Sofa Backrest Sliding Connection Structure for Tool-Free Assembly
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Solution Overview
Problem
Current sofa backrest and main body connection methods using bolts or screws are not conducive to assembly and disassembly, making it difficult to transport, replace, and repair the sofa, resulting in material waste.
Innovation Solution
A sofa backrest connection structure featuring a first member with guide rails and a limiting part with a clamping protrusion, and a second member with an insertion part and clamping hole, allowing for sliding insertion and clamping, enabling easy assembly and disassembly by external force on the clamping protrusion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fasteners such as bolts or screws are used to fixedly connect the sofa backrest and sofa main body, then the connection strength is improved, but the ease of assembly and disassembly deteriorates
Solution Approach 1:
The connection structure is divided into separate components: a first member (backrest side) with guide rails and clamping protrusion, and a second member (main body side) with insertion part and clamping hole. This segmentation allows the backrest to be easily detached from the main body while maintaining connection strength when assembled.
Solution Approach 2:
The guide rails act as an intermediary mechanism between the clamping protrusion and clamping hole. The insertion part slides along the guide rails to guide the clamping protrusion into the clamping hole, providing a smooth transition and ensuring proper alignment during assembly and disassembly.
2Stability of the object's composition
If fixed connection methods are used, then the stability of the sofa assembly is improved, but the adaptability for transportation and repair deteriorates
Solution Approach 1:
The connection structure transitions from a static fixed connection to a dynamic reversible connection. The sliding mechanism allows the backrest to be easily moved between connected and disconnected states, providing adaptability for transportation and repair while maintaining stability during use.
Solution Approach 2:
The design enables easy disconnection and reconnection of the backrest, allowing for recovery and reuse of components. This facilitates repair and replacement operations without wasting materials, as the connection structure can be repeatedly assembled and disassembled.
3Reliability
If bolts or screws are used for connection, then the reliability of the connection is improved, but the productivity of assembly and disassembly deteriorates
Solution Approach 1:
The complex fastening operation of tightening bolts or screws is extracted and replaced by a simple sliding and clamping action. The insertion part slides along the guide rails and triggers the clamping protrusion to engage with the clamping hole, significantly reducing the time and effort required for assembly and disassembly while maintaining connection reliability.
Solution Approach 2:
The connection structure is designed to be self-aligning through the guide rails. As the insertion part slides in, it automatically guides the clamping protrusion into the clamping hole without requiring precise manual alignment, making the assembly process faster and more reliable.
Data Source
AI summary
The disclosure discloses a sofa backrest connection structure, including a first member and a second member, the first member includes a first base plate, two guide rails symmetrically arranged on the first base plate, and a limiting part arranged on the first base plate, and the limiting part is provided with a clamping protrusion; the second member includes a second base plate and a first horizontal plate connected to the second base plate, the second base plate includes an insertion part, and the insertion part is provided with a clamping hole matched with the clamping protrusion; after the insertion part is slidably inserted into and fitted with the two guide rails, the clamping protrusion is clamped in the clamping hole; and the first horizontal plate is used for being connected with a sofa seat frame, and the first base plate is used for being connected with a sofa backrest.