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Understanding the function of miniature spring contact fingers


Release time:

2022-12-01

Miniature spring contact fingers are also called oblique coil springs and ring springs. The wound coil is oval and inclined. When it is compressed, each coil will deform. No matter which part of the coil is deformed, the entire spring will generate a reaction force., So that the load of all contact points is consistent, so the entire spring can maintain a nearly constant elastic force. Due to its structural characteristics, there is no limit to its application range, suitable for various static or dynamic medium and high voltage environments, it can be purely used for mechanical connection or transmission of strong current, and is widely used in automobiles, electronic devices, high current connectors, high and medium voltage switches and other fields.

Understanding the function of miniature spring contact fingers

Miniature spring contact fingers are also called oblique coil springs and ring springs. The wound coil is oval and inclined. When it is compressed, each coil will deform. No matter which part of the coil is deformed, the entire spring will generate a reaction force., So that the load of all contact points is consistent, so the entire spring can maintain a nearly constant elastic force. Due to its structural characteristics, there is no limit to its application range, suitable for various static or dynamic medium and high voltage environments, it can be purely used for mechanical connection or transmission of strong current, and is widely used in automobiles, electronic devices, high current connectors, high and medium voltage switches and other fields.

微型弹簧触指

Compared with traditional mechanical switches, capacitive induction that uses it to build capacitive inductors is a robust alternative. Some cannot directly place the printed circuit board under the covering layer, and cannot connect the printed circuit board to the device housing. Such uses include household appliances such as stoves, washing machines, refrigerators and microwave ovens, as well as various on-board electronic devices such as radios, TV tuners, control panels and occupant detection systems on seats.


Miniature spring contact finger is a widely used elastic parts, with easy deformation, high elasticity characteristics, in real life, what is its main function.


1. Reduce shock and absorb vibration. Use its deformation to absorb the energy of collision and vibration, such as the buffer spring of vehicles and forging equipment, the damping spring of the coupling, etc.


2. Control the action of the mechanism. Its elastic force is used to maintain contact between components, thereby controlling the operation of valve springs of internal combustion engines, control springs of brakes, clutches, cam mechanisms, governors, safety springs, and other mechanisms.


3. Energy storage and output. The use of its deformation when the stored energy, such as clocks, bolts, automatic machine tool holder automatic return device and other springs.


4. Measure the force. The load is measured by using the deformation characteristics of the load cell, the spring balance, the spring of the engine output device, etc., in a linear relationship with the load they bear.


The advantages of miniature spring contact fingers are as follows: 1. The structure is simple, small in size, less materials, and low in cost, which meets the requirements of small space size in device design, and is suitable for compact design. Fewer components simplify the design of the connecting device. 2. Multi-point contact, high concentration force, can achieve almost non-destructive contact, ensure large current carrying capacity, good conductivity, high electrical and thermal stability. 3. The contact pressure of each contact point is not high, and the wear resistance is good. 4. The unique structure makes it work in a wide range, allows large tolerances on the contact surface, has great adaptability to processing errors and assembly errors, and is more suitable for mass production.

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