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Function and advantage of spring contact finger


Release time:

2022-03-15

Spring contact finger refers to the ability to transmit strong current in a small space, and can also be used as a purely mechanical connection. There is no restriction on its use, and it is suitable for various static or dynamic medium and high pressure environments. The size of the spring contact fingers and the number of independent coil turns make the spring suitable for various electrical contact designs, and the contact points are ideal for current carrying capacity as an electrical or EMI shield. Each coil will independently compensate for contact and surface variations, which allows for greater tolerances between fittings. The multi-contact increases the conductivity, and at the same time its operating temperature is relatively low, so the service life is longer.

Function and advantage of spring contact finger

Spring touch finger isRefers to the ability to transmit strong current in a small space, and can also be used as a purely mechanical connection. There is no restriction on its use, and it is suitable for various static or dynamic medium and high pressure environments. The size of the spring contact fingers and the number of independent coil turns make the spring suitable for various electrical contact designs, and the contact points are ideal for current carrying capacity as an electrical or EMI shield. Each coil will independently compensate for contact and surface variations, which allows for greater tolerances between fittings. The multi-contact increases the conductivity, and at the same time its operating temperature is relatively low, so the service life is longer.

弹簧触指

Spring touch fingerAlso known as oblique coil springs and toroidal springs, the winding coils are elliptical and inclined. When compressed, each coil will deform independently. No matter which part of the coil is deformed, the entire spring will generate a reaction force, so that the load of each contact point is consistent, so the entire spring can maintain a nearly constant elastic force. Due to its structural characteristics, there is no restriction on the scope of use, and it is suitable for various static or dynamic medium and high pressure environments. It can be used purely for mechanical connection or for transmission of strong current, and is widely used in automobiles, electronic devices, high current connectors, high and medium voltage switches and other fields.

The advantages of spring finger contact are as follows: 1. Simple structure, small size, less materials, low cost, meeting the requirements of small space size in device design, suitable for compact design; a small number of components simplifies the design of the connecting device. 2, multi-point contact, high concentration force, can achieve almost non-destructive contact, to ensure a larger 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; it allows a large tolerance on the contact surface; it has great adaptability to processing errors and assembly errors, and is more suitable for mass production.

Spring touch fingerRefers to its strong performance and popular. It can meet the requirements of device designers for small space size and is suitable for compact design, so it can be simplified to precision devices with fewer parts. The ring design ensures that the spring contact fingers are in multi-point contact, and the high concentrated force can achieve almost non-destructive contact, thus ensuring greater current-carrying capacity and stable conductivity. The uniform load of each contact point makes the spring have better wear resistance. As far as production is concerned, the unique structure makes it have a wider working range, allows a larger tolerance on the joint surface, and has a greater adaptability to processing errors and assembly errors, which is more suitable for large-scale production.

In order to make the spring contact finger play a full role in the device, not only need to carefully select the material, but also need to refine the design. The inclination angle of the spring affects the stress of the spring. The larger the angle, the greater the deformation resistance; on the contrary, reducing the angle can effectively reduce the deformation force. For dynamic connection, when the spring contact finger is fully in contact with the conductor and the guide sleeve, the stress of the spring contact finger is as small as possible. For static connection, the stress can be appropriately increased to further reduce the contact resistance.

nantong moore new material technology co., ltd. main products are watchband contact finger, spring contact finger, composite watchband contact finger, brass, copper wire, connector, spring contact, copper alloy spring and so on. Nantong Moore New Material Technology Co., Ltd. is developed from its predecessor Nantong Moore Electric Co., Ltd., which is an enterprise specializing in the design, development and research of high-strength and high-conductivity alloy materials and electrical connection products. Companies in the industry has achieved a high degree of recognition and reputation of the majority of customers. The company in line with professional advanced, pioneering spirit, set up rigorous and pragmatic, the basic concept. To do a product, cast a boutique for the purpose of the enterprise, and give full play to the characteristics of flexible and diverse enterprises, intentions to serve every customer.

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