Frequency response valve, shock absorber and vehicle

Abstract

The utility model provides a frequency response valve, a shock absorber and a vehicle. The frequency response valve comprises a valve seat, a connecting cover, an elastic component and a pre-tightening piece, the connecting cover is connected to the valve seat. The elastic component is located on one side of the connecting cover and has a first position and a second position. When the elastic component is located at the first position, the connecting cover and the elastic component are sealed; when the elastic component is located at the second position, a first flow channel is formed between the connecting cover and the elastic component; the pre-tightening piece is located at the end, away from the connecting cover, of the elastic component, movably connected with the valve seat and used for adjusting the pre-tightening force of the elastic component. According to the frequency response valve, the shock absorber and the vehicle, the force values of the elastic components of all the frequency response valves can be adjusted to be consistent, and then the probability that damping force deviation occurs to the whole shock absorber can be reduced.

Description

Technical Field

[0001] This application relates to the field of valves, and more particularly to a frequency-response valve, a shock absorber, and a vehicle. Background Technology

[0002] Current vehicles often incorporate shock absorbers with frequency-response valves. When the frequency of the valve's up-and-down movement changes, the flow rate through the valve changes, and the shock absorber's damping changes accordingly. However, due to differences in valve plate material, manufacturing dimensions, and methods, the force values ​​of the elastic components in frequency-response valves are not very consistent, leading to deviations in the shock absorber's damping force. Utility Model Content

[0003] This application provides a frequency response valve, a shock absorber, and a vehicle capable of adjusting the consistency of the force value of elastic components.

[0004] To achieve the above objectives, in a first aspect, this application provides a frequency-responsive valve, which includes a valve seat and a connecting cover, a spring member, and a pre-tightening member located within the valve seat; the connecting cover is connected to the valve seat, and the spring member is located on one side of the connecting cover and has a first position and a second position; when the spring member is in the first position, there is a seal between the connecting cover and the spring member; when the spring member is in the second position, there is a first flow channel between the connecting cover and the spring member; the pre-tightening member is located at the end of the spring member away from the connecting cover and is movably connected to the valve seat in the spring direction of the spring member, for adjusting the pre-tightening force of the spring member.

[0005] In some embodiments of this application, the preload member includes: a connecting portion movably connected to the valve seat; and a mating portion connected to the end of the connecting portion away from the valve seat; wherein the mating portion can drive the connecting portion to move relative to the valve seat in the axial direction, for adjusting the preload force of the elastic member.

[0006] In some embodiments of this application, the mating part has a protrusion that protrudes from the connecting part in the radial direction of the valve seat; the frequency response valve further includes: a positioning baffle located on the surface of the connecting part near the mating part; the positioning baffle is hollow, and the inner wall of the positioning baffle is connected to one end of the mating part near the connecting part.

[0007] In some embodiments of this application, the frequency response valve further includes: a first seal, disposed around the mating portion, and abutting against the positioning baffle and the mating portion respectively.

[0008] In some embodiments of this application, the connecting part and the valve seat are threaded together.

[0009] In some embodiments of this application, the elastic member includes: a movable component located on one side of the connecting cover; and an elastic element located between the movable component and the pre-tightening element; wherein the movable component is axially movable along the valve seat, and when the elastic member is in a first position, the connecting cover and the movable component are sealed; when the elastic member is in a second position, a first flow channel is formed between the connecting cover and the movable component.

[0010] In some embodiments of this application, the active component includes: a first valve plate located on the side close to the connecting cover; and a support member located on the side of the first valve plate away from the connecting cover and fixedly connected to the first valve plate; wherein, when the elastic member is in a first position, the connecting cover and the first valve plate are sealed; when the elastic member is in a second position, a first flow channel is formed between the connecting cover and the first valve plate.

[0011] In some embodiments of this application, the valve seat includes a limiting cavity; wherein, the first valve plate is located on the side of the limiting member near the connecting cover, the support member is located in the limiting cavity and can move along the axial direction of the valve seat within the limiting cavity, and the limiting cavity is used to limit the range of movement of the support member in the axial direction of the valve seat.

[0012] In some embodiments of this application, the support member is in radial contact with the inner wall of the limiting cavity in the valve seat, and the support member is movable on the inner wall of the limiting cavity along the axial direction of the valve seat.

[0013] In some embodiments of this application, the frequency response valve further includes a third seal located between the support and the inner wall of the limiting cavity.

[0014] In some embodiments of this application, the support further includes a sealing groove, one opening of which faces the inner wall of the limiting cavity, and a third seal is located within the sealing groove.

[0015] In some embodiments of this application, the support member includes a first contact portion and / or a second contact portion, the first contact portion and the second contact portion are spaced apart in a first direction and respectively contact the inner wall of the limiting cavity, and the sealing groove is located between the first contact portion and the second contact portion;

[0016] The first contact portion and / or the second contact portion are in line contact with the limiting member.

[0017] In some embodiments of this application, the valve seat further includes a clearance surface facing the first valve piece, the clearance surface being away from the limiting cavity and inclined relative to the first valve piece; the valve seat also has a clearance space, the clearance space being spaced apart from the limiting cavity and used to allow the first valve piece to move axially in the valve seat.

[0018] In some embodiments of this application, the angle of inclination of the avoidance surface relative to the first valve plate is an acute angle.

[0019] In some embodiments of this application, the first valve plate includes at least two sub-valve plates, which are stacked in the direction of movement of the active component.

[0020] In some embodiments of this application, the sub-valve plate near the connecting cover has a first dimension in the radial direction of the valve seat; the sub-valve plate away from the connecting cover has a second dimension in the radial direction of the valve seat; wherein the first dimension is larger than the second dimension.

[0021] In some embodiments of this application, the valve seat further includes a limiting member, which includes a first limiting portion and a second limiting portion. The second limiting portion extends away from the first valve plate and extends radially from the first limiting portion toward the center of the limiting cavity along the valve seat. One end of the first limiting portion away from the second limiting portion bends toward the central axis of the valve seat, and the first limiting portion and the second limiting portion surround to form a limiting cavity. The first limiting portion restricts the range of movement of the support member toward the connecting cover, and the second limiting portion restricts the range of movement of the support member toward the pre-tightening member.

[0022] In some embodiments of this application, the active component further includes a second valve plate, which is connected to the side of the support member away from the first valve plate and abuts against the elastic member to ensure the consistency of the elastic force of the elastic member.

