in a direction which is angled relative to the circumferential direction, and a plurality of inclined hill sections G3 which are provided between the plurality of dynamic pressure grooves G1 in the circumferential direction. The circumferential direction width h[mm] of each inclined hill section G3 and the dynamic pressure groove G1 depth Hf[μm] adjacent to said hill section G3 on one side thereof in the circumferential direction satisfy 0.1
The objective of the present invention is to make it possible to avoid contraction of an inner diameter surface of an inner race of a rolling bearing even if a magnetic ring of a magnetic rotation sensor is coupled to an outer circumferential portion of the inner race, and to improve the reusability of the magnetic ring when replacing the inner race, while enabling the outer circumferential portion of the inner race to be coupled to the magnetic ring even if the width of the inner race is small. In order to achieve this objective, a hook member (20) formed in an annular shape using a resin is provided. An outer circumferential groove (12a) extending in a circumferential direction is formed in an outer circumferential portion (12) of an inner race (3). The hook member (20) includes a protruding portion (25) that is engaged with the outer circumferential groove (12a) of the inner race (3). A metal core (18) is retained by the hook member (20).
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
A claw pole electricity generator (4) includes a stator (10) provided in a sensor unit (5), and a magnetic ring (11) fixed to a rotating member (1). A sensor board (12) is accommodated in an opening portion (13) of the sensor unit (5). A yoke (20) has a plurality of cutout portions (35) which expose a portion of an internal coil (22) to the outside of the yoke (20), and which communicate with the opening portion (13). The cutout portions (35) are disposed in a plurality of locations that are spaced apart in a circumferential direction. The sensor board (12) and the coil (22) can be protected by injecting a sealing material (14) from the opening portions (13).
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
Provided is a ball bearing that has excellent low torque performance without using a holder with a special shape. This ball bearing comprises an inner race 2 having an inner race track groove on the outer circumference thereof, an outer race 3 having an outer race track groove on the inner circumference thereof, balls 4 interposed between the inner race track groove and the outer race track groove, and a holder 5 that holds the balls 4. The number Z of the balls 4 satisfies the condition of formula (1) below. (1): Z ≤ ((π × Dp)/2Da) where Z is the number of the balls 4 (Z is an integer of three or more), Dp is the pitch diameter of the balls 4 [unit: mm], and Da is the diameter of the balls 4 [unit: mm].
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
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
F16J 15/324 - Arrangements for lubrication or cooling of the sealing itself
A power supply device (17) comprises a first circuit (61) and a converter (53). The first circuit (61) converts alternating-current voltage to a first direct-current voltage and outputs the first direct-current voltage. The converter (53) outputs a second direct-current voltage produced by adjusting the first direct-current voltage to a first voltage range to an electronic circuit (54). The input voltage of the converter (53) is set to a second voltage range. The first circuit (61) converts the alternating-current voltage to a first direct-current voltage adjusted to the second voltage range.
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
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
G05F 3/16 - Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
H02K 11/35 - Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
H02M 3/155 - Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
H02M 7/10 - Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode arranged for operation in series, e.g. for multiplication of voltage
H02P 9/04 - Control effected upon non-electric prime mover and dependent upon electric output value of the generator
This bearing device comprises a bearing and a sensor unit (6). The sensor unit (6) is fixed to a fixed ring (3) of the bearing and holds a sensor (15) for monitoring the state of the bearing. The sensor unit (6) includes a holding member (12) which has a side plate section (12A) and a peripheral section. The holding member (12) is fitted to the fixed ring (3) in the peripheral section. A first fitting surface (12Ca) fitted to the fixed ring (3) in the peripheral section and a second fitting surface (3a) fitted to the peripheral section in the fixed ring (3) are disposed such that portions thereof are in contact with each other, and the other portions thereof are distant by a gap from each other.
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
A wheel bearing device 1 comprises: an outer wheel 2 (external member); a hub wheel 3 and an inner wheel 4 (internal member); a ball 8 (rolling body); and an outer-side seal member 10 (seal member). The outer-side seal member 10 has a cored bar 11 and a seal section 12. The seal section 12 has: a projection 12e that protrudes toward the inner side and contacts an outer-side end surface 2g of the outer wheel 2; and a protrusion 12f that is disposed radially outward of the projection 12e, that protrudes toward the inner side, and that contacts a chamfered section 2h of the outer wheel 2.
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
F16C 19/18 - 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 two or more rows of balls
F16J 15/3276 - Mounting of sealing rings with additional static sealing between the sealing, or its casing or support, and the surface on which it is mounted
19.
BEARING SEALING DEVICE AND VEHICULAR BEARING DEVICE
Provided are a bearing sealing device and a vehicular bearing device that have excellent resistance to three-body abrasive wear even under an environment penetrated by mud water or the like, and with which it is possible to improve sealing performance. A bearing sealing device 11, which is attached between an outer race and an inner race to seal a bearing space, comprises a seal member 14 made of an elastic material, and a slinger 16 made of metal. The seal member 14 has a main lip 14b and a side lip 14c provided on the outside of the main lip 14b. Each of the lips 14b and 14c is in contact with the slinger 16 with a predetermined interference. The part of the slinger 16 in contact with the main lip 14b and the side lip 14c has a hardness HRC larger than 10.
F16C 19/18 - 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 two or more rows of balls
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
F16J 15/3244 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
F16J 15/3256 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
20.
REVERSE INPUT CUTOFF CLUTCH AND ACTUATOR USING SAME
This reverse input cutoff clutch is configured in a manner such that in response to reverse input torque during normal operation, an output shaft (3) stops rotating as a result of a moving force acting on a spacer (6) and a revolution/rotation operation of the spacer (6) being impeded, and during emergency operation, a cam receiver (2) and an output shaft (3) are connected by tightening a screw (12) screwed into the cam receiver (2), which integrally rotates with an input shaft (1), and pressing the same against the flange part (3a) of the output shaft (3), making it possible to apply a reverse input torque and for the output shaft (3) to integrally rotate with the input shaft (1).
A sintered oil-impregnated bearing (8) has a bearing surface (8a1) that forms a radial bearing gap with a shaft member (2). The bearing surface (8a1) has a plurality of pores. The pores that have a pore volume of greater than 0.0005 mm3 are considered to be large pores (40), and there are no large pores (40) from the bearing surface (8a1) to a depth of 50 μm.
Provided are: a resin retainer capable of suppressing initial leakage of grease; and a roller bearing provided with said retainer. A retainer 5 is a resin retainer for a crown-shaped roller bearing, the retainer having a plurality of pockets 52, each of which opens on one side in the axial direction and holds a ball, i.e., a rolling element. The retainer has a connecting part 54 that connects the pockets 52 adjacent to each other in the circumferential direction, and the connecting part 54 has, on an end surface thereof on the pocket opening side, an inclined surface 56 inclined with respect to the radial direction when observed in a cross-section view taken along the axial direction. The connecting part 54 has a wall thickness ho (mm) at an outer diameter side end section Eo, which is less than the wall thickness hi (mm) at an inner diameter side end section Ei.
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
Provided are: a grease composition that achieves low dust generation properties, rust resistance, and high-temperature/high-speed durability; and a rolling bearing in which the grease composition is encapsulated. The grease composition 7 contains a base oil, a thickening agent, and a rust inhibitor. The base oil contains a synthetic hydrocarbon oil as a main component, does not contain an ester oil, and has a kinematic viscosity of 40 mm2/s to 90 mm2/s at 40ºC. The thickening agent is a diurea compound obtained by reacting a diisocyanate component and a monoamine component. The monoamine component constitutes an aliphatic monoamine and an alicyclic monoamine and is contained at an amount of less than 14 mass% of the total amount of the base oil and the thickening agent. The rust inhibitor contains a sorbitan fatty acid ester and has a worked penetration of 200 to 240 as measured in accordance with JIS K 2220.
