Curvilinear Retrofit Electrical Box for Stud-Clear Wall Mounting
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Solution Overview
Problem
Existing retrofit electrical box assemblies face challenges in installation flexibility and strength due to limited fastening methods, inability to accommodate studs near wall openings, and lack of integrated tools for precise positioning, leading to deformations and gaps.
Innovation Solution
A one-gang retrofit electrical box assembly device with curvilinear design and multiple fastening mechanisms, including screws and a flexible L-shaped ratchet strap, along with an embedded alignment-positioning-leveling-marking tool, ensures secure attachment, flexibility, and efficient installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional fastening mechanisms are positioned within the box geometry, then the box can be secured to the wall, but installation becomes impossible when studs are near or at the border of the wall opening and significant interior space is consumed
Solution Approach 1:
The fastening mechanism is divided into two separate components: an exterior mounting bracket that attaches to the wall and an interior box that holds electrical devices. This segmentation allows the fastening mechanism to be positioned outside the box geometry, eliminating the conflict between stud location and fastening mechanism placement, while also freeing up interior space within the box.
Solution Approach 2:
The fastening mechanism transitions from a two-dimensional planar attachment within the box to a three-dimensional exterior mounting system. The L-shaped bracket extends perpendicular from the wall surface, creating a new spatial dimension for attachment that avoids conflicts with stud locations and maximizes interior volume.
2Adaptability or versatility
If only one type of fastening mechanism is provided, then the device structure is simple, but installation flexibility and strength are restricted
Solution Approach 1:
The electrical box assembly is designed with multiple types of fastening mechanisms (screw holes in the mounting bracket and clamp attachment points) that can accommodate different wall types and stud configurations. This multi-functionality allows the same device to be installed in various scenarios without requiring multiple different box types.
3Productivity
If no integrated positioning tool is provided, then the device structure is simpler, but installation time and resource consumption increase due to lack of precise positioning capability
Solution Approach 1:
The positioning tool is merged with the electrical box assembly, combining the functional electrical box with an integrated alignment and positioning system. This includes alignment tabs that fit into corresponding slots and positioning marks that guide precise installation, eliminating the need for separate positioning tools and reducing installation time.
Solution Approach 2:
The positioning tool provides preliminary alignment and positioning guidance before the final fastening operation. Alignment tabs and positioning marks are pre-configured to guide the installer in correctly positioning the box relative to the wall opening and studs, ensuring accurate installation before securing the fastening mechanisms.
4Reliability
If curvilinear design is not used, then manufacturing is simpler, but box deformations and gaps between electrical boxes and wall openings occur
Solution Approach 1:
The electrical box incorporates curvilinear design elements with rounded corners and curved edges rather than sharp angles. This curvature distributes mechanical stresses more evenly across the box structure, preventing deformations under load. The curved design also allows the box to better conform to the wall opening shape, eliminating gaps between the box and wall surface.
Data Source
AI summary
A one-gang retrofit (old work) electrical box assembly device for low voltage applications is described which comprises a frame with a curvilinear closed thin-walled section configured to fit into a curvilinear wall opening, including an electrical device mounting interface used to secure a low voltage electrical devices, and featuring two types of a wall attachment means integrated by fastening and locking mechanisms to secure the frame to a wall and within the curvilinear wall opening; where none of the referred constituting components of the one-gang retrofit (old work) electrical box assembly device for low voltage applications protrudes beyond defined limits, making this design the only that do not collide with a vertical or horizontal studs behind the wall, near or just in a borders of the wall opening where it has to be installed, while maximizing internal dimensions, robustness, versatility and strength.