Valve assemblies, solenoid valves, dampers, suspension systems, and vehicles

Abstract

This application relates to a valve assembly, a solenoid valve, a damper, a suspension system, and a vehicle. The valve assembly includes a valve body and a valve stem. The valve body has a valve passage and a first inlet and an outlet communicating with the valve passage. At least a portion of the valve stem passes through the valve passage and blocks the first inlet and outlet. The valve stem has a conductive channel communicating with the valve passage. An adjusting orifice communicating with the conductive channel is formed on the outer peripheral surface of the valve stem. The valve stem is configured to move axially along the valve body under the action of an external force to change the flow area of ​​the adjusting orifice. This allows for changes in the inlet pressure of the fluid at the adjusting orifice to accommodate different valve opening pressure requirements.

Description

Technical Field

[0001] This application relates to the field of solenoid valve technology, and more particularly to a valve assembly, solenoid valve, damper, suspension system, and vehicle. Background Technology

[0002] In related technologies, a solenoid valve is typically installed within the damper to change the opening pressure of the main valve body. However, the solenoid valve only has two states, on and off, which limits the range of adjustment for the opening pressure. Summary of the Invention

[0003] This application provides a valve assembly, a solenoid valve, a damper, a suspension system, and a vehicle, which improves the ability to regulate valve opening pressure, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a valve assembly is provided, comprising:

[0005] The valve body has a valve channel and a first inlet and an outlet communicating with the valve channel;

[0006] The valve stem, at least partially inserted into the valve channel, blocks the first liquid inlet and the liquid outlet. The valve stem has a conductive channel communicating with the valve channel, and an adjustment hole communicating with the conductive channel is formed on the outer peripheral surface of the valve stem.

[0007] The valve stem is configured to move axially along the valve body under the action of an external force to change the flow area of ​​the regulating orifice.

[0008] Optionally, the valve body includes:

[0009] The main body has the valve channel, the first liquid inlet hole and the liquid outlet hole;

[0010] An adjusting part is connected to the main body and is disposed near the liquid outlet hole. The adjusting part is configured to block the adjusting hole and change the blocking range of the adjusting hole after the valve stem is actuated, so as to change the flow area of ​​the adjusting hole.

[0011] Optionally, a sealing part is provided between the adjusting part and the valve stem. The sealing part is configured to block the adjusting hole and change the blocking range of the adjusting hole after the valve stem is actuated, so as to change the flow area of ​​the adjusting hole.

[0012] Optionally, the sealing portion is spaced apart from the valve stem.

[0013] Optionally, the distance between the sealing part and the valve stem is S, which satisfies: 0.01 mm ≤ S ≤ 0.04 mm.

[0014] Optionally, the adjusting part is arranged around the liquid outlet hole.

[0015] Optionally, the valve assembly further includes:

[0016] An elastic element, connected to the valve stem, is used to apply force to the valve stem.

[0017] Optionally, the elastic element is sleeved on the valve stem, and the elastic element abuts against the valve body.

[0018] Optionally, the valve stem has a larger section and a smaller section, the outer diameter of the larger section is larger than the outer diameter of the smaller section, and the smaller section is at least partially inserted into the valve passage. The elastic element is sleeved on the smaller section, one end of the elastic element abuts against the larger section, and the other end of the elastic element abuts against the valve body.

[0019] Optionally, the elastic element is disposed within the valve channel, with one end of the elastic element abutting against the end of the valve stem that penetrates the valve channel, and the other end of the elastic element abutting against the channel wall of the valve channel.

[0020] Optionally, along the direction from the valve body to the valve stem, the adjusting orifice includes a gradually changing section with a gradually changing width.

[0021] Optionally, the width of the transition section decreases along the direction from the valve body to the valve stem.

[0022] Optionally, the adjustment hole is configured to be teardrop-shaped.

[0023] According to a second aspect of this application, a solenoid valve is provided, comprising:

[0024] Solenoid valve body;

[0025] As described above, the valve assembly is located within the body of the solenoid valve.

