Valve, shock absorber, chassis and vehicle

Abstract

The utility model discloses a valve, a shock absorber, a chassis and a vehicle, the valve comprises a valve body, a first valve core and a first elastic reset piece, and an inlet and at least one first outlet are formed in the valve body; the first valve element can move between a first position and a second position, the first valve element divides the interior of the valve body into a first cavity and a second cavity, a first overflowing hole is formed in the first valve element, the first cavity and the second cavity are communicated through the first overflowing hole, the surface of the side, facing the first cavity, of the first valve element forms a first pressure bearing face, and the surface of the side, facing the second cavity, of the first valve element forms a second pressure bearing face. The surface of the side, facing the second cavity, of the first valve element forms a second pressure-bearing face, and the pressure-bearing area of the second pressure-bearing face is larger than that of the first pressure-bearing face. The first elastic reset piece abuts against the position between the first valve element and the inner wall face of the valve body, and the first elastic reset piece constantly pushes the first valve element in the direction facing the first position. According to the valve, communication of the inlet and the first outlet is facilitated, and damping force can be controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a valve, a shock absorber, a chassis and a vehicle. Background Art

[0002] Solenoid valves are usually used in electronically controlled shock absorbers on automobile chassis suspension systems, which have the function of adjustable damping force to improve the driving comfort of the automobile. In the related art, the connection operation between the fluid inlet and the fluid outlet of the solenoid valve is complicated, which is not conducive to controlling the damping force. When the solenoid valve is used in the automobile, the driving comfort of the automobile is reduced. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a valve that is conducive to the communication between the inlet and the first outlet and is conducive to controlling the damping force.

[0004] The second object of the utility model is to provide a shock absorber using the valve.

[0005] The third object of the present utility model is to provide a chassis using the above-mentioned shock absorber.

[0006] The fourth objective of the present utility model is to provide a vehicle using the above chassis.

[0007] The valve according to the first embodiment of the utility model comprises: a valve body, on which an inlet and at least one first outlet are formed; a drive assembly, which is arranged on the valve body; a first valve core, which is arranged in the valve body, the drive assembly cooperates with the first valve core, the first valve core is movable between a first position and a second position, the drive assembly drives the first valve core to move in the direction of the second position, the first valve core divides the interior of the valve body into a first chamber and a second chamber, a first flow hole is formed on the first valve core, the first chamber and the second chamber are connected through the first flow hole, the first chamber is connected to the inlet, when the When the first valve core is in the first position, the first valve core blocks the connection between the second chamber and the outlet, the first valve core has a first pressure-bearing surface and a second pressure-bearing surface, the side surface of the first valve core facing the first chamber is configured as the first pressure-bearing surface, the side surface of the first valve core facing the second chamber is configured as the second pressure-bearing surface, and the pressure-bearing area of ​​the second pressure-bearing surface is greater than the pressure-bearing area of ​​the first pressure-bearing surface; a first elastic return member, the first elastic return member is arranged in the valve body, the first elastic return member stops between the first valve core and the inner wall surface of the valve body, and the first elastic return member often pushes the first valve core toward the first position.

[0008] According to the valve of the first aspect of the utility model, the pressure-bearing area of ​​the second pressure-bearing surface is set to be larger than the pressure-bearing area of ​​the first pressure-bearing surface. When the pressure on the second pressure-bearing surface is greater than the pressure on the first pressure-bearing surface, the inlet and the first outlet are connected. The pressures on the first pressure-bearing surface and the second pressure-bearing surface are different to connect the inlet and the first outlet, which is conducive to the smooth flow of fluid in the valve and the control and adjustment of the damping force. Moreover, the connection control method between the inlet and the first outlet is simple, and there is no need to add other components for control, which is conducive to the normal use of the valve and can also reduce the production cost of the valve. In addition, the layout of the first chamber, the second chamber and the first flow hole is reasonable, which is conducive to the fluid flowing in from the inlet to flow smoothly into the second chamber, thereby facilitating the contact between the fluid and the first chamber and the second chamber, so as to facilitate the opening of the valve. When the valve is used in a vehicle, the comfort of the vehicle can be improved.

[0009] According to some embodiments of the present invention, the first valve core is configured to change the degree of connection between the inlet and the first outlet through the first valve core to adjust the flow rate of the first outlet when the pressure difference between the pressure applied to the second pressure-bearing surface and the pressure applied to the first pressure-bearing surface changes.

[0010] According to some embodiments of the utility model, a first pressure-bearing groove is formed on a side surface of the first valve core adjacent to the inlet, the first chamber is defined between the first pressure-bearing groove and the valve body, and the inner wall surface of the first pressure-bearing groove constitutes at least a part of the first pressure-bearing surface; a second pressure-bearing groove is formed on a side surface of the first valve core away from the inlet, the second chamber is defined between the second pressure-bearing groove and the valve body, and the inner wall surface of the second pressure-bearing groove constitutes at least a part of the second pressure-bearing surface; two ends of the first flow hole respectively pass through the bottom wall of the first pressure-bearing groove and the bottom wall of the second pressure-bearing groove.

[0011] According to some embodiments of the utility model, a guide hole is formed on the valve body; the first valve core is provided with a guide column extending along the moving direction of the first valve core, and the guide column is movably engaged in the guide hole.

[0012] According to some embodiments of the present invention, the first elastic reset member is sleeved on the guide column, and the first elastic reset member is stopped between the first pressure-bearing surface and the inner wall of the valve body.

[0013] According to some embodiments of the utility model, the valve body comprises a first valve cavity, the inlet is connected to the first valve cavity, the first outlet is formed on the side wall of the first valve cavity, the first valve core is movably disposed in the first valve cavity, and a side surface of the first valve core away from the inlet is often stopped against a side surface of the first valve cavity away from the inlet to cut off the connection between the inlet and the first outlet.

[0014] According to some embodiments of the present invention, the first valve core has a first sliding sealing portion; the first valve chamber includes: a first sub-valve chamber, the first sub-valve chamber is connected to the inlet, and the first sliding sealing portion cooperates with the first sub-valve chamber in a sliding seal; a second sub-valve chamber, the second sub-valve chamber is arranged on the side of the first sub-valve chamber away from the inlet, the first outlet is formed on the side wall of the second sub-valve chamber, and the side surface of the first valve core away from the inlet and the side surface of the second sub-valve chamber away from the inlet are often stopped to cut off the connection between the inlet and the first outlet.

