Valve device, shock absorber, suspension system and vehicle

Abstract

The invention discloses a valve device, a shock absorber, a suspension system and a vehicle. The valve device comprises a valve shell, a first valve assembly and a second valve assembly, a mounting cavity is formed in the valve shell, at least part of the first valve assembly is arranged in the mounting cavity, at least part of the second valve assembly is arranged in the mounting cavity, and the valve shell is of an integrally-formed structure. According to the valve device, the valve shell is integrally formed, and the mounting cavity is formed in the valve shell, so that the first valve assembly and the second valve assembly are at least partially arranged in the mounting cavity, and fluid can flow between the first valve assembly and the second valve assembly through the mounting cavity; fluid can be effectively prevented from leaking when flowing through the first valve assembly and the second valve assembly, and the sealing performance of the valve device is improved. Meanwhile, a connecting pipeline between the first valve assembly and the second valve assembly is omitted, so that the integration level of the first valve assembly and the second valve assembly is high, and the overall size of the valve device is small.

Description

Technical Field

[0001] The present application relates to the technical field of valve devices, and in particular to a valve device, a shock absorber, a suspension system and a vehicle. Background Art

[0002] In the related art, when the medium flows between valve components of the valve device, there is a risk of leakage, which affects the performance of the valve device. Summary of the invention

[0003] The present application aims to solve at least one of the above technical problems in the prior art to a certain extent. To this end, the present application proposes a valve device, which is conducive to reducing the risk of medium leakage of the valve device.

[0004] The present application also proposes a shock absorber having the valve device.

[0005] The application also proposes a suspension system having the shock absorber.

[0006] The application also proposes a vehicle with the above suspension system.

[0007] According to the valve device of the embodiment of the present application, it is characterized in that it includes a valve housing, a first valve component and a second valve component, an installation cavity is formed in the valve housing, at least a portion of the first valve component is arranged in the installation cavity, at least a portion of the second valve component is arranged in the installation cavity, and the valve housing is an integrally formed structure.

[0008] According to the valve device of the embodiment of the present application, the valve housing is integrally formed and an installation cavity is provided in the valve housing, so that the first valve assembly and the second valve assembly are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly and the second valve assembly through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly and the second valve assembly, thereby improving the sealing performance of the valve device. At the same time, the connecting pipeline between the first valve assembly and the second valve assembly is eliminated, so that the integration of the first valve assembly and the second valve assembly is high, and the overall volume of the valve device is small.

[0009] According to some embodiments of the present application, a valve channel is formed in the valve housing, and the first valve assembly and the second valve assembly are communicated with each other through the valve channel.

[0010] According to some embodiments of the present application, the second valve component is interference connected to the valve housing.

[0011] According to some embodiments of the present application, the second valve assembly includes a second valve body, and the second valve body is interference connected to the valve housing.

[0012] According to some embodiments of the present application, a first channel is defined in the second valve body, and the first channel is connected to the first valve assembly through the valve channel.

[0013] According to some embodiments of the present application, a protruding structure protruding radially away from the second valve body is formed on the inner peripheral wall of the valve housing, and the protruding structure forms the valve channel.

[0014] According to some embodiments of the present application, a first chamber is formed between the protruding structure, a portion of the valve housing, and the second valve body, and the first chamber is communicated with the first channel.

[0015] According to some embodiments of the present application, the valve channel is connected to the first chamber.

[0016] According to some embodiments of the present application, the second valve body also has a second through hole, the second through hole can be connected to the first chamber, the first channel is suitable for connecting the first cavity of the shock absorber, and the second through hole is used to connect the second cavity of the shock absorber with the first channel.

[0017] According to some embodiments of the present application, in a radial direction of the second valve body, the second through hole is separated from the first channel.

[0018] According to some embodiments of the present application, a plurality of second through holes are provided, and the plurality of second through holes are spaced apart around the first channel.

[0019] According to some embodiments of the present application, the second valve assembly further includes a valve plate, which can block or open the second through hole to connect or disconnect the second cavity of the shock absorber and the first channel.

[0020] According to some embodiments of the present application, the second valve assembly further includes a first elastic member, which is disposed in the first chamber and is used to apply an elastic force to the valve sheet toward the second valve body.

[0021] According to some embodiments of the present application, the valve plate is an annular structure, and the hollow portion of the valve plate is suitable for communicating with the first channel.

[0022] According to some embodiments of the present application, a pressure relief port is provided on the valve housing, and the pressure relief port is suitable for connecting to the second cavity of the shock absorber. A pressure relief chamber is enclosed between the first valve assembly and part of the valve housing, and the pressure relief chamber is communicated with the pressure relief port.

[0023] According to some embodiments of the present application, the first valve assembly includes: a first valve core and a first valve seat, the first valve core is formed with an accommodating cavity, the first valve seat is connected to the first valve core and the first valve seat is at least partially disposed in the accommodating cavity.

[0024] According to some embodiments of the present application, the first valve core is located at one end of the first valve seat facing the second valve assembly, the first valve core can move relative to the first valve seat in a direction close to or away from the second valve assembly, and the pressure relief chamber is formed between the first valve seat and the valve housing.

[0025] According to some embodiments of the present application, a throttling hole is provided on the first valve core, and the valve channel is connected to the accommodating cavity through the throttling hole.

[0026] According to some embodiments of the present application, the axis of the throttling hole and the axis of the first valve core are located on the same straight line.

[0027] According to some embodiments of the present application, the first valve assembly also includes a second elastic member, which is arranged in the accommodating cavity. In the axial direction of the first valve core, one end of the second elastic member is connected to the first valve core, and the other end of the second elastic member is connected to the first valve seat.

[0028] According to some embodiments of the present application, the first valve seat has a valve seat guide portion, the first valve core includes a valve core body and a valve core guide portion, the valve core guide portion is sleeved on the outer periphery of the valve seat guide portion, and the valve core guide portion is guided and matched with the valve seat guide portion.

[0029] According to some embodiments of the present application, a sliding sealing ring is provided at the guiding cooperation portion between the valve core guide portion and the valve seat guide portion.

[0030] According to some embodiments of the present application, the valve device further comprises a third valve assembly, wherein the third valve assembly is located on a side of the first valve assembly away from the second valve assembly, and the medium flowing out of the valve channel can flow into the pressure relief chamber through the third valve assembly.

[0031] According to some embodiments of the present application, the third valve assembly includes a third valve core and a third valve seat, the third valve seat has a pilot channel, the pilot channel is connected to the valve channel, and the third valve core can move relative to the third valve seat in a direction away from or close to the second valve assembly to connect or block the pilot channel with the pressure relief chamber.

[0032] According to some embodiments of the present application, the third valve seat is installed on the first valve seat.

[0033] According to some embodiments of the present application, the valve device has a pilot valve rear passage, and when the third valve core is separated from the third valve seat, the pilot passage is connected to the pressure relief chamber through the pilot valve rear passage.

[0034] According to some embodiments of the present application, the third valve core includes a conical portion, and the conical portion is used to block or open the pilot channel.

[0035] According to some embodiments of the present application, when the medium at the valve channel pushes the first valve component to separate from the protruding structure, a portion of the medium flowing out of the valve channel flows into the pressure relief chamber through the third valve component, and another portion flows into the pressure relief chamber through the gap between the first valve component and the protruding structure.

[0036] According to some embodiments of the present application, the pilot channel includes an axial channel and a radial channel, the third valve core is used to selectively block the axial channel, the radial channel is connected to the axial channel, and the radial channel extends radially along the third valve seat to the accommodating cavity.

[0037] According to some embodiments of the present application, the first valve core has a valve core bottom surface for fitting with the protruding structure, a valve core groove is provided on the valve core bottom surface, the protruding structure has a shell top surface for fitting with the first valve core, a shell groove is provided on the shell top surface, and the valve core groove is connected to the shell groove.

[0038] According to some embodiments of the present application, the valve device also includes an electromagnetic component, which is located on a side of the third valve component away from the second valve component, and the electromagnetic component includes a base, a coil and a moving part, the coil is installed on the base, the coil is used to drive the moving part to move, and one end of the moving part stops at the third valve component.

[0039] According to some embodiments of the present application, a pilot valve rear passage is defined between the base and the first valve seat.

