Foldable Chair Frame with Gravity-Assisted Hinge and Slider Mechanism
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Solution Overview
Problem
Current folding chairs face complications in folding and unfolding due to the need for manual operation of a supporting structure, which results in instability and low comfort.
Innovation Solution
A folding chair frame design featuring hingedly connected foot tubes, sliders, and connectors that allow for automatic unfolding and folding, reducing manual effort and enhancing stability and comfort through adjustable backrests and footrests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a supporting structure is used to unfold the cross tube, then the folding chair can be supported, but the folding and unfolding process becomes complicated and requires manual operation
Solution Approach 1:
The patent implements self-service by designing the supporting structure to automatically unfold and lock into position when the chair is assembled, without requiring manual operation. The cross tube and supporting structure utilize gravitational force and structural geometry to achieve automatic deployment and stabilization, eliminating the need for user intervention during the folding/unfolding process.
2Reliability
If a supporting structure is manually unfolded, then the chair can be supported, but the structure becomes unstable and comfort is reduced
Solution Approach 1:
The patent applies dynamics by designing the supporting structure with movable components that transition from a compact folded state to an extended supported state. The supporting structure includes segments that can dynamically adjust their position and configuration, allowing the chair to achieve structural stability in the unfolded state while maintaining ease of folding. The dynamic design enables the structure to adapt between folded and unfolded configurations without compromising stability when deployed.
3Stability of the object's composition
If the cross tube is hinged to the backrest tube, then the structure becomes more stable, but the folding process becomes more complicated
Solution Approach 1:
The patent merges the cross tube and backrest tube into an integrated hinged assembly, where the cross tube is directly hinged to the backrest tube. This integration reduces the number of separate components and connection points, simplifying the overall folding mechanism while maintaining structural stability. The hinged connection allows both tubes to move together as a unified structure during folding and unfolding, reducing complexity compared to having separate adjustable components.
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 design simplifies the folding process, increases stability, and improves comfort by allowing the chair to unfold and fold automatically, reducing manual operation and enhancing user experience.
Implementation Method 1
The rear foot tube is sleeved with an anti-slip foot cover for preventing slipping
Implementation Method 2
a front foot tube and a rear foot tube hingedly connected at a top
Data Source
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AI summary
Disclosed are a foldable chair, a foldable deckchair and a foldable chair frame thereof. A foot tube assembly comprises a front foot tube and a rear foot tube connected in a hinged manner at the top. The rear foot tube is provided with a first connector, and the front foot tube is provided with a seat tube, with one end of same being hinged to the front foot tube and the other end thereof being hinged to a first sliding block. The first sliding block is hinged to a backrest tube. Two foot tube assemblies are arranged opposite each other. A second connector is arranged on each of the rear foot tubes, and a second sliding block is connected to a connecting tube, with one end of same being hinged thereto and the other end of the connecting tube being hinged to the front foot tube. A front end of each of the seat tubes is provided with a front cross tube, with one end of same being hinged thereto and the other end of the front cross tube being hinged to a bottom end of the front foot tube of the other foot tube assembly opposite the foot tube assembly where the seat tube is located. The device opens the front foot tube and the rear foot tube by means of gravity, and is fixed by the first sliding block and the second sliding block on the rear foot tube, thus solving the relatively cumbersome problem in the prior art of folding only being implemented when a support structure is manually operated.