Adjustable Electrical Device Yoke for Flush Wall Mounting

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Electrical devices often get improperly installed in walls, leading to issues like gaps between the device and faceplate, safety concerns, and non-compliance with the National Electrical Code, due to misalignment or improper depth of installation.

Innovation Solution

An adjustable mounting system for electrical devices that allows for adjustment of the yoke's depth and position relative to the electrical box, using mechanisms like screw threads, straps, and friction to ensure proper alignment and support, enabling the device to be flush with the wall face.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the electrical box is installed too far backward into the wall, then the electrical device cannot be flush with the wall face, but moving the electrical device forward creates gaps between the device and faceplate

Engineering Contradiction:
Improvealignment precisionVSAvoidinstallation ease
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The yoke is made adjustable rather than fixed, allowing it to move forward or backward relative to the electrical device housing. This dynamic adjustment enables the yoke to compensate for improper electrical box installation depth, allowing the device to be flush with the wall face while maintaining proper alignment with the faceplate.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The mounting depth parameter of the yoke is made variable through adjustable mechanisms (screw threads, friction clips, or cam actuators). By changing this parameter, the system can adapt to different electrical box installation depths and achieve proper alignment even when the box is installed too far backward.

Inventive Principle:
Principle #35Parameter changes

2Manufacturing precision

If the yoke is made adjustable to allow depth adjustment, then proper alignment can be achieved, but the device complexity increases

Engineering Contradiction:
Improvealignment precisionVSAvoidmounting structure complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The mounting system is divided into separate functional components: the electrical device housing, the adjustable yoke, and the adjustment mechanism. This segmentation allows each component to be optimized independently and simplifies the overall design by assigning specific functions to discrete elements.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The adjustment mechanism is designed to be self-contained within the yoke assembly, using internal components like screw threads or friction clips that automatically maintain the yoke's position once adjusted. This self-service design reduces the need for additional external adjustment mechanisms and simplifies the overall structure.

Inventive Principle:
Principle #25Self-service

3Device complexity

If conventional fixed mounting is used, then the device structure is simple, but improper installation leads to safety concerns and code non-compliance

Engineering Contradiction:
Improvemounting structure complexityVSAvoidinstallation reliability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The fixed yoke is replaced with an adjustable yoke that can dynamically adapt to improper electrical box installations. This ensures reliable, code-compliant installation even when the electrical box is installed too far backward, eliminating safety concerns associated with fixed mounting.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The adjustable mounting system proactively compensates for potential installation errors before they result in non-compliant or unsafe conditions. By allowing adjustment, the system prevents the harmful effects of improper box installation depth, ensuring the device can always be properly aligned and secured.

Inventive Principle:
Principle #9Preliminary anti-action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The adjustable mounting system ensures the electrical device is securely and correctly aligned with the wall, preventing gaps and safety issues, while allowing for proper installation even if the electrical box is misaligned or too far back, thus enhancing both aesthetics and safety.

Implementation Method 1

adjusting a screw threadedly coupled to at least two first brackets, one each coupled to one of each of the two yokes

Methodology Applied
Scientific EffectScrew thread mechanism: Screw

Implementation Method 2

using mechanisms like screw threads, straps, and friction to ensure proper alignment and support

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS8650743B2System for adjustably mounting an electrical device
Publication Date: 2014.02.18 HUBBELL INC
  • US8650743B2 patent drawing
  • US8650743B2 patent drawing
  • US8650743B2 patent drawing

AI summary

An adjustably mountable electrical device with one or more yokes coupled to the electrical device, at least one electrically conductive strap, and an electrical device face, wherein a distance between the electrical device face and at least one of the yoke, the strap and an electrical box mounting screw aperture is adjustable after the electrical device is mounted to the electrical box. The system may comprise mounting flanges that may have threaded hubs or the system may further comprise an electric device having front and back shells moveable on a track in response to depression of a button allowing for movement of the back shell so that the electric device may be mounted having its face coplanar with a front wall surface.