Publish Time: 2021-10-08 Origin: Site
The automotive connector is a component that electronic engineering and technical personnel often touch. Its function is very simple: to build a bridge of communication between blocked or isolated circuits in the 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: contacts, shells, insulators, and accessories. In the industry, it is usually referred to as sheath, connector, and plastic case. There are nearly a hundred types of connectors used in general 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, intelligence, etc., the application of automotive electronic products is increasing, which will cause the number of automotive connector applications to show an increase.
Four basic structural components of automotive connectors
Design standards for automotive connectors
The development trend of automotive connectors
1.The contact, is the core part of the automotive connectors to complete the electrical connection function. Generally, a contact pair is composed of rigid parts and sockets
2. The shell, is the outer cover of the automotive connectors. It provides mechanical protection for the built-in insulating mounting plate and pins, and provides the alignment of the plug and socket when mating, and then fixes the connector to the device.
3. The insulator, insulator is also often called the base or the insert of the automotive connectors, its function is to arrange the contacts according to the required position and spacing, and to ensure the contacts Insulation performance between the shell and the shell.
4.The accessories, 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
With the rapid development of the automobile industry, various functional parts and various parts of automobiles are constantly developing in the direction of intelligence, refinement and reliability. The structural design, appearance design and materials of automobile connectors have also been proposed. higher requirement. Automotive connectors must meet the USCAR-20 standard, which is the performance standard of automotive electrical connector systems. It stipulates that the contact surface of automotive connectors must always be reliable during the entire life cycle, including the following factors:
1. The material of the connector contact is stable and reliable
2. The positive force is stable
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
6. It must be the same as the connector used in the high-speed and long-distance communication computer, and the automobile connector must be able to work reliably under harsh conditions
7. Connector insertion force: below 20.5 kg;
8. Connector retention: 2.5kg or more;
9. Heat resistance: -40~120℃
At present, global automotive connectors account for about 15% of the connector industry. In the future, driven by automotive electronic products, it is expected to occupy a larger proportion. In terms of product cost structure, the average connector cost per car in China is only a few hundred yuan. Compared with foreign countries, the connector cost per car is about $125 to $150. China’s automotive connector market still has great development potential. In the future, each car will use 600-1,000 electronic connectors, far greater than the number used today. China is expected to become an important production base for global automotive connectors in the future.
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