Valve element assembly, electromagnetic valve, intake and exhaust valve, air suspension system and vehicle

Abstract

The valve element assembly comprises a valve element and a valve shell, and the valve shell is provided with a first opening and a second opening; the valve element is movably arranged on the valve shell and provided with a first pressed surface and a second pressed surface, fluid pressure acts on the valve element in the normal direction of the first pressed surface and the normal direction of the second pressed surface, and the fluid pressure acting on the first pressed surface and the fluid pressure acting on the second pressed surface are opposite in direction. When the valve element is in a first state, the first opening communicates with the second opening; when the valve element is in the second state, the communicating channel between the first opening and the second opening is closed, the pressure directions of fluid acting on the first pressed surface and the second pressed surface are opposite, external force needed for driving the valve element can be reduced, and then energy consumption is reduced to a certain degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronics, and in particular to a valve core assembly, an electromagnetic valve, an air intake and exhaust valve, an air suspension system and a vehicle. BACKGROUND

[0002] With the continuous development of science and technology, air suspension systems have been widely used in automobiles. The system adjusts the stiffness and height of the vehicle suspension by adjusting the air pressure in the air bag, thereby improving the comfort and stability of the vehicle.

[0003] Currently, the electromagnetic valve usually cooperates with the static iron core through the electromagnetic coil to use magnetic force to attract the moving iron core, and relies on the movement of the moving iron core to realize the on-off control of the air path.

[0004] However, in some cases, the electromagnetic coil often needs to pass a large current to provide enough magnetic force to drive the moving iron core to move, which may cause the overall power consumption of the system to be high, which is not conducive to energy efficiency control. Inventive content

[0005] The valve core assembly, the electromagnetic valve, the air intake and exhaust valve, the air suspension system and the vehicle provided by the embodiments of the present application can reduce the driving force required when driving the moving iron core, thereby reducing the current required by the electromagnetic coil to a certain extent, thereby at least partially solving the above technical problems.

[0006] In order to achieve the above purpose, according to the first aspect of the present application, a valve core assembly is provided, comprising:

[0007] a valve shell having a first opening and a second opening; and

[0008] a valve core movably arranged in the valve shell and configured to switch between a first state and a second state under the action of an external force, wherein the valve core has a first pressure receiving surface and a second pressure receiving surface in the moving direction of the valve core, fluid pressure acts on the valve core along the normal direction of the first pressure receiving surface and the second pressure receiving surface respectively, and the directions of the fluid pressure acting on the first pressure receiving surface and the second pressure receiving surface are opposite;

[0009] wherein the first opening and the second opening are in communication when the valve core is in the first state; and the valve core closes the communication passage between the first opening and the second opening when the valve core is in the second state, so as to block the first opening and the second opening.

[0010] In some embodiments, a balance cavity is formed between the side of the valve core away from the first opening and the valve shell, and the balance cavity is configured to communicate with a pressure source.

[0011] The first pressure receiving surface is an end face of the valve core located in the balance cavity.

[0012] The second pressure receiving surface is an end surface of the valve core facing the first opening.

[0013] In some embodiments, the balance cavity is in communication with the first opening through a hole, so that the pressure at the first opening serves as a pressure source for the balance cavity.

[0014] In some embodiments, the area difference between the first pressure receiving surface and the second pressure receiving surface is equal to zero;

[0015] or, the area difference between the first pressure receiving surface and the second pressure receiving surface is greater than zero;

[0016] or, the area difference between the first pressure receiving surface and the second pressure receiving surface is less than zero.

[0017] In some embodiments, the valve housing is provided with a movable cavity, the valve core is movably arranged in the movable cavity, and the valve housing is provided with a stop portion in the movable cavity;

[0018] When the valve core is in the second state, the valve core and the stop portion are in sealing cooperation to block the communication passage between the first opening and the second opening; and / or,

[0019] When the valve core is in the first state, the valve core and the stop portion are out of sealing cooperation to make the first opening and the second opening communicate.

[0020] In some embodiments, when the valve core is in the second state, a first sealing band and a second sealing band are formed between the valve core and the valve housing, and the second opening is located between the first sealing band and the second sealing band.

[0021] In some embodiments, the valve core comprises a first sealing portion and a second sealing portion;

[0022] When the valve core is in the second state, the first sealing portion and the valve housing form the first sealing band, and the second sealing portion and the valve housing form the second sealing band; and / or,

[0023] When the valve core is in the first state, the first sealing portion and the second sealing portion are both out of sealing cooperation with the valve housing.

[0024] In some embodiments, the stop portion of the valve housing comprises a first boss and a second boss;

[0025] When the valve core is in the second state, the valve core cooperates with the first boss and the second boss respectively to form the first sealing band and the second sealing band; and / or,

[0026] The valve core is in the first state, and the valve core is in sealing cooperation with the first boss and the second boss, respectively.

[0027] In some embodiments, the first sealing part of the valve core is configured to form the first sealing band in cooperation with the first boss; and / or,

[0028] The second sealing part of the valve core is configured to form the second sealing band in cooperation with the second boss.

[0029] In some embodiments, at least one of the first boss and the first sealing part is provided with a first sealing member;

[0030] And / or, at least one of the second boss and the second sealing part is provided with a second sealing member.

[0031] In some embodiments, the valve core assembly further comprises an elastic member configured to restore the valve core to an initial position corresponding to the position of the valve core in the first state or the second state.

[0032] In some embodiments, the valve core assembly comprises a static core and a dynamic core connected with the valve core, and the elastic member is connected with the dynamic core to elastically reset the dynamic core;

[0033] The dynamic core is configured to move relative to the static core under the action of magnetic force to drive the valve core to switch between the first state and the second state.

[0034] In some embodiments, the size of the first opening is 5-12 mm.

[0035] According to a second aspect of the present application, an electromagnetic valve is provided, comprising the valve core assembly of the above technical solution.

[0036] In some embodiments, the electromagnetic valve comprises a coil assembly arranged on the outer periphery of the dynamic core and / or the static core of the valve core assembly, configured to generate electromagnetic force when energized, so that the dynamic core moves relative to the static core to drive the valve core to switch between the first state and the second state.

[0037] According to a third aspect of the present application, an intake and exhaust valve is provided, comprising the valve core assembly of the above technical solution, or the electromagnetic valve of the above technical solution.

[0038] In some embodiments, a body having a cavity is further provided, and the body is provided with a first through port and a third through port in communication with the cavity;

[0039] The valve core assembly is disposed on the body and is used to control the opening and closing of the first port, and the third port is used to connect to external devices.

[0040] In some embodiments, the body is provided with a second port communicating with the chamber, and a control valve is provided at the second port. The control valve is used to control the second port to be open in one direction so that when the pressure in the chamber exceeds a set pressure, fluid is discharged from the chamber through the second port.

[0041] In some embodiments, the control valve includes a check valve.

[0042] In some embodiments, the second port is provided with a sensor for detecting at least one of the pressure, flow rate, and composition of the fluid flowing through the second port.

[0043] According to a fourth aspect of this application, an air suspension system is also provided, including the valve core assembly described in the above-described technical solutions, or the solenoid valve described in the above-described technical solutions, or the intake and exhaust valve described in the above-described technical solutions.

