The structure principle of the board-to-board connector

The structure principle of the board-to-board connector

The basic structural parts of board-to-board connectors are as follows: contacts, insulators, shells, accessories

Contacts are the core parts of the connector to complete the electrical connection function. Generally, a contact pair is composed of a male contact piece and a female contact piece, and the electrical connection is completed by the insertion of the female and male contact pieces.

The shape of the male contact piece is cylindrical (round pin), square column (square pin) or flat (insert piece), which is a rigid part. The male contact is generally made of brass or phosphor bronze.

The contact piece is the socket, which is the key part of the contact pair. It relies on the elastic structure to be elastically deformed when it is inserted into the pin to generate elastic force to form close contact with the male contact piece to complete the connection.

There are many types of jack structures, including cylindrical (splitting, necking), tuning fork, cantilever type (longitudinal slot), folding type (longitudinal slot, 9-shaped), box-shaped (square jack) And the hyperboloid wire spring jack and so on.

The insulator is also often called a base or a mounting plate. Its function is to arrange the contact pieces according to the required position and spacing, and to ensure the insulation performance between the contact pieces and between the contact piece and the housing. Good insulation resistance, withstand voltage performance and easy processing are the basic requirements for selecting insulating materials to be processed into insulators.

The shell is also called the shell. It is the outer cover of the board-to-board connector. It provides mechanical protection for the built-in insulating mounting board and pins, and provides the alignment of the plug and socket when mating, and then fixes the board-to-board connector to the On the device.

The accessories are divided into structural accessories and installation accessories. Structural accessories such as clamp rings, positioning keys, positioning pins, guide pins, connecting rings, cable clamps, sealing rings, gaskets, etc. Install accessories such as screws, nuts, screws, spring rings, etc. Most of the accessories have standard parts and common parts