Spring-Loaded Quick-Release Coupling for Tool-Free Chair Assembly
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Solution Overview
Problem
Event industry chairs are often large and heavy, complicating logistics due to the need for tool-based disassembly and assembly, which prolongs setup and cleanup times, and there is a need for compact, lightweight, tool-free disassembly solutions that maintain comfort.
Innovation Solution
A spring-loaded quick-release coupling mechanism for chair components, allowing assembly and disassembly without tools, featuring a pin and shaft connected by a spring for automated locking and unlocking, enabling efficient assembly and disassembly of chair parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If chairs are made large and heavy, then comfort is improved, but logistics and setup time are worsened
Solution Approach 1:
The chair is divided into separate components (seat, base, legs) that can be independently handled and assembled. The coupling mechanism allows these segments to be quickly connected without tools, resolving the contradiction by enabling fast setup of comfortable chairs through modular assembly.
2Productivity
If chairs are disassembled into smaller parts, then stackability and transport efficiency are improved, but assembly time increases due to tool requirements
Solution Approach 1:
The coupling mechanism is designed to be self-servicing through the spring-loaded quick-release system that automatically locks and unlocks without tools. The spring mechanism provides automatic engagement and disengagement, eliminating the need for external tools and reducing assembly time while maintaining transport efficiency.
3Productivity
If a spring-loaded quick-release system is implemented, then assembly speed is improved, but device complexity increases
Solution Approach 1:
The locking function is extracted and implemented through a simple spring-loaded pin mechanism that engages with corresponding features on the chair components. This isolated spring mechanism provides quick-release functionality without requiring complex multi-component systems, achieving fast assembly with minimal added 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
Facilitates rapid setup and teardown of chairs, improves stackability for efficient transportation, and reduces manpower requirements by eliminating the need for tools, while maintaining comfort and aesthetics.
Implementation Method 1
The pin and the shaft are connected to each other by a spring. Said spring is provided in such way that the pin is pulled inside the shaft, which allows automated locking of the coupling mechanism.
Data Source
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AI summary
A coupling mechanism for a chair having a seat and a base, comprising an upper part and a lower part, said upper part being connected to the seat of the chair and said lower part being connected to the base of the chair, whereby said lower part comprises a spring-loaded quick-release system, allowing the assembly and disassembly of the upper and lower parts of the chair without the use of additional tools. A chair with a detachable seat, whereby said chair is provided with a coupling mechanism comprising a spring-loaded quick-release system.