Shock absorber and vehicle

Abstract

The invention discloses a shock absorber and a vehicle, and the shock absorber comprises a piston which comprises a valve body; the flow regulating valve is arranged in the piston and comprises an overflow valve seat, an overflow valve body and an overflow valve plate, the overflow valve body is movably arranged in the piston, and the overflow valve plate is movably arranged between the overflow valve seat and the overflow valve body; wherein the valve body is provided with a sealing ring table, a sealing sinking groove is formed in the end, opposite to the overflow valve seat, of the overflow valve body, and the sealing ring table extends into the sealing sinking groove and is in dynamic sealing fit with the sealing sinking groove; a valve seat abutting ring table is arranged on the side, facing the overflow valve plate, of the overflow valve seat, the valve seat abutting ring table abuts against the overflow valve plate, and the inner diameter of the valve seat abutting ring table is larger than that of the sealing sinking groove. According to the shock absorber, the overflow valve plate and the overflow valve body can be pushed away more easily under the compression working condition, so that the damping force of the shock absorber can be adjusted conveniently.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority to Chinese patent application No. "202411402669.3" filed by BYD Co., Ltd. on September 30, 2024, entitled "Shock Absorber and Vehicle". Technical Field

[0002] The present invention relates to the technical field of vehicles, and in particular to a shock absorber and a vehicle. Background Art

[0003] The shock absorber in the related technology is usually provided with a flow regulating valve, and the overflow valve plate is movably arranged between the overflow valve seat and the overflow valve body to adjust the fluid flow of the flow regulating valve through the overflow valve plate, and the overflow valve plate can be used to assist in opening the flow regulating valve.

[0004] However, when the flow regulating valve needs to be opened, the overflow valve body needs to be moved away from the overflow valve seat. However, the flow regulating valve in the related technology has a large resistance to pushing the overflow valve plate open through the fluid, and the overflow valve plate is not easy to open, making it inconvenient to adjust the damping force of the shock absorber. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a shock absorber that is easier to push open the overflow valve plate and the overflow valve body in a compression condition to facilitate adjusting the damping force of the shock absorber.

[0006] The present invention also provides a vehicle having the shock absorber.

[0007] In order to achieve the above-mentioned purpose, a shock absorber is proposed according to a first aspect embodiment of the present invention, comprising: a piston, the piston comprising a valve body; a flow regulating valve, the flow regulating valve is arranged in the piston and comprises an overflow valve seat, an overflow valve body and an overflow valve plate, the overflow valve body is movably arranged in the piston, and the overflow valve plate is movably arranged between the overflow valve seat and the overflow valve body; wherein, the valve body is provided with a sealing ring platform, and an end of the overflow valve body facing away from the overflow valve seat is provided with a sealing groove, the sealing ring platform extends into the sealing groove and cooperates with the sealing groove in a dynamic seal; and a valve seat abutting ring platform is provided on the side of the overflow valve seat facing the overflow valve plate, the valve seat abutting ring platform abuts the overflow valve plate, and the inner diameter of the valve seat abutting ring platform is larger than the inner diameter of the sealing groove.

[0008] In this way, the shock absorber according to the embodiment of the present invention can more easily push open the overflow valve plate and the overflow valve body in the compression condition, so as to adjust the damping force of the shock absorber.

[0009] According to some embodiments of the present invention, the inner cross-sectional area of ​​the valve seat abutting the ring platform is S1, the inner cross-sectional area of ​​the sealing groove is S2, and S1 and S2 satisfy: 1.05×S2≤S1≤1.3×S2.

[0010] According to some embodiments of the present invention, a valve body abutment ring is provided on the side of the overflow valve body facing the overflow valve plate, the valve body abutment ring abuts against the overflow valve plate, and the inner diameter of the valve body abutment ring is smaller than the inner diameter of the valve seat abutment ring.

[0011] According to some embodiments of the present invention, the outer diameter of the valve body abutting the ring platform is smaller than the inner diameter of the valve seat abutting the ring platform.

[0012] According to some embodiments of the present invention, a valve body abutment surface is constructed on one side surface of the overflow valve plate facing the overflow valve body, and the valve body abutment surface is suitable for abutting against the valve body abutment ring, and a valve body pressure-bearing surface is formed between the valve body abutment surface and the outer periphery of the overflow valve plate.

[0013] According to some embodiments of the present invention, the overflow valve seat is provided with a first flow channel, which is connected to the compression chamber of the shock absorber; a second flow channel is formed between the overflow valve plate and the overflow valve body, and a third flow channel is formed between the overflow valve plate and the overflow valve seat, the second flow channel and the third flow channel are respectively connected to the first flow channel and are both connected to the recovery chamber of the shock absorber; wherein the second flow channel and / or the third flow channel are opened and closed by the movement of the overflow valve body.

[0014] According to some embodiments of the present invention, the overflow valve plate is configured with at least one communicating hole, and the second flow channel is connected to the first flow channel through the communicating hole.

[0015] According to some embodiments of the present invention, the piston further includes: a piston rod; a piston valve assembly, the piston valve assembly and the piston rod are connected via the valve body, and the flow regulating valve is installed in the valve body.

[0016] According to some embodiments of the present invention, along the radial direction of the shock absorber, the sealing ring platform is spaced apart from the inner wall of the valve body, the overflow valve body is dynamically sealed with the inner wall of the valve body, and the sealing groove is dynamically sealed with the outer wall of the sealing ring platform.

