Detachable Chair Base with Limit Structure for Stable Foot Assembly
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Solution Overview
Problem
Existing chair legs are difficult to process due to their large size and complex structure, leading to low production efficiency and high costs in manufacturing and transportation, and their connections are not stable enough, causing instability and easy detachment.
Innovation Solution
A detachable chair leg design featuring a central support with mount portions and feet that include a fastening assembly with bolts and threaded connections, along with limit structures and guide portions for secure attachment, ensuring stability in both horizontal and longitudinal directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If chair legs are integrally formed using injection molding or casting molding, then the structural strength is improved, but the manufacturing time increases and production efficiency decreases
Solution Approach 1:
The chair leg is divided into multiple independent components: a seat plate assembly and leg assemblies. The seat plate includes a seat plate body with mounting structures, while the legs are separate components that can be manufactured independently through simple processes and then assembled together using connecting bolts, thereby improving production efficiency while maintaining structural strength
Solution Approach 2:
The mounting holes and connecting structures are integrated directly into the seat plate body and leg assemblies during their respective manufacturing processes. This merging of mounting features with the main components eliminates the need for separate machining operations, reducing manufacturing time while ensuring strong structural connections through the connecting bolts
2Stability of the object's composition
If chair legs are integrally formed with large size and complex structure, then the structural stability is improved, but the packaging and transportation cost increases
Solution Approach 1:
The chair leg structure is segmented into a seat plate assembly and multiple separate leg assemblies. These modular components can be packaged separately in a compact arrangement, reducing the overall packaging volume and transportation space required compared to a single large integral structure, while the connecting bolts ensure structural stability when assembled
Solution Approach 2:
The leg assemblies can be nested or arranged compactly within the packaging space, and the modular design allows for efficient space utilization during transportation. The separate components can be stored in an organized manner, reducing the volume occupied compared to a fully assembled large structure
3Ease of operation
If the cantilever is embedded in the groove to connect branches and steam pressure rod support block, then the assembly is simplified, but the connection stability deteriorates and the cantilever is easily detached
Solution Approach 1:
The mounting holes are pre-formed as through-holes in the seat plate body and legs during the molding process. The connecting bolts are designed to pass through these pre-formed holes, allowing for simple assembly by directly inserting and tightening the bolts, while the through-hole design ensures reliable connection by providing precise alignment and secure fastening
Solution Approach 2:
The connecting bolt acts as an intermediary element that joins the seat plate assembly and leg assemblies. This intermediate fastening component provides a reliable mechanical connection that is both simple to install and stable in use, overcoming the limitations of direct embedding while maintaining assembly simplicity
Data Source
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AI summary
The present disclosure relates to a detachable chair leg and a chair. The chair includes feet and a central support. The central support includes a support body and a plurality of mount portions, one side of the foot is provided with a mount groove. The mount portion is horizontally embedded in the mount groove, and a fastening assembly is provided between the foot and the central support to prevent the mount portion from removing laterally from the mount groove. The mount portion is provided with first limit portions, the foot is provided with second limit portions, at least one first limit portion is located at the outer side of the second limit portion along a longitudinal direction, the first limit portions and the second limit portions cooperate to form a longitudinal limit structure that prevents the foot from being separated from the mount portion in the longitudinal direction.