Gangable Electrical Box with Snap-Fit Modular Walls
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Solution Overview
Problem
The existing electrical box systems require multiple sizes to accommodate different electrical components, leading to increased manufacturing and inventory costs due to the need for various box sizes.
Innovation Solution
A gangable electrical box design featuring a U-shaped box member with interfitting snap-fit connections allows for toolless attachment of side walls, enabling the formation of boxes of various configurations and sizes using multiple U-shaped box members and side walls, eliminating the need for different box sizes and reducing inventory and installation time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple sizes of electrical boxes are manufactured to accommodate different electrical components, then the adaptability to different component configurations is improved, but the manufacturing complexity and inventory requirements increase
Solution Approach 1:
The electrical box is divided into modular components: a U-shaped box member with end walls and separate side walls that can be attached in different configurations. This segmentation allows a single base component to be adapted into multiple box sizes and configurations by simply adding or removing side walls, eliminating the need to manufacture multiple complete box sizes.
Solution Approach 2:
The U-shaped box member serves as a universal base component that can function as the foundation for multiple different electrical box configurations. By designing the end walls with standardized snap-fit connections, the same U-shaped member can accommodate single-gang, double-gang, or other configurations by varying the number of side walls attached, making one component serve multiple functions.
2Strength
If traditional electrical box assembly methods using tools and hardware are used, then the structural strength is improved, but the installation time and labor requirements increase
Solution Approach 1:
The traditional mechanical fastening system (screws, nails, or other hardware requiring tools) is replaced with a snap-fit connection system. The interdigitated tabs and slots create a mechanical interlocking mechanism that can be assembled by hand without tools, significantly reducing installation time while maintaining structural integrity through the interlocked design.
Solution Approach 2:
The snap-fit connection system is designed to be self-assembling without requiring external tools or additional hardware. The interdigitated tabs and slots automatically engage when the side walls are positioned against the U-shaped box member, allowing the components to fasten themselves through simple manual manipulation, thereby eliminating the need for tools and reducing labor requirements.
Data Source
AI summary
A gangable electrical box includes a U-shaped box member having a generally rectangular back wall including opposed back wall ends. An end wall extends from each of the back wall ends. Each of the end walls has opposed longitudinal edges. The gangable box further includes a pair of generally rectangular side walls where each side wall has opposed side wall ends. The side wall ends are attachable to the U-shaped box member to define an open ended box interior. The longitudinal edges of the end walls and the opposite ends of the side walls include interfitting snap fit connection for toolless attachment of the side walls to the box member.