Adjustable Fixture Mounting Brace for Engineered Joist Flanges
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical fixture mounting assemblies struggle to securely attach to engineered ceiling joists, which have a narrow flange structure, as conventional tension-type braces are not designed to engage the flanges effectively.
Innovation Solution
The electrical fixture mounting assembly includes a brace assembly with a hanger body, plug, adjustment member, fixed and swivel end caps, and an extension assembly, allowing for adjustable length and secure engagement with engineered joists and solid wood joists, using joist engaging members to apply tension forces for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional tension type braces are used, then they can be easily installed between ceiling joists, but they cannot securely engage with the narrow flanges of engineered joists
Solution Approach 1:
The end cap is designed with a localized engagement feature (protrusion or hook) that specifically targets and engages the narrow flange of engineered joists, while the rest of the brace maintains its conventional tension-type structure for easy installation between joists
Solution Approach 2:
The brace is segmented into a main body portion for tension installation and an end cap portion with specialized engagement features, allowing each segment to perform its specific function optimally
2Reliability
If the brace ends are designed to contact the narrow flanges of engineered joists, then secure engagement is achieved, but the brace structure becomes more complex
Solution Approach 1:
The engagement feature is merged directly into the end cap structure, which is already part of the brace assembly, rather than adding a separate engagement mechanism. The end cap serves both as a structural element and as the engagement feature
Solution Approach 2:
Instead of designing the main brace body with complex engagement features, the inversion approach uses a simple end cap attachment to provide the engagement functionality, keeping the main brace structure simple
Data Source
AI summary
A mounting assembly is provided for quick and easy attachment to engineered joists. The mounting assembly includes a brace assembly and a mounting bracket. The mounting assembly may also include an electrical box. The brace assembly is an adjustable member that extends between flanges of engineered ceiling joists. The brace assembly has two low profile end caps that can engage the flanges of engineered ceiling joists and apply a force against the flanges when tightened. The mounting bracket is connected to a hanger body of the brace assembly by a snap fit and the electrical box is attached to the mounting bracket.