[0044] In some embodiments, the air suspension system includes an intake / exhaust valve and a pressure device connected to a third port of the intake / exhaust valve.

[0045] In some embodiments, the pressure device includes an air compressor.

[0046] In some embodiments, a gas storage device is also included, which is connected to the second port of the inlet and outlet valve.

[0047] According to a fifth aspect of this application, a vehicle is also provided, including the valve core assembly described in the above-described technical solutions, or the solenoid valve described in the above-described technical solutions, or the intake and exhaust valves described in the above-described technical solutions, or the air suspension system described in the above-described technical solutions.

[0048] The valve core assembly of this application embodiment, by providing a first pressure-receiving surface and a second pressure-receiving surface on the valve core, allows fluid pressure to act on these two surfaces in opposite directions, thereby reducing the external driving force required to actuate the valve core. Specifically, the fluid pressures on the first pressure-receiving surface and the second pressure-receiving surface counteract or cancel each other out, which to some extent reduces the need for external force.

[0049] The reduction in external driving force directly leads to a reduction in the electromagnetic force required to drive the valve core. Since electromagnetic force is proportional to current, the reduction in electromagnetic force lowers the current demand, thereby reducing the energy consumption of the electromagnetic coil, improving the system's energy efficiency, and avoiding overheating and energy waste caused by excessive current.

[0050] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0053] Figure 1 This is a cross-sectional view of the valve core assembly provided in the exemplary embodiment of this disclosure in the first state;

[0054] Figure 2 This is a cross-sectional view of the valve core assembly provided in the exemplary embodiment of this disclosure when it is in the second state;

[0055] Figure 3 This is a cross-sectional view of the valve core provided in an exemplary embodiment of this disclosure;

[0056] Figure 4 This is a schematic diagram of the structure of the intake and exhaust valve provided in an exemplary embodiment of this disclosure;

[0057] Figure 5 This is a cross-sectional view of the intake and exhaust valve provided in an exemplary embodiment of this disclosure;

[0058] Figure 6 This is a cross-sectional view of the intake and exhaust valve provided in an exemplary embodiment of this disclosure;

[0059] Figure 7 This is an exploded cross-sectional view of the intake and exhaust valve provided in an exemplary embodiment of this disclosure;

[0060] Figure 8 This is a cross-sectional view of a coil assembly provided in an exemplary embodiment of this disclosure;

[0061] Figure 9 This is a schematic diagram of the structure of the coil assembly provided in an exemplary embodiment of this disclosure.

[0062] Explanation of reference numerals in the attached figures:

[0063] 10. Solenoid valve; 101. Coil assembly; 11. Body; 11a. Chamber; 11b. First port; 11c. Second port; 11d. Third port; 11e. Control valve; 11f. Sensor; 100. Valve housing; 110. First opening; 120. Second opening; 130. Balance chamber; 140. Movable chamber; 150. Stop; 151. First boss; 152. Second boss; 15 2a. Second sealing element; 200. Valve core; 210. First pressure-bearing surface; 220. Second pressure-bearing surface; 230. First sealing part; 231. First sealing element; 240. Second sealing part; 250. First sealing strip; 260. Second sealing strip; 270. Channel; 300. Elastic element; 400. Stationary iron core; 500. Moving iron core; 510. Connecting rod; 520. Iron core cover; 600. Valve seat. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0065] According to the first aspect of this application, referring to Figures 1 to 4 This disclosure provides a valve core assembly for use in a solenoid valve 10. Exemplarily, the solenoid valve 10 includes a coil assembly 101 (see reference 101). Figure 8 and Figure 9 When the coil assembly 101 is energized, it generates electromagnetic force, thereby driving the movement of the valve core assembly and thus connecting or blocking the first opening 110 and the second opening 120. In this state, the movement of the valve core 200 can control the flow of fluid and effectively regulate the opening and closing of the pipeline.

[0066] In this embodiment, the term "pipeline" refers to the actual pipe structure whose on / off state needs to be controlled. This pipe structure can be used to transmit gas or liquid in a system, such as for air connection in an air suspension system. When the valve core assembly described in this embodiment is installed in the pipeline, the on / off state of the pipeline can be controlled by the movement of the valve core in different states. Specifically, when the valve core 200 is in the first state, a fluid connection is established between the first opening 110 and the second opening 120, allowing fluid to flow along the pipeline direction; while when the valve core is in the second state, the valve core closes the connection between the first opening 110 and the second opening 120, interrupting the pipeline flow. Through the above structural arrangement, dynamic adjustment of the fluid flow state in the pipeline can be achieved.

[0067] It is understood that, in addition to electromagnetic actuation, the valve core assembly of this application can also be applied to other types of valves, such as manual valves or valves driven by electric actuators (such as electric motors). In these cases, although the actuation method of the valve core assembly differs, its basic working principle and effect remain similar.

[0068] Reference Figure 1 , Figure 2 The valve core assembly includes a valve housing 100 and a valve core 200. The valve housing 100 has a first opening 110 and a second opening 120. It is understood that a pipeline requiring control can be connected to the first opening 110 and the second opening 120, allowing the valve core 200 to control the flow of the pipeline. For example, the first opening 110 can be connected to one pipeline, and the second opening 120 can be connected to another pipeline. Through the function of the valve core assembly, the connection between these two pipelines can be controlled, thereby regulating the flow state of the fluid. In some embodiments, the first opening 110 is located at the end of the valve housing 100, and the second opening 120 is located on the side wall of the valve housing 100. With this structural design, the first opening 110 and the second opening 120 can be connected to pipelines in different directions, facilitating the control of the fluid flow path.

[0069] Specifically, the first opening 110 is located at the end of the valve housing 100 and can be connected to a pipeline, while the second opening 120 is located on the side wall of the valve housing 100 and can be connected to another pipeline. The movement of the valve core assembly can control the connection or closure of these two openings, thereby regulating the fluid flow path and achieving precise control of the fluid flow state.

[0070] The advantage of this structural design is that the opening configuration at the ends and sidewalls can be more flexibly adapted to different fluid flow requirements, and provides a more compact and efficient valve core assembly design.

[0071] Reference Figure 1 , Figure 2 In some embodiments, the valve core 200 is movably disposed on the valve housing 100. The valve core 200 is configured to switch between a first state and a second state under the action of an external force. When the valve core 200 is in the first state, the first opening 110 and the second opening 120 are connected. When the valve core 200 is in the second state, the communication channel between the first opening 110 and the second opening 120 is closed, thereby blocking the connection between the first opening 110 and the second opening 120. By switching the valve core assembly between the first state and the second state, the connection between the first opening 110 and the second opening 120 can be effectively controlled, thereby achieving precise control of the fluid passage connected to the first opening 110 and the second opening 120, and thus achieving open or closed control of the pipeline. This design allows the valve core 200 to flexibly adjust the fluid flow state to meet different flow rate or fluid control requirements.

[0072] In this embodiment, the "connecting channel" refers to the channel used to connect the first opening 110 and the second opening 120. When the first opening 110 and the second opening 120 are in a connected state, it indicates that a fluid communication channel exists between them. By controlling the on / off state of this channel, the first opening 110 and the second opening 120 can be connected or disconnected, thereby achieving the purpose of regulating the fluid flow state. This embodiment does not limit the specific structure and path form of the connecting channel; it can be set as a straight, curved, or branched channel according to actual application requirements.

