Single-Solenoid Bicycle ABS Valve for Brake Pressure Release
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Solution Overview
Problem
Existing anti-lock braking systems for bicycles are complex, costly, and heavy, often requiring multiple electrical actuators and valves, which increases electrical consumption and overall system weight.
Innovation Solution
A single-valve anti-lock braking system for bicycles that uses a single electrical solenoid to control the braking and unlocking sequence, featuring a piston that moves within a primary chamber to close a bypass passage and open an outflow passage, allowing brake fluid to vent into an expansion chamber, thereby reducing pressure on the brake calliper.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple electrical actuators and valves are used in ABS systems, then the braking control function is improved, but the system weight increases
Solution Approach 1:
The patent combines multiple valve functions (locking valve, opening valve, closing valve) into a single integrated valve unit that is controlled by one electrical actuator. This merging of functions reduces the number of separate components, thereby reducing system weight while maintaining the required braking control functionality through coordinated operation of the integrated valve's openings and closings.
Solution Approach 2:
The single valve unit is designed to perform multiple functions: it can lock the brake fluid, open parallel channels to accumulators, and control pressure release. This multi-functional design eliminates the need for separate actuators for each function, reducing overall system weight while preserving comprehensive braking control.
2Reliability
If multiple electrical actuators are used in ABS systems, then the braking control function is improved, but the system cost increases
Solution Approach 1:
The patent integrates multiple valve functions into a single valve unit controlled by one electrical actuator, reducing the total number of components that need to be manufactured, assembled, and tested. This consolidation lowers manufacturing complexity and material costs while maintaining full braking control capability through the coordinated operation of the integrated valve mechanisms.
3Reliability
If multiple electrical actuators are used in ABS systems, then the braking control function is improved, but the electrical consumption increases
Solution Approach 1:
The patent consolidates multiple actuator functions into a single electrical actuator that controls an integrated valve unit. This single actuator can perform locking, opening, and closing operations by coordinating the movement of the single valve unit, thereby reducing electrical consumption while maintaining effective braking control through efficient use of the single actuator's movements.
4Reliability
If multiple valves are used in ABS systems, then the braking control function is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple separate valve functions into a single integrated valve unit with coordinated opening and closing mechanisms. This integration reduces the number of separate mechanical components and simplifies the overall system architecture while maintaining the necessary braking control functions through the coordinated operation of the integrated valve's internal mechanisms.
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 system achieves a lightweight, compact, and cost-effective solution with reduced electrical consumption by using a single actuator, simplifying the mechanical and electrical components while effectively preventing wheel lock and skidding.
Implementation Method 1
a single actuating solenoid acting on an associated piston of a single, associated valve unit
Implementation Method 2
The movement the piston closes a bypass passage, formed within the valve unit, that normally connects the master cylinder to the brake calliper. By closing the bypass passage, the build-up of pressure acting on the calliper is stopped. Simultaneously, the same actuating movement of the piston opens an outflow passage within the valve unit, allowing the brake fluid to vent from the primary chamber into an expansion chamber.
Implementation Method 3
The expansion chamber provides an increased volume for the brake fluid contained between the valve unit and the brake calliper, thereby decreasing the pressure of the brake fluid acting on the calliper.
Data Source
AI summary
An anti-lock braking unit is provided which has a single actuating solenoid acting on a piston of an associated valve unit. The actuating solenoid moves the piston within a primary hydraulic chamber in fluid communication with a brake calliper. A movement of the piston closes a bypass passage formed within the valve unit, that connects a master cylinder to the brake calliper. By closing the bypass passage, the build-up of pressure acting on the calliper is stopped. Simultaneously, the movement of the piston opens an outflow passage within the valve unit, allowing a brake fluid to vent from the primary hydraulic chamber into an expansion chamber. The expansion chamber provides an increased volume for brake fluid contained between the valve unit and the brake calliper, thereby decreasing pressure of the brake fluid acting on the calliper.