Introduction to Automotive Connectors
- PRODUCT DETAIL
Automotive connector is a component that electronic engineering and technical personnel often touch. Its role is very simple: A bridge of communication is built between the blocking parts or isolated circuits in the automobile circuit, so that the current can flow and the circuit can realize the predetermined function. The form and structure of automobile connectors are ever-changing, and they are mainly composed of four basic structural components. They are: Contacts, housing (depending on the type), insulators, accessories. In the industry, it is also called sheath, connector, and plastic case.
About automotive connectors
Generally, there are nearly one hundred types of connectors used in automobiles, and there are about hundreds of connectors used in a single car model. As people have higher and higher requirements for safety, environmental protection, comfort, and intelligence of automobiles. The increasing application of automotive electronic products will cause the number of automotive connector applications to grow.
Four basic structural components of automotive connectors
I. The contact is the core part of the car 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 male contact is a rigid part, and its shape is cylindrical (round pin), square cylinder (square pin) or flat (insert piece). The male contacts are generally made of brass or phosphor bronze. The female contact 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 positive contact piece to complete the connection. There are many types of jack structures, including cylindrical (split, necking); tuning fork type; Cantilever type (longitudinal slotted); folded type (longitudinal slotted, 9-shaped); Box shape (square socket) and hyperboloid wire spring socket, etc.
II. The shell is the outer cover of the car connector. It provides mechanical protection for the built-in insulating mounting plate and pins, and provides alignment of the plug and socket when mating, and then fixes the connector to the device.
III. Insulators, insulators are also often referred to as car connector bases or inserts. 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 shell. Good insulation resistance, withstand voltage performance and easy processing are the basic requirements for selecting insulating materials to be processed into insulators.
IV. Accessories, 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. It is these four basic structural components that enable automotive connectors to act as bridges and operate stably.
Automotive connectors must meet the USCAR-20 standard, which is the performance standard for automotive electrical connector systems. It is stipulated that the contact surface of the electrical connector of the automobile connector should always be reliable during the entire life cycle, including the following factors:
1. The material of the connector contact is stable and reliable
2. Stable positive force
3. The voltage and current of the circuit are stable
4. The temperature requirement is within the specified range, including the surrounding temperature and its own temperature rise
5. Better robustness
7. Connector insertion force: below 20.5kg;
8. Connector retention: 2.5kg or more;
9. Heat resistance: -40~120℃
China will become an important production base for global automotive connectors in the future. In addition to the existing first-line well-known international manufacturers, other manufacturers that have not yet set up factories in China will continue to increase because of local demand. Under the influence of factors such as localized procurement and cost advantages, production bases have gradually been established in China to supply the needs of local auto component manufacturers.
Therefore, the future of China's automotive connector industry will be a very fierce competition between foreign-funded enterprises and Chinese local enterprises! China will also become one of the important production countries of automobile connectors under the development of foreign-funded enterprises and local enterprises. It remains to be seen who will become the overlord of China's automotive connectors from local enterprises, foreign-funded enterprises and foreign-funded enterprises in the future!