What is the structure of the circular connector like? How is the connection made? Factors can affect the life of its jack?

What is the structure of the circular connector? How is the connection made?　The basic structure of a circular connector consists of a shell, contacts, insulators, and accessories.1. ShellThe shell, also known as the housing, is the outer covering of the circular connector. It provides mechanical protection for the built-in insulated mounting plate and pins, and provides alignment when plugs and sockets are inserted, thus securing the connector to the device.2. Contacts

Contacts are the core components of circular connectors to fulfill the function of electrical connection. Usually, the contact pair consists of male and female contacts, and through the insertion of female and male contacts to complete the electrical connection.3. InsulatorInsulator is also known as the base or mounting plate. Its role is to arrange the contacts according to the required position and spacing, to ensure that the insulation between the contacts and between the contacts and the shell.4. Accessories accessories are divided into structural accessories and installation accessories. Circular connector connection: 1. In the design process of the connector, the rated current requirements are met by the thermal design of the connector, because when the current flows through the contact pair, the contact pair will heat up due to conductor resistance and contact resistance; 2. When its heating exceeds a certain limit, it will destroy the insulation of the connector, and the contact will soften the surface coating, leading to failure; 3. So to limit the rated current, the connector actually internal Temperature rise can not exceed the design of the specified value; 4. The problem to be noted when selecting is: for multi-core connectors, the rated current shall be derated. Circular connectors are used in complex environments. In order to ensure that the performance is still stable under different environmental conditions, the requirements for environmental adaptability are relatively high. However, even if the circular connector has a strong environmental adaptability, but in the long-term use of the process, the impact of environmental factors on the circular connector can not be ignored, especially the socket part is vulnerable to humidity, temperature, vibration and other environmental factors, thus shortening its service life. Specifically as follows: 1. Humidity: When the humidity in the environment is too high, water and metal parts will be corroded, the insulation of the electronic socket is reduced, the conductivity increases. The greater the environmental humidity, will affect the service life of the circular connector jack. So now many products are made of materials that are less affected by water.2. Temperature: The temperature varies from season to season, especially in summer. High ambient temperature, coupled with the presence of current after plugging, will increase the heat, resulting in the jack temperature is easy to rise. High temperature will change the service life of the circular connector jack. In general, the operating temperature of the circular connector jack is -60 -200.3. Salt Spray: It has been found that when the temperature is 35. and the concentration of salt solution is 3%, the metal parts will be corroded. Once the metal parts of the circular connector jack are corroded, the performance will be reduced. In addition, vibration and shock will also affect the service life of the circular connector jack. When there is vibration and shock in the use environment, the connection firmness of the circular connector will be affected. Therefore, in order to extend the service life of the product, manufacturers will pass the test of vibration and shock environment before leaving the factory.

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