Stress relief apparatus for an electrical conductor

Details Stress relief apparatus for an electrical conductor Stress relief apparatus for an electrical conductor

1998-09-28

2001-05-29

Vu, Hien (Department: 2833)

Electrical connectors

Contact comprising cutter

Insulation cutter

C439S369000, C439S445000, C439S460000, C439S725000

Reexamination Certificate

active

06238236

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to electrical systems generally, and more specifically to stress relief apparatus for electrical conductors such as wires and cables.
DESCRIPTION OF THE RELATED ART
Many electrical systems require a stress relief mechanism to be used for wires that connect components together. The stress relief mechanism prevents a tensile load on a wire from being transmitted to the device to which the wire is connected. In some instances, the stress relief prevents the wire from becoming disconnected from the device. In other configurations, the stress relief prevents damage to the device to which the wire is connected.
Common types of stress relief in the electrical arts include: (1) a clamp member that is attached to a housing or junction box by a screw or similar fastener; (2) wire saddles; (3) tie wraps; and (4) a pair of members in a “U” or “V” shaped to grip the conductor by an interference fit.
Many product design specifications require that the conductors or cables satisfy a minimum cable pull out force criterion. This may be difficult to achieve with the above-listed stress relief devices. Although the screw-mounted clamp member can satisfy a minimum pull out force requirement, it requires a tool, takes a relatively long time to install, and is liable to damage a cable if too much torque is applied to the screw. It is more difficult to ensure that the minimum pull out force requirement is satisfied with the other three types of stress relief apparatus listed above.
An improved stress relief apparatus is desired.
SUMMARY OF THE INVENTION
The present invention is an apparatus for relieving stress in a cable, including a base having a plurality of pins projecting from the base, in an axial direction; and a clip, detachably mounted on the base, the clip having an engaging surface normal to the axial direction, such that the cable is gripped between the pins and the engaging surface when the clip is attached to the base, to provide stress relief.


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