[0073] In some embodiments, the valve core 200 has a first pressure-receiving surface 210 and a second pressure-receiving surface 220 in the direction of movement of the valve core 200. Fluid pressure acts on the valve core 200 along the normal directions of the first pressure-receiving surface 210 and the second pressure-receiving surface 220, respectively, and the directions of the fluid pressure acting on the first pressure-receiving surface 210 and the second pressure-receiving surface 220 are opposite. Specifically, the directions of the fluid pressure acting on the first pressure-receiving surface 210 and the second pressure-receiving surface 220 are opposite, that is, the direction of the fluid pressure on the first pressure-receiving surface 210 is opposite to the direction of the fluid pressure on the second pressure-receiving surface 220. This design causes the pressures between the two surfaces to counteract or cancel each other out, thereby effectively reducing the driving force required to move the valve core 200 relative to the valve housing 100.

[0074] It is understood that the first pressure-bearing surface 210 and the second pressure-bearing surface 220 mentioned in this application can refer to the actual physical surface of the valve core 200, or to the projected surface of the valve core 200 along the fluid pressure direction. When the surface of the valve core 200 has curvature changes, uneven structures, or other irregular shapes, for ease of description and analysis, the projected surface of the valve core 200 in the fluid pressure direction can be regarded as the first pressure-bearing surface 210 and the second pressure-bearing surface 220. This design can more accurately reflect the area of ​​action of the fluid pressure and effectively analyze and optimize the mechanical behavior of the valve core 200 under working conditions.

[0075] Specifically, the first pressure-bearing surface 210 and the second pressure-bearing surface 220 are respectively subjected to fluid pressure, and the directions of the forces are opposite. Since the pressures on the two pressure-bearing surfaces are mutually antagonistic, a resultant force is formed. The magnitude and direction of this resultant force depend on the area difference between the two surfaces, thereby determining the direction and extent of movement of the valve core 200.

[0076] When the pressure-bearing surface areas of the two are equal, the forces exerted by the fluid pressures cancel each other out, and the valve core 200 remains stationary or in equilibrium. This design can keep the valve core 200 stable, avoid unnecessary movement, and is suitable for certain operating conditions where the valve core 200 needs to be stationary.

[0077] If there is a difference in the area of ​​the pressure-bearing surfaces of the two components, the larger pressure-bearing surface will bear greater fluid pressure, thereby generating a driving force that pushes the valve core 200 to move in a set direction. At this time, the fluid pressure can assist the movement of the valve core 200 or help maintain the valve core 200 in a certain predetermined position.

[0078] By rationally designing and adjusting the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220, the response speed and stability of the valve core 200 can be precisely controlled. An appropriate area difference can improve the response speed of the valve core 200, reduce inertial hysteresis, and enhance the stability and reliability of the valve core 200 under different operating conditions.

[0079] Therefore, the design of the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220 helps to optimize the performance of the valve core 200, achieving more precise control and higher stability. It can be understood that in this embodiment, the first pressure-bearing surface 210 and the second pressure-bearing surface 220 are subjected to the same fluid pressure as an example.

[0080] It can be understood that in the direction of movement of the valve core 200, the valve core 200 has a first pressure-bearing surface 210 and a second pressure-bearing surface 220, which means that one of the first pressure-bearing surface 210 and the second pressure-bearing surface 220 is located on the upstream side of the direction of movement of the valve core 200, and the other is located on the downstream side.

[0081] In some embodiments, the valve core 200 may move in a sliding direction along its axial direction. The valve core 200 is disposed inside the valve housing 100 and is capable of reciprocating within the valve housing 100. The valve core 200 is provided with two pressure-bearing surfaces, namely a first pressure-bearing surface 210 and a second pressure-bearing surface 220, which are respectively arranged at opposite ends of the sliding direction of the valve core 200. Specifically, it can be understood that the first pressure-bearing surface 210 is located on one side (e.g., the upstream side) in the sliding direction, and the second pressure-bearing surface 220 is located on the opposite side (e.g., the downstream side). The aforementioned "upstream side" and "downstream side" are relative to the sliding path of the valve core 200.

[0082] In some embodiments, refer to Figure 1 , Figure 2The valve core 200 is a piston structure that is axially movable along the valve housing 100. The valve core 200 is generally cylindrical, with its first pressure-bearing surface 210 facing away from the first opening 110 and its second pressure-bearing surface 220 facing the first opening 110. In this state, high-pressure fluid enters through the first opening 110 and acts on the two pressure-bearing surfaces of the valve core 200. By switching the valve core 200 between the first and second states, it is possible to control whether the high-pressure fluid at the first opening 110 can pass through the second opening 120. When the valve core 200 is in the first state, the first opening 110 and the second opening 120 are connected, allowing the high-pressure fluid to flow; while when the valve core 200 is in the second state, the valve core 200 closes the communication channel between the first opening 110 and the second opening 120, thereby blocking the flow of fluid. This design can effectively control the flow direction and on / off state of the fluid, achieving precise fluid regulation.

[0083] In some embodiments, the end face of the valve core 200 facing or away from the first opening 110 is curved, for example, including a chamfer, step, or arc transition surface. Due to the presence of these curved shapes, the fluid pressure on the valve core 200 may exhibit local variations. In this case, to simplify pressure calculations and structural descriptions, the first pressure-bearing surface 210 and the second pressure-bearing surface 220 defined in this application actually refer to the effective projection surface of the valve core 200 along the direction of fluid pressure. Specifically, the first pressure-bearing surface 210 and the second pressure-bearing surface 220 are the areas after projecting the shape of the valve core 200 along the direction of fluid pressure. These projected areas serve as the basis for determining the magnitude and direction of the fluid pressure actually acting on the valve core 200.

[0084] Furthermore, the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220 can be used to achieve different functional requirements. For example, when the area of ​​the first pressure-bearing surface 210 is smaller than the area of ​​the second pressure-bearing surface 220, it can, to some extent, facilitate the movement of the valve core 200 away from the high-pressure side under the action of fluid pressure, thereby helping the valve core 200 to open; conversely, when the area of ​​the first pressure-bearing surface 210 is larger than the area of ​​the second pressure-bearing surface 220, it can, to some extent, help the valve core 200 to maintain the closed state and improve the reliability of the seal.

[0085] In practical applications, the first pressure-bearing surface 210 and the second pressure-bearing surface 220 can be selected according to the specific structural design of the valve core 200. For example, they can be planar surfaces, slightly curved surfaces, surfaces with grooves or reinforcing ribs, or composite curved surfaces with local variations. As long as the force projection area can be clearly defined in the direction of fluid pressure, these surfaces can be used as the first pressure-bearing surface 210 or the second pressure-bearing surface 220 as defined in this application.

