Automobile buckle (also known as fastener) is a mechanism used for embedded connection or integral locking of one part with another part, usually used for the connection between plastic and plastic, or the connection between plastic and metal. If it is a metal-to-metal connection, there is generally no need for a buckle. The reason why clips are selected for connection during vehicle assembly is that the process of clipping is very simple, and a well-designed clipping process hardly requires auxiliary tools.