Sofa Frame with Folding Face Board to Reduce Transportation Space

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Solution Overview

Problem

Current sofa products are assembled structures with a face board that occupies a lot of space, leading to high transportation costs due to their size, which is not convenient for transportation.

Innovation Solution

A sofa frame design featuring folding blocks and hinges on the face board, along with a reinforcing rib, allows the face board to fold, reducing space occupation during transportation and meeting size requirements for mail orders.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a solid face board is used in the sofa structure, then the structural strength is improved, but the transportation space occupation increases

Engineering Contradiction:

Improvestructural strengthVSAvoidtransportation space occupation

Core Design Contradiction:

StrengthVSVolume of moving object

Solution Approach 1:

The face board is divided into multiple folding blocks connected by hinges, transforming a single solid board into a segmented structure that can collapse during transportation while maintaining structural integrity during use

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The face board transitions from a static solid structure to a dynamic folding structure that can change its configuration between use and transportation states, reducing volume when folded

Inventive Principle:

Principle #15Dynamics

2Stability of the object's composition

If a large-size face board is used to maintain sofa structure, then the structural stability is improved, but the transportation cost increases

Engineering Contradiction:

Improvestructural stabilityVSAvoidtransportation efficiency

Core Design Contradiction:

Stability of the object's compositionVSProductivity

Solution Approach 1:

The face board is segmented into folding blocks that can be collapsed for transportation while maintaining structural stability during use through the hinge connections

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The folding blocks can be nested or collapsed into a compact configuration during transportation, reducing the overall size while maintaining the ability to expand to full size for use

Inventive Principle:

Principle #7Nested doll (Nesting)

3Strength

If a solid face board structure is used, then the sofa structural integrity is improved, but the packing length exceeds mail order requirements

Engineering Contradiction:

Improvestructural integrityVSAvoidpacking length

Core Design Contradiction:

StrengthVSLength of moving object

Solution Approach 1:

The face board is divided into folding blocks that can be collapsed to reduce packing length while maintaining structural integrity through hinge connections

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The folding structure allows the face board to dynamically change its length between the extended position for use and the collapsed position for compact packing within mail order size limits

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS11825950B2Sofa frame and assembled sofa

Publication Date: 2023.11.28 WANG CHANG YOU

AI summary

Sofa frame and assembled sofa, comprising back boards, side boards connected to back boards, and face board connected to side boards; said side boards are relatively configured on the two sides of the back board; the two sides of the face board are respectively connected to the side boards on both sides; said face board comprises at least two folding blocks and hinges connected to the folding blocks. In the above-mentioned sofa frame, as hinges are used to connect adjacent folding blocks, the face board becomes a folding structure. Thus, during transportation, the folded face board occupies less space to reduce transportation cost.