C10M 169/06 - Mixtures of thickeners and additives
C10M 107/02 - Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
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
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
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 40/00 - Specified use or application for which the lubricating composition is intended
Provided is a shell type needle roller bearing with an outer ring, which uses a material with excellent corrosion resistance, is easily press fit, and can be manufactured at low cost. A shell type needle roller bearing (8) having a shell type outer ring (1) made of an austenite stainless material, and a non-heat-treated surface on an outer diameter surface (1a) of the shell type outer ring (1) is manufactured.
A control device (4) for a link actuation device (1) comprises an instruction conversion unit (42), an arm setting unit (50), and an arm control unit (39). The instruction conversion unit (42) performs inverse conversion to calculate rotation angles for arms (11a to 13a) corresponding to a target link attitude (θ, φ), when the attitude of a distal-end-side link hub (15) opposite a proximal-end-side link hub (14) is changed. The arm setting unit (50) sets two of the arms as drive arms for driving and the remaining arm as a free arm, on the basis of the calculated rotation angles for the arms (11a to 13a). The arm control unit (39) drives and positions the free arm after only the two drive arms that have been set are driven and positioned.
Provided is a rolling bearing 1 in which, when an area enclosed by a line connecting an outer edge of a scatter plot obtained by plotting an infinite number of positions at which a retainer 5 located in a neutral position can be present without contacting a ball 4 on two-dimensional coordinates is defined as a retainer movable area 10, a ratio Ri/Re of a maximum inscribed circle diameter Ri of the retainer movable area 10 to a minimum circumscribed circle diameter Re of the retainer movable area 10 is 0.900 or less.
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
A steering function-equipped hub unit (1) according to the present invention comprises: a hub unit body (2) that has a hub bearing (15); a unit support member (3) that rotatably supports the hub unit body (2) around a steering axial center (A) extending in the vertical direction; and a steering actuator (5) that drives the hub unit body (2) so as to rotate around the steering axial center (A). The steering actuator (5) comprises: a motor (26); a speed reducer (27) that reduces the speed of rotation of the motor (26); and a linear motion mechanism (25) that converts rotational output of the speed reducer (27) to linear motion of an output rod (25a) through a rotation support member (28). The speed reducer (27) is a parallel shaft-type speed reducer using pulleys (27a, 27b) and a belt (27c), and comprises a first seal member (51) which is a seal member for sealing the area between the speed reducer and the rotation support member (28) adjacent thereto.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 7/09 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle characterised by means varying the ratio between the steering angles of the steered wheels
B62D 17/00 - Means on vehicle for adjusting camber, castor, or toe-in
28.
HUB UNIT WITH STEERING FUNCTION, STEERING SYSTEM, AND VEHICLE
The present invention provides a hub unit with a steering function that converts linear motion of an actuator into rotational motion with high efficiency and that has a high strength with respect to reverse input from a wheel. The present invention comprises: a hub unit body (2) that has a hub bearing (15) which rotationally supports a wheel (9); a unit support member (3) that rotatably supports the hub unit body around a turning axis (A) extending in the up-down direction; and a steering actuator (5) that drives the hub unit body to rotate about the turning axis, wherein the steering actuator has a motor and a translational mechanism (25) that converts rotation output from the motor into linear motion, a joint part (8) is interposed between the translational mechanism and the hub unit body, and, when the hub unit body is at a neutral position in the steering angle, an axis (L) of the translational mechanism of the steering actuator is orthogonal to a plane (P) including the turning axis of the hub unit body and a first center point (JO1) of the joint part on the hub unit body side.
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
B62D 7/09 - Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in a single plane transverse to the longitudinal centre line of the vehicle characterised by means varying the ratio between the steering angles of the steered wheels
A monitoring device (80) comprises: an acquisition unit (81) that acquires a measured value from a sensor (70); a detection unit (82) that detects abrasion noise of a bearing (51) on the basis of the measured value; and a diagnostic unit (83) that diagnoses the state of the bearing (51) on the basis of a measured value. The diagnostic unit (83) diagnoses the bearing (51) by using a measured value that does not include the abrasion noise detected by the detection unit (82).
Provided is a wheel bearing device with which it is possible to suppress an increase in weight while suppressing the generation of abnormal sounds. In a wheel bearing device 1: a ratio of an axial direction length C of a recessed portion 3h formed in a through-hole 3e of a hub ring 3 to a pitch circle diameter A of the recessed portion 3h formed in an inner circumferential surface of the hub ring 3 is 0.7≤(C/A)≤1.07; a ratio of an axial direction distance E between a flange surface 3j of a wheel attachment flange 3b and an inner end surface 4b of an inner race 4 to an inter-ball pitch F between an inner ball row 5 and an outer ball row 6 is 2.85≤(E/F); and a ratio of the axial direction distance E to a pitch circle diameter D of balls 8 is 0.8≤(E/D)≤0.94.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axles; Couplings between axle parts or sections
F16C 19/18 - 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 two or more rows of balls
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
Provided is a wheel bearing device that facilitates processing for spline-fitting a wheel bearing and a constant-velocity universal coupling to each other. In a wheel bearing device 1, a through-hole 3e of a hub wheel 3 includes a first hole 31 in which a spline-fittable recess 3h is formed, and a second hole 32 that has a diameter greater than or equal to that of the first hole 31. A protrusion 24 that is spline-fittable in the recess 3h is formed on the outer peripheral surface of a stem portion 23 of the constant-velocity universal coupling 20. The protrusion 24 includes: a first protrusion 25 that spline-fits in the recess 3h in a generally closely contacted state; and a second protrusion 26 that is positioned on the outer side than the first protrusion 25 and is spline-fittable in the recess 3h with a gap m therebetween in the radial direction or the circumferential direction, or both the radial direction and the circumferential direction.
B60B 35/18 - Torque-transmitting axles characterised by the arrangement of the bearings for the torque transmitting elements in the axle housings
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axles; Couplings between axle parts or sections
F16C 19/18 - 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 two or more rows of balls
F16D 1/06 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
The present invention addresses the problem of making a wheel bearing device further lightweight while increasing the rigidity of the wheel bearing device. This wheel bearing device (1) comprises: an outer ring (2) having a double row of outer raceways (23), (24); an inner member which is composed of a hub ring (3) having a small-diameter step (31) extending in the axial direction on the outer periphery of the hub ring, and an inner ring (4) press-fitted into the small-diameter step (31), and has a double row of inner raceways (33), (41) opposing the double row of outer raceways (23), (24); and a double row of ball lines (5), (6) rollably accommodated between both raceways of the outer ring (2) and the inner member, wherein the hub ring (3) has a caulked part (38) caulked to the inner ring (4) on the axial direction end of the hub ring, and the circularity A of an outer peripheral surface (38a) of the caulked part (38) is 0.4 or lower.
B21D 39/00 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
B60B 35/02 - Dead axles, i.e. not transmitting torque
F16C 19/18 - 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 two or more rows of balls
This rotation transmission device includes: a roller retainer (7) supported between the outer periphery of an inner ring (5) and the inner periphery of an outer ring (4) so as to be movable in the circumferential direction; an armature (10) disposed opposing an electromagnet (9) in the axial direction so as to perform axial direction movement when the electromagnet (9) is energized; and a motion conversion mechanism (11) that moves the roller retainer (7) in the circumferential direction in accordance with the axial direction movement of the armature (10). The electromagnet (9) is formed to have a greater inner diameter than the outer diameter of the outer ring (4), and the electromagnet (9) is disposed radially outward of the outer ring (4) so as to surround the outer periphery of the outer ring (4).
F16D 41/067 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
F16D 27/12 - Clutch systems with a plurality of electromagnetically-actuated clutches
In the present invention, a parameter adjustment device (5) comprises: a coordinate data acquisition unit (10) that acquires coordinate data of industrial machinery; a parameter generating unit (20) that generates operating parameters; a parameter storage unit (30) that stores the operating parameters; a status data acquisition unit (40) that acquires status data of industrial machinery; an index data calculating unit (50) that calculates index data on the basis of the status data; a sample storage unit (60) that stores sample data in which the operating data and the index data are associated; a parameter search unit (70) that searches the operating parameters estimated to be suitable using the sample data; and a model learning unit (80) that generates learning models for estimating suitable parameters from the coordinate data using the learning data in which the operating parameters estimated to be suitable and the coordinate data are associated.
