Chair Back Connector Assembly With Protective Sleeves
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Solution Overview
Problem
The existing chair assembly designs face challenges with the heavy and large chair back frame being difficult to install on the seat body, exposing all assembled structures, which affects the appearance and safety, particularly due to the connector damaging the seat cushion when angle regulators rotate.
Innovation Solution
The use of fixing sleeves to sleeve connectors, along with protection cases to prevent direct contact with the seat cushion, allows for a humanitarian auxiliary design that easily fixes the chair back to the seat while maintaining safety by separating the connector from the cushion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the chair back frame is made heavy and large for structural strength, then the chair back stability is improved, but the ease of installation deteriorates
Solution Approach 1:
The chair back assembly is divided into separate components: the chair back frame, connectors, fixing sleeves, and fixing members. This segmentation allows the heavy frame to remain stable while the separate connectors and fixing mechanisms enable easier installation without requiring the entire assembly to be heavy.
2Ease of manufacture
If all assembled structures are exposed for structural visibility, then the manufacturing simplicity is improved, but the appearance quality deteriorates
Solution Approach 1:
Decoration pieces are introduced as intermediary elements that cover the exposed connectors and assembled structures. These decoration pieces maintain the simple manufacturing process while significantly improving the appearance by hiding the mechanical connection components.
3Ease of manufacture
If the connector is exposed for structural functionality, then the ease of manufacture is improved, but the object-affected harmful factors increase
Solution Approach 1:
The protection case acts as an intermediary between the connector and the seat cushion. It allows the connector to perform its structural function while preventing direct contact with the seat cushion, thereby eliminating the harmful effect of connector damage to the cushion.
Solution Approach 2:
The protection case provides beforehand protection by enclosing the connector before any potential damage can occur to the seat cushion. This preventive measure ensures the seat cushion is protected from the outset during assembly and use.
4Stability of the object's composition
If fixing members are used to secure the chair back, then the chair back stability is improved, but the device complexity increases
Solution Approach 1:
The fixing members are nested within the fixing sleeves, which themselves are part of the connector assembly. This nesting arrangement consolidates multiple fastening elements into a compact integrated structure, improving stability while minimizing the increase in overall device complexity.
Data Source
AI summary
An assembled chair includes a chair seat, a chair back, two connectors, two fixing sleeves and two protection cases. The two connectors respectively have two connection portions. The two fixing sleeves are respectively arranged at two opposite sides of the chair back. The two protection cases are respectively fixed at two opposite sides of the chair seat, and the two connectors are respectively arranged in the two protection cases, and the two connection portions emerges from the two protection cases, and the two fixing sleeves respectively sleeve the two connection portions, and at least two fixing members are respectively fixed to the two connection portions, so as to fix the chair back to the chair seat.