Automatic folding chair
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Solution Overview
Problem
Existing folding chairs lack stability when unfolded due to a lack of direct connection between the C-shaped body and the rear support block, leading to potential safety hazards and require manual effort for folding, making the process inconvenient and not automatically foldable.
Innovation Solution
An automatic folding chair design featuring a folding chair frame with an automatic folding assembly that includes a telescopic rod with a self-locking piece, allowing the chair to lock in place for stability and unlock for automatic folding, utilizing detachable rods and a spring wire system for enhanced support and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the chair uses a conventional folding structure without direct connection between the C-shaped body and rear support block, then the structure is simpler and easier to manufacture, but the stability when unfolded is insufficient and safety hazards may occur
Solution Approach 1:
The patent introduces an arc rod as an intermediary component that connects the C-shaped body to the rear support block through the front support blocks. This arc rod acts as a mediator that transmits and distributes forces, providing lateral support and stabilizing the chair when unfolded, while maintaining a relatively simple overall structure.
Solution Approach 2:
The patent adds a new dimensional element by introducing the arc rod that connects diagonally across the chair structure from the C-shaped body to the rear support block. This creates a three-dimensional triangular support structure that enhances stability without significantly increasing manufacturing complexity.
2Volume of moving object
If the chair requires manual effort to push the C-shaped body backward for folding, then the structure can be compact, but the folding process is not convenient and automatic folding cannot be realized
Solution Approach 1:
The patent implements self-service by allowing the chair to fold automatically through the mechanical action of pushing the seat forward. The arc rod and connecting rods work together to convert the forward motion of the seat into the folding motion of the entire chair structure, eliminating the need for manual pushing of the C-shaped body backward.
Solution Approach 2:
The patent uses dynamic mechanical linkages with the arc rod and connecting rods that allow the chair to transition smoothly between folded and unfolded states. The dynamic interaction between these components enables automatic folding when the seat is pushed forward, while maintaining structural integrity when unfolded.
3Device complexity
If the chair lacks a direct connection structure between the C-shaped body and rear support block, then the device complexity is reduced, but the reliability and safety of the chair are compromised
Solution Approach 1:
The patent segments the connection structure into multiple components: the arc rod, front support blocks, and rear support block. This segmentation allows each component to perform a specific function while collectively providing reliable lateral support and stability, without requiring a single complex direct connection between the C-shaped body and rear support block.
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 automatic folding chair achieves improved stability and safety by locking in place, while the automatic folding mechanism simplifies user operation and reduces storage volume, enhancing portability.
Implementation Method 1
The telescopic rod is an elastic rod that can be axially elongated under external force, axially contracted under its own internal force, or axially contracted under external force and axially elongated under its own internal force
Implementation Method 2
utilizing detachable rods and a spring wire system for enhanced support and ease of use
Data Source
AI summary
The invention discloses an automatic folding chair, comprising: a chair seat and a folding chair frame, wherein the folding chair frame comprises an automatic folding assembly, a rear supporting seat, and two front supporting seats symmetrically arranged on the left and the right; the automatic folding assembly comprises an adapter, a telescopic rod, and second connecting rods; the telescopic rod is further provided with a self-locking piece, and the self-locking piece has a locked state and an unlocked state; in the locked state, the self-locking piece can restrict the telescopic rod to expand and contract, which can improve the stability of the chair; in the unlocked state, the telescopic rod can actively expand and contract, which can simplify the user's operation and improve the convenience of use.