Modular Sofa Armrest Structure to Reduce Packaging Volume

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current sofa designs with detachable armrests require large packaging sizes during transportation, leading to increased costs due to the spatial structure of the armrests, which occupies a significant volume and complicates warehousing and transportation processes.

Innovation Solution

A modular sofa armrest structure comprising a fixing frame body with connection rods and pipes, an inner chamber protection layer, and a detachable sofa armrest covering, allowing for disassembly into smaller components using hook-and-loop fasteners and threaded connections, enabling efficient packing and assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the sofa armrest is designed as a spatial structure to provide comfort, then the comfort is improved, but the packaging size and transportation cost increase

Engineering Contradiction:
ImprovecomfortVSAvoidpackaging size
Core Design Contradiction:
Ease of operationVSVolume of stationary object

Solution Approach 1:

The armrest is divided into multiple detachable components including a first armrest component and a second armrest component that can be separated from the sofa body. This segmentation allows the armrest to maintain its spatial structure for comfort during use, while enabling compact disassembly for transportation and storage, thereby reducing packaging volume without compromising comfort.

Inventive Principle:
Principle #1Segmentation

2Stability of the object's composition

If the sofa armrest is designed as a spatial structure to maintain structural integrity, then the stability is improved, but the disassembly and assembly complexity increases

Engineering Contradiction:
Improvestructural integrityVSAvoiddisassembly and assembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

Connection components serve as intermediaries between the armrest components and the sofa body. These connection components include connecting structures that facilitate simple attachment and detachment while maintaining structural integrity when connected. The intermediary connection mechanism allows for easy disassembly and reassembly without compromising the stability of the armrest structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Volume of stationary object

If the sofa armrest is made detachable to reduce transportation volume, then the transportation cost is reduced, but the connection reliability between components decreases

Engineering Contradiction:
Improvetransportation volumeVSAvoidconnection reliability
Core Design Contradiction:
Volume of stationary objectVSReliability

Solution Approach 1:

The connection components are pre-designed with specific connecting structures that ensure reliable attachment. The preliminary design of these connection mechanisms includes features such as positioning structures and securing elements that guarantee stable connections when assembled, while still allowing for easy disassembly when needed. This preliminary preparation maintains connection reliability without preventing the volume reduction benefits of detachability.

Inventive Principle:
Principle #10Preliminary action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The modular design reduces transportation volume, lowers costs, enhances product versatility, and simplifies cleaning and replacement, while maintaining product stability and quality.

Implementation Method 1

The inner chamber protection layer is detachably arranged on the fixing frame body through hook-and-loop fasteners. The sofa armrest covering is detachably arranged on the fixing frame body through hook-and-loop fasteners

Methodology Applied
Scientific EffectHook-and-loop fastening mechanism: Mechanical Fastener

Implementation Method 2

One end of the connection rod is provided with a nut, and the other end of the connection rod is provided with an external thread structure. The end with the external thread structure of the connection rod passes through the connection through hole and the first connection hole and is connected to the internal thread structure in the second connection hole through the external thread structure.

Methodology Applied
Scientific EffectThreaded fastening: Screw

Data Source

PatentUS11707138B1Sofa armrest structure and sofa
Publication Date: 2023.07.25 GENOVA INC
  • US11707138B1 patent drawing
  • US11707138B1 patent drawing
  • US11707138B1 patent drawing

AI summary

A sofa armrest structure and a sofa are provided. A connection pipe is provided with a connection through hole. A first connection hole is formed in a first fixing frame and corresponds to the connection through hole. A second connection hole is formed in a second fixing frame and corresponds to the connection through hole, and an internal thread structure is formed in the second connection hole. One end of a connection rod is provided with a nut, and the other end of the connection rod is provided with an external thread structure. The end with the external thread structure of the connection rod passes through the connection through hole and the first connection hole and is connected to the internal thread structure in the second connection hole through the external thread structure. An inner chamber protection layer is detachably arranged on a fixing frame body through hook-and-loop fasteners.