The circular connector is a type of connector with a cylindrical basic structure and a circular mating surface. In the interconnection classification, it belongs to the fifth category. It is used for mutual connection between devices. Broadly speaking, it includes low-frequency circular connectors, radio frequency coaxial connectors, and audio connectors. Circular connections The cylindrical structure of the device has natural sturdiness and higher strength than any other shape. Do you know what are circular connectors?
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How to judge whether it is a good circular connector?
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A straight-plug steel ball quick-lock circular connector shell assembly, which is composed of a plug and a socket. The plug shell assembly consists of a shell, a locking sleeve, a reed, a pin, a steel ball a, a steel ball b, and a shrapnel a, Shrapnel b, gasket consists of nine parts. After the lock sleeve and the shell are assembled, the pin is inserted from the shell and riveted on the lock sleeve. The lock sleeve and the shell are set to rotate 20 degrees. The plug shell is equipped with a 3-4 A steel ball a plays the role of butt locking. The lock sleeve is provided with a straight groove. When the steel ball a is not supported, it is fully retracted into the shell wall; after being inserted, the lock sleeve is rotated to support the steel ball a and project it out of the inner wall of the shell, Extend into the annular groove on the socket shell to realize the locking of the plug and the socket. It also has the advantages of anti-inclined insertion, anti-terror insertion, excellent electrical performance and shielding performance, anti-vibration, anti-shock, and environmental resistance. It is convenient and quick to lock and unlock, and it is small and convenient to use.
How to judge whether it is a good circular connector?
1. The two most important mechanical properties of circular connectors are insertion force and mechanical life. (The plug-in and pull-out force and mechanical life of the connector are related to the structure of the contact, the quality of the coating at the contact part, and the dimensional accuracy of the contact's arrangement.) The plug-in force is divided into the insertion force and the pull-out force (the pull-out force is also called the separation force). From a point of view, the insertion force should be small (there are low insertion force LIF and no insertion force ZIF structure), and the separation force should be as large as possible within the convenient range to ensure the reliability of the device connection. The mechanical life of a circular connector is an indicator of durability, that is, the number of insertions and removals. It is called mechanical operation in the national standard GB5095. It is based on one insertion and one withdrawal as a cycle, and whether the connector can normally complete its connection function (such as contact resistance value) after the specified insertion and removal cycle is used as the judgment basis.
2. The main electrical properties of the circular connector include contact resistance, insulation resistance, and dielectric strength.
A circular connector with high-quality contact resistance should have a low and stable contact resistance. The contact resistance of circular connectors ranges from a few milliohms to tens of milliohms. Contact resistance has a great influence on automotive electronic applications. Contact resistance is the main electrical performance of automotive connectors (the additional contact surface between the male terminal and the female terminal after a pair of male and female connectors are inserted). Resistance), directly affects the signal transmission and electrical connection of the electrical equipment of the car, and affects the stability and reliability of the electrical equipment. The influencing factors of contact resistance include terminal material, contact interface geometry, terminal forward force, the surface state of terminal contact interface, operating voltage and current, etc.
3. Environmental performance of circular connectors. Common environmental performances include temperature resistance, humidity resistance, salt spray resistance, vibration, and impact.
Combining the above performance, considering the target market of the product, the direction that needs to be considered when choosing a circular connector is expanded to the following 6 points:
1. Application environment, such as indoor/outdoor, industrial/automotive;
2. Is the connection signal or power supply, frequency range, analog signal, or digital signal connected;
3. Rated working current and rated working voltage, contact resistance;
4. What connection method is used, such as crimping or welding;
5. Need to use metal or plastic for the upper and lower shells connected;
6. Whether self-locking or fool-proof design is required;
According to the above selection criteria, it is generally a perfect circular connector that can complete the task well after screening at various levels.
Shenzhen Hongru Connector Co.,Ltd conducts many tests on circular connectors before they leave the factory, and the quality qualification rate is guaranteed. If you are in the circular connector business, you can consider our cost-effective products.
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