Shielded and sealed electric harness

• US 7,687,714 B2
• Filed: 05/15/2007
• Issued: 03/30/2010
• Est. Priority Date: 05/19/2006
• Status: Active Grant

• Current Assignee: Safran Aircraft Engine Company
• Original Assignee: Hispano Suiza SA (Safran SA)
• Inventors: Deterre, Geoffray, Henrioux, Pascal, Pelisson, Pascal, Lorand, Anthony
• Primary Examiner(s): Mayo, III; William H
• Application Number:
  US11/748,853
• Publication Number:
  US 20070270037A1
• Time in Patent Office: 1,050 Days
• Field of Search: 174/74.R, 174/74.A, 174/76, 174/78, 174/79, 174/82
• US Class Current: 174/72.00R
• 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 having 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, the tubular protective and shielding structure comprising;

a tubular inner textile braid,

an intermediate metal braid for electromagnetic shielding, and

a corrugated outer sheath made of non-heat-shrink polymer, said corrugated outer sheath surrounding the intermediate metal braid and having at least one end secured to a tubular endpiece of heat-shrink material,

wherein said tubular endpiece enables the outer sheath to be fastened onto a connector or a branch joint, and

wherein one end of the intermediate metal braid is clamped and secured onto a tubular metal part of the connector or of the branch joint by a metal collar or ferrule.

2. A harness according to claim 1, wherein the outer sheath includes 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 includes a fluorinated elastomer of the Viton type, or of silicone.

5. A harness according to claim 1, wherein the collar or ferrule which clamps and secures the end of the metal braid on the metal part includes stainless steel or copper-nickel alloy.

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

7. A harness according to claim 1, wherein the metal part includes 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 includes aramid fibers.

10. A harness according to claim 1, wherein said corrugated outer sheath comprises corrugations defining with the intermediate metal braid at least one internal annular empty space.

11. A harness according to claim 1, wherein said corrugated outer sheath is elastically deformable or flexible.

13. A harness according to claim 3, wherein the end of the outer sheath is chemically treated with sodium ammonia.

12. 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, the tubular protective and shielding structure consisting of;

a tubular inner textile braid,

an intermediate metal, braid for electromagnetic shielding, and

a corrugated outer sheath made of non-shrink polymer, said corrugated outer sheath surrounding said intermediate metal braid and having at least one end secured to a tubular endpiece of heat-shrink material,

wherein said tubular endpiece enabling the outer sheath to be fastened onto a connector or a branch joint, and

wherein one end of the intermediate metal braid is clamped and secured onto a tubular metal part of the connector or of the branch joint by a metal collar or ferrule.