[0023] In some embodiments of this application, one end of the support member near the first limiting portion protrudes from the second valve plate, and the size of the portion of the support member protruding from the second valve plate is greater than or equal to the size of the second limiting portion in its extending direction.

[0024] In some embodiments of this application, the frequency response valve further includes: a connector, including a connecting body and a protrusion, the protrusion being connected to the connecting body and extending radially outward from the outer wall of the connecting body along the valve seat; wherein, the end of the first valve plate near the connecting body overlaps the protrusion, and the second valve plate is connected to the connector.

[0025] In some embodiments of this application, the support member and the connector are fixedly connected.

[0026] In some embodiments of this application, the connector has a second flow channel, the cover has a first cavity, the valve seat has a second cavity, and the pre-tightening member has a third cavity; wherein, the first cavity is connected to the second flow channel, the second flow channel is connected to the second cavity, the second cavity is connected to the third cavity, and the elastic member is located in the second cavity.

[0027] In some embodiments of this application, a pressure relief channel is also provided between the valve seat and the connecting cover; when the elastic member is in the first position, the first cavity is connected to the first flow channel, the first flow channel is connected to the pressure relief channel, and the fluid medium flows out from the first cavity, the first flow channel and the pressure relief channel; when the elastic member is in the second position, the fluid medium flows out from the first cavity, the second flow channel, the second cavity and the third cavity.

[0028] In some embodiments of this application, the frequency response valve further includes a support seat located in the second cavity and connected to the pre-tightening member, and an elastic member sleeved on the support seat.

[0029] In some embodiments of this application, the support has a fourth cavity that connects the second cavity and the third cavity.

[0030] In some embodiments of this application, the frequency response valve further includes a second seal located between the support and the inner wall of the second cavity.

[0031] In some embodiments of this application, the middle section of the second flow channel has a third dimension in the radial direction of the valve seat, and the two ends of the second flow channel have a fourth and a fifth dimension in the axial direction of the valve seat, respectively; wherein the third dimension is smaller than the fourth dimension and smaller than the fifth dimension.

[0032] In some embodiments of this application, the middle section of the third cavity has a sixth dimension in the radial direction of the valve seat, and the two ends of the third cavity have a seventh dimension and an eighth dimension in the radial direction of the valve seat, respectively, wherein the sixth dimension is smaller than the seventh dimension and the eighth dimension.

[0033] In some embodiments of this application, the connecting cover and the elastic member are in line contact.

[0034] Secondly, this application also provides a shock absorber, which includes the frequency response valve as described above.

[0035] Thirdly, this application also provides a vehicle that includes the frequency response valve or the shock absorber described above.

[0036] This application provides a frequency response valve, a shock absorber, and a vehicle. The frequency response valve includes a valve seat and a connecting cover, a spring member, and a preload member located within the valve seat. The connecting cover is connected to the valve seat, and the spring member is located on one side of the connecting cover and has a first position and a second position. When the spring member is in the first position, there is a seal between the connecting cover and the spring member. When the spring member is in the second position, there is a first flow channel between the connecting cover and the spring member. The preload member is located at the end of the spring member away from the connecting cover and is movably connected to the valve seat to adjust the preload force of the spring member. This application allows the magnitude of the preload force of the spring member to be adjusted through the preload member, thereby aligning the force values ​​of the spring members in each frequency response valve and reducing the probability of damping force deviation in the shock absorber.

[0037] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0038] 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.

[0039] 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.

[0040] Figure 1A A cross-sectional view of a frequency-response valve provided for some exemplary embodiments of this application.

[0041] Figure 1B for Figure 1A The exploded view of the frequency response valve is shown.

[0042] Figure 2 This is a schematic diagram of the medium flow direction of a frequency response valve.

[0043] Figure 3 for Figure 1A The diagram shows a three-dimensional representation of the valve seat.

[0044] Figure 4 for Figure 1A The diagram shows a cross-sectional view of the valve seat of a frequency response valve.

[0045] Figure 5 for Figure 2 The cross-sectional view shown is of the cover.

[0046] Figure 6 for Figure 2 The cross-sectional view of the support shown.

[0047] Figure 7 for Figure 2 The cross-sectional view of the second valve plate shown.

[0048] Figure 8 for Figure 2 The cross-sectional view of the connector shown.

[0049] Figure 9 This is a schematic diagram of a shock absorber module provided for some exemplary embodiments of this application.

[0050] Figure 10 A schematic diagram of a vehicle module provided for some exemplary embodiments of this application.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1000, Vehicle; 1100, Shock absorber; 100, Frequency response valve; 10, Valve seat; 20, Connecting cover; 30, Elastic component; 40, Preload; 50, Connecting component; 60, Support; Z, Axial; X, Radial;

[0053] 11. Valve seat body; 111. First main body part; 112. Second main body part; 1121. Step; 113. First receiving cavity; 114. Second receiving cavity; 115. Second cavity; 12. Limiting member; 121. Limiting cavity; 122. First limiting part; 123. Second limiting part; 13. Third receiving cavity; 14. Clearance space; 1221. Clearance surface; 1222. Inner surface;

[0054] 21. Connecting cover body; 22. First cavity; 211. End face; 212. Guide surface; 23. First flow channel; 24. Pressure relief channel;

[0055] 310. Moving component; 320. Elastic element; 31. First valve plate; 32. Support member; 33. Second valve plate; 311. First sub-valve plate; 312. Second sub-valve plate; 321. Support body; 322. Sealing groove; 3211. First contact part; 3212. Second contact part; 324. Third sealing element;

[0056] 41. Connecting part; 42. Mating part; 43. Positioning baffle; 44. Third cavity; 441. First sub-cavity; 442. Second sub-cavity; 443. Third sub-cavity; 45. First sealing element;

[0057] 51. Connecting body; 52. Protrusion; 53. Second flow channel; 531. First sub-flow channel; 532. Second sub-flow channel; 533. Third sub-flow channel;

[0058] 61. Support body; 62. Protruding column; 63. Fourth cavity; 64. Second sealing element. Detailed Implementation

[0059] 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.

