Steel Wing Mounting Device for Window Sash Tensile Force Absorption
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Solution Overview
Problem
Existing window and door fastening arrangements are costly due to their reliance on zinc die-cast parts, which are expensive due to rising raw material prices, and lack efficiency in absorbing tensile forces from sash weights.
Innovation Solution
A steel-based wing attachment arrangement with a guide section in a connecting rod channel, featuring a tension absorption part and adjustable design using a screw and nut system, allowing for cost-effective production and enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If zinc die-cast parts are used for fastening arrangements, then structural stability is achieved, but material cost increases due to rising zinc prices
Solution Approach 1:
The patent changes the material parameter from zinc die-cast to steel, maintaining structural stability while reducing material cost. The steel profile with specific geometric parameters (guide section, tension absorption part, fastening section) achieves the required strength without relying on expensive zinc casting processes.
Solution Approach 2:
The invention uses a composite structure combining steel profile with plastic components (guide section, fastening section). This composite approach allows the use of cheaper materials while maintaining overall structural integrity through the combination of materials with complementary properties.
2Force
If conventional fastening arrangements are used, then basic fastening function is provided, but tensile forces from sash weight are not adequately absorbed
Solution Approach 1:
The steel profile is segmented into distinct functional sections: guide section for positioning, tension absorption part for withstanding sash weight, and fastening section for mounting. This segmentation allows each part to be optimized for its specific function, particularly enhancing tensile force absorption capability.
Solution Approach 2:
The fastening arrangement incorporates adjustable elements (adjusting screw, nut) that allow dynamic adaptation to different sash weights and positioning requirements. This dynamic capability ensures reliable tensile force absorption across various operating conditions.
3Ease of operation
If fixed fastening arrangements are used, then assembly is simple, but positioning adjustment is not possible
Solution Approach 1:
The fastening arrangement transitions from a fixed design to a dynamic, adjustable system. The adjusting screw and nut mechanism enable continuous positioning adjustment along the steel profile while maintaining a relatively simple assembly process through standardized components.
Solution Approach 2:
The steel profile design provides multiple functions: structural support, tensile force absorption, and positioning adjustment. The universal adjusting mechanism can accommodate various sash types and weight classes, reducing the need for multiple specialized fastening arrangements.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The arrangement (20) has a steel part (21) with a guide section (23) for guiding the steel part into a connecting rod channel of a wing. A wing fixing stand (22) is connected with the steel part, and the steel part is designed as a punching-bending part or laser-cut bending part. The steel part has a sectioned traction unit (24) running parallel to the guide section, where a free end (26) of the guide section is connected with the traction unit. The wing fixing stand is connected with the steel part via a set screw (29).