Trim Ring Friction Fit System for One-Handed Recessed Light Installation
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Solution Overview
Problem
Existing recessed light fixtures, such as can light fixtures, face challenges in secure attachment and adjustment due to difficult access locations, requiring both hands for installation and adjustment, which can lead to safety issues and unsightly gaps between the trim piece and ceiling.
Innovation Solution
A trim system with a retention clip mechanism that secures the trim piece to the trim housing using teeth or beveled edges engaging with the inner surface, allowing one-handed installation and adjustment without the need for rotational alignment, and featuring a design that prevents sagging and easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If springs are used to attach the trim piece to the trim housing, then the trim piece can be secured to the trim housing, but the installation requires both hands and is difficult to perform safely on a ladder
Solution Approach 1:
The retention mechanism is divided into separate functional elements: a retention clip with engagement features that can be manipulated independently, and corresponding engagement surfaces on the trim housing. This segmentation allows the trim piece to be secured through a simpler insertion motion that can be performed with one hand, eliminating the need for complex spring attachment procedures requiring two hands.
2Reliability
If the trim piece is installed using traditional spring mechanisms, then the trim piece can be attached, but it becomes difficult to adjust and remove because the trim piece blocks access to the trim housing bore
Solution Approach 1:
The retention clip is designed to be externally accessible and removable from the trim piece without requiring disassembly or blocking of the trim housing bore. The engagement features are positioned such that the retention clip can be detached from the exterior, allowing easy adjustment and removal of the trim piece while maintaining secure attachment during normal operation.
3Reliability
If the trim piece is secured with springs in the trim housing bore, then the trim piece can be attached, but installers with large hands find it difficult to access the trim housing bore on smaller fixtures
Solution Approach 1:
The retention mechanism transitions from a radial insertion approach (requiring access to the narrow trim housing bore) to an axial or external engagement approach. The retention clip engages with the trim housing from the exterior or through larger access points, eliminating the need for deep insertion into the constrained bore space and making installation accessible to users with various hand sizes.
Data Source
AI summary
A trim system includes a trim housing defining a top trim housing end and a bottom trim housing end, the trim housing defining an inner trim housing surface, the inner trim housing surface defining a trim housing bore extending into the trim housing from the bottom trim housing end towards the top trim housing end, the trim housing bore defining an axis; and a trim piece defining a top trim piece end and a bottom trim piece end, the top trim piece end inserted into the trim housing bore, the trim piece including a retention clip defining a first end and a second end, the first end secured to a base of the trim piece, the second end defining at least one tooth, the at least one tooth cutting into the inner trim housing surface and axially securing the trim piece to the trim housing relative to the axis.