Strain relief device

• US 4,666,229 A
• Filed: 03/01/1985
• Issued: 05/19/1987
• Est. Priority Date: 03/02/1984
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Topcon 1-GO 75-Ban Hasunuma-Cho Itabashi-Ku Tokyo-To, Textilver SA
• Original Assignee: Compagnie Francaise Del Isolants
• Inventors: Grand, Guy C.
• Primary Examiner(s): DESMOND, EUGENE
• Application Number:
  US06/707,264
• Time in Patent Office: 809 Days
• Field of Search: 339/89 C, 339/89 M, 339/90 C, 339/103 R, 339/103 M, 339/109, 339/177 R, 339/177 E
• US Class Current: 439/451
• CPC Class Codes: H01R 13/58 Means for relieving strain on wire connection, e.g. cord grip , for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable for flat or ribbon cables H01R12/771
• CPC Class Codes: H01R 13/5837 specially adapted for accommodating various sized cables H01R13/5825 takes precedence
• CPC Class Codes: H02G 3/0666 with means clamping the armour of the conductor H02G3/0675, H02G3/0683 take precedence

Abstract

The invention provides a strain relief device for a sleeved wire bundle. The sleeve of a wire bundle is gripped between the telescoped portion of first and second annular gripping members, the gripping being effected independently of the wire bundle. The sleeve is gripped by the gripping members as a result of telescoping one member into the other. Preferably, the gripping members fit together with a snap fit. The device may be provided with a support for the wire bundle, to center the bundle in the device and to provide further strain relief.

Claims

1. A strain relief device for a sleeved wire bundle, which comprises first and second annular gripping members having respective portions which can be telescoped together, and being capable of fitting together with a snap-fit, the members being adapted to receive the sleeve between the telescoped portions, and being adapted to grip the sleeve around its perimeter by the telescoping of the said portions, the gripping being effected independently of the wire bundle, wherein the second gripping member comprises an annular neck adapted to cooperate with the first gripping member to grip the sleeve, and a plurality of deformable fingers extending generally axially from the neck, adapted in operation to support the wire bundle.

2. A strain relief device according to claim 1, wherein one of the gripping members comprises a support for supporting the wire bundle.

3. A strain relief device for a sleeved wire bundle, which comprises first and second annular gripping members having respective portions which can be telescoped together, wherein the first gripping member comprises an annular neck and a plurality of projections extending generally axially from the neck in a direction, in the assembled device, towards the second gripping member, and wherein the or each projection is provided with a flange extending generally transversely of the projection for engaging the second gripping member, the members being adapted to receive the sleeve between the telescoped portions, and being adapted to grip the sleeve around its perimeter by the telescoping of the said portions, the gripping being effected independently of the wire bundle.

4. A strain relief device according to claim 3, wherein the projections are resiliently deformable.

5. A strain relief assembly comprising a strain relief device for a sleeved wire bundle and a protection sleeve, the strain relief device comprising first and second annular gripping members having respective portions which can be telescoped together, the sleeve being received between the telescoped portions of the gripping members and gripped by the gripping members, wherein the sleeve extends along the outer surface of the outer gripping member, around an end thereof, and back along an inner surface thereof, the gripping being effected independently of the wire bundle.

6. A strain relief device for a sleeved wire bundle which comprises first and second annular gripping members having respective portions which can be telescoped together, wherein the first gripping member is provided with a transversely extending flange, and the second gripping member comprises a split ring capable of being radially deformed to allow it to pass over the flange, the members being adapted to receive the sleeve between the telescoped portions, so as to grip the sleeve around its perimeter, the gripping being effected independently of the wire bundle.

7. A strain relief device according to claim 6 wherein the first gripping member further comprises an annular neck and a plurality of projections extending generally axialy from the neck in a direction, in the assembled device, towards the second gripping member, the flange being joined to the neck by the projections.

8. A strain relief device according to claim 6 wherein the second gripping member further comprises a plurality of deformable fingers extending generally axially from the split ring.

9. A strain relief device according to claim 6 wherein the first gripping member is a snap-fit with the second gripping member.