Integrated Scooter Drive Assembly for Compact Power Transmission
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Solution Overview
Problem
Existing electric scooter-type motorcycles have drive assemblies with un-compacted and complex structures that occupy large space, increasing weight and impairing user convenience.
Innovation Solution
A compact drive assembly design integrating a drive motor, drive train, and drive control unit within a housing, with a transmission ratio of 9 to 12, occupying a ratio of 0.22 to 0.33 of the scooter's length, and featuring a modular power distribution unit to enhance efficiency and reduce weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a conventional drive assembly is used, then the scooter can provide sufficient power, but the structure becomes complex and occupies large space
Solution Approach 1:
The patent combines the drive motor, drive train, and drive control unit into a single integrated drive assembly housed within one housing. This merging of previously separate components into a unified module reduces structural complexity while maintaining all necessary power transmission functions, directly resolving the contradiction between sufficient power provision and structural simplicity.
Solution Approach 2:
The drive assembly is designed as a multi-functional unit that simultaneously provides motor function, transmission function, and control function. This universal design allows the single integrated assembly to perform multiple roles that would traditionally require separate components, thereby reducing overall structural complexity while preserving complete power delivery capability.
2Power
If a conventional drive assembly is used, then the scooter can provide sufficient power, but the space occupation increases
Solution Approach 1:
By merging the drive motor, drive train, and drive control unit into a single compact housing, the patent achieves significant space savings. The integrated design eliminates the need for separate housings and mounting structures for each component, reducing the overall volume occupied by the drive assembly while maintaining full power transmission capability.
Solution Approach 2:
The drive train components are nested within the drive motor housing, with the drive control unit integrated into the same space. This nesting arrangement allows components to be space-efficiently arranged within the housing, minimizing the external volume of the drive assembly while preserving all necessary functional elements for adequate power delivery.
3Power
If a conventional drive assembly is used, then the scooter can provide sufficient power, but the weight increases
Solution Approach 1:
The integration of drive motor, drive train, and drive control unit into a single assembly allows for optimized material usage and reduced redundant structures. By combining these components, the patent eliminates duplicate housing materials, mounting hardware, and connection elements that would exist if the components were separate, thereby reducing overall weight while maintaining sufficient drive power.
4Volume of moving object
If the drive assembly is compacted, then space occupation is reduced, but maintenance convenience may be impaired
Solution Approach 1:
While the drive assembly is compacted into a single housing, the patent applies segmentation by making the housing removable and the internal components accessible. The drive motor, drive train, and drive control unit can be individually accessed and replaced through the removable housing, maintaining ease of repair despite the compact integrated design. This segmentation of accessibility resolves the contradiction between compact size and maintenance convenience.
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 compact drive assembly reduces space occupation, enhances power transmission efficiency, and improves maintenance convenience while ensuring reliability and safety.
Implementation Method 1
The drive train is at least partially connected to the drive motor and used for reducing rotational speed and increasing torque of the power output by the drive motor. The rotational speed of the drive motor is in the range from 9000 rpm to 12000 rpm, and the transmission ratio of the drive train is in the range from 9 to 12.
Data Source
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AI summary
An electric scooter-type motorcycle substantially extending along afirst direction is disclosed. The electric scooter-type motorcycle includes a frame, a steering assembly, a vehicle cover, a vehicle controller, a lock assembly, a wheel assembly, a drive assembly, and a power battery. The steering assembly is connected to the frame. The vehicle cover is at least partially connected to the frame. The vehicle controller is connected to the frame. The lock assembly is connected to the frame and is used to lock or unlock the electric scooter-type motorcycle. The wheel assembly are at least partially connected to the frame and includes at least one front wheel and at least one rear wheel. The drive assembly includes a power output end at least partially connected to the wheel assembly for driving the wheel assembly. The power battery is used to supply electric power for the drive assembly.