Detachable Sofa with Nested Folding Mechanism for Compact Packaging
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Solution Overview
Problem
Conventional sofas have integrated backrests and seat bodies that are not detachable, leading to large volume and weight, making them inconvenient to transport and resulting in high transportation costs.
Innovation Solution
A packaging-optimized detachable sofa design featuring a backrest support, armrest frames, seat cushion frame, footrest, and a folding mechanism with link assemblies, allowing the sofa components to be disassembled and stored within the armrest skins, minimizing volume and reducing the risk of damage during transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the sofa uses an integrated backrest and seat body design, then the structural stability is improved, but the volume and weight increase making transportation inconvenient
Solution Approach 1:
The sofa is divided into multiple detachable modules including a backrest module with folding mechanism, a seat module, and an armrest module. Each module can be independently disassembled and stored, reducing the overall volume during transportation while maintaining structural stability when assembled.
Solution Approach 2:
The folding mechanism is nested within the backrest module structure, allowing the backrest to fold compactly. The disassembled modules can be stored within each other or in dedicated storage spaces, minimizing the volume occupied during transportation.
2Ease of operation
If the sofa components are detachable, then the transportation convenience is improved, but the device complexity increases
Solution Approach 1:
The sofa is segmented into standardized modules with unified connection interfaces. The backrest module, seat module, and armrest module all use similar detachable connection mechanisms, which simplifies the assembly and disassembly processes despite the modular complexity.
Solution Approach 2:
The connection mechanisms designed for detachable modules serve multiple functions: they enable easy assembly and disassembly for transportation, provide structural connection when assembled, and allow for potential reconfiguration of the sofa layout. This multi-functionality reduces the need for specialized components.
3Volume of moving object
If the sofa is designed for compact storage, then the transportation space is reduced, but the ease of assembly and disassembly decreases
Solution Approach 1:
The sofa is divided into clearly defined modules with standardized connection points. Each module has designated assembly locations that guide the user through a simple sequence of connections, making the assembly process intuitive despite the modular complexity.
Solution Approach 2:
The connection mechanisms are pre-designed and pre-positioned on each module during manufacturing. The connection points, fasteners, and alignment features are prepared in advance, allowing users to simply connect the modules without requiring complex assembly steps or special tools.
Data Source
AI summary
A packaging-optimized detachable sofa includes a backrest support, two armrest frames, a seat cushion frame, a footrest, and a folding mechanism, where the folding mechanism includes two link assemblies; the two link assemblies are respectively detachably provided at inner sides of the two armrest frames; the seat cushion frame is detachably provided at middle inner sides of the two link assemblies; the two link assemblies each include one end detachably connected to a bottom end of the backrest support and the other end detachably connected to the footrest; the armrest frames are respectively covered by armrest skins; when the packaging-optimized detachable sofa is in a storage state, each component is disassembled from the folding mechanism; and the folding mechanism each are placed in accommodating spaces covered by the armrest skins at sides of the armrest frames.