Patent ID: 9090122
Filing Date: 2015-07-28
Classification: B60B,F16C

Abstract:
1. A vehicle wheel bearing apparatus comprising: an outer member formed with a body mounting flange on its outer circumference, the body mounting flange to be mounted on a knuckle, and the outer member inner circumference including double row outer raceway surfaces; an inner member includes a wheel hub and an inner ring, the wheel hub is formed, on its one end, with a wheel mounting flange for mounting a wheel, a cylindrical portion axially extends from the wheel mounting flange, the inner ring is press-fit onto the cylindrical portion of the wheel hub, the inner member is formed with double row inner raceway surfaces on its outer circumference, the double row inner raceway surfaces opposes the double row outer raceway surfaces; double row rolling elements are freely rollably contained between the outer raceway surfaces of the outer member and the inner raceway surfaces of the inner member; and seals are mounted within annular openings formed between the outer member and the inner member; the outer-side seal of the seals comprises a metal core and a sealing member, the metal core including a cylindrical portion, a radially inner portion and a disk portion, the cylindrical portion is press-fit onto the outer-side end inner circumference of the outer member, the radially inner portion is bent and extends radially inward from the cylindrical portion, the disk portion extends radially outward from the cylindrical portion and is adapted to contact an outer-side end face of the outer member, the sealing member is integrally adhered, via vulcanized adhesion, to the radially inner portion of the metal core; and the sealing member comprises an integrally formed side lip and weir portion, the side lip is inclined radially outward and adapted to slidably contact an inner-side base portion of the wheel mounting flange, via an axial interference, the weir portion of the sealing member has a terminal end surrounding an end of the disk portion, the terminal end has a pair of opposing parallel sides that define planes that extend radially away from the outer circumference of the outer member and the weir portion is formed around the outer circumference of the radially extending disk portion of the metal core to cover faces of the radially extending disk portion and to adhere to the metal core, the weir portion projects radially outward from the outer circumference of the outer-side end of the outer member and elastically contacts the outer circumference of the outer member.