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
G05B 19/4155 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by programme execution, i.e. part programme or machine function execution, e.g. selection of a programme
When a diameter of a rolling element (4) is Dw (mm), the number of rolling elements (4) is z (pieces), a pitch circle diameter of the rolling elements (4) is dp (mm), capacitance is C (F), and electrical resistance is R (Ω), a pair of X and Y defined by the following formulas (1), (2) satisfy 1.6 < X < 130, and Y ≥ 2.45×10-4, or 1.6 < X, and 0 < Y < 2.45×10-4.
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
In at least one of an inner ring raceway surface, an outer ring raceway surface, and a rolling surface for rollers 13, there are formed crownings 13b, 13c having a generatrix shape in which a plurality of circular arcs are connected to thereby approximate a reference logarithmic curve. A ratio a/b is set to a range of 0.55≤a/b≤0.95, where a=DP3−DP4 and b=DP2−DP3, DP1 to DP4 being the respective drop amounts at generatrix-direction positions GP1 to GP4 of the crownings.
In order to minimize temperature increase when used under the condition that an inner member having a race surface on the outer side thereof rotates while an outer member having a race surface on the inner side thereof is stationary and to facilitate the insertion of rollers between drop prevention portions of adjacent posts in a rolling-element-guided cage, posts (41) are configured to be capable of coming into contact with, on drop prevention portions (44) thereof, rollers (30) for guiding a cage (40), and in a virtual plane orthogonal to the central axis (O) of a roller (30), the contact angle (θ) formed by a first virtual straight line (L1) connecting to the central axis (O) from a contact point (P) between the roller (30) and a post (41) and a second virtual straight line (L2) orthogonal to the radial direction and passing through the central axis (O) is set to 20-24°.
A ball bearing (100) comprises an inner ring (10), an outer ring (20), and a ball (30). At least one bearing component, from among the inner ring, the outer ring, and the ball, has a contact surface (10da, 20ca, 30a). The bearing components are formed from steel that has undergone nitriding, quenching, and tempering. The steel contains carbon: 0.90 mass% to 1.20 mass% inclusive; silicon: 0.35 mass% to 0.80 mass% inclusive; manganese: 0.80 mass% to 1.20 mass% inclusive; nickel: less than 0.30 mass%; chromium: 0.80 mass% to 1.30 mass% inclusive; and molybdenum: less than 0.10 mass%, with the remainder being iron and unavoidable impurities. The value obtained by dividing the silicon concentration in the steel by the manganese concentration in the steel is less than 0.51.
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
Provided is a wheel bearing device that can further reduce weight while increasing rigidity. A wheel bearing device 1 comprises: an outer ring 2 having a double row of outer raceway surfaces 23, 24; an inner member (hub ring 3 and inner ring 4) having a double row of inner raceway surfaces 33, 41 opposing the double row of outer raceway surfaces 23, 24; and double ball rows 5, 6 accommodated between both raceway surfaces of the inner member and the outer ring 2 in a manner allowing rolling. The pitch diameter b of balls 7 in the ball rows 5, 6, and the pitch a between an outer side ball 7 and an inner side ball 7 in the ball rows 5, 6 satisfy the relationship b/a ≥ 2.0.
F16C 19/18 - 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 two or more rows of balls
B60B 35/02 - Dead axles, i.e. not transmitting torque
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axles; Couplings between axle parts or sections
A ball bearing (100) comprises an inner ring (10), an outer ring (20), and a ball (30). At least one bearing part among the inner ring, the outer ring, and the ball has contact surfaces (10da, 20ca, 30a). The bearing parts are made of steel that has undergone quenching and tempering. The steel contains 0.90-1.20 mass% of carbon, 0.35-0.80 mass% of silicon, 0.80-1.20 mass% of manganese, less than 0.30 mass% of nickel, 0.80-1.30 mass% of chrome, and less than 0.10 mass% of molybdenum, with the balance being iron and unavoidable impurities. The value obtained by dividing the silicon concentration in the steel by the manganese concentration is less than 0.51.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for bearing races
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
A bearing device 1 for a vehicle wheel comprises: an outer member (outer ring 2) having a double row of outer raceway surfaces 2c, 2d on the inner circumference; inner members (hub ring 3 and inner ring 4) having a double row of inner raceway surfaces 3d, 4a facing the double row of the outer raceway surfaces 2c, 2d on the outer circumference; and a plurality of tapered rollers 51 accommodated so as to freely roll between the outer raceway surfaces 2c, 2d and the inner raceway surfaces 3d, 4a, the inner raceway surfaces 3d, 4a being integrally formed with large flange sections 3e, 4b that come into sliding contact with large-diameter-side end surfaces 51a of the tapered rollers 51, wherein the large flange sections 3e, 4b have an arithmetic mean roughness Ra of 0.08 μm or less, and a base oil of grease to be filled in the space surrounding the tapered rollers 51 has a kinematic viscosity at 40°C of 40 to 80 mm2/s.
F16C 33/66 - Special parts or details in view of lubrication
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 169/02 - Mixtures of base-materials and thickeners
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
This crown-shaped retainer comprises an annular portion (9) and a plurality of column portions (10), each column portion (10) being formed in a bifurcated shape having a pair of hook portions (13), and each hook portion (13) being provided with a slit (14) dividing the hook portion (13) in a radial direction, as seen from an axial direction, wherein the slits (14) are formed in positions offset in the radial direction from a pitch circle (P) so as not to overlap the pitch circle (P).
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
In this outer ring guide retainer-attached ball bearing, a crown-type resin retainer (4) has: an annular section (11) disposed facing the radial inside of one outer ring groove shoulder section (9); and a plurality of columnar sections (12) having cantilever beam shapes which axially extend from the annular section (11), wherein an outer ring guide surface (17) which slides on one outer ring groove shoulder section (9) is provided on the outer circumference of the annular section (11), and the columnar sections (12) each have an outer ring guide protrusion (15) which slides on the other outer ring groove shoulder section (10).
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
Provided is a ball bearing in which even though centrifugal force is applied to the retaining claws, the contact pressure between the retaining claws and the balls can be suppressed, and abnormal noise, abnormal vibration, and increased resistance caused by swinging of the retainer can be suppressed. The ball bearing is characterized by that a retaining claw 32 of a crown-shaped retainer 24 is composed of three portions, from the annular base 30 toward the axially other side, the outer diameter side having a larger centrifugal acceleration than the inner diameter side: a claw base portion 32a that is located on the annular base 30; a claw central portion 32b located on the distal end side of the claw base portion 32a and having an outer diameter smaller than the outer diameter of the claw base portion 32a; and a claw tip portion 32c located on the distal end side of the claw central portion 32b and having an outer diameter smaller than the outer diameter of the claw central portion 32b, the outline of the outer diameter of the claw central portion 32b being configured on the larger diameter side than the center P1 of a ball 23 and a pocket 31.
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
45.
CONSTANT VELOCITY UNIVERSAL JOINT AND METHOD FOR MANUFACTURING SAME
A ground surface comprising numerous ground lines P is provided to an outer peripheral surface 24b of a retainer 24 and to an outer peripheral surface 22b of an inner joint member 22. The ground surface comprises removed portions R formed by removing tip ends of protruding portions Q provided at a boundary of the ground lines P.
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
F16D 3/223 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts
F16D 3/227 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
Provided is a ball bearing in which, even when a retaining claw of a crown type retainer is deformed by centrifugal force, a strong contact between an inner radial side of a pocket and a ball can be avoided, and centrifugal whirling of the retainer is small and does interfere with rotation. A retainer 24 has an annular portion 30 located on one side in an axial direction of a ball 23, and a plurality of pairs of retaining claws 32 extending from the annular portion 30 toward the other side in the axial direction. A pocket 31 for storing the ball 23 is formed by opposite surfaces of the retainer claws 32 adjacent to each other in a circumferential direction, and one end surface of the annular portion 30 in the axial direction. An inner circumferential surface of the pocket 31 is a composite surface composed of a spherical concave surface 31a that holds the ball 23, and a conical surface 31b. The spherical concave surface 31a is located on the outer radial side, and the conical surface 31b is located on the inner radial side.
