Fluid replenishing valve

Abstract

The present application discloses a fluid replenishment valve for a brake system of a vehicle, the fluid replenishment valve comprising: a valve body defining a primary inlet port, a secondary inlet port, and an outlet port capable of communicating with each other; a valve mechanism disposed within the valve body and configured to be capable of opening and closing the primary inlet port and the secondary inlet port; wherein the valve mechanism is configured to be movable between a first position opening the primary inlet port and a second position closing the primary inlet port; and wherein the valve mechanism is configured to be transitionable between a first configuration that closes the secondary inlet port and a second configuration that opens the secondary inlet port.

Description

Technical Field

[0001] This application generally relates to the field of vehicle engineering, and more specifically, to a fluid replenishment valve used in the braking system of a vehicle. Background Technology

[0002] EBS (Electronic Braking System) is highly regarded for its superior brake pressure control capabilities. This system receives signals from the brake pedal and, with the help of an electronic control system, precisely adjusts the braking pressure at the wheels. To ensure system reliability, even if the electronic system malfunctions, the air pressure control circuit acts as a backup, providing the driver with dual safety. This dual control mechanism ensures that EBS provides stable and efficient braking performance for the vehicle under all conditions.

[0003] The EPM (Electronic Pressure Control Module) is a crucial component of the EBS (Electronic Braking System), responsible for monitoring and regulating air pressure. Upon receiving a pressure request, the EPM rapidly adjusts the solenoid valve settings to maintain braking system stability. The EPM is designed to respond and adjust quickly under varying conditions, ensuring vehicle stability during braking.

[0004] The FBM (Foot Brake Module) integrates a displacement sensor and two air pressure control circuits. In EBS (Electronic Brake System), the FBM directly responds to the driver's braking action, outputting the corresponding braking pressure through the control circuit valves. Even in the event of an electronic control failure, the FBM can still maintain basic braking function using the backup circuit, ensuring driving safety. Summary of the Invention

[0005] One of the objectives of this application is to provide a fluid replenishment valve that can overcome at least one defect in the prior art.

[0006] One objective of this application is to provide a fluid replenishment valve that can be used simultaneously for normal operation of the braking system and as a backup operation in case of failure of the electronic pressure control module, using a single valve.

[0007] Another objective of this application is to provide a fluid replenishment valve that can automatically switch between normal and standby operation of the brake without separate control.

[0008] Another objective of this application is to provide a fluid replenishment valve that is compact in structure, requires little installation space, and is easy to install and operate.

[0009] One object of this application is to provide a fluid replenishment valve for use in a vehicle braking system, the fluid replenishment valve comprising:

[0010] A valve body that defines a primary inlet port, a secondary inlet port, and an outlet port that are communicative with each other;

[0011] A valve mechanism disposed within the valve body and configured to open and close the primary inlet port and the secondary inlet port;

[0012] The valve mechanism is configured to move between a first position where the primary inlet port is open and a second position where the primary inlet port is closed; and

[0013] The valve mechanism is configured to switch between a first configuration that closes the secondary inlet port and a second configuration that opens the secondary inlet port.

[0014] By changing the structure and position of the valve mechanism itself, the opening and closing of both the primary and secondary inlet ports can be controlled to limit different fluid flow directions and paths. Compared with the scheme of setting two loops, the structure is simple, the layout is compact, the space occupied is small, and the manufacturing and installation costs are low.

[0015] In some embodiments of the fluid replenishment valve

[0016] When the valve mechanism is in the first position with the first configuration, the fluid supply valve is in a first supply state that defines a primary flow path of fluid from the primary inlet port to the outlet port;

[0017] When the valve mechanism is in the second position with the first configuration, the fluid supply valve is in a second supply state where the primary inlet port, the secondary inlet port, and the outlet port are not connected to each other; and

[0018] When the valve mechanism is in the second position with the second configuration, the fluid supply valve is in a third supply state that defines a secondary flow path for fluid from the secondary inlet port to the outlet port.

[0019] The fluid replenishment valve can switch between these supply states to meet fluid supply needs under different conditions.

[0020] In some embodiments of the fluid replenishment valve, the valve mechanism includes a valve core and a valve element, wherein the primary inlet port is opened and closed by the valve core as the valve mechanism moves between the first position and the second position, and wherein the valve element is configured to move relative to the valve core such that the valve mechanism switches between the first configuration and the second configuration.

[0021] Through the cooperation of the valve core and valve elements, the valve mechanism can switch between the first and second structures, and can move between the first and second positions. It has a simple structure, compact layout, high reliability, and is easy and convenient to operate.

[0022] In some embodiments of the fluid replenishment valve, the valve core is provided with a primary opening and closing element. When the valve mechanism is in the first position, the primary opening and closing element opens the primary inlet port, and when the valve mechanism is in the second position, the primary opening and closing element can close the primary inlet port.

[0023] In some embodiments of the fluid replenishment valve, the primary opening and closing element is in the form of a sealing ring or has a conical sealing structure.

[0024] In some embodiments of the fluid replenishment valve, a groove is formed on the valve core to accommodate the primary opening / closing element, which is configured to move within the groove between an open position and a closed position. In the open position, the primary opening / closing element allows communication between the primary inlet port and the outlet port, and in the closed position, the primary opening / closing element prevents communication between the primary inlet port and the outlet port.

[0025] The movement of the primary opening and closing element between the open and closed positions can facilitate the operation of the valve mechanism switching from a second configuration to a first configuration and / or moving from a second position to a first position.

[0026] In some embodiments of the fluid replenishment valve, the valve core has a secondary opening / closing element opposite to the primary opening / closing element along the extension direction of the valve core, the valve element being disposed around the valve core, and a valve opening being formed on the side of the valve element near the secondary opening / closing element. When the valve mechanism is in the first configuration, the secondary opening / closing element abuts against the valve element to close the valve opening, thereby closing the secondary inlet port. When the valve mechanism is in the second configuration, the secondary opening / closing element separates from the valve element to open the secondary inlet port.

[0027] In some embodiments of the fluid replenishment valve, the secondary opening and closing element is in the form of a sealing ring or has a conical sealing structure.

[0028] In some embodiments of the fluid replenishment valve, the separation direction of the valve element from the secondary opening and closing element is parallel to or coincides with the movement direction of the valve mechanism between the first position and the second position.

[0029] Having the separation direction and the movement direction parallel or coincident with each other is beneficial to the consistency of the movement of the valve mechanism components and avoids interference between components.

[0030] In some embodiments of the fluid replenishment valve, the valve core includes a first section A and a second section B connected to each other, the primary opening and closing element is disposed on the first section A, and the secondary opening and closing element is disposed on the second section B.

[0031] Disassembling the valve core into the first section A and the second section B facilitates the assembly and installation of the valve mechanism, which in turn facilitates the assembly and operation of the fluid replenishment valve.

[0032] In some embodiments of the fluid replenishment valve, the valve mechanism is provided with a biasing element configured to bias the valve mechanism toward the first configuration.

[0033] In some embodiments of the fluid replenishment valve, the valve mechanism is provided with a biasing element, a first end of which is connected to the valve core at or near the primary opening / closing element, and a second end of which is connected to the valve element near the valve opening.

[0034] In some embodiments of the fluid replenishment valve, the switching of the valve mechanism between the first configuration and the second configuration is performed separately from the movement between the first position and the second position.

[0035] The valve mechanism switches between the first and second configurations separately from the movement between the first and second positions, which avoids disruption of fluid flow and ensures the normal operation of the fluid replenishment valve.

