Self-Balancing Vehicle Steering Linkage Without Hall Sensors
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Solution Overview
Problem
The use of Hall assemblies in self-balancing vehicles with control rods increases production costs, limiting market competitiveness, and the control mainboards are not compatible with vehicles without control rods.
Innovation Solution
A mechanical signal transmission mode is employed using a steering shaft connected to a pedal base, a transmission member, and a mainboard box, which rotates with the steering shaft to transmit balance adjustments without a direct connection, allowing the control mainboard to be used in both types of vehicles, reducing costs and improving market competitiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a Hall assembly is used to detect steering shaft rotation, then steering control function is achieved, but the control mainboard becomes expensive and incompatible with vehicles without control rods
Solution Approach 1:
The patent removes the Hall assembly from the control system and extracts only the essential function of detecting steering shaft rotation. This is achieved by using the mechanical connection between the transmission member and mainboard box, where the rotation of the transmission member directly drives the rotation of the mainboard box, eliminating the need for electronic sensors and making the control mainboard compatible with both vehicle types.
Solution Approach 2:
The mainboard box is designed to serve multiple functions: it houses the control mainboard, acts as a transmission component that converts rotational motion from the transmission member into rotational motion of the mainboard box, and provides structural support. This multi-functionality eliminates the need for separate Hall assembly components and enables universal compatibility across different vehicle configurations.
2Ease of operation
If a Hall assembly is installed in the control rod to enable steering, then steering functionality is achieved, but production cost increases significantly
Solution Approach 1:
The system uses the existing mechanical components (transmission member and mainboard box) to automatically achieve the steering detection function without requiring additional sensors or electronic systems. The mechanical connection itself provides the steering control capability, making the system self-sufficient and eliminating the need for expensive Hall assemblies.
Solution Approach 2:
The patent replaces the electronic sensing system (Hall assembly) with a purely mechanical solution. The transmission member's rotation mechanically drives the mainboard box's rotation, which in turn enables the control mainboard to detect steering input through mechanical motion rather than electronic signals, significantly reducing production costs.
3Reliability
If the control mainboard is designed with Hall assembly integration, then steering detection is enabled, but the overall vehicle cost increases
Solution Approach 1:
The patent merges the function of steering detection with the existing mechanical transmission system. The transmission member and mainboard box are combined into a single mechanical linkage system where the rotation of one component directly causes the rotation of the other, integrating steering detection into the structural framework rather than adding it as a separate expensive subsystem.
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 mechanical signal transmission system reduces the number of parts in the frame structure, lowers the weight and cost of the vehicle, and maintains stable performance by using a gyroscope to sense direction changes and control hub movement for steering adjustments.
Implementation Method 1
a control mainboard integrated with a gyroscope; When the balance state of the mainboard box is broken by external force, the gyroscope senses a signal of its changing direction
Implementation Method 2
an elastic member, disposed in the cavity of the pedal base; an end of the elastic member is connected with an inner wall of the cavity of the pedal base, and another end of the elastic member is connected with an end face of the mainboard box
Data Source
AI summary
A self-balancing vehicle includes: a pedal base and a control rod, a lower portion of the control rod is provided with a steering shaft capable of rotating along with swinging of the control rod, and the steering shaft is rotatably connected with the pedal base. The self-balancing vehicle further includes: a transmission member and a mainboard box used to install a control mainboard; the transmission member is connected with the steering shaft, so as to rotate with the rotating of the steering shaft; the mainboard box is hinged in a cavity of the pedal base and located within a rotation interference range of the transmission member, and when the transmission member rotates, the mainboard box rotates or swings with interference of the transmission member. Through mechanical signal transmission, it can get rid of the limits of the Hall assembly, thus reducing the diversity requirements and costs of the control mainboard.