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
Provided is a seal ring having improved resistance when assembled into an annular groove even if the seal ring is a small-diameter PPS seal ring. This seal ring 1 is a molded article of a polyphenylene sulfide resin composition and has a joint 5 in one location. The seal ring 1 also has, on both sides of a joint-opposing part 5F, thin-walled parts 6 where the radial-direction thickness of the ring is reduced at a ring inner peripheral surface 3, the thin-walled parts having a bending elastic modulus of 10,000 Mpa or less and a bending strain exceeding 2.0%. The radial-direction thickness of the thin-walled parts is 50-70% of the radial-direction thickness of the joint-opposing part 5F.
A sliding-type constant velocity universal joint 1 comprises: an outer joint member 2 having a plurality of linear track grooves 7 formed therein; an inner joint member 3 having a plurality of linear track grooves 9 formed therein; a plurality of torque transmission balls 4; and a cage 5 for storing each torque transmission ball 4 in a pocket 5a, wherein the center of curvature O1, Oc1 of a spherical outer peripheral surface 11 of the cage 5 and the center of curvature O2, Oc2 of a spherical inner peripheral surface 12 are offset to the opposite side in the axial direction with respect to a joint center O. The sliding-type constant velocity universal joint 1 is characterized in that a range of from 10 mm on a depth side to 10 mm on an opening side with respect to a center C of a slide range in a joint axis direction of the track groove 7 of the outer joint member 2 is defined as a central range W, a portion 7a at which a pitch circle diameter (PCD) of the track groove 7 of the outer joint member 2 is smallest is formed in the central range W, the minimum value of a PCD clearance Δ of the track grooves 7, 9 in the central range W is set to from 0.010 mm to 0.100 mm, and a mutual error of PCD of the track groove 7 of the outer joint member 2 in the central range W is not greater than 0.150 mm.
F16D 3/227 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a cylinder co-axial with the respective coupling part the joints being telescopic
This fluid dynamic pressure bearing lubricant oil composition is to be used in a fluid dynamic pressure bearing 8 in which radial dynamic pressure generation units A1, A2 are provided to the inner circumferential surface 8a of a porous body, and has the following compositional makeup. Specifically, a base oil having a kinematic viscosity of more than 30 mm2/s but not more than 80 mm2/s at 40°C is used as the base oil of the lubricant oil composition. In addition, the compositional makeup of the lubricant oil composition is adjusted such that the kinematic viscosity of the lubricant oil composition at 40°C is 90-140 mm2.
C10M 107/02 - Hydrocarbon polymers; Hydrocarbon polymers modified by oxidation
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
50.
CONTROL DEVICE, MANAGEMENT SYSTEM, AND MANAGEMENT METHOD
A detecting unit (45) acquires detected data relating to a wind-powered electricity generating device (20). A control device (100) generates abnormality information indicating an abnormality or a pre-indication of an abnormality of the wind-powered electricity generating device (20), on the basis of the detected data. The control device (100) transmits the abnormality information to a user terminal (50).
A detection unit (45) acquires detected data of a wind power generation device (20). A control device (100) generates maintenance information for the wind power generation device (20) on the basis of the detected data. The control device (100) transmits the maintenance information to a maintenance terminal (72).
This deep groove ball bearing (1) comprises: an inner race (2), which is an inner member; an outer race (3), which is an outer member; a plurality of balls (4) interposed between these inner and outer races (2, 3); and a waveform retainer 5 that retains these balls (4). A band width (h), which is the radial-direction dimension of the waveform retainer (5), is set to 30-44% of a diameter (BD) of the balls (4). Limiting the upper limit value of the band width (h) to 44% or lower of the ball diameter has the effect of allowing grease to flow easily and the effect of decreasing the stirring force of the grease, thereby inhibiting a temperature increase of the deep groove ball bearing (1) during a rapid acceleration rotation. Since the lower limit value of the band width (h) is set to at least 30% of the ball diameter, the movement of the balls (4) stabilizes, and it is possible to satisfy the required retainer strength.
F16C 33/42 - Ball cages made from wire or sheet-metal strips
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
A power-generating unit (1) comprises: a natural energy generation device including solar panels (4a, 4b); and a power supply device (6) for supplying power generated by the natural energy generation device to electrical equipment (5). The solar panels include a first solar panel (4a) provided on a part of a structure and a second solar panel (4b) provided on another part of the structure. The power supply device (6) has a switch (11) capable of switching between a first switching mode in which use of the first and second solar panels (4a, 4b) is possible and a second switching mode in which use of either the first or second solar panel (4a, 4b) is possible.
This grease composition for a constant-velocity joint contains (a) base oil having a kinematic viscosity of 16.0 mm2/s or higher at 100°C, and a viscosity index of 90 or higher, (b) a diurea-based thickener, e.g., aliphatic diurea, (c) 0.2-2.0 mass% of zinc dialkyldithiophosphate, (d) 0.5-2.0 mass% of oil-insoluble molybdenum dialkyldithiocarbamate, (e) 0.5-3.0 mass% of oil-soluble molybdenum dialkyldithiocarbamate, (f) 1.0-4.0 mass% of zinc dialkyldithiocarbamate, and (g) 0.1-1.5 mass% of benzothiazolethione or a derivative thereof, wherein (f):(g) ranges from 8:1 to 3:1 (mass ratio).
C10N 30/00 - Specified physical or chemical property which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
C10N 50/10 - Form in which the lubricant is applied to the material being lubricated greasy
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 135/18 - Thio-acids; Thiocyanates; Derivatives thereof having a carbon-to-sulfur double bond thiocarbamic type, e.g. containing the groups
C10M 135/36 - Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
55.
RIGID-FILM-COATED OBJECT, MACHINE COMPONENT, AND BEARING
Provided are: a rigid-film-coated object having hydrogen embrittlement resistance and wear resistance and having excellent unsusceptibility to separation; and a machine component and a bearing which include the rigid-film-coated object. The rigid-film-coated object 1 comprises a base 2 and a rigid film 3 for inhibiting hydrogen atoms from infiltrating and diffusing formed on a surface of the base 2, wherein the ratio of the Vickers hardness of the rigid film 3 to the Vickers hardness of the base 2 is 0.90-1.20, the Vickers hardness of the base 2 and the Vickers hardness of the rigid film 3 are 500-1,000 Hv each, and the rigid film 3 is an Ni coating film.
C23C 14/06 - Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
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
In a state in which the joint has a regular operating angle and the axial line of an inner ring 12 is not inclined with respect to the axial line of a leg shaft 32, when a radius of curvature r and a minor axis-major axis ratio b/a at which the contact area between an inner ring inner circumferential surface 12a and a leg shaft outer circumferential surface is minimized are each given as a reference value, the minor axis-major axis ratio b/a is set to the corresponding reference value, and the radius of curvature r is made smaller than the corresponding reference value. In addition, the carbon content in the core part of a tripod member 3 is set to 0.23 to 0.44%, and a hardened layer is formed through carburizing and quenching on the surface of each leg shaft 32 of the tripod member 3. When a Ts torque is defined as 0.3 times a minimum static torsional torque that causes torsional breaking of a shaft 8 coupled to the tripod member 3, the effective hardened layer depth of a hardened layer 16 with a hardness limit of 600 HV is set to be larger than or equal to a shearing stress depth under application of the Ts torque.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
F16C 33/42 - Ball cages made from wire or sheet-metal strips
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
This chain tensioner comprises: a cylinder (9); a plunger (10); a return spring (29) that biases the plunger (10) in a direction of causing the plunger (10) to project from one end of the cylinder (9); a pressure chamber (18) formed in the cylinder (9); a check valve (19) that allows only the flow of oil from inside the plunger (10) to the pressure chamber (18); a leak gap (25) that causes hydraulic oil to leak from the pressure chamber (18); an oil feed passage (28) that introduces oil to inside the cylinder (9) from outside; a communication path (31) formed in the plunger (10) so as to communicate between the leak gap (25) and the inside of the plunger (10); and an air vent structure (14) that discharges air (a) in the plunger (10) to the outside. The air vent structure (14) is provided by being offset upward from the axial center of the plunger (10).
