Brake Fluid Pressure Control Device for Two-Wheeled Vehicles
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Solution Overview
Problem
Existing brake fluid pressure control devices designed for four-wheeled vehicles are inefficient when adapted for two-wheeled vehicles, often resulting in unnecessary electromagnetic switching valves and flow paths, making them bulky and heavy.
Innovation Solution
A compact and lightweight brake fluid pressure control device is designed for two-wheeled vehicles by optimizing the placement and symmetry of switching valve bodies, flow paths, and components such as pistons, accumulators, and a pressure sensor within a housing, with a plunger-type pump and motor for efficient brake fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a brake fluid pressure control device designed for four-wheeled vehicles is adapted for two-wheeled vehicles by simply curtailing the number of electromagnetic valves and flow paths, then the device can be applied to two-wheeled vehicles, but the device becomes bulky and heavy with wasted space
Solution Approach 1:
The device is divided into separate functional modules: a housing containing flow paths, a pump unit with electromagnetic switching valves, an accumulator, and a control unit. This segmentation allows each component to be optimized independently and arranged efficiently to reduce overall device weight and size while maintaining adaptability to two-wheeled vehicles
Solution Approach 2:
The pump unit is designed with multiple electromagnetic switching valves that can perform multiple functions: controlling brake fluid flow to different wheels, regulating pressure, and enabling antilock brake control. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall device weight and complexity
2Adaptability or versatility
If a brake fluid pressure control device designed for four-wheeled vehicles is adapted for two-wheeled vehicles by simply curtailing the number of electromagnetic valves and flow paths, then the device can be applied to two-wheeled vehicles, but wasted space arises
Solution Approach 1:
Components are nested within the housing structure: the pump unit is positioned within the housing, the accumulator is integrated into the flow path system, and the control unit is housed separately but connected. This nesting arrangement eliminates wasted space and creates a compact configuration suitable for two-wheeled vehicle applications
Solution Approach 2:
The flow paths are arranged in three-dimensional space within the housing, utilizing vertical and lateral dimensions efficiently. The pump unit and accumulator are positioned at different heights and locations to optimize space utilization, reducing the overall device volume while maintaining functionality
3Weight of stationary object
If the mounting holes for switching valve bodies are formed parallel to end edges and components are arranged symmetrically, then the device achieves compact and lightweight design, but manufacturing precision requirements increase
Solution Approach 1:
While the overall component arrangement is symmetrical for balance, the mounting holes are positioned at specific asymmetric locations optimized for weight reduction. The holes are formed parallel to end edges at precise positions that minimize device weight while the housing structure provides built-in alignment features to manage manufacturing precision requirements
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 enables a compact and lightweight brake fluid pressure control device that effectively performs antilock brake control on two-wheeled vehicles, reducing waste space and improving mounting flexibility while maintaining sophisticated pressure control capabilities.
Implementation Method 1
plural electromagnetic switching valves for switching the flow of a brake fluid that flows inside the pipe
Implementation Method 2
a pump for returning the brake fluid from the wheel cylinder to the master cylinder
Implementation Method 3
a pressure sensor that detects the pressure of the brake fluid
Data Source
AI summary
To efficiently make a brake fluid pressure control device compact and lightweight. A brake fluid pressure control device 10 includes: a block-shaped housing 30, inside of which are respectively formed a front wheel-use flow path 11 and a rear wheel-use flow path 21, with plural mounting holes being formed in each side surface of the housing 30; a pair of front wheel-use switching valve bodies 1a and 2a that are mounted in a pair of mounting holes 31a and 31b formed in a first side surface 30a that forms a substantially square shape of the housing 30, with the front wheel-use switching valve bodies 1a and 2a controlling the pressure of a brake fluid supplied to a front wheel-use wheel cylinder 103; a pair of rear wheel-use switching valve bodies 3a and 4a that are mounted in a pair of mounting holes 31c and 31d formed in the first side surface 30a of the housing 30, with the rear wheel-use switching valve bodies 3a and 4a controlling the pressure of the brake fluid supplied to a rear wheel-use wheel cylinder 106; a pressure sensor 13 that is inserted inside a mounting hole 31j in the first side surface 30a of the housing 30; and an electronic control unit 8 that drives and controls the front wheel-use and rear wheel-use switching valve bodies 1a to 4a.