Electrical Box Extender Assembly for Block Wall Mounting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electrical box extenders for concrete or cinder block walls require numerous additional fasteners and holes, increasing complexity and cost due to the greater wall thickness compared to standard studded interior walls.
Innovation Solution
An electrical box extender assembly with a tubular extender and cover that minimizes the number of parts and fasteners needed, featuring projections and flanges for secure mounting within a block wall, allowing utility boxes to be recessed without interference from interior surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If conventional extension devices are used to increase electrical box depth, then the electrical box can be installed in block walls, but the number of fasteners and holes increases
Solution Approach 1:
The extender body integrates multiple functions into a single component: it provides depth extension, includes integrated flanges for mounting, and incorporates fastener holes directly in its structure. This merging eliminates the need for separate extension brackets and reduces the total number of fasteners required, as the extender body itself serves as both the extension element and the mounting structure.
Solution Approach 2:
The extender body is designed as a multi-functional component that simultaneously extends the electrical box depth, provides mounting surfaces through integrated flanges, and includes pre-formed fastener holes for secure attachment. This universal design allows a single component to perform multiple functions that would traditionally require separate parts, thereby reducing overall device complexity.
2Strength
If additional fasteners and holes are used to extend the electrical box, then the box can be secured in block walls, but manufacturing cost increases
Solution Approach 1:
The extender body combines the extension function with integrated mounting flanges and fastener holes into a single molded or formed component. This integration reduces the total part count and eliminates the need for separate extension brackets, thereby simplifying manufacturing processes and reducing material costs while maintaining secure mounting capability through the integrated flange structure.
Solution Approach 2:
The extender body utilizes dimensional parameters and geometric configurations optimized for block wall installation, with flange dimensions and fastener hole placements designed to provide secure mounting with fewer fasteners. By carefully selecting and optimizing these geometric parameters, the design achieves strong mounting security while minimizing the number of fasteners and simplifying manufacturing.
3Ease of operation
If conventional outlet boxes are used in block walls, then installation is straightforward, but the wall thickness interferes with utility box function
Solution Approach 1:
The solution segments the electrical box system into two distinct components: the original electrical box and the separate extender body. This segmentation allows the electrical box to remain unchanged and easily installed, while the extender body provides the additional depth needed for block wall applications. The extender attaches to the electrical box, effectively extending its functional depth without complicating the installation of the box itself.
Solution Approach 2:
The extender body is pre-formed with integrated flanges and fastener holes during manufacturing, so that when installed, it requires minimal assembly steps. The pre-configured mounting features allow for quick attachment to the electrical box and secure installation in block walls, maintaining installation simplicity while providing the necessary depth extension.
Data Source
AI summary
An electrical box extender assembly includes an electrical box having four side walls, and a back wall defining a cavity therein. A first of the four side walls of the box includes a first projection extending substantially transversely of the cavity. A substantially tubular extender having a first side wall including a first flange extending transversely thereon, and a tubular base extending transversely thereof. The first flange and tubular base are spaced from one another and a first fastener extends through the first projection, first flange and tubular base to couple the tubular extender to the electrical box.