Bicycle Brake Lever Shift Switch Integration
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Solution Overview
Problem
Existing bicycle brake and shift operating devices are cumbersome for riders to perform gear shift operations efficiently, particularly in electric-powered systems where manual control is not intuitive or ergonomic.
Innovation Solution
A bicycle brake and shift operating device with a base member, brake lever, and shift switches mounted on a handlebar, allowing for intuitive and ergonomic control of electric-powered gear changing devices, with pivotally connected components and adjustable shift switch positions for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cable-type shift operating devices are used, then gear shifting function is achieved, but the device becomes cumbersome and difficult to operate efficiently
Solution Approach 1:
The patent combines the brake lever and shift operating device into a single integrated unit. The shift operating device is mounted directly on the brake lever, allowing the rider to control both braking and gear shifting from one location on the handlebar, thereby simplifying the overall device structure while improving operational ease.
Solution Approach 2:
The brake lever assembly serves multiple functions: it acts as both a braking mechanism and a gear shifting control. The shift operating device integrated on the brake lever enables gear changes without requiring separate cable-pull levers, making the single component universal for both braking and shifting operations.
2Ease of operation
If manual cable-type shift control is used, then gear changing is achieved, but the operation is not intuitive or ergonomic for electric-powered systems
Solution Approach 1:
The patent replaces traditional mechanical cable-pull shifting with an electric-powered shifting system. The shift operating device sends electrical signals to an electronic actuator that moves the derailleur, eliminating the need for manual cable tensioning and providing more intuitive, responsive gear changes that are better suited for modern electric-powered bicycles.
Solution Approach 2:
The shift operating device incorporates movable components including a lever that can pivot between positions and a button that can be pressed. This dynamic design allows the rider to easily access different shifting modes (front and rear derailleur control) through simple lever movements and button presses, making the operation ergonomic and time-efficient.
Data Source
AI summary
A bicycle brake and shift operating device is basically provided with a base member, a brake lever and a first shift switch. The base member includes a grip portion and a mounting portion. The mounting portion is configured to be mounted to a bicycle handlebar. The brake lever is pivotally connected to the base member at a pivot axis. The brake lever includes an inward facing surface and an outward facing surface. The first shift switch includes a first operating portion arranged along the inward facing surface of the brake lever. The first shift switch is arranged to electrically control a shifting device.