[0017] According to some embodiments of the present invention, the overflow valve body is movably disposed in the valve body, the outer wall of the overflow valve body, the inner wall of the valve body and the outer wall of the sealing ring platform define a first chamber, and the sealing groove and the inner wall of the sealing ring platform define a second chamber; the shock absorber also includes: a control valve, which extends into the second chamber to control the opening and closing of the first chamber and the second chamber.

[0018] According to some embodiments of the present invention, the side wall of the valve body is provided with a fourth flow channel and a fifth flow channel, the fourth flow channel is respectively connected to the first chamber and the restoration chamber, one end of the fifth flow channel is connected to the restoration chamber, and the other end is respectively connected to the second flow channel and the third flow channel; and the overflow valve body is constructed with a first flow channel of the valve body and a second flow channel of the valve body, one end of the first flow channel of the valve body is connected to the first chamber, the other end of the first flow channel of the valve body is connected to the second chamber and the control valve is matched with the other end of the first flow channel of the valve body, the end of the second flow channel of the valve body facing away from the overflow valve seat is connected to the second chamber, and the other end of the second flow channel of the valve body is connected to the first flow channel, and the fluid flow of the first flow channel of the valve body and the fluid flow of the second flow channel of the valve body are controlled by the opening and closing of the control valve.

[0019] According to some embodiments of the present invention, the valve body includes: an upper valve body, the upper valve body is connected to the piston rod, the overflow valve body is movably arranged in the upper valve body, the upper valve body is provided with the sealing ring platform, and the overflow valve body and the upper valve body define the first chamber and the second chamber; a lower valve body, the lower valve body is connected between the piston valve assembly and the upper valve body, and the overflow valve seat is arranged in the lower valve body; wherein the side wall of the upper valve body is provided with the fourth flow channel, and the side wall of the lower valve body is provided with the fifth flow channel.

[0020] According to some embodiments of the present invention, the control valve includes: a valve core assembly, which is arranged on the piston; a pilot valve, which is connected to the valve core assembly, and the valve core assembly controls the flow regulating valve through the pilot valve to adjust the fluid flow between the compression chamber and the recovery chamber.

[0021] According to a second aspect of the present invention, a vehicle is provided. The vehicle comprises the shock absorber according to the first aspect of the present invention.

[0022] According to the vehicle described in the second aspect embodiment of the present invention, by utilizing the shock absorber described in the first aspect embodiment of the present invention, the shock absorber can more easily push open the overflow valve plate and the overflow valve body in compression conditions to facilitate adjustment of the damping force of the shock absorber.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through 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: Figure 1 is a schematic structural diagram of a shock absorber according to an embodiment of the present invention; Figure 2 is a structural schematic diagram of a flow control valve according to an embodiment of the present invention, when the initial position is in an open valve state and the working condition is restored; Figure 3 is a structural schematic diagram of a compression condition when the flow control valve according to an embodiment of the present invention is in an open valve state at an initial position; Figure 4 It is a structural schematic diagram of the flow control valve according to an embodiment of the present invention, when the initial position is in a closed valve state and the working condition is restored; Figure 5 is a structural schematic diagram of a compression condition when the flow control valve according to an embodiment of the present invention is in a closed valve state at an initial position; Figure 6 is a cross-sectional view of a flow control valve according to an embodiment of the present invention; Figure 7 yes Figure 6 Detailed view of C; Figure 8 is a cross-sectional view of the flow control valve according to an embodiment of the present invention when the second flow channel is opened; Fig. 9 is a cross-sectional view of the flow control valve according to an embodiment of the present invention when the third flow channel is opened; Fig.10 is a structural schematic diagram of an upper valve body according to an embodiment of the present invention; Fig.11 is a cross-sectional view of an upper valve body according to an embodiment of the present invention; Fig.12 is a schematic structural diagram of a lower valve body according to an embodiment of the present invention; Fig.13 is a cross-sectional view of a lower valve body according to an embodiment of the present invention.

[0025] Reference numerals: 1. Shock absorber; 100, cylinder; 110, inner cylinder; 111, compression chamber; 112, recovery chamber; 120, outer cylinder; 121, liquid storage chamber; 130, bottom valve assembly; 200, piston; 210, piston rod; 220, piston valve assembly; 230, valve body; 240, upper valve body; 241, first chamber; 242, second chamber; 243, fourth flow channel; 244, sealing ring stage; 250, lower valve body; 251, fifth flow channel; 253, third chamber; 300, flow control valve; 310, overflow valve body; 311, second flow channel; 312, valve body abutting ring platform; 314, valve body first flow channel; 314a, radial section; 314b, axial section; 315, valve body second flow channel; 316, sealing sink; 320, overflow valve seat; 321, first flow channel; 322, third flow channel; 325, valve seat abutting ring platform; 330, overflow valve plate; 331, connecting hole; 335, valve body abutting surface; 336, valve body pressure-bearing surface; 337, valve seat abutting surface; 338, valve seat pressure-bearing surface; 370, overflow channel; 400, control valve; 500, valve core assembly; 600. Pilot valve. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "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, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0029] In the description of the present invention, "plurality" means two or more than two, and "several" means one or more.

[0030] A vibration absorber 1 according to an embodiment of the present invention will be described below with reference to the drawings.

[0031] like Figure 1-Figure 13 As shown, the shock absorber 1 according to the embodiment of the present invention includes a cylinder 100 , a piston 200 , a flow regulating valve 300 and a control valve 400 .

