SHIELDED AND SEALED ELECTRIC HARNESS

• US 20070270037A1
• Filed: 05/15/2007
• Published: 11/22/2007
• Est. Priority Date: 05/19/2006
• Status: Active Grant

• Current Assignee: Safran Aircraft Engine Company
• Original Assignee: Hispano Suiza SA (Safran SA)
• Inventors: Pelisson, Pascal, Deterre, Geoffray, Lorand, Anthony, Henrioux, Pascal
• Granted Patent: US 7,687,714 B2
• Time in Patent Office: Days
• US Class Current: 439/607.410
• CPC Class Codes: H01R 13/533 Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure H01R13/52 takes precedence
• CPC Class Codes: H01R 13/6471 by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
• CPC Class Codes: H01R 13/658 High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse] coaxial coupling devices specially adapted for high frequency H01R24/40; for flat or ribbon cable connectors H01R12/774; for coaxial cable H01R9/05
• CPC Class Codes: H01R 13/6584 formed by conductive elastomeric members, e.g. flat gaskets or O-rings
• CPC Class Codes: H01R 13/6592 the conductive member being a shielded cable
• CPC Class Codes: H01R 13/6598 Shield material
• CPC Class Codes: H01R 2107/00 Four or more poles
• CPC Class Codes: H01R 24/564 Corrugated cables
• CPC Class Codes: H01R 4/72 using a heat shrinking insulating sleeve

Abstract

A shielded and sealed electric harness comprises conductors housed in a tubular structure providing protection and shielding, the structure being constituted by a tubular inner textile braid, an intermediate metal tubular braid for electromagnetic shielding, and a corrugated outer sheath having its end adhesively bonded to a heat-shrink endpiece for fastening onto a portion of a connector of a branch joint.

Claims

1. A shielded and sealed electric harness, comprising a set of conductor elements fitted at their ends with connectors or branch joints, each conductor element comprising at least one electrically conductive wire or cable mounted in a tubular protective and shielding structure that comprises a tubular inner textile braid and an intermediate metal braid for electromagnetic shielding, wherein the tubular structure also comprises a corrugated outer sheath made of polymer, surrounding the intermediate metal braid and having at least one end secured to a tubular endpiece of heat-shrink material, said tubular endpiece enabling the outer sheath to be fastened onto a connector or a branch joint, and serving to clamp and secure one end of the intermediate metal braid, by means of a metal collar or ferrule onto a tubular metal part of the connector or of the branch joint.

2. A harness according to claim 1, wherein the outer sheath is made of polytetrafluoroethylene.

3. A harness according to claim 2, wherein the end of the outer sheath is chemically treated to enable it to be adhesively bonded onto the endpiece of heat-shrink material.

4. A harness according to claim 1, wherein the heat-shrink endpiece is made of a fluorinated elastomer of the Viton type, or of silicone.

5. A harness according to claim 1, wherein the collar or ferrule for clamping and securing the end of the metal braid on the metal part is made of stainless steel or of copper-nickel alloy.

6. A harness according to claim 1, wherein the intermediate metal braid is made of copper-nickel alloy.

7. A harness according to claim 1, wherein the metal part is made of titanium.

8. A harness according to claim 7, wherein the metal part receives an electrically conductive surface coating so as to provide continuity of electromagnetic shielding.

9. A harness according to claim 1, wherein the inner textile braid is made of aramid fibers.