[0026] Optionally, the valve body divides the interior of the solenoid valve body into a first valve chamber and a second valve chamber that are interconnected, the adjusting hole is configured to connect the valve channel and the first valve chamber, and the solenoid valve body has a valve port that communicates with the second valve chamber.

[0027] Optionally, the solenoid valve body also has a second inlet hole communicating with the second valve chamber, and the valve body is configured to close the second inlet hole.

[0028] Optionally, the solenoid valve further includes:

[0029] A driving component is disposed within the body of the solenoid valve. The driving component is throttle-connected to the valve stem and is used to drive the valve stem to move axially along the valve body.

[0030] According to a third aspect of this application, a damper is also provided, including the solenoid valve as described above.

[0031] According to a fourth aspect of this application, a suspension system is also provided, including the damper as described above.

[0032] According to a fifth aspect of this application, a vehicle is also provided, including the suspension system as described above.

[0033] In the valve assembly, solenoid valve, damper, suspension system, and vehicle of this application embodiment, by providing an adjusting hole on the valve stem, when the valve stem moves axially along the valve body under the action of an external force, the range of the adjusting hole being blocked by the orifice wall of the liquid outlet can be changed, thereby changing the flow area of ​​the adjusting hole. The smaller the flow area of ​​the adjusting hole, the lower the inlet pressure of the fluid at the adjusting hole; the larger the flow area of ​​the adjusting hole, the higher the inlet pressure of the fluid at the adjusting hole. Therefore, the inlet pressure of the fluid at the adjusting hole can be changed to adapt to different valve opening pressure requirements.

[0034] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0035] 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.

[0036] 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.

[0037] Figure 1 This is one of the cross-sectional views of the solenoid valve provided in the exemplary embodiments of this disclosure;

[0038] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0039] Figure 3 yes Figure 2 Enlarged schematic diagram of part B in the middle;

[0040] Figure 4 yes Figure 1 Schematic diagram of the fluid path inside the solenoid valve;

[0041] Figure 5 This is a second cross-sectional view of the solenoid valve provided in the exemplary embodiments of this disclosure;

[0042] Figure 6 This is a schematic diagram of the valve stem provided in an exemplary embodiment of this disclosure;

[0043] Figure 7 This is a partial cross-sectional view of a damper provided in an exemplary embodiment of this disclosure.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Valve body; 11. Valve passage; 12. First inlet port; 13. Outlet port; 14. Main body; 15. Adjustment section; 16. Sealing section;

[0046] 2. Valve stem; 21. Conducting channel; 22. Adjusting hole; 221. Gradient section; 23. Larger section; 24. Smaller section;

[0047] 3. Elastic components;

[0048] 4. Solenoid valve body; 41. First valve chamber; 42. Second valve chamber; 43. Valve port; 44. Second inlet port;

[0049] 5. Drive components;

[0050] 6. Upper cavity of cylinder block;

[0051] 7. Lower cavity of cylinder block. Detailed Implementation

[0052] 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.

[0053] According to the first aspect of this application, referring to Figures 1 to 7 This disclosure provides a valve assembly. The valve assembly includes a valve body 1 and a valve stem 2. The valve body 1 has a valve passage 11 and a first inlet hole 12 and an outlet hole 13 communicating with the valve passage 11. At least a portion of the valve stem 2 passes through the valve passage 11 and blocks the first inlet hole 12 and the outlet hole 13. The valve stem 2 has a guiding channel 21 communicating with the valve passage 11. An adjusting hole 22 communicating with the guiding channel 21 is formed on the outer peripheral surface of the valve stem 2. The valve stem 2 is configured to move axially along the valve body 1 under the action of an external force to change the flow area of ​​the adjusting hole 22.

[0054] In this embodiment, by providing an adjusting hole 22 on the valve stem 2, when the valve stem 2 moves axially along the valve body 1 under external force, the extent to which the adjusting hole 22 is blocked by the wall of the outlet hole 13 can be changed, thereby altering the flow area of ​​the adjusting hole 22. The smaller the flow area of ​​the adjusting hole 22, the lower the inlet pressure of the fluid at the adjusting hole 22; conversely, the larger the flow area of ​​the adjusting hole 22, the higher the inlet pressure of the fluid at the adjusting hole 22. Therefore, the inlet pressure of the fluid at the adjusting hole 22 can be changed to accommodate different valve opening pressure requirements.