[0032] The piston 200 is movably disposed on the cylinder 100, and the piston 200 separates a compression chamber 111 and a recovery chamber 112 in the cylinder 100. The flow regulating valve 300 is disposed in the piston 200 and is respectively connected to the compression chamber 111 and the recovery chamber 112. The control valve 400 is disposed on the piston 200. The control valve 400 adjusts the fluid flow between the compression chamber 111 and the recovery chamber 112 by controlling the flow regulating valve 300.

[0033] The compression chamber 111 and the recovery chamber 112 may store fluid, such as fluid with a certain pressure and inert gas.

[0034] Among them, the shock absorber 1 also includes a bottom valve assembly 130, the cylinder 100 includes an outer cylinder 120 and an inner cylinder 110, the inner cylinder 110 extends into the outer cylinder 120, and a liquid storage chamber 121 is formed between the outer cylinder 120 and the inner cylinder 110. The piston 200 is movably arranged in the inner cylinder 110 and separates a compression chamber 111 and a recovery chamber 112 in the inner cylinder 110. The bottom valve assembly 130 is installed on the inner cylinder 110 or the outer cylinder 120, and the fluid in the compression chamber 111 flows into the liquid storage chamber 121 through the bottom valve assembly 130, or the fluid in the liquid storage chamber 121 flows into the compression chamber 111 through the bottom valve assembly 130.

[0035] According to the shock absorber 1 of the embodiment of the present invention, the piston 200 is movably arranged on the cylinder 100, and the piston 200 separates the compression chamber 111 and the recovery chamber 112 in the cylinder 100. The flow regulating valve 300 is arranged on the piston 200 and is connected to the compression chamber 111 and the recovery chamber 112 respectively.

[0036] In this way, when the shock absorber 1 is in a compression condition, the piston 200 compresses the volume of the compression chamber 111, and the volume of the recovery chamber 112 will increase accordingly. At this time, the fluid in the compression chamber 111 will flow to the recovery chamber 112 through the flow regulating valve 300, and when the shock absorber 1 is in a recovery condition, the piston 200 compresses the volume of the recovery chamber 112, and the volume of the compression chamber 111 will increase accordingly. At this time, the fluid in the recovery chamber 112 will flow to the compression chamber 111 through the flow regulating valve 300. In the above process, by repeatedly changing the moving direction of the piston 200, the fluid repeatedly flows between the compression chamber 111 and the recovery chamber 112, and the friction between the fluid and the shock absorber 1 generates heat, which can convert the kinetic energy of the piston 200 into the thermal energy of the fluid, thereby reducing the power of the piston 200.

[0037] Therefore, when the cylinder 100 and the piston 200 of the shock absorber 1 are respectively connected to two objects (such as a vehicle frame and a wheel), when one of the two objects vibrates, the vibration force transmitted to the other object can be reduced by the presence of the shock absorber 1, thereby achieving a vibration reduction effect.

[0038] In addition, the control valve 400 is disposed on the piston 200 , and the control valve 400 adjusts the fluid flow between the compression chamber 111 and the recovery chamber 112 by controlling the flow regulating valve 300 .

[0039] In this way, when the piston 200 moves, the control valve 400 can be used to adjust the fluid flow rate flowing back and forth between the compression chamber 111 and the recovery chamber 112 at the same time. When the fluid flow rate flowing through the flow regulating valve 300 is large, the damping force of the shock absorber 1 can be small, that is, the shock absorber 1 can appear "soft", and when the fluid flow rate flowing through the flow regulating valve 300 is small, the damping force of the shock absorber 1 can be large, that is, the shock absorber 1 can appear "hard", and the control valve 400 can continuously adjust the size of the fluid flow rate flowing through the flow regulating valve 300, so that the shock absorber 1 can achieve continuous adjustment of the damping force, which is beneficial to improving the ride comfort and handling stability of the vehicle.

[0040] Moreover, by controlling the flow regulating valve 300 through the control valve 400, the fluid flow structure between the compression chamber 111 and the recovery chamber 112 of the shock absorber 1 is simple, thereby simplifying the adjustment structure of the damping force of the shock absorber 1, so as to facilitate the adjustment of the damping force of the shock absorber 1, and the adjustment is simpler and more convenient.

[0041] In this way, the shock absorber 1 according to the embodiment of the present invention can continuously adjust the damping force by adjusting the fluid flow between the compression chamber 111 and the restoring chamber 112, which is beneficial to improving the riding comfort and the handling performance of the vehicle. In addition, the shock absorber 1 has a simple structure and is easy to adjust.

[0042] like Figure 1-Figure 5 As shown, the shock absorber 1 according to the embodiment of the present invention further includes a piston 200 .

[0043] The piston 200 includes a valve body 230 , and the flow regulating valve 300 is arranged in the piston 200 and includes a relief valve seat 320 , a relief valve body 310 and a relief valve plate 330 , the relief valve body 310 is movably arranged in the piston 200 , and the relief valve plate 330 is movably arranged between the relief valve seat 320 and the relief valve body 310 .

[0044] When the overflow valve body 310 and the overflow valve seat 320 are respectively in contact with the overflow valve plate 330, the flow regulating valve 300 is closed; and when at least one of the overflow valve body 310 and the overflow valve seat 320 is separated from the overflow valve plate 330, the flow regulating valve 300 is opened.

