Handlebar Throttle Grip Feedback via Electric Motor
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Solution Overview
Problem
In saddle type vehicles, the need for a push-pull cable between the throttle drum and throttle grip limits the design and functionality, particularly in feeding back the rotational movement of the valve shaft driven by an electric motor.
Innovation Solution
A grip-driving electric motor is integrated into the steering handle, interlocked with the throttle grip, allowing it to rotate in response to the valve shaft's movement, eliminating the need for a push-pull cable and enabling the throttle grip to follow the rotation of a rotating member, which includes a cancel switch for automatic cruising control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a push-pull cable is used to connect the throttle drum and throttle grip, then the rotational movement can be transmitted, but the device complexity increases and the design freedom is limited
Solution Approach 1:
The patent replaces the mechanical cable transmission system with an electric motor-driven rotational feedback mechanism. The grip-driving electric motor (37) directly rotates the throttle grip (36) based on valve shaft rotation amount, eliminating the need for push-pull cables while achieving the same feedback function.
Solution Approach 2:
The invention extracts and removes the cable system from the throttle control mechanism. By using independent electric motors at both the valve shaft and throttle grip ends, the patent eliminates the intermediate cable connection, simplifying the overall device structure.
2Reliability
If a push-pull cable is installed between throttle drum and throttle grip, then rotational movement transmission is achieved, but the overall structure becomes more complex
Solution Approach 1:
The patent substitutes the mechanical cable-based rotational feedback system with an electromechanical system using the grip-driving electric motor (37). This motor receives rotation amount information and directly drives the throttle grip rotation, maintaining reliability while reducing mechanical complexity.
3Adaptability or versatility
If cable-based throttle control is used, then simple structure is maintained, but adaptability for automatic cruise control is limited
Solution Approach 1:
The patent implements a dynamic control system where the grip-driving electric motor (37) can actively adjust throttle grip rotation based on various operating conditions. This dynamic capability enables automatic cruise control functionality, allowing the system to adapt to different driving scenarios while maintaining a relatively simple overall structure.
Solution Approach 2:
The electric motor-based throttle control system serves multiple functions: it provides basic throttle control, enables automatic cruise control, and allows for future expansion of control algorithms. This multi-functionality increases adaptability without proportionally increasing device complexity.
Data Source
AI summary
A saddle type vehicle is provided in which a valve shaft for a throttle valve is rotatably supported on an air intake path forming body, and a valve shaft actuator is connected to an end of the valve shaft in such a way that the rotational movement of the valve shaft is fed back to the throttle grip, whereby it is not necessary to extend a cable between the between the valve shaft and the throttle grip, and the rotational movement of the valve shaft can be fed back to the throttle grip. A grip-driving electric motor, which is moved by the amount of movement according to the amount of rotation of the valve shaft in response to the operation of the actuator, is disposed on the steering handle, and is interlocked and connected to the throttle grip.