Mesh Folding Chair Structure for Compact Stacking Comfort
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Solution Overview
Problem
Folding chairs often compromise on comfort and storage density due to bulkiness in the folded position, and existing solutions either lack stability during stacking or are uncomfortable to sit in.
Innovation Solution
A folding chair design featuring a mesh seating surface supported by all-plastic hoops, which provides comfort and structural support while maintaining high storage density, with a frame that allows for easy stacking and stability, using flexible and elastic mesh or patterned open texture plastic to cover the seat and backrest hoops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional rigid seats and backrests are used, then structural support is provided, but comfort is reduced and storage density decreases due to extra thickness
Solution Approach 1:
The patent replaces traditional rigid seats and backrests with flexible mesh material stretched over thin plastic hoops. The mesh provides necessary structural support while being thin and flexible, allowing the chair to fold compactly and store vertically without excessive thickness, thereby improving storage density while maintaining support functionality.
Solution Approach 2:
The patent combines plastic material for the hoops with mesh material for the seating surfaces. This composite construction provides the structural integrity needed for support while keeping the overall thickness minimal, resolving the contradiction between needing structural support and minimizing storage volume.
2Ease of operation
If mesh seating surface is used, then comfort is improved, but structural support may be compromised
Solution Approach 1:
The flexible mesh material conforms to the user's body shape, providing comfort through pressure distribution. The mesh is stretched taut over the hoops to maintain structural integrity, creating a surface that is both comfortable and supportive.
Solution Approach 2:
The patent extracts the support function from the traditional rigid seat structure and relocates it to the plastic hoops and mesh combination. This allows the seating surface to be comfortable and flexible while the hoops provide the necessary structural framework.
3Volume of moving object
If chairs are stacked for storage, then storage density is improved, but stability may be compromised
Solution Approach 1:
The patent gives the legs curved profiles that complement each other, allowing chairs to nest tightly when stacked. The curved shapes interlock to prevent rolling or shifting, providing stability to the stack while maintaining compact vertical storage.
Solution Approach 2:
The chair is designed so that one chair can be nested within another when folded and stacked. The legs and frame elements are shaped to fit together like nested dolls, maximizing storage density while the interlocking curved profiles ensure the stack remains stable and does not separate.
Data Source
AI summary
A folding mesh chair includes a seat and a backrest carried between opposite frame sides. The chair has an unfolded seating position in which the seat pivots to extend from the frame sides and bottoms of front and rear legs move apart, and a folded position in which the seat pivots toward the frame sides and the front and rear legs move together. One or both of the seat and the backrest have a continuous sheet of flexible and elastic mesh or patterned open texture plastic held across and substantially covering an opening in an all-plastic hoop fixed between the frame sides.