Front Wheel Folding Mechanism for Three-Wheel Carts
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Solution Overview
Problem
Existing front wheel folding devices for three-wheel carts, such as golf bag carts and baby carts, require multiple steps and have complex structures, making them inconvenient and time-consuming to operate.
Innovation Solution
A front wheel folding device with a fixed base and a moving base connected by a rod, featuring a gear disk and elastic press plate, allows the front wheel to be simultaneously positioned horizontally and folded, simplifying the operation by using reciprocal rotating movements to drive the wheel into a horizontal state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front wheel is disposed horizontally and then folded upward in two separate steps, then the wheel can be properly positioned and folded, but the operation becomes inconvenient and time-consuming
Solution Approach 1:
The patent combines the horizontal positioning function and the folding function into a single integrated mechanism. The moving base simultaneously performs both functions through one continuous motion when the press plate is actuated, eliminating the need for separate two-step operations and thereby improving operational convenience while reducing time consumption.
Solution Approach 2:
The patent employs a dynamic mechanism where the moving base can transition between different states (horizontal positioning and folding) through a single continuous motion. The elastic element provides dynamic control, allowing the system to automatically adjust and complete both positioning and folding in one operation, making the folding process more efficient and convenient.
2Productivity
If a complex mechanism is used to achieve simultaneous horizontal positioning and folding, then the operation becomes more efficient, but the device structure becomes more complicated
Solution Approach 1:
The moving base serves multiple functions simultaneously: it positions the wheel horizontally, drives the folding motion, and controls the overall folding process. This multi-functional design achieves high productivity without requiring separate dedicated mechanisms for each function, thereby maintaining structural simplicity while improving folding efficiency.
Solution Approach 2:
The elastic element automatically controls the movement of the moving base, providing self-service functionality. When the press plate is actuated, the elastic element naturally drives the moving base through its reciprocating motion to complete both horizontal positioning and folding, eliminating the need for complex control mechanisms and reducing overall device complexity.
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
Enables quick and convenient folding of the front wheel and cart, reducing operational complexity and saving space, applicable to various three-wheel carts including golf bag, baby, and goods transport carts.
Implementation Method 1
a fixed base with an upper end coupled to a cart frame and having an elastic press plate
Data Source
AI summary
A front wheel folding device for a three-wheel cart including a golf bag cart, a baby cart or a goods transport cart includes: a fixed base with an upper end coupled to a cart frame and having an elastic press plate and a plurality of teeth; a moving base coupled to the fixed base by a rod and having a gear disk engaged with the teeth of the fixed base for performing a reciprocal rotating movement; and a front wheel set mounted to the moving base and having a front wheel. By pressing the press plate, the moving base is released to perform a rotating movement to drive the front wheel to be disposed at a horizontal state and folded. The aligning and folding processes can be completed all at the same time to achieve a convenient and quick operation.