[0036] The fluid replenishment valve according to this application achieves the switching between normal operation and standby operation of the braking system through the switching of the valve mechanism between the first and second configurations and the movement between the first and second positions, with a structure that is simple to assemble and manufacture and easy to install. It eliminates the need for two circuits corresponding to normal operation and standby operation respectively, simplifies the overall structure, reduces the overall cost, and achieves a reliable braking effect. Attached Figure Description

[0037] A better understanding of various aspects of this application will be achieved by reading the following detailed description in conjunction with the accompanying drawings, in which:

[0038] Figure 1 This is a perspective view of a fluid replenishment valve according to some embodiments of this application.

[0039] Figure 2 This is an exploded perspective view of a fluid replenishment valve according to some embodiments of this application.

[0040] Figure 3 This is a cross-sectional view of a fluid replenishment valve according to some embodiments of this application.

[0041] Figure 3A yes Figure 3 A magnified view of section 3A.

[0042] Figure 3B Is with Figure 3A A similar operation diagram.

[0043] Figure 4 This is a schematic diagram of the operation of a fluid replenishment valve according to some embodiments of this application.

[0044] Figure 5 This is a schematic diagram of the operation of a fluid replenishment valve according to some embodiments of this application.

[0045] Figure 6 This is a schematic diagram of the operation of a fluid replenishment valve according to some embodiments of this application.

[0046] Figure 7 This is a cross-sectional view of a fluid replenishment valve according to other embodiments of this application. Detailed Implementation

[0047] The present application will now be described with reference to the accompanying drawings, which illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and to fully illustrate the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0048] It should be understood that the same reference numerals denote the same elements in all the accompanying drawings. For clarity, the dimensions of certain features may be modified in the drawings.

[0049] It should be understood that the terminology used in this specification is for describing specific embodiments only and is not intended to limit this application. All terms used in this specification (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. For the sake of brevity and / or clarity, well-known functions or structures may not be described in detail.

[0050] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the related listed items. The terms “between X and Y” and “between approximately X and Y” used in this specification should be interpreted as including both X and Y. The term “between approximately X and Y” used in this specification means “between approximately X and approximately Y,” and the term “from approximately X to Y” used in this specification means “from approximately X to approximately Y.”

[0051] In the specification, when an element is described as being "on," "attached," "connected," "coupled," or "in contact" with another element, the element can be directly located on, attached to, connected to, coupled to, or in contact with the other element, or there may be intermediate elements present. Conversely, when an element is described as being "directly" located on, directly attached to, directly connected to, directly coupled to, or directly in contact with another element, no intermediate elements are present. In the specification, the description of a feature being arranged "adjacent" to another feature can mean that a feature has a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0052] In the specification, spatial relation terms such as "up," "down," "left," "right," "front," "back," "high," and "low" describe the relationship between one feature and another in the accompanying drawings. It should be understood that spatial relation terms include not only the orientation shown in the drawings but also the different orientations of the device during use or operation. For example, when the device in the drawings is inverted, a feature previously described as "below" other features can now be described as "above" other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), in which case the relative spatial relationships will be explained accordingly.

[0053] EBS (Electronic Braking System) is highly regarded for its superior brake pressure control capabilities. This system receives signals from the brake pedal and, with the help of an electronic control system, precisely adjusts the braking pressure at the wheels. To ensure system reliability, even if the electronic system malfunctions, the air pressure control circuit acts as a backup, providing the driver with dual safety. This dual control mechanism ensures that EBS provides stable and efficient braking performance for the vehicle under all conditions.

[0054] The EPM (Electronic Pressure Control Module) is a crucial component of the EBS (Electronic Braking System), responsible for monitoring and regulating air pressure. Upon receiving a pressure request, the EPM rapidly adjusts the solenoid valve settings to maintain braking system stability. The EPM is designed to respond and adjust quickly under varying conditions, ensuring vehicle stability during braking.

[0055] The FBM (Foot Brake Module) integrates a displacement sensor and two air pressure control circuits. In EBS (Electronic Brake System), the FBM directly responds to the driver's braking action, outputting the corresponding braking pressure through the control circuit valves. Even in the event of an electronic control failure, the FBM can still maintain basic braking function using the backup circuit, ensuring driving safety.

[0056] According to some embodiments of this application, a fluid replenishment valve is provided that, using a single valve, can meet the needs of normal operation of the braking system and backup operation in case of failure of the electronic pressure control module. This fluid replenishment valve can switch between multiple operating states, particularly automatically, for both normal and backup operation of the braking system.

[0057] The fluid replenishment valve 1000 according to some embodiments of this application will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can more fully understand the technical solution of this application.

[0058] like Figure 1 and Figure 2 The figures show perspective views and exploded perspective views of a fluid replenishment valve 1000 according to some embodiments of this application. The fluid replenishment valve 1000 may include a valve body 1 and a valve mechanism 3. The valve mechanism 3 is disposed within the valve body 1. Specifically, a valve chamber 16 may be formed inside the valve body 1, and the valve mechanism 3 is disposed within the valve chamber 16. The valve mechanism 3 operates within the valve chamber 16 to switch the fluid replenishment valve 1000 between different operating states.

[0059] According to an embodiment of this application, valve body 1 may include a primary inlet port 22, a secondary inlet port 24, and an outlet port 26. The primary inlet port 22 may be fluidly connected to a pneumatic supply for the braking system via, for example, an electronic pressure control module, such that during normal operation of the braking system, fluid (e.g., air or other suitable gas) from the pneumatic supply enters the fluid replenishment valve 1000 through the primary inlet port 22. The secondary inlet port 24 may be fluidly connected to a foot brake module, such that during braking, fluid (e.g., air or other suitable gas) from the foot brake module enters the fluid replenishment valve 1000 through the secondary inlet port 24. The outlet port 26 may be fluidly connected to the braking circuit, such that fluid within the fluid replenishment valve 1000 is supplied to the braking circuit via the outlet port 26 for braking purposes.

[0060] When the outlet port 24 is fluidly connected to the brake circuit, it can be installed using the external thread provided on the outlet port 24, and can be fastened and sealed using fastener 122 and seal 124 to improve the installation stability and sealing performance of the fluid replenishment valve 1000. It should be understood that fastener 122 and seal 124 can also be omitted, or other types of components can be used instead.

[0061] The valve body 1 can be formed with any suitable shape and configuration, for example, the primary inlet port 22, the secondary inlet port 24, and the outlet port 26 can extend from the valve chamber 16 at any suitable angle and orientation. Figures 1 to 7In the illustrated embodiment, the primary inlet port 22 and the secondary inlet port 24 extend from opposite sides of the valve chamber 16, while the outlet port 26 extends substantially perpendicular to the primary inlet port 22 and the secondary inlet port 24, resulting in the valve body 1 generally forming a generally T-shaped form. For ease of description and clarity, the following description uses the illustrated shape and construction; however, those skilled in the art should understand that, unless otherwise specified, the following description also applies to valve bodies 1 having other shapes and constructions.

[0062] The valve body 1 can be formed as a single unit through processes such as die casting and machining, or it can be formed as two parts for ease of assembly. For example, the valve body 1 may include a main body 12 and a top cover 14. The main body 12 can be formed by processes such as die casting and machining, and the top cover 14 can be formed by processes such as stamping and machining. In the illustrated embodiment, the valve chamber 16, the primary inlet port 22, and the outlet port 26 can be formed on the main body 12, while the secondary inlet port 24 is formed on the top cover 14. After the valve mechanism 3 is installed into the valve chamber 16, the top cover 14 can be installed onto the main body 12 using a mounting member 142 to form a complete fluid replenishment valve 1000. The mounting member 142 can be, for example, in the form of a notched ring, which mates with a mounting groove on the main body 12 for installation. The mounting member 142 can also be, for example, in the form of a mounting bolt. Figure 7 As shown.

