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What is a miniature spring finger?


Release time:

2022-12-14

What is a miniature spring finger? Miniature spring contact finger refers to a circular coil spring whose coil is oval and inclined. When compressed, each coil will deform. No matter which part of the coil deforms, the entire spring will react, so that the load at each contact point remains consistent.

What is a miniature spring finger?

What is a miniature spring finger?


Miniature spring contact finger refers to a circular coil spring whose coil is oval and inclined. When compressed, each coil will deform. No matter which part of the coil deforms, the entire spring will react, so that the load at each contact point remains consistent.

微型弹簧触指

For the connector, the ends of the spring will be welded together to form a complete ring. For the specific stress requirements of inserting or pulling out each standard coil size, the spring can be placed in the groove in the design of the socket and plug. When the convex groove is inserted into the groove, the inclined coil spring of the miniature spring contact finger will deform under continuous spring stress and produce resistance until the spiral matches the groove. At this point, the coil load and slot design will create a continuous spring stress, which requires a corresponding tension to disconnect the two components. The radial canted ring spring plays two key roles in the bite of the micro connector, which can reduce the number of parts in the system.


The miniature spring contact fingers provide a dual function, can be used as a mechanical connector, and can also maintain the circuit between the male connector and the female connector, thereby reducing radio frequency interference, and the interconnection design of electronic devices is more complicated. The compact design and simple installation provide new tests for interconnect design for military, industrial and commercial applications. The speed of circuits is increasing, while the size of electronic components is decreasing. Therefore, the connector needs to process more signals at a higher speed in a smaller space, or the more contacts in a more compact space, the smaller the size of the connector. Miniature spring touch refers to its unique elastic deformation curve, which has a wide working range-the allowable compression of the spring can reach 35%. Relatively stable elastic force can reduce the temperature difference, tolerance and other deviations caused by wear, each spring ring can play a role.


Due to the particularity of the micro spring contact finger, the evaluation of the stiffness of the ordinary spring is transformed into the evaluation of the tension of the spring clamp. The test of this indicator is carried out under simulated working conditions: first, a force is applied to the contact finger of the miniature spring, and then the deformation is observed to evaluate the "soft" and "hard" degree of the spring. This indicator is directly related to whether the high-voltage switch can be opened and closed smoothly. Testing the indicator requires a dynamometer and a set of fixtures to simulate the working state of the miniature spring contact fingers. Due to technical confidentiality, the manufacturer did not provide a more specific inspection plan. After studying the contact system, the following three detection schemes are proposed:


1. Disconnect the miniature spring contact fingers from the solder point, fix one end, and connect the other end to the dynamometer. Apply different forces to the dynamometer, record the spring elongation under each stress condition, draw the stress-strain curve, and then select the miniature spring contact finger that is more consistent with our products; 2. Simulate the working state of the miniature spring contact finger, Design a set of fixtures, apply force F on the shaft of the simulated conductor to make the shaft drop to the same height h, contacts with different stiffness require different forces, and choose the product suitable for your company; 3. Apply 2 or 3 cycles of force, and record the change of the size H at the same time, in order to obtain a series of forces and the corresponding H, and choose the product suitable for your company according to the measurement results.


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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