[0055] like Figure 4 As shown, fluid can enter the valve channel 11 through the first inlet hole 12 and flow into the conduction channel 21, and then flow out through the regulating hole 22. The valve stem 2 passes through the outlet hole 13 into the valve channel 11. The valve stem 2 can, on the one hand, close the outlet hole 13 to allow fluid to flow out through the regulating hole 22; on the other hand, it can change the extent to which the regulating hole 22 is blocked by the hole wall of the outlet hole 13 by sliding along the axial direction of the valve body 1, thereby changing the flow area of ​​the regulating hole 22. When the regulating hole 22 is completely blocked by the hole wall of the outlet hole 13, the flow area of ​​the regulating hole 22 is 0, and the fluid will not be able to flow out through the regulating hole 22, corresponding to the valve assembly being in the closed state. When the regulating hole 22 is completely exposed to the hole wall of the outlet hole 13, the flow area of ​​the regulating hole 22 is at its maximum value, and the inlet pressure of the fluid at the regulating hole 22 is at its minimum state. When the valve stem 2 slides to switch the state of the regulating orifice 22 between being completely blocked and being completely exposed, the inlet pressure of the fluid at the regulating orifice 22 can be changed to increase the regulating level of the valve opening pressure.

[0056] After the regulating hole 22 is blocked by the wall of the outlet hole 13, the size of the exposed part of the regulating hole 22 is used as the flow area of ​​the regulating hole 22. The smaller the flow area, the more obvious the throttling effect, corresponding to a higher inlet pressure.

[0057] In some embodiments, the valve body 1 is the main valve body 1 of a solenoid valve. The valve stem 2 is a through rod with an internal conducting channel 21. Figure 1 As shown, the valve stem 2 passes through the liquid outlet 13 into the valve channel 11 of the valve body 1, and the valve stem 2 is located above the valve body 1. The upper end of the valve stem 2 is used to connect to the drive member 5, so as to drive the valve stem 2 to move axially along the valve body 1 through the drive member 5.

[0058] In some embodiments, the conduction channel 21 extends axially along the valve stem 2, and an opening is formed at the lower end of the valve stem 2 to enable communication between the conduction channel 21 and the valve channel 11. The valve stem 2 is a circular rod, and an adjustment hole 22 is formed on the outer peripheral surface of the valve stem 2 so that the adjustment hole 22 can correspond to the wall surface of the liquid outlet hole 13. This allows the adjustment hole 22 to be completely, partially, or not completely blocked by the wall surface of the liquid outlet hole 13, thereby adjusting the inlet pressure of the fluid at the adjustment hole 22.

[0059] In some embodiments, the valve stem 2 can be a one-piece structure or a split structure. When the valve stem 2 is a split structure, the upper and lower structures can be connected by a sleeve-type connection or a ball joint connection. For example, the upper and lower structures are connected by a ball joint to facilitate the coaxiality of the valve stem 2 as a whole.

[0060] like Figure 1 As shown, in some embodiments, the valve body 1 includes a main body 14 and an adjusting part 15. The main body 14 has a valve passage 11, a first inlet hole 12, and an outlet hole 13. The adjusting part 15 is connected to the main body 14 and is disposed near the outlet hole 13. The adjusting part 15 is configured to block the adjusting hole 22, and changes its blocking range of the adjusting hole 22 after the valve stem 2 is actuated, thereby changing the flow area of ​​the adjusting hole 22.

[0061] Understandably, the adjusting part 15, as an outwardly protruding portion of the main body 14, can be used to block the adjusting hole 22, thereby changing the flow area of ​​the adjusting hole 22. When the valve stem 2 moves axially along the valve body 1, the relative position of the adjusting part 15 and the adjusting hole 22 changes, so that the adjusting hole 22 can be in a completely closed state, a partially closed state, or a completely exposed state. In the partially closed state, the closing area of ​​the adjusting hole 22 can also be selected to achieve the regulation of the inlet pressure of the fluid at the adjusting hole 22.

