# US 12,003,053 B2 · Elastic electrical contact terminal

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- Number: US 12,003,053 B2
- Document ID: US12003053B2
- Status: Granted
- Kind: B2
- Application number: 17/740,614
- Filed: 2022-05-10
- Published: 2022-08-25
- Granted: 2024-06-04
- Earliest claimed: 2019-11-15
- Assignees: Joinset Co., Ltd.
- Applicants: Joinset Co., Ltd.
- Inventors: Sun-Ki Kim
- Web page: https://patentgrep.com/patent/US12003053B2

## CPC

- H01R 13/2414: {conductive elastomers}
- H01R 4/58: characterised by the form or material of the contacting members (H01R4/01 takes precedence)
- H05K 3/4015: {using auxiliary conductive elements, e.g. pieces of metal foil, metallic spheres}
- H05K 2201/0133: Elastomeric or compliant polymer
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

An elastic electrical contact terminal capable of implementing a reliable electrical connection between objects, wherein the electrical contact terminal includes: an elastic core; a silicone rubber adhesive applied to the outer surface of the elastic core; and an electrically conductive fiber wrapped around and bonded to the elastic core by means of being interposed with the silicone rubber adhesive, wherein a sheet has a polymer coating layer formed on the inner surface thereof facing the silicone rubber adhesive, and has a metal layer formed on the outer surface thereof.

## Claims

### Claim 1

An elastic electrical contact terminal which is interposed between facing objects to electrically connect the facing objects, comprising:
an elastic core;
a silicone rubber adhesive applied to an outer surface of the core; and
an electroconductive sheet surrounding and adhering to the core with the adhesive interposed therebetween,
wherein the sheet is formed by plating woven filaments with metal,
wherein a polymer coating layer is formed on an inner surface of the sheet which faces the adhesive and adheres to the adhesive, so that the adhesive does not protrude to the outer surface of the sheet by the polymer coating layer, and
wherein an outer surface of the sheet directly comes into electrical contact with the facing objects.

### Claim 2 (depends on 1)

The elastic electrical contact terminal of claim 1, wherein the core is a foam in which skin layers are formed on a pair of surfaces corresponding to each other on a cross section, and both longitudinal cross sections exposed outward have an open cell structure.

### Claim 3 (depends on 2)

The elastic electrical contact terminal of claim 2, wherein the core further comprises a non-foamed elastic body stacked below the foam with an adhesive interposed therebetween.

### Claim 4 (depends on 3)

The elastic electrical contact terminal of claim 3, wherein the foam has a height greater than a height of the elastic body.

### Claim 5 (depends on 3)

The elastic electrical contact terminal of claim 3, wherein the foam has hardness and a compressive force which are smaller than hardness and a compressive force of the elastic body, respectively.

### Claim 6 (depends on 1)

The elastic electrical contact terminal of claim 1, wherein the core is a silicone rubber tube.

### Claim 7 (depends on 1)

The elastic electrical contact terminal of claim 1, wherein the adhesive is formed by applying and curing a liquefied silicone rubber corresponding to the adhesive.

### Claim 8 (depends on 1)

The elastic electrical contact terminal of claim 1, wherein the polymer coating layer is formed by applying and curing a liquefied polymer coating liquid corresponding to the polymer coating layer, and
wherein the polymer coating layer does not come into direct contact with the objects due to the polymer coating liquid which moves outward through gaps between woven filaments.

### Claim 9 (depends on 1)

The elastic electrical contact terminal of claim 1, comprising a double-sided electroconductive pressure-sensitive adhesive tape which covers and adheres to the outer surface of the sheet which is attached to a lower surface of the core to be spaced apart therefrom.