Pagoda Tent Folding Frame With Scissor Bracing for Load Stability
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Solution Overview
Problem
Folding frames for pagoda tents are prone to collapse under wind or snow load due to suboptimal distribution of roof loads and forces, leading to structural instability.
Innovation Solution
A folding frame design featuring a triangular cross-section with non-linear legs connected by external scissor joints, stabilized by inner scissor arms and diagonal braces, which distribute forces efficiently and prevent lateral or torsional movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a central beam extends from the ground above the horizontal of the flat roof, then the pagoda tent structure can be formed, but the roof structure gives way under wind or snow load due to non-optimal distribution of loads and forces
Solution Approach 1:
The folding frame is divided into multiple individual legs (at least four) connected by scissor joints, allowing the structure to segment and redistribute forces through multiple connection points rather than relying on a single central beam, thereby improving load distribution and structural reliability
Solution Approach 2:
The legs are designed with non-linear, concave curvature towards the base, transitioning from straight linear forms to curved three-dimensional shapes. This dimensional change allows the legs to better distribute and absorb lateral and vertical forces, improving the structure's ability to withstand wind and snow loads while maintaining the pagoda tent shape
2Reliability
If the legs are made non-linear and concave towards the base, then the distribution of roof loads and forces is optimized, but the structural complexity increases
Solution Approach 1:
The scissor joint mechanism introduces dynamic adaptability to the structure, allowing the legs to adjust their configuration and force distribution in response to varying loads. This dynamic capability enables the complex concave geometry to function more effectively without requiring additional structural components, managing the trade-off between complexity and reliability
Data Source
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AI summary
The invention relates to a folding frame (F) for a pagoda tent with at least four legs (1.1, 1.2, 1.3, 1.4), wherein the at least four legs (1.1, 1.2, 1.3, 1.4) are connected to each other circumferentially by an outer scissor joint (2.1, 2.2, 2.3, 2.4), wherein two opposing outer scissor joints (2.1, 2.2, 2.3, 2.4) are each connected by an inner scissor joint (3.1, 3.2), wherein the inner scissor joints (3.1, 3.2) are connected centrally by a central gable (4), and wherein each of the legs (1.1, 1.2, 1.3, 1.4) is connected to the frame by a diagonal scissor joint (5.1, 5.2, 5.3, 5.4) central gable (4) is connected, wherein each of the diagonal scissors (5.1, 5.2, 5.3, 5.4) has a pivot point (6.1, 6.2, 6.3, 6.4), wherein the diagonal scissor (5.1, 5.2, 5.3, 5.4) consists of a first diagonal scissor arm (7.1, 7.2, 7.3, 7.4) projecting from the respective supporting leg (1.1, 1.2, 1.3, 1.4) and a second diagonal scissor arm (8.1, 8.2, 8.3, 8.4), wherein the pivot point (6.1, 6.2, 6.3, 6.4) is arranged between the first diagonal scissor arm (7.1, 7.2, 7.3, 7.4) and the second diagonal scissor arm (8.1, 8.2, 8.3, 8.4), wherein in the end position the first diagonal scissor arm (7.1, 7.2, 7.3, 7.4) extends from the respective support leg (1.1, 1.2, 1.3, 1.4) to the central gable (4) at a shallower angle than the second diagonal scissor arm (8.1, 8.2, 8.3, 8.4), wherein the second diagonal scissor arm (8.1, 8.2, 8.3, 8.4) is connected at one end to the pivot point (6.1, 6.2, 6.3, 6.4) and at the other end to a diagonal scissor connector (9) of the central gable (4) is connected.