[0060] Please see Figures 1A to 8This application provides a frequency response valve 100, which includes a valve seat 10 and a connecting cover 20, a spring member 30, and a preload member 40 located within the valve seat 10. The connecting cover 20 is connected to the valve seat 10, and the spring member 30 is located on one side of the connecting cover 20 and has a first position and a second position. When the spring member 30 is in the first position, the connecting cover 20 and the spring member 30 are sealed, and the frequency response valve 100 is closed. When the spring member 30 is in the second position, a first flow channel 23 is formed between the connecting cover 20 and the spring member 30, and the frequency response valve 100 is open. The preload member 40 is located at the end of the spring member 30 away from the connecting cover 20 and is movably connected to the valve seat 10 in the spring direction of the spring member 30, for adjusting the preload force of the spring member 30.

[0061] The frequency response valve provided in this application can adjust the magnitude of the preload force generated on the elastic member 30 through the preload member 40, thereby adjusting the force value of the elastic member 30 of each frequency response valve 100 to be consistent, thereby reducing the probability of damping force deviation in the entire shock absorber.

[0062] Please refer to it again. Figure 1A , Figure 3 and Figure 4 The valve seat body 11 includes a first body portion 111 and a second body portion 112. The first body portion 111 is connected to the second body portion 112, and the second body portion 112 protrudes from the first body portion 111 in the radial direction X of the valve seat 10.

[0063] In some embodiments of this application, the first main body portion 111 and the second main body portion 112 can be two parts or integrally formed. Having the first main body portion 111 and the second main body portion 112 as two parts facilitates assembly.

[0064] Please refer to it again. Figure 3 and Figure 4 The valve seat 10 also has a first receiving cavity 113, a second receiving cavity 114, a second cavity 115, and a third receiving cavity 13. The first receiving cavity 113 is formed by a first main body portion 111, and the second receiving cavity 114, the second cavity 115, and the third receiving cavity 13 are all formed by a second main body portion 112. The first receiving cavity 113 communicates with the third receiving cavity 13, the third receiving cavity 13 communicates with the second receiving cavity 114, and the second receiving cavity 114 communicates with the second cavity 115. The first receiving cavity 113 is used to receive the connecting cover 20, the third receiving cavity 13 is used to receive the connecting member 50 (see below) and the limiting member 12 (see below), the second cavity 115 is used to receive the elastic member 320, and the second receiving cavity 114 is used to receive the pre-tightening member 40.

[0065] Please refer to it again. Figure 1A , Figure 2 and Figure 4The second main body 112 has a step 1121, and the valve seat 10 also includes a limiting member 12, which extends from the step 1121 along the axial direction Z of the valve seat 10.

[0066] The limiting member 12 surrounds to form a limiting cavity 121, and a portion of the elastic member 30 is housed within the limiting cavity 121. The limiting member 12 (limiting cavity 121) is used to limit the range of motion of the portion of the elastic member 30 housed within the limiting cavity 121 in the axial Z direction of the valve seat 10.

[0067] In this embodiment, the limiting member 12 is located within the second receiving cavity 114. A clearance space 14 exists between the limiting member 12 and the second main body 112 of the valve seat 10. That is, the clearance space 14 is spaced apart from the limiting cavity 121. The limiting member 12 has a clearance surface 1221 facing the elastic member 30. That is, the clearance surface 1221 is away from the limiting cavity 121 and inclined relative to the elastic member 30. The clearance space 14 is used to allow the first valve piece 31 to move axially in the valve seat 10. This facilitates the tilting of the first valve piece 31 (see below) of the elastic member 30, thereby reducing damping during valve opening and increasing the valve opening response speed. The tilt angle of the clearance surface 1221 determines the valve opening angle θ. In other words, the arrangement of the clearance surface 1221 controls the valve opening angle θ of the frequency response valve 100.

[0068] When the frequency response valve 100 is closed, a portion of the first valve plate 31 is in contact with the inner surface 1222 of the first limiting portion 122, and another portion protrudes from the first limiting portion 122, with a protrusion height of H1. H1 is the maximum distance the first valve plate 31 can move in the axial direction Z of the valve seat 10. Correspondingly, when the frequency response valve 100 is closed, the vertical distance H2 from the second valve plate 33 to the valve seat 10 is the maximum distance the second valve plate 33 can move in the axial direction Z of the valve seat 10. H2 is greater than H1, and the range of H2 is 0.6mm to 0.8mm.

[0069] Please refer to it again. Figure 1A , Figure 2 and Figure 4In some embodiments of this application, the limiting member 12 includes a first limiting portion 122 and a second limiting portion 123. The second limiting portion 123 extends from the first limiting portion 122 along the radial direction X of the valve seat 10 toward the center of the limiting cavity 121, away from the first limiting portion 122 (see below, a part of the elastic member 30). One end of the first limiting portion 122 away from the second limiting portion 123 bends toward the central axis of the valve seat 10. That is, the orthographic projection of the end of the first limiting portion 122 away from the second limiting portion 123 on the second main body 112 at least partially falls on the second limiting portion 123. The first limiting portion 122 and the second limiting portion 123 surround to form the limiting cavity 121. The first limiting portion 122 restricts the range of movement of the support member 32 (see below, a part of the elastic member 30) toward the connecting cover 20, and the second limiting portion 123 restricts the range of movement of the support member 32 toward the preload member 40.

[0070] In this embodiment, the inclination angle θ of the clearance surface 1221 relative to the first valve plate 31 is an acute angle. The vertical distance from the end of the clearance surface 1221 near the valve seat 10 to the first valve plate 31 (see below, part of the elastic member 30) is less than the vertical distance from the end of the clearance surface 1221 away from the valve seat 10 to the first valve plate 31 (see below, part of the elastic member 30). This ensures that when the frequency response valve 100 is opened, the end of the first valve plate 31 (see below, part of the elastic member 30) away from the valve seat 10 can be tilted away from the connecting cover 20 under hydraulic action to form a first flow channel 23 with an opening facing the valve seat 10, ensuring that the fluid medium can flow from the first flow channel 23 into the pressure relief channel 24 (see below).

[0071] The clearance surface 1221 is the surface of the first limiting part 122 facing the first valve plate 31 (see below, which is part of the elastic member 30).

[0072] The clearance surface 1221 is either curved or flat. In this embodiment, the clearance surface 1221 is an arc surface, and the center of the circle containing the arc surface is away from the first valve plate 31 (see below, which is part of the elastic member 30).

[0073] In some embodiments of this application, the first limiting part 122 further includes an inner side surface 1222, which and the avoidance surface 1221 are two surfaces of the first limiting part 122 that are disposed opposite to each other.

