Folding stool or folding table and folding frame thereof

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Solution Overview

Problem

Traditional folding stools and tables are unstable and cumbersome to operate due to their design, which results in poor bearing capacity and complex folding mechanisms.

Innovation Solution

A folding frame comprising a left frame, a right frame, and two middle support legs with sliding sleeves and link rods, along with a lock and elastic member, allows for easy folding and unfolding while maintaining stability by eliminating the need to operate multiple pairs of legs, and the frames are designed to reduce thickness when folded.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional folding stool structure with multiple legs is used, then portability is improved, but stability and bearing capacity deteriorate

Engineering Contradiction:

ImproveportabilityVSAvoidstability

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The folding stool is divided into distinct functional segments: the seat surface, four outer legs, and two inner legs. The inner legs are further segmented into upper and lower portions connected by a sliding mechanism. This segmentation allows the structure to be compact when folded while maintaining stability when unfolded, as each segment can be independently positioned and locked.

Inventive Principle:

Principle #1Segmentation

2Strength

If traditional folding stool with four pairs of legs is used, then bearing capacity is improved, but operation complexity increases

Engineering Contradiction:

Improvebearing capacityVSAvoidoperation complexity

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The patent merges the functions of multiple leg pairs by making the two inner legs work together as a unified mechanism. The sliding sleeve on each inner leg allows both inner legs to be adjusted and locked simultaneously, reducing the operational steps from managing four separate leg pairs to managing one coordinated mechanism that controls two leg pairs.

Inventive Principle:

Principle #5Merging (Combining)

3Stability of the object's composition

If inner legs are added to traditional folding stool, then stability is improved, but structure complexity increases

Engineering Contradiction:

ImprovestabilityVSAvoidstructure complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The inner legs are nested within the space between the outer legs and the seat surface. The sliding sleeves and linkages are contained within the leg structures themselves, allowing the additional stability-providing components to be integrated into the existing folding mechanism without significantly increasing the overall structural footprint or complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS11478071B2Folding stool or folding table and folding frame thereof

Publication Date: 2022.10.25 NEW TEC INTEGRATION (XIAMEN) CO LTD

AI summary

A folding stool or a folding table and a folding frame thereof. The folding frame includes a left frame, a right frame, and two middle support legs. A front end of an inner side of the left frame and a front end of an inner side of the right frame are provided with front hinge pieces that are hinged to each other, and a rear end of the inner side of the left frame and a rear end of the inner side of the right frame are provided with rear hinge pieces that are hinged to each other. Tops of the two middle support legs are respectively hinged with the front hinge pieces and the rear hinge pieces. Each of the two middle support legs is provided with a sliding sleeve.