Profile Assembly Joint With Resin-Filled Shear-Resistant Locking
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Solution Overview
Problem
Existing assembly devices for profiles, particularly in railway vehicles, require strict manufacturing tolerances and are inefficient in resisting forces in the plane of connection, making them unsuitable for assembling long panels with wider tolerances and ensuring mechanical properties.
Innovation Solution
A device with constricted female elements and male elements featuring inclined lugs and a teardrop-shaped cross-section, filled with resin or glue, providing enhanced resistance to shear stresses and allowing assembly at room temperature with wider manufacturing tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional assembly devices are used, then manufacturing precision is improved, but device complexity and suitability for long panels deteriorates
Solution Approach 1:
The assembly device is segmented into male elements with inclined lugs and female elements with constricted sections, allowing modular adaptation to different panel configurations and lengths while maintaining connection precision
Solution Approach 2:
The invention changes the geometric parameters of the connection elements (inclined lugs at specific angles, constricted section dimensions) to achieve both precision and adaptability for long panel assemblies
2Force
If traditional assembly devices are used, then transverse force resistance is improved, but in-plane force resistance deteriorates
Solution Approach 1:
The assembly combines mechanical elements (male/female connectors with specific geometries) and filler material (resin or adhesive) to create a composite connection that resists both transverse and in-plane forces effectively
Solution Approach 2:
The inclined lugs and constricted sections employ curved geometric transitions that distribute stress more evenly, improving resistance to in-plane forces while maintaining transverse force resistance
3Strength
If tight manufacturing tolerances are applied, then assembly strength is improved, but ease of manufacture deteriorates
Solution Approach 1:
The invention applies high-precision features only where critical (inclined lugs contact points, constricted section geometry) while allowing wider tolerances in other areas, maintaining assembly strength without excessive manufacturing difficulty
Solution Approach 2:
By optimizing geometric parameters (lug angles, constricted section dimensions), the invention achieves high assembly strength with relaxed overall manufacturing tolerances compared to traditional rigid-fit approaches
Data Source
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AI summary
This assembly device (3) of two sections (1, 2) comprises two male assembly elements (10, 12) formed on a first section (1) and two female assembly elements (20, 22) formed on the second section (2) and adapted to receive the male assembly elements (10, 12). The female elements (20, 22) have a cross section comprising a wide part (20a, 22a) receiving the distal end (10a, 12a) of the male elements (10, 12) and a narrow part (20b, 22b) surrounding a proximal end (10b, 12b) of the male elements (10, 12). The assembly device (3) comprises a packing of filling material injected into volumes (V1, V2) delimited between the male elements (10, 12) and the wide part (20a, 22a) of the female elements (10, 12 ), and additional means (15, 25, 30) for connecting the first section (1) and the second section (2).