[0015] According to some embodiments of the utility model, the valve body also has a second valve cavity, the second valve cavity is connected to the first valve cavity, the inlet is formed on the second valve cavity, and at least one second outlet is formed on the second valve cavity; the valve includes: a second valve core, the second valve core is movably arranged in the second valve cavity, the second valve core is often stopped against the inner wall of the second valve cavity on the side away from the first valve core to cut off the connection between the inlet and the second outlet, and when the second valve core is separated from the inner wall of the second valve cavity on the side away from the first valve core, the inlet and the second outlet are connected.

[0016] According to some embodiments of the present invention, the second valve core has a second sliding sealing portion, and the second sliding sealing portion cooperates with the second valve cavity in a sliding seal.

[0017] According to some embodiments of the present invention, a connecting hole is formed on the second valve core, and the inlet is connected to the second valve cavity through the connecting hole; the sum of the cross-sectional areas of the first outlets is greater than the cross-sectional area of ​​the connecting hole.

[0018] According to some embodiments of the present invention, the valve includes: a second elastic return member, wherein the second elastic return member is stopped between the second valve core and an inner wall of the second valve cavity on a side away from the inlet.

[0019] According to some embodiments of the present invention, a cross-sectional area of ​​the second outlet is greater than a cross-sectional area of ​​the first outlet.

[0020] The shock absorber according to the second aspect of the present invention comprises the valve according to the first aspect.

[0021] The chassis according to the embodiment of the third aspect of the utility model includes the shock absorber according to the embodiment of the second aspect.

[0022] The vehicle according to the fourth aspect of the utility model comprises the valve according to the first aspect, the shock absorber according to the second aspect, or the chassis according to the third aspect.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of a valve according to an embodiment of the utility model;

[0026] Figure 2 is a schematic diagram of a first valve core of a valve according to an embodiment of the utility model;

[0027] Figure 3 is a cross-sectional view of a first valve core of a valve according to an embodiment of the utility model;

[0028] Figure 4 is a cross-sectional view of a valve body of a valve according to an embodiment of the utility model;

[0029] Figure 5 is a schematic diagram of a valve body of a valve according to an embodiment of the utility model;

[0030] Figure 6 is a schematic diagram of a second valve core of a valve according to an embodiment of the utility model;

[0031] Figure 7 is a cross-sectional view of a valve according to an embodiment of the utility model, wherein the fluid flows out through the first outlet;

[0032] Figure 8 It is a cross-sectional view of a valve according to an embodiment of the utility model, wherein the fluid flows out through the first outlet and the second outlet.

[0033] Reference numerals:

[0034] 100. Valve;

[0035] 1. Valve body; 11. Inlet; 111. One-way conduction structure;

[0036] 12. first outlet; 13. guide hole; 14. first valve chamber;

[0037] 141. first sub-valve chamber; 142. second sub-valve chamber; 143. step portion;

[0038] 15. Second valve chamber; 151. Second outlet; 16. Flow hole;

[0039] 17. First chamber; 18. Second chamber;

[0040] 2. first valve core; 21. first pressure-bearing surface; 22. second pressure-bearing surface;

[0041] 23. First flow hole; 24. First pressure-bearing groove; 25. Second pressure-bearing groove;

[0042] 26. Guide column; 27. First sliding sealing part;

[0043] 3. First elastic reset member; 4. Second valve core;

[0044] 41. second sliding seal portion; 42. communicating hole;

[0045] 5. A second elastic reset member; 6. A driving assembly;

[0046] 61. Moving iron core; 62. Fixed iron core; 63. Magnetic isolation ring;

[0047] 64. core cover; 65. coil assembly; 66. coil housing; 67. magnetic plate;

[0048] 7. Valve seat. DETAILED DESCRIPTION

[0049] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1-Figure 8 A valve 100 according to an embodiment of the first aspect of the present invention is described.

[0050] like Figure 1-Figure 3 As shown, the valve 100 according to the embodiment of the first aspect of the utility model includes a valve body 1 and a first valve core 2.

[0051] Specifically, the valve body 1 is formed with an inlet 11 and at least one first outlet 12, and the first valve core 2 is disposed in the valve body 1, and the first valve core 2 can move between a first position and a second position. Figure 1-Figure 3 In the example, the first valve core 2 can be arranged along the axial direction of the valve body 1 (for example, Figure 1The first valve core 2 is movable in the up and down directions in the figure. When the first valve core 2 is in the first position, the first valve core 2 blocks the connection between the inlet 11 and the first outlet 12, that is, the valve 100 is in a closed state (the valve 100 in this application is a normally closed valve). When the first valve core 2 is in the second position, the first valve core 2 conducts the connection between the inlet 11 and the first outlet 12, that is, the valve 100 is in an open state. Therefore, by moving the first valve core 2 between the first position and the second position, the flow at the first outlet 12 can be adjusted to adjust and control the damping force.

[0052] Reference Figure 1 The first valve core 2 divides the interior of the valve body 1 into a first chamber 17 and a second chamber 18. A first flow hole 23 is formed on the first valve core 2. The first chamber 17 and the second chamber 18 are connected through the first flow hole 23. The first chamber 17 is connected to the inlet 11. When the first valve core 2 is in the first position, the first valve core 2 blocks the connection between the second chamber 18 and the outlet. For example, Figure 1 In the example, a first chamber 17 is defined between the lower part of the first valve core 2 and the valve body 1, and a second chamber 18 is defined between the upper part of the first valve core 2 and the side of the valve body 1 away from the inlet 11. The first chamber 17 is connected to the inlet 11. When the first valve core 2 is located at the first position, the connection between the second chamber 18 and the first outlet 12 is cut off, and the fluid flowing into the valve body 1 from the inlet 11 first flows to the first chamber 17, and part of the fluid in the first chamber 17 can flow to the second chamber 18 through the first guide hole. When the first valve core 2 is located at the second position, the second chamber 18 is connected to the first outlet 12. At this time, the fluid flowing in from the inlet 11 can flow to the first outlet 12 through the first chamber 17, the first guide hole and the second chamber 18 in sequence, and then flow out from the first outlet 12 to the outside of the valve 100. In addition, the layout of the first chamber 17, the second chamber 18 and the first flow hole 23 is reasonable, which is conducive to the fluid flowing in from the inlet 11 to flow smoothly into the second chamber 18, thereby facilitating the contact between the fluid and the first chamber 17 and the second chamber 18, so as to facilitate the opening of the valve 100.

