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Browse Prior Art Database

Twist-On Cable Strain Relief

IP.com Disclosure Number: IPCOM000049931D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Uberbacher, EC: AUTHOR

Abstract

This article describes a twist-on cable strain relief device which also establishes a cable ground connection.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

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Twist-On Cable Strain Relief

This article describes a twist-on cable strain relief device which also establishes a cable ground connection.

Fig. 1 is a cross-section of the strain relief which includes a unitary, molded body 10 with a tapered throat 12 in a connector region 14 and a tubular opening 16 in a transition region 18. A tapered coil spring 20 is seated in the region 14.

Referring to Fig. 2, strain relief 10 is used in combination with a connector including a body 22 and a tapered projection 24. The tapered projection 24 includes helical ridges 26. In practice, the strain relief 10 is slipped onto a cable 28 before conductors in the cable are inserted into the body 22 through an opening in the tapered projection 24. The ground braid 30 for cable 28 remains outside the tapered projection 24.

Referring to Fig. 3, the strain relief 10 is pushed toward the connector body
22. When the throat 12 reaches the tapered projection 24, the ground braid 30 is forced upward along the surface of the projection. The strain relief 10 is then twisted as it is pushed toward body 22. The tapered coil spring 20 and the helical ridges 26 act as threads to secure and tighten the strain relief.

To establish a ground connection between the braid 30 and an internal connector within the body 22, a conductive path may be molded into the surface of the tapered projection 24.

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