[0062] In some embodiments, the adjusting part 15 is located on the side of the main body 14 facing the valve stem 2 through the liquid outlet hole 13, and the adjusting part 15 is integrally formed with the main body 14.

[0063] In some embodiments, the protrusion height of the adjustment portion 15 is greater than or equal to the extension length of the adjustment hole 22, so that the adjustment portion 15 can completely close the adjustment hole 22.

[0064] In some embodiments, the sum of the protrusion height of the adjusting part 15 and the hole depth of the liquid outlet hole 13 is greater than or equal to the extension length of the adjusting hole 22, so that the adjusting part 15 can completely seal the adjusting hole 22 after it mates with the hole wall surface of the liquid outlet hole 13.

[0065] like Figure 1As shown, in some embodiments, a sealing portion 16 is provided between the adjusting portion 15 and the valve stem 2. The sealing portion 16 is configured to block the adjusting hole 22, and changes its blocking range of the adjusting hole 22 after the valve stem 2 is actuated, thereby changing the flow area of ​​the adjusting hole 22.

[0066] It is understood that by providing a sealing part 16 between the adjusting part 15 and the valve stem 2, a sealed connection between the adjusting part 15 and the valve stem 2 is achieved to prevent liquid leakage between them. The sealing part 16 is a sliding sealing element, allowing relative sliding between the valve stem 2 and the sealing part 16.

[0067] In some embodiments, the sealing portion 16 is arranged radially inside the adjusting portion 15. The sealing portion 16 includes at least one of a sliding bearing, a copper block, and a PTFE (Polytetrafluoroethylene) ring. Of course, the sealing portion 16 can also be made of other materials capable of achieving sliding connection and sealing between the adjusting portion 15 and the valve stem 2.

[0068] In some embodiments, the sealing portion 16 is spaced apart from the valve stem 2.

[0069] It is understandable that the sealing part 16 and the valve stem 2 are spaced apart to ensure that the valve stem 2 can slide relative to the sealing part 16, and to prevent the valve stem 2 from being stuck by the sealing part 16 and losing the inlet pressure regulation function.

[0070] like Figure 3 As shown, in some embodiments, the distance between the sealing part 16 and the valve stem 2 is S, which satisfies: 0.01 mm ≤ S ≤ 0.04 mm.

[0071] It is understandable that the distance between the sealing part 16 and the valve stem 2 is set within the range of 0.01 mm to 0.04 mm to meet the response and performance requirements of the solenoid valve. If the distance between the sealing part 16 and the valve stem 2 is less than 0.01 mm, it may cause jamming during the sliding of the valve stem 2. If the distance between the sealing part 16 and the valve stem 2 is greater than 0.04 mm, fluid leakage may occur between the sealing part 16 and the valve stem 2, rendering it unable to perform inlet pressure regulation.

[0072] In some embodiments, the distance between the sealing part 16 and the valve stem 2 is set to 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, or any value between any two.

[0073] like Figure 2 As shown, in some embodiments, the adjustment part 15 is circumferentially disposed around the liquid outlet 13.

[0074] It is understandable that by circling the adjustment part 15 around the liquid outlet 13, the valve stem 2 can be inserted into the liquid inlet in any position, so that the adjustment hole 22 of the valve stem 2 can be matched with the adjustment part 15, thereby facilitating the assembly of the valve stem 2.

[0075] like Figure 1 As shown, in some embodiments, the valve assembly further includes an elastic element 3. The elastic element 3 is connected to the valve stem 2 and is used to apply a force to the valve stem 2.

[0076] It is understandable that by applying a force to the valve stem 2 through the elastic element 3, the stability of the valve stem 2 during its movement can be improved, thereby greatly improving the response and stability of the solenoid valve.

[0077] In some embodiments, the extension direction of the elastic element 3 is the axial direction of the valve body 1 or the solenoid valve.

[0078] In some embodiments, the elastic element 3 is a spring.

