Wheel hub, also known as rim, is a barrel shaped metal part. The center of the tire is installed on the axle, and the wheel hub decorative cover is generally fixed in the center of the wheel to beautify the appearance of the wheel and protect the wheel and the central hub. At present, a part of the wheel hub decoration cover structure is directly fixed and welded on the wheel. Today's editor will take you to understand the benefits brought by the use of aluminum alloy wheel hub.

　　The connection will damage the surface finish of the wheel, the operation is complex, and the connection quality can not be guaranteed; the other part is the wheel hub trim cover, the mounting hole on the wheel hub is fixed on the wheel hub, for example, the decorative cover is installed on the wheel rim surface through the pawl, although the operation is simple, the installation size cannot be adjusted.

　　The aluminum alloy wheel hub includes a wheel hub body, the middle part of the wheel hub body is provided with an installation groove, the bottom of the installation groove is provided with a central hole which is nested with the wheel axle, the edge of the installation groove is provided with a step hole, and the step hole is arranged in the step hole of the decorative cover, and the snap ring on the side close to the outer surface of the wheel hub body is arranged in the center hole of the wheel hub body.

　　The decorative cover includes a decorative surface matched with the external shape of the wheel hub body and an installation surface located in the interior of the wheel hub body. The outer side of the lower end of the belt buckle is provided with a protuberance, and the inner side of the lower end of the buckle is provided with an adjusting groove corresponding to the protrusion.