Hinge Band Module With Guide Recess And Projection For Heavy Wing Load
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Solution Overview
Problem
Existing band assemblies for hinged connections between sashes and frames face usability issues when handling heavy wings, particularly in terms of load capacity and adjustability.
Innovation Solution
The assembly incorporates a guide recess and projection system between the mounting part and band tab, with curved side walls and surfaces to enhance holding forces without compromising adjustability, along with a pressure screw and tension screw mechanism for adjustable pivoting and locking, and a support screw mechanism for vertical adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple hinge plate and mounting part connection is used, then the device complexity is low, but the load capacity is insufficient for heavy wings
Solution Approach 1:
The connection system is divided into distinct functional elements: a mounting part with an undercut groove, a hinge plate with a sliding block, guide recesses with curved surfaces, and adjusting mechanisms. This segmentation allows each component to be optimized for its specific function while collectively providing high load capacity without excessive overall complexity.
Solution Approach 2:
The guide recesses feature curved surfaces that engage with corresponding curved surfaces on the sliding block. This curvature enables smooth pivoting motion while distributing loads more effectively across the contact surfaces, enhancing load capacity without requiring additional structural complexity.
2Adaptability or versatility
If the hinge plate is made adjustable via gear mechanism, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The complex gear mechanism from prior art is extracted and replaced with a simpler sliding block and undercut groove system. The adjustment function is achieved through the interaction of the sliding block moving within the undercut groove, guided by the curved surfaces, eliminating the need for separate gear components while maintaining adjustability.
Solution Approach 2:
The sliding block and undercut groove configuration serves multiple functions simultaneously: it provides the adjustment mechanism, guides the pivoting motion through curved surfaces, and maintains the connection between components. This multi-functionality reduces the need for separate specialized components, thereby reducing overall device complexity.
3Strength
If the guide recess and projection are arranged close to the hinge axis, then the device complexity is reduced, but the load capacity decreases
Solution Approach 1:
The guide recesses and curved surfaces are positioned at a distance from the hinge axis, utilizing the spatial dimension perpendicular to the rotation axis. This arrangement creates a larger moment arm for force transmission, enhancing load capacity without adding complexity to the rotational mechanism itself.
4Ease of operation
If the side walls of guide recess have large radius of curvature, then the ease of operation is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The radius of curvature of the guide recess side walls is optimized as a specific parameter to balance two opposing requirements: large enough to ensure smooth, jam-free pivoting operation, but not so large as to create excessive manufacturing complexity. This parameter optimization achieves the desired operational ease while maintaining manufacturability.
Data Source
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Figure 3
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AI summary
The invention relates to a module (16) of a band for the hinged connection of a wing to a frame about a hinge axis (S), comprising an assembly part (17) and a band flap (18), wherein the band flap (18) is arranged such that it can be pivoted in relation to the assembly part (17) by an adjustment angle (a) about a pivoting axis (B), characterised in that one of either the assembly part (17) or the band flap (18) comprises a guide recess (23) which is arranged in the direction perpendicular to the pivoting axis (B), at a distance therefrom, and that the other of either the assembly part or the band flap comprises a guide projection (26) engageable in the guide recess (23) over the entire adjustment region.