[0079] like Figure 1 As shown, in some embodiments, the elastic element 3 is sleeved on the valve stem 2, and the elastic element 3 abuts against the valve body 1.

[0080] It is understandable that when the elastic element 3 is sleeved on the valve stem 2 and abuts against the valve body 1, and there is relative movement between the valve stem 2 and the valve body 1, the elastic element 3 can switch from the natural state to the compressed state, or switch from the self-compressed state to the natural state, so that the elastic element 3 can apply force to the valve stem 2.

[0081] like Figure 1 and Figure 6 As shown, in some embodiments, the valve stem 2 has a larger segment 23 and a smaller segment 24. The outer diameter of the larger segment 23 is larger than the outer diameter of the smaller segment 24. The smaller segment 24 is at least partially inserted into the valve passage 11. An elastic member 3 is sleeved on the smaller segment 24. One end of the elastic member 3 abuts against the larger segment 23. The other end of the elastic member 3 abuts against the valve body 1.

[0082] It is understandable that when the elastic element 3 is fitted onto the smaller segment 24, one end of the elastic element 3 can abut against the larger segment 23, and the other end can abut against the valve body 1. When there is relative movement between the valve stem 2 and the valve body 1, the elastic element 3 can switch from the natural state to the compressed state, or switch from the self-compressed state to the natural state, so that the elastic element 3 can apply force to the valve stem 2.

[0083] In some embodiments, the elastic element 3 is annular, and its shape is adapted to the valve stem 2. Specifically, the valve stem 2 is a cylindrical rod. The cross-section of the elastic element 3 is annular. The inner diameter of the elastic element 3 is larger than the diameter of the smaller segment 24, and the outer diameter of the elastic element 3 is smaller than the diameter of the larger segment 23.

[0084] like Figure 5 As shown, in some embodiments, the elastic element 3 is disposed within the valve passage 11. One end of the elastic element 3 abuts against the end of the valve stem 2 that penetrates the valve passage 11. The other end of the elastic element 3 abuts against the passage wall of the valve passage 11.

[0085] It is understandable that, since the elastic element 3 abuts against the end of the valve stem 2 that penetrates the valve channel 11 and the channel wall of the valve channel 11, when there is relative movement between the valve stem 2 and the valve body 1, the elastic element 3 can switch from the natural state to the compressed state, or switch from the compressed state to the natural state, so that the elastic element 3 can apply force to the valve stem 2.

[0086] In the aforementioned embodiments, the elastic element 3 is sleeved on the valve stem 2, which is essentially an internal installation method of the valve stem 2. In this embodiment, the elastic element 3 abuts against the end of the valve stem 2, which is essentially an external installation method of the valve stem 2.

[0087] In some embodiments, the outer diameter of the elastic element 3 is less than or equal to the diameter of the valve passage 11.

[0088] In some embodiments, one end of the valve stem 2 that penetrates the valve passage 11 is directly opposite the bottom surface of the valve passage 11. The two ends of the elastic member 3 abut against the end of the valve stem 2 that penetrates the valve passage 11 and the bottom surface of the valve passage 11, respectively.

[0089] like Figure 6 As shown, in some embodiments, along the direction from valve body 1 to valve stem 2, the adjustment hole 22 includes a gradually changing section 221 with a gradually changing width.

[0090] Understandably, the gradual change in width of the transition section 221 of the regulating orifice 22 alters the degree to which the sealing part 16 adjusts the obstruction range of the regulating orifice 22. For example, if the width of the transition section 221 decreases along the direction from the valve body 1 to the valve stem 2, then the transition section 221 has a shape that is narrower at the top and wider at the bottom. When the valve stem 2 moves axially closer to the valve body 1, because the lower side of the transition section 221 is wider, the valve stem 2 can close a larger area of ​​the regulating orifice 22 with a smaller displacement. Based on the larger area of ​​the regulating orifice 22 being closed, the inlet pressure of the fluid at the regulating orifice 22 can be adjusted to a greater extent. Thus, a larger closing force can be controlled with lower energy. For example, if the width of the transition section 221 increases along the direction from the valve body 1 to the valve stem 2, then the transition section 221 has a shape that is wider at the top and narrower at the bottom. When the valve stem 2 moves axially closer to the valve body 1, because the lower side of the transition section 221 is narrower, the valve stem 2 can close a smaller area of ​​the regulating orifice 22 with a larger displacement. Because the area of ​​the regulating hole 22 that is closed is small, the inlet pressure of the fluid at the regulating hole 22 can be adjusted with greater precision.

