Patent ID: 7686517
Filing Date: 2010-03-30
Classification: B60B,F16C,F16J,G01P

Abstract:
1. A wheel bearing apparatus for a driving wheel comprising: a unit of a wheel hub, a double row rolling bearing and a constant velocity universal joint, said double row rolling bearing further comprising an outer member integrally formed, on its outer circumference, with a body mounting flange, said body mounting flange to be mounted on a knuckle, said outer member inner circumference includes double row outer raceway surfaces; an inner member including the wheel hub and an outer joint member of the constant velocity universal joint, said wheel hub having a wheel mounting flange formed integrally at one end, a cylindrical portion axially extends from the wheel mount flange, an inner raceway surface is formed on an outer circumference of the cylindrical portion, the inner raceway surface corresponds to one of the double row outer raceway surfaces, the outer joint member is formed, on its outer circumference, with another inner raceway surface corresponding to the other of the double row outer raceway surfaces, a hollow shaft portion axially extends from said another inner raceway surface of said outer joint member to be inserted into the wheel hub; double row rolling elements are rollably arranged between the outer and inner raceway surfaces; seals are mounted in annular space openings formed between the outer member and the inner member at their opposite ends; the wheel hub and the outer joint member are integrally connected via plastic deformation by plastically deforming the shaft portion of the outer joint member to bite into the wheel hub; a sensor is radially passed and fit in a mounting aperture formed in the knuckle; and a pulser ring is mounted on an inner side of the bearing apparatus from the inner annular space on the outer circumferential surface of an outer joint member of the constant velocity universal joint so that it opposes the sensor via a predetermined radial gap, an outer diameter of the pulser ring is smaller than an inner diameter of the knuckle and the outer diameter of the constant velocity joint is smaller than the inner diameter of the knuckle.