Bleeding Screw Kick-Back Valve for Hydraulic Brake Systems
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Solution Overview
Problem
Conventional bleeding devices for hydraulic brake systems are cumbersome, require multiple personnel for operation, and suffer from uncontrolled leaks and air reintroduction, leading to incomplete bleeding and potential paint damage.
Innovation Solution
A bleeding device with a valve assembly that opens against a spring force during bleeding and closes when pressure is relieved, integrated into a screw body with a holding element for easy handling and sealing, preventing air and fluid leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bleeding screw is loosened to allow air escape, then air can be removed from the hydraulic system, but brake fluid leaks uncontrolled and can damage vehicle paint
Solution Approach 1:
The valve assembly is pre-configured with a valve body that automatically opens before bleeding begins and closes automatically when bleeding is complete, preventing uncontrolled brake fluid leakage without requiring manual intervention to tighten the screw
2Reliability
If the bleeding screw is loosened for air escape, then bleeding can occur, but air can be drawn back into the hydraulic system when the brake cylinder is released
Solution Approach 1:
The valve assembly performs self-service by automatically opening and closing based on system pressure conditions, eliminating the need for manual operation and preventing air reintroduction without requiring personnel to monitor and adjust the bleeding screw
3Productivity
If two persons operate the bleeding process with manual opening and closing of the bleeding screw, then bleeding can be performed, but the process becomes complicated and time-consuming
Solution Approach 1:
The valve assembly serves itself by automatically responding to pressure changes during the bleeding process, eliminating the need for manual operation by two persons and significantly improving bleeding efficiency without adding device complexity
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 device simplifies the bleeding process, ensures reliable air exclusion, and prevents uncontrolled brake fluid release, allowing for efficient and complete system filling without the need for constant manual operation.
Implementation Method 1
a valve body (6) that can be lifted off a valve seat (8) of the valve assembly (50) in a bleeding position of the bleeding device, against the force of a spring element (7)
Implementation Method 2
the brake fluid pressure in the brake line lifts the valve body (6) off the valve seat (8)
Data Source
AI summary
The invention relates to a device for bleeding a hydraulic system. The bleeding device comprises a venting passage which can be closed by means of a valve arrangement. In order to simplify such a bleeding device regarding the operation thereof while preventing air from being delivered in an uncontrolled manner during the bleeding process, the valve arrangement is provided with a valve member (S) which can be lifted from a valve seat (8) of the valve arrangement counter to the force of a spring element (7) in an open position of the bleeding device while being fixed to the valve seat (8) in a closed position of the bleeding device. The invention further relates to a venting screw which encompasses such a valve arrangement according to the principle of a check valve and is to be mounted in a caliper (18).