Hinged Chair with Rotatable Fold-Down Back for Compact Shipping
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Solution Overview
Problem
Large furniture pieces are cumbersome and costly to ship due to their size, requiring significant space and resources for transportation, and are often difficult for consumers to handle and assemble without specialized skills.
Innovation Solution
A hinged chair design that allows for disassembly into a compact configuration, with a pivotally connected fold-down back that rotates between a horizontal folded position for shipping and a vertical position for use, enabling efficient packaging and easy assembly by the end user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the chair is designed with a fixed back in traditional furniture configuration, then the structural stability and comfort are improved, but the shipping space requirements and transportation costs increase significantly
Solution Approach 1:
The chair is divided into separable components including a detachable base and a foldable backrest that can be segmented for compact storage and shipping
Solution Approach 2:
The backrest is designed with dynamic folding capability, allowing it to transition between an upright position for use and a folded position for compact shipping, reducing volume by approximately half
2Strength
If the chair back is designed to be permanently attached to the seat, then the structural integrity is improved, but the compactness for shipping and storage deteriorates
Solution Approach 1:
The backrest connection mechanism provides dynamic attachment - securely fixed during use for structural integrity, but capable of folding and detaching for compact shipping configuration
Solution Approach 2:
The backrest is designed as a separable component that can be detached from the seat, allowing independent folding and compact storage while maintaining strength when assembled
3Reliability
If traditional furniture shipping methods are used with fully assembled chairs, then the structural protection during shipping is improved, but the shipping costs and resource consumption increase
Solution Approach 1:
The chair is designed for disassembly into protectable components that can be efficiently packaged in compact containers, reducing shipping volume and associated costs while maintaining structural protection
Solution Approach 2:
The foldable backrest enables the chair to transition between a protected assembled state during shipping and a functional deployed state at destination, optimizing both protection and space utilization
Data Source
AI summary
A hinged chair having a seat, a fold-down back and a base that is detachable from the bottom of the seat to enable the chair to be shipped disassembled in a compact container. The fold-down back is hingedly coupled to the seat by pivots that extend through frame posts at opposite sides of the back. To reduce the profile of the chair, the fold-down back is rotatable at the pivots between a vertical position standing upwardly from the seat and a horizontal position lying over and in opposite facing alignment with the seat. With the chair removed from its shipping container and the chair back rotated to its vertical upstanding position, locking pins are pushed through the frame posts of the back above the pivots to lock the back in the vertical position ready for use.