Patent ID: 8382378
Filing Date: 2013-02-26
Classification: B60B,F16C,F16D

Abstract:
1. A wheel bearing device including an outer member having a plurality of outer raceway surfaces on an inner periphery, a plurality of inner raceway surfaces opposing the outer raceway surfaces, a plurality of rows of rolling elements disposed between the opposing outer raceway surfaces and inner raceway surfaces, a hub wheel adapted to be attached to a wheel, and a constant velocity universal joint, in which a stem shaft of an outer joint component of the constant velocity universal joint fitted into a hole section of the hub wheel is integrated with the hub wheel by a projection and recess mating structure, wherein: the projection and recess mating structure includes a projection extending in an axial direction and provided on one of an outer diameter surface of the stem shaft of the outer joint component and an inner diameter surface of the hole section of the hub wheel, and a recess provided on another of the outer diameter surface of the stem shaft of the outer joint component and the inner diameter surface of the hole section of the hub wheel and mating in close contact with an overall recess mating area, the recess mating area being an area of the projection extending from a halfway section to a peak of a peak-shaped cross-section.