[0091] In some embodiments, the adjustment hole 22 includes only a gradient segment 221 with a gradually changing width.

[0092] In some embodiments, the adjustment hole 22 may also include other segments that communicate with the gradient segment 221.

[0093] It should be noted that the width of the adjusting hole 22 is the distance between the two sides of the adjusting hole 22 on the axial direction of the valve stem 2.

[0094] like Figure 6 As shown, in some embodiments, the width of the transition section 221 decreases along the direction from valve body 1 to valve stem 2.

[0095] Understandably, when the valve stem 2 moves axially closer to the valve body 1, because the lower side of the transition section 221 is wider, the valve stem 2 can close a larger area of ​​the regulating orifice 22 through a smaller position. Since the area of ​​the regulating orifice 22 that is closed is larger, the inlet pressure of the fluid at the regulating orifice 22 can be adjusted to a greater extent. Thus, a larger closing force can be controlled with lower energy.

[0096] In some embodiments, the adjustment hole 22 includes only a gradient segment 221 with decreasing width.

[0097] like Figure 6 As shown, in some embodiments, the adjustment hole 22 is configured as a teardrop shape.

[0098] It is understandable that by setting the regulating hole 22 to a teardrop shape, the regulating hole 22 not only has a gradually decreasing width section 221, but also a semi-circular section located at the lower end of the gradually decreasing width section 221. When the valve stem 2 moves axially towards the valve body 1, the valve stem 2 initially closes the smaller area of ​​the regulating hole 22 with a larger displacement, and then closes the larger area of ​​the regulating hole 22 with a smaller displacement, thereby achieving reasonable control of the closing rate of the regulating hole 22 to meet the usage requirements.

[0099] According to a second aspect of this disclosure, a solenoid valve is provided, comprising a solenoid valve body 4 and the aforementioned valve assembly. The valve assembly is disposed within the solenoid valve body 4. This solenoid valve possesses all the beneficial effects of the aforementioned valve assembly, which will not be elaborated further herein.

[0100] like Figure 7 As shown, in some embodiments, the valve body 1 divides the interior of the solenoid valve body 4 into a first valve chamber 41 and a second valve chamber 42 communicating with the first valve chamber 41. The adjustment port 22 is configured to connect the valve passage 11 and the first valve chamber 41. A valve port 43 communicating with the second valve chamber 42 is formed on the solenoid valve body 4.

[0101] Understandably, the fluid in the upper chamber 6 of the cylinder can enter the valve passage 11 through the first inlet hole 12 and flow into the conduction passage 21. Then, it can flow out through the adjustment hole 22 to enter the first valve chamber 41, and after entering the second valve chamber 42, it flows into the lower chamber 7 of the cylinder through the valve port 43. This part forms the pilot flow channel of the solenoid valve.

[0102] In some embodiments, the first valve chamber 41 is the control chamber of the solenoid valve. Based on the interaction between the adjusting hole 22 on the valve stem 2 and the sealing part 16, the pressure in the control chamber can be changed, which can apply a closing force to the main valve body 1, thereby achieving control of a larger closing force with lower energy along the restoration flow direction.

[0103] Valve body 1 is the main stage valve body 1 of the solenoid valve. The main stage valve body 1 can further divide the first valve chamber 41 into a first chamber section, a second chamber section, and a third chamber section that are connected in sequence. The first chamber section is connected to the valve passage 11 through the adjustment hole 22, and the first chamber section serves as the control chamber of the solenoid valve. The second chamber section is an overflow passage, allowing fluid entering the first chamber section to flow into the third chamber section. The end of the third chamber section away from the second chamber section is connected to the second valve chamber 42, so that fluid can flow into the second valve chamber 42 from the third chamber section.

