Motor-Driven Motorcycle Gearshift Mechanism
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Solution Overview
Problem
Conventional motorcycle gearshift mechanisms can damage footwear and are complex to operate, especially for those unfamiliar with shifting gears, leading to safety concerns and energy inefficiencies, particularly in urban and hilly conditions.
Innovation Solution
A vehicle shifting mechanism with a gear-shifting driving unit, comprising a motor, speed reducer, and cam, connected to a manual and auto switch, allowing for electrical control of the gearshift lever to change gears automatically, eliminating the need for manual foot operation and enhancing safety and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional gearshift lever is operated manually by foot, then the gear shifting function is achieved, but the footwear surface is scratched and damaged
Solution Approach 1:
The patent replaces the manual mechanical foot-operated gearshift lever with an electric motor-driven system. The motor (31) connects through a speed reducer to a cam (325) that automatically pushes the gearshift lever (2) to change gears, eliminating direct contact between the driver's foot and the gearshift lever, thus preventing footwear damage while maintaining gear shifting functionality
2Adaptability or versatility
If the gearshift lever is hooked up with the instep to return to previous gear, then the gear changing function is achieved, but the operation becomes complex and dangerous
Solution Approach 1:
The system performs gear shifting automatically without requiring driver intervention for the actual lever manipulation. The motor-driven cam mechanism self-actuates to push the gearshift lever forward or reverse based on control signals, making the system serve itself in the gear changing task and reducing operational complexity for the driver
Solution Approach 2:
The patent introduces an intermediary control system between the driver and the gearshift lever. The driver simply operates switches (42, 43) on the grip, and the vehicle control unit (44) processes these signals to control the motor-driven gearshifting driving unit, which then actuates the gearshift lever. This intermediary automation layer simplifies the operation while maintaining full gear changing capability
3Use of energy by moving object
If manual gear shifting is required constantly, then the power optimization is achieved, but the driving safety is reduced due to driver distraction
Solution Approach 1:
The system dynamically adapts its operation mode based on driving conditions. The driver can switch between manual gear shifting mode (for energy optimization) and automatic mode (for safety). The vehicle control unit processes switch signals to determine the appropriate operating mode, allowing the system to be flexible and adaptive rather than fixed, thus balancing energy efficiency and safety requirements
4Volume of moving object
If the gear-shifting driving unit is integrated with the transmission box, then the space utilization is improved, but the maintenance difficulty increases
Solution Approach 1:
The patent segments the gear-shifting driving unit as a separate, modular assembly that can be independently removed and serviced. The unit includes the motor (31), speed reducer, and cam (325) as an integrated module that interfaces with the transmission box but can be detached as a complete unit. This modular segmentation allows for compact integration within the vehicle while maintaining ease of maintenance, as the entire driving unit can be accessed and repaired without disassembling the transmission box
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 solution simplifies gear shifting, reduces footwear damage, improves driving safety, and optimizes energy use by automatically selecting the appropriate gear based on vehicle load conditions, making it easier for both experienced and inexperienced drivers to operate motorcycles efficiently.
Implementation Method 1
The motor is used to drive the first reduction gear and the second reduction gear to rotate
Implementation Method 2
the cam is provided on the power take-off shaft of the second reduction gear. When the motor drives the first reduction gear and the second reduction gear to rotate, the motor also drives the cam to rotate forward or reverse 360 degrees to drive the gearshift lever
Implementation Method 3
By means of the magnetic element or a convex part on a hub of the second reduction gear and the micro-motion sensor to generate sensing or pressure contact
Data Source
AI summary
A vehicle shifting mechanism includes a transmission box, a gear-shifting driving unit and a gearshift lever. Through electrical connection between a manual switch and the gear-shifting driving unit, the operation of controlling the forward or reverse gear is carried out, so that the gear-shifting driving unit drives the gearshift lever to produce the action of pushing down the gear or pushing up the gear. Through an auto switch located beside the grip of the vehicle, and in cooperation with a vehicle control unit, when the auto switch is turned on to be in automatic shift mode, the vehicle control unit receives the data of the main power motor or the engine speed and torque load of the vehicle to activate the gear-shifting driving unit to drive the gearshift lever to generate a fully automatic downshifting gear or an upshifting gear and a neutral gear control.