Seal structure for wire harness

Patent metadata

Field	Value
Publication number	US-2016126709-A1
Application number	US-201514883851-A
Country	US
Kind code	A1
Filing date	Oct 15, 2015
Priority date	Nov 5, 2014
Publication date	May 5, 2016
Grant date	—

Abstract

Sealing ability with respect to a shield pipe is ensured. A wire harness is inserted in the inside of a shield pipe and a braid portion, and furthermore, a corrugated tube is disposed on the outer side of the braid portion. A sealing grommet is disposed to extend across a connecting portion between the shield pipe and the braid portion. A seal member made of rubber is pushed into an end portion of the shield pipe. A wire insertion hole in which a conductive wire of the wire harness is inserted penetrates the seal member, and a wire insertion path is formed in an outer circumferential surface of the seal member toward the wire insertion hole. Thus, the conductive wire can be inserted into the wire insertion hole from a radial direction.

First claim

What is claimed is:

1 . A seal structure for a wire harness, the seal structure comprising:
a shield pipe in which a conductive wire constituting a wire harness is inserted; a tube-shaped flexible shield member that is connected to an end portion of the shield pipe and in which the conductive wire extended out of the shield pipe is inserted; a protective member that surrounds the flexible shield member in a lengthwise direction; a sealing grommet that is disposed to extend between the shield pipe and the protective member while surrounding the flexible shield member; and a seal member that is fitted inside the shield pipe in a watertight condition and that is composed of an elastic material in which a wire insertion hole through which the conductive wire can be inserted in a watertight condition is formed penetrating the elastic material in an axial direction of the shield pipe, wherein a wire insertion path is formed in an outer circumferential surface of the seal member over the entire length thereof, the wire insertion path extending toward the wire insertion hole and enabling the conductive wire to be introduced into the wire insertion hole in a radial direction, the wire insertion path configured to elastically deform in an opening direction during the introduction of the conductive wire, and in a condition in which the conductive wire is introduced into the wire insertion hole, and the seal member is fitted in the shield pipe, at least a protective member-side end portion of the seal member is closed and kept watertight.

2 . The seal structure for a wire harness according to claim 1 ,
wherein a flange that covers an end edge of the shield pipe projects outward from the seal member.

3 . The seal structure for a wire harness according to claim 1 ,
wherein the wire insertion path undulates in a substantially wavy line shape with respect to the axial direction of the seal member.

4 . The seal structure for a wire harness according to claim 2 ,
wherein the wire insertion path undulates in a substantially wavy line shape with respect to the axial direction of the seal member.

Assignees

• Sumitomo Wiring Systems

Inventors

• Maeda Takamasa

Classifications

• H02G3/0462 Primary

  Tubings, i.e. having a closed section · CPC title

• H02G3/0406

  Details thereof (installation or suspension of conduit channels and other supports H02G3/263) · CPC title

• B60R16/0222

  Grommets · CPC title

• H01B7/285 Primary

  by completely or partially filling interstices in the cable · CPC title

• H01B7/17

  Protection against damage caused by external factors, e.g. sheaths or armouring · CPC title