[0063] like Figure 3 The diagram shows a cross-sectional view of a fluid replenishment valve 1000 according to some embodiments of this application. For ease of description and clarity, the directions in which the primary inlet port 22 and the secondary inlet port 24 extend from the valve chamber 16 can be defined as the X direction, and the direction in which the outlet port 26 extends from the valve chamber 16 can be defined as the Y direction.

[0064] Without valve mechanism 3, the primary inlet port 22, secondary inlet port 24, and outlet port 26 are fluidly connected to each other through the valve chamber 16 of valve body 1. Valve mechanism 3 is disposed in valve chamber 16 and is used to open and close primary inlet port 22 and secondary inlet port 24 under different operating states to allow or prevent fluid from flowing from primary inlet port 22 to outlet port 26 and fluid from secondary inlet port 24 to outlet port 26. That is, by operating valve mechanism 3, the flow of fluid from electronic pressure control module and fluid from foot brake module into fluid replenishment valve 1000 and to outlet port 26 can be controlled. Specifically, during normal operation of the braking system, when braking is applied, under the control of the electronic pressure control module, fluid flows from the primary inlet port 22 into the fluid replenishment valve 1000 and flows out through the outlet port 26 into the braking circuit to perform the braking operation. At this time, the secondary inlet port 24 can be closed, and fluid from the foot brake module cannot enter the fluid replenishment valve 1000. However, when, for example, the electronic pressure control module malfunctions, the pressure of the fluid flowing into the fluid replenishment valve 1000 from the primary inlet port 22 may drop or even become zero, meaning no fluid flows into the fluid replenishment valve 1000 from the primary inlet port 22, severely affecting the braking effect. In this case, the backup operation of the fluid replenishment valve 1000 can be activated. That is, through the operation of the valve mechanism 3, the primary inlet port 22 can be closed and the secondary inlet port 24 can be opened, allowing fluid from the foot brake module to flow into the fluid replenishment valve 1000 from the secondary inlet port 24 and flow out through the outlet port 26 into the braking circuit to perform the braking operation.

[0065] According to some embodiments of this application, a fluid replenishment valve 1000 is provided for a vehicle braking system. The fluid replenishment valve 1000 may include: a valve body 1 defining a primary inlet port 22, a secondary inlet port 24, and an outlet port 26 that are communicatively connected to each other; and a valve mechanism 3 disposed within the valve body 1 and configured to open and close the primary inlet port 22 and the secondary inlet port 24; wherein the valve mechanism 3 is configured to move between a first position with the primary inlet port 22 open and a second position with the primary inlet port 22 closed; and wherein the valve mechanism 3 is configured to switch between a first configuration with the secondary inlet port 24 closed and a second configuration with the secondary inlet port 24 open.

[0066] As described above, the fluid replenishment valve 1000 according to this application may include a valve body 1 and a valve mechanism 3. The valve mechanism 3 may be disposed within the valve chamber 16 formed by the valve body 1, and is used to open and close the primary inlet port 22 and the secondary inlet port 24 under different operating states to allow or prevent fluid from flowing from the primary inlet port 22 to the outlet port 26 and fluid from the secondary inlet port 24 to the outlet port 26. When the valve mechanism 3 opens the primary inlet port 22, fluid is allowed to flow from the primary inlet port 22 into the valve chamber 16 and then out through the outlet port 26. When the valve mechanism 3 closes the primary inlet port 22, fluid is prevented from flowing from the primary inlet port 22 into the valve chamber 16. Similarly, when the valve mechanism 3 opens the secondary inlet port 24, fluid is allowed to flow from the secondary inlet port 24 into the valve chamber 16 and then out through the outlet port 26. When the valve mechanism 3 closes the secondary inlet port 24, fluid is prevented from flowing from the secondary inlet port 24 into the valve chamber 16.

[0067] like Figures 4 to 6 As shown, it illustrates the position and structure of valve mechanism 3 under different operating states, wherein Figure 4 The valve mechanism 3 is shown in the first configuration and in the first position. Figure 5 The valve mechanism 3 is shown in the first configuration and in the second position. Figure 6 The valve mechanism 3 is shown in the second configuration and in the second position.

[0068] According to an embodiment of this application, the valve mechanism 3 is configured to move between a first position where the primary inlet port 22 is open and a second position where the primary inlet port 22 is closed. For example... Figure 4 As shown, when valve mechanism 3 is in the first position, valve mechanism 3 opens primary inlet port 22, allowing fluid to flow from primary inlet port 22 into fluid replenishment valve 1000, for example, into valve chamber 16, and then out of fluid replenishment valve 1000 via outlet port 26, subsequently being supplied to, for example, the braking circuit. Figure 5 and Figure 6 As shown, when valve mechanism 3 is in the second position, valve mechanism 3 closes the primary inlet port 22, preventing fluid from flowing into the fluid replenishment valve 1000 from the primary inlet port 22. Valve mechanism 3 can move between the first and second positions to open and close the primary inlet port 22 accordingly, thereby allowing or preventing fluid from being supplied via the primary inlet port 22 to, for example, a braking circuit.

[0069] According to an embodiment of this application, the valve mechanism 3 is configured to switch between a first configuration that closes the secondary inlet port 24 and a second configuration that opens the secondary inlet port 24. For example... Figure 4 and Figure 5As shown, when valve mechanism 3 is in the first configuration, valve mechanism 3 closes the secondary inlet port 24, preventing fluid from flowing into the fluid replenishment valve 1000 from the secondary inlet port 24. Figure 6 As shown, when valve mechanism 3 is in the second configuration, valve mechanism 3 opens the secondary inlet port 24, allowing fluid to flow from the secondary inlet port 24 into the fluid replenishment valve 1000, for example, into the valve chamber 16, and then out of the fluid replenishment valve 1000 via the outlet port 26, subsequently being supplied to, for example, the brake circuit. Valve mechanism 3 can switch between the first and second configurations to open and close the secondary inlet port 24 accordingly, thereby allowing or preventing fluid from being supplied to, for example, the brake circuit via the secondary inlet port 24.

[0070] By modifying the structure and changing the position of the valve mechanism 3, the opening and closing of both the primary inlet port 22 and the secondary inlet port 24 can be controlled to define different fluid flow directions and paths. Compared with the scheme of setting two loops, the structure is simple, the arrangement is compact, the space occupied is small, and the manufacturing and installation costs are low. When the fluid replenishment valve 1000 is applied to the braking system, under normal operation of the braking system, the fluid for braking from the electronic pressure control module can be set to flow into the fluid replenishment valve 1000 from the primary inlet port 22. However, in the event of a failure of the electronic pressure control module, the fluid may not be able to be supplied to the fluid replenishment valve 1000 via the electronic pressure control module. In this case, by modifying the structure and changing the position of the valve mechanism 3, the fluid from the foot brake module can flow into the fluid replenishment valve 1000 from the secondary inlet port 24. Thus, the fluid replenishment valve 1000 according to this application can simultaneously meet the normal operation of the braking system under both normal operation and failure of the electronic pressure control module.

