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Features and benefits of miniature spring contact fingers


Release time:

2022-11-22

Features and benefits of miniature spring contact fingers Spring contact refers to the ability to transmit strong current in a small space, and can also be used as a purely mechanical connection. Its use is not limited, and it is suitable for various static or dynamic media and high-pressure environments. Miniature spring contact finger size and coil turns make the spring suitable for various electrical contact designs

Features and benefits of miniature spring contact fingers

Features and benefits of miniature spring contact fingers


Spring contact refers to the ability to transmit strong current in a small space, and can also be used as a purely mechanical connection. Its use is not limited, and it is suitable for various static or dynamic media and high-pressure environments. The size of the miniature spring contact fingers and the number of 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 compensate for contact and surface variations, which allows for greater tolerances between fittings. Multi-contacts increase conductivity, relatively low operating temperature and longer service life.

微型弹簧触指

Miniature spring contact fingers are also called oblique coil springs and ring springs, and the winding coils are oval and inclined. When compressed, each coil will deform. No matter which part of the coil is deformed, the entire spring will generate a reaction force to make the load at each contact point consistent, so the entire spring can maintain an almost constant elastic force. Due to its structural characteristics, the scope of use is not limited, and it is suitable for various static or dynamic medium and high pressure environments. It can be purely used for mechanical connection or strong power transmission, and is widely used in automobiles, electronic equipment, high current connectors, high and medium voltage switches and other fields.


The advantages of the miniature spring finger contact are as follows: 1. Simple structure, small size, low material consumption, low cost, meeting the requirements of small space in device design, suitable for compact design; a small number of components simplifies the connection device Design. 2. Multi-point contact, high concentrated force, can achieve almost non-destructive contact, and ensure greater 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 its working range wider; the contact surface allows large tolerances; it has strong adaptability to processing errors and assembly errors, and is more suitable for mass production.


Spring fingers are popular for their powerful performance. It can meet the requirements of equipment designers for small space size, and is suitable for compact design, so it can be simplified into precision equipment with fewer parts. The ring design ensures that the spring contact fingers are in multi-point contact, and the high concentration force can achieve almost non-destructive contact, thereby 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, its unique structure makes it have a wide working range, allows greater joint surface tolerances, and has greater adaptability to processing errors and assembly errors, making it more suitable for mass production.


In order for the miniature spring contact fingers to fully play their role in the device, not only careful selection of materials, but also detailed design is required. The angle of inclination of the spring affects the stress of the spring. The greater the angle, the greater the deformation resistance; on the contrary, reducing the angle can effectively reduce the deformation force. For dynamic connection, the stress of the miniature spring contact fingers is as small as possible when the miniature spring contact fingers fully contact the conductor and the guide sleeve. For static connections, the stress can be increased appropriately to further reduce the contact resistance.


The main products of Nantong Moore New Material Technology Co., Ltd. include strap contact fingers, spring contact fingers, composite strap contact pins, brass, copper wires, connectors, spring contacts, copper alloy springs, etc. Nantong Moore New Material Technology Co., Ltd. is developed on the basis of its predecessor Nantong Moore Electric Co., Ltd., a professional enterprise engaged in design, manufacturing and sales, development and research of high strength and high conductivity alloy materials and electrical connection products. The company has gained high recognition and reputation from customers in the industry. In the spirit of professional advancement, entrepreneurship and development, the company has established a rigorous, pragmatic and fundamental philosophy. We will manufacture products, create high quality products for the purpose, give full play to the characteristics of flexible enterprises, intentions to serve every customer.


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