[0053] Combination Figure 1 and Figure 3 The first valve core 2 has a first pressure-bearing surface 21 and a second pressure-bearing surface 22. The side surface of the first valve core 2 facing the first chamber 17 is configured as the first pressure-bearing surface 21, and the side surface of the first valve core 2 facing the second chamber 18 is configured as the second pressure-bearing surface 22. The pressure-bearing area of ​​the second pressure-bearing surface 22 is larger than the pressure-bearing area of ​​the first pressure-bearing surface 21. The first elastic reset member 3 is disposed in the valve body 1. The first elastic reset member 3 stops between the first valve core 2 and the inner wall surface of the valve body 1. The first elastic reset member 3 always pushes the first valve core 2 toward the first position.

[0054] For example, in Figure 1-Figure 3In the example, the first pressure-bearing surface 21 is located below the second pressure-bearing surface 22. Fluid, such as oil, flows into the first chamber 17 through the inlet 11 and contacts the first pressure-bearing surface 21, and then flows into the second chamber 18 through the first flow hole 23 and contacts the second pressure-bearing surface 22. The first elastic return member 3 abuts between the lower part of the first valve core 2 and the inner wall surface of the valve body 1, and the first elastic return member 3 acts on the first valve core 2 to abut the upper surface of the first valve core 2 against the inner wall surface of the valve body 1 away from the inlet 11, so that the first valve core 2 can be maintained at the first position to close the valve 100.

[0055] In this way, when the fluid flows to the first pressure-bearing surface 21 and the second pressure-bearing surface 22, the amount of fluid in contact with the second pressure-bearing surface 22 is greater than the amount of fluid in contact with the first pressure-bearing surface 21, so that the pressure on the second pressure-bearing surface 22 can be greater than the pressure on the first pressure-bearing surface 21, so that the size of the communication opening of the first valve core 2 can be adjusted by the size of the pressure difference between the second pressure-bearing surface 22 and the first pressure-bearing surface 21. That is, when the fluid pressure on the second pressure-bearing surface 22 is greater than the fluid pressure on the first pressure-bearing surface 21, the fluid in the second chamber 18 acts downward on the first valve core 2 to overcome the upward force of the first elastic reset member 3 on the first valve core 2, and when the fluid pressure on the second pressure-bearing surface 22 is greater than the force of the first elastic reset member 3 on the first valve core 2, the first valve core 2 can be pushed to move toward the side where the inlet 11 is located so that the second chamber 18 is connected with the first outlet 12, that is, the inlet 11 is connected with the first outlet 12, so that the fluid flows out from the first outlet 12. In addition, the inlet 11 and the first outlet 12 can be connected by the different pressures on the first pressure-bearing surface 21 and the second pressure-bearing surface 22, which is beneficial to the smooth flow of fluid in the valve 100 and the control and adjustment of the damping force. Moreover, the connection control method between the inlet 11 and the first outlet 12 is simple, and there is no need to add other components for control, which is beneficial to the normal use of the valve 100 and can also reduce the production cost of the valve 100. When the valve 100 is used in a vehicle, the comfort of the vehicle can be improved. It should be noted that the "pressure-bearing surface" may refer to the surface on the first valve core 2 that is in contact with the fluid and is subjected to the fluid pressure. It should be noted that the area of ​​the first pressure-bearing surface 21 and the area of ​​the second pressure-bearing surface 22 can be set according to the specific use to better meet the actual application.

[0056] Reference Figure 1 The valve 100 includes a drive assembly 6, which is disposed on the valve body 1. The drive assembly 6 cooperates with the first valve core 2. When the drive assembly 6 is working, the drive assembly 6 drives the first valve core 2 to move toward the second position to enable the connection between the inlet 11 and the first outlet 12.

[0057] For example, in Figure 1In the example, the drive assembly 6 is located above the valve body 1 and connected to the valve body 1, and the drive assembly 6 can act on the first valve core 2 to drive the first valve core 2 to move in the up and down direction. When the drive assembly 6 drives the first valve core 2 to move downward (that is, move from the first position to the second position), the upper end surface of the first valve core 2 is separated from the inner wall of the first valve cavity 14 on the side away from the inlet 11, and the second chamber 18 is connected to the first outlet 12, and the inlet 11 and the first outlet 12 are in a connected state. When the first elastic reset member 3 acts on the first valve core 2 to move the first valve core 2 upward until the upper end surface of the first valve core 2 and the inner wall of the first valve cavity 14 on the side away from the inlet 11 stop (that is, the first valve core 2 moves to the first position), the first valve core 2 cuts off the connection between the inlet 11 and the first outlet 12. Therefore, the drive assembly 6 can act on the first valve core 2 to drive the first valve core 2 to move, thereby adjusting the connection opening of the first valve core 2 to adjust the flow rate of the first outlet 12. In addition, through the drive of the drive assembly 6 and the joint action of the first pressure-bearing surface 21 and the second pressure-bearing surface 22, the valve 100 is a valve 100 with dual adjustable damping force. It is more conducive to adjusting the connection opening of the first valve core 2. Moreover, through the action of the drive assembly 6, the movement reliability of the first valve core 2 is improved, thereby improving the reliability of the use of the valve 100. In addition, the first valve core 2 part adjusts low-speed and small flow through the pressure difference between the drive assembly 6 and the first pressure-bearing surface 21 and the second pressure-bearing surface 22, and the second valve core 4 part adjusts high-speed and large flow, so that the adjustment range is larger, the pressure is more stable at large flow, the valve 100 has a simple structure, a clever design, and a low manufacturing cost.