[0071] According to some embodiments of this application, when the valve mechanism 3 is in a first position with a first configuration, the fluid replenishment valve 1000 can be in a first supply state that defines a primary flow path of fluid from the primary inlet port 22 to the outlet port 26; when the valve mechanism 3 is in a second position with a first configuration, the fluid replenishment valve 1000 can be in a second supply state in which the primary inlet port 22, the secondary inlet port 24, and the outlet port 26 are not connected to each other; and when the valve mechanism 3 is in a second position with a second configuration, the fluid replenishment valve 1000 can be in a third supply state that defines a secondary flow path of fluid from the secondary inlet port 24 to the outlet port 26.

[0072] like Figure 4As shown, when valve mechanism 3 is in the first position with the first configuration, valve mechanism 3 opens the primary inlet port 22 and closes the secondary inlet port 24. At this time, fluid can flow into fluid replenishment valve 1000 from primary inlet port 22 but cannot flow into fluid replenishment valve 1000 from secondary inlet port 24. Then, fluid flows out from outlet port 26, thereby defining the primary flow path of fluid from primary inlet port 22 to outlet port 26. In this case, fluid replenishment valve 1000 is in a first supply state of supplying fluid to, for example, a brake circuit via this primary flow path. This supply state can correspond to the operating state of fluid replenishment valve 1000 when the electronic pressure control module is operating normally.

[0073] like Figure 5 As shown, when valve mechanism 3 is in the second position with the first configuration, valve mechanism 3 closes the primary inlet port 22 and the secondary inlet port 24. At this time, the primary inlet port 22, the secondary inlet port 24, and the outlet port 26 are not connected to each other, and fluid cannot enter the fluid replenishment valve 1000 from the primary inlet port 22 or the secondary inlet port 24, and therefore cannot flow out from the outlet port 26. In this case, the fluid replenishment valve 1000 is in a second supply state where no fluid is supplied to the braking circuit. This supply state can correspond to the operating state when the fluid replenishment valve 1000 needs to switch from normal operation to standby operation in the event of a failure of the electronic pressure control module.

[0074] like Figure 6 As shown, when valve mechanism 3 is in the second position with the second configuration, valve mechanism 3 closes the primary inlet port 22 and opens the secondary inlet port 24. At this time, fluid can flow into fluid replenishment valve 1000 from secondary inlet port 24 but cannot flow into fluid replenishment valve 1000 from primary inlet port 22. Then, fluid flows out from outlet port 26, thereby defining the secondary flow path of fluid from secondary inlet port 24 to outlet port 26. In this case, fluid replenishment valve 1000 is in a third supply state, supplying fluid to, for example, a brake circuit via this secondary flow path. This supply state can correspond to the operating state of fluid replenishment valve 1000 when a backup operation is required to replenish fluid to the brake circuit via foot brake module in the event of a failure of the electronic pressure control module.

[0075] The fluid replenishment valve 1000 can switch between these supply states to meet fluid supply needs under different conditions.

[0076] According to some embodiments of this application, the valve mechanism 3 may include a valve core 32 and a valve element 34, wherein when the valve mechanism 3 moves between a first position and a second position, the primary inlet port 22 can be opened and closed by the valve core 32, and wherein the valve element 34 is configured to move relative to the valve core 32, such that the valve mechanism 3 can switch between the first configuration and the second configuration.

[0077] like Figures 2 to 6 As shown, the valve mechanism 3 may include a valve core 32 and a valve element 34. The operation and function of the valve mechanism 3 are realized through the movement and cooperation of the valve core 32 and the valve element 34. The valve core 32 may be generally elongated, such as rod-shaped. In the illustrated embodiment, the valve core 32 is shown extending generally along the X direction. During operation, the valve core 32 can move along the X direction, allowing the valve mechanism 3 to move between a first position and a second position. Figure 4 As shown, valve mechanism 3 is in the first position, and valve core 32 is correspondingly in the first position as well. When valve mechanism 3 moves from the first position to the second position, valve core 32 moves downward in the X direction as shown in the figure, causing valve mechanism 32 to also move downward in the X direction until valve mechanism 3 reaches the second position, at which point valve core 32 is also in the second position as well. Figure 5 and Figure 6 As shown.

[0078] In the illustrated embodiment, the primary inlet port 22 may have a primary opening 222 adjacent to the valve chamber 16, through which the primary inlet port 22 is in fluid communication with the valve chamber 16; that is, fluid can flow from the primary inlet port 22 into the valve chamber 16 via the primary opening 222. A first end 321 of the valve core 32, located in the X direction near the primary inlet port 22, may be configured to cooperate with the primary opening 222 to open and close the primary inlet port 22. When the valve mechanism 3 is in a first position, the first end 321 of the valve core 32 may separate from the primary opening 222 to allow communication between the primary inlet port 22 and the valve chamber 16, thereby opening the primary inlet port 22. When the valve mechanism 3 is in a second position, the first end 321 of the valve core 32 may close the primary opening 222 to prevent communication between the primary inlet port 22 and the valve chamber 16, thereby closing the primary inlet port 22.

[0079] The valve element 34 can be generally sleeve-shaped, and can also extend generally along the X direction, i.e., in the same direction as the valve core 32. The valve element 34 can be fitted onto the valve core 32 and can move along the valve core 32 in the X direction. During operation, the valve mechanism 3 can switch between a first configuration and a second configuration by the movement of the valve element 34 relative to the valve core 32. Figure 4 and Figure 5As shown, when valve element 34 contacts valve core 32 along the X direction, valve mechanism 3 is in the first configuration. When valve mechanism 3 changes from the first configuration to the second configuration, valve element 34 moves relative to valve core 32 in the X direction in the downward direction shown in the figure, causing valve element 34 to separate from valve core 32 along the X direction. At this time, valve mechanism 3 is in the second configuration, as shown in the figure. Figure 6 As shown.

[0080] In the illustrated embodiment, the secondary inlet port 24 may have a secondary opening 242 adjacent to the valve chamber 16. The secondary inlet port 24 is in fluid communication with the valve chamber 16 via this secondary opening 242, meaning that fluid can flow from the secondary inlet port 24 into the valve chamber 16 via the secondary opening 242. The second end 323 of the valve core 32, located in the X direction near the secondary inlet port 24, may be configured to engage with the valve element 34 without contacting the secondary opening 242, and a gap is formed between the second end 323 of the valve core 32 and the secondary opening 242. The valve element 34 may have a top wall 341 and a side wall 343. The top wall 341 is located in the Y direction within the gap between the second end 323 of the valve core 32 and the secondary opening 242, and the side wall 343 is configured to sealably contact the inner wall of the secondary opening 242 (e.g., through a sealing ring, such as...). Figure 7 As shown), this allows the valve element 34 to slide along the inner wall of the secondary opening 242 in the X direction. A valve opening 342 can be formed on the top wall 341, through which the second end 323 of the valve core 32 can extend. Figure 4 and Figure 5 As shown, when the valve mechanism 3 is in the first configuration, the second end 323 of the valve core 32 contacts and abuts against the top wall 341 of the valve element 34 to close the valve opening 342, preventing communication between the secondary inlet port 24 and the valve chamber 16, thereby closing the secondary inlet port 24 to prevent communication between the secondary inlet port 24 and the valve chamber 16. When the valve mechanism 3 changes from the first configuration to the second configuration, the valve element 34 moves in the X direction along the inner wall of the valve core 32 and the secondary opening 242 in the downward direction shown in the figure, causing the top wall 341 of the valve element 34 to separate from the second end 323 of the valve core 32. The second end 323 of the valve core 32 no longer closes the valve opening 342, and fluid can enter the valve chamber 16 from the secondary inlet port 24 through the valve opening 342, that is, opening the secondary inlet port 24 to allow communication between the secondary inlet port 24 and the valve chamber 16. At this time, the valve mechanism 3 is in the second configuration, as shown in the figure. Figure 6 As shown.

