Compound Fenestration Coupling and Sealing System
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Solution Overview
Problem
Existing methods for joining and sealing compound fenestration units are inefficient, often requiring skilled labor and specialized equipment, and may not provide a visually appealing or adaptable solution for various gap arrangements and component combinations.
Innovation Solution
A system featuring interlocking coupling structures with channels and tabs for quick assembly, combined with a dual seal system using lineal sealing stock and end components that include drainage passages, supported by a low-shrink material like aluminum, to create robust and aesthetically pleasing compound fenestration units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional screw and spacer board joining methods are used, then mechanical coupling of component units is achieved, but assembly efficiency is reduced and skilled labor is required
Solution Approach 1:
The coupling member is divided into distinct functional segments: a first coupling member with a channel for receiving a tab from a second coupling member, and a second coupling member with the tab that interlocks into the channel. This segmentation allows for simplified, tool-free assembly while maintaining structural integrity.
2Reliability
If silicone RTV sealant is used for sealing gaps, then effective sealing against rain and wind is achieved, but visual appearance deteriorates and specialized equipment is needed
Solution Approach 1:
A foam sealant is introduced as an intermediary material between the component units and the trim piece. The foam sealant fills the gap effectively for sealing purposes, while the trim piece serves as a visual intermediary that conceals the foam and provides an aesthetically pleasing appearance, eliminating the need for visible silicone RTV.
3Shape
If preformed gaskets or trim materials are used for sealing, then visual appearance is improved, but adaptability to different gap arrangements is reduced
Solution Approach 1:
The foam sealant is used in a dynamic, uncompressed state during installation, allowing it to expand and adapt to various gap sizes and configurations. After the trim piece is installed, the foam provides consistent sealing pressure. This dynamic property enables the same system to adapt to different gap arrangements while maintaining visual appeal through the trim piece.
4Strength
If coupling members extend beyond component unit edges, then structural reinforcement is improved, but device complexity increases
Solution Approach 1:
The coupling members are merged with the trim piece in a integrated assembly process. The trim piece is installed over the interlocked coupling members, combining the structural function of the coupling members with the aesthetic and sealing function of the trim, thereby simplifying the overall device complexity while maintaining structural reinforcement.
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
This system allows for efficient, adaptable, and visually appealing assembly of compound fenestration units with improved sealing against wind and rain, reducing the need for skilled labor and specialized equipment while maintaining structural integrity and appearance.
Implementation Method 1
Applying foam sealant in the gap between the component units and the trim piece
Implementation Method 2
drain passages to convey water to a harmless location
Data Source
AI summary
A system is provided for coupling individual fenestration units together and sealing the gaps between them so as to form a sealed compound fenestration unit. The individual fenestration units include mating channels and tabs, or other connectors, that are attached to outside frame surfaces of the individual fenestration units. When the connectors are coupled together, they attach the frames of the individual fenestration units securely together in such a way that gaps are formed between the units along their joined frame surfaces. The gaps are sealed by resilient sealing strips that are configured to be inserted into the gaps, and that are formed with seals that bear against the walls of the gaps to form impervious moisture seals.