Foldable support, foldable chair and foldable table
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Solution Overview
Problem
Foldable chair frames with triangular structures suffer from structural complexity, excess parts, and poor reliability in their locking mechanisms, necessitating improvements for easier locking and unlocking.
Innovation Solution
A foldable support with a triangular frame featuring a simplified locking mechanism using a limiting elastic column and an unlocking button, allowing for easy and reliable locking and unlocking through a snap-fit connection between the third connecting rod and the third connecting block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional locking mechanism is used in the foldable chair frame, then the locking function is achieved, but the structure becomes complex with excess parts and poor reliability
Solution Approach 1:
The patent extracts and eliminates unnecessary components from traditional locking mechanisms. The simplified locking mechanism uses only essential elements: limiting elastic columns (4) that directly engage with locking holes (132) in the connecting blocks, removing redundant parts and reducing structural complexity while maintaining locking reliability.
Solution Approach 2:
The limiting elastic column serves multiple functions simultaneously: it acts as both the locking element (engaging with the locking hole) and the retaining element (held by the retaining groove). This multi-functionality reduces the number of separate components needed, simplifying the overall locking mechanism structure.
2Device complexity
If a simplified locking mechanism is used, then the structure becomes simpler with fewer parts, but the locking reliability may deteriorate
Solution Approach 1:
The retaining groove (163) is designed beforehand to accommodate and retain the limiting elastic column (4). This pre-designed retention feature ensures that the elastic column remains securely positioned during the locking and unlocking processes, preventing accidental disengagement and maintaining locking reliability despite the simplified structure.
Solution Approach 2:
The limiting elastic column automatically engages with the locking hole through its own elastic deformation and retention by the retaining groove, without requiring additional locking components or complex mechanisms. The system serves itself through the inherent properties of the elastic column and groove interaction.
3Reliability
If a complex locking mechanism is used, then the locking function is achieved, but the unlocking operation becomes difficult and time-consuming
Solution Approach 1:
The patent removes unnecessary components and steps from the unlocking process. The simplified locking mechanism allows direct access to the limiting elastic column, enabling users to press and release it for unlocking without manipulating complex mechanisms or multiple components, significantly improving ease of operation.
4Reliability
If excess parts and components are used in the locking mechanism, then the locking function is achieved, but the manufacturing cost and complexity increase
Solution Approach 1:
The patent extracts and eliminates excess parts from the locking mechanism, retaining only the essential limiting elastic column and retaining groove. This reduction in component count directly lowers manufacturing complexity and costs while preserving the core locking function and reliability.
Solution Approach 2:
The limiting elastic column performs multiple functions (locking and retaining) that would traditionally require separate components. This multi-functionality reduces the total number of parts that need to be manufactured, assembled, and inventoried, thereby reducing manufacturing complexity and cost.
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 solution provides a simple, reliable, and cost-effective locking structure with fewer components, enhancing ease of manufacturing and reducing the possibility of loosening, while facilitating convenient folding and storage of the foldable chair and table.
Implementation Method 1
the other ends of the unlocking button and the limiting elastic column, under the action of an elastic force from the spring plate, are exposed outside the second end of the third connecting rod
Data Source
AI summary
Disclosed are a foldable support, a foldable chair, and a foldable table. The foldable support includes a foldable triangular frame, and the triangular frame includes a first connecting block, a second connecting block, a third connecting block, a first connecting rod, a second connecting rod, and a third connecting rod. The second connecting block and the third connecting block are symmetrically arranged on one side of the first connecting block, the third connecting rod is provided with a first end and a second end, the first end of the third connecting rod is rotatably connected to the second connecting block, the second end of the third connecting rod is provided with a limiting elastic column and an unlocking button, and the third connecting block is provided with a connecting groove and a locking hole. The unlocking button is in linked connection with the limiting elastic column.