[0081] In the illustrated embodiment, the sidewall 343 of the valve element 34 can be further divided along the X direction into a first sidewall portion 343A and a second sidewall portion 343B. The first sidewall portion 343A can be in sealing contact with the inner wall of the secondary opening 242, allowing it to slide along the inner wall of the secondary opening 242 in the X direction. The second sidewall portion 343B can be in sealing contact with the inner wall of the valve chamber 16, allowing it to slide along the inner wall of the valve chamber 16 in the X direction. Dividing the sidewall 343 into the first sidewall portion 343A and the second sidewall portion 343B facilitates the switching between the first and second configurations of the valve element 34 under the action of fluid pressure on both sides along the X direction.

[0082] In this configuration, valve chamber 16 can be divided into a first chamber 162 and a second chamber 164 along the X direction. The first chamber 162 is adjacent to the secondary opening 242. The second sidewall portion 343B is in sealing contact with the inner wall of the first chamber 162 and can slide along the inner wall of the first chamber 162 in the X direction. The second chamber 164 is adjacent to the primary opening 222. The portion of the outlet port 26 adjacent to the second chamber 164 forms an outlet opening 262, through which the outlet port 26 is in fluid communication with valve chamber 16.

[0083] Through the cooperation of the valve core 32 and the valve element 34, the valve mechanism 3 can switch between the first structure and the second structure, and can move between the first position and the second position. It has a simple structure, compact layout, high reliability, and is easy and convenient to operate.

[0084] According to some embodiments of this application, the valve core 32 may have a primary opening and closing element 322. When the valve mechanism 3 is in a first position, the primary opening and closing element 322 can open the primary inlet port 22, and when the valve mechanism 3 is in a second position, the primary opening and closing element 322 can close the primary inlet port 22.

[0085] like Figure 3 As shown, a primary opening / closing element 322 may be provided at or near the first end 321 of the valve core 32. This primary opening / closing element 322 is configured to open and close the primary inlet port 22. When the valve mechanism 3 is in the first position, the primary opening / closing element 322 does not contact the primary opening 222, keeping the primary opening 222 unobstructed, allowing fluid to enter the valve chamber 16 from the primary inlet port 22 through the primary opening 222, i.e., opening the primary inlet port 22. Figure 4 As shown. When the valve mechanism 3 is in the second position, the primary opening / closing element 322 can seal against the edge of the primary opening 222 to close the primary opening 222, preventing fluid from entering the valve chamber 16 from the primary inlet port 22 through the primary opening 222, i.e., closing the primary inlet port 22. Figure 5 and Figure 6As shown.

[0086] According to some embodiments of this application, the primary opening and closing element 322 may be in the form of a sealing ring or have a conical sealing structure.

[0087] like Figures 2 to 7 As shown, the primary opening / closing element 322 is shown in the form of a sealing ring, which can be fitted onto or near the first end 321 of the valve core 32. When the valve mechanism 3 is in the second position, the sealing ring abuts against the edge of the primary opening 222, thereby engaging with the first end 321 of the valve core 32 to close the primary opening 222. The primary opening / closing element 322 can also be in the form of a conical sealing structure. When the valve mechanism 3 is in the second position, the conical surface of the conical sealing structure abuts against the edge of the primary opening 222, thereby engaging with the first end 321 of the valve core 32 to close the primary opening 222.

[0088] According to some embodiments of this application, a groove 326 may be formed on the valve core 32 to accommodate a primary opening / closing element 322. The primary opening / closing element 322 is configured to move in the groove 326 between an open position and a closed position. In the open position, the primary opening / closing element 322 allows communication between the primary inlet port 22 and the outlet port 26. In the closed position, the primary opening / closing element 322 prevents communication between the primary inlet port 22 and the outlet port 26.

[0089] In a further embodiment, such as Figure 3 As shown, a groove 326 can be formed on the valve core 32, and a primary opening / closing element 322, such as a sealing ring, can be fitted into this groove 326. (Refer to reference...) Figure 3A It shows Figure 3 An enlarged view of part 3A. The primary opening / closing element 322 can be configured to move up and down in the X direction within the groove 326, while the upper and lower ends of the groove 326 in the X direction can act as stops to prevent the primary opening / closing element 322 from dislodging from the groove 326. When the primary opening / closing element 322 moves up and down in the X direction within the groove 326, it moves between the open and closed positions. (Refer to reference...) Figure 3A and Figure 3B ,in Figure 3A A schematic diagram showing the primary switching element 322 in the closed position is shown. Figure 3B A schematic diagram of the primary switching element 322 in the open position is shown.

[0090] When the primary switching element 322 is in the closed position, such as Figure 3AAs shown, the primary opening / closing element 322 is located at the lower part of the groove 326 along the X direction and seals against the edge of the primary opening 222, thereby cooperating with the first end 321 of the valve core 32 to close the primary opening 222, so that fluid cannot enter the valve chamber from the primary inlet port 22 through the primary opening 222, that is, closing the primary inlet port 22 and preventing the communication between the primary inlet port 22 and the outlet port 26.

[0091] When the primary switching element 322 is in the open position, such as Figure 3A As shown, the primary opening and closing element 322 is located at the upper part of the groove 326 along the X direction, forming a certain gap with the edge of the primary opening 222. Fluid can enter the valve chamber from the primary inlet port 22 through the gap between the edge of the primary opening 222 and the primary opening and closing element 322, that is, the primary inlet port 22 is slightly opened to allow communication between the primary inlet port 22 and the outlet port 26 to a certain extent.

[0092] This movable configuration of the primary opening / closing element 322 can be used as a pre-operation for the valve mechanism 3 to switch from the second configuration to the first configuration and / or move from the second position to the first position. For example, in Figure 6 In the state shown, valve mechanism 3 is in the second configuration and in the second position. If valve mechanism 3 needs to switch from the second configuration to the first configuration, fluid can be guided to the primary inlet port 22 to apply pressure to the primary opening / closing element 322, causing the primary opening / closing element 322 to... Figure 3A The indicated closing position is moved to... Figure 3B The open position shown allows a portion of the fluid to enter the valve chamber 16 through the primary opening 222, increasing the pressure within the valve chamber 16. This, in turn, increases the pressure acting on the valve element 34 from the valve chamber 16 side, facilitating a faster valve mechanism 3 from... Figure 6 The second construction shown is converted to Figure 4 and Figure 5 The first configuration is shown. Similarly, if the valve mechanism 3 is to be moved from the second position to the first position, fluid can be directed to the primary inlet port 22 to apply pressure to the primary opening / closing element 322, causing the primary opening / closing element 322 to... Figure 3A The indicated closing position is moved to... Figure 3B The open position shown allows a portion of the fluid to enter the valve chamber 16 through the primary opening 222, increasing the pressure within the valve chamber 16. This, in turn, increases the pressure acting on the valve element 34 from the valve chamber 16 side, facilitating a faster valve mechanism 3 from... Figure 5 and Figure 6 The second position shown is moved to Figure 4 The first position shown.

[0093] Therefore, the movement of the primary opening and closing element 322 between the open and closed positions can facilitate the operation of the valve mechanism 3 in switching from the second configuration to the first configuration and / or moving from the second position to the first position.

