Chair Back Clip Attachment for Fast Assembly and Disassembly
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Solution Overview
Problem
Modern chair back constructions are time-consuming to assemble and disassemble, leading to high manufacturing costs and quality issues, with a need for easier assembly and disassembly, integrated solutions, and the use of environmentally friendly materials for recycling.
Innovation Solution
A chair back construction featuring a lower back frame, back support, cushion assembly, and clip system with angled ramps and stops for quick attachment and detachment, facilitating assembly and disassembly, and utilizing environmentally friendly materials like polypropylene for the back support and inner shell.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional chair back constructions are used, then structural integrity is maintained, but assembly time increases and manufacturing efficiency decreases
Solution Approach 1:
The chair back construction is divided into separate modular components: a back support frame, cushion assembly, and clip attachments. Each component can be manufactured independently and assembled quickly through the clip system, eliminating the need for complex fastening operations and significantly reducing assembly time while maintaining structural integrity.
Solution Approach 2:
The clip acts as an intermediary component that simplifies the connection between the back support frame and cushion assembly. Instead of directly fastening the cushion to the frame with multiple fasteners, the clip provides a simple insertion and engagement mechanism that speeds up assembly while ensuring secure attachment.
2Reliability
If multiple fastening components are used to ensure durability, then structural strength is improved, but device complexity increases
Solution Approach 1:
Multiple fastening functions are merged into a single clip component. The clip integrates attachment, positioning, and securing functions that would traditionally require multiple separate fasteners, brackets, or clips. This consolidation reduces the total number of components while maintaining the durability and reliability of the chair back construction.
3Ease of repair
If traditional assembly methods are used, then connection strength is ensured, but ease of disassembly deteriorates
Solution Approach 1:
The clip connection system transitions from a static permanent attachment to a dynamic reversible connection. The clip can be easily inserted and removed, allowing the cushion assembly to be quickly detached from the back support frame for repair, replacement, or recycling, while still providing strong connection strength during normal use.
4Reliability
If non-recyclable materials are used for durability, then structural strength is improved, but environmental impact worsens
Solution Approach 1:
The chair back construction is designed for easy disassembly and material recovery. The modular design with simple clip attachments allows components to be separated and recycled efficiently. The back support frame, cushion assembly, and clips can be individually recovered and processed for recycling, reducing environmental impact while maintaining structural strength through proper material selection.
Data Source
AI summary
A chair includes a lower back frame, a back construction, including a back support attached to the lower back frame, a cushion assembly attached to the back support and a clip wedgingly engaged between the back support and the cushion assembly. The cushion assembly further includes an inner shell which includes two or more apertures and a hook extending downwardly and outwardly from each aperture. The clip further includes at least one angled ramp and at least one stop. The angled ramp is configured to allow the hook of the inner shell to slide through the angled ramp and the stop is configured to suspend sliding of the hook. Methods of assembling a back construction are also provided.