Patent ID: 9102196
Filing Date: 2015-08-11
Classification: B60B,F16C,F16J

Abstract:
1. A vehicle wheel bearing apparatus comprising: an outer member to be fit into a knuckle, forming a vehicle suspension apparatus, the outer member inner circumference including double row outer raceway surfaces; an inner member formed, on its outer circumference, with inner raceway surfaces that oppose, respectively, one of the double row outer raceway surfaces; double row rolling elements are freely rollably contained between the inner raceway surfaces and the outer raceway surfaces of the inner member and the outer member; seals are mounted within annular openings formed between the outer member and the inner member; the inner-side seal of the seals comprises an annular slinger and a sealing plate, the annular slinger comprising a cylindrical portion and a standing portion, the cylindrical portion is press-fit onto the inner member and the standing portion extends radially outward from the cylindrical portion, the sealing plate comprises a metal core and a sealing member, the metal core is press-fit into the inner circumference of an end of the outer member, the sealing member integrally adhered to the metal core, via vulcanizing adhesion, the sealing member has a pair of side lips angularly extending radially outward, the sealing member is adapted to be in sliding contact with the standing portion of the slinger, via a predetermined axial interface; the sealing member is secured to the metal core while extending over the outer circumference of the end of the metal core; and the sealing member is formed with an outer circumferential lip that extends radially outward from its circumferential end, the outer circumferential lip has a substantially L-shaped longitudinal section and is adapted to fit in a gap between the inner-side end of the outer member and a flange portion of the knuckle such that a tip end portion of the outer circumferential lip and a lip apex of the outer circumferential lip elastically contact, via predetermined interferences after assembly of the wheel bearing apparatus onto the knuckle, with two points, respectively, an outer circumference of the outer member and a flange of the knuckle, to surely prevent bulging out of the outer circumferential lip from the knuckle such that a tip end portion of the outer circumferential lip rest on an outer circumference of the outer member.