Motorized Transmission Drum Shifting With Gear Position Feedback
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Solution Overview
Problem
Existing gear shifting devices in all-terrain vehicles cannot detect gear information, making them inconvenient to use.
Innovation Solution
A gear shifting device comprising a drive motor with a driving toothed wheel, a transmission drum with a driven toothed wheel and a gear contactor, a gear sensor with contacts corresponding to each gear, and an electronic control unit that outputs drive signals to the motor based on shifting instructions, allowing the gear sensor to detect gear information and facilitate automatic gear shifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a gear shifting device is used in all-terrain vehicles, then gear shifting function is achieved, but gear information detection capability is lacking
Solution Approach 1:
The patent implements feedback by introducing a gear sensor that detects the position of the gear contactor and sends signals to the control unit. This feedback mechanism allows the system to know which gear is currently engaged, enabling the control unit to provide appropriate drive signals to the motor for accurate gear shifting operations.
Solution Approach 2:
The patent replaces traditional mechanical gear indication mechanisms with an electronic detection system. The gear sensor and control unit form an electronic system that substitutes for conventional mechanical indicators, providing more reliable and detectable gear information through electrical signals rather than purely mechanical means.
2Extent of automation
If automatic gear shifting is implemented, then shifting convenience is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions: it receives gear shifting instructions, processes gear sensor signals to determine current gear position, generates appropriate drive signals for the motor, and controls the gear contactor positioning. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing complexity while achieving automation.
Solution Approach 2:
The patent merges the gear detection function and the gear control function into an integrated system. The gear sensor, control unit, and motor work as a unified automated system rather than separate independent mechanisms, combining multiple functions into a coordinated whole that achieves automatic gear shifting without proportionally increasing 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
Enables convenient and automatic gear shifting by detecting gear information, improving the usability and adaptability of the gear shifting device.
Implementation Method 1
a gear sensor having a working surface in contact with the gear contactor, at least four contacts being arranged on the working surface of the gear sensor, and each contact corresponding to one gear
Implementation Method 2
an electronic control unit electrically coupled to the drive motor and configured to output a drive signal to the drive motor
Implementation Method 3
a transmission drum having a first end fixed with a driven toothed wheel and a second end provided with a gear contactor, the driven toothed wheel meshing with the driving toothed wheel
Data Source
AI summary
A gear shifting device, a transmission, and an all-terrain vehicle are disclosed. The gear shifting device includes: a drive motor having an output shaft fixed with a driving toothed wheel; a transmission drum having a first end fixed with a driven toothed wheel and a second end provided with a gear contactor; a gear sensor having a working surface in contact with the gear contactor; and an electronic control unit electrically coupled to the drive motor. The electronic control unit outputs a drive signal to the drive motor based on a gear shifting instruction, the drive motor rotates based on the drive signal, and the output shaft drives the driving toothed wheel to rotate; the transmission drum and the driven toothed wheel rotate along with rotation of the driving toothed wheel; and the gear contactor rotates to contact one of four contacts corresponding to the gear shifting instruction.