Folding Hanging Chair Frame for Tensile Load Distribution
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Solution Overview
Problem
Hanging chairs, such as egg chairs, face challenges in distributing the weight of the occupant due to the absence of legs, requiring materials and construction techniques that can resist tensile loading, which differs from chairs with legs that experience compressive forces.
Innovation Solution
A hanging chair design featuring a folding frame with an upper and lower frame member, connected by pivotally movable upright supports that can collapse for storage and transportation, and a flexible cover that defines an ovoid opening, allowing for suspension from external structures while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a hanging chair uses a rigid frame structure to resist tensile loading, then structural strength is improved, but device complexity increases
Solution Approach 1:
The frame is divided into multiple upright supports that can be segmented and folded together. Each upright support is a separate component that can be individually connected to the top and bottom rails, allowing the structure to be divided into manageable segments that can be stored compactly when not in use.
Solution Approach 2:
The upright supports are designed to be movable between an extended position for use and a folded position for storage. The dynamic capability allows the frame to transition from a rigid load-bearing structure to a compact folded configuration, resolving the contradiction between structural strength and device complexity.
2Stability of the object's composition
If a hanging chair uses a fixed frame structure, then structural stability is improved, but ease of operation deteriorates
Solution Approach 1:
The frame is segmented into removable upright supports that can be independently assembled and disassembled. This segmentation allows the structure to be easily configured and taken down without requiring complex tools or procedures, while maintaining stability when assembled.
Solution Approach 2:
The movable upright supports enable the frame to transition between assembled and disassembled states. When assembled, the structure provides stable support; when disassembled, it allows for easy storage and transportation, resolving the contradiction between structural stability and ease of operation.
3Force
If a hanging chair uses an expanded frame structure, then weight distribution capability is improved, but volume increases
Solution Approach 1:
The frame is divided into collapsible segments that can be folded together. When expanded, the segments provide a large volume for weight distribution; when folded, they reduce to a compact form factor, resolving the contradiction between weight distribution capability and volume.
Solution Approach 2:
The frame structure dynamically changes volume between expanded and collapsed states. The upright supports can be positioned to provide maximum weight distribution when needed, then folded to minimize storage volume, eliminating the need to compromise between these conflicting requirements.
Data Source
AI summary
A hanging chair that includes an upper frame member, a lower frame member, and a plurality of upright supports. The upper frame member is connectable to an external support structure and having a top plate and a bottom plate. The lower frame member has a top plate and a bottom plate. Each upright support having a first end and a second end. The first end of each upright support is connected to the upper frame member between the top plate and the bottom plate of the upper frame member. The second end of each upright support is connected to the lower frame member between the top plate and the bottom plate of the lower frame member. The plurality of upright supports are pivotally moveable between a collapsed position, where the plurality of upright supports are pivoted toward one another, and an expanded position.