[0045] Specifically, Figure 1 , Figure 8 and Fig. 9As shown, the overflow valve seat 320 is constructed with a first flow channel 321, and the first flow channel 321 is suitable for communicating with the compression chamber 111 of the shock absorber 1. A second flow channel 311 is formed between the overflow valve plate 330 and the overflow valve body 310, and a third flow channel 322 is formed between the overflow valve plate 330 and the overflow valve seat 320. The second flow channel 311 and the third flow channel 322 are respectively communicated with the first flow channel 321 and are both communicated with the recovery chamber 112 of the shock absorber 1; wherein the second flow channel 311 and / or the third flow channel 322 are opened and closed by the movement of the overflow valve body 310.

[0046] Among them, when the second flow channel 311 is opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the second flow channel 311; when the third flow channel 322 is opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the third flow channel 322; when the second flow channel 311 and the third flow channel 322 are both opened, the fluid between the compression chamber 111 and the recovery chamber 112 can flow through the first flow channel 321 and the second flow channel 311, and can flow through the first flow channel 321 and the third flow channel 322.

[0047] By dividing the flow regulating valve 300 into the overflow valve body 310, the overflow valve plate 330 and the overflow valve seat 320, the control valve 400 can control the relative movement of the overflow valve body 310 relative to the overflow valve seat 320, so that the second flow channel 311 and the third flow channel 322 can be closed. At this time, the fluid in the recovery chamber 112 and the compression chamber 111 cannot flow through the first flow channel 321 and the second flow channel 311 or the third flow channel 322; or, the second flow channel 311 and / or the third flow channel 322 can be opened so that the fluid in the recovery chamber 112 and the compression chamber 111 can flow through the first flow channel 321 and the second flow channel 311 and / or the third flow channel 322, and by controlling the opening and closing size of the second flow channel 311 and / or the third flow channel 322, the flow rate of the fluid between the compression chamber 111 and the recovery chamber 112 can be changed to adjust the damping force of the shock absorber 1, and the pressure between the compression chamber 111 and the recovery chamber 112 can be balanced.

[0048] In addition, by adding a movable overflow valve plate 330 between the overflow valve body 310 and the overflow valve seat 320, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery state, the overflow valve body 310 and the overflow valve seat 320 can first abut on the opposite sides of the overflow valve plate 330, and the fluid can push open the overflow valve body 310, and the overflow valve body 310 and the overflow valve plate 330 move relative to each other, and the second flow channel 311 is opened. At this time, the fluid in the recovery chamber 112 can pass through the second flow channel 311 and the first flow channel 321. Flows into the compression chamber 111; when the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a compression condition, the overflow valve body 310 and the overflow valve seat 320 can first abut against the opposite sides of the overflow valve plate 330, and the fluid can push open the overflow valve body 310 and the overflow valve plate 330, that is, the overflow valve plate 330 and the overflow valve body 310 move together relative to the overflow valve seat 320, and the third flow channel 322 opens. At this time, the fluid in the compression chamber 111 can flow into the recovery chamber 112 through the third flow channel 322 and the first flow channel 321.

[0049] With such an arrangement, when the shock absorber 1 is in a compression condition or a recovery condition, the overflow valve body 310 and the overflow valve seat 320 can be more easily moved relative to each other, that is, the overflow valve plate 330 can assist in opening the overflow valve body 310 and the overflow valve seat 320 to facilitate the connection between the compression chamber 111 and the recovery chamber 112.

[0050] Among them, Figure 8 and Fig. 9 As shown, the overflow valve plate 330 is configured with at least one communicating hole 331 , and the second flow channel 311 is communicated with the first flow channel 321 through the communicating hole 331 .

[0051] In this way, when the overflow valve body 310 is separated from the overflow valve plate 330 and the overflow valve seat 320 is in contact with the overflow valve plate 330, that is, the second flow channel 311 is opened and the third flow channel 322 is closed, the second flow channel 311 can be connected with the first flow channel 321 through the connecting hole 331, and the structural setting is more reasonable, so that the fluid in the recovery chamber 112 and the compression chamber 111 can flow through the second flow channel 311, the connecting hole 331 and the first flow channel 321.

[0052] In addition, if Figure 6 As shown, the valve body 230 is provided with a sealing ring platform 244, and the end of the overflow valve body 310 facing away from the overflow valve seat 320 is provided with a sealing groove 316. The sealing ring platform 244 extends into the sealing groove 316 and cooperates with the sealing groove 316 in a dynamic seal. The side of the overflow valve seat 320 facing the overflow valve plate 330 is provided with a valve seat abutting ring platform 325, and the valve seat abutting ring platform 325 abuts against the overflow valve plate 330, and the inner diameter of the valve seat abutting ring platform 325 is larger than the inner diameter of the sealing groove 316.

[0053] The valve seat abutment ring 325 in the present invention is the second abutment ring in the priority application.

[0054] Specifically, Figure 8 As shown, the inner diameter of the valve seat abutting the ring platform 325 can be A, that is, the pressure bearing area S1 formed by the relief valve seat 320 abutting against the inner diameter of the relief valve plate 330 is: π(A / 2) 2 The inner diameter of the sealing groove 316 is B, that is, the inner diameter of the dynamic sealing surface of the relief valve body 310 and the valve body 230 forms a pressure bearing area S2 of: π(B / 2) 2 .