[0040] According to some embodiments of the present application, the movable part includes a core shaft and a magnetic core, the magnetic core is fixedly installed on the outer periphery of the core shaft, and the electromagnetic assembly also includes a first elastic part and a second elastic part, the first elastic part stops at an end of the magnetic core away from the first valve assembly, and the second elastic part stops at an end of the magnetic core close to the first valve assembly.

[0041] The shock absorber according to the second embodiment of the present application includes the above-mentioned valve device.

[0042] According to the shock absorber of the embodiment of the present application, the valve device is integrally formed by the valve housing and an installation cavity is provided in the valve housing, so that the first valve assembly and the second valve assembly are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly and the second valve assembly through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly and the second valve assembly, thereby improving the sealing performance of the valve device. At the same time, the connecting pipeline between the first valve assembly and the second valve assembly is eliminated, so that the integration of the first valve assembly and the second valve assembly is high, and the overall volume of the valve device is small.

[0043] The suspension system according to the third aspect of the present application includes the above-mentioned shock absorber.

[0044] According to the suspension system of the embodiment of the present application, the valve device of the shock absorber is integrally formed by the valve housing and an installation cavity is provided in the valve housing, so that the first valve assembly and the second valve assembly are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly and the second valve assembly through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly and the second valve assembly, thereby improving the sealing performance of the valve device. At the same time, the connecting pipeline between the first valve assembly and the second valve assembly is eliminated, so that the integration of the first valve assembly and the second valve assembly is high, and the overall volume of the valve device is small.

[0045] The vehicle according to the fourth aspect of the present application includes the above-mentioned suspension system.

[0046] According to the vehicle of the embodiment of the present application, the valve device of the shock absorber in its suspension system is integrally formed by a valve housing and an installation cavity is provided in the valve housing, so that the first valve assembly and the second valve assembly are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly and the second valve assembly through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly and the second valve assembly, thereby improving the sealing performance of the valve device. At the same time, the connecting pipeline between the first valve assembly and the second valve assembly is eliminated, so that the integration of the first valve assembly and the second valve assembly is high, and the overall volume of the valve device is small.

[0047] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 is a cross-sectional view of a valve device according to an embodiment of the present application;

[0049] Figure 2 yes Figure 1 The local state diagram of the valve plate closed at A in the middle;

[0050] Figure 3 yes Figure 1The local state diagram of the valve plate opening at A in the middle;

[0051] Figure 4 yes Figure 1 The local state diagram of the third valve core and the first valve core at B in the middle is closed;

[0052] Figure 5 yes Figure 1 Partial state diagram of the third valve core opening and the first valve core closing at B in the middle;

[0053] Figure 6 yes Figure 1 The local state diagram of the third valve core and the first valve core at B in the middle is open;

[0054] Figure 7 is a three-dimensional schematic diagram of a second valve body according to an embodiment of the present application;

[0055] Figure 8 is a top view of a second valve body according to an embodiment of the present application;

[0056] Fig. 9 is a cross-sectional view of a second valve body according to an embodiment of the present application;

[0057] Fig.10 is a three-dimensional schematic diagram of a third valve seat and a first valve seat according to an embodiment of the present application;

[0058] Fig.11 is a cross-sectional view of a third valve seat and a first valve seat according to an embodiment of the present application;

[0059] Fig.12 is a schematic diagram of a shock absorber according to an embodiment of the present application;

[0060] Fig.13 is a schematic diagram of a suspension system according to an embodiment of the present application;

[0061] Fig.14 is a schematic diagram of a vehicle according to an embodiment of the present application.

[0062] Reference numerals:

[0063] Vehicle 1000, suspension system 100, shock absorber 20, valve device 10, valve device body 1, third valve assembly 11, third valve core 111, third valve seat 112, pilot channel 1121, axial channel 11211, radial channel 11212, pilot valve rear channel 12, first valve assembly 13, first valve core 131, throttle hole 1311, valve core body 1312, valve core guide 1313, valve core groove 1314, first valve seat 132, valve seat guide 1321, circular through hole 1322, second elastic member 133, second valve assembly 2, first channel 21, valve housing 22, Pressure relief port 221, valve channel 222, shell groove 223, protruding structure 224, first chamber 225, second valve body 23, second through hole 231, first elastic member 24, valve plate 25, pressure relief chamber 3, sliding sealing ring 41, one-way sealing ring 42, base sealing ring 43, accommodating chamber 5, electromagnetic assembly 6, base 61, coil 62, coil varnish 621, moving part 63, core shaft 631, magnetic core 632, first elastic member 64, second elastic member 65, shell 66, accommodating chamber 661, pressure plate 67, positioning bushing 68, core cover 691, magnetic isolation ring 692, locking sleeve 693. DETAILED DESCRIPTION

[0064] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0065] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] Combine the following Figure 1-Figure 14 A valve device 10, a shock absorber 20 having the valve device 10, a suspension system 100 having the shock absorber 20, and a vehicle 1000 having the suspension system 100 according to an embodiment of the present application are described in detail.

[0067] See also Figure 1As shown, the valve device 10 according to the embodiment of the present application is characterized in that it includes a valve housing 22, a first valve assembly 13 and a second valve assembly 2, a mounting cavity is formed in the valve housing 22, at least part of the first valve assembly 13 is arranged in the mounting cavity, at least part of the second valve assembly 2 is arranged in the mounting cavity, and the valve housing 22 is an integrally formed structure. Specifically, the valve housing 22 adopts an integrally formed structure, so that the overall structure of the valve housing 22 is more solid, can better achieve sealing and reduce the risk of fluid leakage, and ensure the stable operation of the valve device 10. The valve housing 22 is provided with a mounting cavity, so that the first valve assembly 13 and the second valve assembly 2 are at least partially arranged in the mounting cavity, and the fluid can flow between the first valve assembly 13 and the second valve assembly 2 through the mounting cavity. Compared with the first valve assembly 13 and the second valve assembly 2 connected by a pipeline, the present application can effectively prevent the fluid from leaking when flowing through the first valve assembly 13 and the second valve assembly 2, thereby improving the sealing performance of the valve device 10.

[0068] In the related art, in order to prevent leakage of the medium of the valve device, a separate second valve assembly is often provided. The second valve assembly is connected to the valve device through a pipeline. The second valve assembly and the valve device are arranged and installed as independent components. However, this arrangement has a low degree of integration, which not only increases the complexity and volume of the system in which the valve device is located, but also causes the overall size of the valve device and the second valve assembly to be too large, thereby increasing the difficulty of arranging the valve device and the second valve assembly. At the same time, the connection and coordination of components such as the valve device, the pipeline, and the second valve assembly will also increase the risk of leakage.

[0069] According to the valve device 10 of the embodiment of the present application, the valve housing 22 is integrally formed and an installation cavity is provided in the valve housing 22, so that the first valve assembly 13 and the second valve assembly 2 are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly 13 and the second valve assembly 2 through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly 13 and the second valve assembly 2, thereby improving the sealing performance of the valve device 10. At the same time, the connecting pipeline between the first valve assembly 13 and the second valve assembly 2 is eliminated, so that the integration of the first valve assembly 13 and the second valve assembly 2 is high, and the overall volume of the valve device 10 is small.

[0070] In some embodiments, see Figure 1As shown, the valve device 10 includes a valve device body 1, the valve device body 1 includes a first valve assembly 13 and a valve housing 22, and the second valve assembly 2 is installed on the valve device body 1. Therefore, by directly installing the second valve assembly 2 on the valve device body 1, the second valve assembly 2 and the valve device body 1 are tightly integrated, making the entire valve device 10 more compact and efficient. When the valve device 10 is applied to the suspension system 100, it is not necessary to set up a second valve assembly for the valve device 10, which simplifies the structure of the suspension system 100 and improves the integration of the suspension system 100. By integrating the second valve assembly 2 with the valve device body 1, the axial size of the valve device 10 is effectively reduced, the utilization rate of the space is improved, the difficulty of layout is reduced, and the speed of installation and debugging is accelerated.

