Snap-on Skin Attachment for Wall Frame Tolerance Compensation
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Solution Overview
Problem
Existing interior space-dividing wall systems face challenges in securely attaching large skins or panels to upright frame members due to complex and costly engagement structures, which fail to effectively compensate for manufacturing and assembly tolerances, particularly in lateral dimensions.
Innovation Solution
A snap-on attachment structure featuring vertically elongate resilient attachment strips with cantilevered spring legs and coil-shaped head portions that cooperate with projections on the frame members, allowing for secure mounting and compensation of lateral tolerances through a resilient gripping engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elongate hook strips are used to engage slots in the upright frame member, then the skin can be attached to the frame, but the structure becomes complex and costly, and cannot compensate for tolerance variations
Solution Approach 1:
The attachment structure is divided into discrete resilient projections on the skin and corresponding recesses in the frame members. Each projection-recess pair acts as an independent attachment point, allowing the system to achieve secure attachment through multiple simple segments rather than one complex continuous structure.
Solution Approach 2:
The resilient projections are designed with specific material properties and geometric parameters ( curvature, size, elasticity) that allow them to deform and compensate for tolerance variations. By changing the physical parameters of the attachment elements rather than the overall structure complexity, the system achieves both simplicity and tolerance compensation.
2Ease of manufacture
If a deformable mushroom-shaped head projection is inserted into a frame groove, then the skin can be mounted on the frame, but lateral dimensional tolerances cannot be compensated without affecting the gripping engagement
Solution Approach 1:
The resilient projections are designed to be dynamically flexible rather than rigid. They can deform laterally to accommodate tolerance variations while maintaining gripping engagement, and return to their original position to provide secure attachment. This dynamic behavior allows the system to handle manufacturing imprecisions without compromising mounting capability.
Solution Approach 2:
The resilient nature of the projections provides beforehand cushioning against lateral tolerance variations. The elasticity is built into the design to anticipate and absorb dimensional variations that occur during manufacturing and assembly, preventing these variations from affecting the gripping engagement.
3Manufacturing precision
If resilient attachment strips with spring legs and coil-shaped head portions are used, then lateral tolerances can be compensated, but the structure becomes more complex
Solution Approach 1:
The spring leg and coil-shaped head portion are merged into a single integrated resilient projection element rather than separate components. This merging reduces the number of parts and assembly steps while maintaining the tolerance compensation functionality, as the entire projection can deform and adapt to lateral variations.
Solution Approach 2:
The resilient projections are self-adjusting and require no external adjustment mechanisms. They automatically adapt to lateral tolerance variations through their inherent elasticity, serving their own alignment and compensation functions without additional complex control systems or adjustment devices.
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 snap-on attachment structure provides secure and efficient mounting of skins on upright frame members while compensating for manufacturing and assembly tolerances, ensuring proper alignment and preventing vertical sliding of the skins, thus enhancing the stability and aesthetics of the wall system.
Implementation Method 1
The elongated length and configuration of the spring legs, in comparison to the shape and size of the head portions, permit the snap-on spring strip to compensate for at least limited lateral or sideward displacement of the spring strip relative to the projection
Data Source
AI summary
A snap-on attachment structure for attaching a side skin to an upright frame of a wall system. The attachment structure includes resilient attachment strips secured to the rear of the skin and extending along upright edges thereof. Each strip cooperates with a projection formed on an upright frame member and extending vertically therealong. The snap-on strip has a pair of cantilevered spring legs which protrude outwardly in angled relationship. The spring legs adjacent outer ends are provided with coil-shaped head parts which protrude inwardly toward one another. The head parts have hollow arcuate configurations and move into gripping engagement with shallow arcuate recesses formed on opposite sides of the projection.