Patent ID: 8210750
Filing Date: 2012-07-03
Classification: B60B,F16C,G01P

Abstract:
1. A vehicle bearing assembly, comprising: a rotary member comprising a wheel attachment portion on an outboard side of the rotary member; a stationary member that is fixed to a vehicle body side; a rolling element that is rotatably disposed between the rotary member and the stationary member; a detection object that rotates together with the rotary member; a cover attached to an inboard side of the stationary member, the cover comprising a sensor mounting hole; a rotational speed sensor that is inserted in the sensor mounting hole and that faces the detection object with a prescribed gap between the rotational speed sensor and the detection object; and an O-ring disposed between an inner peripheral surface of the sensor mounting hole and an outer peripheral surface of the rotational speed sensor, wherein a chamfered portion is formed along an edge of an opening of the sensor mounting hole on an outer face of the cover, wherein a chamfer edge portion is formed as a boundary between the inner peripheral surface of the sensor mounting hole and the chamfered portion, the chamfer edge portion having a depth in an axial direction of the sensor mounting hole, wherein the chamfer edge portion comprises a first portion and a second portion, and wherein the first portion and the second portion are formed at different locations in both a circumferential direction and the axial direction of the sensor mounting hole.