[0094] According to some embodiments of this application, the valve core 32 may have a secondary opening and closing element 324 opposite to the primary opening and closing element 322 along the extending direction of the valve core 32. The valve element 34 may be arranged around the valve core 32. A valve opening 342 may be formed on the side of the valve element 34 near the secondary opening and closing element 324. When the valve mechanism 3 is in the first configuration, the secondary opening and closing element 324 may abut against the valve element 34 to close the valve opening 342, thereby closing the secondary inlet port 24. When the valve mechanism 3 is in the second configuration, the secondary opening and closing element 324 may be separated from the valve element 34 to open the secondary inlet port 24.

[0095] like Figure 3 As shown, a secondary opening / closing element 324 may be provided at or near the second end 323 of the valve core 32. This secondary opening / closing element 324 is configured to open and close the secondary inlet port 24. When the valve mechanism 3 is in the second configuration, the secondary opening / closing element 324 does not contact the valve opening 342, keeping the valve opening 342 unobstructed, allowing fluid to enter the valve chamber 16 from the secondary inlet port 24 via the valve opening 342, i.e., opening the secondary inlet port 24. Figure 6 As shown. When the valve mechanism 3 is in the first configuration, the secondary opening / closing element 324 can seal against the edge of the valve opening 342 to close the valve opening 342, preventing fluid from entering the valve chamber 16 from the secondary inlet port 24 through the valve opening 342, i.e., closing the secondary inlet port 24, as shown. Figure 4 and Figure 5 As shown.

[0096] According to some embodiments of this application, the secondary opening / closing element 324 may be in the form of a sealing ring or have a conical sealing structure.

[0097] like Figures 2 to 6 As shown, the secondary opening / closing element 324 is shown in the form of a conical sealing structure. When the valve mechanism 3 is in the first configuration, the conical surface of the conical sealing structure abuts against the edge of the valve opening 342, thereby cooperating with the second end 323 of the valve core 32 to close the valve opening 342. Figure 7 As shown, the secondary opening / closing element 324 is shown in the form of a sealing ring, which can be fitted onto or near the second end 323 of the valve core 32. When the valve mechanism 3 is in the first configuration, the sealing ring abuts against the edge of the valve opening 342, thereby engaging with the second end 323 of the valve core 32 to close the valve opening 342.

[0098] According to some embodiments of this application, the separation direction of the valve element 34 from the secondary opening and closing element 324 may be parallel to or coincide with the movement direction of the valve mechanism 3 moving between the first position and the second position.

[0099] like Figures 4 to 6 As shown, when the valve mechanism 3 transitions from the first configuration to the second configuration, the valve element 34 moves relative to the valve core 32 in the X direction, causing the top wall 341 of the valve element 34 to separate from the secondary opening / closing element 324 of the valve core 32, thereby opening the valve opening 342. At this time, the direction in which the top wall 341 of the valve element 34 separates from the secondary opening / closing element 324 of the valve core 32 is consistent with the X direction. When the valve mechanism 3 moves between the first and second positions, the valve core 32 carries the valve element 34 and moves it in the X direction. Therefore, in the illustrated embodiment, the separation direction of the valve element 34 from the secondary opening / closing element 324 can coincide with the movement direction of the valve mechanism 3 moving between the first and second positions. Those skilled in the art will understand that, based on the actual structure of the fluid replenishment valve 1000, the above separation direction and movement direction can be designed to be parallel to each other or at an angle.

[0100] Having the separation direction and the movement direction parallel or coincident with each other is beneficial to the consistency of the movement of the components of valve mechanism 3 and avoids interference between components.

[0101] According to some embodiments of this application, the valve core 32 may include a first section 32A and a second section 32B connected to each other. The primary opening and closing element 322 may be disposed on the first section 32A, and the secondary opening and closing element 324 may be disposed on the second section 32B.

[0102] exist Figures 2 to 6 In the illustrated embodiment, the main body of the valve core 32 is formed as a single elongated structure. Figure 7 In the illustrated embodiment, the main body of the valve core 32 consists of two segments: a first segment 32A and a second segment 32B. The first segment 32A may be the upper segment of the valve core 32 along the X-direction, and the second segment 32B may be the lower segment of the valve core 32 along the X-direction. The first segment 32A and the second segment 32B can be connected to each other to form the main body of the valve core 32, for example, by means of a detachable or non-detachable connection. The first segment 32A may include a mounting pin, and the second segment 32B may include a corresponding mounting groove. The first segment 32A and the second segment 32B can be connected to each other through the mutual engagement of the mounting pin and the mounting groove, such as an interference fit. Other engagement methods can also be used, such as threaded connections, snap-fit ​​connections, and tenon-and-mortise connections.

[0103] Disassembling the valve core 32 into the first section 32A and the second section 32B facilitates the assembly and installation of the valve mechanism 3, which in turn facilitates the assembly and operation of the fluid replenishment valve 1000.

[0104] According to some embodiments of this application, the valve mechanism 3 may be provided with a biasing element 36, which is configured to bias the valve mechanism 3 toward a first configuration. Specifically, a first end 362 of the biasing element 36 may be connected to the valve core 32 at or near the primary opening / closing element 322, and a second end 364 of the biasing element 36 may be connected to the valve element 34 near the valve opening 342.

[0105] As shown in the figure, a biasing element 36 is provided between the valve core 32 and the valve element 34. In the illustrated embodiment, the biasing element 36 is shown in the form of a helical spring, but it should be understood that the biasing element 36 can be any suitable elastic element, such as a leaf spring. The two ends of the biasing element 36 are connected to the valve core 32 and the valve element 34 respectively, so as to generate a biasing effect between the valve core 32 and the valve element 34.

[0106] As shown in the figure, the first end 362 of the biasing element 36 is connected to the lower part of the valve core 32 along the X direction, located at or near the primary opening / closing element 322. The valve core 32 may be formed with a seat 328, on which the first end 362 of the biasing element 36 can abut. The seat 328 may be a separate component surrounding the valve core 32, for example... Figures 2 to 6 The embodiment shown can also be a flange integrally formed on the valve core 32, for example, Figure 7 The embodiment shown. The second end 364 of the biasing element 36 can be connected to the upper part of the valve element 34 along the X direction, near the valve opening 342. The second end 364 of the biasing element 36 can abut against the top wall 341 of the valve element 34 from one side of the valve chamber 16. In this way, the biasing element 36 is arranged around the valve core 32 along the X direction. When the valve element 34 moves relative to the valve core 32 along the X direction, the biasing element 36 elastically deforms accordingly in the X direction, generating a biasing force, so that the valve element 34 is biased to contact the secondary opening and closing element 324, that is, biasing the valve mechanism 3 towards the first configuration.

[0107] According to some embodiments of this application, the switching of the valve mechanism 3 between the first configuration and the second configuration and the movement between the first position and the second position can be performed separately.

[0108] The switching between the first and second configurations of valve mechanism 3 does not need to occur simultaneously with the movement between the first and second positions; the two can be performed alternately. For example... Figure 4 As shown, during normal operation, valve mechanism 3 is in the first configuration and in the first position. When, for example, the electronic pressure control module malfunctions and a backup operation needs to be initiated, valve mechanism 3 first moves from the first position to the second position, as shown. Figure 5The state shown is then changed, and the valve mechanism 3 transitions from the first configuration to the second configuration, as shown. Figure 6 The state shown.

