Fluid Reservoir Stop Valve Support to Prevent Brake Fluid Leakage
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Solution Overview
Problem
Existing brake fluid reservoirs are prone to accidental fluid leakage due to unintentional actuation of check valves, which can be triggered by damage or misalignment, and existing solutions require costly tool modifications or are not suitable for retrofitting existing brake units.
Innovation Solution
A separate check valve is positioned in the receiving seat, with support means such as a conical recess or fastening pin, to prevent unintentional actuation and reduce friction, allowing for easy adaptation of existing brake units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a shaft-like extended valve closing body is used to prevent fluid leakage, then the valve can be actuated by resting on the base of the receiving seat, but the valve closing body may be unintentionally actuated by bending, breaking off or damaging, or unintentional support on other objects
Solution Approach 1:
The support function is segmented from the valve closing body and placed in the receiving seat base, separating the actuation trigger from the valve control mechanism. This prevents the valve closing body from being unintentionally actuated while maintaining the ability to deliberately open the valve by pressing the support means.
Solution Approach 2:
A support means (ball or pin) is introduced as an intermediary element between the receiving seat base and the valve closing body. This intermediary transmits the intentional actuation force while preventing unintentional contact or damage to the valve closing body itself.
2Reliability
If the valve closing body is shortened to prevent unintentional actuation, then safety against unintentional emptying is improved, but modification or re-production of casting tools is required which is costly
Solution Approach 1:
The support function is separated from the valve closing body and placed in the receiving seat base, allowing the valve closing body to remain unchanged in length while still preventing unintentional actuation. This avoids the need for costly casting tool modifications.
Solution Approach 2:
The support means is pre-installed in the receiving seat base before the fluid container is assembled. This preliminary placement of the support function eliminates the need to modify the valve closing body itself, thereby avoiding costly tool re-production while achieving the safety goal.
3Reliability
If the support means is rounded on the valve closing body side with a point-like contact point, then friction with the valve closing body is reduced and incorrect actuation is minimized, but the design complexity increases
Solution Approach 1:
The support means is designed with a rounded, spherical contact surface that provides point-like contact with the valve closing body. This curved geometry minimizes friction and contact area, reducing the risk of incorrect actuation while maintaining simple manufacturing through standard spherical components.
Data Source
Figure 1~2
Figure 3~4
AI summary
The invention relates to a fluid reservoir (1) for supplying a consumer device (2) with a working fluid, comprising at least one connection piece (3) having a stop valve (7) arranged therein in order to prevent undesired leaking of the working fluid from the fluid reservoir (1). To increase the protection against undesired emptying of the fluid reservoir (1), the valve closing body (8) is accommodated in the fluid reservoir (1) completely within a contour formed by an outer edge (9) of the connection piece (3) when the stop valve (7) is closed, and a support means (10) is provided to support the valve closing body (8), which support means engages in the connection channel (5) at least in sections when the connection piece (3) is inserted into the accommodating seat (4) and, as a result, moves the valve closing body (8) in the connection channel (5).