Window Screen Profile Assembly for Narrow Frames and Secure Fastening
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Solution Overview
Problem
Existing window and screen profile assemblies struggle to maintain dimensional tolerances and provide sturdy, aesthetic fastening on minimalistic window sections, especially when faced with large dynamic loads and deviations from nominal dimensions.
Innovation Solution
A window profile assembly with a basic profile featuring a flange offset from the first side wall by a distance Δd, allowing for secure fastening and force transmission, even with narrow first side walls, and incorporating a seal for moisture protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the side wall of the basic profile is made narrower to match minimalistic window sections, then the aesthetic appearance and dimensional matching are improved, but the fastening strength and stability deteriorate
Solution Approach 1:
The basic profile is designed with a stepped configuration where the side wall extends narrower in the transverse direction while a rear wall extends further in the longitudinal direction. This dimensional transformation allows the fastening surface to be positioned deeper along the window profile, providing adequate fastening strength without increasing the visible side wall width.
Solution Approach 2:
The basic profile is segmented into distinct functional zones: a narrow side wall for aesthetic matching with minimalistic windows, and a extended rear wall that provides sufficient surface area for robust fastening. This segmentation allows each part to optimize its dimensions for its specific function.
2Shape
If the side wall is made narrower for aesthetic purposes, then the visual appearance is improved, but the space for mounting fasteners deteriorates
Solution Approach 1:
The fastening functionality is relocated from the transverse dimension (side wall) to the longitudinal dimension (rear wall). The rear wall extends further along the window profile, providing sufficient space for mounting fasteners without increasing the transverse width of the side wall that is visible on the minimalistic window section.
3Manufacturing precision
If the screen profile assembly is made narrower to match the window section, then the dimensional tolerance requirements are improved, but the force transmission capability deteriorates
Solution Approach 1:
The force transmission path is redirected from the transverse direction through the side wall to the longitudinal direction through the rear wall. The extended rear wall provides sufficient cross-sectional area and moment of inertia to transmit forces effectively, while the narrow side wall maintains dimensional compatibility with minimalistic window sections.
Solution Approach 2:
The basic profile employs an asymmetric stepped design where the side wall and rear wall have different dimensions. The side wall is narrow to match aesthetic requirements, while the rear wall is extended to provide structural strength for force transmission, creating an asymmetric form that optimizes both appearance and performance.
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
Assembly (1), of a window section (5) and a screen profile assembly (2) for mounting a lateral side of a screen for screening off the window section (5), comprising a basic profile (6) with: - a side wall (7) to be fitted to the window section (5) for fastening the basic profile (6) against the window section (5); - a rear wall (11), which is raised relative to the side wall (7) in order to be raised relative to the window section (5); and a flange (8) at the level of the rear wall (11), for fastening the basic profile (6) against the window section (5), wherein this flange (8) is raised relative to the side wall (7) on the side opposite to the side where the rear wall (11) is raised t and is displaced in a transverse direction (D), transverse to the rear wall (11) and away from the side wall (7) by a distance Δd relative to the rear wall (11), with 0 < Δd ≤ the transverse frame tolerance (drt).