# US 10,872,711 B2 · Cable having a twisted pair electronic wire and a release layer

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- Number: US 10,872,711 B2
- Document ID: US10872711B2
- Status: Granted
- Kind: B2
- Application number: 16/635,525
- Filed: 2018-04-27
- Published: 2020-08-13
- Granted: 2020-12-22
- Earliest claimed: 2017-08-01
- Assignees: Sumitomo Electric Industries, Ltd.
- Applicants: Sumitomo Electric Industries, Ltd.
- Inventors: Takaya Kohori; Hiroyuki Okawa
- Web page: https://patentgrep.com/patent/US10872711B2

## CPC

- H01B 7/0009: {Details relating to the conductive cores}
- H01B 7/223: {forming part of a high tensile strength core}
- C22C 9/00: Alloys based on copper
- C22F 1/08: of copper or alloys based thereon
- H01B 1/026: {Alloys based on copper}
- H01B 3/308: {Wires with resins}
- H01B 7/04: Flexible cables, conductors, or cords, e.g. trailing cables
- H01B 7/0876: {comprising twisted pairs}
- H01B 7/38: with arrangements for facilitating removal of insulation
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)

## Abstract

An electronic wire and a cable which are excellent in bending resistance even when a diameter is small. The electronic wire has a conductor and a resin insulating layer coated on the conductor. The conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted, a diameter of the wire is 0.05 mm or more and 0.2 mm or less, a cross-sectional area of the conductor is 1.0 mm2 or more and 3.0 mm2 or less, a breaking elongation of the conductor is 10% or more and 17% or less, a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and the insulating layer is disposed to be in close contact with the conductor and has a solid structure.

## Claims

### Claim 1

A cable comprising:
a twisted pair electronic wire in which a first electronic wire and a second electronic wire are twisted together, each of the first electronic wire and the second electronic wire comprising:
a conductor made of a copper or a copper alloy; and
a resin insulating layer coated on the conductor;
a jacket coated on the twisted pair electronic wire; and
a release layer is provided between the first electronic wire and the jacket and between the second electronic wire and the jacket,
wherein the conductor is a double twisted wire in which twisted wires formed by twisting a plurality of wires are twisted,
a diameter of the wire is 0.05 mm or more and 0.2 mm or less,
a cross-sectional area of the conductor is 1.0 mm2 or more and 3.0 mm2 or less,
a breaking elongation of the conductor is 10% or more and 17% or less,
a tensile strength of the conductor is 200 MPa or more and 400 MPa or less, and
the insulating layer has a solid structure disposed to be in close contact with the conductor.

### Claim 2 (depends on 1)

The cable according to claim 1,
wherein an outer peripheral surface of the jacket is a polyurethane resin.

### Claim 3 (depends on 1)

The cable according to claim 1, wherein
the breaking elongation of the conductor is 10% or more and 15% or less, and
the tensile strength of the conductor is 260 MPa or more and 400 MPa or less.

### Claim 4 (depends on 2)

The cable according to claim 2, wherein
the breaking elongation of the conductor is 10% or more and 15% or less, and
the tensile strength of the conductor is 260 MPa or more and 400 MPa or less.

### Claim 5 (depends on 2)

The cable according to claim 2, further comprising:
a third electronic wire and a fourth electronic wire having a diameter smaller than a diameter of the first electronic wire and the second electronic wire,
wherein the third electronic wire and the fourth electronic wire are twisted together to form a twisted pair electronic wire.

### Claim 6 (depends on 2)

The cable according to claim 2, further comprising:
a third electronic wire and a fourth electronic wire having a diameter smaller than a diameter of the first electronic wire and the second electronic wire,
wherein the third electronic wire and the fourth electronic wire are arranged in parallel along the length direction of the cable.

### Claim 7 (depends on 2)

The cable according to claim 2, further comprising:
a third electronic wire and a fourth electronic wire having a diameter smaller than a diameter of the first electronic wire and the second electronic wire, wherein
each of the third electronic wire and the fourth electronic wire include a conductor which is formed as a twisted wire in which a plurality of wires are twisted together and an insulating layer which is provided to be coated on an outer periphery of the conductor, and
the number of wires forming the conductor is 50 or more and 70 or less,
a cross-sectional area of the conductor is 0.18 mm2 or more and 0.40 mm2 or less,
a breaking elongation of the conductor is 10% or more and 15% or less,
a tensile strength of the conductor is 200 MPa or more and 400 MPa or less.

### Claim 8 (depends on 1)

The cable according to claim 1, wherein
the breaking elongation of the conductor is 10% or more and 14% or less, and
the tensile strength of the conductor is 270 MPa or more and 350 MPa or less.