Derailleur Power Supply Integration for Wiring Reduction
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Solution Overview
Problem
Conventional electrically operated bicycle derailleurs face issues with long wiring that can become entangled, complicated routing, increased electrical resistance, and complex assembly due to separate mounting of the power supply unit and derailleur, leading to potential breakage and inefficiencies.
Innovation Solution
Integration of a power storing unit within the derailleur apparatus, where the power supply is supported by the derailleur itself, reducing wiring length and enabling a modular, detachable design that simplifies assembly and minimizes electrical resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the power supply unit is mounted separately from the derailleur on the bicycle frame, then the power supply unit can be independently positioned and mounted, but the wiring becomes long which increases the risk of entanglement and breakage
Solution Approach 1:
The patent combines the power supply unit and derailleur into a single integrated assembly where the power supply unit is mounted on the derailleur body. This merging eliminates the need for long wiring connections between separate components, thereby reducing entanglement risk and improving wiring reliability while maintaining independent mounting capability through the derailleur's mounting interface.
2Ease of manufacture
If the power supply unit is mounted separately from the derailleur, then each component can be independently assembled, but the assembly process becomes complicated and unsightly due to long wiring routing
Solution Approach 1:
By integrating the power supply unit onto the derailleur body, the patent reduces assembly complexity from routing long wiring between separate components to simply mounting the power supply unit on the derailleur. The modular design maintains independent component assembly capability while significantly simplifying the overall assembly process and eliminating unsightly wiring routing.
3Adaptability or versatility
If long wiring is used to connect the power supply unit to the derailleur, then the components can be positioned independently, but electrical resistance increases which interferes with control signals and wastes power
Solution Approach 1:
The patent resolves the contradiction by mounting the power supply unit directly on the derailleur body, thereby minimizing wiring length to the essential minimum. This integration maintains positioning flexibility through the derailleur's mounting interface while dramatically reducing electrical resistance and associated power loss and control signal interference.
4Adaptability or versatility
If the power supply unit and derailleur are mounted separately, then the power supply can be positioned independently, but additional mounting hardware and separate installation are required
Solution Approach 1:
The patent integrates the power supply unit onto the derailleur body with a mounting structure that allows the entire integrated assembly to be mounted to the bicycle frame as a single unit. This approach maintains mounting flexibility while eliminating the need for separate mounting hardware and installation steps for the power supply unit.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces the risk of wiring entanglement, simplifies the assembly process, and minimizes electrical resistance, enhancing the reliability and efficiency of the electric derailleur system.
Implementation Method 1
a power supply unit supplies electric power to the control unit and to the drive unit
Data Source
AI summary
A bicycle derailleur apparatus comprises a derailleur including a mounting member adapted to be mounted to a bicycle frame and a chain guide coupled to the mounting member so that the chain guide moves relative to the mounting member. A power storing unit is supported by the derailleur.