carhubThe inner ring of the unit bearing is easy to slide axially. At present, there are a large number of threads for fixing and locking structures. SomeCar wheelsThere are threads on the flange neck of the bearing unit, and the nut locking method is relatively difficult, and the locking is difficult. Some automobile hub bearing units use a variety of nylon self-locking and auxiliary locking pin methods, but this makes the structure complex and difficult to assemble.
Provided is a wheel hub bearing unit locked by locking screws, which solves the problem that the inner ring of the existing wheel hub bearing unit is difficult to lock and is easy to slide axially. The wheel hub bearing unit includes bearings and flanges.
There is a step on the neck of the flange, the bearing sleeve is on the surface of the outer ring of the flange, one end of the inner ring of the bearing is close to the step, an internal thread is provided on the center hole of the flange, and a locking screw is provided on the internal thread, the structure is not very complex.
The central thread of the inner ring of the bearing is used to compress the anti-loosening thread of the inner ring of the bearing. The anti-loosening screw can effectively prevent the loosening of the screw structure and make the inner ring of the bearing loose, thereby improving the service life of the hub bearing and playing the role of axial pre-tightening and anti-loosening role.