Switchable Wheel Assembly for Multi-Mode ROS Educational Cars
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Solution Overview
Problem
Existing ROS educational cars are limited by fixed wheel forms and steering modes, requiring multiple purchases to experience different playing methods, leading to high costs and complex switching processes.
Innovation Solution
A multi-mode switchable car design with a car body, bogies, a wheel assembly, a steering driving module, and a steering locking structure, allowing for easy switching between wheel types and steering modes by adjusting the steering locking structure and replacing wheel-type components, without re-arranging power and control circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If integral modules (wheel assembly + steering structure) are replaced to switch wheel forms and steering modes, then different playing methods can be experienced, but the number of components to be replaced is large and the switching process becomes complex
Solution Approach 1:
The patent divides the wheel assembly into independent replaceable modules: the wheel-type component (Mecanum wheel or ordinary wheel) can be detached and replaced independently from the hub motor and bogie. This segmentation allows users to switch wheel forms without replacing the entire wheel assembly including motor and steering components, thereby reducing the number of components to be replaced and simplifying the switching process while maintaining adaptability to different playing methods
Solution Approach 2:
The hub motor and bogie are designed as universal components that can work with both Mecanum wheels and ordinary wheels. The steering driving module can control the bogie rotation for both wheel types, and the power supply and control circuits are designed to be compatible with different wheel configurations. This multi-functionality allows a single car body to support multiple wheel forms and steering modes without requiring separate integral modules for each configuration
2Adaptability or versatility
If integral modules are replaced to switch between different wheel forms, then wheel form adaptability is improved, but power supply and control circuits need to be re-arranged resulting in high costs
Solution Approach 1:
The power supply and control circuits are designed with universal compatibility to work with both Mecanum wheel configurations and ordinary wheel configurations. The control module can recognize the wheel type and automatically adjust control parameters, while the power distribution system is designed to supply appropriate power levels regardless of wheel type. This eliminates the need to re-arrange power supply and control circuits when switching wheel forms, significantly reducing switching costs while maintaining full adaptability
3Adaptability or versatility
If multiple integral modules are purchased to experience different playing methods, then wheel form variety is improved, but costs increase
Solution Approach 1:
The car is designed as a universal platform that can accommodate both Mecanum wheels and ordinary wheels using the same hub motor, bogie, steering driving module, and control systems. Users can experience different playing methods (Mecanum four-wheel differential mode, Ackerman steering mode, four-wheel differential mode) by simply replacing the wheel-type component without needing to purchase multiple separate cars. This single-car multi-functionality approach reduces the quantity of cars needed while maintaining full variety of playing methods
Solution Approach 2:
By making the wheel-type component a separate replaceable module independent of the expensive components (hub motor, bogie, control system), the patent enables users to obtain variety through inexpensive wheel replacements rather than purchasing multiple complete car systems. This segmentation of the wheel component from the main vehicle system allows cost-effective access to multiple playing methods
Data Source
AI summary
A multi-mode switchable car includes a car body, a bogie, a wheel assembly, a steering driving module, a steering locking structure and a locking sensing structure. The car body is provided with a control module, and multiple wheel driving programs are preset. The bogie is rotatably connected to the car body. The wheel assembly includes a hub motor connected to the bogie or the car body and a wheel-type component detachably connected to the hub motor, wheel forms are switchable by connecting different wheel-type components to the hub motor. The steering driving module drives the bogie. The steering locking structure locks the bogie when located in a locking position. The locking sensing structure acquires a position of the steering locking structure and is electrically connected with the control module, and the control module switches the wheel driving programs according to position information acquired by the locking sensing structure.