[0074] In this embodiment, the inner surface 1222 is curved.

[0075] Please refer to it again. Figure 1A , Figure 2 and Figure 5 The cover 20 is disposed in the first receiving cavity 113, and a pressure relief channel 24 is also provided between the cover 20 and the first main body 111.

[0076] The connecting cover 20 includes a connecting cover body 21, which surrounds and forms a first cavity 22 for containing liquid media.

[0077] In this embodiment, the liquid medium is oil.

[0078] In this embodiment, the dimension of the end of the first cavity 22 closest to the elastic member 30 is larger than the dimension of the end of the first cavity 22 furthest from the elastic member 30. That is, the change in the dimension of the first cavity 22 can adjust the flow rate of the liquid medium to a certain extent.

[0079] In some embodiments of this application, the connecting cover 20 and the elastic member 30 are in line contact, which can increase the opening speed of the frequency response valve 100.

[0080] Specifically, the contact between the cover 20 and the elastic member 30 is a curved surface. Preferably, the contact between the cover 20 and the elastic member 30 is a spherical surface, but it can also be an ellipsoid, hyperboloid, etc.

[0081] For example, the end face 211 of the end of the connecting cover body 21 of the connecting cover 20 that contacts the elastic member 30 is a curved surface, preferably a spherical surface, so as to reduce sliding resistance and make the action faster.

[0082] Please refer to it again. Figure 1A , Figure 2 and Figure 5 In some embodiments of this application, the cover body 21 also has a flow guiding surface 212, which is connected to the end face 211. The angle between the flow guiding surface 212 and the elastic member 30 is an acute angle. The flow guiding surface 212 is conducive to guiding the liquid medium from the first cavity 22 into the first flow channel 23.

[0083] The connecting cover 20 is connected to the connecting rod.

[0084] In this embodiment, the connecting cover 20 can be a threaded connecting cover.

[0085] Please refer to it again. Figure 1A and Figure 2In some embodiments of this application, the elastic member 30 includes a movable component 310 and an elastic element 320. The movable component 310 is located between the connecting cover 20 and the elastic element 320, and the elastic element 320 is located between the movable component 310 and the pre-tightening member 40. When the elastic member 30 is in the first position, the connecting cover 20 and the movable component 310 are sealed. When the elastic member 30 is in the second position, a first flow channel 23 is formed between the connecting cover 20 and the movable component 310. During low-frequency operation, the pre-tightening force generated by the pre-tightening member 40 can be transmitted to the movable component 310 through the elastic element 320. Under the action of the pre-tightening force, the movable component 310 moves along the axial direction Z of the valve seat 10 towards the connecting cover 20 to the first position and abuts against the connecting cover 20, causing the frequency response valve 100 to close. When operating at high frequency, the force on the upper part of the movable component 310 of the elastic member 30 is greater than the force on the lower part of the movable component 310 of the elastic member 30. The movable component 310 will move downward, the elastic member 320 will be further compressed, the frequency response valve 100 will open, and the first flow channel 23 between the movable component 310 and the connecting cover 20 will open, allowing for pressure relief.

[0086] Please refer to it again. Figure 1A and Figure 2 In some embodiments of this application, the movable component 310 includes a first valve plate 31 and a support member 32. The first valve plate 31 is located on one side of the connecting cover 20, and the support member 32 is located on the side of the first valve plate 31 away from the connecting cover 20 and is fixedly connected to the first valve plate 31. When the elastic member 30 is in a first position, the connecting cover 20 and the first valve plate 31 are sealed; when the elastic member 30 is in a second position, a first flow channel 23 is formed between the connecting cover 20 and the first valve plate 31. The support member 32 supports the first valve plate 31, and both can move along the axial direction Z of the valve seat 10 as the elastic member 320 moves, and cooperate with the elastic member 320 to realize the opening and closing of the frequency-responsive valve 100.

[0087] In some embodiments of this application, the first valve plate 31 is located on the side of the limiting member 12 near the connecting cover 20, and the support member 32 is located in the limiting cavity 121 and can move along the axial direction Z of the valve seat 10 within the limiting cavity 121.

[0088] Please refer to it again. Figure 1A and Figure 2 In some embodiments of this application, the first valve plate 31 includes at least two sub-valve plates, which are stacked in the axial direction Z of the valve seat 10. By using at least two sub-valve plates stacked to form the first valve plate 31, the rigidity of the first valve plate 31 can be enhanced to a certain extent to adapt to different road conditions.

[0089] In some embodiments of this application, the end of the sub-valve plate near the cover 20 that is near the valve seat 10 protrudes from the end of the sub-valve plate away from the cover 20 that is near the valve seat 10. That is, the sub-valve plates of the first valve plate 31 are stacked in a pyramid-like shape, so that when the frequency response valve 100 opens, the lower sub-valve plates can avoid the upper sub-valve plates to ensure smooth valve opening.

[0090] Please refer to it again. Figure 1A and Figure 2 In this embodiment, the first valve plate 31 includes a first sub-valve plate 311 and a second sub-valve plate 312 stacked together. The first sub-valve plate 311 is disposed close to the connecting cover 20, and the second sub-valve plate 312 is located on the side of the first sub-valve plate 311 away from the connecting cover 20. The end of the first sub-valve plate 311 near the valve seat 10 protrudes beyond the end of the second sub-valve plate 312 near the valve seat 10. The rigidity of the first sub-valve plate 311 and the second sub-valve plate 312 may be the same or different.

[0091] In this embodiment, the thickness of the first sub-valve plate 311 in the axial direction Z of the valve seat 10 is less than the thickness of the second sub-valve plate 312 in the axial direction Z of the valve seat 10.

[0092] In some embodiments of this application, the support member 32 is in line contact with the limiting member 12 in the radial direction X of the valve seat 10, and the support member 32 can move on the limiting member 12 along the axial direction Z of the valve seat 10. The line contact between the support member 32 and the limiting member 12 is a sealing line contact, allowing for rapid up-and-down movement, which facilitates the opening of the first valve plate 31 (i.e., the first valve plate 31 moves away from the connecting cover 20, and the first flow channel 23 communicates with the first cavity 22). This improves the opening response speed of the frequency response valve 100, thereby enhancing the NVH (noise, vibration, and harshness) performance of the shock absorber and the vehicle.

