Modular Bicycle Derailleur Motor Unit Sharing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The high cost of producing various types or configurations of electric derailleurs is attributed to the expensive motor unit, which needs to be individually prepared for each configuration, making it economically challenging to offer diverse options.
Innovation Solution
A modular design where a separate motor unit is shared among different configurations of chain guide units, allowing it to be attached to each configuration without replacement, and the chain guide unit is supported by a link mechanism for easy adjustment and stability, reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electric derailleurs of various types or configurations are individually prepared, then different bicycle frame shapes can be accommodated, but production costs become high due to expensive motor units
Solution Approach 1:
The derailleur system is divided into two independent modules: a motor unit and a chain guide unit. The motor unit remains fixed while the chain guide unit can be replaced with different configurations to match various bicycle frame shapes, eliminating the need to produce multiple complete electric derailleur assemblies.
Solution Approach 2:
A single motor unit is designed to be universally compatible with multiple types of chain guide units. This allows one motor unit to serve multiple functions across different bicycle frame configurations, reducing the need for multiple specialized motor units and lowering production costs.
2Ease of operation
If the motor unit is integrated with the chain guide unit, then the derailleur functions as a complete assembly, but replacing chain guide configurations requires replacing the entire derailleur including the expensive motor unit
Solution Approach 1:
The derailleur is segmented into a motor unit and a chain guide unit that can be independently replaced. This allows users to replace only the chain guide unit when changing configurations, rather than replacing the entire integrated assembly, significantly reducing replacement costs.
Solution Approach 2:
The motor unit is extracted from the chain guide unit to form a separate, reusable component. This extraction allows the chain guide unit to be replaced without affecting the motor unit, enabling cost-effective configuration changes while maintaining the expensive motor unit.
Data Source
AI summary
A bicycle derailleur includes a fixing member, a selected chain guide unit and a motor unit. The fixing member is configured to be fixed to a bicycle frame. The selected chain guide unit has a chain guide for guiding a bicycle chain and a support mechanism moveably supporting the chain guide relative to the fixing member. The selected chain guide unit is one of a plurality of different configurations of chain guide units. The motor unit is configured to be selectively attached to the selected chain guide unit to move the chain guide. The motor unit is configured to be mounted to each of the plurality of configurations of chain guide units.