Assembly-Type Chair with Rotatable Body for Horizontal Stacking

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Solution Overview

Problem

Conventional chairs occupy large volumes, making storage and transportation inefficient, especially in large quantities, due to their structural characteristics that limit stacking height and require labor-intensive vertical stacking.

Innovation Solution

An assembly-type chair with a specific structure featuring a body part with a rotatable seat plate and backrest, horizontal bar, rotating members, and connectors that allow for easy disassembly and stacking from front to back, minimizing volume and facilitating efficient storage and transportation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If chairs are designed with conventional structural characteristics, then structural stability is maintained, but storage and transportation efficiency deteriorate due to large volume occupation

Engineering Contradiction:
Improvechair volumeVSAvoidstructural stability
Core Design Contradiction:
Volume of moving objectVSStability of the object's composition

Solution Approach 1:

The chair is divided into multiple separable components including a body part, support legs, and connectors. The body part itself is segmented into a seat plate and backrest that can be rotated relative to each other. This segmentation allows the chair to be disassembled into compact components for efficient storage and transportation while maintaining structural stability when assembled through the connector mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The chair design enables stacking in multiple dimensions - both vertical stacking and front-to-back stacking. The rotatable body part allows chairs to be folded compactly and stacked horizontally in front-to-back arrangement, utilizing three-dimensional space more efficiently than conventional vertical stacking alone, thereby reducing the volume occupied by multiple chairs.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Quantity of substance

If chairs are stacked vertically in large numbers, then storage capacity is improved, but labor and time requirements increase significantly

Engineering Contradiction:
Improvenumber of chairs storedVSAvoidstacking time
Core Design Contradiction:
Quantity of substanceVSLoss of time

Solution Approach 1:

The chair incorporates rotatable members that allow the body part to rotate about the horizontal bar, enabling dynamic transformation between extended and folded positions. This dynamic capability allows chairs to be quickly folded and stacked in front-to-back arrangement without requiring complex manual manipulation, reducing both time and labor for stacking large numbers of chairs.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If chairs are designed for easy assembly, then ease of operation is improved, but structural complexity increases due to additional components like connectors and rotating members

Engineering Contradiction:
Improveassembly easeVSAvoidchair structure complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The connector is designed with self-aligning features including a front insertion protrusion that automatically guides the support leg into the correct position, and a coupling protrusion that engages with the rear support leg. The rotatable members are configured to rotate about the horizontal bar with inherent mechanical guidance. These self-service features enable easy assembly without requiring complex alignment procedures or specialized tools, despite the presence of multiple components.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11486431B2Assembly-type chair
Publication Date: 2022.11.01 DUOBACK KOREA
  • US11486431B2 patent drawing
  • US11486431B2 patent drawing
  • US11486431B2 patent drawing

AI summary

The present disclosure relates to an assembly-type chair and provides an assembly-type chair that has a specific structure, thereby conveniently storing and transporting the chair with a minimized volume, and has a structure in which a chair body part including a seat plate and a backrest is rotatable, thereby effectively storing a plurality of chairs by stacking the chairs in the horizontal direction so as to be in close contact with each other.