[0071] In some embodiments of the present application, see Figure 1 As shown, a valve channel 222 is formed in the valve housing 22, and the first valve assembly 13 is connected to the second valve assembly 2 through the valve channel 222. Thus, the valve channel 222 provides a clear flow path for the fluid between the first valve assembly 13 and the second valve assembly 2. When the valve device 10 is working, the fluid can flow from the second valve assembly 2 through the valve channel 222 according to a predetermined route and smoothly reach the first valve assembly 13.

[0072] In some embodiments of the present application, see Figure 1 As shown, the second valve assembly 2 is interference-connected with the valve housing 22. Thus, the interference connection tightly combines the second valve assembly 2 with the valve housing 22, and can effectively prevent the fluid from leaking from the connection gap between the second valve assembly 2 and the valve housing 22, thereby ensuring the sealing performance of the valve device 10 and improving the fluid control performance of the entire valve device 10.

[0073] In some embodiments of the present application, see Figure 1 As shown, the second valve assembly 2 includes a second valve body 23, and the second valve body 23 is interference-connected with the valve housing 22. Thus, the second valve body 23 and the valve housing 22 are tightly combined together through the interference connection, which can effectively prevent the fluid from leaking from the connection gap between the second valve body 23 and the valve housing 22, thereby ensuring the sealing performance of the valve device 10 and improving the fluid control performance of the entire valve device 10.

[0074] In some embodiments of the present application, see Figure 1-Figure 3 As shown, the second valve body 23 has a first channel 21 therein, and the first channel 21 is connected to the first valve assembly 13 through the valve channel 222. Thus, the first channel 21 is connected to the first valve assembly 13 through the valve channel 222, which reduces additional connectors and pipelines, makes the connection between the second valve assembly 2 and the first valve assembly 13 more compact and simple, and reduces the medium leakage of the valve device 10.

[0075] In some embodiments of the present application, see Figure 1 As shown, a protruding structure 224 protruding radially away from the second valve body 23 is formed on the inner peripheral wall of the valve housing 22, and the protruding structure 224 forms a valve channel 222. In other words, the protruding structure 224 extends along the inner peripheral wall of the valve housing 22 toward the central axis of the valve device 10. Specifically, the design of the protruding structure 224 increases the wall thickness of the valve housing 22, thereby improving the overall structural strength of the valve housing 22, so that it can withstand greater pressure and load. In addition, the protruding structure 224 provides a more stable support for the valve channel 222, reduces the vibration and deformation caused by fluid pressure fluctuations, and thus improves the stability of the entire system.

[0076] In some embodiments of the present application, see Figure 1 As shown, a first chamber 225 is formed between the protruding structure 224, a part of the valve housing 22 and the second valve body 23, and the first chamber 225 is communicated with the first channel 21. Specifically, the close fit between the protruding structure 224, the valve housing 22 and the second valve body 23 forms a solid structure, improves the overall strength of the valve device 10, and enables it to withstand greater pressure and load. The first chamber 225 can optimize the flow state of the medium, reduce the scouring and wear of the medium on the valve device 10, and thus improve the durability and service life of the valve device 10.

[0077] In some embodiments of the present application, see Figure 1 As shown, the valve channel 222 is connected to the first chamber 225. Specifically, the valve channel 222 is connected to the first channel 21 through the first chamber 225. The connection between the valve channel 222 and the first chamber 225 enables the medium to pass through the valve device 10 more smoothly, reducing the eddy current and turbulence of the medium in the valve device 10, thereby improving the flow efficiency of the medium. The first chamber 225 can serve as a pressure buffer to absorb and disperse the pressure fluctuations generated by the medium during the flow process. The connection between the valve channel 222 and the first chamber 225 helps to achieve a more uniform pressure distribution and improve the stability and reliability of the valve device 10.

[0078] In some embodiments of the present application, see Figure 1 , Figure 8 , Fig. 9As shown, the second valve body 23 also has a second through hole 231, which can be communicated with the first chamber 225, the first channel 21 is suitable for connecting the first cavity of the shock absorber, and the second through hole 231 is used to connect the second cavity of the shock absorber with the first channel 21. In other words, when the medium pressure in the second through hole 231 reaches the first pressure threshold, the medium in the second through hole 231 flows out to the first cavity of the shock absorber through the first channel 21; when the medium pressure in the second through hole 231 is less than the first pressure threshold, the second through hole 231 is isolated from the first channel 21, and the medium in the first channel 21 flows into the valve device body 1.

[0079] Specifically, during the reverse oil return process, the medium in the second cavity of the shock absorber can selectively flow into the first channel 21 through the second through hole 231, and flow into the first cavity of the shock absorber from the first channel 21. In the related art, the valve device has the function of allowing the medium (for example, oil) to pass through. The valve device is connected to the chamber of the shock absorber. The oil in the shock absorber chamber can flow through the valve device. The valve device can also reversely replenish the chamber of the shock absorber. Due to the complex functions, oil leakage is prone to occur at the valve device. When the medium pressure in the second through hole 231 does not reach the first pressure threshold, the second through hole 231 is blocked, and the medium in the first channel 21 cannot flow out from the second through hole 231, which can effectively prevent the medium from leaking from the second through hole 231, and ensure that when the medium does not need to pass through the second through hole 231, the medium in the first channel 21 can be prevented from flowing back or leaking at the second through hole 231, which simplifies the processing process and reduces the processing difficulty.

[0080] In some embodiments of the present application, see Figure 1 As shown, in the radial direction of the second valve body 23, the second through hole 231 is separated from the first channel 21. The second through hole 231 is separated from the first channel 21 in the radial direction, and the arrangement is reasonable, which can make full use of the radial space of the second valve body 23 and save the axial size of the second valve body 23. At the same time, the second through hole 231 can be selectively connected or isolated from the first channel 21, ensuring that the medium can flow inside the valve device 10 according to the predetermined path and flow rate, thereby improving the accuracy and stability of medium control.

[0081] In some embodiments of the present application, see Figure 1 As shown, a plurality of second through holes 231 are provided, and the plurality of second through holes 231 are arranged at intervals around the first channel 21. Thus, the plurality of second through holes 231 are arranged at intervals around the first channel 21, so that the medium can be more evenly distributed when flowing through the valve device 10, and the local accumulation and eddy flow of the fluid medium inside the valve device 10 can be reduced, thereby improving the flow efficiency and stability of the medium. In the reverse oil return process, the oil return efficiency can be improved.

[0082] Optionally, the number of the second through holes 231 may be one, two, three or more, for example Figure 8 As shown, there are eight second through holes 231 , and the eight second through holes 231 are evenly distributed around the first channel 21 .

[0083] In some embodiments of the present application, see Figure 1-Figure 3 As shown, the second valve assembly 2 further includes a valve plate 25, which can block or open the second through hole 231 to connect or disconnect the second cavity of the shock absorber and the first channel 21. Specifically, the valve plate 25 can block or open the second through hole 231 as needed, thereby achieving precise control of the flow of the medium inside the valve device 10.

[0084] In some embodiments of the present application, see Figure 1 As shown, the second valve assembly 2 further includes a first elastic member 24 . The first elastic member 24 is disposed in the first chamber 225 . The first elastic member 24 is used to apply an elastic force to the valve plate 25 toward the second valve body 23 .

[0085] In other words, the first elastic member 24 is used to apply an elastic force toward the second valve body 23 to the valve disc 25 to drive the valve disc 25 to block the second through hole 231. When the medium pressure in the second through hole 231 reaches the first pressure threshold, the medium in the second through hole 231 pushes the valve disc 25 to separate from the second valve body 23. When the medium pressure in the second through hole 231 reaches the first pressure threshold, the medium can push the valve disc 25 to move upward, and the valve disc 25 is separated from the second valve body 23, so that the medium can reach the first channel 21 from the second through hole 231. When the medium pressure in the second through hole 231 decreases to less than the first pressure threshold, the pressure of the medium in the second through hole 231 on the valve disc 25 is less than the elastic force of the first elastic member 24 on the valve disc 25, and the first elastic member 24 drives the valve disc 25 to block the second through hole 231 again.

[0086] Specifically, a first channel 21 is formed inside the second valve body 23, and the first elastic member 24 applies an elastic force to the valve plate 25 toward the second valve body 23, so that the valve plate 25 blocks the second through hole 231 under normal conditions (i.e., when the medium pressure in the second through hole 231 is less than the first pressure threshold), effectively preventing the medium from leaking from the second through hole 231, and ensuring that the medium flows in a specified direction. Figure 2 The medium flow path a helps protect the system from reverse pressure and fluid backflow, thereby improving the stability and reliability of the entire system.

