The basic structure of the connector
The basic structural parts of the connector mainly include ① contact; ② insulator; ③ shell (depending on the type); ④ accessories.
1. Contacts (contacts) refer to the core parts of the connector to complete the electrical connection function. Usually, a contact pair is composed of a male contact piece and a female contact piece, and the electrical connection is completed through the insertion of the female and male contact pieces.
The male contact is a rigid part, and its shape is cylindrical (round pin), square cylinder (square pin), or flat (plug). The male contact is usually made of brass or phosphor bronze.
2. The insulator is also often called the base or the insert. Its function is to arrange the contacts according to the required position and spacing. At the same time, it is necessary to ensure the contact between the contacts and between the contacts and the housing. Insulation performance. Good insulation resistance, withstand voltage performance and easy processability are the basic requirements for selecting insulating materials to be processed into insulators.
3. The shell is also called the shell, which is the outer cover of the connector. It provides mechanical protection for the built-in insulating mounting plate and pins, and also provides the alignment of the plug and socket when mating, so as to fix the connector To the device.
4. The accessories are divided into structural accessories and installation accessories. Structural accessories such as clamp rings, positioning keys, positioning pins, guide pins, coupling rings, cable clamps, sealing rings, gaskets, etc. Installation accessories such as screws, nuts, screws, spring rings, etc. Most of the accessories have standard parts and common parts.