[0058] According to the valve 100 of the first embodiment of the utility model, by setting the pressure bearing area of ​​the second pressure bearing surface 22 to be larger than the pressure bearing area of ​​the first pressure bearing surface 21, when the pressure on the second pressure bearing surface 22 is greater than the pressure on the first pressure bearing surface 21, the inlet 11 and the first outlet 12 are connected, and the pressure on the first pressure bearing surface 21 and the second pressure bearing surface 22 is different to connect the inlet 11 and the first outlet 12, so as to facilitate the smooth flow of fluid in the valve 100, and to facilitate the control and adjustment of the damping force. Moreover, the connection control method of the inlet 11 and the first outlet 12 is simple, and no other components need to be added for control, which is conducive to the normal use of the valve 100 and can also reduce the production cost of the valve 100. In addition, the layout of the first chamber 17, the second chamber 18 and the first flow hole 23 is reasonable, which is conducive to the fluid flowing in from the inlet 11 to flow smoothly into the second chamber 18, so as to facilitate the contact between the fluid and the first chamber 17 and the second chamber 18, so as to facilitate the opening of the valve 100. When the valve 100 is used in a vehicle, the comfort of the vehicle can be improved.

[0059] According to some embodiments of the utility model, the first valve core 2 is configured such that when the pressure difference between the pressure on the second pressure-bearing surface 22 and the pressure on the first pressure-bearing surface 21 changes, the communication opening of the inlet 11 and the first outlet 12 through the first valve core 2 changes to adjust the flow rate of the first outlet 12. For example, when the pressure difference between the pressure on the second pressure-bearing surface 22 and the pressure on the first pressure-bearing surface 21 is large, the communication opening of the first valve core 2 is large, and at this time, the flow rate of the fluid flowing between the second pressure-bearing surface 22 and the valve body 1 is large, that is, the flow rate at the first outlet 12 is large. When the pressure difference between the pressure on the second pressure-bearing surface 22 and the pressure on the first pressure-bearing surface 21 is small, the communication opening of the first valve core 2 is small, and at this time, the flow rate of the fluid flowing between the second pressure-bearing surface 22 and the valve body 1 is small, that is, the flow rate at the first outlet 12 is small. Therefore, the first valve core 2 can control the communication opening of the first valve core 2 according to the change of the pressure difference between the pressure on the second pressure-bearing surface 22 and the pressure on the first pressure-bearing surface 21, so as to effectively adjust the flow at the first outlet 12, so that the adjustment range is larger, which is conducive to controlling the damping force.

[0060] According to some embodiments of the present invention, Figure 1-Figure 3 The two ends of the first flow hole 23 penetrate the first pressure-bearing surface 21 and the second pressure-bearing surface 22 respectively. When the inlet 11 and the first outlet 12 are connected, the fluid flowing in from the inlet 11 is suitable to flow to the first outlet 12 through the first flow hole 23. Figure 1-Figure 3 In the example, the first flow hole 23 passes through both sides of the first valve core 2 in the up-down direction, the first pressure-bearing surface 21 and the second pressure-bearing surface 22 are opposite to each other in the up-down direction, and the first flow hole 23 is connected to the inlet 11. When the first valve core 2 opens the connection between the inlet 11 and the first outlet 12, the fluid flowing in from the inlet 11 can flow to the first pressure-bearing surface 21, and flow along the first flow hole 23 to the second pressure-bearing surface 22, and then flow from between the first valve core 2 and the valve body 1 to the first outlet 12 and then flow out to the outside of the valve 100. With such a configuration, the first valve core 2 has a simple structure, a clever design, is easy to produce and process, and has a low production cost. In addition, allowing the flow of fluids such as oil to be balanced is conducive to the smooth flow of the fluid between the inlet 11 and the first outlet 12.

[0061] According to some embodiments of the present invention, referring to Figure 1-Figure 3A first pressure-bearing groove 24 is formed on the surface of the side adjacent to the inlet 11 of the first valve core 2, a first chamber 17 is defined between the first pressure-bearing groove 24 and the valve body 1, and the inner wall surface of the first pressure-bearing groove 24 constitutes at least a part of the first pressure-bearing surface 21. A second pressure-bearing groove 25 is formed on the surface of the side away from the inlet 11 of the first valve core 2, a second chamber 18 is defined between the second pressure-bearing groove 25 and the valve body 1, and the inner wall surface of the second pressure-bearing groove 25 constitutes at least a part of the second pressure-bearing surface 22. Both ends of the first flow hole 23 pass through the bottom wall of the first pressure-bearing groove 24 and the bottom wall of the second pressure-bearing groove 25 respectively.

[0062] For example, in Figure 1-Figure 3 In the example, a first pressure-bearing groove 24 is formed on the lower surface of the first valve core 2, and a second pressure-bearing groove 25 is formed on the upper surface of the first valve core 2. The second pressure-bearing groove 25 and the first pressure-bearing groove 24 are opposite to each other in the vertical direction, and the inner circumferential cross-sectional area of ​​the second pressure-bearing groove 25 is greater than the inner circumferential cross-sectional area of ​​the first pressure-bearing groove 24. It should be noted that, if Figure 3 As shown, the first pressure-bearing surface 21 refers to the inner wall surface of the first pressure-bearing groove 24 and the lower end surface of the first valve core 2, and the second pressure-bearing surface 22 refers to the inner wall surface of the second pressure-bearing groove 25. That is, the sum of the area of ​​the bottom wall of the first pressure-bearing groove 24 and the area of ​​the lower end surface of the first valve core 2 is the area of ​​the first pressure-bearing surface 21, and the area of ​​the bottom wall of the second pressure-bearing groove 25 is the area of ​​the second pressure-bearing surface 22. For example, Figure 1 As shown, when the valve 100 is in a closed state, the second pressure-bearing groove 25 is the second chamber 18 , and the space between the first pressure-bearing groove 24 and the valve body 1 is the first chamber 17 .

[0063] In this way, the structure of the first valve core 2 is simple, and the production difficulty of the first pressure-bearing groove 24 and the second pressure-bearing groove 25 is relatively small, thereby reducing the production difficulty of the first valve core 2 and simplifying the structure of the valve 100. Moreover, the weight of the first valve core 2 can be reduced to facilitate the movement of the first valve core 2 in the valve body 1. It should be noted that the proximity and distance in this solution can refer to proximity and distance along the flow path of the fluid.

