Hydraulic Pressure Control Unit Layout for Compact Motorcycle Brakes
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Solution Overview
Problem
The conventional hydraulic pressure control units for straddle-type vehicles face limitations in component layout and mountability, making downsizing challenging due to the projection of the motor and hydraulic pressure regulation valve in opposite directions, which restricts space utilization.
Innovation Solution
The hydraulic pressure control unit integrates a gear pump as the pressure-applying mechanism, using a small-sized motor with reduced torque requirements, and positions the motor and hydraulic pressure regulation valve on the same side surface of the base body, allowing shared installation space and reducing the unit's size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the motor and hydraulic pressure regulation valve are positioned on opposite sides of the base body, then each component has sufficient installation space, but the overall unit size increases and mountability is restricted
Solution Approach 1:
The motor and hydraulic pressure regulation valve are merged into the same installation region (side surface) of the base body, allowing them to share space rather than requiring separate opposite sides. This spatial consolidation directly reduces the overall unit footprint while maintaining proper component spacing and connectivity.
Solution Approach 2:
Instead of arranging components along one dimension (opposite sides), the invention utilizes the base body's side surface as a shared installation plane, effectively using two-dimensional space allocation. This allows both components to be mounted on the same face, optimizing space utilization and reducing the unit's external dimensions.
2Power
If a piston pump is used to apply pressure to the brake fluid, then sufficient braking force is generated, but the motor size and torque requirements increase
Solution Approach 1:
The invention changes the pump type from piston pump to gear pump, which fundamentally alters the torque characteristics and motor size requirements. The gear pump design achieves the necessary brake fluid pressure with significantly reduced motor torque, allowing for a smaller, lighter motor while maintaining adequate braking force.
3Ease of manufacture
If conventional component layout is used with motor and valve on opposite sides, then component installation is straightforward, but the hydraulic pressure control unit cannot be downsized
Solution Approach 1:
Both the motor and hydraulic pressure regulation valve are installed on the same side surface of the base body, merging their installation locations. This approach maintains manufacturing simplicity while achieving compact dimensions suitable for straddle-type vehicle constraints.
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 configuration enables downsizing and cost reduction of the hydraulic pressure control unit by utilizing a smaller motor and optimizing space allocation, while maintaining effective brake fluid pressure control.
Implementation Method 1
a gear pump that applies a pressure to a brake fluid in the channel
Data Source
AI summary
To obtain a hydraulic pressure control unit for a straddle-type vehicle, downsizing of the hydraulic pressure control unit being enabled.The hydraulic pressure control unit according to the invention is a hydraulic pressure control unit for a brake system mounted to the straddle-type vehicle, and includes: a base body formed with a brake fluid channel; a gear pump applying a pressure to a brake fluid in the channel; a motor as a drive source of the gear pump; and a hydraulic pressure regulation valve opening/closing the channel. The motor and the hydraulic pressure regulation valve are provided to the same side surface of the base body.