Torsion Resistant Wiring Device Stabilization
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Solution Overview
Problem
Electrical wiring devices face structural and electrical integrity issues due to misalignment and forces applied during installation, leading to distortion and damage, with existing solutions being unreliable and costly.
Innovation Solution
An electrical wiring device with a conductive mounting strap and shutter stabilization elements that provide rigidity and resistance to bending and twisting forces, featuring a central strap portion with stabilization elements aligned askew to the mounting strap, forming a three-dimensional reinforcing structure that interconnects the user-accessible portion and the rear surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a conventional wiring device housing is used, then the device can be installed and operated, but the housing becomes distorted and damaged due to bending and twisting forces applied during installation misalignment
Solution Approach 1:
The housing is divided into multiple segments including a front cover, back body, and mounting strap with stabilization elements. These segmented components work together to distribute and resist installation forces, preventing distortion of the overall housing structure while maintaining installation reliability
Solution Approach 2:
The housing employs composite construction with a mounting strap containing stabilization elements integrated between the front cover and back body. This composite structure provides enhanced strength and rigidity to resist bending and twisting forces during installation, resolving the contradiction between housing strength and installation reliability
2Stability of the object's composition
If the wiring device housing is made more rigid to resist installation forces, then structural integrity is improved, but manufacturing complexity and cost increase
Solution Approach 1:
Rather than making the entire housing uniformly rigid, the patent applies stabilization elements specifically at critical locations within the mounting strap where bending and twisting forces are most severe. This localized reinforcement achieves the necessary housing stability while minimizing overall manufacturing complexity
Solution Approach 2:
The stabilization elements are positioned in a three-dimensional arrangement within the mounting strap, creating a reinforcing structure that resists forces from multiple directions. This spatial configuration provides enhanced stability without requiring complex external components or assembly procedures
3Strength
If stabilization elements are added to the mounting strap, then resistance to bending and twisting forces is improved, but manufacturing cost increases
Solution Approach 1:
The stabilization elements are integrated directly into the mounting strap structure, merging the reinforcing function with the existing mounting components. This consolidation achieves enhanced strength while avoiding the need for separate manufacturing processes or additional assembly steps that would increase manufacturing complexity and cost
Data Source
AI summary
An electrical wiring device includes a device housing that has a front cover having a user-accessible portion having at least one set of receptacle openings formed therein. The housing also includes a back body having a major rear surface. A mounting strap includes a central strap portion. A stabilization structure includes a plurality of shutter stabilization elements coupled to the central strap portion and disposed in a substantially balanced array around the central strap portion. The plurality of shutter stabilization elements extends through the back body to form a three-dimensional reinforcing structure that rigidly interconnects the user-accessible portion and the major rear surface.