Adjustable Sealed Electrical Box for Vapor-Tight Wall Mounting
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Solution Overview
Problem
Existing electrical boxes face challenges in being easily repositioned during installation due to complex mounting systems and rigid flanges that disrupt vapor barriers, leading to inefficiencies and imperfections in wall construction.
Innovation Solution
An adjustable electrical box assembly with a sliding bracket and adjustable sealing element that allows for secure fastening to studs and accommodates wall inconsistencies, featuring a flexible vapor barrier to maintain planar surfaces and prevent air leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional fastening devices are used to secure electrical boxes to wall studs, then the electrical box can be firmly mounted, but repositioning requires complete removal and formation of additional apertures, increasing installation time and complexity
Solution Approach 1:
The mounting system transitions from a static fixed position to a dynamic adjustable position through the threaded rod mechanism. The electrical box can be moved along the stud within the aperture while maintaining secure attachment, enabling repositioning without removing fasteners or creating additional apertures.
Solution Approach 2:
The mounting system is divided into separate functional components: the bracket with aperture, the threaded rod for adjustment, and the fastening mechanism. This segmentation allows the electrical box to be securely mounted while providing independent adjustment capability along the stud.
2Adaptability or versatility
If adjustable outlet boxes with brackets and adjustment mechanisms are used, then the face of the outlet box can be adjusted flush with the wall surface, but the design becomes complex, increasing production costs
Solution Approach 1:
The bracket serves multiple functions: it provides the mounting attachment point to the stud, creates the aperture for the threaded rod, and establishes the adjustment mechanism. This multi-functionality reduces the need for separate components and simplifies the overall design.
Solution Approach 2:
The mounting bracket and adjustment mechanism are combined into a single integrated system. The bracket contains the aperture and works with the threaded rod to provide both secure mounting and positional adjustment, eliminating the need for separate complex adjustment devices.
3Strength
If rigid flanges are used to extend from the electrical box to abut the vapor barrier, then the box structure maintains rigidity, but the rigid flange causes ripples or imperfections in wall surfaces due to tolerance variations in studs and wall components
Solution Approach 1:
The vapor barrier is implemented as a flexible thin film that can accommodate variations in stud positioning and wall component tolerances. This flexibility allows the vapor barrier to conform to the actual wall structure without creating surface imperfections, while the electrical box itself maintains its structural rigidity.
Solution Approach 2:
The system transitions from a rigid flange configuration to a flexible vapor barrier configuration. The vapor barrier's flexibility parameter allows it to adapt to dimensional variations in the wall assembly, eliminating the transmission of rigidity-induced imperfections to the wall surface.
4Ease of operation
If the electrical box penetrates the vapor barrier for installation, then the box can be mounted in the wall structure, but the vapor barrier integrity is compromised, allowing air leakage
Solution Approach 1:
The vapor barrier acts as an intermediary element that spans across the electrical box penetration. Rather than the box directly breaking the vapor barrier, the barrier is configured to extend over and seal around the box, maintaining the continuous vapor barrier function while allowing the electrical box to be installed through the wall structure.
Data Source
AI summary
An electrical box assembly for installation in a wall structure having a support member includes an electrical box having a front face with a front opening opening leading into an interior of the electrical box, a bracket slidably coupled to an outer circumferential surface of the electrical box with the bracket configured to be securely coupled to the support member of the wall structure, a sealing element disposed on the electrical box at or adjacent the front face thereof with the sealing element configured to form a seal with an inner facing surface of the wall structure, and an adjustment mechanism configured to selectively adjust a position of the electrical box relative to the bracket with respect to an axial direction of the electrical box to adjust a sealing force present between the sealing element and the wall structure.