Hub-Motor Two-Wheel Vehicle With Rotational Steering Damper
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing manually powered two-wheeled vehicles, such as skateboards, require physical exertion, are unstable at higher speeds, limited to smooth surfaces, and difficult to maneuver, discouraging their use for commuting and limiting their appeal to new riders.
Innovation Solution
A powered two-wheel vehicle with a chassis, inline wheels, a hub motor, and a steering assembly that includes a rotational damper, allowing for stable operation at higher speeds and enhanced maneuverability, featuring a compact design with a removable deck and optional training post for stability and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a manually powered two-wheeled vehicle like a skateboard is used, then the footprint is small and traffic avoidance is improved, but physical exertion is required and maneuverability is difficult
Solution Approach 1:
The patent replaces the manual mechanical propulsion system with an electric motor system. The hub motor integrated into the rear wheel provides automated propulsion, eliminating the need for manual pushing or pumping actions required by traditional skateboards, thereby significantly improving ease of operation while maintaining the compact two-wheeled footprint.
Solution Approach 2:
The patent introduces a rotational damper as an intermediary component in the steering assembly. This damper mediates between the rider's steering inputs and the front wheel, providing controlled resistance that enhances maneuverability and stability, particularly at higher speeds, while maintaining the compact design.
2Area of stationary object
If a manually powered two-wheeled vehicle is used, then the footprint is small, but stability at higher speeds is poor
Solution Approach 1:
The rotational damper serves as a critical intermediary that provides controlled resistance to steering movements. At higher speeds, this damping effect stabilizes the front wheel and steering assembly, preventing excessive oscillations and improving overall vehicle stability while maintaining the compact two-wheeled footprint.
Solution Approach 2:
The patent employs dynamic elements including the rotational damper with variable damping characteristics and the electric motor with adjustable power output. These dynamic components allow the vehicle to adapt to different speed conditions, providing enhanced stability at higher speeds while maintaining maneuverability at lower speeds, all within a compact footprint.
3Area of stationary object
If a manually powered two-wheeled vehicle is used, then the footprint is small, but the vehicle is limited to smooth surfaces
Solution Approach 1:
The electric motor system provides consistent torque delivery across various terrains, replacing the inconsistent manual propulsion of traditional skateboards. The motor's ability to deliver high starting torque and maintain power output over a wide speed range enables the compact two-wheeled vehicle to navigate diverse surfaces including rough terrain, hills, and varied urban environments.
Solution Approach 2:
The dynamic control system with adjustable power output and the rotational damper with variable damping characteristics enable the vehicle to adapt to different terrain conditions. The system can automatically adjust its behavior based on surface conditions, providing enhanced terrain adaptability while maintaining the compact footprint.
4Ease of operation
If a motorized vehicle is added to provide propulsion, then physical exertion is reduced, but device complexity increases
Solution Approach 1:
The patent merges the motor into the rear wheel hub, creating an integrated hub motor assembly. This consolidation eliminates the need for separate transmission components, chain drives, or belt systems, thereby reducing overall device complexity while providing motorized propulsion that reduces physical exertion. The battery and control systems are also integrated into the deck structure.
Solution Approach 2:
The rotational damper acts as a simplified intermediary component that provides necessary steering control without adding complex mechanical linkages. By using a single rotational damper in the steering assembly rather than multiple complex steering mechanisms, the patent maintains ease of operation with minimal increase in 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
The vehicle provides improved maneuverability, stability at higher speeds, and the ability to traverse various terrains, making it easier for new riders to control, thus increasing adoption and usability in urban environments.
Implementation Method 1
The rotational damper is connected between the head tube and the steering tube
Implementation Method 2
The rear wheel is rotatably attached to the fixed rear fork via a hub motor, wherein the hub motor provides motive power to the rear wheel
Implementation Method 3
The battery provides electrical power to the hub motor and the control system
Data Source
AI summary
A powered two-wheel vehicle includes a chassis extending between a rotatable front fork and a fixed rear fork. A deck is attached to the chassis to enclose a compartment. A front wheel is rotatably attached to the front fork and a rear wheel is rotatably attached to the rear fork via a hub motor. The steering assembly includes a head tube supported above and in front of the deck by a pair of arched frame tubes, a steering tube rotatably connected to the head tube, and a rotational damper connected between the head tube and the steering tube.