# US 7,612,287 B2 · Structure and method for stopping water in shielded electric wire

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- Number: US 7,612,287 B2
- Document ID: US7612287B2
- Status: Granted
- Kind: B2
- Application number: 11/723,225
- Filed: 2007-03-19
- Published: 2007-09-20
- Granted: 2009-11-03
- Earliest claimed: 2006-03-17
- Assignees: Yazaki Corporation
- Inventors: Hidehiro Ichikawa; Kouichi Yamamoto; Shigemi Hashizawa
- Web page: https://patentgrep.com/patent/US7612287B2

## CPC

- H01R 4/72: using a heat shrinking insulating sleeve
- H01B 7/285: by completely or partially filling interstices in the cable
- 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

To simply provide a water-stopping structures for shielded electric wire in the shielded portion of the wire at a low cost, a water stop structure in a shielded electric wire is comprised by stripping a sheath 4 of the shielded electric wire in the middle part thereof; permeating an adhesive into the exposed shield member 3; overlaying a heat shrinkable tube 12 over the shield member via hot melt 14; and heat shrinking the heat shrinkable tube 12 in a state where both ends of the heat shrinkable tube 12 are overlapped with the outer periphery of the sheath 4.

## Claims

### Claim 1

A water stop structure, comprising:
a shielded electric wire including a sheath and an exposed shield member where the sheath is stripped in the middle part thereof;
a hardened adhesive permeated into the shield member such that the adhesive is provided outside, inside, and within the shield member;
a hot melt directly contacted with the adhesive and the exposed shield member;
a heat shrinkable tube overlaying the shield member via the hot melt located between the adhesive and the tube;
wherein the heat shrinkable tube is heat shrunk in a state where both ends of the heat shrinkable tube are overlapped with the outer periphery of the sheath so that the heat shrinkable tube presses the hot melt.

### Claim 2 (depends on 1)

The water stop structure according to claim 1, wherein the hot melt is located between the adhesive and the tube and between the sheath and the tube.

### Claim 3

A method of water stop in a shielded electric wire including a sheath and a shield member, comprising the steps of:
stripping the sheath of the shielded electric wire in the middle part;
permeating an adhesive into the shield member exposed by the middle stripping such that the adhesive is provided outside, inside, and within the shield member;
overlaying a heat shrinkable tube over the middle stripped part via hot melt located between the adhesive and the tube so that the hot melt directly contacts the adhesive and the shield member;
overlapping both ends of the heat shrinkable tube with an outer periphery of the sheath; and
heat shrinking the heat shrinkable tube to apply a pressure to the hot melt, thereby further permeating and hardening the adhesive.

### Claim 4 (depends on 3)

The method according to claim 3, wherein the hot melt is located between the adhesive and the tube and between the sheath and the tube.

### Claim 5

A method of water stop in a shielded electric wire including a sheath and a shield member, comprising the steps of:
stripping the sheath of the shielded electric wire in the middle part;
permeating an adhesive into a shield member exposed by the middle stripping such that the adhesive is provided outside, inside, and within the shield member;
overlaying a heat shrinkable tube over the middle stripped part via hot melt located between the adhesive and the tube so that the hot melt directly contacts the adhesive and the shield member;
overlapping both ends of the heat shrinkable tube with an outer periphery of the sheath; and
heat shrinking the heat shrinkable tube,
wherein the adhesive is permeated into the shield member exposed by the middle stripping by immersing the middle stripped part into the adhesive contained in a container.