Avionics connector selection, type and use considerations? What factors affect the insertion and extraction force of avionics connectors?

In order to be able to realize the connection and disconnection of the circuit, in a variety of electrical lines, you can frequently see the aviation connector. In order to ensure the safety and reliability of the circuit, we need to have enough knowledge of it, today I introduce you to its selection, type and use of the three aspects of knowledge. Selection: The correct choice is to ensure the reliability of the circuit is an important aspect of our selection, the parameters of the aviation connector is the focus of consideration.　　1, the electrical parameters required: As the product is directly connected to the electrical line, so the electrical parameters should be in line with the requirements of use.　　2, rated voltage, current: the current aviation connector specifications are many, according to the use of environmental requirements and the safety of the installation, the product's rated current and voltage should not be lower than the use of voltage and current.　　3, installation and appearance: today's aviation connector shape is rich, not only curved, also straight, both round and square, in the selection should be considered when the outer diameter of the cable should be matched with the connector. In addition, the installation method is also the focus of consideration. Classification: Aviation connectors according to different criteria, can be divided into many categories, such as: according to the product frequency, can be divided into high-frequency and low-frequency; according to the use of the product, can be divided into audio equipment products, cabinets with products, power supply products, special products and so on. Precautions for use: 1, need to pay attention to the pointers should be one-to-one correspondence when connecting. 2, when plugging and unplugging, the pointers should be one-to-one correspondence.　　2, in the insertion and extraction, to avoid long-term construction of the line in a state of bending, so as to avoid poor contact.　　3, in the installation, the end of the threads need to be tightened, but not too hard to avoid damage.　　4, after the installation, you can use a multimeter to test whether the line corresponding to each pointer is correct, whether the contact is good.

Avionics connector insertion and extraction force is directly related to the reliability of the connection, what factors will affect its insertion and extraction force?1, the number of contacts Contact will be related to the aviation connector power, signal and other conduction, in general, the more contacts, the greater the extraction force, especially the number of high-frequency contacts to be guaranteed.2, the contact pressure The contact pressure is also affecting the insertion and extraction of avionics connector important factors One of the contact pressure will affect the contact resistance, the size of the contact pressure and processing technology, material properties, and whether the contact is deformed.　　Generally speaking, annealing the material before processing, tempering after processing, can make the contact parts of the elasticity increase, the elasticity of the material is better, the contact pressure will also increase, contact properties in the design of the parts can have a variety of changes, but the shape of the design should meet the requirements of the contact pressure. 3, the surface friction coefficient Avionics connectors need to be constantly separated and inserted during the use of the connectors, therefore, friction is an important factor that affects the insertion and extraction force. The friction coefficient is an important factor affecting the insertion and extraction force, the friction coefficient and the pressure of the contact surface. This includes the roughness of the surface of the contact parts, the surface treatment process, the contact parts of the material used, etc., the surface is more rough, the insertion and extraction force will increase, but will also cause wear and tear of the contact parts. 4, the contact parts of the mating error in the production and processing, avionics connectors there are certain errors, such as in the process of insertion and mating, the pin matching deterioration, resulting in insertion and mating of the contact parts fracture, shrinkage of the pin and so on. etc. The above factors will affect the avionics connector insertion and extraction force, after reading, have you mastered it?

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