Support Frame with Intersecting and Parallel Rods to Prevent Tipping
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Solution Overview
Problem
Folding chairs and tables in camping setups are prone to tipping due to insufficient support surface and unstable rear legs, leading to instability during use.
Innovation Solution
A high-stability support frame with intersecting primary and parallel secondary connecting rods, featuring equal-length triangles and rivet connections, along with adjustable support legs and rods, enhances structural stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the rear support legs are designed to open at a small angle, then the folding chair is more compact for storage, but the support surface is insufficient causing instability
Solution Approach 1:
The patent transitions from a single-plane leg arrangement to a three-dimensional spatial configuration. The support legs are arranged in multiple dimensions with specific angles (45-60 degrees relative to the horizontal plane), creating a volumetric support structure that provides both compactness and stability simultaneously.
Solution Approach 2:
The support legs are pre-configured with specific geometric parameters (length ratios, opening angles) during design to automatically achieve the optimal balance between compactness and stability when unfolded, without requiring additional adjustment mechanisms during use.
2Stability of the object's composition
If the support legs are made longer to increase support surface, then stability is improved, but the folded size increases making it less portable
Solution Approach 1:
Instead of increasing leg length in one dimension, the patent distributes the support function across multiple dimensions by arranging legs at specific angles and positions, achieving large support surface area while maintaining compact folded dimensions.
Solution Approach 2:
The support function is segmented across multiple legs with different functions (front support legs, rear support legs) positioned at different locations and angles, allowing each leg to be optimized for its specific role while contributing to overall stability.
Data Source
AI summary
A high-stability support frame is provided. The high-stability support frame includes two primary connecting rods and two secondary connecting rods, where the two primary connecting rods include a first primary connecting rod and a second primary connecting rod; the first primary connecting rod and the second primary connecting rod are intersected; the two secondary connecting rods include a first secondary connecting rod and a second secondary connecting rod; the first secondary connecting rod and the second secondary connecting rod are arranged in parallel; the first secondary connecting rod is connected to a first end of the first primary connecting rod and a first end of the second primary connecting rod; and the second secondary connecting rod is connected to a second end of the first primary connecting rod and a second end of the second primary connecting rod.