WATERPROOF STRUCTURE OF SOCKET CONNECTOR

A waterproof structure of a socket connector includes a waterproof housing, a socket, a cable, and a waterproof plug. The waterproof housing includes a wiring opening. The inner surface of the waterproof housing incudes a ring step surface facing the wiring opening. The wiring opening is covered by an end cap. The socket is received in the waterproof housing. The cable is connected to the socket and passes the wiring opening. The waterproof plug wrapping the cable is arranged in the wiring opening to close the wiring opening. The waterproof plug has an inner and an outer end, the inner end faces the socket, and a longitudinal annular rib is arranged on the inner end. The end cover is fastened to the waterproof housing along the longitudinal direction of the waterproof plug to press the outer end to make the longitudinal ring rib press the ring step surface.