[0086] In some embodiments, refer to Figure 2 , Figure 3 A balancing cavity 130 is formed between the side of the valve core 200 facing away from the first opening 110 and the valve housing 100. The balancing cavity 130 is configured to communicate with a pressure source. The first pressure-bearing surface 210 is the end face of the valve core 200 located within the balancing cavity 130. The second pressure-bearing surface 220 is the end face of the valve core 200 facing the first opening 110. Specifically, the first pressure-bearing surface 210 is the end face of the valve core 200 located within the balancing cavity 130, while the second pressure-bearing surface 220 is the end face of the valve core 200 facing the first opening 110.

[0087] Through this design, the pressure within the balance chamber 130 acts on the first pressure-bearing surface 210, counteracting the fluid pressure acting on the second pressure-bearing surface 220, thereby forming a balancing force. This structure helps reduce the displacement of the valve core 200 under fluid pressure, enabling it to switch states stably with less external driving force, which is beneficial for improving the accuracy and stability of the valve core assembly. Furthermore, the configuration of the balance chamber 130 can also effectively reduce the impact force on the valve core 200 during operation, optimizing the motion control of the valve core 200.

[0088] It is understood that the pressure source can be externally connected, and the pressure source is preferably the same as the pressure of the fluid connected to the first opening 110. For example, the balancing chamber 130 can be connected to an air compressor, which supplies gas to the balancing chamber 130 at the same pressure as the side of the first opening 110.

[0089] In some embodiments, refer to Figure 3 , Figure 4 The balance chamber 130 can be connected to the first opening 110 side, so that the pressure in the balance chamber 130 will be consistent with the pressure of the fluid at the first opening 110, thereby ensuring that the first pressure surface 210 and the second pressure surface 220 are subjected to the same pressure source.

[0090] This design helps to balance the valve core 200 in the direction of force, reducing valve core 200 offset or unstable movement caused by uneven pressure. By making the first pressure-bearing surface 210 and the second pressure-bearing surface 220 work under the same pressure source, the requirement for external driving force can be effectively reduced, maintaining the stability of the valve core 200 and improving the accuracy of the valve core 200's response. At the same time, this balanced design can also optimize the control accuracy and reliability of the valve core assembly under various operating conditions, especially under high pressure or complex fluid conditions.

[0091] In some embodiments, the balancing chamber 130 is connected to the first opening 110 through a channel 270, so that the pressure at the first opening 110 serves as the pressure source for the balancing chamber 130. This design ensures that the pressure in the balancing chamber 130 is consistent with the fluid pressure at the first opening 110, thereby guaranteeing that the first pressure-bearing surface 210 and the second pressure-bearing surface 220 form an effective force contrast under the same pressure source.

[0092] Specifically, the connection of the channel 270 allows the fluid pressure from the first opening 110 to be directly transmitted to the balance chamber 130, ensuring that the pressure of the gas or fluid in the balance chamber 130 is the same as the fluid pressure at the first opening 110. This design prevents unnecessary displacement or vibration of the valve core 200 under uneven pressure conditions, ensuring the stability and reliability of the valve core 200 under different states. Furthermore, due to the consistency of the pressure source, the response speed and accuracy of the valve core 200 can be optimized, especially in high-frequency operation or precision control applications, effectively improving the overall system performance.

[0093] In some embodiments, the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220 is zero. In this case, the fluid pressure on the first pressure-bearing surface 210 and the second pressure-bearing surface 220 is the same. This means that when the valve core 200 is driven to move, the pressure effects of the two pressure-bearing surfaces cancel each other out or balance each other, so that no additional driving force is generated.

[0094] Specifically, when the areas of the first pressure-bearing surface 210 and the second pressure-bearing surface 220 are equal, the valve core 200 will not experience additional pushing or resistance under pressure. The force required to drive the valve core 200 comes only from the friction between the valve core 200 and the valve housing 100 and other external forces. Therefore, the process of driving the valve core 200 becomes smoother, reducing additional forces and avoiding interference from pressure on the movement of the valve core 200. Thus, during the driving process, the pressure on the first opening 110 side no longer significantly affects the driving force of the valve core 200, thereby helping to improve the movement accuracy and stability of the valve core 200.

[0095] The advantage of this design is that it effectively reduces the force required to drive the valve core 200, thereby reducing the current demand in the coil assembly 101. Since electromagnetic force is proportional to current, reducing the current helps reduce system energy consumption, achieving energy savings. Furthermore, the reduced driving force also improves the response speed of the valve core 200, avoiding delays or hysteresis caused by large forces, thus enhancing the overall performance and efficiency of the system.

[0096] In some embodiments, the area difference between the first pressure-receiving surface 210 and the second pressure-receiving surface 220 is greater than zero. This means that the areas of the fluid pressure acting on the first pressure-receiving surface 210 and the second pressure-receiving surface 220 are different, resulting in unequal pressure forces acting on them, which in turn generate a driving force that pushes the valve core 200 toward the second pressure-receiving surface 220.

[0097] Specifically, when the area of ​​the first pressure-bearing surface 210 is larger than the area of ​​the second pressure-bearing surface 220, the fluid pressure on the first pressure-bearing surface 210 is greater. Since the first pressure-bearing surface 210 is located at one end of the valve core 200, and the second pressure-bearing surface 220 is located at the other end of the valve core 200, this pressure difference causes the valve core 200 to exert a force towards the second pressure-bearing surface 220. When the valve core 200 is in the second state, the fluid pressure helps the valve core 200 maintain the state of blocking the first opening 110 and the second opening 120, further enhancing the sealing effect.

[0098] With this design, the valve core 200 can stably maintain the blocking state of the first opening 110 and the second opening 120 under the action of external force, thereby avoiding the risk of accidental opening and effectively improving the sealing performance. This pressure difference design not only improves the sealing performance of the valve core 200, but also increases the stability of the valve core 200 during dynamic switching, ensuring the reliability and control accuracy of the system during operation.

[0099] In some embodiments, the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220 is less than zero. This means that the fluid pressure acting on the first pressure-bearing surface 210 and the second pressure-bearing surface 220 is different, and the area of ​​the first pressure-bearing surface 210 is smaller than the area of ​​the second pressure-bearing surface 220, which in turn results in unequal pressure forces acting on them, generating a driving force that pushes the valve core 200 toward the first pressure-bearing surface 210.

[0100] Specifically, when the area of ​​the first pressure-bearing surface 210 is smaller than the area of ​​the second pressure-bearing surface 220, the fluid pressure on the second pressure-bearing surface 220 is greater. Since the first pressure-bearing surface 210 is located at one end of the valve core 200 and the second pressure-bearing surface 220 is located at the other end of the valve core 200, this pressure difference causes the valve core 200 to exert a force towards the first pressure-bearing surface 210. When the valve core 200 is in the second state, this pressure difference helps to open the valve core 200, maintaining the connection between the first opening 110 and the second opening 120.

[0101] The advantage of this design is that it can utilize the fluid pressure to push the valve core 200, making it easier to open. By adjusting the area difference between the first pressure-bearing surface 210 and the second pressure-bearing surface 220, the performance and response speed of the valve core 200 can also be optimized according to specific operating conditions.

