Anti-reverse Rotation Mechanism for Power Shoe Wheels
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Solution Overview
Problem
Traditional roller skates and electric roller skates are unsafe for use on roads due to the inversion of front wheels when lifting the shoe, leading to potential falls, as the front rollers can invert and cause the lifted shoe heels to move backward.
Innovation Solution
The implementation of an Anti-reverse rotation mechanism in power shoe devices, featuring a rotating shaft, ratchet wheel, and pawl, which prevents front wheel inversion, combined with a motor-driven transmission system that maintains stability by ensuring at least four wheels are in contact with the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the front rollers apply pressure onto the ground during lifting, then the lifting force is improved, but the front rollers invert and cause the shoe heels to move backward
Solution Approach 1:
The patent applies preliminary anti-action by introducing a braking mechanism that acts in advance to prevent the harmful inversion motion. The braking component is positioned to engage with the front roller before inversion can occur, applying a counteracting force that prevents the roller from rotating backward when pressure is applied during lifting.
Solution Approach 2:
The patent uses an intermediary braking mechanism between the front roller and the ground contact point. This intermediary component (braking member) mediates the force transmission, allowing the roller to apply pressure for lifting while the braking member prevents the harmful inversion rotation by providing controlled resistance.
2Ease of operation
If the front wheels are allowed to rotate freely, then the ease of operation is improved, but the wheels invert when the shoe body forms an angle with the ground
Solution Approach 1:
The patent applies dynamics by creating a conditional rotation system. The front wheels can rotate freely under normal conditions for ease of operation, but when the shoe body forms an angle with the ground (lifting position), the braking mechanism dynamically engages to prevent inversion. This dynamic control allows the system to switch between free rotation and constrained rotation based on operational conditions.
3Productivity
If only front rollers are in contact with the ground during lifting, then the lifting efficiency is improved, but the shoe heels move backward causing falls
Solution Approach 1:
The patent converts the harmful backward movement force into a beneficial controlled braking action. When the front rollers apply pressure and tend to invert (which would cause heels to move backward), the braking mechanism captures this inversion tendency and converts it into controlled friction that prevents the harmful backward movement while still allowing efficient lifting through the front rollers.
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
This solution enhances walking safety by preventing front wheel inversion and maintaining stability, allowing users to maintain a normal walking posture and navigate complex urban environments with improved ease and speed.
Implementation Method 1
The Anti-reverse rotation mechanism includes a rotating shaft connected with the front wheels, a ratchet wheel fixed on the rotating shaft, and a pawl matched with the ratchet wheel
Data Source
AI summary
Disclosed is an anti-reverse rotation device of a power-driven shoe device, the power-driven shoe device comprising a shoe sole (1), wherein a group of front wheels (2) and a group of rear wheels (3) are arranged on a lower side surface of the shoe sole (1); and the front wheels (2) are connected to an anti-reverse rotation mechanism for preventing the front wheels (2) from rotating in reverse. The anti-reverse rotation mechanism can prevent the front wheels (2) from rotating in reverse, and as such, when the front wheels (2) are independently in contact with the ground and a certain included angle is formed between a shoe body and the ground, the situation of the front wheels (2) applying a certain pressure to the ground and the front wheels (2) rotating in reverse, such that a lifted foot moves backwards, thereby causing a person to fall down, is avoided, and walking safety is improved.