A bearing device comprises: a rolling bearing (30) having a rotating ring (32), a fixed ring (31), and rolling elements (33); a preload-applying member (40); and a sensor unit (60). The rotating ring has a rotating ring raceway surface (32ca) extending along the circumferential direction. The fixed ring has a fixed ring raceway surface (31da) that extends along the circumferential direction and is opposite the rotating ring raceway surface with a gap therebetween in the radial direction. Rolling elements are disposed between the rotating ring raceway surface and the fixed ring raceway surface. The preload-applying member applies a preload to the rolling bearing along the axial direction. The sensor unit has a sensor (63) that is removably attached to either the rotating ring or the preload-applying member, and that senses the rotation state of the rotating ring.
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
In this ball screw 1, balls 7 circulate and move along a series of ball passages having: a spiral main passage 13 which is formed by a male screw groove 11 of a screw shaft 2 and a female screw groove 12 of a nut body 4 in accordance with the relative rotation of the screw shaft 2 and a nut 3; a return passage 14 axially passing through the nut body 4 outside the main passage 13 in a radial direction; a first connection path 15 which connects the main passage 13 to one end of the return passage 14; and a second connection path which connects the main passage 13 to the other end of the return passage, wherein a first end cap 5 which forms the first connection path 15 and a second end cap 6 which forms the second connection path 16 are disposed respectively at positions overlapping the female screw groove 12 in the axial direction.
A snap ring 14 has a cut surface A obtained by shearing. The cut surface A has a shear surface A2 that is provided in a region on the front surface 14d side and a fracture surface A3 that is provided in a region on the back surface 14e side. The front surface 14d of the snap ring14 faces a plurality of needle rollers 13.
F16B 21/18 - Means without screw-thread for preventing relative axial movement of a pin, spigot, shaft, or the like and a member surrounding it; Stud-and-socket releasable fastenings without screw-thread by separate parts with grooves or notches in the pin or shaft - Details
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
This bearing device (1) comprises a bearing (2) and a holding member (12). The holding member (12) is fixed to either an outer ring (3) or an inner ring (4). A circuit board (13) is fixed to a surface (12f) of a side plate section (12A) in an axial direction. At least one gas sensor (SSR) for detecting the state of the bearing (2) and a wireless communication circuit (18) which wirelessly transmits an output of the gas sensor (SSR) to the outside are mounted on the circuit board (130).
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 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
A bearing device (100) comprises: a rolling bearing (10) having an inner ring (11), an outer ring (12), and a rolling body (13); and a generator (20) that generates electricity along with rotation of the inner ring relative to the outer ring. The inner ring has an inner-ring outer diametrical surface (11d). The outer ring has an outer-ring inner diametrical surface (12c). The outer ring is disposed on the outside of the inner ring in a radial direction such that the outer-ring inner diametrical surface faces the inner-ring outer diametrical surface. The rolling body is disposed between the inner-ring outer diametrical surface and the outer-ring inner diametrical surface. The generator has a magnetic ring (30), and a stator (40). The magnetic ring has a multi-pole magnet (32) magnetized to have N-poles and S-poles alternately in a circumferential direction, and is attached to one of the inner ring and the outer ring.
In the present invention, an escape part 36, at which the tooth height of a female spline 34 is reduced, is provided to the inner circumference of the one-side end of a tripod member 3 in the axial direction. B/A>0.28 and C/D>0.23 are set, where: A represents the axial-direction distance from the one-side end surface of the tripod member 3 in the axial direction to a plane R including the axial center of each leg shaft 32; B represents the axial-direction distance from the one-side end surface of the tripod member 3 in the axial direction to the deep-side end P of the escape part 36; C represents the thickness of the tripod member 3 in a radial direction at the deep-side end P of the escape part 36 on an axial-direction cross-section that includes a joint axial center O and an intermediate part 33 and that extends in the tangential direction of a circle about the axis of a corresponding one of the leg shafts 32; and D represents the diameter of a tooth bottom 34a of the female spline 34.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
Provided is a ball bearing in which a strong contact between an inner radial surface of a pocket and a ball can be avoided to reduce rotational torque even when a retaining claw of a crown type cage is deformed by centrifugal force. The ball bearing comprises: an annular portion 30 that has pockets 31 for retaining a plurality of balls 23 at equal intervals in the circumferential direction, and is located on one side in an axial direction of the ball 23; and a plurality of pairs of retaining claws 32 extending from the annular portion 30 toward the other side in the axial direction. The pocket 31 is formed by opposite surfaces of the retainer claws 32 adjacent to each other in the circumferential direction, and one end surface of the annular portion 30 in the axial direction. The pocket 31 is in the shape of a spherical concave surface that holds the ball 23. A recess 33 is formed in an inner radial portion of a bottom surface of the pocket 31.
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
Provided is a crown-shaped cage entirely made of a resin material, in which a diameter D of a steel ball (4) stored in a pocket (9) is 13 to 18 mm, a thickness t from the bottom of the pocket (9) to an end surface of an annular part (5) on another side thereof in an axial direction is 10 to 20% of the steel ball diameter D, and an axial length HB of claws (8a, 8b) of a horn part (6) is 60 to 80% of the steel ball diameter D. When the tensile strength of the resin material is σ, a cross-sectional area A of a portion between adjacent pockets (9) in a circumferential direction is set within a range given by the following expression. A > (511D – 4027) / σ
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
This machine component (10) has surfaces, and is formed from steel that has undergone quenching and tempering. The machine component is provided with a nitrided layer (11) formed on the surfaces (10a, 10b, 10c, 10d). The steel contains 0.95 to 1.10 mass percent carbon, less than 0.30 mass percent silicon, less than 0.50 mass percent manganese, less than 0.0080 mass percent sulfur, and 1.3 to 1.6 mass percent chromium, with the remainder being iron and unavoidable impurities. The average nitrogen concentration on the surfaces is 0.10 mass percent or greater. The hardness of the surfaces is 850 Hv or greater. The amount of retained austenite on the surfaces is 20 volume percent or less.
The present invention is a load sensor that comprises a single sensor member (1), a displacement sensor 2, and a sensor target (3). In a vertical cross-section that runs along a center axis (C) of the sensor member (1) that is parallel to the application direction (F) of a load, the sensor member (1) has a space (S) at which all of 3 and at least a portion of 1 of the (4) directions that are the forward and backward directions that are parallel to the center axis (C) and the forward and backward directions that are orthogonal to the center axis (C) are enclosed by the sensor member (1).
G01L 5/22 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force applied to control members, e.g. control members of vehicles, triggers
B60T 13/74 - Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
F16D 65/18 - Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
A control device (Cu) controls a posture-controlling actuator (10) in a link actuating device (7) in which a tip end member (40) is provided movably by the posture-controlling actuator (10). A parallel link mechanism has a link hub (13) on a tip end side posture-changeably coupled to a link hub (12) on the base end side via three sets of link mechanisms (14). The control device (Cu) includes a parameter switching means (65b) that switches a control parameter so as to adjust jerk of the posture-controlling actuator (10) or the tip end member (40) in accordance with a load acting on the tip end member (40). The parameter switching means (65b) switches a plurality of control parameters including at least one of a filter time constant of a moving-average filter and a model following control gain.
G05B 19/416 - Numerical control (NC), i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control of velocity, acceleration or deceleration
70.
METHOD FOR INSPECTING BALL SCREW DEVICE, INSPECTION JIG, AND INSPECTION DEVICE
For inspection of the number of balls 30 disposed in recirculation paths S1 to S3 of a ball screw device 1, an inspection jig 40 is inserted, from a gap between a nut 10 and a screw shaft 20, into between the balls 30 disposed in the recirculation paths S1 to S3, and the number of the balls 30 is inspected, on the basis of the insertion state of the inspection jig 40 at this time.
