The main structure of the connector can be divided into four parts: contacts, insulators, shells and accessories.

①Contact. It is the core part of the connector to complete the electrical connection function. Generally, a contact pair is formed by an anode contact piece and a cathode contact piece, and the electrical connection is completed by the insertion of the negative and positive contact pieces.

② insulator. The insulator is also often referred to as a base or a mounting plate. Its function is to arrange the contacts in the required position and spacing, and to ensure the insulation performance between the contacts and between the contacts and the housing. Good insulation resistance, withstand voltage performance and ease of processing are the basic requirements for selecting insulating materials to be processed into insulators.

③ Shell. The shell, also known as the shell (depending on the variety), is the outer cover of the connector. It provides mechanical protection for the built-in insulating mounting plate and pins, and provides alignment of the plug and socket when they are mated, thereby securing the connector to the connector. on the device.

④ Attachment. Accessories are divided into structural accessories and installation accessories. Structural accessories such as retaining rings, positioning keys, positioning pins, guide pins, connecting rings, cable clamps, sealing rings and gaskets, etc. Mounting accessories such as screws, nuts, screws and spring rings. Most of the accessories have standard parts and general parts.