Collapsible Spreader Bar Structure for Compact Hanging Chairs
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Solution Overview
Problem
Conventional hanging chairs with rigid spreader bars face challenges in packaging and storage due to their large size, leading to increased shipping costs and storage requirements for manufacturers, distributors, and end-users.
Innovation Solution
A collapsible spreader bar design that consists of interconnecting segments with a spring button mechanism, allowing the spreader bar to be disassembled and folded for compact storage and shipping, comprising a first and second segment with releasable ends and grooves for rope connection, enabling the chair to be easily assembled and suspended.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid spreader bar is used in a hanging chair, then the structural integrity and stability are improved, but the packaging size and storage space requirements increase
Solution Approach 1:
The spreader bar is divided into multiple collapsible segments that can be disconnected and folded. Each segment maintains sufficient strength when connected, but the overall structure can be compacted by separating the segments, resolving the contradiction between structural integrity and packaging volume.
Solution Approach 2:
The spreader bar transitions from a static rigid structure to a dynamic collapsible structure. The bar can be extended to full length for use (maintaining strength) and collapsed to a fraction of that length for storage (reducing volume), allowing the same structure to adapt to different functional requirements.
2Length of moving object
If a long rigid spreader bar is used, then the hanging chair provides adequate support span, but the shipping cost and storage efficiency decrease
Solution Approach 1:
The long spreader bar is segmented into multiple shorter sections that can be disconnected. During shipping and storage, these segments are folded together to occupy minimal space, dramatically improving shipping efficiency and storage capacity while maintaining the required length when assembled for use.
Solution Approach 2:
The collapsible segments are designed to nest within each other when folded, similar to nested dolls. This nesting arrangement minimizes the overall volume required for packaging and storage, allowing multiple chairs to be shipped and stored in the same space that would otherwise accommodate only one fully extended chair.
3Volume of moving object
If a collapsible spreader bar is used, then the packaging and storage efficiency are improved, but the device complexity increases
Solution Approach 1:
While segmentation does increase structural complexity compared to a single rigid bar, the segments are designed with standardized connection mechanisms that simplify assembly and disassembly. The modular nature allows for easier manufacturing and quality control, partially offsetting the increased complexity.
Solution Approach 2:
The collapsible spreader bar incorporates user-friendly connection mechanisms that enable easy assembly and disassembly without requiring special tools or expertise. The self-service design allows end-users to collapse and store the chair independently, minimizing the operational complexity despite the increased structural complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The collapsible spreader bar allows for a significant reduction in overall size, making shipping and storage more efficient and cost-effective while maintaining structural integrity when assembled.
Implementation Method 1
The first end of the first segment includes a spring button that is configured to engage with an opening in the first end of the second segment
Data Source
AI summary
A hanging chair includes a collapsible spreader bar that reduces the size of the product when in a disassembled configuration. The hanging chair includes a flexible seating portion having first and second side edges. A plurality of ropes connect the first and second side edges of the flexible seating portion to the collapsible spreader bar.