F16D 3/2245 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members the rolling members being balls, rollers, or the like, guided in grooves or sockets in both coupling parts the rolling members being guided in grooves in both coupling parts the groove centre-lines of each coupling part lying on a sphere where the groove centres are offset from the joint centre
F16D 3/20 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members
72.
OIL-IMPREGNATED SINTERED BEARING AND FLUID DYNAMIC BEARING DEVICE INCLUDING SAME
A radial dynamic pressure generation unit 11 is formed on an inner circumferential surface 8a of an oil-impregnated sintered bearing 8. The radial dynamic pressure generation unit 11 includes a plurality of inclined dynamic pressure grooves 11a inclined with respect to the circumferential direction of the inner circumferential surface 8a, and a plurality of ridges 11b provided between the inclined dynamic pressure grooves 11a. The ridge 11b includes a diameter reduction portion 13 where the inner diameter dimension of the ridge 11b decreases in the direction from the axial center side toward the axial end side of the inner circumferential surface 8a.
Provided is a ball bearing using a crown type retainer, which has good lubrication performance, and a reduced contact surface pressure between an inner surface of a pocket and a ball, and is capable of further reducing a rotational torque. This ball bearing has a pocket 31 of a retainer 24 for storing a ball 23, the pocket 31 being formed by an annular base part 30, a recessed part 31a provided in the base part 30, and a pair of retaining claws 32 disposed on an opening rim of the recessed part 31a so as to be spaced apart from and face each other. Each of the retaining claws 32 is formed by an outer diameter-side claw part 34 and an inner diameter-side claw part 35 separated on the inner-diameter side and the outer-diameter side with a slit 33 therebetween.
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
Provided is a steering device in which a steering control system automatically operates the steering angle of a vehicle in an automatic driving mode by using an electric signal and in which a driver operates the same in an ordinary driving mode by using a steering member (steering wheel (1)), said steering device being formed from: a steering unit (7) comprising the steering member (steering wheel (1)) and a lock mechanism (clutch (6)) for switching between the locked state and the free state thereof by using an electric signal; and a controller (8) that has the function of a steering control system and controls the lock mechanism (clutch (6)). Additionally, the steering device comprises a function in which, at a time such as when an abnormality in the driver has been detected, the steering member (steering wheel (1)) is put into the locked state by means of a command from the controller (8) while the vehicle is being automatically driven.
B62D 6/00 - Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
B60W 50/14 - Means for informing the driver, warning the driver or prompting a driver intervention
B60W 50/16 - Tactile feedback to the driver, e.g. vibration or force feedback to the driver on the steering wheel or the accelerator pedal
B60W 60/00 - Drive control systems specially adapted for autonomous road vehicles
B62D 5/04 - Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
F16D 27/112 - Magnetically-actuated clutches; Control or electric circuits therefor with an electromagnet not rotating with a clutching member, i.e. without collecting rings with axially movable clutching members with flat friction surfaces, e.g. discs
F16D 41/08 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action
F16H 48/24 - Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
This bearing device (1) comprises: a bearing (2) including an outer ring (6), an inner ring (7) and rolling elements (8); an outer loop (11); a magnetic ring (5); a stator (14) arranged to face the magnetic ring (5); and a circuit board (12). The circuit board (12) includes an acceleration sensor (22) that detects the state of the bearing (2), a temperature sensor (23), and a wireless communication circuit (25) that wirelessly transmits the outputs of the acceleration sensor (22) and the temperature sensor (23) to the outside. The magnetic ring (5) and the stator (14) constitute a claw-pole generator (G). The magnetic ring (5) has a toric shape. The stator (14) has a toric shape. The stator (14) includes a magnetic member (16) having claw portions (16a, 16b) formed thereon, and a coil (18). The circuit board (12) is arranged on the outer loop (11) at a position not overlapping the stator (14) when viewed from the rotation axis direction of the bearing (2).
A sensor-equipped bearing (100, 100A, 100B, 100C) comprises: a bearing (10) including a rotating ring (11), a fixed ring (12), and rolling element (13); and a sensor unit (20). The rotating ring has a rotating ring raceway surface (11da) extending along the circumferential direction. The fixed ring has a fixed ring raceway surface (12ca) that extends along the circumferential direction and is opposite the rotating ring raceway surface with a gap therebetween in the radial direction. The rolling element is disposed between the rotating ring raceway surface and the fixed ring raceway surface. The sensor unit is detachably attached to the fixed ring, and has: a power generating coil (22) that generates an induced voltage as the rotating ring rotates; a sensor (24) that outputs a physical quantity or chemical quantity as an electrical signal; and a wireless communication module (25) that wirelessly transmits the output of the sensor to the outside.
This invention provides a tripod-type constant-velocity universal joint (1) comprising an outer joint member (2) in which three track grooves (5) extending in an axial direction are formed in circumferentially trisected positions around the internal periphery and which has a roller-guiding surface (6) disposed circumferentially facing the track grooves, a tripod member (3) having three leg shafts (7) protruding radially outward from the circumferentially trisected positions, and a roller assembly (4) fitted over the leg shafts, the roller assembly being composed of an inner ring (12) fitted over the leg shafts, a roller (11) fitted into the roller-guiding surface, a plurality of needle rollers (13) disposed between a cylindrical outer peripheral surface (12b) of the inner ring and a cylindrical inner peripheral surface (11b) of the roller 11, and a pair of washers (14, 15) disposed on both axial sides of the needle rollers and the inner ring and attached at the outer peripheral edges to the internal periphery of the roller, the tripod-type constant-velocity universal joint characterized in that φdmax−φdmin ≤ 0.002 mm, where φdmax is the maximum diameter of the needle rollers (13) in each roller assembly and φdmin is the minimum diameter.
F16D 3/205 - Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts one coupling part entering a sleeve of the other coupling part and connected thereto by sliding or rolling members one coupling part having radially projecting pins, e.g. tripod joints the pins extending radially outwardly from the coupling part
Provided is a wheel bearing device that includes an outer sealing member having: a seal lip that is fixed to an outer end of an outer member; and a metal ring that is mated with a hub wheel of an inner member and that is in sliding contact with the seal lip. The wheel bearing device can easily increase the mating force of the metal ring with the hub wheel and can prevent movement of the metal ring when a slewing load is applied to the hub wheel. A metal ring (83) has: a metal-ring cylindrical section (83a) mated with an outer circumferential surface of a hub wheel (3); a metal-ring disk section (83b) located on a radially and axially outer side of the metal-ring cylindrical section (83a); and a tapered connection section (83c) that connects the metal-ring cylindrical section (83a) and the metal-ring disk section (83b) and that is inclined at an angle from 40° to 50° with respect to the axis of the hub wheel (3) in a circumferential cross section.
F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
F16J 15/3256 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
The present invention is configured to have: a first pulley arm (9) that supports a first idler pulley (7) in contact with an accessory belt (6); a second pulley arm (10) that supports a second idler pulley (8) in contact with the accessory belt (6); a swing fulcrum shaft (11) that swingably supports the first pulley arm (9) and the second pulley arm (10); an elastic member (22) that biases the second pulley arm (10) against the first pulley arm (9) to bring the first idler pulley (7) and the second idler pulley (8) closer to each other; and swing resistance members (33, 34) that generate swinging resistance against the first pulley arm (9) and the second pulley arm (10) only in one of the swinging directions thereof, respectively.
An angular ball bearing (1) of the present disclosure is provided with: an outer member (2); an inner member (4); a ball (6) interposed between the outer member (2) and the inner member (4); and a holder (8) that holds the ball (6). The outer member (2) can be attached/detached to/from an assembly component (As) comprising the inner member (4), the ball (6), and the holder (8). The distance (M) in the radial direction from the groove bottom (4aa) of a raceway (4a) in the inner member (4) to a counterbore portion (4b) of the inner member (4) is 0.2-0.7% of the pitch circle diameter (P) of the ball (6). The dimension (Z) in the axial direction of the counterbore portion (4b) of the inner member (4) is 8-20% of the diameter (Dw) of the ball (6). The inner member (4) has, on the outer peripheral surface thereof, a first step (10) that is adjacent to the counterbore portion (4b) and that contracts in diameter from the counterbore portion (b). The height (X) of the first step (10) is 0.1-0.5% of the pitch circle diameter (P) of the ball (6).