[0055] It should be noted that when the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a compression condition, if the third flow channel 322 is to be opened, the following conditions must be met: the pressure on the side of the overflow valve plate 330 facing the overflow valve seat 320 (i.e., pressure × the force area S1 on the side of the overflow valve plate 330 facing the overflow valve seat 320) > the electromagnetic force on the overflow valve body 310 + the pressure on the side of the overflow valve body 310 facing away from the overflow valve seat 320 (i.e., pressure × the force area S2 on the side of the overflow valve body 310 facing away from the overflow valve seat 320). At this time, the fluid can more easily push open the overflow valve plate 330 and the overflow valve body 310, so that the fluid can flow out from between the overflow valve seat 320 and the overflow valve plate 330, and the damping is reduced.

[0056] From the above, it can be seen that when the ratio of the force area S2 on the side of the overflow valve body 310 facing away from the overflow valve seat 320 to the force area S1 on the side of the overflow valve plate 330 facing the overflow valve seat 320 is reduced, the compression damping force adjustment bandwidth can be greatly improved. The compression damping force plays a key role in the driving comfort and controllability of the vehicle. In order to improve people's demand for driving experience in different scenarios, the compression damping adjustment bandwidth needs to be increased as much as possible.

[0057] In this way, the shock absorber 1 according to the embodiment of the present invention can more easily push open the relief valve plate 330 and the relief valve body 310 in the compression condition, so as to adjust the damping force of the shock absorber 1.

[0058] In some specific embodiments of the present invention, the inner cross-sectional area of ​​the valve seat abutting ring platform 325 is S1, the inner cross-sectional area of ​​the sealing groove 316 is S2, and S1 and S2 satisfy: 1.05×S2≤S1≤1.3×S2.

[0059] The inner cross-sectional area of ​​the valve seat abutting ring platform 325 refers to the cross-sectional area of ​​the inner peripheral surface of the valve seat abutting ring platform 325 , and the inner cross-sectional area of ​​the sealing groove 316 refers to the cross-sectional area of ​​the inner peripheral surface of the sealing groove 316 .

[0060] That is, when the following relationship exists: Area ratio relationship π×(A / 2) 2=(1.05~1.3)×π×B / 2) 2 That is, 1.05 times the force area S2 ≤ force area S1 ≤ 1.3 times the force area S2. The overflow valve plate 330 is easy to push open and release pressure when the fluid flows. At the same time, the compression damping adjustment bandwidth is large, the compression damping force is easy to adjust, and the upper limit of the vehicle's driving comfort and controllability is high.

[0061] In some specific embodiments of the present invention, Figure 6 , Figure 8 and Fig. 9 As shown, a valve body abutting ring 312 is provided on the side of the overflow valve body 310 facing the overflow valve plate 330 , the valve body abutting ring 312 abuts against the overflow valve plate 330 , and the inner diameter of the valve body abutting ring 312 is smaller than the inner diameter of the valve seat abutting ring 325 .

[0062] The valve body abutment ring 312 in the present invention is the first abutment ring in the priority application.

[0063] In this way, the contact area between the fluid in the overflow valve body 310 and the overflow valve plate 330 can be smaller than the contact area between the fluid in the overflow valve seat 320 and the overflow valve plate 330. When the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a compression condition, the fluid flows from the compression chamber 111 to the recovery chamber 112, and the fluid in the first flow channel 321 can more easily push the overflow valve plate 330 and the overflow valve body 310, so that the third flow channel 322 formed between the overflow valve plate 330 and the overflow valve seat 320 can be opened, thereby allowing the fluid in the compression chamber 111 to flow from the first flow channel 321 and the third flow channel 322 into the recovery chamber 112.

[0064] In some specific embodiments of the present invention, Figure 6 , Figure 8 and Fig. 9 As shown, the outer diameter of the valve body abutting ring 312 is smaller than the inner diameter of the valve seat abutting ring 325 .

[0065] In this way, the valve body abutting ring platform 312 and the valve seat abutting ring platform 325 can be arranged alternately along the radial direction of the overflow valve plate 330, and the side of the overflow valve plate 330 facing the overflow valve body 310 can exceed the valve body abutting ring platform 312 in its radial direction outward, that is, the outer peripheral edge of the overflow valve plate 330 can exceed the valve body abutting ring platform 312 in its radial direction outward. When the flow control valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery condition, the fluid can flow between the overflow valve plate 330 and the outer peripheral edge of the overflow valve body 310, so that the overflow valve plate 330 and the overflow valve body 310 can be pushed apart by the fluid, so that the second flow channel 311 can be opened, so that the fluid in the recovery chamber 112 can flow into the compression chamber 111 through the second flow channel 311, the connecting hole 331 and the first flow channel 321.

[0066] In some specific embodiments of the present invention, Figure 7 As shown, a side surface of the overflow valve plate 330 facing the overflow valve body 310 is constructed with a valve body abutment surface 335, and the valve body abutment surface 335 is arranged adjacent to the inner periphery of the overflow valve plate 330. The valve body abutment surface 335 is suitable for abutting against the valve body abutment ring platform 312, and a valve body pressure-bearing surface 336 is formed between the valve body abutment surface 335 and the outer periphery of the overflow valve plate 330.

[0067] In the orthographic projection along the axial direction of the cylinder 100 , the inner peripheral edge of the valve body abutting surface 335 is located on the inner side of the valve seat abutting ring 325 .

