Building Envelope Panel Interlocking Mechanism
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Solution Overview
Problem
Existing sandwich panels used in building construction lack sufficient resistance to wind suction and tend to dislocate, leading to instability in building envelopes, particularly in roofs and walls.
Innovation Solution
The use of sandwich panels with an inner metallic tray and an outer metallic sheet, sandwiching insulation material, featuring interlocking U-shaped tenons and mortises on both longitudinal sides, which enhance structural integrity and resistance to wind forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sandwich panels are assembled with conventional interlocking parts, then the assembly is simple, but the resistance to wind suction is insufficient and panels tend to break apart
Solution Approach 1:
The interlocking system is segmented into two distinct types: main interlocking parts (tenon-mortise) for primary structural connection, and secondary interlocking parts for additional stabilization. This segmentation allows each component to be optimized for specific functions, improving overall wind suction resistance without requiring complete redesign of the entire system.
Solution Approach 2:
The patent combines metallic materials (steel or aluminum) for the sandwich panels with complementary interlocking mechanisms. The metallic sheets provide structural strength while the tenon-mortise system provides mechanical interlocking, creating a composite structural solution that resists wind suction forces more effectively than either component alone.
2Stability of the object's composition
If sandwich panels use simple interlocking parts, then the assembly process is easy, but dislocation resistance is insufficient
Solution Approach 1:
The interlocking system is divided into main interlocking parts for primary connection and secondary interlocking parts for additional stabilization. This segmentation provides multiple levels of resistance to dislocation while maintaining a relatively simple assembly process, as each type of interlocking part can be installed independently.
Solution Approach 2:
The tenon-mortise mechanism acts as an intermediary element between adjacent sandwich panels, providing mechanical interlocking that prevents dislocation. The tenon of one panel fits into the mortise of the adjacent panel, creating a stable connection that maintains panel alignment and position.
3Strength
If external facings are fastened on the external side of sandwich panels, then the aesthetic appearance is improved, but the sandwich panels tend to break apart under wind load
Solution Approach 1:
The fastening system is segmented to include both external facings for aesthetic purposes and an internal tenon-mortise interlocking system for structural strength. This allows the external facing to be optimized for appearance while the internal interlocking mechanism handles the structural load-bearing function.
Solution Approach 2:
The solution moves the primary interlocking mechanism from the external surface to the internal structure of the panels. By placing the tenon-mortise system within the panel thickness rather than on the external surface, the design maintains aesthetic external facings while providing robust internal structural connection that resists wind suction forces.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to a building envelope comprising an assembly of at least a first panel and a second sandwich panel (3), the first longitudinal side of the each panel comprising a main tenon (13) and a secondary mortise (30) and the second longitudinal side of the each panel comprising a main mortise (20) and a secondary tenon (37) such that the two panels are bound by means of the interlocking of the main tenon of the first panel with the main mortise of the second panel, the building envelope further comprising a metallic profile (49) positioned on the assembly of panels and fixed with a fastener (51) whose body goes through the outer central part (26) of the outer metallic sheet of the second panel, the main tenon of the first panel and the main mortise of the second panel.