[0087] It should be noted that the above “the first elastic member 24 is used to apply an elastic force to the valve plate 25 toward the second valve body 23” means referring to Figure 1 As shown, the first elastic member 24 is used to apply a downward elastic force to the valve plate 25 .

[0088] Optionally, the first elastic member 24 may be a wave spring, a spring, etc., for example Figure 1 As shown, the first elastic member 24 is a wave spring.

[0089] In some embodiments of the present application, see Figure 1 As shown, the valve plate 25 is an annular structure, and the hollow part of the valve plate 25 is suitable for communicating with the first channel 21. Therefore, the medium can flow between the first channel 21 and the first chamber 225 through the hollow part of the valve plate 25.

[0090] In some embodiments of the present application, see Figure 1 As shown, the valve housing 22 is provided with a pressure relief port 221, which is suitable for connecting with the second cavity of the shock absorber, and a pressure relief chamber 3 is enclosed between the first valve assembly 13 and part of the valve housing 22, and the pressure relief chamber 3 is connected with the pressure relief port 221. Therefore, the medium can flow from the pressure relief chamber 3 into the second cavity of the shock absorber through the pressure relief port 221.

[0091] In some embodiments, the number of the pressure relief ports 221 may be one, two, three, or more. For example, the number of the pressure relief ports 221 may be six.

[0092] In some embodiments, Figure 1 As shown, the second valve assembly 2 also has a one-way sealing ring 42, which is sleeved on the outer wall of the second valve body 23. When the valve device 10 is installed on other components, the one-way sealing ring 42 fits against the inner wall of the component to seal the fitting between the second valve body 23 and the component.

[0093] In some embodiments of the present application, see Figure 1 As shown, the first valve assembly 13 includes: a first valve core 131 and a first valve seat 132, the first valve core 131 is formed with an accommodating cavity 5, the first valve seat 132 is connected to the first valve core 131 and the first valve seat 132 is at least partially disposed in the accommodating cavity 5. Specifically, the cooperation between the first valve core 131 and the first valve seat 132 can achieve precise medium control. By adjusting the position or shape of the first valve core 131, the flow, pressure or direction of the medium can be changed to meet specific control requirements.

[0094] In some embodiments of the present application, see Figure 1As shown, the first valve core 131 is located at one end of the first valve seat 132 facing the second valve assembly 2, and the first valve core 131 can move relative to the first valve seat 132 in a direction close to or away from the second valve assembly 2, and the pressure relief chamber 3 is formed between the first valve seat 132 and the valve housing 22. In other words, the first valve core 131 is located at the lower end of the first valve seat 132, and the first valve core 131 can move relative to the first valve seat 132 in the up and down directions. Specifically, by adjusting the positional relationship between the first valve core 131 and the first valve seat 132, the flow rate of the medium can be accurately controlled. When the first valve core 131 is close to the first valve seat 132, the gap between the protruding structure 224 and the first valve core 131 becomes wider, and the flow rate of the medium entering the pressure relief chamber 3 through the gap between the protruding structure 224 and the first valve core 131 increases; conversely, when the first valve core 131 is away from the first valve seat 132, the gap between the protruding structure 224 and the first valve core 131 becomes narrower, and the flow rate of the medium entering the pressure relief chamber 3 through the gap between the protruding structure 224 and the first valve core 131 decreases.

[0095] In some embodiments of the present application, see Figure 1 As shown, a throttle hole 1311 is provided on the first valve core 131, and the valve channel 222 is connected to the accommodating chamber 5 through the throttle hole 1311. Specifically, the throttle hole 1311 can control the flow rate and pressure of the medium entering the accommodating chamber 5 from the valve channel 222. By adjusting the size of the throttle hole 1311, the flow rate and pressure of the medium entering the accommodating chamber 5 can be finely adjusted to meet the needs under different working conditions.

[0096] In some embodiments of the present application, see Figure 1 As shown, the axis of the throttle hole 1311 and the axis of the first valve core 131 are located on the same straight line. As a result, the throttle hole 1311 is located at the center of the first valve core 131, so that when the medium flows through the throttle hole 1311, its flow path is more stable, so that the flow rate of the medium can be more accurately controlled, the uniformity of the flow field in the first valve assembly 13 is ensured, the lateral force on the first valve core 131 during movement is reduced, the risk of the first valve core 131 being stuck is reduced, and the stability of the first valve assembly 13 is improved. The axis of the throttle hole 1311 and the axis of the first valve core 131 are located on the same straight line, which makes the structure of the first valve assembly 13 more compact, helps to reduce the resistance encountered by the medium when flowing through the throttle hole 1311, thereby improving the flow coefficient of the first valve core 131.

[0097] In some embodiments of the present application, see Figure 1 , Figure 4-Figure 6As shown, the first valve assembly 13 further includes a second elastic member 133, which is disposed in the accommodating cavity 5. In the axial direction of the first valve core 131, one end of the second elastic member 133 is connected to the first valve core 131, and the other end of the second elastic member 133 is connected to the first valve seat 132. Specifically, the second elastic member 133 abuts against the first valve core 131 and the first valve seat 132, and the second elastic member 133 provides elastic force for the first valve core 131, so that the first valve core 131 and the first valve seat 132 always keep away from each other.

[0098] Optionally, the second elastic member 133 may be a spring, a wave spring, etc., for example Figure 1 As shown, the second elastic member 133 is a spring.

[0099] In some embodiments of the present application, see Figure 1 , Figure 4-Figure 6 As shown, the first valve seat 132 has a valve seat guide 1321, the first valve core 131 includes a valve core body 1312 and a valve core guide 1313, the throttle hole 1311 is arranged on the valve core body 1312, the valve core guide 1313 is sleeved on the outer periphery of the valve seat guide 1321, and the valve core guide 1313 is guided and matched with the valve seat guide 1321. Thus, the valve core guide 1313 and the valve seat guide 1321 are guided and matched, and this design reduces the shaking and deviation of the first valve core 131, improves the stability and accuracy of the first valve core 131 during the movement, and thus improves the overall stability and reliability of the first valve assembly 13.

[0100] In some embodiments of the present application, see Figure 1 , Figure 4-Figure 6 As shown, a sliding seal ring 41 is provided at the guide matching position of the valve core guide portion 1313 and the valve seat guide portion 1321. Therefore, the provision of the sliding seal ring 41 significantly enhances the sealing effect between the first valve core 131 and the first valve seat 132. The sliding seal ring 41 can be tightly attached to the matching surface of the valve core guide portion 1313 and the valve seat guide portion 1321, effectively preventing medium leakage, and ensuring the stable operation of the valve device 10. The sliding seal ring 41 also guides the first valve core 131. The sliding seal ring 41 can effectively increase the sliding damping to suppress the flutter of the first valve core 131 after opening.

[0101] In some embodiments of the present application, see Figure 1 , Figure 4-Figure 6As shown, the valve device 10 further includes a third valve assembly 11, which is located on a side of the first valve assembly 13 away from the second valve assembly 2, and the medium flowing out of the valve channel 222 can flow into the pressure relief chamber 3 through the third valve assembly 11. Specifically, when the medium pressure at the valve channel 222 reaches the third pressure threshold, the thrust of the medium on the first valve core 131 is greater than the elastic force of the second elastic member 133 on the first valve core 131, and the medium will push the first valve core 131 to move upward. At this time, a part of the medium can directly flow into the pressure relief chamber 3 through the gap between the first valve core 131 and the valve housing 22, and flow out through the pressure relief port 221, and another part of the medium flows into the pressure relief chamber 3 through the third valve assembly 11, and flows out through the pressure relief port 221. When the medium pressure at the valve channel 222 reaches the second pressure threshold and is lower than the third pressure threshold, the second elastic member 133 will push the first valve core 131 to move downward until the first valve core 131 stops at the valve housing 22. At this time, the medium at the valve channel 222 can only flow into the accommodating chamber 5 through the throttle hole 1311, and then flow into the pressure relief chamber 3 through the third valve assembly 11. When the medium pressure at the valve channel 222 is lower than the second pressure threshold, the medium at the valve channel 222 cannot flow into the pressure relief chamber 3.