[0064] According to some embodiments of the present invention, Figure 1 , Figure 3 and Figure 4 A guide hole 13 is formed on the valve body 1, and a guide column 26 extending along the moving direction of the first valve core 2 is provided on the first valve core 2. The guide column 26 is movably fitted in the guide hole 13. For example, Figure 1 , Figure 3 and Figure 4In the example, a guide hole 13 extending in the up-down direction is formed on one side of the valve body 1 adjacent to the first valve core 2, and a guide column 26 extending in the up-down direction is provided on the bottom wall of the first pressure-bearing groove 24 of the first valve core 2, and the lower end of the guide column 26 is movably fitted in the guide hole 13. With such a configuration, on the one hand, the guide hole 13 has a guiding effect on the guide column 26, thereby improving the accuracy of the up-down movement of the first valve core 2, and also improving the reliability of the up-down movement of the first valve core 2, and avoiding the deflection of the first valve core 2 during the movement. On the other hand, the guide hole 13 has a positioning effect on the guide column 26, which is conducive to the rapid assembly of the first valve core 2 on the valve body 1, and improves the assembly efficiency of the valve body 1 and the first valve core 2. In addition, the guide hole 13 and the guide column 26 have a simple structure, which is conducive to the production and processing of the valve 100.

[0065] According to some embodiments of the present invention, Figure 1 The first elastic reset member 3 is sleeved on the guide column 26, and the first elastic reset member 3 is stopped between the first pressure-bearing surface 21 and the inner wall of the valve body 1. Figure 1 In the example, the first elastic reset member 3 is sleeved on the outer periphery of the guide column 26, the lower end of the first elastic reset member 3 is stopped against the inner wall of the valve body 1, and the upper end of the first elastic reset member 3 is stopped against the first pressure-bearing surface 21. When the amount of fluid flowing to the second pressure-bearing surface 22 is large, the first valve core 2 is subjected to the fluid pressure and moves downward after overcoming the force of the first elastic reset member 3 on the first valve core 2, and the first elastic reset member 3 is compressed at this time. When the amount of fluid at the second pressure-bearing surface 22 is small, the force of the fluid on the first valve core 2 is reduced, and the force of the first elastic reset member 3 on the first valve core 2 can push the first valve core 2 to move upward. In this way, the first elastic reset member 3 can act on the first valve core 2 so that the upper end face of the first valve core 2 keeps stopping against the inner wall of the valve body 1, that is, the first valve core 2 often cuts off the communication between the inlet 11 and the first outlet 12. In addition, the use cost of the first elastic reset member 3 is low, thereby reducing the use cost of the valve 100. For example, the first elastic reset member 3 can be set as a spring, but is not limited thereto.

[0066] According to some embodiments of the present invention, referring to Figure 1 , Figure 4 and Figure 5 The valve body 1 has a first valve cavity 14, the inlet 11 is connected to the first valve cavity 14, the first outlet 12 is formed on the side wall of the first valve cavity 14, the first valve core 2 is movably arranged in the first valve cavity 14, and the side surface of the first valve core 2 away from the inlet 11 is often stopped against the side surface of the first valve cavity 14 away from the inlet 11 to cut off the communication between the inlet 11 and the first outlet 12.

[0067] For example, in Figure 1 , Figure 4 and Figure 5In the example, the first valve cavity 14 is formed at the upper part of the valve body 1, and the first inlet 11 penetrates the side wall of the first valve cavity 14 in the horizontal direction to connect the first valve cavity 14 with the first outlet 12. The first valve core 2 can move in the first valve cavity 14 in the up-down direction, and the upper end surface of the first valve core 2 and the upper side surface of the first valve cavity 14 always stop to separate the inlet 11 and the first outlet 12. In this way, the first valve cavity 14 can be used to accommodate the first valve core 2. In addition, the fluid flowing into the first valve cavity 14 from the inlet 11 can be temporarily stored in the first valve cavity 14. When the fluid flow rate at the second pressure-bearing surface 22 is large, and the pressure at the second pressure-bearing surface 22 is greater than the pressure at the first pressure-bearing surface 21, the fluid in the first valve cavity 14 flows from the upper end surface of the first valve core 2 and the inner wall of the first valve cavity 14 to the first outlet 12, so as to facilitate the smooth flow of the fluid.

[0068] According to some embodiments of the present invention, Figure 1 and Figure 2 , the first valve core 2 has a first sliding sealing portion 27. For example, the outer peripheral surface of the lower portion of the first valve core 2 is the first sliding sealing portion 27. The first valve chamber 14 includes a first sub-valve chamber 141 and a second sub-valve chamber 142. The first sub-valve chamber 141 is connected to the inlet 11, and the first sliding sealing portion 27 is in sliding sealing cooperation with the first sub-valve chamber 141. For example, in Figure 1 In the example, the first sub-valve chamber 141 is located at the lower side of the second sub-valve chamber 142, the first sub-valve chamber 141 and the second sub-valve chamber 142 are connected, and the first sliding sealing portion 27 is matched with the inner peripheral surface clearance of the first sub-valve chamber 141. Since the clearance is small, it is equivalent to being able to slide and seal the oil. With such a configuration, the inner peripheral surface of the first sub-valve chamber 141 has a guiding effect on the first sliding sealing portion 27, so as to facilitate the movement of the first valve core 2 in the up and down direction. Moreover, the sealing connection between the inner peripheral surface of the first sub-valve chamber 141 and the first sliding sealing portion 27 is conducive to the up and down movement of the first valve core 2. At the same time, the fluid is not easy to flow between the outer peripheral surface of the first valve core 2 and the inner peripheral surface of the first sub-valve chamber 141, so as to facilitate the fluid to flow through the first valve core 2 to the first outlet 12.

[0069] Combination Figure 1 and Figure 4 , the second sub-valve chamber 142 is arranged on a side of the first sub-valve chamber 141 away from the inlet 11, the first outlet 12 is formed on the side wall of the second sub-valve chamber 142, and the side surface of the first valve core 2 away from the inlet 11 and the side surface of the second sub-valve chamber 142 away from the inlet 11 always stop to cut off the communication between the inlet 11 and the first outlet 12. For example, Figure 1 and Figure 4In the example, a step portion 143 is formed between the second sub-valve chamber 142 and the first sub-valve chamber 141, the inner circumferential cross-sectional area of ​​the first sub-valve chamber 141 is smaller than the inner circumferential cross-sectional area of ​​the second sub-valve chamber 142, the first outlet 12 is formed on the side wall of the second sub-valve chamber 142, and the outer circumferential surface of the upper portion of the first valve core 2 is spaced from the side wall of the second sub-valve chamber 142 to facilitate the flow of fluid to the first outlet 12. In addition, the outer edge of the upper portion of the first valve core 2 can stop on the step portion 143 to limit the downward movement of the first valve core 2. In addition, the internal space of the first valve chamber 14 is reasonably designed, which is conducive to the matching of the valve body 1 and the first valve core 2.

