Modular chair assembly
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Solution Overview
Problem
Conventional chair assemblies are either bulky and inconvenient to transport due to their non-detachable design for structural strength or lack aesthetic appeal when made detachable for ease of use.
Innovation Solution
A modular chair assembly with a seat member and detachable support leg units, where the inner axle and hollow tube are made of different materials to provide structural strength and aesthetic design, allowing for easy disassembly and reassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the chair main body and leg units are undetachably secured together to ensure structural strength, then the overall structure strength is improved, but the chair assembly becomes bulky and inconvenient to transport and store
Solution Approach 1:
The chair assembly is divided into separable components: a seat member and multiple support leg units that can be detachably mounted. This segmentation allows the chair to be disassembled for convenient transport and storage while maintaining structural integrity when assembled, directly resolving the contradiction between strength and ease of operation.
2Strength
If support legs are made of metal to ensure sufficient structure strength, then the structural strength is improved, but the overall aesthetic design of the chair assembly is limited
Solution Approach 1:
The support leg units combine metal inner axles (for strength) with hollow tube sleeves made of different materials (for aesthetics). This composite structure allows the internal metal component to provide sufficient structural strength while the external sleeve can be designed in various materials and styles to enhance aesthetic appeal, resolving the contradiction between strength and design.
3Strength
If support legs are made of metal to ensure sufficient structure strength, then the structure strength is improved, but the chair assembly becomes difficult to disassemble and reassemble
Solution Approach 1:
The support leg units are designed as self-contained detachable modules that can be easily mounted to and dismounted from the seat member. This segmentation enables simple assembly and disassembly operations while the internal metal axle structure maintains sufficient strength, resolving the contradiction between strength and ease of operation.
Solution Approach 2:
The detachable connection mechanism acts as an intermediary between the seat member and support leg units, enabling easy assembly and disassembly. This intermediary connection allows the strong metal axles to be temporarily joined to the seat member without permanent attachment, facilitating repeated assembly and disassembly while maintaining structural integrity during use.
Data Source
AI summary
A modular chair assembly includes a seat member and at least three support leg units. The seat unit includes a seat member which has a lower surface and an upper surface opposite to the lower surface. Each of the three support leg units is detachably mounted to the lower surface of the seat member, and includes an inner axle and a hollow tube sleeved on the inner axle. The inner axle and the hollow tube are made of different materials to permit the inner axle to have a larger anti-bending strength than the hollow tube. The inner axle includes a bottom end surface for being supported on the ground.