Folding chair
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Solution Overview
Problem
Conventional folding chairs occupy too much space when collapsed and lack stability and load capacity when extended, making them inconvenient for storage and use.
Innovation Solution
A folding chair design featuring U-shaped frame members, pivotally connected components, and limiter couplers that allow the chair to collapse into a slim-folded state while extending into a stable and load-capable standing position, utilizing a system of pivots and connectors to facilitate easy assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the legs and seat are pivotally moved toward the frame to collapse the chair, then the chair can be folded for storage, but the frame and seat maintain the same overall width as in the extended state, occupying large space
Solution Approach 1:
The chair is divided into multiple independently pivotable segments including front supports, rear supports, legs, and seat receivers. Each segment can pivot relative to others, allowing the entire structure to collapse into a compact configuration where the overall width is significantly reduced compared to conventional folding chairs.
Solution Approach 2:
The chair employs multiple pivot points and connecting members that allow dynamic transformation between extended and collapsed states. The front supports and rear supports can pivot independently, enabling the structure to adapt its shape and reduce its footprint for storage while maintaining stability during use.
2Stability of the object's composition
If the chair is supported only by the bottom of the frame and two legs in the extended state, then the structure is simple, but the stability and load capacity are limited
Solution Approach 1:
The front supports and rear supports are integrated with the legs through pivotal connections, creating a unified load-bearing structure. When extended, these components work together to distribute weight across multiple contact points, significantly enhancing stability and load capacity compared to simple frame-and-leg support.
Solution Approach 2:
The pivotable front supports and rear supports are pre-positioned to provide optimal stability when the chair is extended. The connecting members are designed to engage and lock into place, ensuring that the chair achieves maximum stability before use without requiring additional assembly steps.
Data Source
AI summary
A folding chair includes a left supporting frame member, a left leg, a left armrest, a left seat receiver, a left front support, a left rear support, a left front connecting member, a left rear connecting member, a left backrest support, a left front support pivot, a left rear support pivot, a left front pivot, a left rear pivot, a left backrest support pivot, a right supporting frame member, a right leg, a right armrest, a right seat receiver, a right front support, a right rear support, a right front connecting member, a right rear connecting member, a right backrest support, a right front support pivot, a right rear support pivot, a right front pivot, a right rear pivot, a right backrest support pivot, a front pivoting limiter, a rear pivoting limiter, a front pivotal connector, a rear pivotal connector, a seat and a backrest.