Connector Strain Relief Assembly for Cable Clamping Stability
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Solution Overview
Problem
Existing strain relief devices for electrical connectors often fail to provide adequate clamping force to prevent damage to cables due to low tensile forces, leading to potential movement and damage.
Innovation Solution
A strain relief device with a cylindrical portion that fits within a connector housing, generating clamping force through insertion, and arms that engage with locking features on the housing to secure the device, preventing axial and angular movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a strain relief device is secured to the cable and connector using conventional methods (housing parts or mechanical fasteners), then the device can be installed, but adequate clamping force is not provided to prevent cable damage from tensile forces
Solution Approach 1:
The strain relief device is divided into multiple functional segments: a cylindrical portion that provides clamping force within the housing opening, and arms with locking features that engage with the housing outer surface. This segmentation allows each part to perform its specific function optimally, with the cylindrical portion providing radial clamping and the arms providing axial positioning.
Solution Approach 2:
The cylindrical portion of the strain relief device is inserted into the opening defined by the connector housing, creating a nested configuration where the strain relief device is positioned within the housing structure. This nesting ensures proper alignment and enables the clamping force to be applied at the correct location.
2Stability of the object's composition
If the strain relief device is designed with arms that engage locking features on the housing, then axial and angular movement is prevented, but the device structure becomes more complex
Solution Approach 1:
The arms of the strain relief device are designed to be deformable, allowing them to flex during installation as they engage with the locking features on the housing. This dynamic characteristic enables the arms to accommodate manufacturing tolerances and apply consistent locking force without requiring overly complex adjustment mechanisms.
Solution Approach 2:
The arms are constructed as flexible elements that can deform elastically to engage with the locking features. This flexibility allows the arms to conform to the housing geometry and maintain reliable engagement while keeping the overall device structure relatively simple.
Data Source
AI summary
A terminal assembly includes a connector housing having an opening at a first end for receiving a cable and a strain relief device. The opening of the connector housing is defined by an inner surface. The strain relief device includes an annular base and a cylindrical portion extending from the annular base, wherein the cylindrical portion has an inner surface having a diameter selected to surround the cable and an outer surface having an outer diameter configured to fit within the opening of the connector housing.