US Patent 7118406 Socket connecting structure

A socket connecting structure includes a connecting portion disposed on a suspension element and a stub extending from the connecting portion, wherein the stub is connected to a socket. The stub has a resilient stick formed on one side thereof and a spring formed within the stub. The spring has one end connected to an inner periphery of the stub and abuts a back of the resilient stick to provide a thrust to the resilient stick for connecting the socket when the resilient stick is worn out.