[0102] In some embodiments, refer to Figure 1 , Figure 2 The valve housing 100 is provided with a movable cavity 140, and the valve core 200 is movably disposed in the movable cavity 140. A stop portion 150 is provided within the movable cavity 140. When the valve core 200 is in the second state, the valve core 200 and the stop portion 150 are in a sealing fit to block the communication channel between the first opening 110 and the second opening 120. When the valve core 200 is in the first state, the valve core 200 and the stop portion 150 are released from the sealing fit, allowing the first opening 110 and the second opening 120 to communicate. By providing the stop portion 150, the valve core 200 can cooperate with the stop portion 150 to block the first opening 110 and the second opening 120, preventing communication between them.

[0103] It is understandable that the design of the stop portion 150 allows the sealing area to be located between the valve core 200 and the stop portion 150, thus avoiding the need for tight contact between the valve core 200 and the valve body 100 when the sealing area is located between the valve core 200 and the side wall of the moving cavity 140. Such tight contact could lead to increased friction between the valve core 200 and the valve body 100, thereby increasing the force required to drive the valve core 200. The design of the stop portion 150 effectively reduces the friction between the valve core 200 and the valve body 100, allowing for a clearance fit between them. This not only reduces frictional resistance but also helps improve the flexibility of the valve core 200's movement, reduces the energy required to drive the valve core 200, and thus improves the system's response speed and efficiency.

[0104] In some embodiments, refer to Figure 2 , Figure 3 When the valve core 200 is in the second state, a first sealing band 250 and a second sealing band 260 are formed between the valve core 200 and the valve housing 100, and the second opening 120 is located between the first sealing band 250 and the second sealing band 260. Through the first sealing band 250 and the second sealing band 260, the second opening 120 can be isolated from the first opening 110 side and from the balance chamber 130 side, thereby achieving effective blocking of the first opening 110 and the second opening 120.

[0105] This design helps enhance the sealing effect of the valve core 200 in the second state. The cooperation between the first sealing strip 250 and the second sealing strip 260 ensures that fluid cannot flow through the second opening 120, thereby effectively preventing fluid communication between the first opening 110 and the second opening 120. Simultaneously, the partition on the side of the balance chamber 130 ensures the sealing between the valve core 200 and the valve body 100, preventing leakage or pressure fluctuations from interfering with the movement of the valve core 200. This structural design not only improves the valve's sealing performance but also enhances the stability of the valve core 200 during operation, contributing to improved system reliability and control accuracy.

[0106] In some embodiments, the valve core 200 includes a first sealing portion 230 and a second sealing portion 240. When the valve core 200 is in a second state, a first sealing band 250 is formed between the first sealing portion 230 and the valve housing 100, and a second sealing band 260 is formed between the second sealing portion 240 and the valve housing 100. When the valve core 200 is in a first state, both the first sealing portion 230 and the second sealing portion 240 are released from their sealing fit with the valve housing 100. Through the sealing effect of the first sealing band 250 and the second sealing band 260, the fluid communication between the first opening 110 and the second opening 120 can be effectively blocked, ensuring the sealing performance of the valve in the second state.

[0107] In some embodiments, the stop portion 150 of the valve housing 100 includes a first boss 151 and a second boss 152. When the valve core 200 is in the second state, the valve core 200 engages with the first boss 151 and the second boss 152 respectively to form a first sealing band 250 and a second sealing band 260. When the valve core 200 is in the first state, the valve core 200 disengages from the first boss 151 and the second boss 152. Through the sealing effect of the first sealing band 250 and the second sealing band 260, the fluid communication between the first opening 110 and the second opening 120 can be effectively blocked, thereby ensuring the sealing performance of the valve in the second state and preventing fluid leakage or unnecessary flow.

[0108] When the valve core 200 is in the first state, the valve core 200 releases its sealing engagement with the first boss 151 and the second boss 152, respectively, allowing the first opening 110 to communicate with the second opening 120, thus enabling fluid passage. At this time, the sealing effect of the valve core 200 is released, and the valve is in the open state, allowing for normal fluid flow. This design not only improves the stability of the valve core 200 but also reduces friction between the valve core 200 and the valve body 100, improving the valve's service life and control accuracy.

[0109] In some embodiments, refer to Figure 2 , Figure 3The first sealing portion 230 of the valve core 200 is used to cooperate with the first boss 151 to form a first sealing band 250, and the second sealing portion 240 of the valve core 200 is used to cooperate with the second boss 152 to form a second sealing band 260. Through the cooperation of the first sealing portion 230 with the first boss 151 and the cooperation of the second sealing portion 240 with the second boss 152, the communication channel between the first opening 110 and the second opening 120 can be effectively blocked when the valve core 200 is in the second state, ensuring the sealing performance of the valve.

[0110] Specifically, the formation of the first sealing band 250 and the second sealing band 260 helps to effectively block the flow of fluid when the valve core 200 is in the second state, preventing fluid from passing through the second opening 120, thereby ensuring the safety and stability of the system. When the valve core 200 is in the first state, the sealing engagement between the first sealing part 230 and the first boss 151, and the sealing engagement between the second sealing part 240 and the second boss 152, is released, opening the communication channel between the first opening 110 and the second opening 120, allowing fluid to pass through.

[0111] In some embodiments, at least one of the first boss 151 and the first sealing portion 230 is provided with a first sealing element 231. The first sealing element 231 can improve the sealing performance between the first boss 151 and the first sealing portion 230, reducing the possibility of leakage. Exemplarily, the first sealing element 231 is an elastic sealing ring. Through the function of this sealing element, it can be ensured that when the valve core 200 is in the second state, the first sealing strip 250 can effectively block fluid leakage, ensuring the valve's sealing performance and the system's reliability.

[0112] In some embodiments, at least one of the second boss 152 and the second sealing portion 240 is provided with a second seal 152a. The second seal 152a also improves the sealing performance between the second boss 152 and the second sealing portion 240, preventing leakage and enhancing sealing performance. For example, the second seal 152a can also be an elastic sealing ring, whose working principle is similar to that of the first seal 231, further ensuring the stability and reliability of the valve in the second state by enhancing the sealing effect.

[0113] By configuring a sealing element between the first boss 151, the first sealing part 230, the second boss 152, and the second sealing part 240, the sealing performance between the valve core 200 and the valve body 100 can be significantly improved, reducing operational errors or system failures caused by fluid leakage, thereby improving the overall performance and working efficiency of the valve.

[0114] In some embodiments, refer to Figure 1 , Figure 2The valve core assembly also includes an elastic element 300, which is used to return the valve core 200 to its initial position, corresponding to the position of the valve core 200 in either the first or second state. The elastic element 300 can be a spring, a rubber gasket, or other suitable elastic element with a certain elastic force. After the valve core 200 moves under the action of the electromagnetic coil, the elastic element 300 facilitates its return to the initial position. It should be understood that the initial position can be the position of the valve core 200 in the first state or the position of the valve core 200 in the second state.

[0115] When the initial position of the valve core 200 is the position it was in in the first state, the valve core assembly is normally open. When it needs to be closed, the valve core 200 is moved by electromagnetic force, thereby blocking the first opening 110 and the second opening 120; when it needs to be opened, the electromagnetic force is removed, and the valve core 200 will automatically open by means of the pressure between the elastic element 300 and the first opening 110 side, so that the first opening 110 and the second opening 120 are connected.