[0109] This can be achieved by rationally designing the pressure-bearing areas of valve element 34 and valve core 32 at the secondary inlet port 24, the pressure-bearing area of ​​valve core 32 at the primary inlet port 22, the pressure-bearing area of ​​valve element 34 in the valve chamber 16, and the parameters of the biasing element 36, so that before the valve mechanism 3 moves from the first position to the second position, the pressure on valve element 34 at the primary inlet port 24 is insufficient to cause valve element 34 to move downward relative to valve core 32, i.e., the valve mechanism 3 remains in the first configuration. After the valve mechanism 3 reaches the second position, as the pressure increases, it overcomes the fluid in the valve chamber 16 and the force exerted on valve element 34 by the biasing element 36, causing valve element 34 to move downward relative to valve core 32 in the X direction, thus changing the valve mechanism 3 from the first configuration to the second configuration.

[0110] Similarly, when the fluid replenishment valve needs to be supplied from... Figure 6 The status shown has switched to Figure 4 In the state shown, the valve mechanism 3 alternates between the first and second configurations and between the first and second positions in a sequential manner. That is, in Figure 6 In the state shown, valve mechanism 3 is in the second configuration and in the second position. When, for example, the malfunction of the electronic pressure control module disappears and normal operation resumes, valve mechanism 3 first changes from the second configuration to the first configuration, as shown. Figure 5 The valve mechanism 3 then moves from the second position to the first position, as shown in the diagram. Figure 4 The state is shown. On one hand, when fluid is supplied from the secondary inlet port 24, the valve chamber 16 is filled with fluid. After reaching a certain pressure, this pressure is sufficient to push the valve element 34 upward relative to the valve core 32 in the X direction, causing the valve opening 342 to be closed. That is, when the valve mechanism 3 is in the second position, the valve mechanism 3 changes from the second configuration to the first configuration. At this time, the electronic pressure control module resumes normal operation, and fluid enters from the primary inlet port 22. The resulting pressure causes the valve mechanism 3 to move from the second position to the first position, restoring the state as shown. Figure 4 The first supply status is shown.

[0111] The valve mechanism 3 separates the switching between the first and second configurations from the movement between the first and second positions, which can avoid the disruption of fluid flow and ensure the normal operation of the fluid replenishment valve 1000.

[0112] According to this application, the fluid replenishment valve 100 achieves the switching of the braking system between normal operation and standby operation through the valve mechanism 3 switching between the first and second configurations and moving between the first and second positions, with a structure that is simple to assemble and manufacture and easy to install. It eliminates the need for two circuits corresponding to normal operation and standby operation respectively, simplifies the overall structure, reduces the overall cost, and achieves a reliable braking effect.

[0113] Example 1

[0114] like Figures 3 to 6 As shown, it illustrates Example 1 of a fluid replenishment valve 1000.

[0115] As described above, the fluid replenishment valve 1000 includes a valve body 1 and a valve mechanism 3. The valve body 1 includes a primary inlet port 22, a secondary inlet port 24, and an outlet port 26, forming a valve chamber 16 between the primary inlet port 22, the secondary inlet port 24, and the outlet port 26. The valve mechanism 3 is arranged in the valve chamber 16 and includes a valve core 32, a valve element 34, and a biasing element 36 disposed between the valve core 32 and the valve element 34.

[0116] The primary opening / closing element 322 is located near the first end 321 of the valve core 32, which extends into the primary opening 222 of the primary inlet port 22. The primary opening / closing element 322 is in the form of a sealing ring, fitted onto the valve core 32, and configured to cooperate with the primary opening 222. The secondary opening / closing element 324 is located at the second end 323 of the valve core 32 and is a conical sealing structure.

[0117] Valve element 34 includes a top wall 341 and a side wall 343. The side wall 343 includes a first side wall portion 343A and a second side wall portion 343B. The top wall 341 defines a valve opening 342 at a generally central location. Valve element 34 is disposed around a valve core 32, a second end 323 of which extends through the valve opening 342. A secondary opening / closing element 324 is configured to cooperate with the valve opening 342. The first side wall portion 343A sealably contacts the inner wall of the secondary opening 342 and is slidable along the inner wall of the secondary opening 342 in the X direction. The second side wall portion 343B sealably contacts the inner wall of the valve chamber 16 and is slidable along the inner wall of the valve chamber 16 in the X direction.

[0118] exist Figure 4 In the first supply state shown, the electronic pressure control module is not faulty and the braking system operates normally. At this time, the braking system always supplies fluid from the primary inlet port 22 through the electronic pressure control module.

[0119] When braking begins, the primary inlet port 22 is opened under the pressure of the fluid supplied from the electronic pressure control module, placing the valve mechanism 3 in the first position. After opening, fluid enters the valve chamber 16 from the primary inlet port 22 and reaches the outlet port 26, at which point the valve mechanism 3 can remain in the first position.

[0120] In this situation, valve mechanism 3 always remains in the first position, and the electronic pressure control module supplies fluid to the braking circuit through the fluid replenishment valve and the primary flow path from the primary inlet port 22 to the outlet port 26.

[0121] When the electronic pressure control module malfunctions, no fluid is supplied to the primary inlet port 22. When the brake pedal is depressed, fluid from the foot brake module begins to flow to the secondary inlet port 24. In this situation, the force of the fluid at the secondary inlet port 24 on the valve mechanism 3 causes the valve mechanism 3 to move from the first position to the second position, closing the primary inlet port 22. At this time, the force of the fluid at the secondary inlet port 24 on the valve element 34 is insufficient to overcome the forces of the valve chamber 16 and the biasing element 36, causing the valve mechanism 3 to be in the first configuration, and the fluid replenishment valve 1000 to be in the second configuration. Figure 5 The second supply state shown is that both the primary inlet port 22 and the secondary inlet port 24 are closed.

[0122] As the brake pedal is further pressed down, the pressure of the fluid from the foot brake module increases, causing the pressure of the fluid at the secondary inlet port 24 to increase until the force of the fluid at the secondary inlet port 24 on the valve element 34 overcomes the forces of the valve chamber 16 and the biasing element 36, causing the valve element 34 to move downward relative to the valve core 32 in the X direction, changing from the first configuration to the second configuration. In this case, the fluid replenishment valve 1000 is in... Figure 6 The third supply state shown supplies fluid to the braking circuit via a secondary flow path from the secondary inlet port 24 to the outlet port 26.

[0123] When valve mechanism 3 is in the second configuration, fluid flows from secondary inlet port 24 into valve chamber 16, increasing the pressure within the valve chamber. Once the pressure within the valve chamber increases to the point where the force exerted by the fluid at secondary inlet port 24 on valve element 34 is insufficient to overcome the forces of valve chamber 16 and biasing element 36, valve element 34 is pushed back along the X direction, causing valve mechanism 3 to revert to the first configuration, i.e., the fluid replenishment valve 1000 returns to its original configuration. Figure 5 The second supply state is shown. This backup braking operation can be repeatedly performed during braking in the event of a failure of the electronic pressure control module.

[0124] When the electronic pressure control module malfunction is resolved and normal operation resumes, the fluid pressure at the primary inlet port 22 increases to a value greater than zero. At this time, the valve mechanism 3 can move from the second position to the first position. As described above, when the valve mechanism 3 is in the first position, the pressure in the valve chamber 16 is sufficient to keep the valve mechanism 3 in the first configuration. Therefore, the fluid replenishment valve 1000 remains in the first configuration. Figure 4 The first supply status is shown.

