Hydraulic Switch Piston Magnetic Return Mechanism
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Solution Overview
Problem
Existing hydraulic switches in bicycle brake systems rely on springs to disconnect the circuit, which can increase the overall volume and affect the appearance of the bicycle, and may not efficiently utilize the hydraulic pressure for controlling the brake lamp.
Innovation Solution
A hydraulic switch using a magnetic conductive component to move an electrically conductive piston between connected and disconnected positions, leveraging the repulsion or attraction force between magnets to control the circuit connection, thereby reducing the need for springs and minimizing the switch's volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring is used to move the piston back to disconnect the circuit, then the circuit can be reliably disconnected, but the overall volume of the switch increases and the appearance of the bicycle is affected
Solution Approach 1:
The invention extracts and removes the spring component from the hydraulic switch system. Instead of using a spring to return the piston to its initial position, the system relies on the hydraulic pressure differential and magnetic force to achieve piston movement, thereby eliminating the need for a spring and reducing the overall switch volume.
Solution Approach 2:
The invention replaces the mechanical spring-based return mechanism with a magnetic force-based system. A magnetic conductive component is introduced that interacts with a magnet in the casing to provide the necessary force to move the piston back to the disconnected position, substituting mechanical elasticity with magnetic attraction/repulsion forces.
2Ease of operation
If a spring is used to control the piston movement, then the circuit can be controlled, but the hydraulic pressure is not efficiently utilized for controlling the brake lamp
Solution Approach 1:
The invention replaces the spring-based mechanical control system with a magnetic control system that is more responsive to hydraulic pressure changes. The magnetic conductive component on the piston interacts with the magnet, creating a controllable magnetic force that responds efficiently to hydraulic pressure variations, allowing for better energy utilization.
Solution Approach 2:
The invention changes the control parameter from mechanical spring force to magnetic force, which can be more precisely controlled and responds more efficiently to hydraulic pressure changes. This parameter change allows the system to better utilize hydraulic pressure for controlling the brake lamp circuit.
3Volume of moving object
If the switch volume is reduced for better appearance, then the aesthetic aspect is improved, but the space for hydraulic components is reduced
Solution Approach 1:
The invention merges the magnetic conductive component directly onto the piston, combining multiple functions into a single integrated component. The piston serves both as the moving element for circuit control and as the carrier for the magnetic conductive component, eliminating the need for separate spaces for these components.
Solution Approach 2:
The magnetic conductive component is nested on the piston surface, utilizing the existing piston structure as a base. This nested arrangement allows the magnetic component to occupy minimal additional space while still providing the necessary magnetic interaction for piston 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 magnetic mechanism allows for a more compact design that effectively controls the brake lamp using hydraulic pressure, enhancing the aesthetic and functional aspects of the bicycle by reducing the switch's volume and improving the use of hydraulic pressure.
Implementation Method 1
The first magnetic conductive component is disposed on the electrically conductive piston and configured to provide a magnetic force to move the electrically conductive piston toward the electrically disconnected position
Implementation Method 2
when a bicycle brake lever is squeezed to cause brake oil to apply oil pressure, the oil pressure moves a piston inside the switch so as to form a circuit loop
Data Source
AI summary
The disclosure provides a hydraulic switch including a casing, a first cable, a second cable, an electrically conductive piston and a first magnetic conductive component. The casing has a chamber and a liquid channel connected to the chamber. The first cable is disposed through the casing, and the first electrical connection portion of that is located in the chamber. The second cable is disposed through the casing, and a second electrical connection portion of that is located in the chamber. The electrically conductive piston movably is disposed in the chamber. When the electrically conductive piston is in an electrically connected position, the electrically conductive piston is in electrical contact with the first electrical connection portion and the second electrical connection portion. The first magnetic conductive component is configured to provide a magnetic force to move the electrically conductive piston toward an electrically disconnected position.