[0104] like Figure 1 As shown, in some embodiments, the solenoid valve body 4 also has a second inlet hole 44 communicating with the second valve chamber 42. The valve body 1 is configured to close the second inlet hole 44.

[0105] like Figure 4 As shown, a portion of the fluid in the upper chamber 6 of the cylinder can enter the valve passage 11 through the first inlet hole 12 and flow into the conduction passage 21. It can then flow out through the adjustment hole 22 to enter the first valve chamber 41, and after entering the second valve chamber 42, it flows into the lower chamber 7 of the cylinder through the valve port 43. This portion forms the pilot flow channel of the solenoid valve. The remaining fluid in the upper chamber 6 of the cylinder can flow into the second valve chamber 42 through the second inlet hole 44, and after entering the second valve chamber 42, it flows into the lower chamber 7 of the cylinder through the valve port 43. This portion forms the return flow channel of the solenoid valve.

[0106] It should be noted that the valve body 1 will close the second inlet port 44 under the action of the elastic element, so that the second inlet port 44 can only switch to the conducting state under the action of a preset pressure. When the fluid in the upper chamber 6 of the cylinder accumulates to a certain level so that the fluid pressure is greater than or equal to the valve opening pressure of the second inlet port 44, the valve body 1 can be driven to move upward along the axis, thereby making the second inlet port 44 connected to the second valve chamber 42. At this time, the fluid can flow into the second valve chamber 42 from the second inlet port 44, and after entering the second valve chamber 42, it flows into the lower chamber 7 of the cylinder from the valve port 43.

[0107] In some embodiments, the valve body 1 has a first position and a second position. In the first position, the valve body 1 closes the second inlet port 44. In the second position, the valve body 1 moves away from the second inlet port 44, so that the second inlet port 44 communicates with the second valve chamber 42.

[0108] like Figure 1 As shown, in some embodiments, the solenoid valve further includes a drive element 5. The drive element 5 is disposed within the solenoid valve body 4. The drive element 5 is throttle-connected to the valve stem 2 and is used to drive the valve stem 2 to move axially along the valve body 1.

[0109] It is understandable that the valve stem 2 is driven by the drive unit to move along the axial direction of the valve body 1, thereby adjusting the inlet pressure of the fluid at the regulating hole 22.

[0110] In some embodiments, the driving component 5 is an electromagnetic module. After applying a certain current to the electromagnetic module, the electromagnetic module can drive the valve stem 2 to move axially along the valve body 1, thereby changing the relative position between the adjusting hole 22 and the sealing part 16.

[0111] According to a third aspect of this disclosure, a damper is provided for a vehicle including the aforementioned solenoid valve, the damper having all the beneficial effects of the aforementioned solenoid valve, which will not be repeated here.

[0112] like Figure 7 As shown, in some embodiments, the damper includes a cylinder body, a solenoid valve is disposed within the cylinder body, and the cylinder body is divided into an upper cylinder chamber 6 and a lower cylinder chamber 7. The aforementioned restoration flow direction is the direction of upper cylinder chamber 6 - solenoid valve - lower cylinder chamber 7.

[0113] According to a fourth aspect of this disclosure, a suspension system is provided that includes the aforementioned damper, and the suspension system has all the beneficial effects of the aforementioned damper, which will not be repeated here.

[0114] According to a fifth aspect of this disclosure, a vehicle is provided that includes the aforementioned suspension system, which has all the beneficial effects of the aforementioned suspension system, which will not be repeated here.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0119] 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 scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A valve assembly, characterized in that, include: The valve body (1) has a valve channel (11) and a first inlet hole (12) and an outlet hole (13) communicating with the valve channel (11); The valve stem (2) is at least partially inserted into the valve channel (11) and blocks the first liquid inlet (12) and the liquid outlet (13). The valve stem (2) has a conductive channel (21) communicating with the valve channel (11). The outer peripheral surface of the valve stem (2) has an adjustment hole (22) communicating with the conductive channel (21). The valve stem (2) is configured to move axially along the valve body (1) under the action of an external force to change the flow area of ​​the regulating hole (22).

