Electrical Pass-Through Cap Assembly for Secure Wire Retention
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Solution Overview
Problem
Existing electrical pass-through assemblies lack an effective mechanism to securely retain conductive wires in place, particularly when they extend through barriers such as walls, leading to potential dislodgment and safety hazards.
Innovation Solution
A cap assembly with a cap portion and claw portion that includes angled lock surfaces and twist surfaces, along with guide supports and claw locks, to securely engage and retain the wire in position, preventing rotational movement and ensuring stable attachment to a housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a simple cap structure is used to allow wire passage through the barrier, then the device complexity is reduced and ease of manufacture is improved, but the wire retention reliability deteriorates leading to potential dislodgment
Solution Approach 1:
The cap assembly is divided into distinct functional segments: a cap portion with lock surfaces for engagement, a claw portion with resilient fingers for wire gripping, and a housing portion. This segmentation allows each component to perform its specific function effectively while maintaining overall reliability without excessive complexity.
Solution Approach 2:
The claw portion incorporates resilient fingers that can dynamically deflect and adapt to the wire during insertion and retention. The fingers can flex to accommodate the wire and then maintain continuous gripping force, providing reliable retention through dynamic mechanical response rather than rigid fixation.
2Reliability
If a secure wire retention mechanism is implemented, then the wire retention reliability is improved, but the ease of operation deteriorates due to complex assembly requirements
Solution Approach 1:
The lock surfaces are pre-configured on the cap portion and the resilient fingers are pre-positioned on the claw portion during manufacturing. This preliminary arrangement ensures that when the components are assembled, the wire retention function is automatically activated without requiring additional adjustment or complex operational steps by the user.
Solution Approach 2:
The resilient fingers automatically engage the wire and lock into position through their own elastic deformation when the cap assembly is installed. The mechanism serves itself by using the natural elasticity of the fingers to create and maintain retention force without requiring external actuation or complex assembly procedures.
3Ease of operation
If the cap portion is made movable relative to the claw portion for easy assembly, then the ease of operation is improved, but the stability of the assembled structure may deteriorate
Solution Approach 1:
The cap assembly is segmented into movable and fixed portions that can be independently assembled. The cap portion can be moved relative to the claw portion during assembly, but once assembled, the segments are locked together through the engagement of lock surfaces and resilient fingers, providing both ease of assembly and operational stability.
Data Source
AI summary
A cap assembly for an electrical pass-through includes a cap portion and a claw portion. The cap portion has a cap base that defines a cable axis. The cap portion has a plurality of angled lock surfaces and twist surfaces adjacent to the lock surfaces. The claw portion has a claw body with a claw opening that the cable axis extends through. The claw portion also has fingers that extend from the claw body towards the cap portion. The cap portion is movable relative to the claw portion to a locked position wherein each of the fingers engages one of the lock surfaces and is deflected toward the cable axis and each of the fingers engages one of the twist surfaces and is rotated relative to the claw base.