[0102] In some embodiments of the present application, see Figure 1 , Figure 4 , Figure 5 As shown, the third valve assembly 11 includes a third valve core 111 and a third valve seat 112. The third valve seat 112 has a pilot channel 1121, which is connected to the valve channel 222. The third valve core 111 can move relative to the third valve seat 112 in a direction away from or close to the second valve assembly 2 to connect or block the pilot channel 1121 and the pressure relief chamber 3. In other words, the third valve core 111 can contact the third valve seat 112 to cut off the pilot channel 1121 and the pressure relief chamber 3. The third valve core 111 can also be separated from the third valve seat 112 to connect the pilot channel 1121 and the pressure relief chamber 3. When the medium pressure at the valve channel 222 reaches the second pressure threshold and is less than the third pressure threshold, the medium flowing out of the valve channel 222 pushes the third valve core 111 to separate from the third valve seat 112.

[0103] Specifically, the pilot channel 1121 is isolated from the pressure relief chamber 3 by the contact control of the third valve core 111 and the third valve seat 112, and the connection between the pilot channel 1121 and the pressure relief chamber 3 is controlled by the separation of the third valve core 111 and the third valve seat 112. When the pilot channel 1121 is connected to the pressure relief chamber 3, the medium at the valve channel 222 can be transported to the pressure relief chamber 3, thereby achieving the purpose of controlling the flow of the medium through the third valve assembly 11. When the medium pressure at the valve channel 222 reaches the second pressure threshold value and is less than the third pressure threshold value, the medium in the valve channel 222 pushes the third valve core 111 to separate from the third valve seat 112, thereby achieving the flow of the medium from the valve channel 222 to the pressure relief chamber 3 through the pilot channel 1121, which plays a role in automatically adjusting the pressure of the valve device 10, preventing the overpressure phenomenon of the valve device 10, and protecting the safety of the entire valve device 10.

[0104] In some embodiments of the present application, see Figure 1 As shown, the third valve seat 112 is installed on the first valve seat 132. Specifically, the third valve seat 112 is installed on the first valve seat 132, which realizes the integration and modularization of the valve device 10, facilitates the assembly, commissioning and maintenance of the valve device 10, and improves the maintainability and scalability of the system.

[0105] In addition, the pilot channel 1121 is opened on the third valve seat 112 instead of the first valve seat 132 , which simplifies the structure of the first valve seat 132 .

[0106] In some embodiments of the present application, see Figure 1 As shown, the valve device 10 has a pilot valve rear passage 12. When the third valve core 111 is separated from the third valve seat 112, the pilot passage 1121 is connected to the pressure relief chamber 3 through the pilot valve rear passage 12. Therefore, through the design of the pilot valve rear passage 12, the medium flows from the pilot passage 1121 through the pilot valve rear passage 12 and directly reaches the pressure relief chamber 3. Figure 5 As shown in the paths f and g in FIG. 1 , the structure of the valve device 10 is simplified and the working efficiency of the valve device 10 is improved. Moreover, the pressure relief chamber 3 can be arranged at a suitable position without being very close to the pilot channel 1121. It is only necessary to connect the pressure relief chamber 3 with the pilot channel 1121 through the pilot valve rear channel 12, thereby realizing a reasonable design of the position of the pressure relief chamber 3.

[0107] In some embodiments of the present application, see Figure 1As shown, the third valve core 111 includes a conical portion, which is used to block or open the pilot channel 1121. Therefore, the conical setting of the third valve core 111 can effectively compensate for the hydraulic force of the third valve assembly 11, accelerate the opening speed of the third valve assembly 11, and improve the response time. The small diameter end of the conical portion faces the pilot channel 1121, and the large diameter end of the conical portion is away from the pilot channel 1121, thereby facilitating the third valve core 111 to block or open the pilot channel 1121.

[0108] In some embodiments of the present application, see Figure 1 , Figure 5 , Figure 6 As shown, when the medium in the valve channel 222 pushes the first valve component 13 to separate from the protruding structure 224, a portion of the medium flowing out of the valve channel 222 flows into the pressure relief chamber 3 through the third valve component 11, and the other portion flows into the pressure relief chamber 3 through the gap between the first valve component 13 and the protruding structure 224. Specifically, when the pressure in the valve channel 222 reaches a preset third pressure threshold, the medium in the valve channel 222 pushes the first valve core 131 to move upward. At this time, the valve channel 222 is connected to the pressure relief chamber 3, and a part of the medium flows into the pressure relief chamber 3 through the third valve assembly 11, and the other part of the medium flows into the pressure relief chamber 3 through the gap between the first valve assembly 13 and the protruding structure 224. This pressure relief mechanism can more accurately control the pressure in the valve channel 222 to prevent the valve device 10 from being over-pressurized. When the medium pressure in the valve channel 222 is too high, the first valve assembly 13 can be opened in time to release excess pressure to achieve the purpose of rapid pressure relief, which helps to maintain the stability of the valve device 10 and prevent the valve device 10 from being damaged due to excessive pressure, reducing the failure and downtime of the valve device 10, and can quickly respond to pressure changes, reduce the impact of pressure shocks on the valve device 10, and improve the stability and reliability of the valve device 10.

[0109] In some embodiments of the present application, see Figure 1 , Figure 4-Figure 6As shown, the pilot channel 1121 includes an axial channel 11211 and a radial channel 11212, the third valve core 111 is used to selectively block the axial channel 11211, the radial channel 11212 is connected to the axial channel 11211, and the radial channel 11212 extends to the accommodating chamber 5 along the radial direction of the third valve seat 112. In other words, the medium can reach the radial channel 11212 through the accommodating chamber 5, and from the radial channel 11212 to the axial channel 11211, when the pressure of the medium in the axial channel 11211 does not reach the second pressure threshold, the third valve core 111 blocks the axial channel 11211, and when the pressure of the medium in the axial channel 11211 reaches the second pressure threshold, the third valve core 111 opens the axial channel 11211, and at this time the medium can flow through the axial channel 11211 through the pilot valve rear channel 12 to the pressure relief chamber 3. Thus, the radial channel 11212 and the axial channel 11211 are provided to improve the flow flexibility of the medium, and by optimizing the flow path of the medium, the stability of the medium in the flow process is improved, which helps to reduce the fluctuation and vibration of the medium in the flow process, and reduce noise and wear. The provision of the radial channel 11212 reduces the axial dimension of the valve device 10, and the axial channel 11211 and the radial channel 11212 are formed in the third valve seat 112, and the third valve seat 112 is press-fitted on the first valve seat 132, which reduces the processing steps and reduces the processing difficulty.

[0110] Optionally, the radial channels 11212 may be one, two, three or more. For example, the radial channels 11212 may be four and distributed in an annular shape.

[0111] It should be noted that the above “radial channel 11212 extends along the radial direction of the third valve seat 112 to the accommodating chamber 5” means that Figure 1 As shown, the radial channel 11212 extends radially outwardly from the third valve seat 112 to communicate with the accommodating chamber 5. Specifically, it can be shown as follows: Figure 1 The radial channel 11212 on the left side extends to the left along the radial direction of the third valve seat 112 until it is communicated with the accommodating chamber 5, and the radial channel 11212 on the right side extends to the right along the radial direction of the third valve seat 112 until it is communicated with the accommodating chamber 5. Of course, the radial channel 11212 is not only Figure 1 Two are shown in the figure, and the others are not listed one by one.

[0112] In some embodiments, the circumferentially evenly distributed radial channels 11212 and the throttling hole 1311 located at the center of the first valve core 131 ensure the symmetry of the flow channel, reduce the lateral force of the movement of the first valve core 131, and improve the movement stability of the first valve core 131.

[0113] In some embodiments of the present application, see Figure 1As shown, the first valve core 131 has a valve core bottom surface for fitting with the protruding structure 224, a valve core groove 1314 is provided on the valve core bottom surface, the protruding structure 224 has a shell top surface for fitting with the first valve core 131, a shell groove 223 is provided on the shell top surface, and the valve core groove 1314 is connected with the shell groove 223. Specifically, the valve core groove 1314 and the shell groove 223 form a negative force window, when the medium passes through the first valve core 131, a steady-state fluid force acting on the first valve core 131 will be generated due to the change in momentum, at this time, the negative force window will generate a force in the opposite direction to the steady-state fluid force, compensate for the influence of the steady-state fluid force, and improve the operating performance of the first valve core 131.