[0116] When the initial position of the valve core 200 is the position it was in in the second state, the valve core assembly is normally closed. In this state, the valve core 200 automatically blocks the first opening 110 and the second opening 120, ensuring the system is in a closed state. When it needs to be opened, the valve core 200 is moved by electromagnetic force, thereby connecting the first opening 110 and the second opening 120. After the electromagnetic force is removed, the elastic element 300 helps the valve core 200 return to the normally closed state, thereby blocking the opening.

[0117] In some embodiments, the valve core assembly includes a stationary iron core 400 and a moving iron core 500. The moving iron core 500 is connected to the valve core 200, and an elastic element 300 is connected to the moving iron core 500 to allow the moving iron core 500 to elastically reset. The moving iron core 500 is configured to move relative to the stationary iron core 400 under the action of magnetic force to drive the valve core 200 to switch between a first state and a second state.

[0118] Specifically, when the electromagnetic coil is energized, the magnetic force causes the moving iron core 500 to move under the guidance of the stationary iron core 400, thereby driving the valve core 200 to shift position and change its position, switching it from the first state to the second state, or from the second state back to the first state. During this process, the elastic element 300 ensures that the valve core 200 can return to its initial state when no electromagnetic force is applied, maintaining the stability of the valve core 200 and providing appropriate restoring force to prevent the valve core 200 from malfunctioning due to external interference.

[0119] This structural design can ensure efficient switching and stability of the valve core assembly under different working conditions by precisely controlling the electromagnetic force and combining it with the restoring force of the elastic element 300, thereby improving the reliability and control accuracy of the system.

[0120] It is understood that the elastic element 300 is used to apply a restoring force to the moving iron core 500 so that the moving iron core 500 can return to its initial position after the driving force is removed. In some embodiments, the elastic element 300 may be disposed between the moving iron core 500 and the stationary iron core 400, for example, it may be a helical spring or a wave spring, generating an axial preload in the assembled state, thereby helping the moving iron core 500 to displace in the direction opposite to the driving force. In other embodiments, the elastic element 300 may be disposed between the moving iron core 500 and other structural components, as long as it can provide the function of providing a corresponding restoring force after the moving iron core 500 is driven, the structural design requirements can be met. In this embodiment, the specific connection position of the elastic element 300 is not limited, and its setting method can be flexibly adjusted according to the overall assembly structure and movement space.

[0121] In some embodiments, the valve core assembly further includes a valve seat 600 for supporting and defining the range of motion of the valve core 200. A first boss 151, a second boss 152, a first opening 110, and a second opening 120 are disposed on the valve seat 600. The valve core 200 is connected to the moving iron core 500 via a connecting rod 510. The moving iron core 500 can move along the sliding direction of the valve core 200 under the action of electromagnetic force generated by the electromagnetic coil, thereby driving the valve core 200 to switch states within the valve seat 600. This structural arrangement facilitates control of the valve core 200 in both energized and de-energized states, making it suitable for pneumatic or hydraulic systems requiring controllable switching of on / off states.

[0122] It is understood that the valve housing 100 is used to define the active space of the valve core 200 and form a closed cavity structure suitable for fluid flow and cut-off. In some embodiments, the valve housing 100 can be a one-piece structure, that is, the entire valve housing 100 is processed into a single component by means of molding or machining; in other embodiments, the valve housing 100 can also be composed of multiple components spliced ​​together, for example, it may include a valve seat 600, a moving iron core 500 housing and a stationary iron core 400 respectively processed and formed, which together define a working cavity for accommodating the valve core 200.

[0123] For example, such as Figure 1 and Figure 2As shown, in this embodiment, the valve housing 100 is composed of a moving iron core 500, an iron core cover 520, a stationary iron core 400, and a valve seat 600. The valve seat 600 defines the mounting area of ​​the valve core 200 and is provided with a first opening 110 and a second opening 120 communicating with an external pipeline. The moving iron core 500, the iron core cover 520, and the stationary iron core 400, together with an electromagnetic coil, form an electromagnetic drive mechanism to drive the valve core 200 to move in a set direction under the control of an electrical signal. This multi-component combined structural design is beneficial to improving the flexibility of the manufacturing process, while facilitating later maintenance and partial replacement, and helping to adapt to the specific requirements of different usage scenarios for assembly methods and structural strength. In this embodiment, the specific structural form of the valve housing 100 is not limited; it can be a one-piece molded structural component or it can be composed of multiple components spliced ​​or connected to form an internal cavity for accommodating the valve core 200. The structure of the valve body 100 can be flexibly adjusted according to the assembly requirements, flow channel design or processing technology in the actual application scenario. As long as it can realize the function of containing and guiding the valve core 200, it can be regarded as an optional implementation form of the technical solution of this application.

[0124] In some embodiments, the size of the first opening 110 is 5 to 12 mm. During the operation of the air suspension system, air intake and exhaust operations are required, and solenoid valves 10 are typically used to control the airflow.

[0125] However, during exhaust operation, a whistling sound is often produced. This noise not only affects the quietness of the vehicle but may also reduce the comfort of the occupants. The applicant found that the existing first opening 110 is relatively small, generally less than 4 mm, and therefore prone to generating noise during exhaust. By increasing the size of the first opening 110, the noise generated during exhaust can be effectively reduced or avoided.

[0126] Increasing the size of the first opening 110 can effectively reduce air turbulence generated when airflow passes through the small hole, thereby reducing airflow speed and pressure fluctuations and mitigating or eliminating noise caused by unstable airflow. By rationally designing the size range of the first opening 110, such as 5 to 12 millimeters, it is possible to reduce noise during the exhaust process while ensuring airflow efficiency, thereby improving the overall performance of the vehicle's air suspension system and enhancing the comfort experience of the occupants.

[0127] For example, the dimensions of the first opening 110 are 5.17 mm, 5.26 mm, 5.4 mm, 5.5 mm, 5.59 mm, 5.65 mm, 5.82 mm, 6.02 mm, 6.5 mm, 6.72 mm, 6.87 mm, 6.95 mm, 7.44 mm, 47.6 mm, 8 mm, 8.23 ​​mm, 8.6 mm, 9.09 mm, 9.47 mm, 9.59 mm, 9.8 mm, 10.47 mm, 10.85 mm, and 10.96 mm, but this application embodiment does not limit the dimensions.

[0128] In some embodiments, the size of the first opening 110 is 7 to 9 mm.

[0129] It is understood that, in this embodiment, the size of the first opening 110 can be understood based on its structural shape. When the first opening 110 has a circular structure, the size of the first opening 110 refers to the diameter of the circular opening; when the first opening 110 is an opening of other geometric shapes, such as a square opening or a polygonal opening, the size of the first opening 110 can be defined as the diameter of the outer circle of the opening.

[0130] According to the second aspect of this disclosure, referring to Figure 6 , Figure 8 A solenoid valve 10 is provided, including the valve core assembly described in the above embodiments. This solenoid valve 10 possesses all the beneficial effects of the valve core assembly described above, which will not be elaborated further herein.