[0068] Therefore, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery condition, the fluid can flow between the valve body pressure-bearing surface 336 and the part of the valve body abutting the outside of the ring platform 312, so as to push open the overflow valve plate 330 and the overflow valve body 310 to open the second flow channel 311.

[0069] In addition, a valve seat abutting surface 337 and a valve seat pressure-bearing surface 338 are configured on the side surface of the overflow valve disc 330 facing the overflow valve seat 320. The valve seat abutting surface 337 is arranged adjacent to the outer periphery of the overflow valve disc 330, and the valve seat pressure-bearing surface 338 is arranged adjacent to the inner periphery of the overflow valve disc 330. The valve seat abutting surface 337 is suitable for abutting against the valve seat abutting ring platform 325. In this way, when the flow control valve 300 is in a closed state at the initial position and the shock absorber 1 is in a compression condition, the fluid can push the overflow valve disc 330 through the valve seat pressure-bearing surface 338, and then can push the overflow valve disc 330 and the overflow valve body 310 relative to the overflow valve seat 320 to open the third flow channel 322.

[0070] In some specific embodiments of the present invention, Figure 1 As shown, the piston 200 further includes a piston rod 210 and a piston valve assembly 220 .

[0071] The piston valve assembly 220 and the piston rod 210 are connected via the valve body 230 , the flow regulating valve 300 is installed in the valve body 230 , and the control valve 400 extends into the valve body 230 and cooperates with the flow regulating valve 300 .

[0072] For example, the piston valve assembly 220 can be sleeved on the outer circumference of the valve body 230 and threadedly connected to the outer circumference of the valve body 230 , and the piston rod 210 can be sleeved on the outer circumference of the valve body 230 and threadedly connected to the outer circumference of the valve body 230 .

[0073] By dividing the piston 200 into a piston rod 210 and a piston valve assembly 220, the installation of the control valve 400 and the flow regulating valve 300 is more convenient, and the piston valve assembly 220 and the piston rod 210 are connected by the valve body 230, which is convenient for disassembly and assembly.

[0074] In some specific embodiments of the present invention, Figure 6 As shown, along the radial direction of the cylinder 100 , the sealing ring platform 244 is spaced apart from the inner wall of the valve body 230 , the overflow valve body 310 is dynamically sealed with the inner wall of the valve body 230 , and the sealing groove 316 is dynamically sealed with the outer wall of the sealing ring platform 244 .

[0075] Specifically, Figure 1 and Figure 6 As shown, the overflow valve body 310 is movably arranged in the valve body 230, the outer wall of the overflow valve body 310, the inner wall of the valve body 230 and the outer wall of the sealing ring platform 244 define a first chamber 241, and the sealing groove 316 and the inner wall of the sealing ring platform 244 define a second chamber 242, and the shock absorber 1 also includes a control valve 400, which extends into the second chamber 242 to control the on-off of the first chamber 241 and the second chamber 242.

[0076] In addition, if Figure 1 and Figure 6 As shown, the side wall of the valve body 230 is provided with a fourth flow channel 243 and a fifth flow channel 251, the fourth flow channel 243 is respectively connected to the first chamber 241 and the recovery chamber 112, one end of the fifth flow channel 251 is connected to the recovery chamber 112, and the other end is respectively connected to the second flow channel 311 and the third flow channel 322.

[0077] In addition, the overflow valve body 310 is constructed with a first valve body flow channel 314 and a second valve body flow channel 315, one end of the first valve body flow channel 314 is connected to the first chamber 241, the other end of the first valve body flow channel 314 is connected to the second chamber 242, and the control valve 400 is matched with the other end of the first valve body flow channel 314, one end of the second valve body flow channel 315 facing away from the overflow valve seat 320 is connected to the second chamber 242, and the other end of the second valve body flow channel 315 is connected to the first flow channel 321, and the fluid flow of the first valve body flow channel 314 and the fluid flow of the second valve body flow channel 315 are controlled by the opening and closing of the control valve 400.

[0078] The first flow channel 314 of the valve body in the present invention is the sixth flow channel in the priority application, and the second flow channel 315 of the valve body in the present invention is the seventh flow channel in the priority application.

[0079] With such arrangement, there will be no positional interference between the first chamber 241 and the second chamber 242, and when the control valve 400 controls the first flow channel 314 and the second flow channel 315 of the valve body to be disconnected, the second chamber 242 can be disconnected from the first chamber 241, at which time the fluid in the recovery chamber 112 and the compression chamber 111 will not flow through the first flow channel 314 and the second flow channel 315 of the valve body; and when the fluid pressure in the first chamber 241 is relatively large, the fluid in the first chamber 241 will push open the control valve 400 through the first flow channel 314 of the valve body, and the first chamber 241 will be connected with the second chamber 242, at which time the fluid in the recovery chamber 112 and the compression chamber 111 can flow through the first flow channel 314 and the second flow channel 315 of the valve body.

[0080] For example, Figure 6 As shown, the first flow channel 314 of the valve body may include a radial section 314a and an axial section 314b, the radial section 314a extends radially along the overflow valve body 310, and one end of the radial section 314a passes through the outer circumferential surface of the overflow valve body 310, the axial section 314b extends axially along the overflow valve body 310, one end of the axial section 314b is connected to the other end of the radial section 314a, and the other end of the axial section 314b passes through the side of the overflow valve body 310 facing the pilot valve 600.

