Chassis Fenestration Groove Ridge Covers
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Solution Overview
Problem
Vinyl fenestration systems face challenges in matching the aesthetic appeal of wood systems while maintaining performance characteristics, with issues such as visible welds, limited color options, and durability concerns with current masking methods.
Innovation Solution
A chassis-based fenestration system using polymeric materials with longitudinal grooves and ridges for engagement and support, allowing for the use of covers to conceal welds and provide aesthetic options without compromising structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vinyl extrusions are welded at corners for strength and ease of manufacturing, then structural integrity and manufacturing efficiency are improved, but aesthetic appearance deteriorates due to visible weld flanges
Solution Approach 1:
The fenestration frame is divided into separate components: a vinyl chassis that provides structural strength through welded corners, and separate decorative covers that conceal the welds. The covers are detached elements that can be applied after welding, allowing the structural and aesthetic functions to be performed by different components.
Solution Approach 2:
Decorative covers act as an intermediary element between the structural chassis and the external environment. These covers hide the unsightly weld flanges while allowing the welded chassis to maintain its structural integrity. The intermediary cover resolves the conflict by providing aesthetic coverage without interfering with the structural welding.
2Productivity
If color is added to vinyl compositions before extrusion, then manufacturing efficiency is improved, but aesthetic versatility deteriorates due to limited color options
Solution Approach 1:
The color function is segmented from the structural function. Instead of adding color to the vinyl extrusion itself (which limits options), the color is applied to separate decorative covers that can be produced in various colors and attached to the standard vinyl chassis. This allows efficient production of the chassis while providing versatile color options through the covers.
Solution Approach 2:
The color parameter is changed from being an intrinsic property of the vinyl material to being a property of the detachable covers. This allows the same chassis to be used with different colored covers, providing color versatility without requiring multiple vinyl extrusion formulations or processes.
3Shape
If shadow grooving is used to clean weld sites on white vinyl, then aesthetic appearance is improved, but manufacturing complexity increases due to thicker wall requirements
Solution Approach 1:
Instead of modifying the vinyl extrusion process to create shadow grooves (which increases manufacturing complexity), decorative covers are used as an intermediary to conceal the welds. This approach achieves the aesthetic goal without requiring complex manufacturing modifications or thicker wall extrusions.
Data Source
AI summary
A fenestration system includes a chassis formed from left and right chassis stiles, and top and bottom chassis rails. The left and right chassis stiles having an outside longitudinal groove, an outside longitudinal ridge, an inside longitudinal groove and an inside longitudinal ridge. The top and bottom chassis rails having an outside longitudinal groove, an outside longitudinal ridge, an inside longitudinal groove and an inside longitudinal ridge. Outside stile covers are configured to engage the longitudinal outside groove and the longitudinal outside ridge of the chassis stile. Inside stile covers are configured to engage the inside longitudinal groove and the inside longitudinal ridge of the chassis stile. Outside rail covers are configured to engage the longitudinal outside groove and the longitudinal outside ridge of the chassis rail. Inside rail covers are configured to engage the inside longitudinal groove and the inside longitudinal ridge of the chassis rail.