Brake Hydraulic Pump Passage Layout for Air Bubble Release
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Solution Overview
Problem
Conventional brake hydraulic pressure controllers experience loud operating noise due to air bubbles being retained in the spring chamber of the pump assembly, which affects the hydraulic circuit's efficiency.
Innovation Solution
The brake hydraulic pressure controller design includes a channel forming member with a passage that extends upward from the spring chamber, ensuring air bubbles are released to the outer surface, preventing their retention and reducing noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the passage extends downward from the spring chamber, then the structure is simple, but air bubbles are retained in the spring chamber causing loud operating noise
Solution Approach 1:
The passage direction is inverted from the conventional downward extension to an upward extension from the spring chamber. This inversion allows air bubbles to naturally escape upward due to buoyancy force, preventing their retention in the spring chamber while maintaining structural simplicity.
Solution Approach 2:
The harmful effect of air bubble retention is converted into a beneficial outcome by utilizing the upward extension of the passage. Air bubbles that would normally be trapped are now channeled upward and expelled through the passage, transforming the potential harm into a self-cleaning mechanism that reduces operating noise.
2Productivity
If air bubbles are retained in the spring chamber, then the hydraulic circuit operates, but operating noise becomes loud
Solution Approach 1:
Air bubbles are extracted from the hydraulic circuit through the upwardly extending passage. The passage serves as an extraction pathway that removes air bubbles from the spring chamber and discharge them to the outside, eliminating the source of operating noise while preserving hydraulic circuit functionality.
Solution Approach 2:
The upwardly extending passage acts as an intermediary element between the spring chamber and the external environment. It provides a dedicated pathway for air bubbles to escape, mediating between the hydraulic circuit operation and noise reduction 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
This design effectively suppresses the retention of air bubbles, thereby minimizing operating noise and enhancing the hydraulic pressure controller's performance.
Implementation Method 1
air bubbles that are contained in the brake fluid released from the release valve 180 tend to be retained in the spring chamber 185a
Data Source
AI summary
The present invention provides a brake hydraulic pressure controller capable of suppressing retention of air bubbles on a release side of a pump.The brake hydraulic pressure controller includes: a housing; a motor attached to the housing; and plural pump elements, each of which is attached to a recess formed on a side surface of the housing and driven by a motor. Each of the pump elements includes: a suction valve suctioning a brake fluid into a pump chamber; a release valve releasing the brake fluid from the pump chamber; and a channel forming member arranged on a release side of the release valve. The channel forming member includes: a spring chamber accommodating a spring for urging a valve body of the release valve in a closing direction; and a passage communicating between the spring chamber and an outer surface of the channel forming member. The passage in the channel forming member of each of the plural pump elements extends upward from a position including a top portion of the spring chamber in a vertical direction and is connected to the outer surface.