Electrical cable with a bend retaining jacket capable of conforming to a substantial installation curve

• US 5,619,015 A
• Filed: 07/21/1995
• Issued: 04/08/1997
• Est. Priority Date: 07/21/1994
• Status: Expired due to Term

• Current Assignee: Daimlerchrysler North America Corporation (Mercedes-Benz Group AG)
• Original Assignee: Daimler-Benz AG (Mercedes-Benz Group AG)
• Inventors: Kirma, Safa
• Primary Examiner(s): Kincaid, Kristine L.
• Assistant Examiner(s): Nguyen, Chau N.
• Application Number:
  US08/505,688
• Time in Patent Office: 627 Days
• Field of Search: 174/128.1, 174/126.3, 174/84 R, 439/578, 439/579, 439/581, 439/584
• US Class Current: 174/84.00R
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/564 Corrugated cables
• CPC Class Codes: H02G 3/0691 Fixing tubing to casing by auxiliary means co-operating with indentations of the tubing, e.g. with tubing-convolutions

Abstract

A cable end with its terminal or connector is maintained in a curved installed position with the aid of a bent retaining jacket (25A). The jacket is preferably a corrugated metal hose having one end formed into a bushing that is clamped in place on a support body of the connector or terminal together with other cable components such as a protective hose system. The bend maintaining jacket has an inner diameter that is larger than the outer diameter of the protection hose system of the cable so that the jacket may be freely pushed over the cable end prior to the installation of the terminal or connector. The opposite end of the jacket remains open or rather unconnected, thus enabling the jacket to accommodate any twists that result from bending the cable end. Although the jacket is bendable, it has a bend retaining characteristic that will not change its curved configuration in response to impacts, vibrations, or the like. Only an intentional renewed bending can bring the jacket into a new curved shape.

Claims

1. An electrical cable for installation in an aircraft, comprising one or more electrical conductors (8), a connector (29) electrically connected to said conductors (8), a protective hose system (5, 6, 6A) enclosing said conductors (8), a bend maintaining jacket (25A) surrounding said protective hose system (5, 6, 6A) along at least part of said electrical cable, a support body (31) and at least one clamping device (11) cooperating in securing said protective hose system (5, 6, 6A) and said bend maintaining jacket (25A) to said connector (29), said support body (31) having a large diameter section (31A), a small diameter section (31B) and a shoulder (31C) interconnecting said large and small diameter sections (31A, 31B), said protective hose system comprising an electrical conducting hose (5) made of a metal-webbing having an end surrounding said small diameter section (31B) and an electrical insulating hose (6) made of a synthetic material webbing, said bend maintaining jacket (25A) having a first end formed as an end bushing (27) coaxially surrounding said insulating hose (6), said at least one clamping device (11) securing ends of said hoses (5, 6) and said end bushing (27) to said small diameter section (31B), whereby said jacket (25A) maintains any bend in said at least part of said electrical cable.

2. The electrical cable of claim 1, wherein said end bushing (27) of said first end (26) of said bend maintaining jacket (25A) is a cylinder (27) having a smooth, not corrugated surface.

3. The electrical cable of claim 2, wherein said cylinder (27) has at least one slot extending axially.

4. The electrical cable of claim 1, further comprising a metal bushing (30) coaxially seated on said small diameter section (31B) of said support body (31), said metal bushing (30) comprising a first solid axial section (30A) and a second slotted axial section (30B) forming electrical contact springs elastically biased into contact with said body small diameter section (31B), said metal bushing (30) further comprising a radially extending flange (30C) facing said shoulder (31C) of said support body (31), said electrical conducting hose (5) having an end abutting said flange (30C), said insulating hose (6) having an end abutting said flange (30C), said end bushing (27) of said jacket (25A) also abutting said flange (30C), and wherein said at least one clamping device (11) fixes said abutting ends and said end bushing (27) in place.

5. The electrical cable of claim 4, further comprising a spring ring (32) axially interlocking said metal bushing (30) and said small diameter section (31B) of said support body while permitting a relative rotation between said support body and said metal bushing (30).

6. The electrical cable of claim 1, further comprising an additional clamp (11A) in the form of a pinch sleeve between said electrical conducting hose (5) and said electrical insulating hose (6).

7. The electrical cable of claim 6, wherein said pinch sleeve comprises a solid pinching section (11A) and an axial, slotted extension (11C) forming electrical contacts coaxially enveloping said electrical conducting hose (5).

8. The electrical cable of claim 7, further comprising between said support body (31) and said electrical conducting hose (5) a metal bushing (30) with a radial flange (30C), and wherein said solid pinching section of said clamp (11A) abuts against said radial flange (30C).

9. The electrical cable of claim 1, further comprising a metal bushing (30) with a radial flange (30C) and an axial section (30A) between said small diameter section (31B) of said support body (31) and said electrical conducting hose (5), and wherein said end bushing (27) of said bend maintaining jacket (25A) and said insulating hose (6) are axially spaced from said radial flange (30C) to provide an axial spacing between said radial flange (30C) and said end bushing (27) and between said radial flange and an axial end of said insulating hose (6), said at least one clamping device (11) comprising a first section (11B) positioned in said axial spacing in contact with said electrical conducting hose (5) and a second section (11C) away from said flange in contact with said end bushing (27) to thereby clamp said end bushing (27) and said axial end of said insulating hose (6) to said small diameter section (31B) of said support body (31).

10. The electrical cable of claim 9, further comprising a spring ring (32) axially interlocking said metal bushing (30) and said small diameter section (31B) of said support body (31) while permitting a relative rotation between said support body and said metal bushing (30).

11. The electrical cable of claim 1, wherein said bend maintaining jacket (25A) comprises a second end (26A) which is not connected to said cable thereby permitting a free movement of said jacket (25A) in response to bending of said cable.

12. The electrical cable of claim 1, wherein said protective hose system ( 5, 6, 6A) of said cable has an outer diameter smaller than an inner diameter of said bend maintaining jacket (25A).

13. The electrical cable of claim 1, wherein said bend maintaining jacket (25A) is a corrugated metal hose.