[0093] In some embodiments of this application, the support member 32 and the limiting member 12 are in curved surface contact. Preferably, the support member 32 and the limiting member 12 are in spherical contact, but they can also be ellipsoidal, hyperboloid, etc.

[0094] Please refer to it again. Figure 1A and Figure 2 In some embodiments of this application, the frequency response valve 100 further includes a third seal 324 located between the support 32 and the limiting member 12. The third seal 324 can prevent hydraulic leakage when the support 32 moves axially Z along the valve seat 10.

[0095] In this embodiment, the third sealing element 324 is an O-ring.

[0096] Please refer to it again. Figure 1A and Figure 6 In some embodiments of this application, the support member 32 further includes a sealing groove 322, one opening of which faces the limiting member 12, and a third seal 324 is located within the sealing groove 322. Concealing the third seal 324 within the sealing groove 322 saves space in the radial direction X of the valve seat 10 and ensures that the third seal 324 does not affect the line contact between the support member 32 and the limiting member 12.

[0097] Please refer to it again. Figure 1A and Figure 6 In some embodiments of this application, the support member 32 includes a first contact portion 3211 and a second contact portion 3212. The first contact portion 3211 and the second contact portion 3212 are spaced apart along the axial direction Z of the valve seat 10 and respectively contact the limiting member 12 (the inner wall of the limiting cavity 121). The sealing groove 322 is located between the first contact portion 3211 and / or the second contact portion 3212. The first contact portion 3211 and / or the second contact portion 3212 are in line contact with the limiting member 12 (the inner wall of the limiting cavity 121). This line contact between the first contact portion 3211 and / or the second contact portion 3212 and the limiting member 12 (the inner wall of the limiting cavity 121) is a sealing line contact, allowing for rapid up-and-down movement. This facilitates more stable and faster movement of the support member 32 along the axial direction Z of the valve seat 10 on the limiting member 12, thereby improving the opening response speed of the frequency response valve 100.

[0098] In some embodiments of this application, the first contact portion 3211 and / or the second contact portion 3212 are in curved surface contact with the limiting member 12 (the inner wall of the limiting cavity 121). Preferably, the first contact portion 3211 and / or the second contact portion 3212 are in spherical contact with the limiting member 12 (the inner wall of the limiting cavity 121). It can also be an ellipsoid, hyperboloid, etc.

[0099] For example, the surfaces of the first contact portion 3211 and the second contact portion 3212 that contact the limiting member 12 are curved surfaces, so that the first contact portion 3211 and / or the second contact portion 3212 maintain line contact with the inner wall of the limiting cavity 121. The curved surface is preferably a spherical surface, which can reduce sliding resistance and make the operation faster.

[0100] The first contact part 3211 and the second contact part 3212 are in line contact with the limiting member 12. In addition, the third sealing member 324 is placed in the sealing groove 322, which achieves a three-layer seal and a good sealing effect.

[0101] In this embodiment, when the frequency response valve 100 is closed, a portion of the inner surface 1222 of the support member 32 facing the first limiting portion 122 contacts the inner surface 1222, and the two are substantially matched in shape. When the frequency response valve 100 is open, the side of the support member 32 away from the first valve plate 31 contacts the second limiting portion 123.

[0102] When the frequency response valve 100 is closed, the side of the support member 32 closest to the first valve plate 31 contacts the first limiting part 122, and the portion of the support member 32 connected to the first valve plate 31 protrudes from the first limiting part 122. Please refer again. Figure 1A , Figure 2 and Figure 7 In some embodiments of this application, the movable component 310 further includes a second valve plate 33, which is connected to the side of the support member 32 away from the first valve plate 31 and connected to the elastic member 320. The second valve plate 33 cooperates with the connecting member 50 (see below) to fix the support member 32. The second valve plate 33 is used to ensure the consistency of the elastic force of the elastic member 320. Specifically, the flatness of the end face of the elastic member 320, such as a spring, is often difficult to guarantee. The second valve plate 33 ensures that the spring does not tilt and maintains the direction of the spring force in the axial direction Z of the valve seat 10, thereby ensuring the consistency of the elastic force of the elastic member 320.

[0103] Please refer to it again. Figure 1A and Figure 2 In this configuration, one end of the support member 32 near the second limiting portion 123 protrudes from the second valve plate 33, and the dimension of the portion of the support member 32 protruding from the second valve plate 33 is greater than or equal to the dimension of the second limiting portion 123 in its extending direction. Thus, during the opening process of the frequency response valve 100, the second valve plate 33 can avoid the second limiting portion 123 to prevent the second valve plate 33 from affecting the opening of the frequency response valve 100.

[0104] In this embodiment, the second valve plate 33 is a flower valve, meaning that the shape of the second valve plate 33 is petal-shaped. When the elastic member 320 moves up and down along the axial Z direction of the valve seat 10, the second valve plate 33 can tightly adhere to the support member 32, preventing the elastic member 320 from tilting during movement and ensuring consistent clamping stiffness between the elastic member 320 and the connecting member 50. This guarantees consistent valve opening and also provides a flatness adjustment function.

[0105] Please refer to it again. Figure 1A and Figure 8 In some embodiments of this application, the frequency response valve 100 further includes a connector 50, which includes a connecting body 51 and a protrusion 52. The protrusion 52 is connected to the connecting body 51 and extends radially outward from the outer wall of the connecting body 51 along the valve seat 10. One end of the first valve plate 31 near the connecting body 51 overlaps the protrusion 52 and contacts the connecting body 51. The second valve plate 33 is connected to the connecting body 51. One end of the elastic member 320 is disposed around the connecting body 51, and the second valve plate 33 abuts against or is fixedly connected to the elastic member 320. The connector 50, in conjunction with the second valve plate 33, is used to fix the first valve plate 31 and the support member 32.

[0106] In some embodiments of this application, the support member 32 and the connector 50 are fixedly connected (e.g., welded together), and the first valve plate 31 is riveted to the connector 50. Thus, the first valve plate 31, the support member 32 and the connector 50 are integrated together to form an integrated body, which can be maintained at a certain position and height under the preload of the elastic member 320.

