Folding Chair Rod Segmentation for Compact Bundled Storage
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Solution Overview
Problem
Conventional folding chairs are space-consuming and difficult to carry when folded, and they lack stability and sturdiness when unfolded due to the same frame and seat widths, and only bottom support from the ground.
Innovation Solution
A folding chair design featuring a unique configuration of frame rods, armrest rods, connecting rods, and supporting rods that allow the chair to be folded into a bundle shape for space-saving and portability, while unfolding to provide stable and sturdy support through multiple points of contact with the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the conventional folding chair is folded by having the legs and seat rest against the frame, then the chair can be folded for storage, but the width of the frame and seat remain the same as when unfolded, causing the chair to take up much space and be difficult to carry
Solution Approach 1:
The chair is divided into multiple independent rod components (frame rods, leg rods, armrest rods, connecting rods, supporting rods) that can move relative to each other. This segmentation allows the chair to transition from an extended configuration to a compact bundled configuration, reducing storage space while maintaining structural integrity during use
Solution Approach 2:
The folding mechanism utilizes multi-dimensional movement of rod components, not just simple collapsing. The leg rods, armrest rods, and supporting rods move in coordinated ways across multiple dimensions to achieve compact bundling, transforming the chair from a three-dimensional extended structure to a compact bundled form that is easier to store and carry
2Device complexity
If the conventional folding chair is unfolded with only bottom support from the frame, legs, and ground, then the structure is simple, but the chair is neither stable nor sturdy
Solution Approach 1:
The support function is segmented across multiple rod components including leg rods, armrest rods, and supporting rods. Each rod contributes to the overall stability, distributing the support function throughout the structure rather than relying on a single bottom support point, thereby enhancing stability without significantly increasing structural complexity
Solution Approach 2:
The armrest rods and supporting rods are pre-positioned and configured to provide additional support points before the chair is fully assembled or used. This preliminary arrangement of support elements ensures that when the chair is unfolded, multiple points of contact are already in place to provide immediate stability and sturdiness
Data Source
AI summary
A folding chair includes a left frame rod, right frame rod, front left leg rod, front right leg rod, left armrest rod, right armrest rod, left armrest supporting rod, right armrest supporting rod, left connecting rod, right connecting rod, left backrest rod, right backrest rod, first front supporting rod, second front supporting rod, first rear supporting rod, second rear supporting rod, left frame rotating component, right frame rotating component, left positioning slider, right positioning slider, left sliding component, right sliding component, left armrest fixing component, right armrest fixing component, left supporting rod sliding component, right supporting rod sliding component, leg shoes, backrest rod sliding components, front limiting components, seat portion and backrest portion.