Cable waterproof structure, wire harness, and method of manufacturing wire harness

Patent metadata

Field	Value
Publication number	US-10304590-B2
Application number	US-201815879597-A
Country	US
Kind code	B2
Filing date	Jan 25, 2018
Priority date	Jan 31, 2017
Publication date	May 28, 2019
Grant date	May 28, 2019

Abstract

A cable waterproof structure includes a plurality of insulated wires and a sheath covering the plurality of insulated wires collectively, a heat shrinkable tube with adhesive that includes adhesive inside, and is provided and shrunk so as to cover an end of the sheath and a circumference of the plurality of insulated wires extended from the end of the sheath, and a fixing heat shrinkable tube that includes no adhesive inside, and is provided and shrunk so as to cover a part of the heat shrinkable tube with adhesive that covers the sheath and a circumference of the sheath extended from the heat shrinkable tube with adhesive, wherein a shrinkage start temperature of the fixing heat shrinkable tube is higher than a shrinkage start temperature of the heat shrinkable tube with adhesive.

First claim

What is claimed is:

1. A cable waterproof structure, comprising:
a cable comprising a plurality of insulated wires and a sheath covering the plurality of insulated wires collectively;
a heat shrinkable tube with adhesive that comprises adhesive inside, and is provided and shrunk so as to cover an end of the sheath and a circumference of the plurality of insulated wires extended from the end of the sheath; and
a fixing heat shrinkable tube that comprises no adhesive inside, and is provided and shrunk so as to cover a part of the heat shrinkable tube with adhesive that covers the sheath and a circumference of the sheath extended from the heat shrinkable tube with adhesive,
wherein a shrinkage start temperature of the fixing heat shrinkable tube is higher than a shrinkage start temperature of the heat shrinkable tube with adhesive.

2. The cable waterproof structure according to claim 1 , wherein the fixing heat shrinkable tube comprises a material harder than the sheath.

3. The cable waterproof structure according to claim 1 ,
wherein a length along a cable longitudinal direction of a non-overlap part between the fixing heat shrinkable tube and the heat shrinkable tube with adhesive is not less than 1 mm and not more than 12 mm, and
wherein an overlap length along the cable longitudinal direction between the heat shrinkable tube with adhesive and the fixing heat shrinkable tube is not less than 1 mm and not more than 12 mm.

4. A wire harness, comprising:
a cable comprising a plurality of insulated wires and a sheath covering the plurality of insulated wires collectively;
a heat shrinkable tube with adhesive that comprises adhesive inside, and is provided and shrunk so as to cover an end of the sheath and a circumference of the plurality of insulated wires extended from the end of the sheath; and
a fixing heat shrinkable tube that comprises no adhesive inside, and is provided and shrunk so as to cover a part of the heat shrinkable tube with adhesive that covers the sheath and a circumference of the sheath extended from the heat shrinkable tube with adhesive,
wherein a shrinkage start temperature of the fixing heat shrinkable tube is higher than a shrinkage start temperature of the heat shrinkable tube with adhesive.

5. The wire harness according to claim 4 , wherein the fixing heat shrinkable tube comprises a material harder than the sheath.

6. The wire harness according to claim 4 ,
wherein a length along the cable longitudinal direction of a non-overlap part between the fixing heat shrinkable tube and the heat shrinkable tube with adhesive is not less than 1 mm and not more than 12 mm, and
wherein an overlap length along the cable longitudinal direction between the heat shrinkable tube with adhesive and the fixing heat shrinkable tube is not less than 1 mm and not more than 12 mm.

7. The wire harness according to claim 4 ,
wherein the plurality of insulated wires is separated at a heat shrinkable tube with adhesive side opposite to the fixing heat shrinkable tube, and
wherein the wire harness comprises a separated part housing covering a separated part that separates the plurality of insulated wires, and a part of the heat shrinkable tube with adhesive.

8. A wire harness, comprising:
a cable comprising a plurality of insulated wires and a sheath covering the plurality of insulated wires collectively;
a heat shrinkable tube with adhesive that comprises adhesive inside, and is provided and shrunk so as to cover an end of the sheath and a circumference of the plurality of insulated wires extended from the end of the sheath; and
a fixing heat shrinkable tube that comprises no adhesive inside, and is provided and shrunk so as to cover a part of the heat shrinkable tube with adhesive that covers the sheath and a circumference of the sheath extended from the heat shrinkable tube with adhesive,
wherein a shrinkage start temperature of the fixing heat shrinkable tube is higher than a shrinkage start temperature of the heat shrinkable tube with adhesive,
wherein the plurality of insulated wires is separated at a heat shrinkable tube with adhesive side opposite to the fixing heat shrinkable tube,
wherein the wire harness comprises a separated part housing covering a separated part that separates the plurality of insulated wires, and a part of the heat shrinkable tube with adhesive,
wherein the separated part housing comprises a resin mold, and
wherein the separated part housing fails to cover the fixing heat shrinkable tube.

9. A wire harness, comprising:
a cable comprising a plurality of insulated wires and a sheath covering the plurality of insulated wires collectively;
a heat shrinkable tube with adhesive that comprises adhesive inside, and is provided and shrunk so as to cover an end of the sheath and a circumference of the plurality of insulated wires extended from the end of the sheath; and
a fixing heat shrinkable tube that comprises no adhesive inside, and is provided and shrunk so as to cover a part of the heat shrinkable tube with adhesive that covers the sheath and a circumference of the sheath extended from the heat shrinkable tube with adhesive,
wherein a shrinkage start temperature of the fixing heat shrinkable tube is higher than a shrinkage start temperature of the heat shrinkable tube with adhesive,
wherein the plurality of insulated wires is separated at a heat shrinkable tube with adhesive side opposite to the fixing heat shrinkable tube,
wherein the wire harness comprises a separated part housing covering a separated part that separates the plurality of insulated wires, and a part of the heat shrinkable tube with adhesive, and
wherein the separated part housing collectively comprises a main body covering the separated part and a part of the heat shrinkable tube with adhesive, a protruded wire protector that covers each extended part of the insulated wires extended from the main body respectively, or covers a circumference of the extended part of the plurality of insulated wires collectively.

Assignees

• Hitachi Metals Ltd

Inventors

• Takahashi Noriyuki

Classifications

• B60R16/0207

  Wire harnesses · CPC title

• B60R16/0215

  Protecting, fastening and routing means therefor · CPC title

• H01R13/5205

  Sealing means between cable and housing, e.g. grommet (H01R13/5221 takes precedence) · CPC title

• H01B7/0045

  Cable-harnesses · CPC title

• H01R13/5216

  characterised by the sealing material, e.g. gels or resins · CPC title