[0070] Optionally, combined Figure 5 There are multiple first outlets 12, and the multiple first outlets 12 are arranged at intervals along the circumference of the valve body 1. In the description of the utility model, the meaning of "multiple" is two or more. For example, in Figure 5 In the example, there are four first outlets 12, and the cross-sectional shape of the four first outlets 12 can be set to be circular. Therefore, the first outlet 12 can be used to discharge the fluid such as oil flowing out after passing through the first valve core 2, and the oil can be discharged in multiple directions along the circumference of the valve body 1, so as to be more conducive to the normal use of the valve 100.

[0071] According to some embodiments of the present invention, Figure 1 and Figure 4 The valve body 1 also has a second valve cavity 15, which is connected to the first valve cavity 14, and the inlet 11 is formed on the second valve cavity 15, and at least one second outlet 151 is formed on the second valve cavity 15. For example, Figure 1 and Figure 4 In the example, the second valve chamber 15 is located below the first valve chamber 14, and the second valve chamber 15 and the first valve chamber 14 are connected through the flow hole 16, and the flow hole 16 can be arranged radially outside the guide hole 13. The fluid flowing in from the inlet 11 first flows into the second valve chamber 15, then flows into the first valve chamber 14 through the flow hole 16, and then flows to the first valve core 2.

[0072] Reference Figure 1 and Figure 6 The valve 100 includes a second valve core 4, which is movably disposed in the second valve cavity 15. The second valve core 4 and the inner wall of the second valve cavity 15 away from the first valve core 2 are always stopped to block the communication between the inlet 11 and the second outlet 151. When the second valve core 4 is separated from the inner wall of the second valve cavity 15 away from the first valve core 2, the inlet 11 and the second outlet 151 are connected. For example, Figure 1 and Figure 6In the example, the second valve core 4 can move in the second valve cavity 15 in the up and down direction. When the lower end of the second valve core 4 stops against the lower side of the second valve cavity 15, the inlet 11 and the second outlet 151 are not connected. When the second valve core 4 moves upward, the lower end surface of the second valve core 4 is separated from the lower surface of the second valve cavity 15, and the inlet 11 is connected with the second outlet 151. In this way, the second valve cavity 15 can be used to accommodate and place the second valve core 4, and it is beneficial to the movement of the second valve core 4 in the second valve cavity 15. In addition, when the amount of fluid flowing into the valve body 1 from the inlet 11 is large, part of the fluid can flow out from the second outlet 151, and the other part can flow out from the first outlet 12, so as to increase the flow rate flowing out of the valve 100 per unit time, which is more conducive to the control of the damping force. In addition, the second outlet 151 is used to discharge a large flow of oil, and can also smooth the pressure, playing a role in stabilizing the pressure at a large flow.

[0073] According to some embodiments of the present invention, Figure 1 and Figure 6 The second valve core 4 has a second sliding sealing portion 41, and the second sliding sealing portion 41 is slidably sealed with the second valve cavity 15. Figure 1 and Figure 6 In the example, the outer peripheral surface of the second valve core 4 can be the second sliding sealing part 41, and the second sliding sealing part 41 is matched with the inner wall surface of the second sliding cavity. Since the gap is small, it is equivalent to being able to slide and seal the oil. With such a configuration, on the one hand, the second valve core 4 can move up and down relative to the inner wall surface of the second valve cavity 15, so that the inner wall surface of the second valve cavity 15 has a guiding effect on the movement of the second valve core 4, so as to improve the movement reliability of the second valve core 4. On the other hand, the gap between the inner wall surface of the second valve cavity 15 and the outer peripheral surface of the second valve core 4 is small, and the fluid is not easy to flow between the inner wall surface of the second valve cavity 15 and the outer peripheral surface of the second valve core 4, which is conducive to the fluid flowing into the first valve cavity 14, and then to the normal use of the valve 100.

[0074] According to some embodiments of the present invention, referring to Figure 1 and Figure 6 A connecting hole 42 is formed on the second valve core 4, the inlet 11 is connected to the second valve chamber 15 through the connecting hole 42, and the cross-sectional area of ​​the first outlet 12 is larger than the cross-sectional area of ​​the connecting hole 42. Figure 1 and Figure 6In the example, the connecting hole 42 is formed at the middle position of the second valve core 4. When the second valve core 4 blocks the connection between the inlet 11 and the second outlet 151, the fluid can flow into the second valve cavity 15 through the connecting hole 42, then flow into the first valve cavity 14 through the flow hole 16, and flow out from the first outlet 12 after passing through the first valve core 2, so as to be more conducive to the flow of the fluid in the valve body 1. When there is one first outlet 12, the cross-sectional area of ​​the first outlet 12 is larger than the cross-sectional area of ​​the connecting hole 42; when there are multiple first outlets 12, the sum of the cross-sectional areas of the multiple first outlets 12 is larger than the cross-sectional area of ​​the connecting hole 42. In this way, the cross-sectional area of ​​the connecting hole 42 is smaller, the cross-sectional area of ​​the first outlet 12 is larger, and the amount of fluid flowing out of the first outlet 12 is greater than the amount of fluid flowing through the connecting hole 42 in the same time, so that the pressure at the first valve core 2 is smaller, which is conducive to the first valve core 2 opening the connection between the inlet 11 and the first outlet 12. Moreover, it is also possible to reduce the pressure of the fluid on the first valve core 2, thereby preventing the first valve core 2 from being affected by the force of the fluid and stopping at the upper surface of the valve body 1, which is not conducive to the downward movement of the first valve core 2, thereby protecting the first valve core 2, facilitating the long-term use of the first valve core 2, and further extending the service life of the first valve core 2 and the valve 100.