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
A bearing device (1) comprises a standard bearing (2) including an outer ring (3), an inner ring (4), and rolling elements (8). The bearing device (1) comprises a magnetic ring (7) fixed to the inner ring (4), a stator (5) disposed so as to face the magnetic ring (7) in the radial direction of the standard bearing (2) and fixed to the outer ring (3), and a circuit board (13). The magnetic ring (7) and the stator (5) form a power generator (G) that generates AC power. The circuit board (13) includes at least one sensor that detects the state of the standard bearing (2), a wireless communication circuit (18), and a power supply circuit (17) that converts the AC power generated by the power generator (G) into DC power. The magnetic ring (7), the stator (5), and the circuit board (13) are disposed in an annular space defined by an end portion of the outer ring (3) and an end portion of the inner ring (4).
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
Provided are a rolling bearing retainer which has excellent heat resistance and with which satisfactory moldability can be realized even when the retainer is thick, and a rolling bearing using said retainer. A retainer 5 is an annular rolling bearing retainer formed by injection molding a resin composition and having a plurality of pockets 6 for retaining rolling elements, wherein the radial-direction thickness of an axial end surface 5a of the retainer 5 is 2.00 mm or greater, the resin composition has a polyamide resin as a base resin, and the polyamide resin is a copolymerized polyamide containing hexamethylene terephthalamide units and hexamethylene adipamide units as structural units.
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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
This roller bearing comprises: an inner member; an outer member; rollers (4, 5) interposed between the orbital planes of the inner member and outer member; and a retainer that retains the rollers (4, 5). The rollers (4, 5) each have a DLC membrane (9) on the outer circumferential surface thereof. The DLC membrane (9) has a three-layered structure consisting of, in order from the substrate side of the rollers (4, 5), a metal layer (9a), an intermediate layer (9b), which is a metal and DLC mixture layer, and a surface layer (9c). An indented section (16) in which a lubricant is retained is provided in the surface layer (9c) of the DLC membrane (9), and the indented section (16) includes a polymer-like carbon. The nanoindentation hardness of the indented section (16) is 13-16 GPa.
F16C 33/66 - Special parts or details in view of lubrication
B32B 3/30 - Layered products essentially comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products essentially having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
B32B 9/00 - Layered products essentially comprising a particular substance not covered by groups
B32B 15/04 - Layered products essentially comprising metal comprising metal as the main or only constituent of a layer, next to another layer of a specific substance
C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
F16C 19/38 - Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
F16C 33/36 - Rollers; Needles with grooves in the bearing surfaces
The present invention provides a wheel bearing device that makes it possible to improve maintainability of the device while preventing limitations on the design of internal geometry. A wheel bearing device 1 comprises: an outer ring 2; double-row inside raceway grooves that face double-row outside raceway grooves provided to the outer ring 2; an inner member (hub ring 3 and inner ring 4) that has a wheel-attachment flange 32; double-row ball rows 5, 6; and a hub bolt 36 that is press-fitted into a bolt hole 35 of the wheel-attachment flange 32. The outer ring 2 has a first outer circumferential surface 27, a second outer circumferential surface 28 that has a smaller diameter than the first outer circumferential surface 27, and a step surface 29 that connects the first outer circumferential surface 27 and the second outer circumferential surface 28. An outer diameter radius dimension R2 of the first outer circumferential surface 27 is larger than an inscribed circle radius R0 of a head part 361 of the hub bolt 36 which has been press-fitted into the bolt hole 35, and an outer diameter radius dimension R3 of the second outer circumferential surface 28 is smaller than the inscribed circle radius R0 of the head part 361 of the hub bolt 36 which has been press-fitted into the bolt hole 35.
B60B 35/14 - Torque-transmitting axles composite or split, e.g. half-axles; Couplings between axle parts or sections
F16C 19/18 - 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 two or more rows of balls
Provided is a vehicle wheel bearing device with which it is possible to further reduce torque in the vehicle wheel bearing device while inhibiting the occurrence of raceway surface flaking. Provided is a vehicle wheel bearing device 1 comprising: an outer ring 2 that has outside raceway surfaces 2c, 2d on the inner circumference thereof; an inner member that has inside raceway surfaces 3c, 4a; ball rows 5, 6 accommodated between the raceway surfaces of the outer ring 2 and the inner member; an inner side sealing member 10 and an outer side sealing member 20 that respectively seal open edges of an annular space 15 formed by the outer ring 2 and the inner member; a first grease G1 that is applied in the annular space 15; and a second grease G2 that is applied inside of the inner side sealing member 10 and in a space surrounded by the outer side sealing member 20 and a hub ring 3, wherein the kinematic viscosity of a second base oil contained in the second grease G2 is less than the kinematic viscosity of a first base oil contained in the first grease G1, and the kinematic viscosity of the first base oil is 20-65 mm2/s (40°C) and the kinematic viscosity of the second base oil is 10-35 mm2/s (40°C).
C10M 171/02 - Specified values of viscosity or viscosity index
F16C 19/18 - 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 two or more rows of balls
F16C 33/66 - Special parts or details in view of lubrication
F16C 33/78 - Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
B60B 35/02 - Dead axles, i.e. not transmitting torque
A bearing device (1) comprises a bearing part (B), a magnetic ring (12), a bearing cap (11), a stator (17), and a circuit board (18). The bearing cap (11) closes an inner-side opening end of an outer member (6). The stator (17) is fixed to the inner surface of the bearing cap (11) so as to face the magnetic ring (12), and forms a generator (G) together with the magnetic ring (12). The circuit board (18) is fixed to the inner surface of the bearing cap (11). The circuit board (18) includes a power supply circuit (23) that rectifies AC voltage of the generator (G), sensors (24, 25) that monitor the state of the bearing part (B), and a wireless communication circuit (26) that wirelessly transmits outputs of the sensors (24, 25) to the outside.
B60B 35/02 - Dead axles, i.e. not transmitting torque
F16C 19/18 - 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 two or more rows of balls
F16C 19/52 - Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 11/35 - Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
H02K 19/24 - Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators with variable-reluctance soft-iron rotors without winding
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
Provided is a cup seal for a compressor that is excellent in mechanical properties such as frictional wear properties and tensile elongation at break. A cup seal 1 for a compressor is used in a reciprocating compressor that has a piston and a cylinder and that compresses gas by reciprocating motion of the piston. The cup seal is fixed to the piston and press-fitted to the inside diameter of the cylinder to create an airtight seal between the piston and the cylinder, and the cup seal is composed of a resin composition. The resin composition contains polytetrafluoroethylene resin as a main component, aromatic polyester resin powder, and carbon fibers having an aspect ratio of 3–15.
F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
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
Provided is a sealing resin composition and a seal which can be used, in particular, with a high-temperature and high-pressure gas, especially hydrogen gas. The sealing resin composition is used in a piston ring 1 that is for sealing a gas. When a molded article of the sealing resin composition is exposed to a gas having a pressure of 82 MPa and a temperature of 200°C for 192 hours, the rate of dimensional changes of the molded article, with respect to the pre-exposure values, is ±1.0% or less, and when the tensile strength of the molded article before exposure is taken to be 100%, the retention rate of the tensile strength after the exposure is 80% or more. The tensile strength of the molded article of the sealing resin composition is 100 MPa or more as determined by a measurement method according to ASTM D638.
C08L 87/00 - Compositions of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
C08L 71/10 - Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
C08L 79/08 - Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
F16J 15/18 - Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
C09K 3/10 - Materials not provided for elsewhere for sealing or packing joints or covers
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
89.
