摘要:
An in-wheel motor drive assembly (11) includes a motor unit that drivingly rotates a motor-side rotating member, a speed reduction unit that reduces the rotational speed of the motor-side rotating member and transmits the reduced rotation to a wheel-side rotating member, a wheel hub (26) that is fixedly coupled to the wheel-side rotating member, a wheel hub bearing that rotatably supports the wheel hub (26), a casing (12) that covers the motor unit, the speed reduction unit, and the wheel hub bearing, a plurality of sensors (43) that are mounted on the casing (12) and capable of detecting strain generated in the casing (12), and a signal processor (46) that calculates load imposed on a wheel on the basis of strain signals output from the sensors (43).
摘要:
A wheel mounting structure relates to a structure for fixing the wheel to the wheel hub which includes a substantially cylindrical spigot joint part protruding from the hub axle part toward the vehicle body outer side with respect to the flange part. In the spigot joint part, the first cylindrical outer peripheral surface and the groove are formed. The annular protruding part is provided so as to protrude toward the center of the wheel from the inner peripheral surface of the center hole. In a state where the wheel is fixed to the flange part using the fastening members, the fitting part and the annular protruding part fit with each other. In a state where the fastening members are removed, the annular cylindrical protruding part is engaged with the groove.
摘要:
In order to achieve a structure that can ensure sufficient sealing performance of a cap (19a), in a state in which a bottomed cylindrical fitting core (44) made from a non-magnetic material is fixed radially inside of a cap cylindrical portion (22a) which configures a bottomed cylindrical cap main body (20a) made from a synthetic resin, an axial outer end opening of a through-hole (25a) formed in the cap bottom (23a) of the cap main body (20a) is closed by the axially inside surface of the core bottom (48) of the fitting core (44). Then, the outer peripheral surface of the core cylindrical portion (47) of the fitting core (44) is directly fitted inside of, and fixed to, the inner peripheral surface on the axially inside end of an outer ring (2).
摘要:
The provided ball bearing unit for supporting a wheel is equipped with: a bearing unit which has an outer race member, an inner race member, and multiple rolling bodies disposed therebetween in a freely rollable manner, wherein one of the outer race member and the inner race member is a stationary-side race member which does not rotate when in use, and the other is a rotating-side race member which rotates with the wheel; a power generator having a stator and a rotor, and generating electric power to be supplied to a sensor disposed on the wheel on the basis of relative rotation of the stator and the rotor; a battery for storing the electric power generated by the power generator; and a radio communication unit for radio communication of signals, including an output signal of the sensor, with an electronic device disposed on the vehicle side. The stator is supported on and fixed to the stationary-side race member, and the rotor, the battery, and the radio communication unit are supported on and fixed to the rotating-side race member.
摘要:
The present invention provides a hub bearing, made of carbon steel for machine structural use, which has a long life even in a strict lubricating condition by improving the resistance to peeling starting from the surface. A grease for the hub bearing contains a base oil, a thickener, and an organozinc compound which is at least one compound selected from dithiozinc carbamate and dithiozinc phosphate. The base oil is a mineral oil or a mixed oil of a mineral oil and a synthetic hydrocarbon oil. The thickener is a urea compound shown by the following formula (1) and is contained at 1 to 40 mass % for the entire grease. The grease for the hub bearing is enclosed in the hub bearing. (In the formula (1), R 2 indicates an aromatic hydrocarbon group having 6 to 15 carbon atoms, and R 1 and R 3 indicate at least one hydrocarbon group selected from an alicyclic hydrocarbon group and an aromatic hydrocarbon group.)
摘要:
A sealing assembly (1) including at least one first annular shield (10) having a sleeve portion (15) integral in use with a rotating member (4) and a flange portion (16), which radially and overhangingly extends from the sleeve portion (15); preferably, a second annular shield (11) is arranged in front of the first shield with the interposition of an annular seal (9); wherein the sleeve portion of the first shield is delimited by a conic-truncated lateral mounting surface (21) having a tapering facing so as to have a greater diameter arranged on the side of the flange portion and intended to couple in use with a mounting seat of the rotating member formed by a shallow recess (25) delimited by a conic-truncated bottom wall (26) having the same tapering as the lateral mounting surface and by an axial shoulder (27) which is arranged on the side opposite to the flange portion.
摘要:
Provided are a face spline forming apparatus and a face spline forming method, with which fluctuation of an inner diameter of a cup section can be suppressed and a face spline can be formed stably. An outer joint member formed by the face spline forming apparatus and the face spline forming method, and a constant velocity universal joint using the outer joint member thus formed are proposed. The face spline forming apparatus comprises: a punch member (50) having a tooth portion (62) for forming a face spline (28); a pedestal (53) having an end-surface receiving surface (52) for receiving an opening end surface (51) of a cup section (7); and a shaft member (57) having an inner-surface receiving surface (56) for receiving a bottom-wall inner surface (55) of the cup section (7). The opening end surface (51) and the bottom-wall inner surface (52) are brought into a simultaneous pressure receiving state. In this state, the punch member performs rocking motion to form the face spline (28) in a bottom-wall back surface (26a) due to plastic deformation caused by the tooth portion (62) of the punch member (50).
摘要:
Disclosed are a drive wheel bearing and a method of manufacturing the same. The drive wheel bearing includes: a wheel hub which is integrally and rotatably fastened to a vehicle wheel; an inner race which is fitted with the wheel hub and integrally and rotatably coupled to the wheel hub; an outer race which rotatably supports the wheel hub and the inner race in a state in which the wheel hub and the inner race are fitted into the outer race; rolling elements which are interposed between the outer race and the wheel hub and between the outer race and the inner race; and a constant velocity joint which is integrally and rotatably connected to the wheel hub or the inner race by means of a face spline in order to receive power from an engine and transmit the received power to the vehicle wheel, in which the face spline of each of the wheel hub and the constant velocity joint have a structure in which teeth having the same size and tooth grooves having the same size radially extend, and are alternately and continuously arranged in a circumferential direction, and as a result, it is possible to smoothly transmit rotational power of the engine to the vehicle wheel through the wheel bearing.
摘要:
There is provided a method capable of producing a wheel-supporting rolling bearing unit at low cost. In an event of producing a wheel-supporting rolling bearing unit (1), a cylindrical portion (11) formed in an axial end portion of a hub ring (2) is inserted through an inner ring (3), swing caulking is performed by pressing a die (23) against a tip end portion of the cylindrical portion (11) protruding to an axial end portion side more than the inner ring (3), and an axial end surface (3a) of the inner ring (3) is held by a caulked portion (12) formed by caulking and expanding the tip end portion of the cylindrical portion (11) radially outward. In such a way, the inner ring (3) and the hub ring (2) are fixed integrally witch each other. At this time, a swing angle of the swing caulking is set at 15 degrees or more to 30 degrees or less.