Handlebar Master Cylinder Layout for Easier Hydraulic Brake Mounting
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Solution Overview
Problem
Existing hydraulic master devices for vehicles with transverse handlebar tubes, such as trekking bikes and electric bicycles, face installation challenges due to limited space and complex designs, particularly when handlebar tubes have bends towards the center of the vehicle.
Innovation Solution
A hydraulic master device with a lever pivotally arranged in a receptacle and a hydraulic cylinder integrated in the steering tube, featuring a pulling device with a dual-function pull rod, displacement device, and anti-rotation mechanism, allowing for compact installation and adjustable handlebar width, with components arranged to optimize space utilization and prevent rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the master cylinder is arranged in the handlebar tube toward the center of the vehicle, then the installation space is limited and installation becomes cumbersome, but the compact layout is achieved
Solution Approach 1:
The patent inverts the conventional arrangement by positioning the master cylinder away from the center of the vehicle and toward the end of the handlebar tube. This reversal of the traditional layout resolves the space limitation problem while simplifying installation, as the master cylinder can now be mounted in the straight section of the handlebar tube rather than in the curved central area.
2Ease of operation
If the hydraulic master device is designed with a pull rod and displacement device, then the installation space is sufficient and mounting is facilitated, but the device complexity increases
Solution Approach 1:
The pull rod is designed to serve dual functions: it acts as both the actuating mechanism for the master cylinder and the piston rod. This multi-functionality reduces the number of separate components needed, thereby simplifying the overall device structure while still providing sufficient installation space and facilitating mounting.
Solution Approach 2:
The patent combines the pull rod and piston rod into a single component. By merging these two functions into one element, the device complexity is reduced while maintaining the benefits of adequate installation space and easy mounting.
3Shape
If the handlebar tube has bends towards the center of the vehicle, then the conventional design is compact, but the installation becomes difficult and space is limited
Solution Approach 1:
The master cylinder is extracted from the curved central section of the handlebar tube and repositioned toward the end of the tube. This extraction from the constrained curved area to the more open end section resolves the space limitation issue while preserving the conventional bent handlebar tube geometry.
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 design provides sufficient installation space, facilitates easy mounting, and ensures efficient operation with reduced complexity, while allowing for adjustable handlebar width and integration of additional features like brake light activation and energy recuperation.
Implementation Method 1
a hydraulic channel from the hydraulic cylinder to the hydraulic line connected to the associated hydraulic slave device can be arranged in the traction device
Data Source
Figure 1~2
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Figure 10~11
AI summary
The invention relates to a hydraulic transmitter device (1) for a hydraulic brake or clutch of steerable vehicles with a lever (10) and a hydraulic cylinder (80) which can be arranged in a steering tube (20) of the steerable vehicle, wherein the hydraulic transmitter device (1) has a pull device (70) which exerts a pull force on the piston of the hydraulic cylinder when the hydraulic transmitter device (1) is actuated.