[0075] According to some embodiments of the present invention, Figure 1 The valve 100 further includes a second elastic reset member 5, which is stopped between the second valve core 4 and the inner wall of the second valve cavity 15 on the side away from the inlet 11. For example, the second elastic reset member 5 is stopped between the upper surface of the second valve core 4 and the upper inner wall of the second valve cavity 15. In this way, the second elastic reset member 5 can act on the second valve core 4 to make the lower end of the second valve core 4 stop against the side of the second valve cavity 15 adjacent to the inlet 11, thereby blocking the connection between the inlet 11 and the second outlet 151. When the fluid pressure on the lower surface of the second valve core 4 is large, the fluid overcomes the action of the second elastic reset member 5 and pushes the second valve core 4 upward to separate the lower surface of the second valve core 4 from the inner wall of the second valve cavity 15 adjacent to the inlet 11, so that the inlet 11 is connected to the second outlet 151. When the amount of fluid is large, the connection opening of the second valve core 4 is large, so that a large amount of fluid can flow out from the second outlet 151. When the flow rate and pressure are large, the second valve core 4 acts as a pilot valve 100 to open the connection between the second outlet 151 and the inlet 11. The magnitude of the pressure on the second valve core 4 can control the degree of the connection opening of the second valve core 4, thereby adjusting the magnitude of the damping force. In addition, the second elastic reset member 5 is simple to use and has a low cost, thereby reducing the production cost of the valve 100. For example, the second elastic reset member 5 can be set as a spring, but is not limited thereto.

[0076] According to some embodiments of the present invention, Figure 1 and Figure 5, the cross-sectional area of ​​the second outlet 151 is greater than the cross-sectional area of ​​the first outlet 12. That is, the flow area of ​​the second outlet 151 per unit time is greater than the flow area of ​​the first outlet 12. Thus, when the flow rate flowing in from the inlet 11 is large, the fluid can be quickly discharged in large quantities from the second outlet 151, so as to facilitate the flow of the fluid through the valve 100, thereby being more conducive to the control of the damping force. For example, when the second outlet 151 can be set to be multiple, the multiple second outlets 151 are arranged at intervals along the circumference of the valve body 1, and the sum of the cross-sectional areas of the multiple second outlets 151 is greater than the sum of the cross-sectional areas of the multiple first outlets 12, so that the fluid can flow out from the second outlets 151 in multiple directions to the outside of the valve 100.

[0077] According to some optional embodiments of the present invention, referring to Figure 1 The driving assembly 6 includes a moving iron core 61, a fixed iron core 62, a magnetic isolation ring 63, a core cover 64, a coil assembly 65, a coil housing 66 and a magnetic conductive plate 67. The moving iron core 61 is arranged inside the core cover 64, the magnetic isolation ring 63 is pressed on the bottom of the core cover 64, and then the coil assembly 65 is sleeved on the outer periphery of the core cover 64. The top of the coil assembly 65 is covered with a magnetic conductive plate 67, and finally installed in the coil housing 66. After the first valve core 2 is installed in the first valve cavity 14 of the valve body 1, the fixed iron core 62 is covered to limit the position. The fixed iron core 62 is arranged between the magnetic isolation ring 63 and the first valve core 2. The second valve core 4 is installed in the lower half of the valve body 1, and finally the valve seat 7 is installed and connected to the bottom of the valve body 1 through threads, and plays the role of limiting the second valve core 4. When the coil assembly 65 is energized, the moving iron core 61 can move in the up and down directions to drive the first electric core to move, thereby controlling the connection opening of the first valve core 2.

[0078] Optionally, a one-way conducting structure 111 is provided at the inlet 11, and the one-way conducting structure 111 is configured to make the fluid flowing through the inlet 11 flow to the communication hole 42 in one direction, and the one-way conducting structure 111 includes a one-way valve plate, and the one-way valve plate is movably arranged in the second valve cavity 15, and the one-way valve plate often covers the inlet 11. As a result, the oil can only flow into the second valve cavity 15 from the outside of the valve 100 through the inlet 11 in one direction, so as to prevent the oil in the second valve cavity 15 from flowing out from the inlet 11, thereby facilitating the flow of the oil in the valve 100 and facilitating the use of the valve 100.

[0079] The following describes in detail the flow process of the fluid under different working conditions when the valve 100 of the present solution is used for a shock absorber.

[0080] like Figure 7As shown, when the shock absorber is compressing or restoring the piston rod at a low speed (not shown in the figure), the flow rate of oil through the valve 100 is relatively small, and the oil flows from the inlet 11 through the one-way valve plate to the second valve cavity 15, and then flows into the second valve core 4 through the connecting hole 42 of the second valve core 4, flows into the first chamber 17 and the first pressure-bearing groove 24 of the first valve core 2 through the flow hole 16, and then flows into the second chamber 18 and the second pressure-bearing groove 25 through the first flow hole 23. When the pressure of the second pressure-bearing surface 22 is greater than the pressure of the first pressure-bearing surface 21, the fluid pushes the first valve core 2 to move downward, and the first valve core 2 is separated from the inner wall surface of the first valve cavity 14 away from the inlet 11 so that the fluid flows to the first outlet 12. In this process, the communication opening of the first valve core 2 can be adjusted by the change of the pressure difference between the first pressure-bearing surface 21 and the second pressure-bearing surface 22. At the same time, when different currents are supplied to the drive assembly 6, the opening and closing size of the first valve core 2 (i.e., the connection opening) can be adjusted to control the flow size, thereby controlling the damping force (the flow path of the oil is as follows Figure 7 (indicated by arrow A).

[0081] like Figure 8 As shown, when the shock absorber compresses or restores the piston rod at high speed, the flow rate of oil through the valve 100 is relatively large. After passing through the one-way valve plate, the oil flows into the second valve cavity 15, and then flows into the second valve core 4 through the connecting hole 42 of the second valve core 4, flows into the first chamber 17 and the first pressure-bearing groove 24 of the first valve core 2 through the flow hole 16, and then flows into the second chamber 18 and the second pressure-bearing groove 25 through the first flow hole 23. When the pressure of the second pressure-bearing surface 22 is greater than the pressure of the first pressure-bearing surface 21 or when the drive assembly 6 is working, the first valve core 2 moves downward, and the first valve core 2 is separated from the inner wall surface of the first valve cavity 14 away from the inlet 11 so that the fluid flows to the first outlet 12 (the flow path of the oil is shown in FIG. Figure 8 Because the piston rod is compressed or restored quickly, the flow and pressure flowing through the valve 100 are relatively large. Under the pressure of the oil, the second valve core 4 will be opened, and the size of the opening and closing can be adjusted by the size of the pressure to control the flow, thereby controlling the damping force (the flow path of the oil is as shown in FIG. Figure 8 (indicated by arrow B).

