Surface-Mounted Support Bracket for Heavy Electrical Fixtures
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Solution Overview
Problem
Existing electrical junction boxes, especially light-duty ones, are inadequate for supporting heavy-duty electrical devices without requiring costly upgrades or damage to surrounding structures, making it difficult for homeowners to install heavier devices without compromising the integrity of the installation.
Innovation Solution
A surface-mounted electrical device support assembly featuring a support bracket with strategically positioned apertures and a cover plate that allows for secure attachment to structural supports, enabling the connection of heavy-duty electrical devices to light-duty junction boxes without removal or damage, utilizing a galvanized steel construction for enhanced strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a light-duty junction box is used to support heavy-duty electrical devices, then construction costs are minimized, but the structural strength and load-bearing capacity are insufficient
Solution Approach 1:
A support bracket is introduced as an intermediary component between the light-duty junction box and the heavy-duty electrical device. The bracket is secured to structural supports (joists) rather than relying on the junction box's load-bearing capacity, thereby enabling heavy-duty device installation without requiring a heavy-duty junction box.
Solution Approach 2:
The support system is segmented into distinct functional components: the light-duty junction box for electrical connections, the support bracket for mechanical support, and structural supports for load-bearing. This segmentation allows each component to be optimized for its specific function while working together as a system.
2Strength
If a heavy-duty junction box is installed to support heavy-duty electrical devices, then the load-bearing capacity is sufficient, but construction costs increase
Solution Approach 1:
The support bracket serves as a mediator that transfers the load-bearing requirement from the junction box to the structural supports. This allows the use of a less expensive light-duty junction box while still achieving the necessary load-bearing capacity through the bracket-joist connection system.
3Loss of information
If drywall is removed to inspect or replace the junction box, then the junction box rating can be determined, but damage to the surrounding surface occurs
Solution Approach 1:
The support bracket includes a decorative cover that can be painted or finished to match the surrounding ceiling or wall surface. This allows the bracket to be visually concealed, eliminating the need to remove drywall for inspection while maintaining aesthetic appearance.
Solution Approach 2:
The support bracket is designed with accessible apertures and features that allow for inspection and verification of the installation before final cosmetic finishing. This enables determination of the junction box rating and proper installation verification without requiring destructive inspection.
4Strength
If a support bracket is added to enable heavy-duty device installation, then the load-bearing capacity is improved, but the device complexity increases
Solution Approach 1:
The support bracket is designed as a universal component that can be used with various heavy-duty electrical devices (ceiling fans, chandeliers, etc.) and can be installed in different configurations. The standardized apertures and attachment mechanisms provide multi-functionality that reduces overall system complexity despite adding load-bearing capability.
Data Source
AI summary
The electrical device support assembly for securement to a surface is provided. The assembly includes a support bracket having an outer rim, a main region, an inner region, and one or more first apertures configured to secure the support bracket to a pair of structural supports. The outer rim surrounds the main region. The main region surrounding the inner region. The inner region includes one or more second apertures that are configured for mechanical connection of an electrical device to the support bracket.