[0125] Variation of Example 1

[0126] like Figure 3A and Figure 3B As shown, based on Example 1 above, a groove 326 is formed on the valve core 32, and a primary opening / closing element 322, for example in the form of a sealing ring, is fitted into this groove 326. The primary opening / closing element 322 can be configured to move up and down in the X direction within the groove 326, while the upper and lower ends of the groove 326 in the X direction can serve as stops to prevent the primary opening / closing element 322 from dislodging from the groove 326. When the primary opening / closing element 322 moves up and down in the X direction within the groove 326, it moves between the open position and the closed position. Figure 3A A schematic diagram showing the primary switching element 322 in the closed position is shown. Figure 3B A schematic diagram of the primary switching element 322 in the open position is shown.

[0127] As described above, this movable configuration of the primary opening / closing element 322 can be used as a pre-operation for the valve mechanism 3 to switch from the second configuration to the first configuration and / or move from the second position to the first position. For example, in Figure 6 In the state shown, valve mechanism 3 is in the second configuration and in the second position. At this time, if the electronic pressure control module malfunction is eliminated and normal operation is restored, the fluid pressure at the primary inlet port 22 increases to a value greater than zero, applying pressure to the primary opening and closing element 322, causing the primary opening and closing element 322 to... Figure 3A The indicated closing position is moved to... Figure 3B The open position shown allows a portion of the fluid to enter the valve chamber 16 through the primary opening 222, increasing the pressure within the valve chamber 16. This, in turn, increases the pressure acting on the valve element 34 from the valve chamber 16 side, facilitating a faster valve mechanism 3 from... Figure 6 The second construction shown is converted to Figure 4 and Figure 5 The first construction shown and from Figure 5 and Figure 6 The second position shown is moved to Figure 4 The first position shown.

[0128] Example 2

[0129] like Figure 7As shown, it illustrates Example 2 of the fluid replenishment valve 1000.

[0130] For the sake of brevity, only the differences from Example 1 will be described below. In Example 2, the top cover 14 is bolted to the main body 12 to form the valve body 1. The valve core 32 is not a one-piece component, but consists of a first section 32A and a second section 32B, which are connected together by threads. The secondary opening and closing element 324 of the valve core 32 is also in the form of a sealing ring. When the valve mechanism 3 is in the first configuration, the secondary opening and closing element 324 abuts against the edge of the valve opening 342 to close the valve opening 342. In Example 1, the abutment seat 328 is fitted (sleeved) onto the valve core 32 as a separate component, while in Example 2, the abutment seat 328 is integrally formed on the first section 32A, and is formed as a flange protruding outward in the radial direction.

[0131] While exemplary embodiments of this application have been described, those skilled in the art will understand that various changes and modifications can be made to the exemplary embodiments of this application without departing from the spirit and scope thereof. Therefore, all changes and modifications are included within the scope of protection of this application as defined by the claims. This application is defined by the appended claims, and equivalents of those claims are also included.

Claims

1. A fluid replenishment valve (1000) for use in a vehicle braking system, characterized in that, The fluid replenishment valve (1000) includes: Valve body (1), which defines a primary inlet port (22), a secondary inlet port (24) and an outlet port (26) that are communicative with each other. Valve mechanism (3), which is disposed within the valve body (1) and configured to open and close the primary inlet port (22) and the secondary inlet port (24). The valve mechanism (3) is configured to move between a first position where the primary inlet port (22) is open and a second position where the primary inlet port (22) is closed; and The valve mechanism (3) is configured to switch between a first configuration that closes the secondary inlet port (24) and a second configuration that opens the secondary inlet port (24).

2. The fluid replenishment valve (1000) according to claim 1, characterized in that, When the valve mechanism (3) is in the first position with the first configuration, the fluid supply valve (1000) is in a first supply state that defines a primary flow path of fluid from the primary inlet port (22) to the outlet port (26); When the valve mechanism (3) is in the second position with the first configuration, the fluid supply valve (1000) is in a second supply state in which the primary inlet port (22), the secondary inlet port (24) and the outlet port (26) are not connected to each other; as well as When the valve mechanism (3) is in the second position with the second configuration, the fluid supply valve (1000) is in a third supply state that defines a secondary flow path of fluid from the secondary inlet port (24) to the outlet port (26).

3. The fluid replenishment valve (1000) according to claim 1 or 2, characterized in that, The valve mechanism (3) includes a valve core (32) and a valve element (34), wherein the primary inlet port (22) is opened and closed by the valve core (32) when the valve mechanism (3) moves between the first position and the second position, and wherein the valve element (34) is configured to move relative to the valve core (32) such that the valve mechanism (3) switches between the first configuration and the second configuration.

4. The fluid replenishment valve (1000) according to claim 3, characterized in that, The valve core (32) is provided with a primary opening and closing element (322). When the valve mechanism (3) is in the first position, the primary opening and closing element (322) opens the primary inlet port (22). When the valve mechanism (3) is in the second position, the primary opening and closing element (322) can close the primary inlet port (22).

5. The fluid replenishment valve (1000) according to claim 4, characterized in that, The primary opening and closing element (322) is in the form of a sealing ring or has a conical sealing structure.

6. The fluid replenishment valve (1000) according to claim 4 or 5, characterized in that, The valve core (32) has a groove (326) formed to accommodate the primary opening and closing element (322), the primary opening and closing element (322) being configured to move in the groove (326) between an open position and a closed position. In the open position, the primary opening and closing element (322) allows communication between the primary inlet port (22) and the outlet port (26), and in the closed position, the primary opening and closing element (322) prevents communication between the primary inlet port (22) and the outlet port (26).

7. The fluid replenishment valve (1000) according to any one of claims 4 to 6, characterized in that, The valve core (32) has a secondary opening and closing element (324) opposite to the primary opening and closing element (322) along the extending direction of the valve core (32). The valve element (34) is arranged around the valve core (32). A valve opening (342) is formed on the side of the valve element (34) near the secondary opening and closing element (324). When the valve mechanism (3) is in the first configuration, the secondary opening and closing element (324) abuts against the valve element (34) and closes the valve opening (342) to close the secondary inlet port (24). When the valve mechanism (3) is in the second configuration, the secondary opening and closing element (324) separates from the valve element (34) to open the secondary inlet port (24).

8. The fluid replenishment valve (1000) according to claim 7, characterized in that, The secondary opening and closing element (324) is in the form of a sealing ring or has a conical sealing structure.

9. The fluid replenishment valve (1000) according to claim 7, characterized in that, The separation direction of the valve element (34) from the secondary opening and closing element (324) is parallel or coincident with the movement direction of the valve mechanism (3) between the first position and the second position.

10. The fluid replenishment valve (1000) according to any one of claims 4 to 9, characterized in that, The valve core (32) includes a first section (32A) and a second section (32B) connected to each other. The primary opening and closing element (322) is disposed on the first section (32A), and the secondary opening and closing element (324) is disposed on the second section (32B).

11. The fluid replenishment valve (1000) according to any one of claims 1 to 10, characterized in that, The valve mechanism (3) is provided with a biasing element (36) configured to bias the valve mechanism (3) toward the first configuration.

12. The fluid replenishment valve (1000) according to any one of claims 7 to 9, characterized in that, The valve mechanism (3) is provided with a biasing element (36), the first end (362) of the biasing element (36) is connected to the valve core (32) at or near the primary opening and closing element (322), and the second end (364) of the biasing element (36) is connected to the valve element (34) near the valve opening (342).

13. The fluid replenishment valve (1000) according to any one of claims 1 to 12, characterized in that, The valve mechanism (3) switches between the first configuration and the second configuration separately from the movement between the first position and the second position.

Images