Hub bearing unit

Abstract

The invention relates to a fourth-generation hub bearing unit which is capable of generating rotation-adapted transformation. The invention solves the problem that the weight is increased because of the enlarged size of the hub which is caused by the integrated structure of the wheel hub and a constant-velocity universal joint. The invention is characterized in that a rear end step of a long end shaft neck of a ring flange is fixed with a bell-like shell and supports against an internal ring, the tail end surface of the long end shaft neck is set into rolled edge which envelops the bell-like shell; the bell-like shell is internally provided with a constant-velocity driving shaft double offset universal joint, the bell-like shell is an external supporting ring of the constant-velocity driving shaft double offset universal joint, the internal wall of the bell-like shell is provided with axial rolling ways, and the constant-velocity driving shaft double offset universal joint is capable of rotating along the axial rolling way. The bell-like shell and the ring flange are individually arranged, the small diameter end of the bell-like shell is arranged to directly lock the step at the tail end of the long end shaft neck and to support against the internal ring so as to reduce the size and the weight of the ring flange, therefore, miniaturization is achieved, and the installation is more reasonable.

Description

technical field [0001] The invention relates to a wheel hub unit, in particular to a wheel hub bearing unit capable of producing rotation adaptive deformation. Background technique [0002] The wheel hub bearing unit used in automobiles has undergone several generations of evolution. The third-generation wheel hub bearing unit is connected to the inner wall of the bearing unit with the axis of the wheel shaft. The wheel shaft and the wheel hub bearing unit are fixedly connected. Relative movement, the relative movement between the hub bearing unit and the vehicle body is realized through the external bearing on the hub bearing unit, so the driving wheel or the non-driving wheel will transmit the vibration to the hub bearing unit, which will easily cause relatively large vibration of the bearing unit, and will also Focus the vibration. [0003] So the hub bearing unit has made new research, a patent named constant velocity universal joint hub unit, its announcement number is...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the disadvantages in the prior art that due to the integrated structure of the wheel hub and the constant velocity universal joint, the size of the wheel hub increases and the weight increases, so that the vibration frequency of the wheel hub increases and is close to the vibration frequency of the vehicle, which causes the vehicle to vibrate easily, and provides a wheel hub Separated from the constant velocity universal joint, the size of the hub is reduced, the weight of the hub is reduced, and the fourth-generation hub bearing unit that expands the span between the vibration frequency of the hub and the vibration frequency of the vehicle, this structure abolishes the hub spline shaft, making It is more miniaturized and more reasonable to install

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