[0107] In some embodiments of this application, the dimension of the middle section of the second flow channel 53 in the axial Z direction of the valve seat 10 is smaller than the dimensions of both ends of the second flow channel 53 in the axial Z direction of the valve seat 10. That is, the middle section of the second flow channel 53 has a third dimension in the radial X direction of the valve seat 10, and the two ends of the second flow channel 53 have a fourth and a fifth dimension in the radial X direction of the valve seat 10, respectively; wherein the third dimension is smaller than the fourth dimension and smaller than the fifth dimension. In this way, the hydraulic pressure in the second cavity 115 can be maintained or controlled by adjusting the length and dimension of the middle section of the second flow channel 53.

[0108] For example, please refer again Figure 1A and Figure 8 The second flow channel 53 includes a first sub-flow channel 531, a second sub-flow channel 532, and a third sub-flow channel 533. The second sub-flow channel 532 connects the first sub-flow channel 531 and the third sub-flow channel 533. In the radial direction X of the valve seat 10, the dimension of the second sub-flow channel 532 is smaller than the dimensions of the first sub-flow channel 531 and the third sub-flow channel 533. The lengths of the second sub-flow channel 532 and the third sub-flow channel 533 in the axial direction X of the valve seat 10 are both smaller than the length of the first sub-flow channel 531 in the axial direction X of the valve seat 10. This facilitates the maintenance or regulation of the hydraulic pressure within the second cavity 115.

[0109] Please refer to it again. Figure 1A In some embodiments of this application, the frequency response valve 100 further includes a support base 60 located within the second cavity 115, and the elastic element 320 is sleeved on the support base 60. The support base 60 is used to connect the elastic element 320, thereby securing the elastic element 320 and providing a positioning function during installation of the elastic element 320.

[0110] In this embodiment, the elastic element 320 is a spring or other elastic component.

[0111] In some embodiments of this application, the support 60 has a fourth cavity 63, which connects the second cavity 115 and the third cavity 44. Providing the fourth cavity 63 on the support 60 facilitates the smooth flow of the liquid medium.

[0112] In this embodiment, the support base 60 includes a support base body 61 and a protrusion 62. The protrusion 62 is fixedly connected to the support base body 61 and extends along the axial direction Z of the valve seat 10 into the elastic member 320. One end of the elastic member 320 away from the movable component 310 is sleeved on the protrusion 62. The support base body 61 protrudes from the protrusion 62 and is at least partially attached to the inner wall of the second cavity 115.

[0113] In some embodiments of this application, the frequency response valve 100 further includes a second seal 64 located between the support 60 and the inner wall of the second cavity 115. The second seal 64 is used to prevent liquid medium from overflowing from the gap between the inner wall of the second cavity 115 and the support 60.

[0114] In this embodiment, the second sealing element 64 is an O-ring.

[0115] Please refer to it again. Figure 1A In some embodiments of this application, the preload member 40 includes a connecting portion 41 and a mating portion 42. The connecting portion 41 is located inside the valve seat 10, and a portion of the mating portion 42 is located inside the connecting portion 41. The mating portion 42 can drive the connecting portion 41 to move relative to the valve seat 10 to adjust the preload force of the elastic member 30.

[0116] In this embodiment, the connecting part 41 and the mating part 42 are threaded together.

[0117] In this embodiment, the preload 40 is a hydraulic locking nut, the connecting part 41 is the main body of the hydraulic locking nut, and the mating part 42 is the part of the hydraulic locking nut that facilitates the application of power. Of course, the preload 40 in this case is not limited to a hydraulic locking nut, but can also be other components or structures capable of achieving preload.

[0118] Please refer to it again. Figure 1A In some embodiments of this application, the valve seat 100 further includes a positioning baffle 43, which is connected to the valve seat 10 and cooperates with the protrusion to limit the axial travel of the preload member 40. The positioning baffle 43 is hollow, and its inner wall is connected to one end of the mating part 42 near the connecting part 41. When the mating part 42 is installed, the positioning baffle 43 also serves a positioning function.

[0119] Please refer to it again. Figure 1A In some embodiments of this application, the valve seat 100 further includes a first seal 45, which is disposed around the mating portion 42 and abuts against the positioning baffle 43 and the mating portion 42. The first seal 45 is used to seal the positioning baffle 43 and the mating portion 42.

[0120] In this embodiment, the first sealing element 45 is an O-ring.

[0121] The positioning baffle 43 and the first seal 45 assist the pre-tightening member 40 in hydraulic sealing. The first seal 45 prevents liquid from flowing out, and the positioning baffle 43 positions the pre-tightening member 40 to prevent it from tilting.

[0122] In some embodiments of this application, the dimension of the middle section of the third cavity 44 in the radial X direction of the valve seat 10 is smaller than the dimensions of both ends of the third cavity 44 in the radial X direction of the valve seat 10. That is, the middle section of the third cavity 44 has a sixth dimension in the radial X direction of the valve seat 10, and the two ends of the third cavity 44 have a seventh dimension and an eighth dimension in the axial Z direction of the valve seat 10, respectively, with the sixth dimension being smaller than the seventh dimension and the eighth dimension. Thus, the hydraulic pressure in the second cavity 115 can be maintained or controlled by adjusting the length and dimension of the middle section of the third cavity 44.

[0123] The third cavity 44 includes a first sub-cavity 441, a second sub-cavity 442, and a third sub-cavity 443. The second sub-cavity 442 connects the first sub-cavity 441 and the third sub-cavity 443. The dimension of the second sub-cavity 442 in the axial Z direction of the valve seat 10 is smaller than the dimensions of the first sub-cavity 441 and the third sub-cavity 443 in the axial Z direction of the valve seat 10. Thus, the second sub-cavity 442 serves as a liquid discharge channel, and the hydraulic pressure within the second cavity 115 can be maintained or adjusted by adjusting the length and dimension of the second sub-cavity 442.

[0124] Please refer to it again. Figure 2 In some embodiments of this application, when the frequency response valve 100 is operating at high frequency, and the hydraulic pressure in the first cavity 22 is greater than the hydraulic pressure in the second cavity 115 and the elastic force of the elastic member 320, the elastic member 320 is compressed. The elastic member 320 drives the second valve plate 33 to move downward, the second valve plate 33 drives the connecting member 50 to move downward, and the connecting member 50 drives the first valve plate 31 and the support member 32 to move downward. The first cavity 22 is connected to the first flow channel 23, the frequency response valve 100 opens, the elastic member 30 is in the first position, a portion of the fluid medium flows out from the first cavity 22, the first flow channel 23 and the pressure relief channel 24 to relieve pressure; another portion of the fluid medium flows out from the first cavity 22, the second flow channel 53, the second cavity 115, the fourth cavity 63 and the third cavity 44. Thus, when the frequency response valve 100 operates at high frequencies, i.e., when the vehicle is traveling on a rough road surface, the liquid medium can flow out from the first flow channel 23 and the pressure relief channel 24 to relieve pressure, which is equivalent to adding an extra flow channel. This reduces the damping force of the frequency response valve 100 and improves the overall vehicle comfort. When the vehicle returns to a flat road surface, the first valve plate 31 can quickly and tightly adhere to the connecting cover 20 to ensure normal vehicle operation.

