The basic concept of board-to-board connector is to connect different circuit boards together. It is the connector product with the strongest transmission capacity among all connector product types at present. The basic structural parts of the board-to-board connector are as follows: contacts, insulators, shells, and accessories. This article mainly introduces its basic structure in detail.
The article contains following:
1,The contacts of the board-to-board connector
2,The insulators of the board-to-board connector
3,The shells of the board-to-board connector
4,The accessories of the board-to-board connector
1,The contacts of the board-to-board connector
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 is cylindrical (round pin), square column (square pin) or flat (plug), 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 (split, necked), tuning fork, cantilever type (longitudinal slot), folding type (longitudinal slot, 9-shaped), box-shaped (square jack) and hyperboloid wire spring jacks, etc.
2,The insulators of the board-to-board connector
The insulator is also often called the base or the 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.
3,The shells of the board-to-board connector
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 insulation mounting board and pins, and provides alignment of the plug and socket when mating, and then fixes the board-to-board connector to the on the device.
4,The accessories of the board-to-board connector
The accessories are divided into structural accessories and installation accessories. Structural accessories such as clamp ring, positioning key, positioning pin, guide pin, connecting ring, cable clamp, sealing ring, gasket, etc. Install accessories such as screws, nuts, screws, spring rings, etc. Most of the accessories have standard parts and common parts.
In the design of board-to-board connector, in order to achieve high-density permutation and stable contact performance, narrow-sheet contact methods are usually used. In the terminal structure of the connector, there are two mating structures: blanking terminals and molded terminals. The selection of raw materials needs to maintain a certain degree of strength and toughness. It must have high temperature resistance and a low thermal expansion coefficient.
With the continuous development of connectors and market trends,board-to-board connector are also evolving toward thin-walled, small-pitch and high-performance. It is widely used in the electronic field, such as mobile phones, computers, tablets, wearable devices, etc.
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