[0114] In some embodiments of the present application, see Figure 1 As shown, the valve device 10 also includes an electromagnetic component 6, which is located on the side of the third valve component 11 away from the second valve component 2. The electromagnetic component 6 includes a base 61, a coil 62 and a moving member 63. The coil 62 is installed on the base 61. The coil 62 is used to drive the moving member 63 to move, and one end of the moving member 63 stops at the third valve component 11. Specifically, the coil 62 is installed on the base 61. When the coil 62 is energized, an electromagnetic force is generated, and the electromagnetic force drives the moving member 63 to move, thereby affecting the pressure of the moving member 63 on the third valve component 11. Changing the current intensity of the coil 62 can accurately adjust the size of the electromagnetic force and the pressure of the moving member 63 on the third valve component 11, so that the size of the second pressure threshold can be adjusted. This pressure adjustment capability enables the valve device 10 to adapt to a variety of different application scenarios.

[0115] It should be noted that the above “the electromagnetic assembly 6 is located on the side of the third valve assembly 11 away from the second valve assembly 2” means that Figure 1 As shown, the electromagnetic assembly 6 is located above the third valve assembly 11 .

[0116] In some embodiments, see Figure 1 As shown, the electromagnetic assembly 6 also includes a base sealing ring 43, which is sleeved on the outer wall of the base 61. When the valve device 10 is installed on other components, the base sealing ring 43 fits against the inner wall of the component to seal the fitting between the base 61 and the component.

[0117] In some embodiments of the present application, see Figure 1 As shown, the pilot valve rear passage 12 is defined between the base 61 and the first valve seat 132. Thus, the pilot valve rear passage 12 is formed by the cooperation between the base 61 and the first valve seat 132, which reduces the difficulty of processing and installing the valve device 10.

[0118] In some embodiments, see Figure 1 , Fig.10 , Fig.11 As shown, the first valve seat 132 has a circular through hole 1322 and a rectangular flow channel, one end of the circular through hole 1322 is connected to the pilot valve rear channel 12, the other end of the circular through hole 1322 is connected to the pressure relief chamber 3, the rectangular flow channel is connected to the circular through hole 1322, and the rectangular flow channel and the base 61 form the pilot valve rear channel 12. Therefore, the medium can enter the circular through hole 1322 through the pilot valve rear channel 12, then flow into the pressure relief chamber 3 through the circular through hole 1322, and finally flow out of the valve device 10 through the pressure relief port 221. The setting of the rectangular flow channel reduces the difficulty of processing.

[0119] In some embodiments, the pilot valve rear passage 12 is a rectangular slit flow channel.

[0120] In some embodiments of the present application, see Figure 1 As shown, the moving member 63 includes a core shaft 631 and a magnetic core 632, wherein the magnetic core 632 is fixedly mounted on the outer periphery of the core shaft 631, and the electromagnetic assembly 6 also includes a first elastic member 64 and a second elastic member 65, wherein the first elastic member 64 stops at one end of the magnetic core 632 away from the first valve assembly 13, and the second elastic member 65 stops at one end of the magnetic core 632 close to the first valve assembly 13. Specifically, when the coil 62 is energized, the electromagnetic force drives the magnetic core 632 to move, and the magnetic core 632 drives the core shaft 631 to move, so that the entire moving member 63 moves, thereby changing the opening state of the third valve assembly 11, and when the coil 62 is de-energized, the first elastic member 64 and the second elastic member 65 work together to push the magnetic core 632 to reset, and the magnetic core 632 drives the core shaft 631 to reset, thereby changing the force of the core shaft 631 on the third valve core 111. The arrangement of the first elastic member 64 and the second elastic member 65 also provides a double elastic support for the magnetic core 632, so that the magnetic core 632 can remain stable when subjected to the electromagnetic force, and is not prone to deviation or shaking, thereby improving the control accuracy and stability of the valve device 10. The clearance fit between the core shaft 631 and the third valve core 111 can act as a damping function to suppress the vibration of the third valve core 111 during the opening process, and the core shaft 631 acts as a guide structure to limit the non-axial movement of the third valve core 111, thereby improving the stability of the valve device 10.

[0121] It should be noted that the above statement “the first elastic member 64 abuts against the end of the magnetic core 632 away from the first valve assembly 13, and the second elastic member 65 abuts against the end of the magnetic core 632 close to the first valve assembly 13” means that, Figure 1 As shown, the first elastic member 64 abuts against the upper end of the magnetic core 632 , and the second elastic member 65 abuts against the lower end of the magnetic core 632 .

[0122] In some embodiments of the present application, see Figure 1As shown, the electromagnetic assembly 6 also includes a shell 66 and a pressing plate 67, the pressing plate 67 is connected to the shell 66, the shell 66 is connected to the base 61, a receiving cavity 661 is formed inside the shell 66, the coil 62 is located in the receiving cavity 661, and the pressing plate 67 presses the coil 62 against the base 61. Specifically, the shell 66, as the main supporting structure of the electromagnetic assembly 6, provides a safe and closed working environment for the internal coil 62, the moving part 63, etc., avoiding interference and damage from the external environment, and the close connection between the shell 66 and the pressing plate 67 and the pressing effect of the pressing plate 67 on the coil 62, together enhance the structural stability of the entire electromagnetic assembly 6.

[0123] In some embodiments of the present application, see Figure 1 As shown, the electromagnetic assembly 6 also includes a coil coating 621, a positioning bushing 68, a core cover 691, a magnetic isolation ring 692 and a locking sleeve 693. The coil coating 621 is wrapped around the outer wall of the coil 62, a positioning bushing 68 stops at the upper end of the first elastic member 64, and another positioning bushing 68 stops at the lower end of the second elastic member 65. The inner wall of the core cover 691 is sleeved on the outer wall of the magnetic core 632. The upper end of the magnetic isolation ring 692 stops at the core cover 691, the right end of the magnetic isolation ring 692 stops at the magnetic core 632, and the left end of the magnetic isolation ring 692 stops at the coil coating 621. Specifically, the coil coating 621 plays a good role in protection and insulation, and the positioning bushing 68 enables the core shaft 631 to be accurately positioned and supported, maintaining the stability and consistency of the internal structure of the electromagnetic assembly 6. The core cover 691 provides a closed and stable magnetic field environment for the magnetic core 632, and the magnetic isolation ring 692 effectively isolates the magnetic field interference. Through the close matching and layout of the above elements, the overall structure of the electromagnetic assembly 6 is more compact and stable, thereby improving the reliability and durability of the electromagnetic assembly 6.

[0124] In some embodiments, the magnetic core 632 and the core shaft 631 are made of soft magnetic materials, are magnetized in the coil 62, and are in the same direction as the magnetic field of the coil 62, thereby generating an axial electromagnetic force. The magnetic isolation ring 692 divides the magnetic flux circuit into two circuits along the axial working air gap and the radial working air gap. The electromagnetic forces formed by the two circuits of the axial working air gap and the radial working air gap are superimposed to obtain a constant output resultant force within the working stroke of the magnetic core 632, which together with the first elastic member 64 and the second elastic member 65 determines the axial movement of the core shaft 631. When the third valve assembly 11 is working, the lower end surface of the core shaft 631 will stop against the third valve core 111, and the axial force acting on the third valve core 111 affects the second pressure threshold of the opening of the third valve assembly 11, thereby affecting the medium pressure of the accommodating chamber 5, and finally affecting the third pressure threshold of the opening of the first valve core 131, changing the pressure flow characteristics of the valve device 10. Different working currents of the valve device 10 can control the electromagnetic force on the core shaft 631. The electromagnetic force is greater under high current conditions. The third pressure threshold for opening the first valve core 131 is different under different electromagnetic forces, thereby realizing the regulation of the pressure flow characteristics of the valve device 10. The pressure flow characteristics of the valve device 10 affect the damping force speed characteristics of the shock absorber. Different currents in the valve device 10 can realize continuous control of the damping of the shock absorber, thereby improving comfort and stability.

