# US 9,882,307 B2 · Molded electric wire

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- Number: US 9,882,307 B2
- Document ID: US9882307B2
- Status: Granted
- Kind: B2
- Application number: 15/051,129
- Filed: 2016-02-23
- Published: 2016-09-01
- Granted: 2018-01-30
- Earliest claimed: 2015-02-27
- Assignees: Hitachi Metals, Ltd.
- Applicants: Hitachi Metals, Ltd.
- Inventors: Keisuke Sugita; Akinari Nakayama
- Web page: https://patentgrep.com/patent/US9882307B2

## CPC

- H01R 13/5845: {the strain relief being achieved by molding parts around cable and connections}
- H01B 7/282: Preventing penetration of fluid {, e.g. water or humidity,} into conductor or cable
- H01R 4/70: Insulation of connections (end caps H01R4/22)
- H01R 13/5205: {Sealing means between cable and housing, e.g. grommet (H01R13/5221 takes precedence)}
- Y02A 30/14: Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- 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})
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE

## Abstract

A molded electric wire is composed of a conductor wire, an insulating member coating a circumference of the conductor wire, including a thermoplastic polyurethane, and having an arithmetic average surface roughness of not smaller than 5 μm and not greater than 100 μm, and a molded resin part directly coating a terminal of the insulating member.

## Claims

### Claim 1

A molded electric wire, comprising:
a conductor wire;
an insulating member coating a circumference of the conductor wire, the insulating member comprising a thermoplastic polyurethane, and having an arithmetic average surface roughness of not smaller than 5 μm and not greater than 100 μm; and
a molded resin part directly coating a terminal of the insulating member.

### Claim 2 (depends on 1)

The molded electric wire according to claim 1, wherein the molded resin part comprises a polyamide or a polybutylene terephthalate.

### Claim 3 (depends on 1)

The molded electric wire according to claim 1, wherein the insulating member further comprises a matting agent.

### Claim 4 (depends on 3)

The molded electric wire according to claim 3, wherein the matting agent comprises an inorganic compound powder or crosslinked polymer particles.

### Claim 5 (depends on 1)

The molded electric wire according to claim 1, wherein the insulating member comprises an insulator, which directly coats the circumference of the conductor wire.

### Claim 6 (depends on 1)

The molded electric wire according to claim 1, wherein the insulating member comprises a sheath, which indirectly coats the circumference of the conductor wire.

### Claim 7 (depends on 5)

The molded electric wire according to claim 5, comprising a multiplicity of electrically insulated wires each comprising the conductor wire and the insulator,
wherein terminals of the multiplicity of electrically insulated wires are being coated by the molded resin part together.

### Claim 8 (depends on 7)

The molded electric wire according to claim 7, including a completely externally exposed sheath coating the circumferences of the multiple of electrically insulated wires together,
wherein the molded resin part is not in contact with the sheath and the insulating member is exposed between the molded resin part and the sheath.

### Claim 9 (depends on 1)

The molded electric wire according to claim 1, wherein the airtightness inside the molded resin part is maintained, even after 1000 cycles of heat shock testing where one cycle of the heat shock testing refers to being left unattended at a temperature of −40 degrees Celsius for 30 minutes and left unattended at a temperature of 125 degrees Celsius for 30 minutes.