Ventilation Fan Trim Ring Mounting Assembly for Tool-Free Installation
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Solution Overview
Problem
The installation of objects like fans and light fixtures in structural members, such as ceilings and walls, is complex and time-consuming, often requiring access to the back side of the structural support, use of fasteners and tools, and is not easily adaptable to different thicknesses of structural members.
Innovation Solution
A mounting system comprising a housing with flanges and tab openings, and a trim ring with resilient tabs that can be mounted from the room side without tools, allowing for secure installation and adjustment to accommodate various structural member thicknesses, and a cover with a connector and standoff to hold the trim ring in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mounting methods are used, then secure fastening is achieved, but installation complexity and time increase
Solution Approach 1:
The trim ring's resilient tabs automatically engage with the housing's tab openings through elastic deformation, creating a self-locking mechanism that secures the trim ring without requiring external fasteners or tools. The resilient nature of the tabs provides both the securing force and the accommodation for thickness variations.
Solution Approach 2:
The resilient tabs act as an intermediary element between the trim ring and the housing, transferring the securing function from a direct rigid connection to a flexible elastic connection. This intermediary mechanism enables both secure mounting and accommodation of dimensional variations.
2Reliability
If access to the back side of the structural member is required, then proper fastening is possible, but installation time and accessibility requirements increase
Solution Approach 1:
The mounting system inverts the traditional approach by performing the fastening operation from the front side of the structural member rather than requiring access to the back side. The resilient tabs engage from the front, eliminating the need for attic or crawl space access.
Solution Approach 2:
The resilient tabs self-engage with the tab openings from the front side, automatically securing the trim ring without requiring the installer to reach behind the structural member. The elastic deformation of the tabs provides the securing force from the accessible front side.
3Manufacturing precision
If fixed mounting dimensions are used, then manufacturing precision is maintained, but adaptability to different structural member thicknesses decreases
Solution Approach 1:
The system changes the physical state of the mounting tabs from rigid to resilient, allowing them to elastically deform and accommodate variations in structural member thickness. The resilient tabs can compress or extend within elastic limits to match different thicknesses while maintaining secure engagement.
Solution Approach 2:
The mounting system transitions from a static rigid connection to a dynamic elastic connection. The resilient tabs can adjust their position and deformation level based on the structural member thickness, providing adaptability while maintaining secure mounting through elastic recovery force.
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
Enables secure, tool-free installation of objects from the room side, reducing installation time and complexity, and accommodating different structural member thicknesses, while providing an aesthetic appearance and effective air and vapor movement.
Implementation Method 1
at least one resilient tab sized and shaped to be deformed to engage the tab opening in the housing
Data Source
AI summary
A system for mounting an object in an opening in a structural member that has opposing first and second surfaces, the system including a housing with an interior to house the object and receivable within the opening in the structural member, the housing having at least one bendable tab to bear against and support the housing on the first surface of the structural member, the housing further including at least one pair of openings, and a trim ring having an interior side and an opposing exterior side, the interior side having one tab shaped to engage an opening in the pair of openings, the trim ring further including at least a second tab sized and shaped to engage an opening in a second pair of openings in the housing and thereby hold the trim ring in place on the housing while bearing against the second surface of the structural member.