[0131] In some embodiments, refer to Figure 7 , Figure 9 The solenoid valve 10 includes a coil assembly 101, which is disposed on the outer periphery of the moving iron core 500 and / or the stationary iron core 400 of the valve core assembly. When energized, the coil assembly 101 generates electromagnetic force, causing the moving iron core 500 to move relative to the stationary iron core 400, thereby driving the valve core 200 to switch between a first state and a second state. With this configuration, the solenoid valve 10, upon receiving an electrical signal, can use electromagnetic force to act on the moving iron core 500, causing it to displace relative to the stationary iron core 400, thereby pushing the valve core 200 to move accordingly, achieving on / off control of the fluid passage. This design enables the solenoid valve 10 to respond accurately and quickly to external control signals, ensuring the flexibility and reliability of the system.

[0132] According to the third aspect of this disclosure, referring to Figure 5 , Figure 6 The present invention provides an intake / exhaust valve, including the valve core assembly of the above embodiments or the solenoid valve 10 of the above embodiments. This intake / exhaust valve has all the beneficial effects of the valve core assembly or the solenoid valve 10 described above, which will not be repeated here.

[0133] In some embodiments, refer to Figure 6, Figure 7 The system also includes a body 11 having a chamber 11a, with a first port 11b and a third port 11d communicating with the chamber 11a. A valve core assembly is disposed on the body 11 and is used to control the opening and closing of the first port 11b, while the third port 11d is used to connect to external equipment. Through the valve core assembly, fluid entering the chamber 11a through the third port 11d can be discharged through the first port 11b, and the opening and closing of the first port 11b can be controlled. This design effectively regulates the flow of fluid within the chamber 11a, ensuring smooth fluid discharge when needed, while in other situations, the pipeline can be cut off by the control of the valve core 200, maintaining the system's sealing and stability.

[0134] For example, the third port 11d is connected to the air compressor, and the valve core assembly can control the air compressor to draw in or discharge air from the first port 11b. When the air compressor needs to draw in air, the valve core assembly opens the first port 11b, allowing air to enter the chamber 11a and flow into the air compressor through the third port 11d; when it needs to discharge air, the valve core assembly closes the first port 11b, allowing the air in the chamber 11a to be discharged through the first port 11b, thus maintaining the normal operation and fluid control of the air compressor.

[0135] In some embodiments, refer to Figure 6 , Figure 7 The main body 11 is provided with a second port 11c communicating with the chamber 11a. A control valve 11e is provided at the second port 11c. The control valve 11e is used to control the one-way flow of the second port 11c so that when the pressure in the chamber 11a exceeds the set pressure, the fluid is discharged from the chamber 11a through the second port 11c. Through the reasonable configuration of the first port 11b, the second port 11c, and the third port 11d, various gas flow functions can be realized, including gas entering and exiting through the first port 11b, exiting through the second port 11c, and connecting to external equipment through the third port 11d. This design allows the system to flexibly adjust the gas flow under different operating conditions, ensuring stable equipment operation and effectively avoiding overpressure in the chamber 11a.

[0136] For example, when the air compressor is drawing in air, the control valve 11e prevents gas from entering through the second port 11c. Instead, the valve core assembly opens the first port 11b, thus enabling the air compressor to draw in air. When the air compressor is discharging air, the valve core assembly closes the first port 11b, preventing gas from flowing out through it. Simultaneously, the control valve 11e opens, allowing gas in chamber 11a to be discharged through the second port 11c. If, under certain circumstances, it is necessary to discharge through the first port 11b, the valve core assembly can reopen it, allowing gas to flow out. This design allows the system to flexibly control the flow and discharge of gas according to different operational needs, thus realizing the air compressor's drawing and discharging functions.

[0137] In some embodiments, refer to Figure 6 , Figure 7 The control valve 11e includes a check valve. This check valve is designed to ensure that fluid flows in only one direction, thus preventing backflow and ensuring proper gas discharge within chamber 11a. When the pressure within chamber 11a reaches a set threshold, the check valve activates, allowing gas to discharge through the second port 11c; otherwise, the check valve remains closed, preventing backflow of gas into chamber 11a.

[0138] In some embodiments, a sensor 11f is provided at the second port 11c. The sensor 11f is used to detect at least one of the pressure, flow rate, and composition of the fluid flowing through the second port 11c. By monitoring the fluid parameters in real time, the sensor 11f can provide indirect feedback on the internal state of the chamber 11a. This information can be used to adjust the opening and closing of the solenoid valve 10, further optimizing the system's operating efficiency. For example, if the pressure at the second port 11c is detected to reach a preset value, the sensor 11f can trigger the solenoid valve 10 to open, allowing the chamber 11a to vent through the first port 11b, thereby preventing equipment damage or system instability.

[0139] According to a fourth aspect of this disclosure, an air suspension system is provided, including the valve core assembly, the solenoid valve, or the intake / exhaust valve as described in the above embodiments. This air suspension system possesses all the beneficial effects of the valve core assembly, solenoid valve, or intake / exhaust valve as described in the above embodiments, which will not be elaborated further herein.

[0140] In some embodiments, the air suspension system includes an intake / exhaust valve and a pressure device (not shown), the pressure device being connected to the third port 11d of the intake / exhaust valve. Exemplarily, the pressure device may be a pressure tank, an air compressor, or other similar equipment.

[0141] In some embodiments, the pressure device includes an air compressor.

[0142] In some embodiments, a gas storage device (not shown) is also included, which is connected to the second port 11c of the inlet and outlet valves. This design allows for effective control of gas storage and release, meeting the needs of different operating conditions.

[0143] In some applications, gas needs to be stored using a gas storage device. Therefore, in this state, when the first port 11b is closed, the pressure inside chamber 11a will gradually increase. When the pressure inside chamber 11a exceeds a set value, the gas will be discharged through the second port 11c and enter the gas storage device for storage. This design ensures that the system can efficiently store gas under specific operating conditions, avoiding gas waste.

[0144] Under normal operating conditions, the air compressor can perform exhaust and intake functions by controlling the opening and closing of the first port 11b. When exhaust is required, the first port 11b opens, and the air compressor discharges air through the first port 11b. When intake is required, the first port 11b opens, and the air compressor can draw air from the chamber 11a to begin the next cycle of operation.

[0145] In the gas collection state, the air compressor can be allowed to draw in air by controlling the opening of the first port 11b. When the air compressor draws in air, the gas enters the chamber 11a through the first port 11b. When the air compressor discharges air, the first port 11b is closed, and the gas enters the gas storage device through the second port 11c for storage, ready for future use. This configuration not only improves the system's operating efficiency but also optimizes the control process of gas storage and release.

[0146] For example, the air storage device can be an air tank or the like. The air tank is used to store compressed air and can provide a gas supply when needed, especially when the air compressor is not working or the operating pressure is unstable, the air tank can provide a stable air source.

[0147] According to a fifth aspect of this disclosure, a vehicle is provided, including the valve core assembly, the solenoid valve 10, the intake / exhaust valve, or the air suspension system described in the above embodiments. This vehicle possesses all the beneficial effects of the valve core assembly, solenoid valve 10, intake / exhaust valve, or air suspension system described above, which will not be elaborated further herein.

[0148] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this disclosure does not make any specific restrictions.

