General principles of side terminal design

The plan of side terminal is one of the important factors to choose the quality of side terminal. Side terminal is one of the elements of electrical connection, which plays an important role in electrical connection. This paper briefly introduces some general principles to be considered when planning side terminal.

In terms of hardware materials, for parts with conducting current and elasticity, such as side terminal pressing, the quality of materials directly affects the electrical function and connection function of terminals, because the conductivity of materials directly affects the temperature rise and contact resistance, and the quality of elasticity is related to the chemical elements, elastic modulus, hardness and tensile strength of materials. The greater the conductivity of materials, the greater the contact The smaller the resistance, the lower the temperature rise, and the connection between the insertion force and the contact resistance is a quadratic curve.

In the aspect of electroplating, the plating film also has a direct impact on the life of the coupling. As for gold plating and silver plating, the conductivity of silver is higher than that of gold, but its chemical stability is not as good as that of gold, resulting in the film resistance far greater than that of gold plating. However, gold plating costs a lot, only recommend the use of products in acid environment or worse, and use gold plating on the contact part of the tablet, so as to ensure that the application function can be advanced The cost of goods has also been greatly reduced.

For example, the front and back of the assembled products are arc-shaped, long digit deformation, shrinkage deformation caused by uneven wall thickness, etc. At that time, there were several ways to prevent the screw from falling: three ribs, hoops, necks and stamping. Due to the influence of skills and skills, there were not many ways to prevent the screw from falling off. Most of them chose necks to prevent the screw from falling off. The main reason for the occurrence was that the two splicing falcons were not balanced in the front, back, up and down It is indicated that the stress and deformation direction of the splicing Falcon should be considered when planning. The plug-in force of plug-in terminals is connected with materials, electroplating, planning and work used, which is an important mechanical function of the coupler. The insertion and extraction force should be stable, the contact resistance should be small, and it should be able to meet a certain number of life and fatigue, so the demand for hardware shrapnel materials is high. For side terminals with high power, the industry selects imported high conductivity and high elasticity materials such as phosphor copper.