[0125] In some embodiments, the core shaft 631 is in clearance fit with the third valve core 111. Under the action of the first elastic member 64 and the second elastic member 65, the magnetic core 632 is initially in a balanced position. Therefore, when the current is 0, the second pressure threshold for opening the third valve assembly 11 is the smallest, which is the zero current softest mode. At this time, the shock absorber damping is also the smallest. As the current of the valve device 10 increases, the shock absorber damping also increases. The variable and controllable shock absorber damping combined with the electronic control unit and sensor and other sensing units that can output different currents can realize real-time control of the hardness and softness of the suspension under different road conditions, and comprehensively improve the ride comfort and controllability of the vehicle 1000.

[0126] In some embodiments of the present application, see Figure 1 As shown, when the medium pressure at the valve channel 222 reaches the second pressure threshold and is less than the third pressure threshold, the first valve core 131 fits with the protruding structure 224 of the valve housing 22, and the medium flow path is as shown in FIG. Figure 5 As shown in the paths f and g in FIG. 2 ; when the medium pressure at the valve channel 222 reaches the third pressure threshold, the medium flowing out of the valve channel 222 pushes the first valve core 131 and the protruding structure 224 to separate, and the valve channel 222 is connected to the pressure relief chamber 3 through the gap between the first valve core 131 and the protruding structure 224. The medium flow path is as shown in FIG. Figure 6As shown in the paths f, g, h and i in FIG, a part of the medium flows into the pressure relief chamber 3 through the third valve assembly 11, and another part of the medium flows into the pressure relief chamber 3 through the gap between the first valve assembly 13 and the protruding structure 224, and the medium in the pressure relief chamber 3 flows into the second cavity of the shock absorber through the pressure relief port 221. Thus, by setting the second pressure threshold and the third pressure threshold, the segmented control of the medium pressure is achieved, thereby accurately controlling the pressure of the medium in the valve device 10. When the medium pressure in the valve device 10 is too high and reaches the third pressure threshold, the first valve assembly 13 can respond quickly to discharge the excess medium, prevent the medium in the valve device 10 from overpressure, help prevent the valve device 10 from malfunctioning, and increase the service life of the valve device 10.

[0127] In some embodiments, see Figure 1-Figure 6 As shown, when the medium pressure in the second through hole 231 does not reach the first pressure threshold, Figure 2 As shown in the medium flow path a, the medium in the first cavity enters the first channel 21 and enters the valve device body 1 through the first channel 21. The first elastic member 24 provides a downward elastic force to the valve plate 25, so that the valve plate 25 stops on the upper surface of the second valve body 23. The medium in the first channel 21 cannot flow out through the second through hole 231 of the second valve body 23. The medium flows from the first channel 21 into the valve channel 222 through the valve hole on the valve plate 25.

[0128] During the reverse oil replenishment process of the valve device 10, the medium in the second cavity of the shock absorber enters the second through hole 231. When the medium pressure in the second through hole 231 reaches the first pressure threshold, Figure 3 As shown in the medium flow paths b and c, the medium in the second through hole 231 will push open the valve plate 25 and enter the first channel 21 from the second through hole 231 to achieve reverse oil replenishment of the shock absorber 20.

[0129] When the valve device 10 is working normally, when the medium pressure at the valve channel 222 does not reach the second pressure threshold, Figure 4 As shown in the medium flow paths d and e, the medium at the valve channel 222 enters the accommodating chamber 5 through the throttle hole 1311 and flows into the axial channel 11211 through the circumferentially distributed radial channels 11212. At this time, the moving member 63 provides downward pressure for the third valve core 111, so that the third valve core 111 stops against the third valve seat 112, and the medium cannot pass through the third valve core 111. When the medium pressure of the valve channel 222 reaches the second pressure threshold but does not reach the third pressure threshold, Figure 5As shown in the medium flow paths f and g, the medium in the axial channel 11211 pushes the third valve core 111 to move upward, so that a gap appears between the third valve core 111 and the third valve seat 112. The medium in the axial channel 11211 enters the pilot valve rear channel 12 through the gap between the third valve core 111 and the third valve seat 112, and enters the pressure relief chamber 3 through the circular through hole 1322, and finally flows into the second chamber of the shock absorber through the six pressure relief ports 221. When the medium pressure in the valve channel 222 reaches the third pressure threshold, the pressure relief chamber 3 is lowered. Figure 6 As shown in the medium flow paths f, g, h and i, the medium at the valve channel 222 pushes the first valve core 131 to move upward, so that a gap appears between the first valve core 131 and the protruding structure 224 of the valve housing 22. A part of the medium enters the pressure relief chamber 3 through the gap between the first valve core 131 and the valve housing 22, and finally flows into the second cavity of the shock absorber through the six pressure relief ports 221. The medium flow path is shown in the paths h and i. At this time, the flow area becomes larger than when the first valve core 131 is not opened, so that rapid pressure relief is achieved. At the same time, another part of the medium flows out of the valve device 10 through the medium flow paths f and g. The medium flow paths f, g and the medium flow paths h, i form a parallel circuit, but since the flow resistance after the first valve core 131 is opened is small, most of the medium flows out from the medium flow paths h, i.

[0130] In some embodiments of the present application, the second pressure threshold is less than the third pressure threshold.

[0131] In some embodiments of the present application, the first pressure threshold < the second pressure threshold < the third pressure threshold.

[0132] The shock absorber 20 according to the second embodiment of the present application includes the above-mentioned valve device 10.

[0133] According to the shock absorber 20 of the embodiment of the present application, the valve device 10 thereof is integrally formed by the valve housing 22 and an installation cavity is provided in the valve housing 22, so that the first valve assembly 13 and the second valve assembly 2 are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly 13 and the second valve assembly 2 through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly 13 and the second valve assembly 2, thereby improving the sealing performance of the valve device 10. At the same time, the connecting pipeline between the first valve assembly 13 and the second valve assembly 2 is eliminated, so that the integration of the first valve assembly 13 and the second valve assembly 2 is high, and the overall volume of the valve device 10 is small.

[0134] The suspension system 100 according to the third aspect of the present application includes the shock absorber 20 mentioned above.

[0135] According to the suspension system 100 of the embodiment of the present application, the valve device 10 of the shock absorber 20 is integrally formed by the valve housing 22 and an installation cavity is provided in the valve housing 22, so that the first valve assembly 13 and the second valve assembly 2 are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly 13 and the second valve assembly 2 through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly 13 and the second valve assembly 2, thereby improving the sealing performance of the valve device 10. At the same time, the connecting pipeline between the first valve assembly 13 and the second valve assembly 2 is eliminated, so that the integration of the first valve assembly 13 and the second valve assembly 2 is high, and the overall volume of the valve device 10 is small.

[0136] The vehicle 1000 according to the fourth aspect of the present application includes the above-mentioned suspension system 100.

[0137] According to the vehicle 1000 of the embodiment of the present application, the valve device 10 of the shock absorber 20 in the suspension system 100 thereof is integrally formed by the valve housing 22 and an installation cavity is provided in the valve housing 22, so that the first valve assembly 13 and the second valve assembly 2 are at least partially arranged in the installation cavity, and the fluid can flow between the first valve assembly 13 and the second valve assembly 2 through the installation cavity, which can effectively prevent the fluid from leaking when flowing through the first valve assembly 13 and the second valve assembly 2, thereby improving the sealing performance of the valve device 10. At the same time, the connecting pipeline between the first valve assembly 13 and the second valve assembly 2 is eliminated, so that the integration of the first valve assembly 13 and the second valve assembly 2 is high, and the overall volume of the valve device 10 is small.

[0138] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0139] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0140] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0141] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A valve device (10), characterized in that: include: A valve housing (22), wherein a mounting cavity is formed in the valve housing (22); A first valve assembly (13), at least a portion of which is disposed in the mounting cavity; A second valve assembly (2), at least a portion of which is disposed in the mounting cavity; The valve housing (22) is an integrally formed structure.

2. The valve device (10) according to claim 1, characterized in that A valve channel (222) is formed in the valve housing (22), and the first valve assembly (13) and the second valve assembly (2) are in communication with each other through the valve channel (222).