2. The valve assembly according to claim 1, characterized in that, The valve body (1) includes: The main body (14) has the valve channel (11), the first liquid inlet (12) and the liquid outlet (13); An adjustment part (15) is connected to the main body part (14) and is disposed near the liquid outlet (13). The adjustment part (15) is configured to block the adjustment hole (22) and change its blocking range of the adjustment hole (22) after the valve stem (2) is actuated, so as to change the flow area of ​​the adjustment hole (22).

3. The valve assembly according to claim 2, characterized in that, A sealing part (16) is provided between the adjusting part (15) and the valve stem (2). The sealing part (16) is configured to block the adjusting hole (22) and change its blocking range on the adjusting hole (22) after the valve stem (2) is actuated, so as to change the flow area of ​​the adjusting hole (22).

4. The valve assembly according to claim 3, characterized in that, The sealing part (16) is spaced apart from the valve stem (2).

5. The valve assembly according to claim 4, characterized in that, The distance between the sealing part (16) and the valve stem (2) is S, which satisfies: 0.01 mm ≤ S ≤ 0.04 mm.

6. The valve assembly according to claim 2, characterized in that, The adjustment part (15) is arranged around the liquid outlet (13).

7. The valve assembly according to any one of claims 2 to 6, characterized in that, The valve assembly also includes: The elastic element (3) is connected to the valve stem (2) and is used to apply force to the valve stem (2).

8. The valve assembly according to claim 7, characterized in that, The elastic element (3) is sleeved on the valve stem (2), and the elastic element (3) abuts against the valve body (1).

9. The valve assembly according to claim 8, characterized in that, The valve stem (2) has a larger section (23) and a smaller section (24), the outer diameter of the larger section (23) is larger than the outer diameter of the smaller section (24), the smaller section (24) is at least partially inserted into the valve channel (11), wherein the elastic element (3) is sleeved on the smaller section (24), one end of the elastic element (3) abuts against the larger section (23), and the other end of the elastic element (3) abuts against the valve body (1).

10. The valve assembly according to claim 8, characterized in that, The elastic element (3) is disposed in the valve channel (11). One end of the elastic element (3) abuts against the end of the valve stem (2) that passes through the valve channel (11), and the other end of the elastic element (3) abuts against the channel wall of the valve channel (11).

11. The valve assembly according to any one of claims 2 to 6, characterized in that, Along the direction from the valve body (1) to the valve stem (2), the adjusting hole (22) includes a gradually changing section (221) with a gradually changing width.

12. The valve assembly according to claim 11, characterized in that, The width of the transition section (221) decreases along the direction from the valve body (1) to the valve stem (2).

13. The valve assembly according to claim 11, characterized in that, The adjustment hole (22) is designed to be teardrop-shaped.

14. A solenoid valve, characterized in that, include: Solenoid valve body (4); The valve assembly as described in any one of claims 1 to 13, wherein the valve assembly is disposed within the solenoid valve body (4).

15. The solenoid valve according to claim 14, characterized in that, The valve body (1) divides the interior of the solenoid valve body (4) into a first valve chamber (41) and a second valve chamber (42) that are interconnected. The adjustment hole (22) is configured to connect the valve channel (11) and the first valve chamber (41). A valve port (43) communicating with the second valve chamber (42) is formed on the solenoid valve body (4).

16. The solenoid valve according to claim 15, characterized in that, The solenoid valve body (4) also has a second liquid inlet hole (44) that communicates with the second valve chamber (42), and the valve body (1) is configured to close the second liquid inlet hole (44).

17. The solenoid valve according to claim 14, characterized in that, The solenoid valve also includes: A drive element (5) is disposed inside the solenoid valve body (4). The drive element (5) is connected to the valve stem (2) for driving the valve stem (2) to move axially along the valve body (1).

18. A damper, characterized in that, Including the solenoid valve as described in any one of claims 14 to 17.

19. A suspension system, characterized in that, Includes the damper as described in claim 18.

20. A vehicle, characterized in that, Including the suspension system as described in claim 19.

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