Speaking of caravan plug, caravan socket and Caravan plug and socket, I have to talk about connectors first, because connectors are also called connectors and sockets in China, and connectors generally refer to electrical connectors. That is, a device that connects two active devices to transmit current or signal. The male end and the female end can transmit information or current through contact, which is also called a connector.
1. Improve the production process
Connectors simplify the assembly process of electronic products. Also simplifies the mass production process;
2. Easy to repair
If an electronic component fails, the failed component can be quickly replaced when the connector is installed;
3. Easy to upgrade
With the advancement of technology, components can be updated when connectors are installed, and new and more complete components can be used to replace the old ones;
4. Improve design flexibility
The use of connectors allows engineers to have greater flexibility when designing and integrating new products and when composing systems with components.
The basic performance of the connector can be divided into three categories: mechanical performance, electrical performance and environmental performance. Another important mechanical property is the mechanical life of the connector. Mechanical life is actually a durability indicator, which is called mechanical operation in the national standard GB5095. It takes one insertion and one extraction 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.
1. Mechanical performance As far as the connection function is concerned, the insertion force is an important mechanical performance. Insertion and extraction force is divided into insertion force and extraction force (extraction force is also called separation force), the requirements of the two are different. There are provisions for maximum insertion force and minimum separation force in the relevant standards, which shows that from the point of view of use, the insertion force should be small (there are structures with low insertion force LIF and no insertion force ZIF), and if the separation force is too small, It will affect the reliability of the contact. The plug-in force and mechanical life of the connector are related to the contact structure (the magnitude of the positive pressure) the coating quality (the sliding friction coefficient) of the contact part and the dimensional accuracy of the contact (alignment).
2. Electrical performance The main electrical performance of the connector includes contact resistance, insulation resistance and dielectric strength.
3. Environmental performance Common environmental performance includes temperature resistance, humidity resistance, salt spray resistance, vibration and shock resistance.
①Temperature resistance At present, the maximum working temperature of the connector is 200℃ (except for a few high-temperature special connectors), and the lowest temperature is -65℃. When the connector is working, the current generates heat at the contact point, which causes a temperature rise. Therefore, it is generally believed that the working temperature should be equal to the sum of the ambient temperature and the temperature rise of the contact point. In some specifications, the maximum temperature rise allowed by the connector under the rated operating current is clearly specified.
②The intrusion of moisture resistance will affect the insulation performance of the connection h and rust metal parts. Constant heat and humidity test conditions are relative humidity 90%-95% (according to product specifications, up to 98%), temperature +40±20℃, and the test time is according to product specifications, at least 96 hours. The alternating damp heat test is more stringent.
③When the salt spray resistant connector works in an environment containing moisture and salt, the surface treatment layer of its metal structure and contact may produce galvanic corrosion, which will affect the physical and electrical properties of the connector. In order to evaluate the ability of electrical connectors to withstand this environment, a salt spray test is specified. It is to hang the connector in a temperature-controlled test box, and spray out a sodium chloride solution of a specified concentration with compressed air to form a salt spray atmosphere. The exposure time is specified by the product specification and is at least 48 hours.
④Vibration and shock Vibration and shock resistance is an important performance of electrical connectors, especially in special application environments such as aviation and aerospace, railway and road transportation. It is to test the robustness of the electrical connector's mechanical structure and reliable electrical contact. An important indicator of sex. There are clear regulations in the relevant test methods. In the shock test, the peak acceleration, duration and shock pulse waveform, as well as the interruption time of electrical continuity should be specified.
From a technical point of view, there are only two basic classification methods for connector product categories:
①According to the shape and structure: round and rectangular (cross section);
②According to the working frequency: low frequency and high frequency (with 3MHz as the boundary).
According to the above division, the coaxial connector is round, and the printed circuit connector is rectangular (historically, the printed circuit connector is indeed separated from the rectangular connector), and the current popular The cross-section of the rectangular connector is trapezoidal, which is approximately rectangular. The frequency division of low frequency and high frequency and radio wave with 3MHz as the boundary is basically the same.
Our caravan plug, caravan socket, Caravan plug and socket meet the various requirements of car safety, high speed, and durability. And the assembly is reinforced, flame retardant, aging resistance, flexible positioning connection, and removable device. No heat, no short circuit, Large current overload protection. Compact components, strong structure, safe, reliable and durable. It is widely used in tractors, semi-trailers, trailers, tractors and other vehicle equipment.
