Coupled Window Cover List Mounting Thin Sash
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Solution Overview
Problem
Existing windows with low U-coefficients for heat loss also suffer from aesthetic issues due to thick inner sash structures, reduced light transmission, and increased costs, as well as vulnerability to deformation under wind loads and UV damage.
Innovation Solution
A coupled window design featuring a cover list with a cover and anchor to secure the double-glazing in a recess, allowing for a thinner inner sash with a stronger, more aesthetically pleasing structure, improved light transmission, and enhanced UV protection, while maintaining a low U-coefficient and high Net Energy Gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional inner sash structure with bars and ribs is used to secure double-glazing, then the double-glazing is securely mounted, but the inner sash becomes thick and aesthetically unpleasing
Solution Approach 1:
The invention extracts the mounting function from the traditional bar-rib structure and relocates it to the cover list with anchor elements. The cover list is mounted on the outer sash rather than requiring thick inner sash bars, separating the mounting function from the inner sash structure itself.
Solution Approach 2:
The invention moves the mounting mechanism from the inner sash to the outer sash dimension. The cover list and anchor elements are positioned on the outer sash, changing the spatial dimension where the securing function is implemented, thereby allowing the inner sash to remain thin.
2Reliability
If a thick inner sash structure is used to secure double-glazing, then the mounting is reliable, but light transmission is reduced
Solution Approach 1:
The mounting function is extracted from the inner sash structure and relocated to the outer sash cover list, removing the obstruction to light transmission that thick inner sash bars would create.
Solution Approach 2:
Instead of mounting the cover list on the inner sash as in conventional designs, the invention inverts the approach by mounting it on the outer sash, which does not obstruct the light transmission path through the window.
3Reliability
If conventional mounting structures are used, then the double-glazing is secured, but the structure is vulnerable to UV damage and deformation
Solution Approach 1:
The cover list is made from UV-stabilized plastic material that combines structural integrity with resistance to UV degradation and wind load deformation, creating a composite solution that addresses both mounting reliability and environmental resistance.
Solution Approach 2:
The invention changes the material parameters of the cover list by using UV-stabilized plastic with specific mechanical properties that provide both strength for secure mounting and resistance to environmental factors like UV radiation and wind loads.
4Reliability
If traditional inner sash structures are used, then mounting is achieved, but manufacturing complexity and costs increase
Solution Approach 1:
The mounting function is extracted from the complex inner sash bar-rib structure and simplified by relocating it to a separate cover list component on the outer sash, reducing the complexity of the inner sash structure.
Solution Approach 2:
The invention segments the window assembly into distinct functional components: the inner sash for light transmission, the outer sash for structural support and mounting, and the cover list with anchor elements for securing the double-glazing. This segmentation allows each component to be optimized independently.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
A coupled window comprises an outer sash (2) adapted for being hinged upon a window frame (3), an inner sash (5) hinged upon the outer sash (2), a recess (16) in the inner sash (5) limited by a first face (17) extending crosswise to the inner sash (5) and a second face (18) extending crosswise to the first face (17), and a double-glazing (8) attached to at least the second face (18) of the recess (16) by gluing. The coupled window further comprises a clearance (19) between the periphery (20) of the double-glazing (8) and the first face (17) of the recess (16), a access opening (19') of the clearance (19) placed opposite to the first face (17) of the recess (16), and a cover list (24) with a cover (25) for covering at least an area of the outer side of the double-glazing (8) at the access opening (19') of the clearance (19) and an anchor (26) for anchoring the cover list (24) in the clearance (19). The coupled window of the invention has a simple, inexpensive and strong structure, which has a low U-coefficient, a high Net Energy Gain value and allows a relatively large quantity of incident light to pass.