[0125] Please refer to it again. Figure 2When the frequency response valve 100 operates at low frequency, the hydraulic pressure in the first chamber 22 is less than the hydraulic pressure in the second chamber 115 and the elastic force of the elastic element 320. The elastic element 320 pushes the first valve plate 31, the support member 32 and the second valve plate 33 to move closer to the connecting cover 20. The first valve plate 31 abuts against the connecting cover 20. The first chamber 22 is not connected to the first flow channel 23. The frequency response valve 100 closes the valve. The elastic element 30 is in the second position. The fluid medium flows out from the first chamber 22, the second flow channel 53, the second chamber 115, the fourth chamber 63 and the third chamber 44.

[0126] When the elastic member 30 is in the first and second positions, the pre-tightening member 40 has a pre-tightening force on the elastic member 30. Since the frequency response valve 100 is generally in the closed state, when the frequency response valve 100 is assembled, the pre-tightening member 40 provides a normal pre-tightening force to the elastic member 30, causing the elastic member 30 to move towards the connecting cover 20 along the axial direction Z of the valve seat 10 until the elastic member 30 abuts against the connecting cover 20, and the frequency response valve 100 closes.

[0127] Please see Figure 9 This application also provides a shock absorber 1100, which includes the frequency response valve 100 as described above.

[0128] Please see Figure 10 This application also provides a vehicle 1000, which includes the frequency response valve 100 as described above or the shock absorber 1100 as described above.

[0129] This application provides a frequency response valve 100, a shock absorber 1100, and a vehicle 1000. The frequency response valve 100 includes a valve seat 10 and a connecting cover 20, a spring member 30, and a preload member 40 located within the valve seat 10. The connecting cover 20 is connected to the valve seat 10, and the spring member 30 is located on one side of the connecting cover 20 and has a first position and a second position. When the spring member 30 is in the first position, the connecting cover 20 and the spring member 30 are sealed, and the frequency response valve 100 is closed. When the spring member 30 is in the second position, a first flow channel 23 is formed between the connecting cover 20 and the spring member 30, and the frequency response valve 100 is open. The preload member 40 is located at the end of the spring member 30 away from the connecting cover 20 and is movably connected to the valve seat 10 in the spring direction of the spring member 30 to adjust the preload force of the spring member 30. This application allows the preload force generated on the elastic member 30 to be adjusted by the preload member 40, thereby making the force value of the elastic member 30 of each frequency response valve 100 consistent, and thus reducing the probability of damping force deviation in the whole shock absorber 1100.

[0130] 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.

[0131] 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.

[0132] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0133] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Although the descriptions of each embodiment in this application have different focuses, and the parts not described in detail in a certain embodiment can be referred to the relevant embodiments in other embodiments, any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A frequency-responsive valve (100), characterized in that, Includes a valve seat (10) and a connecting cover (20), a spring member (30) and a preload member (40) located within the valve seat (10); The connecting cover (20) is connected to the valve seat (10); The elastic member (30) is located on one side of the connecting cover (20) and has a first position and a second position. When the elastic member (30) is in the first position, the connecting cover (20) and the elastic member (30) are sealed. When the elastic member (30) is in the second position, the connecting cover (20) and the elastic member (30) have a first flow channel (23). The pre-tightening member (40) is located at the end of the elastic member (30) away from the connecting cover (20) and is movably connected to the valve seat (10) for adjusting the pre-tightening force of the elastic member (30).

2. The frequency response valve (100) as described in claim 1, characterized in that, The preload (40) includes: The connecting part (41) is movably connected to the valve seat (10); and A mating part (42) is connected to the end of the connecting part (41) away from the valve seat (10); The mating part (42) can drive the connecting part (41) to move relative to the valve seat (10) in the axial (Z) direction, so as to adjust the preload of the elastic member (30).

3. The frequency response valve (100) as described in claim 2, characterized in that, The mating part (42) has a protrusion protruding from the connecting part (41) in the radial (X) direction of the valve seat (10), and the frequency response valve (100) further includes: A positioning baffle (43) is connected to the valve seat and cooperates with the protrusion to limit the axial travel of the preload (40).

4. The frequency response valve (100) as described in claim 3, characterized in that, The frequency response valve (100) further includes: A first sealing element (45) is disposed around the mating part (42) and abuts against the positioning baffle and the mating part (42) respectively.

5. The frequency response valve (100) as described in claim 2, characterized in that, The connecting part (41) and the valve seat (10) are threaded together.

6. The frequency response valve (100) as described in claim 1, characterized in that, The elastic member (30) includes: The active component (310) is located on one side of the connecting cover (20); and An elastic element (320) is located between the movable component (310) and the preload element (40); The movable component (310) is axially movable along the valve seat. When the elastic member (30) is in the first position, the connecting cover (20) and the movable component (310) are sealed. When the elastic member (30) is in the second position, the connecting cover (20) and the movable component (310) have the first flow channel (23).

7. The frequency response valve (100) as described in claim 6, characterized in that, The active component (310) includes: The first valve plate (31) is located on the side near the connecting cover (20); and The support member (32) is located on the side of the first valve plate (31) away from the connecting cover (20) and is fixedly connected to the first valve plate (31); When the elastic member (30) is in the first position, the connecting cover (20) and the first valve plate (31) are sealed; when the elastic member (30) is in the second position, the connecting cover (20) and the first valve plate (31) have the first flow channel (23).

8. The frequency response valve (100) as described in claim 7, characterized in that, The valve seat (10) also includes a limiting cavity (121); The support member (32) is located within the limiting cavity (121) and can move along the axial direction (Z) of the valve seat (10) within the limiting cavity (121). The limiting cavity (121) is used to limit the range of movement of the support member (32) in the axial direction (Z) of the valve seat (10).

