One-Piece Sheet Metal Clip With Spring Lock For Trim
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Solution Overview
Problem
Existing clips for attaching architectural ceiling trim and accessories are prone to distortion when over-tightened, are costly to manufacture, and lack a simple, one-piece design for reliable attachment to suspended ceiling grids and vertical surfaces.
Innovation Solution
A one-piece sheet metal clip with a unique spring lock feature, allowing easy installation and secure attachment to trim strips and vertical surfaces, featuring a cantilever spring design that locks into place with a 'one-way' locking action, enabling easy adjustment and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prior art clips are used to attach trim to ceiling grids, then attachment function is achieved, but the clips can come apart during assembly and cause distortion when over-tightened
Solution Approach 1:
The clip incorporates a spring-loaded cam mechanism that dynamically adjusts during installation. The cam surface guides the trim into proper alignment while the spring provides progressive engagement, allowing the trim to self-align without forcing or distortion. The dynamic interaction between the cam surface and trim channel ensures reliable attachment while preventing over-tightening.
Solution Approach 2:
The clip design enables self-aligning installation where the trim piece automatically positions itself correctly during insertion. The spring-loaded cam mechanism and channel geometry work together to guide the trim into proper orientation without requiring precise manual alignment, eliminating the need for multiple adjustment steps and reducing assembly complexity.
2Reliability
If prior art clips are used, then attachment function is achieved, but manufacturing cost is high due to multiple parts
Solution Approach 1:
The invention merges multiple functional elements into a single integrated clip component. The spring-loaded cam mechanism, attachment fingers, and alignment features are all incorporated into one piece, eliminating the need for separate fasteners, springs, and alignment devices. This consolidation reduces part count, simplifies manufacturing, and lowers assembly costs while maintaining reliable attachment functionality.
3Strength
If a secure attachment is desired, then mounting strength is improved, but the clip becomes difficult to adjust or remove
Solution Approach 1:
The spring-loaded cam mechanism provides a dynamic attachment system that is strong when installed but easily reversible. The spring maintains constant engagement force for secure mounting, while the cam surface geometry allows for simple release by applying minimal force in the opposite direction. This dynamic design enables both strong attachment and easy adjustment or removal as needed.
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 clip provides a cost-effective, distortion-free attachment solution for trim strips and accessories, ensuring secure mounting to ceiling grids and vertical surfaces while allowing for easy adjustment and removal.
Implementation Method 1
The spring geometry allows the clip to readily turn into an upright installed position and in normal service resists a reversal of this twisting locking motion
Implementation Method 2
The spring lock results from a slot formation in the sheet metal that allows a section of the trim engaging part to work as a cantilever spring
Data Source
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AI summary
A single piece sheet metal clip including a trim engaging part and a mounting part extending or extendable from the trim engaging part at a right angle, the trim engaging part having a limited height when the clip is tilted from a vertical portion and a height greater than the limited height when upright whereby the trim engaging part may be inserted between opposed channels on a rear side of a trim strip and upper and lower edges are trapped in a respective channel when rotated from the tilted position to an upright position, the trim engaging part having an integral element resiliently deflected in a channel when the clip is turned upright, said resilient element releasably locking the clip against a reversal of said movement and thereby maintaining the trim engaging part trapped in said channels.