Detachable Chair Pivot Link Assembly for Compact Storage

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Solution Overview

Problem

Conventional chair structures lack the ability to be easily assembled and disassembled, preventing them from being stored in a compact form when not in use due to fixed pivoting mechanisms.

Innovation Solution

A chair structure comprising a seat frame with a first coupling element and a support base equipped with a pivot link assembly featuring a pivot axle and a latch mechanism, allowing the seat frame to be securely locked and unlocked for assembly and disassembly, enabling convenient separation and storage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a fixed pivoting mechanism is used to allow rotation of the seat portion, then the chair provides convenient use and rotation functionality, but the chair cannot be disassembled and stored in a compact form

Engineering Contradiction:

Improverotation functionalityVSAvoiddisassembly capability

Core Design Contradiction:

Ease of operationVSAdaptability or versatility

Solution Approach 1:

The chair is divided into separable components: a support base and a seat frame that can be detached from each other. The coupling element with latch mechanism allows the seat frame to be securely attached or detached from the support base, enabling disassembly for compact storage while maintaining rotation functionality when assembled.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If a latch mechanism is added to enable disassembly, then the chair can be separated for storage, but the device complexity increases

Engineering Contradiction:

Improvedisassembly capabilityVSAvoidcoupling mechanism complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The latch mechanism is designed to be operable by the user without requiring additional tools or complex procedures. The user can simply operate the latch to release or secure the coupling element, enabling easy assembly and disassembly while minimizing the complexity of the coupling mechanism.

Inventive Principle:

Principle #25Self-service

3Ease of manufacture

If a coupling element with latch is used to allow separation, then the chair can be easily assembled and disassembled, but the structural complexity increases

Engineering Contradiction:

Improveassembly convenienceVSAvoidcoupling element structure

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The latch mechanism is extracted as a separate, modular component within the coupling element, allowing it to be independently designed and manufactured. This simplifies the overall structure by separating the locking function from the coupling structure, making the chair easier to manufacture while maintaining assembly convenience.

Inventive Principle:

Principle #2Taking out (Extraction)

Data Source

PatentUS8740306B2Chair structure and method of assembling the same

Publication Date: 2014.06.03 WONDERLAND NURSERYGOODS CO LTD

AI summary

A chair structure comprises a seat frame having a first coupling element, a support base, and a pivot link assembly mounted on the support base. The pivot link assembly includes a pivot axle, and a second coupling element pivotally mounted around the pivot axle. The second coupling element includes a latch operable to lock the first coupling element with the second coupling element when the seat frame is assembled with the support base, and unlock the first coupling element from the second coupling element for allowing separation of the seat frame from the support base.