[0081] In this way, one end of the radial section 314a can be connected to the first chamber 241, and the other end of the axial section 314b and the end of the second flow channel 315 of the valve body facing the valve core assembly 500 can be connected to the second chamber 242. When the pilot valve 600 is sealed with the other end of the axial section 314b, the first flow channel 314 of the valve body and the second flow channel 315 of the valve body are disconnected. At this time, the recovery chamber 112 cannot be connected to the compression chamber 111 through the first flow channel 314 of the valve body and the second flow channel 315 of the valve body; and when the control valve 400 is separated from the other end of the axial section 314b, the first flow channel 314 of the valve body and the second flow channel 315 of the valve body are connected. At this time, the recovery chamber 112 can be connected to the compression chamber 111 through the first flow channel 314 of the valve body and the second flow channel 315 of the valve body.

[0082] Therefore, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery condition, when the pressure in the first chamber 241 is relatively high, the fluid in the first chamber 241 will push open the control valve 400 through the first flow channel 314 of the valve body. At this time, the fluid in the first chamber 241 can flow into the second chamber 242 through the first flow channel 314 of the valve body, and then flow to the compression chamber 111 through the second flow channel 315 of the valve body. At this time, the flow rate of the fluid is relatively large, and the shock absorber 1 appears to be "soft".

[0083] In some embodiments of the present invention, Figure 6As shown, a third chamber 253 can be formed between the fifth flow channel 251 and the overflow valve body 310 and the overflow valve seat 320, and in the axial direction of the cylinder 100, the third chamber 253 and the first chamber 241 are arranged on both sides of the overflow valve body 310. Specifically, the first chamber 241 is located on the side of the overflow valve body 310 facing away from the overflow valve seat 320, and the third chamber 253 is located on the side of the overflow valve body 310 facing the overflow valve seat 320.

[0084] It can be understood that when the flow regulating valve 300 is in a closed state at the initial position and the shock absorber 1 is in a recovery condition, the fluid flow from the fifth flow channel 251 into the third chamber 253 and from the third chamber 253 to the compression chamber 111 is small. At this time, the pressure in the third chamber 253 will rise sharply, while the fluid flow from the fourth flow channel 243 into the first chamber 241 and from the first flow channel 314 of the valve body, the second chamber 242 and the second flow channel 315 of the valve body into the compression chamber 111 is large, that is, the pressure in the first chamber 241 will be lower than the pressure in the third chamber 253, so that the fluid in the third chamber 253 can be used to push the overflow valve body 310 to move away from the overflow valve seat 320 to open the second flow channel 311.

[0085] In this way, the fluid in the recovery chamber 112 can flow into the first chamber 241 through the fourth flow channel 243, and, when the second flow channel 311 and / or the third flow channel 322 are opened, the fluid in the compression chamber 111 can flow to the second flow channel 311 and / or the third flow channel 322 through the first flow channel 321, so as to flow to the fifth flow channel 251 through the second flow channel 311 and / or the third flow channel 322, and flow into the recovery chamber 112.

[0086] In some specific embodiments of the present invention, Figure 1 and Figure 6 As shown, the valve body 230 includes an upper valve body 240 and a lower valve body 250 .

[0087] Specifically, the upper valve body 240 is connected to the piston rod 210, the overflow valve body 310 is movably disposed in the upper valve body 240, the upper valve body 240 is provided with a sealing ring 244, and the overflow valve body 310 and the upper valve body 240 define a first chamber 241 and a second chamber 242, the lower valve body 250 is connected between the piston valve assembly 220 and the upper valve body 240, and the overflow valve seat 320 is disposed in the lower valve body 250.

[0088] By setting the valve body 230 as an upper valve body 240 and a lower valve body 250, the structure of the valve body 230 can be simplified, the processing and manufacturing of the valve body 230 can be facilitated, and the assembly of the piston rod 210, the upper valve body 240, the lower valve body 250, the piston valve assembly 220 and the flow regulating valve 300 can be simpler and more convenient.

[0089] The side wall of the upper valve body 240 is provided with a fourth flow channel 243, and the side wall of the lower valve body 250 is provided with a fifth flow channel 251. In this way, the fluid in the recovery chamber 112 can flow into the first chamber 241 through the fourth flow channel 243, and when the second flow channel 311 and / or the third flow channel 322 are opened, the fluid in the compression chamber 111 can flow to the second flow channel 311 and / or the third flow channel 322 through the first flow channel 321, and flow to the fifth flow channel 251 through the second flow channel 311 and / or the third flow channel 322, and flow into the recovery chamber 112.

[0090] In some specific embodiments of the present invention, Figure 1 As shown, the control valve 400 includes a valve core assembly 500 and a pilot valve 600 .

[0091] The valve core assembly 500 is disposed on the piston 200 , the pilot valve 600 is connected to the valve core assembly 500 , and the valve core assembly 500 controls the flow regulating valve 300 through the pilot valve 600 to adjust the fluid flow between the compression chamber 111 and the recovery chamber 112 .

[0092] In this way, when the valve core assembly 500 moves, the valve core assembly 500 can drive the pilot valve 600 to move, or, when the fluid pushes the pilot valve 600 to move in a direction away from the flow regulating valve 300, the pilot valve 600 can also drive the valve core assembly 500 to move, and then the fluid flow of the flow regulating valve 300 can be adjusted to adjust the fluid flow between the compression chamber 111 and the recovery chamber 112, so that when the valve core assembly 500 moves the same distance, the heat generated by the fluid due to friction is different, so as to change the vibration reduction effect of the shock absorber 1.

