Motorcycle Brake Lever Electric Adjustment Mechanism
Solution Overview
Problem
Existing lever devices for adjusting the position of a motorcycle brake lever require the rider to stop and remove their hand from the handlebar, which is impractical for racing and normal use, and previous solutions with flexible cables introduce friction and inaccuracy.
Innovation Solution
A lever device that uses an electric actuator to adjust the position of the brake lever independently of the handlebar, allowing the manual operating member to be positioned comfortably and operated by the rider without mechanical transmission, using an electric motor and control unit to adjust the position with precision and fine steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a threaded pin is used to adjust the brake lever position, then the position can be adjusted, but the rider must stop and remove their hand from the handlebar
Solution Approach 1:
The patent replaces the manual mechanical adjustment system (threaded pin requiring hand operation) with an electric motor-driven system. The electric actuator automatically adjusts the brake lever position through a threaded rod, eliminating the need for the rider to manually operate the adjustment mechanism while maintaining full adjustability.
2Ease of operation
If a flexible cable is used to remotely operate the threaded pin, then the rider can adjust without stopping, but friction and inaccuracy are introduced
Solution Approach 1:
The patent eliminates the flexible cable mechanical transmission system and replaces it with an electric motor-driven threaded rod system. This substitution removes the 90° fold requirement and associated friction, providing direct, precise, and accurate adjustment transmission from the electric actuator to the brake lever positioning mechanism.
3Device complexity
If the brake lever position is fixed relative to the handlebar, then the structure is simple, but it cannot accommodate different user requirements
Solution Approach 1:
The patent segments the brake lever positioning system into adjustable components: the brake lever is made detachable and repositionable relative to the handlebar through the electric actuator mechanism. This allows the system to maintain simple installation while providing multiple positioning options to accommodate different rider preferences and anthropometric variations.
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 comfortable and precise adjustment of the brake lever position without removing the hand from the handlebar, reducing friction and inaccuracy, and is suitable for racing and normal applications by providing a reliable and tactile-sensitive operation.
Implementation Method 1
characterized in that it is provided with an electric actuator (17) to change the position of the adjusting member (16) as a function of an electric power supplied to the electric actuator (17)
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
A lever device (1) for operating a hydraulic actuator (3), particularly for a motorcycle, comprises a support (5) that can be connected to a bearing structure (4), a hydraulic actuator (3) connected to the support (5), a main lever (2), pivotally connected to the support (5) and intended to be operated by being moved close to or away from said hydraulic actuator (3) and a timing lever (9) that is pivotally connected to said support (5) and connected to the main lever (2) such as to operate the hydraulic actuator (3) while the main lever (2) is being moved close to the hydraulic actuator (3). An adjusting member (16) is interposed between the main lever (2) and the timing lever (9) and the position of the adjusting member defines the relative position between said levers (2,9). An electric actuator (17) changes the position of the adjusting member (16) as a function of an electric power supplied to the actuator by means of supply means. A manual operating member (23) interacts with the power supply means such as to adjust said power supply.