Sofa Armrest Sliding Rail Connection for Adjustable Assembly
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Solution Overview
Problem
Current sofa armrest connection methods using bolts or screws lack flexibility and adjustability, making it inconvenient to disassemble or adjust the position of armrests, especially for wooden structures and requiring precise hole formation in metal or plastic structures.
Innovation Solution
A sofa armrest connection structure featuring a first member with guide rails and a limiting part, and a second member with guide bars that slide and fit into the rails, allowing for adjustable connection via bolts, enhancing assembly flexibility and firmness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If bolts or screws are used to directly connect armrests with the main body, then the connection is strong and stable, but the armrests cannot be disassembled or adjusted after installation
Solution Approach 1:
The connection structure is divided into two separate members: a first member connected to the main body and a second member connected to the armrest. These members can be independently assembled and disassembled through the guide rail and guide bar sliding mechanism, while maintaining stable connection when assembled.
Solution Approach 2:
The connection structure transitions from a static fixed connection to a dynamic adjustable connection. The guide rails and guide bars enable sliding movement, allowing the armrest position to be adjusted along the guide rails while maintaining stable connection at any position.
2Strength
If bolts or screws are used to directly connect armrests with the main body, then the connection is firm, but the assembly position cannot be adjusted after installation
Solution Approach 1:
The connection allows dynamic position adjustment along the guide rails while maintaining firm connection through the limiting part or bolt fixation. The guide bars slide within the guide rails to enable position changes, and the limiting part or bolts provide firm fixation at desired positions.
Solution Approach 2:
The connection structure serves multiple functions: it provides firm connection through bolts, enables position adjustment through sliding mechanism, and offers limiting stops for predefined positions. This multi-functional design allows the same structure to achieve both strength and adaptability.
3Ease of manufacture
If installation holes are formed in metal or plastic armrests, then the armrests can be connected to the main body, but the process is troublesome and requires high position accuracy
Solution Approach 1:
The connection structure separates the positioning function (guide rails) from the fastening function (bolts). The guide rails provide positioning guidance, eliminating the need for precise hole alignment, while bolts provide the actual connection. This segmentation simplifies the manufacturing process and reduces precision requirements.
Solution Approach 2:
The guide rails and guide bars act as intermediaries between the main body and armrests. They provide positioning and guidance during assembly, eliminating the need for precise hole alignment. The limiting part then provides the final positioning, further simplifying the assembly process.
Data Source
AI summary
The disclosure discloses a sofa armrest connection structure and a sofa assembly. The connection structure includes a first member and a second member, wherein the first member includes a first base plate, two guide rails symmetrically arranged on the first base plate, and a limiting part which is arranged on the first base plate and located under the two guide rails; the second member includes a second base plate and two guide bars symmetrically arranged on the second base plate; the two guide bars are in sliding insertion-fit with the two guide rails correspondingly; the first base plate and the second base plate are each provided with a plurality of bolt holes; the first base plate is used for being connected with a sofa seat frame, and the second base plate is used for being connected with a sofa armrest.