Bicycle Electric Derailleur Linkage Structure Integration
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Solution Overview
Problem
Existing bicycle electric rear derailleurs require complex configurations and multiple components, making them difficult to integrate and mount efficiently on a bicycle frame, which complicates their operation and maintenance.
Innovation Solution
A bicycle electric rear derailleur design that incorporates a base member, a movable member, and a linkage structure with integrated spaces for a wireless communication unit, charging portion, control board, operating member, display unit, connector, and data reader, allowing for a simpler configuration and integration of these components within the derailleur system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If multiple components (wireless communication unit, charging portion, control board, operating member, display unit, connector, data reader) are integrated into the linkage structure, then device complexity is reduced and ease of manufacture is improved, but the volume of the derailleur system increases
Solution Approach 1:
The patent integrates multiple functional components (wireless communication unit, charging portion, control board, operating member, display unit, connector, and data reader) into a single linkage structure. This merging of previously separate components into one integrated assembly reduces the overall system volume and simplifies the configuration, eliminating the need for multiple discrete mounting locations while maintaining all necessary functions.
Solution Approach 2:
The linkage structure is designed to perform multiple functions simultaneously by incorporating various receiving spaces for different components. The same structural element serves as both a mechanical linkage and a housing for electronic and operational components, achieving multi-functionality that reduces both volume and complexity.
2Ease of operation
If components are integrated into the linkage structure with dedicated receiving spaces, then ease of operation and reliability are improved, but device complexity increases
Solution Approach 1:
The linkage structure is divided into multiple dedicated receiving spaces, each designed to accommodate specific components (wireless communication unit receiving space, charging-portion receiving space, control-board receiving space, etc.). This segmentation provides organized, predetermined locations for each component, simplifying assembly and operation while maintaining clear structural boundaries that manage complexity.
3Volume of moving object
If at least two receiving spaces share the same space, then volume is reduced and manufacturing efficiency is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent implements shared spaces where at least two receiving spaces (e.g., wireless communication unit receiving space and control-board receiving space) are nested within the same physical volume of the linkage structure. This nesting arrangement maximizes space utilization, reducing the overall derailleur volume while requiring precise manufacturing to ensure proper positioning and accessibility of nested components.
Data Source
AI summary
A bicycle electric rear derailleur 26 comprises a base member 41, a movable member 43, and a linkage structure 45. The linkage structure 45 is configured to operatively couple the base member 41 to the movable member 43. The linkage structure 45 includes at least one of a wireless communication unit receiving space S11, a charging-portion receiving space S12, a control-board receiving space S13, an operating-member receiving space S14, a display-unit receiving space S15, a connector receiving space S16 and a data-reader receiving space S17.