[0149] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0150] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0151] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0152] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A valve core assembly, characterized in that, include: The valve housing (100) has a first opening (110) and a second opening (120); and A valve core (200) is movably disposed in the valve housing (100) and configured to switch between a first state and a second state under the action of an external force. In the direction of movement of the valve core (200), the valve core (200) has a first pressure-bearing surface (210) and a second pressure-bearing surface (220). Fluid pressure acts on the valve core (200) along the normal directions of the first pressure-bearing surface (210) and the second pressure-bearing surface (220), respectively, and the directions of the fluid pressure acting on the first pressure-bearing surface (210) and the second pressure-bearing surface (220) are opposite. When the valve core (200) is in the first state, the first opening (110) is connected to the second opening (120); when the valve core (200) is in the second state, the communication channel between the first opening (110) and the second opening (120) is closed to block the connection between the first opening (110) and the second opening (120).

2. The valve core assembly according to claim 1, characterized in that, The valve core (200) forms a balance chamber (130) with the valve housing (100) on the side opposite to the first opening (110), and the balance chamber (130) is configured to communicate with a pressure source; The first pressure-bearing surface (210) is the end face of the valve core (200) located in the balance chamber (130); The second pressure-bearing surface (220) is the end face of the valve core (200) facing the first opening (110).

3. The valve core assembly according to claim 2, characterized in that, The balancing chamber (130) is connected to the first opening (110) through a channel (270) so that the pressure at the first opening (110) serves as the pressure source for the balancing chamber (130).

4. The valve core assembly according to claim 1, characterized in that, The area difference between the first pressure-bearing surface (210) and the second pressure-bearing surface (220) is zero; Alternatively, the area difference between the first pressure-bearing surface (210) and the second pressure-bearing surface (220) is greater than zero; Alternatively, the area difference between the first pressure-bearing surface (210) and the second pressure-bearing surface (220) is less than zero.

5. The valve core assembly according to claim 1, characterized in that, The valve housing (100) is provided with a movable cavity (140), the valve core (200) is movably disposed in the movable cavity (140), and the valve housing (100) is provided with a stop part (150) in the movable cavity (140); When the valve core (200) is in the second state, the valve core (200) is in a sealing fit with the stop portion (150) to block the communication channel between the first opening (110) and the second opening (120); and / or, When the valve core (200) is in the first state, the valve core (200) and the stop part (150) are released from sealing cooperation so that the first opening (110) and the second opening (120) are connected.

6. The valve core assembly according to any one of claims 1-5, characterized in that, When the valve core (200) is in the second state, a first sealing strip (250) and a second sealing strip (260) are formed between the valve core (200) and the valve housing (100), and the second opening (120) is located between the first sealing strip (250) and the second sealing strip (260).

7. The valve core assembly according to claim 6, characterized in that, The valve core (200) includes a first sealing part (230) and a second sealing part (240); When the valve core (200) is in the second state, a first sealing strip (250) is formed between the first sealing part (230) and the valve housing (100), and a second sealing strip (260) is formed between the second sealing part (240) and the valve housing (100); and / or, When the valve core (200) is in the first state, both the first sealing part (230) and the second sealing part (240) are released from sealing with the valve body (100).

8. The valve core assembly according to claim 6, characterized in that, The stop portion (150) of the valve housing (100) includes a first boss (151) and a second boss (152); When the valve core (200) is in the second state, the valve core (200) cooperates with the first boss (151) and the second boss (152) respectively to form the first sealing strip (250) and the second sealing strip (260); and / or, When the valve core (200) is in the first state, the valve core (200) releases its sealing engagement with the first boss (151) and the second boss (152) respectively.

9. The valve core assembly according to claim 8, characterized in that, The first sealing portion (230) of the valve core (200) is used to cooperate with the first boss (151) to form the first sealing strip (250); and / or, The second sealing portion (240) of the valve core (200) is used to cooperate with the second boss (152) to form the second sealing strip (260).

10. The valve core assembly according to claim 9, characterized in that, At least one of the first boss (151) and the first sealing part (230) is provided with a first sealing element (231); And / or, at least one of the second boss (152) and the second sealing part (240) is provided with a second seal (152a).

11. The valve core assembly according to any one of claims 1-5, characterized in that, The valve core assembly further includes an elastic element (300) for restoring the valve core (200) to an initial position, the initial position corresponding to the position of the valve core (200) when it is in the first state or the second state.

12. The valve core assembly according to claim 11, characterized in that, The valve core assembly includes a stationary iron core (400) and a moving iron core (500). The moving iron core (500) is connected to the valve core (200), and the elastic element (300) is connected to the moving iron core (500) so that the moving iron core (500) can be elastically reset. The moving iron core (500) is configured to move relative to the stationary iron core (400) under the action of magnetic force, so as to drive the valve core (200) to switch between the first state and the second state.

13. The valve core assembly according to any one of claims 1-5, characterized in that, The size of the first opening (110) is 5 to 12 mm.

14. A solenoid valve (10), characterized in that, Includes the valve core assembly as described in any one of claims 1-13.

15. The solenoid valve (10) according to claim 14, characterized in that, The solenoid valve (10) includes a coil assembly (101) disposed on the outer periphery of the moving iron core (500) and / or the stationary iron core (400) of the valve core assembly, for generating electromagnetic force when energized, causing the moving iron core (500) to move relative to the stationary iron core (400) to drive the valve core (200) to switch between the first state and the second state.

16. An intake and exhaust valve, characterized in that, Includes the valve core assembly as described in any one of claims 1-13, or the solenoid valve (10) as described in any one of claims 14-15.

17. The intake and exhaust valve according to claim 16, characterized in that, It also includes a body (11) having a chamber (11a), the body (11) being provided with a first port (11b) and a third port (11d) communicating with the chamber (11a); The valve core assembly is disposed on the body (11) and is used to control the opening and closing of the first port (11b), and the third port (11d) is used to connect to external devices.

18. The intake and exhaust valve according to claim 17, characterized in that, The main body (11) is provided with a second port (11c) communicating with the chamber (11a). A control valve (11e) is provided at the second port (11c). The control valve (11e) is used to control the second port (11c) to be open in one direction so that when the pressure in the chamber (11a) exceeds the set pressure, the fluid is discharged from the chamber (11a) through the second port (11c).

19. The intake and exhaust valve according to claim 18, characterized in that, The control valve (11e) includes a check valve.

20. The intake and exhaust valve according to claim 18, characterized in that, The second port (11c) is provided with a sensor (11f) for detecting at least one of the pressure, flow rate and composition of the fluid flowing through the second port (11c).

21. An air suspension system, characterized in that, It includes the valve core assembly according to any one of claims 1-13, or the solenoid valve according to any one of claims 14-15, or the intake / exhaust valve according to any one of claims 16-20.

22. The air suspension system according to claim 21, characterized in that, The air suspension system includes an intake and exhaust valve and a pressure device, the pressure device being connected to the third port (11d) of the intake and exhaust valve.

23. The air suspension system according to claim 22, characterized in that, The pressure equipment includes an air compressor.

24. The air suspension system according to claim 22, characterized in that, It also includes a gas storage device, which is connected to the second port (11c) of the inlet and outlet valve.

25. A vehicle, characterized in that, It includes the valve core assembly according to any one of claims 1-13, or the solenoid valve (10) according to any one of claims 14-15, or the intake and exhaust valve according to any one of claims 16-20, or the air suspension system according to any one of claims 21-24.

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