Bearing device for wheel, method of assembling bearing device for wheel, assembly constructed from bearing device for wheel and from drive shaft, and method of assembling assembly

Abstract

The present invention provides a wheel bearing device, a method of assembling the wheel bearing device, an assembly configured by the wheel bearing device and a drive shaft, and a method of assembling the assembly, in which the wheel bearing device eliminates a nut tightening operation, is capable of reducing costs, and has a projection and recess mating structure that can firmly connect an outer joint member and a hub. Axial direction load is applied to a stepped surface 56 provided on an outer diameter surface of an outer joint member. A projection that extends in the axial direction and is provided on one of a stem shaft 9b of the outer joint member and an inner diameter surface of a hole section 29 of a hub 4 is press-fitted into a partner member along the axial direction, As a result, a recess that is in close contact with the projection over an overall mating contact area 45 is formed in the partner member, thereby configuring a projection and recess mating structure M.

Description

Technical field [0001] The present invention relates to a bearing device for a wheel, a method for assembling the bearing device for a wheel, an assembly composed of a bearing device for a wheel and a drive shaft, and an assembly method for the assembly. Background technique [0002] Transmit the power from the engine to the drive shaft that drives the wheels, such as Picture 11 As shown, there is a fixed type constant velocity universal joint 104 in which the outboard side (the outer side of the vehicle is formed when assembled on the vehicle) by an intermediate shaft that is not shown in the figure, and the inboard side (the side of the vehicle is formed when assembled on the vehicle. The structure of the sliding type constant velocity universal joint (not shown) on the inner side. The constant velocity universal joint 104 on the outboard side is coupled to a hub 102 rotatably supported by a wheel bearing device. [0003] The third-generation wheel bearing device is provided wit...

AI Technical Summary

Problems solved by technology

Therefore, the outer end surface of the outer joint member cannot be pressed against, and stable press-fitting is difficult.

In addition, when a pressing force is applied to the shaft end surface of the outer joint member of the outboard constant velocity universal joint, the area of ​​the pressing portion is small, the application of pressing force (pressing force) is unstable, and the pressing force is applied It will cause damage to the internal components (inner wheel, box body, ball) of the constant velocity universal joint

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