[0082] The shock absorber (not shown) according to the second embodiment of the utility model comprises the valve 100 according to the first embodiment.

[0083] According to the shock absorber of the second embodiment of the utility model, by adopting the above-mentioned valve 100, the valve 100 can be applicable to different working states of the shock absorber, which is beneficial to control and adjust the damping force and improve the performance of the shock absorber.

[0084] The chassis according to the third aspect of the utility model (not shown) comprises the shock absorber according to the second aspect.

[0085] According to the chassis of the embodiment of the third aspect of the utility model, by adopting the above-mentioned shock absorber, the vibration reduction performance is good, thereby improving the performance of the chassis.

[0086] The vehicle according to the fourth embodiment of the utility model (not shown) comprises the valve 100 according to the first embodiment, or the shock absorber according to the second embodiment, or the chassis according to the third embodiment.

[0087] According to the vehicle of the fourth aspect of the present utility model, the driving comfort of the vehicle can be improved by adopting the above-mentioned valve 100, or shock absorber or chassis.

[0088] The other structures and operations of the shock absorber, chassis and vehicle according to the embodiment of the utility model are well known to those skilled in the art and will not be described in detail here.

[0089] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 invention.

[0090] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0091] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A valve, characterized in that: include: a valve body, wherein the valve body is formed with an inlet and at least one first outlet; A drive assembly, wherein the drive assembly is arranged on the valve body; a first valve core, wherein the first valve core is arranged in the valve body, the driving assembly cooperates with the first valve core, the first valve core is movable between a first position and a second position, the driving assembly drives the first valve core to move in the direction of the second position, the first valve core divides the interior of the valve body into a first chamber and a second chamber, a first flow hole is formed on the first valve core, the first chamber and the second chamber are connected through the first flow hole, the first chamber is connected with the inlet, when the first valve core is located at the first position, the first valve core blocks the connection between the second chamber and the outlet, the first valve core has a first pressure-bearing surface and a second pressure-bearing surface, a side surface of the first valve core facing the first chamber is configured as the first pressure-bearing surface, a side surface of the first valve core facing the second chamber is configured as the second pressure-bearing surface, and a pressure-bearing area of ​​the second pressure-bearing surface is greater than a pressure-bearing area of ​​the first pressure-bearing surface; A first elastic reset member is disposed in the valve body, the first elastic reset member is stopped between the first valve core and the inner wall surface of the valve body, and the first elastic reset member always pushes the first valve core toward the first position.

2. The valve according to claim 1, characterized in that The first valve core is configured such that when the pressure difference between the pressure on the second pressure-bearing surface and the pressure on the first pressure-bearing surface changes, the communication opening between the inlet and the first outlet through the first valve core changes to adjust the flow rate of the first outlet.

3. The valve according to claim 1, characterized in that A first pressure-bearing groove is formed on a surface of one side of the first valve core adjacent to the inlet, the first pressure-bearing groove and the valve body define the first chamber, and the inner wall surface of the first pressure-bearing groove constitutes at least a part of the first pressure-bearing surface; A second pressure-bearing groove is formed on a surface of the first valve core at a side away from the inlet, the second pressure-bearing groove and the valve body define the second chamber, and the inner wall surface of the second pressure-bearing groove constitutes at least a part of the second pressure-bearing surface; Two ends of the first flow hole penetrate through the bottom wall of the first pressure-bearing groove and the bottom wall of the second pressure-bearing groove respectively.

4. The valve according to claim 1, characterized in that A guide hole is formed on the valve body; The first valve core is provided with a guide column extending along the moving direction of the first valve core, and the guide column is movably fitted in the guide hole.

5. The valve according to claim 4, characterized in that The first elastic reset member is sleeved on the guide column, and the first elastic reset member is stopped between the first pressure-bearing surface and the inner wall of the valve body.

6. The valve according to any one of claims 1 to 5, characterized in that: The valve body comprises a first valve cavity, the inlet is connected to the first valve cavity, the first outlet is formed on the side wall of the first valve cavity, the first valve core is movably arranged in the first valve cavity, and a side surface of the first valve core away from the inlet is often stopped against a side surface of the first valve cavity away from the inlet to cut off the connection between the inlet and the first outlet.

7. The valve according to claim 6, characterized in that The first valve core has a first sliding sealing portion; The first valve chamber comprises: a first sub-valve chamber, the first sub-valve chamber being in communication with the inlet, the first sliding sealing portion being in sliding sealing cooperation with the first sub-valve chamber; A second sub-valve chamber, wherein the second sub-valve chamber is arranged on a side of the first sub-valve chamber away from the inlet, the first outlet is formed on a side wall of the second sub-valve chamber, and a side surface of the first valve core away from the inlet is often stopped against a side surface of the second sub-valve chamber away from the inlet to cut off the connection between the inlet and the first outlet.

8. The valve according to claim 6, characterized in that The valve body further comprises a second valve cavity, the second valve cavity is communicated with the first valve cavity, the inlet is formed on the second valve cavity, and at least one second outlet is formed on the second valve cavity; The valve comprises: A second valve core, the second valve core is movably disposed in the second valve cavity, the second valve core and the inner wall of the second valve cavity on the side away from the first valve core are often stopped to cut off the connection between the inlet and the second outlet, and when the second valve core is separated from the inner wall of the second valve cavity on the side away from the first valve core, the inlet and the second outlet are connected.

9. The valve according to claim 8, characterized in that The second valve core has a second sliding sealing portion, and the second sliding sealing portion is slidably sealed with the second valve cavity.

10. The valve according to claim 8, characterized in that A communication hole is formed on the second valve core, and the inlet is connected with the second valve cavity through the communication hole; A cross-sectional area of ​​the first outlet is larger than a cross-sectional area of ​​the communication hole.

11. The valve according to claim 8, characterized in that include: A second elastic return member is disposed between the second valve core and an inner wall of the second valve cavity on a side away from the inlet.

12. The valve according to claim 8, characterized in that The cross-sectional area of ​​the second outlet is greater than the cross-sectional area of ​​the first outlet.

13. A shock absorber, characterized in that: Comprising a valve according to any one of claims 1-12.

14. A chassis, characterized in that: Comprising a vibration damper according to claim 13.

15. A vehicle, characterized in that: Comprising a valve according to any one of claims 1 to 12, or a shock absorber according to claim 13, or a chassis according to claim 14.

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