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How much do you know about "spring touch fingers?


Release time:

2022-04-18

In life, the development in the fields of automobiles, electronic medical devices, power connectors and so on will be applied to the spring contact finger structure. The head and end of this spring are welded to form a spring ring. We can encounter problems that affect the design and structure analysis of parts. We often do not know very well and will have some questions about "what is this for". Let's learn about the "spring contact finger" with Xiaobian ", resolve your doubts and confusion.

How much do you know about

How much do you know about "spring touch fingers?

In life, the development in the fields of automobiles, electronic medical devices, power connectors and so on will be applied to the spring contact finger structure. The head and end of this spring are welded to form a spring ring. We can encounter problems that affect the design and structure analysis of parts. We often do not know very well and will have some questions about "what is this for". Let's learn about the "spring contact finger" with Xiaobian ", resolve your doubts and confusion.

弹簧触指

Spring contact finger is also called inclined coil spring and ring spring. Its coil is elliptical and inclined. When affected and compressed, each coil will produce a separate deformation. No matter which part of the coil students produce different deformation, the whole spring will analyze and react with the enterprise, thus realizing the consistent load on each contact point, therefore, the overall management of the company can maintain its own nearly constant elasticity of a country at the same time.

Due to its structural characteristics, the scope of use is unlimited, suitable for a variety of static or dynamic high-voltage environment, can be used purely for mechanical connection, can also be used in the transmission of strong current, widely used in automobiles, electronic devices, high-current connectors, high-voltage switches and other fields.

Spring fingers are popular for their powerful performance. In the manufacturing process, the structure is simple, the volume is small, the material is small, and the cost is low, which can meet the space and small size requirements of the device designer, and is suitable for compact design, so the device can be simplified into a precision device with the least parts. In the ring design, the spring contact finger multi-point contact is ensured, and the high concentration force can achieve almost loss-free contact, ensuring large current-carrying capacity and stable conductive performance, and the load of each contact point is uniform, so that the spring has Better wear resistance. Finally, in terms of production, the unique structure makes it have a wide working range, allowing large tolerances on the joint surface, more adaptable to processing and assembly errors, and more suitable for mass production.

At present, the existing spring fingers are mainly used for electrical contacts of high-voltage switches. The materials are mainly high-conductive beryllium bronze cuco2 be (c17500), high-strength beryllium bronze cube 2(c17200) and cr-cu-zr-cu (c18150). However, considering that the spring sheet is both a spring and a conductor, high-conductivity beryllium bronze is the best material for making spiral spring sheets. It has higher strength, better conductivity and higher working temperature. It can be used for 3.5 kv Foshan 100 kv high-voltage switchgear production line.

In order for the spring touch fingers to play a full role in the device, not only the materials need to be carefully selected, but also the design must be excellent. The inclination angle of the spring affects the stress of the spring. The larger the angle, the greater the deformation resistance. At the same time, reducing the angle can effectively reduce the deformation force. For dynamic connection, the better the stress of the spring contact finger; for static connection, the stress can be appropriately increased to further reduce the contact resistance.


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