Bicycle Dual Control Lever Detachable Shifting Unit
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Solution Overview
Problem
Existing bicycles with integrated electronic shifting units and brake devices require simultaneous repair or replacement when either component fails, and hydraulic brake systems risk oil leakage interfering with electronic components.
Innovation Solution
A dual control lever design where the electronic shifting unit is detachably fixed to the brake device, allowing for separate maintenance and preventing hydraulic oil interference, with adjustable positioning and optional additional electronic sending units for enhanced functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the electronic sending unit and brake device are integrally formed into one single component, then the device complexity is reduced, but the ease of repair deteriorates because simultaneous repair or replacement is required when either component fails
Solution Approach 1:
The patent divides the control lever into separable modules: the brake device and the electronic sending unit are connected through a detachable connection structure, allowing them to be separated for independent maintenance while maintaining integration during normal operation
2Device complexity
If the electronic sending unit and brake device are integrally formed, then the device complexity is reduced, but the reliability deteriorates due to risk of hydraulic oil leakage interfering with electronic components
Solution Approach 1:
The patent extracts the electronic sending unit from the hydraulic brake system by providing a detachable connection that allows separation, thereby removing the electronic components from the potential harmful environment of hydraulic oil while maintaining integrated functionality when connected
3Ease of repair
If the electronic sending unit is detachably fixed to the brake device, then the ease of repair is improved, but the device complexity increases
Solution Approach 1:
The control lever is segmented into modular components with standardized connection interfaces, enabling easy detachment for repair while maintaining a relatively simple overall structure through the use of straightforward connection mechanisms
Data Source
AI summary
A bicycle stem includes a handlebar and a dual control lever which includes a brake device and a first electronic sending unit. The first electronic sending unit is detachably fixed to the brake device. The brake device and the first electronic sending unit together form an assembly space for a handlebar installed therein. The handlebar is assembled with the brake device and the first electronic sending unit in the assembly space.