In life, in the automotive, electronic equipment, power connections and other categories will be used in the spring contact structure, the head and end of the spring after welding to form a spring ring, we encounter this part structure is often not very understanding, will be questioned "what is this for", the following with the editor to understand the "spring touch", Deal with the doubts and confusion in your mind.
Spring tentacles are also called bevel coil springs and ring springs, the wire coil is elliptical, skewed, when tightened, each coil will be deformed independently, no matter which part of the coil is deformed, the entire spring will react, so as to complete the load on each touch point consistently, so that the whole can maintain an almost constant elastic force.
Because of its structural characteristics, there is no constraint on the scope of use, suitable for use in a variety of static or dynamic medium and high voltage environments, can be used in both mechanical connections and can also act on the transmission of strong current, in automobiles, electronic equipment, high current connectors, high and high voltage switches and other fields are widely used.
Spring tentacles are popular thanks to their strong functionality. The manufacturing structure is simple, small size, small materials, low cost, can meet the requirements of small space size of equipment planners, suitable for compact planning, so it can be simplified and planned into fine equipment with a small number of parts. The ring planning ensures that the spring contacts multi-point contact, high concentration force can complete almost loss-free contact, ensures large current carrying capacity and stable conductive function, and the consistent load at each contact point makes the spring have better wear resistance. After Z, in terms of production, the common structure allows it to have a wide working range, allows large tolerances in the joint surface, has greater adaptability to processing errors and assembly errors, and is more suitable for large-scale production.
At present, the spring contact fingers provided on the market are mainly used in the electrical contact of high-voltage switching, and most of the materials are manufactured with high-conductivity beryllium bronze CuCo₂Be (C17500), high-strength beryllium bronze CuBe₂ (C17200) and chrome zirconium copper CrZrCu (C18150). However, considering that the spring finger is not only a spring but also can be used as a conductor, to summarize the functions, high conductivity beryllium bronze is the Zjia material of the coil spring finger, which has high strength, good conductivity function and high working temperature, and can be applied to 3.5KV-100KV high-voltage switch product line.
In order to make the spring finger fully functional in the equipment, not only the material needs to be carefully selected, but also the planning must be refined. The skewed point of view of the spring α affect the stress of the spring, the greater the α angle, the greater the deformation resistance, and on the contrary, reducing the α angle can be useful to reduce the deformation force. For dynamic connections, in the case of ensuring sufficient contact between the spring finger and the conductor and the guide sleeve, the less stress of the spring finger, the better; For static connections, stress can be added appropriately to further reduce the touch resistance.
