Rotational-Connection Scooter for Side-to-Side Propulsion
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Solution Overview
Problem
Existing scooters require users to push off the ground or use a motor for propulsion, limiting the recreational experience and design flexibility.
Innovation Solution
A scooter design featuring a frame structure with pivotable rear wheels and a steering mechanism that allows propulsion through side-to-side weight shifting, optionally enhanced by an electric motor for power assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a motor is used for propulsion, then the scooter can move without foot pushing, but the device complexity and cost increase
Solution Approach 1:
The scooter utilizes the user's own body weight and movement to propel the vehicle. By shifting weight between feet on the platform, the user creates lateral forces that pivot the rear wheels and advance the scooter without requiring an external motor or power source.
Solution Approach 2:
The patent replaces the traditional motor-driven mechanical propulsion system with a human-powered mechanical system. The user's body movement directly drives the propulsion mechanism through weight shifting, eliminating the need for motors, batteries, or power transmission components.
2Device complexity
If the scooter requires foot pushing for propulsion, then the device structure can be simpler, but the ease of operation and recreational experience are reduced
Solution Approach 1:
The scooter employs dynamic weight shifting between the user's feet to create lateral forces. This dynamic movement causes the rear wheels to pivot and the scooter to advance, transforming the propulsion method from static foot-pushing to dynamic body-based propulsion.
Solution Approach 2:
Instead of propelling the scooter forward through direct foot-pushing against the ground, the system uses lateral weight shifting in a different dimensional approach. The user shifts weight left and right, which through the pivotable rear wheel mechanism, translates into forward motion.
3Device complexity
If the rear wheels are fixed in direction, then the structure is simpler, but the ability to return to forward-facing direction is reduced
Solution Approach 1:
The rear wheels are mounted on pivot axes that allow them to dynamically change orientation. When lateral forces are applied during weight shifting, the wheels pivot to align with the force direction and automatically return to their forward-facing position when the force is removed, providing self-correcting stability.
Solution Approach 2:
A biasing mechanism (such as a spring) is incorporated to provide a restoring force that counteracts lateral deviations of the rear wheels. This counterweight mechanism ensures the wheels return to their forward-facing orientation, maintaining stability without requiring complex active control systems.
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 motor-free propulsion through body movement, enhancing user interaction and design versatility.
Implementation Method 1
The at least one rear wheel is mounted in a biased direction arrangement such that the at least one rear wheel is biased to return to a generally forward-facing direction
Data Source
AI summary
A scooter device that can be propelled by side to side movement of a user is disclosed. The scooter device includes at least a first front wheel, at least a second and a third rearward located wheel, a frame structure through which the first wheel is coupled to the second and third wheels, wherein the second and third rearward located wheels are mounted in a biased direction arrangement and a steering mechanism that has a vertically ascending control member and is coupled to the first wheel such that turning of the steering mechanism achieves a turning of the first wheel, the steering mechanism further coupled to the frame structure such that the steering mechanism may be tilted relative to the frame structure. The frame structure can includes a first foot placement platform extending above the second wheel and a second foot placement platform extending above the third wheel.