摘要:
A hub unit having a sensor comprises a hub unit 1 having a wheel-side raceway member 4, a body-side raceway member 5 and two rows of rolling bodies 6, and a sensor device 2 provided on the hub unit 1. The body-side raceway member 5 has a cylindrical portion 16 and a flange portion 17 provided with an insertion hole for a bolt for fastening the hub unit 1 to a vehicle body. The sensor device 2 has a magnetic sensor 31 supported by a support member 33 fixed to the flange portion 17 and serving as a displacement sensor for detecting variations in the distance between the sensor and the cylindrical portion 16. A magnetized portion 34 is provided on the cylindrical portion 16 at a location opposed to the sensor.
摘要:
A hub unit is configured such that nitrogen gas, which functions as inert gas, is filled in a rolling element arranging space which is defined by an inner circumferential surface of an outer ring and an outer circumferential surface of a hub wheel for arranging rolling elements therein in such a manner as to be sealed therein in a semi-hermetically closed state by a seal member and a cover, so as to prevent the nitrogen gas from flowing out to an exterior space. The seal member, which is provided at an end portion of the rolling element arranging space which end lies on a vehicle-outer side, is formed as an elastic seal element, and is fixed to the outer ring at one end whereas being secured to the hub wheel at the other end thereof while being elastically deformed, whereby the seal member has a function to prevent the intrusion of water from the exterior space into the rolling element arranging space. This seal member prevents the inert gas filled in the rolling element arranging space from flowing out to the outside.
摘要:
A sensor-equipped hub unit comprises a hub unit 1 having a wheel-side raceway member 4, a body-side raceway member 5, and two rows of rolling bodies 6, and a sensor device 2 provided on the hub unit 1. The sensor device 2 has a magnetostrictive sensor 31 for detecting a reverse magnetostrictive effect of the raceway member 4 produced by a force exerted thereon by the rolling bodies 6. The sensor device 2 detects rotation from the number of repetitions of a variation in strain and also detects the force acting on the wheel-side raceway member 4 from the amplitude of strain.
摘要:
An inner race 5 is retained by a crimped portion 30, so that a pre-load is applied to rolling elements 6. A bearing unit for wheel support 1 is connected to a constant velocity joint 2 through tightening of a nut 24. By regulating the tightening force of the nut 24, at the area of contact between the inside end of the crimped portion 30 and the outside end of the outer ring of the constant velocity joint 14, the load per unit length is controlled up to 125 N/mm, or the surface pressure is controlled up to 1.5×108 Pa. Consequently, a bearing unit for wheel support is realized at a low cost with the pre-load securely applied, preventing unpleasant noise from occurring during operation, and preventing play due to plastic deformation.
摘要:
A bearing device in which a rolling bearing is fitted on one axial end of a shaft and in which the one axial end of the shaft is caulked to fix the rolling bearing while preventing the same from coming out. The shape of the outer end face of the caulked portion is devised to maximize the resistance to the coming-out by the caulked portion.
摘要:
A bearing device in which a rolling bearing is fitted on one axial end of a shaft and in which the one axial end of the shaft is caulked to fix the rolling bearing while preventing the same from coming out. The shape of the outer end face of the caulked portion is devised to maximize the resistance to the coming-out by the caulked portion.
摘要:
A wheel bearing device, in which a swaged portion of a wheel hub abuts against a shoulder portion of a joint outer ring, is provided to positively prevent a stick slip noise from being generated at the time of the vehicle being pulled away from a parked position. The wheel bearing device includes an outer ring having double rows of race surfaces formed on its inner circumference; a wheel hub having one of the double rows of race surfaces formed on its outer circumference; an inner ring press-fitted over a reduced diameter step portion of the wheel hub and having the other of the race surfaces formed on its outer circumference; and double rows of rollers interposed on the respective race surfaces between the outer ring and the wheel hub and between the outer ring and the inner ring. The wheel bearing device is configured such that an end portion of the reduced diameter step portion of the wheel hub is swaged to thereby integrate the wheel hub with the inner ring, and a joint outer ring of a constant velocity universal joint is fitted into an inner diameter of the wheel hub via torque transmission means, allowing the swaged portion of the wheel hub to abut the shoulder portion of the joint outer ring. The swaged portion of the wheel hub is left non-quenched, whereas the surface-hardened abutted portion of the shoulder portion of the joint outer ring has a surface roughness of Ra 5.0 or more.
摘要:
Both end portions in an axial direction of a hub 8b are supported by a supporting portion of a working apparatus rotatably centering on a center axis of the hub 8b and in a state of restraining a displacement thereof in a radial direction. Further, before removing the hub 8b from the supporting portion from the state, an outer side face 28 of an attaching flange 13 and a first inner ring track 14 are worked to predetermined shapes. Thereby, judder in braking is prevented from being brought about by promoting a perpendicularity of the outer side face 28 of the attaching flange 13 provided to the hub 8b relative to a rotational center of the hub 8b and restraining a deflection of a rotor coupled to fix to the outer side face 28.
摘要:
At a surface opposite to a mounting surface 28 at a part of the mounting flange 13, a projecting part 27 is provided so as to surround the opening part of the mounting holes 23 for press-fitting each stud thereinto. A finishing process of the mounting surface 28 is carried out after the stud 24 is press-fitted into the mounting hole 23.
摘要:
A wheel assembly includes spaced first and second lateral supports. The first lateral support includes a first mount and the second lateral support includes a second mount that is axially aligned with the first mount. All space between the first mount and the second mount is devoid of any structural component that directly interconnects the first and second lateral supports. The wheel assembly also includes a circumferential rim structure that is adapted to support a tire. The first and second lateral supports attach to the rim structure at first and second locations, respectively, that are radially spaced from the first and second mounts, respectively. Vehicles and swing-arm assemblies including exemplary wheel assemblies are also provided.