9. The frequency response valve (100) as described in claim 8, characterized in that, In the radial (X) direction of the valve seat (10), the support (32) is in line contact with the inner wall of the limiting cavity (121), and the support (32) is movable along the axial (Z) direction of the valve seat (10) on the inner wall of the limiting cavity (121).

10. The frequency response valve (100) as claimed in claim 8, characterized in that, The frequency response valve (100) further includes a third seal (324) located between the support (32) and the inner wall of the limiting cavity (121).

11. The frequency response valve (100) as claimed in claim 10, characterized in that, The support member (32) further includes a sealing groove (322), the opening of which faces the inner wall of the limiting cavity (121), and the third sealing member (324) is located in the sealing groove (322).

12. The frequency response valve (100) as described in claim 11, characterized in that, The support member (32) includes a first contact portion (3211) and / or a second contact portion (3212); The first contact portion (3211) and the second contact portion (3212) are spaced apart in a first direction; The sealing groove (322) is located between the first contact portion (3211) and the second contact portion (3212); The first contact portion (3211) and / or the second contact portion (3212) are in contact with the inner wall line of the limiting cavity (121).

13. The frequency response valve (100) as described in claim 8, characterized in that, The valve seat also includes a clearance surface (1221) facing the first valve plate (31), the clearance surface (1221) being away from the limiting cavity (121) and inclined relative to the first valve plate (31); The valve seat also has a clearance space (14), which is spaced apart from the limiting cavity (121) and is used to allow the first valve plate (31) to move axially in the valve seat (10).

14. The frequency response valve (100) as described in claim 13, characterized in that, The angle of inclination of the clearance surface (1221) relative to the first valve plate (31) is an acute angle.

15. The frequency response valve (100) as claimed in claim 7, characterized in that, The first valve plate (31) includes at least two sub-valve plates, which are stacked in the direction of movement of the active component (310).

16. The frequency response valve (100) as claimed in claim 15, characterized in that, The sub-valve plate near the connecting cover (20) has a first dimension in the radial (X) direction of the valve seat (10); The sub-valve plate, located away from the connecting cover (20), has a second dimension in the radial (X) direction of the valve seat (10); Wherein, the first dimension is larger than the second dimension.

17. The frequency response valve (100) as claimed in claim 8, characterized in that, The valve seat (10) also includes: First limiting part (122); and The second limiting part (123) is located away from the first valve plate (31) and extends from the first limiting part (122) along the radial (X) direction of the valve seat (10) toward the center of the limiting cavity (121). The end of the first limiting part (122) away from the second limiting part (123) is bent toward the central axis of the valve seat. The first limiting part (122) and the second limiting part (123) surround to form the limiting cavity (121). The first limiting part (122) restricts the range of movement of the support member (32) toward the connecting cover (20), and the second limiting part (123) restricts the range of movement of the support member (32) toward the pre-tightening member (40).

18. The frequency response valve (100) as claimed in claim 17, characterized in that, The active component (310) further includes a second valve plate (33), which is connected to the side of the support member (32) away from the first valve plate (31) and abuts against the elastic member (320) to ensure the consistency of the elastic force of the elastic member (320).

19. The frequency response valve (100) as claimed in claim 18, characterized in that, The frequency response valve (100) further includes: The connector (50) includes a connecting body (51) and a protrusion (52), the protrusion (52) being connected to the connecting body (51) and extending outward from the outer wall of the connecting body (51) along the radial (X) direction of the valve seat (10); The first valve plate (31) is attached to the protrusion (52) at one end near the connecting body (51).

20. The frequency response valve (100) as claimed in claim 19, characterized in that, The support member (32) is fixedly connected to the connector (50), and the second valve plate (33) is connected to the connector (50).

21. The frequency response valve (100) as claimed in claim 19, characterized in that, The connector (50) has a second flow channel (53), the connecting cover (20) has a first cavity (22), the valve seat (10) has a second cavity (115), and the pre-tightening member (40) has a third cavity (44). The first cavity (22) is connected to the second flow channel (53), the second flow channel (53) is connected to the second cavity (115), the second cavity (115) is connected to the third cavity (44), and the elastic element (320) is located in the second cavity (115).

22. The frequency response valve (100) as claimed in claim 21, characterized in that, The valve seat (10) and the connecting cover (20) also have a pressure relief channel (24); When the elastic member (30) is in the first position, the first cavity (22) is connected to the first flow channel (23), the first flow channel (23) is connected to the pressure relief channel (24), and the fluid medium flows out from the first cavity (22), the first flow channel (23) and the pressure relief channel (24); When the elastic member (30) is in the first position and the second position, the fluid medium flows out from the first cavity (22), the second flow channel (53), the second cavity (115) and the third cavity (44).

23. The frequency response valve (100) as described in claim 21, characterized in that, The frequency response valve (100) further includes a support base (60), which is located in the second cavity (115) and connected to the pre-tightening member (40), and the elastic member (320) is sleeved on the support base (60).

24. The frequency response valve (100) as claimed in claim 23, characterized in that, The support base (60) has a fourth cavity (63) that connects the second cavity (115) and the third cavity (44).

25. The frequency response valve (100) as described in claim 23, characterized in that, The frequency response valve (100) further includes a second seal (64) located between the support (60) and the inner wall of the second cavity (115).

26. The frequency response valve (100) as claimed in claim 21, characterized in that, The middle section of the second flow channel (53) has a third dimension in the radial (X) direction of the valve seat (10); The two ends of the second flow channel (53) have a fourth and a fifth dimension respectively in the radial (X) direction of the valve seat (10); The third dimension is smaller than the fourth dimension and the fifth dimension.

27. The frequency response valve (100) as claimed in claim 21, characterized in that, The middle section of the third cavity (44) has a sixth dimension in the radial (X) direction of the valve seat (10); The two ends of the third cavity (44) have a seventh dimension and an eighth dimension respectively in the radial (X) direction of the valve seat (10); The sixth dimension is smaller than the seventh dimension and the eighth dimension.

28. The frequency-responsive valve (100) as described in any one of claims 1-27, characterized in that, The connecting cover (20) and the elastic member (30) are in line contact.

29. A shock absorber (1100), characterized in that, include: The frequency response valve (100) as described in any one of claims 1-28.

30. A vehicle (1000), characterized in that, include: The frequency response valve (100) as described in any one of claims 1-28 or the shock absorber (1100) as described in claim 29.

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