Elastic electrical contact terminal

Abstract

Disclosed is an elastic electrical contact terminal capable of achieving reliable electrical connection between objects. The electrical contact terminal includes: an elastic core; the silica gel adhesive is coated on the outer surface of the elastic core; and a conductive fiber wound and adhered to the elastic core with the silica gel adhesive interposed therebetween, in which the sheet has a polymer coating layer formed on the inner surface thereof facing the silica gel adhesive and a metal layer formed on the outer surface thereof.

Description

technical field [0001] The present invention relates to an elastic electrical contact terminal, in particular, to an elastic electrical contact terminal that has elasticity between objects, realizes reliable electrical connection, and electrically contacts with opposing objects The resistance is small. Background technique [0002] Generally, the elastic electrical contact terminal should have excellent electrical conductivity and elasticity, and be fixed on the printed circuit board by soldering or double-sided conductive pressure sensitive adhesive. [0003] figure 1 An example of a conventional electrical contact terminal is shown. [0004] A conductive sheet 30 coated with a hot-melt adhesive 20, which is a thermoplastic polymer adhesive such as polyurethane or acrylic, is wound around the insulating polyurethane sponge 10, and is bonded by heat. The bottom surface of the double-sided conductive pressure-sensitive adhesive tape 40 is adhered. [0005] Among them, as ...

AI Technical Summary

Problems solved by technology

[0007] Since hot-melt adhesives are generally electrically insulating, in the case where the hot-melt adhesive protrudes high from the outer surface of the conductive sheet, if the protruding part touches the conductive object, the final object will be damaged. The resistance between the conductive sheet and the conductive sheet increases, and as a result, the electrical connection between objects passing through the electrical contact terminal cannot be reliably achieved

[0008] If the hot melt adhesive is conductive, there is a disadvantage of high price and much higher resistance than the conductive sheet

[0009] Further, such hot-melt adhesives are generally composed of thermoplastic polymers such as polyurethane, which will be melted again if heated, making it difficult to maintain adhesion at higher temperatures (assumed to be above 105°C). The downside of being hard to use at such temperatures

[0010] Also, since only polyurethane sponge is used as the elastic body, there is a disadvantage that it is difficult to economically provide electrical contact terminals having various shapes.

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