Bicycle Wireless Control for Saddle Height and Gear Shifting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bicycle height adjusting assemblies and electronic derailleurs face issues with slow and imprecise operations due to long cables, leading to potential malfunctions and increased maintenance costs, especially in designs that require unnecessary components like front derailleurs for mountain bikes with single chain rings.
Innovation Solution
A bicycle controlling device integrating a lifting controller, shifting controller, height adjusting assembly, and electric rear derailleur with wireless communication units and motors, which reduces cable length, eliminates the need for front derailleurs, and enhances operational precision and convenience by using a seat height controller to manage saddle height and gear shifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional height adjusting assembly uses a long cable from the lever to the lifting structure, then the structure can be simple and easy to manufacture, but the kinetic transmission is affected and the operation becomes slow and imprecise
Solution Approach 1:
The patent extracts the control function from the grip lever and relocates it to the seat tube, eliminating the need for long cables. The control unit is positioned at the seat tube near the height adjusting assembly, directly controlling the motor without requiring extensive cable routing through the bicycle frame.
Solution Approach 2:
The patent introduces a wireless communication unit as an intermediary between the control unit and the motor-driven lifting mechanism. This eliminates the mechanical cable connection entirely, allowing precise control signals to be transmitted wirelessly while the cable is used only for power supply, significantly reducing cable length and improving response precision.
2Ease of operation
If a front derailleur is installed on mountain bikes with single chain rings to control the rear derailleur, then the rear derailleur can be controlled, but the loading on the bicycle increases and maintenance cost increases
Solution Approach 1:
The control unit mounted on the seat tube serves multiple functions: it controls both the height adjusting assembly and the rear derailleur. This eliminates the need for a separate front derailleur control system, reducing overall system weight while maintaining full control capability for both functions through a single integrated unit.
Solution Approach 2:
The patent merges the control functions for seat height adjustment and rear derailleur shifting into a single control unit located on the seat tube. This consolidation eliminates redundant components like the front derailleur, reducing bicycle loading while preserving all necessary control capabilities through unified wireless communication and motor control.
3Ease of operation
If a front derailleur is installed on mountain bikes with single chain rings to control the rear derailleur, then the rear derailleur can be controlled, but the likelihood of additional maintenance cost increases
Solution Approach 1:
The control unit mounted on the seat tube serves multiple functions: it controls both the height adjusting assembly and the rear derailleur. This eliminates the need for a separate front derailleur control system, reducing overall system weight while maintaining full control capability for both functions through a single integrated unit.
Solution Approach 2:
The patent merges the control functions for seat height adjustment and rear derailleur shifting into a single control unit located on the seat tube. This consolidation eliminates redundant components like the front derailleur, reducing bicycle loading while preserving all necessary control capabilities through unified wireless communication and motor control.
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
The solution improves riding flexibility, convenience, and practicality by integrating control methods for the rear derailleur and saddle lifter, reducing cable interference, minimizing maintenance costs, and preventing malfunctions, while maintaining efficient operation.
Implementation Method 1
an electric rear derailleur including a movable portion, a chain shifter connected to the movable portion, and a first motor, wherein the first motor is adapted to drive the movable portion to move the chain shifter between a plurality of positions
Implementation Method 2
a second motor adapted to drive the inner tube to extend or retract in the outer tube
Implementation Method 3
a lifting controller including a lifting operation interface and a first wireless communication unit... a shifting controller positioned on the grip and including a shifting operation interface and a second wireless communication unit... a wireless signal receiver... adapted to receive and transmit a lifting control signal generated by the first wireless communication unit, or a shifting control signal generated by the second wireless communication unit
Data Source
AI summary
A bicycle controlling device including a lifting controller, a shifting controller, a height adjusting assembly, an electric rear derailleur and a seat height controller is disclosed. The lifting controller and the shifting controller are respectively adapted to generate and emit a lifting control signal or a shifting control signal. The height adjusting assembly is positioned in the seat tube and can be controllably lifted or fixed at a height. The seat height controller is fixed to the seat tube, and includes a wireless signal receiver, a control circuit and a motor. The wireless signal receiver is adapted to receive/transmit the lifting/shifting control signal to the control circuit, which is electrically connected with the electric rear derailleur and the motor, and controls the motor/the electric rear derailleur with the received lifting/shifting control signal. The motor can mechanically control the lifting of the height adjusting assembly or fix its height.