Vehicle wheel hub assembly

Abstract

The invention discloses a vehicle wheel hub assembly. A bearing outer ring and a bearing guard of a wheel hub inner cavity are in interference fit; the outer side of the bearing guard is provided with an annular boss used for spacing the outer end surface of a bearing; the inner side of the bearing guard is provided with a circular-ring groove for containing a jump ring; after the jump ring is sheathed in the circular-ring groove, the inner side end surface of the bearing is spaced; the bearing outer ring and the wheel hub are fixed into a whole; a shaft neck of a knuckle passes out of a bearing inner ring and is in transition fit with the bearing inner ring; after a locating boss of the inner hole of a locating check ring is clamped into an axial groove on the knuckle, the bearing inner ring is fit with the locating boss; a locking nut is screwed and locked; the bearing, the wheel hub and the locating check ring are fixedly arranged on the knuckle; and the locking nut is locked to prevent the locking nut from rotating and loosening. According to dual insurances of pulling force generated by the transition fit and spacing structures on two ends of the bearing, the phenomenon that the vehicle is loosened or wheels fly off due to huge lateral force during vehicle movement is avoided. When a brake disc is replaced, the bearing, the wheel hub and the brake disc can be easily removed from the knuckle, and the service life of the bearing is not affected.

Description

technical field [0001] The present invention relates to a front suspension and a front axle structure of a vehicle, more precisely, to a wheel hub structure of a vehicle. Background technique [0002] At present, there are still many front axle hub units using two single-row roller bearing structures in the domestic market. Almost all commercial vehicles use this structure, and many passenger cars also use this structure. The service life of the hub unit of this structure is generally about 40,000 kilometers. After the brake is worn out, the bearing must be removed at the same time when the brake is replaced, and the old bearing is often no longer used. The service life of the hub unit of this structure is relatively short. At the same time, when this structure is produced and assembled, the requirements for clearance adjustment are relatively high. If the repairman does not grasp the scale of the clearance during maintenance, the bearing will be easily ablated and fail. Fr...

AI Technical Summary

Problems solved by technology

The structure of the first generation is a double-row roller bearing, or the bearing and the hub are used together, while the bearing outer ring of the second, third and fourth generation hub units are integrated with the hub, which is a bearing unit, because the hub of this hub unit and Bearing steel is required for the outer ring of the bearing, so the cost is very high. For slightly larger vehicles, the index circle of the wheel bolts is larger, and the cost is too high. At the same time, the structure of the second-generation, third-generation, and fourth-generation hub units can only be mass-produced to 100,000. Therefore, although the second, third and fourth generation wheel hub units combine the outer ring of the bearing with the front wheel hub and even the steering knuckle, they are only suitable for large-volume passenger cars.

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