ACCESSORY BELT AUTO TENSIONER, AND ACCESSORY-DRIVING BELT SYSTEM
An accessory belt auto tensioner comprising a swing arm (8), a first tension pulley (14), and a second tension pulley (16), and incorporating a swing reaction force applying mechanism (10) that applies, to the swing arm (8), a swing reaction force in a direction opposite to a swing direction when the swing arm (8) swings, wherein the swing reaction force applying mechanism (10) is constituted by an inner circumferential protrusion (24), an outer circumferential protrusion (27), and a C-shaped spring member (32).
F16H 7/12 - Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
F02B 67/06 - Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
Provided is a clutch unit that offers enhanced freedom in mounting a member that suppresses rotation of a drive shaft to which torque has been transmitted from the output side. This clutch unit comprises: an engagement release part 55 that is supported by an operating plate 42 as an operating tool so as to be able to rotate around an axis line together with the operating plate 42, and that, due to rotation of an operating lever 40, moves a base part 51 and an engagement part 52 and/or a drive shaft-side engagement member 53 as a whole to an engagement position P1 at which the drive shaft-side engagement member 53 and the engagement part 52 are in contact with each other in a state in which the drive shaft-side engagement member 53 is unable to rotate around the axis line with respect to the base part 51 and the engagement part 52, and to a release position P2 at which the drive shaft-side engagement member 53 and the engagement part 52 are separated from each other in a state in which the drive shaft-side engagement member 53 is able to rotate around the axis line with respect to the engagement part 52; and an elastic member 54 positioned between the drive shaft-side engagement part 53 and the base part 51. The elastic member 54 applies, to the drive shaft-side engagement member 53 and the base part 51, an elastic force which is directed toward the engagement position P1 from the release position P2.
F16D 65/16 - Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
F16D 127/06 - Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms
F16D 127/10 - Self-amplifying or de-amplifying mechanisms having wedging elements
F16D 41/067 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
F16D 41/10 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface with provision for altering the freewheeling action with self-actuated reversing
In this grease-filled ball bearing in which a holder claw (15) has a pocket surface (21) facing the surface of a ball (4) and a claw inner-diameter surface (23) that extends from a radially-inner side edge (22) of the pocket surface (21) in the circumferential direction so as to face the outer circumference of an inner ring (1), the claw inner-diameter surface (23) is provided with a grease guiding slope which shifts from the base side of the holder claw (15), radially outward, toward the tip side of the holder claw (15).
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
A shell outer ring (11) includes a cylindrical outer ring body (12), flanges (14) protruding radially inward from both axial ends of the outer ring main body (12), and a rounded portion (16) that joins the outer ring body (12) and the flanges (14) and has a rounded bulging surface on the outer surface. The outer peripheral surface of the outer ring body (12) on the axially outer side is formed into a tapered surface (17) that gradually decreases in diameter toward the axially outer side. The tapered surface (17) smoothly connects with the bulging surface of the rounded portion (16). Regarding a cut surface made by cutting the shell outer ring (11) at a plane including the center axis of the shell outer ring (11), a virtual circle (16c) that overlaps the cross-sectional line of the bulging surface is located on the inner diameter side of the cross-sectional line of the tapered surface (17).
Provided is a ball bearing using a crown-shaped cage that satisfactorily holds and supplies lubricating oil even in an extremely high speed rotation region. By using a crown-shaped cage 24 in which an oil retention groove 31c, 31d conforming to the radially inner edge portion or radially outer edge portion of a spherical recessed surface of a pocket 31 that receives a ball is formed in at least one of the radially outer edge portion and radially inner edge portion, it is possible to hold and supply lubricating oil with the pocket 31 even in an extremely high speed rotation region.
F16C 19/04 - 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
F16C 33/66 - Special parts or details in view of lubrication
The inner circumference of a second rivet hole (12b) in the present invention is formed from a sheared surface (17b) with a constant cylindrical shape in which the inner diameter does not change along the axial direction and a fracture surface (18b) with a tapered shape that gradually expands in diameter from the sheared surface (17b) toward a mating surface (16b).
B21D 53/12 - Making other particular articles valve seats or the like cages for bearings
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 33/42 - Ball cages made from wire or sheet-metal strips
Provided is a vehicle wheel bearing device that, while achieving a reduction in the overall weight of a hub ring, facilitates the insertion of a tool between a pilot section of the hub ring, and a wheel and a brake rotor, thereby preventing dirt, rust, etc., from developing on the hub ring and thus enabling the service life of the hub ring to be prolonged. A hub ring (3) includes a wheel pilot section (3g) that extends further toward an outboard side than a wheel mounting flange (3b), and that guides the radially-inner surface of a wheel. The wheel pilot section (3g) has formed, in an outer circumferential surface thereof, a recess (3h) having a depth of 1-3 mm.
F16C 19/18 - 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 two or more rows of balls
The present invention provides: a silicon nitride sintered body that has good mechanical properties and has good product life when processed into a product; a machine component using the same; and a bearing. The silicon nitride sintered body is such that: the crystallinity obtained by the formula below from an XRD diffraction pattern of a mirror-polished cross section is 75 to 90%; an amorphous phase includes one or more elements selected from the group consisting of Y, Ce, Nd, and Eu; and in a surface layer, inclusions having a diameter of greater than 50 μm are not present, and pores having a diameter of greater than 50 μm are not present. Crystallinity (%) = crystalline peak area/(crystalline peak area + amorphous peak area) x 100
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
Provided are a retainer for a bearing device and a bearing device for a wheel provided with said retainer, with which deformation and breakage of a column part at the time of mold release can be prevented and grease can be easily allowed to flow around rolling elements when the bearing rotates. This retainer (retainer (7)) for a bearing device comprises: an annular part (7a) formed in an annular shape; a plurality of column parts (7b) extending axially outward from the annular part (7a) at regular intervals in the circumferential direction; and pockets (Pt) that have pocket curved surfaces (axially inward curved surfaces (7g) and axially outward curved surfaces (7k)), which are curved surfaces formed by adjacent column parts (7b) and the annular part (7a) so as to extend along the outer peripheral surfaces of balls (8), and that holds the balls (8), wherein on the outer-diameter sides with respect to curvature center positions (P) of the pocket curved surfaces ((7g) and (7k)), the column parts (7b) have linear shapes of which the axially inner sides extend in the axial direction, and on the inner-diameter sides with respect to the curvature center positions (P) of the pocket curved surfaces ((7g) and (7k)), the column parts (7b) have linear shapes of which the axially outer sides extend in the axial direction.
F16C 19/18 - 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 two or more rows of balls
GEL SHEET CHIP, METHOD FOR MANUFACTURING GEL SHEET CHIP, SAMPLE COLLECTING METHOD, GEL PLATE, SAMPLE COLLECTING SET, CULTURE IMPLEMENT, AND METHOD FOR MANUFACTURING CULTURE IMPLEMENT
A gel sheet chip (6) comprises a film (2), a frame (3), a gel (4D), and a sample (4B) to be collected. The frame (3) is placed on the film (2), and has a through-hole (3A) formed therein. The gel (4D) is arranged in the through-hole (3A) on the film (3). The sample (4B) to be collected is supported by the gel (4D).
2610481212 of the coil wire CL for connecting the coils of different phases to each other are connected to connection terminals 8a, 8b, and 8c of a neutral point bus bar 8, respectively, to form a star-connected motor drive circuit 20.
Provided is a wheel bearing device capable of improving indentation resistance at the outer side of an outer member by reducing a quenching crack and deterioration in crystal grain size as much as possible. The outer member (outer ring (2)) is to have an inner-side induction-hardened part (9a) formed by means of induction hardening along an inner-side outer raceway surface (2g) and an outer-side induction-hardened part (9b) formed by means of induction hardening along an outer-side outer raceway surface (2h), wherein the outer-side induction-hardened part 9b has a deeper hardened layer depth (D) than the hardened layer depth E of the inner-side induction-hardened part (9a), and the inner-side induction-hardened part (9a) and the outer-side induction-hardened part (9b) are separated from each other.
C21D 9/40 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for bearing races
F16C 19/18 - 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 two or more rows of balls
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