CABLE STRAIN RELIEF FOR CABLES, IN PARTICULAR FIBER OPTIC CABLES

• US 20150131945A1
• Filed: 08/28/2012
• Published: 05/14/2015
• Est. Priority Date: 10/06/2011
• Status: Active Grant

• Current Assignee: Huber + Suhner AG
• Original Assignee: Huber + Suhner AG
• Inventors: Scopic, Nesa, Greub, Daniel, Zaina, Patrick, Gadmer, Laif
• Granted Patent: US 9,341,804 B2
• Time in Patent Office: Days
• US Class Current: 385/87
• CPC Class Codes: B23P 11/005 by expanding or crimping
• CPC Class Codes: G02B 6/38875 Protection from bending or twisting
• CPC Class Codes: G02B 6/3888 Protection from over-extension or over-compression
• CPC Class Codes: G02B 6/4471 Terminating devices demountable connectors G02B6/3807; Cable clamps
• CPC Class Codes: H02G 15/007 Devices for relieving mechanical stress
• CPC Class Codes: Y10T 29/49908 Joining by deforming

Abstract

The invention relates to a means of cable strain relief (1) comprising a crimping sleeve (3) for the mechanical operative connection of a cable (5) to a crimping neck (2), wherein the crimping sleeve (3) is used in the crimped state for clamping a textile braid (7) of the cable (5) intended for stain relief between the crimping sleeve (3) and the crimping neck (2). At its cable-side end, the crimping sleeve (3) comprises a deformable plastic sleeve (4) that produces a mechanical operative connection in the crimped state between an exterior jacket (6) of the cable (5) and the crimping sleeve (3).

Claims

1. A cable strain relief device (1) comprising:

a crimp sleeve (3) for mechanically operatively connecting a cable (5) to a crimp neck (2), the crimp sleeve (3) being used, in a crimped state, to pinch a fibre braid (7) of the cable (5), which braid is provided for strain relief, between the crimp sleeve (3) and the crimp neck (2), wherein at a cable-side end the crimp sleeve (3) includes a deformable plastic sleeve (4) which, in the crimped state, produces a mechanical operative connection between an outer sheath (6) of the cable (5) and the crimp sleeve (3).

2. The cable strain relief device (1) according to claim 1, wherein an inner diameter of the plastic sleeve (4) matches a diameter of the outer sheath (6) of the cable (5).

3. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) is formed so as to be substitutable.

4. The cable strain relief device (1) according to claim 1, wherein an interior of the plastic sleeve (4) includes operative connection means (12) which, in the crimped state, enter into an operative connection with the cable outer sheath (6).

5. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) comprises a more flexible material than the crimp sleeve (3).

6. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) includes two or more slots.

7. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) includes an anti-kink bush at a rear end.

8. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) is operatively connected to the crimp sleeve (3) by injection moulding.

9. The cable strain relief device (1) according to claim 1, wherein the plastic sleeve (4) is pressed or welded into the crimp sleeve (3) or glued in place therein.

10. A method for producing a cable strain relief device (1), wherein the method comprises the following steps:

a. sliding a plastic sleeve (4) onto a cable sheath (6);

b. sliding a crimp sleeve (3) onto the cable sheath (6);

c. arranging a fibre braid (7) under the cable sheath (6) and freeing the fibre braid (7) from the cable sheath (6) over a defined length;

d. distributing the fibre braid over a clamping face (13) of a crimp neck (2);

e. arranging the crimp sleeve (3) and the plastic sleeve (4) over the crimp neck (2) and the cable sheath (6), respectively, in an operatively interconnected manner.

f. crimping the crimp sleeve (3) onto the crimp neck (2), wherein the plastic sleeve (4) is operatively connected to the cable sheath (6).