Bicycle Derailleur Cable Clamping Washer Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The control cable in bicycle derailleurs can interfere with the rear wheel or other components due to improper frame manufacturing and limited positioning, which affects gear shifting efficiency.
Innovation Solution
A cable-clamping washer with a cable-bending appendage is mounted on the actuation arm, allowing it to be positioned on either surface, optimizing the cable's path and preventing interference with other parts of the bicycle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the control cable is positioned in a fixed location on the actuation arm, then the cable path is determined, but the cable may interfere with the rear wheel or other bicycle components
Solution Approach 1:
The cable-clamping washer is made movable along the actuation arm, allowing the cable path to be dynamically adjusted. The washer can be repositioned to different locations on the actuation arm to optimize the cable path and eliminate interference with the rear wheel or other components, while maintaining proper gear shifting operation.
Solution Approach 2:
The cable clamping function is separated from the actuation arm structure itself, using a distinct cable-clamping washer component. This segmentation allows the washer to be independently positioned and adjusted along the actuation arm, providing flexibility in cable routing without affecting the overall derailleur mechanism.
2Adaptability or versatility
If the cable-clamping washer is fixed to a specific position on the actuation arm, then the cable path is constrained, but adaptability to different frame configurations is reduced
Solution Approach 1:
The cable-clamping washer is designed as a universal component that can be mounted at multiple positions on the actuation arm. This single component serves multiple functions: it clamps the cable securely while allowing adjustment to different locations to accommodate various frame configurations and cable routing requirements, maximizing adaptability without requiring multiple specialized components.
Data Source
AI summary
A bicycle derailleur comprising a chain guide movable between intermediate positions. An actuation arm associated with the derailleur has a cable seat formed it. A cable-clamping washer includes with a cable-bending appendage that is insertable in the seat of the actuation arm. The actuation arm cooperates with the cable-bending appendage to lock an actuation cable in the desired position.