Curved Brace Window Fitting for Diagonal Force Resistance
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Solution Overview
Problem
Existing modular window frame edge connection fittings are weak against diagonal forces, lack effective air-tightness and heat insulation due to perpendicular coupling, and pose safety risks and cleaning difficulties with sharp edges, while packing insertion grooves are not designed for easy insertion of wind-proof hair and gaskets.
Innovation Solution
A curved brace window frame and sash edge connection fitting system with a modular design that includes a curved brace to enhance coupling strength, features a curved packing insertion groove for easy insertion of sealing members, and a planar outer circumference for easy assembly and cleaning, addressing the structural and safety issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If perpendicular coupling is used in existing edge connection fittings, then assembly is simple, but coupling strength against diagonal forces is weak
Solution Approach 1:
The patent introduces a curved brace component that replaces the traditional perpendicular straight-line connection. The curved geometry distributes diagonal forces more effectively across the connection joint, transforming the force distribution pattern from concentrated perpendicular stresses to distributed curved path stresses, thereby enhancing coupling strength against lateral and diagonal forces.
Solution Approach 2:
The connection fitting is divided into multiple functional components: a body portion, a curved brace portion, and a packing insertion groove portion. This segmentation allows each component to be optimized for its specific function while maintaining overall structural integrity and assembly simplicity.
2Ease of manufacture
If perpendicular edges are used in existing fittings, then manufacturing is straightforward, but cleaning is difficult due to sharp edges
Solution Approach 1:
The curved brace portion replaces sharp perpendicular edges with smooth curved surfaces. This eliminates collision risks for users and provides easier cleaning by removing sharp corners where dirt and grime tend to accumulate, while the curvature maintains structural strength through distributed stress paths.
3Reliability
If traditional packing insertion grooves are used, then assembly is simple, but air-tightness and heat insulation are insufficient
Solution Approach 1:
The packing insertion groove is designed with a curved cross-sectional shape rather than a traditional straight rectangular groove. This curved geometry provides better contact surface area for the packing member (wind-proof hair), enhancing the sealing effect and improving both air-tightness and heat insulation properties of the window frame connection.
4Productivity
If modular design is used, then assembly is efficient, but coupling intensity is insufficient for windy or seismic areas
Solution Approach 1:
The modular connection fitting is segmented into distinct functional portions (body, curved brace, packing groove) that can be manufactured separately and assembled efficiently. The curved brace portion specifically addresses the strength requirement for windy or seismic areas by providing enhanced diagonal force resistance while maintaining the modular assembly advantage.
Solution Approach 2:
The curved brace geometry provides superior structural strength for withstanding diagonal and lateral forces in windy or seismic conditions, while the overall modular design allows for efficient assembly. The curvature distributes stresses more effectively than straight-line connections.
Data Source
AI summary
A curved brace edge connection fitting and a curved brace window sash edge connection fitting and a window structure are provided. A coupling intensity of existing modular edge connection fittings can be heightened to simultaneously enhance air-tightness and heat insulation and to further provide effects of curved design and easy cleaning. The curved brace window frame edge connection fitting and the curved brace window sash edge connection fitting are used in a push-to-open window called a slider and a rotate-to-open window called a casement.