3. The valve device (10) according to claim 2, characterized in that The second valve assembly (2) is interference-connected with the valve housing (22).

4. The valve device (10) according to claim 3, characterized in that The second valve assembly (2) comprises a second valve body (23), and the second valve body (23) is interference-connected with the valve housing (22).

5. The valve device (10) according to claim 4, characterized in that The second valve body (23) has a first channel (21) therein, and the first channel (21) is connected to the first valve assembly (13) through the valve channel (222).

6. The valve device (10) according to claim 5, characterized in that A protruding structure (224) protruding radially away from the second valve body (23) is formed on the inner peripheral wall of the valve housing (22), and the protruding structure (224) forms the valve channel (222).

7. The valve device (10) according to claim 6, characterized in that A first chamber (225) is formed between the protruding structure (224), a portion of the valve housing (22) and the second valve body (23), and the first chamber (225) is in communication with the first channel (21).

8. The valve device (10) according to claim 7, characterized in that The valve channel (222) is in communication with the first chamber (225).

9. The valve device (10) according to claim 7, characterized in that The second valve body (23) also has a second through hole (231), and the second through hole (231) can be in communication with the first chamber (225). The first channel (21) is suitable for connecting to the first cavity of the shock absorber, and the second through hole (231) is used to connect the second cavity of the shock absorber with the first channel (21).

10. The valve device (10) according to claim 9, characterized in that In the radial direction of the second valve body (23), the second through hole (231) is separated from the first channel (21).

11. The valve device (10) according to claim 10, characterized in that A plurality of the second through holes (231) are provided, and the plurality of the second through holes (231) are arranged at intervals around the first channel (21).

12. The valve device (10) according to claim 9, characterized in that The second valve assembly (2) further comprises a valve plate (25), wherein the valve plate (25) is capable of blocking or opening the second through hole (231) so as to connect or disconnect the second cavity of the shock absorber and the first channel (21).

13. The valve device (10) according to claim 12, characterized in that The second valve assembly (2) further comprises a first elastic member (24), wherein the first elastic member (24) is arranged in the first chamber (225), and the first elastic member (24) is used to apply an elastic force to the valve plate (25) toward the second valve body (23).

14. The valve device (10) according to claim 12, characterized in that The valve plate (25) is an annular structure, and the hollow portion of the valve plate (25) is suitable for communicating with the first channel (21).

15. The valve device (10) according to claim 6, characterized in that The valve housing (22) is provided with a pressure relief port (221), and the pressure relief port (221) is suitable for connecting to the second cavity of the shock absorber. A pressure relief chamber (3) is enclosed between the first valve assembly (13) and a part of the valve housing (22), and the pressure relief chamber (3) is communicated with the pressure relief port (221).

16. The valve device (10) according to claim 15, characterized in that The first valve assembly (13) comprises: a first valve core (131) and a first valve seat (132); the first valve core (131) forms a receiving cavity (5); the first valve seat (132) is connected to the first valve core (131) and the first valve seat (132) is at least partially disposed in the receiving cavity (5).

17. The valve device (10) according to claim 16, characterized in that The first valve core (131) is located at one end of the first valve seat (132) facing the second valve assembly (2), and the first valve core (131) can move relative to the first valve seat (132) in a direction approaching or moving away from the second valve assembly (2), and the pressure relief chamber (3) is formed between the first valve seat (132) and the valve housing (22).

18. The valve device (10) according to claim 16, characterized in that The first valve core (131) is provided with a throttle hole (1311), and the valve channel (222) is connected to the accommodating chamber (5) through the throttle hole (1311).

19. The valve device (10) according to claim 18, characterized in that The axis of the throttling hole (1311) and the axis of the first valve core (131) are located on the same straight line.

20. The valve device (10) according to claim 16, characterized in that The first valve assembly (13) also includes a second elastic member (133), which is arranged in the accommodating cavity (5), and in the axial direction of the first valve core (131), one end of the second elastic member (133) is connected to the first valve core (131), and the other end of the second elastic member (133) is connected to the first valve seat (132).

21. The valve device (10) according to claim 16, characterized in that The first valve seat (132) has a valve seat guide portion (1321), and the first valve core (131) includes a valve core body (1312) and a valve core guide portion (1313), and the valve core guide portion (1313) is sleeved on the outer periphery of the valve seat guide portion (1321), and the valve core guide portion (1313) is guided and matched with the valve seat guide portion (1321).

22. The valve device (10) according to claim 21, characterized in that A sliding sealing ring (41) is provided at the guiding matching position between the valve core guiding portion (1313) and the valve seat guiding portion (1321).

23. The valve device (10) according to claim 16, characterized in that The valve device (10) further comprises a third valve assembly (11), wherein the third valve assembly (11) is located on a side of the first valve assembly (13) away from the second valve assembly (2), and the medium flowing out of the valve channel (222) can flow into the pressure relief chamber (3) through the third valve assembly (11).

24. The valve device (10) according to claim 23, characterized in that The third valve assembly (11) includes a third valve core (111) and a third valve seat (112), wherein the third valve seat (112) has a pilot channel (1121), wherein the pilot channel (1121) is connected to the valve channel (222), and the third valve core (111) can move relative to the third valve seat (112) in a direction away from or close to the second valve assembly (2) to connect or block the pilot channel (1121) and the pressure relief chamber (3).

25. The valve device (10) according to claim 24, characterized in that The third valve seat (112) is mounted on the first valve seat (132).

26. The valve device (10) according to claim 24, characterized in that The valve device (10) has a pilot valve rear passage (12), and when the third valve core (111) is separated from the third valve seat (112), the pilot passage (1121) is connected to the pressure relief chamber (3) through the pilot valve rear passage (12).

27. The valve device (10) according to claim 24, characterized in that The third valve core (111) comprises a conical portion, and the conical portion is used to block or open the pilot channel (1121).

28. The valve device (10) according to any one of claims 24 to 27, characterized in that When the medium in the valve channel (222) pushes the first valve component (13) to separate from the protruding structure (224), a portion of the medium flowing out of the valve channel (222) flows into the pressure relief chamber (3) through the third valve component (11), and another portion flows into the pressure relief chamber (3) through the gap between the first valve component (13) and the protruding structure (224).

29. The valve device (10) according to claim 24, characterized in that The pilot channel (1121) comprises an axial channel (11211) and a radial channel (11212); the third valve core (111) is used to selectively block the axial channel (11211); the radial channel (11212) is connected to the axial channel (11211); and the radial channel (11212) extends radially along the third valve seat (112) to the accommodating chamber (5).

30. The valve device (10) according to claim 16, characterized in that The first valve core (131) has a valve core bottom surface for fitting with the protruding structure (224), and a valve core groove (1314) is provided on the valve core bottom surface; the protruding structure (224) has a shell top surface for fitting with the first valve core (131), and a shell groove (223) is provided on the shell top surface; the valve core groove (1314) is communicated with the shell groove (223).

31. The valve device (10) according to claim 23, characterized in that The valve device (10) further comprises an electromagnetic component (6), wherein the electromagnetic component (6) is located on a side of the third valve component (11) away from the second valve component (2), and the electromagnetic component (6) comprises a base (61), a coil (62) and a moving member (63), wherein the coil (62) is mounted on the base (61), and the coil (62) is used to drive the moving member (63) to move, and one end of the moving member (63) abuts against the third valve component (11).

32. The valve device (10) according to claim 31, characterized in that A pilot valve rear passage (12) is defined between the base (61) and the first valve seat (132).

33. The valve device (10) according to claim 31, characterized in that The movable part (63) includes a core shaft (631) and a magnetic core (632), wherein the magnetic core (632) is fixedly mounted on the outer periphery of the core shaft (631), and the electromagnetic assembly (6) also includes a first elastic part (64) and a second elastic part (65), wherein the first elastic part (64) abuts against an end of the magnetic core (632) away from the first valve assembly (13), and the second elastic part (65) abuts against an end of the magnetic core (632) close to the first valve assembly (13).

34. A vibration absorber (20), characterized in that: A valve device (10) comprising any one of claims 1-33.

35. A suspension system (100), characterized in that: Comprising the vibration absorber (20) as claimed in claim 34.

36. A vehicle (1000), characterized in that: Comprising the suspension system (100) of claim 35.

Images