[0093] The following example illustrates the fluid flow path of the shock absorber 1 in the recovery state and the compression state when the flow control valve 300 is in the open state at the initial position: In the present invention, the flow control valve 300 is in an open valve state at the initial position, which means that the flow control valve 300 is in an open initial state when there is no external pressure squeezing the flow control valve 300 and no fluid flows in the flow control valve 300. Also, the flow control valve 300 is in a closed valve state at the initial position, which means that the flow control valve 300 is squeezed by an external force, and the overflow valve seat 320 and the overflow valve body 310 of the flow control valve 300 are in abutment and closed initial state.

[0094] For example, in some embodiments, when the valve core assembly 500 is energized, it squeezes the flow regulating valve 300. At this time, the flow regulating valve 300 is in an open valve state at the initial position, which means that the valve core assembly 500 is not energized and there is no fluid flowing in the flow regulating valve 300, and the flow regulating valve 300 is in an open initial state. At this time, the flow regulating valve 300 is in a balanced state; and, the flow regulating valve 300 is in a closed valve state at the initial position, which means that the valve core assembly 500 is energized and the overflow valve seat 320 and the overflow valve body 310 of the flow regulating valve 300 are in abutment and closed initial state.

[0095] Alternatively, in other embodiments, the flow regulating valve 300 will be squeezed when the valve core assembly 500 is not energized. At this time, the flow regulating valve 300 is in an open valve state at the initial position, which means that the valve core assembly 500 is energized and there is no fluid flowing in the flow regulating valve 300, and the flow regulating valve 300 is in an open initial state. At this time, the flow regulating valve 300 is in a balanced state; and, the flow regulating valve 300 is in a closed valve state at the initial position, which means that the valve core assembly 500 is not energized and the overflow valve seat 320 and the overflow valve body 310 of the flow regulating valve 300 are in an abutment and closed initial state.

[0096] 1. If Figure 2 As shown, when the flow regulating valve 300 is in an open valve state at the initial position and the shock absorber 1 is in a recovery condition, the piston rod 210 vibrates upward and the pressure in the recovery chamber 112 increases. At this time, the elastic force of the valve body elastic member supports the overflow valve body 310, and the pressure in the second chamber increases to make the overflow valve plate 330 fit the overflow valve seat 320. The fluid in the recovery chamber 112 can flow to the compression chamber 111 through the second flow channel 311, the connecting hole 331 and the first flow channel 321. The flow rate of the fluid is large and the fluid damping is small. The shock absorber 1 appears to be "soft". At the same time, the fluid in the liquid storage chamber 121 can also flow into the compression chamber 111.

[0097] 2. If Figure 3 As shown, when the flow regulating valve 300 is in an open valve state at the initial position and the shock absorber 1 is in a compression condition, the piston rod 210 vibrates downward, the pressure in the compression chamber 111 increases, and the pressure in the first flow channel 321 increases, so that the overflow valve body 310 and the overflow valve plate 330 move away from the overflow valve seat 320, and the overflow valve plate 330 fits the overflow valve body 310, and the fluid in the compression chamber 111 can flow into the recovery chamber 112 from the third flow channel 322 and the first flow channel 321, and the fluid flow rate is large, the fluid damping is small, and the shock absorber 1 appears to be "soft", and at the same time, the fluid in the compression chamber 111 can also flow into the liquid storage chamber 121.

[0098] The following example illustrates the fluid flow path of the shock absorber 1 in the recovery state and the compression state when the flow control valve 300 is in the closed state at the initial position: 1. If Figure 4As shown, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the recovery state, the valve body 230 is pushed by the magnetic force to push the pilot valve 600 and the overflow valve body 310, the overflow valve plate 330 abuts against the overflow valve seat 320, the second flow channel 311 and the third flow channel 322 are closed, the piston rod 210 vibrates upward, the pressure of the recovery chamber 112 increases, and the fluid flows from the recovery chamber 112 and the liquid storage cylinder into the compression chamber 111; In the first stage, the overflow valve body 310 abuts against the overflow valve plate 330, and the overflow valve plate 330 abuts against the overflow valve seat 320. At this time, the second flow channel 311 and the third flow channel 322 are closed, and the fluid in the recovery chamber 112 flows from the overflow channel 370 to the compression chamber 111. The fluid flow is small, the damping is large, and the shock absorber 1 behaves as "hard"; In the second stage, the fluid in the recovery chamber 112 flows into the first chamber 241 through the fourth flow channel 243, and the pressure in the first chamber 241 increases. The fluid overcomes the electromagnetic force to push the pilot valve 600 and flows into the second chamber 242, and then flows into the compression chamber 111 through the second flow channel 315 and the first flow channel 321 of the valve body, and the damping is reduced. In the third stage, a large amount of fluid is accumulated between the overflow valve plate 330 and the overflow valve body 310. When the pressure is greater than the electromagnetic force, the fluid pushes the overflow valve body 310 open, and the fluid flows out from between the overflow valve body 310 and the overflow valve plate 330, that is, the fluid in the recovery chamber 112 flows into the compression chamber 111 through the second flow channel 311 and the first flow channel 321, and the damping is further reduced.

[0099] 2. If Figure 5 As shown, when the flow regulating valve 300 is in the closed state at the initial position and the shock absorber 1 is in the compression condition, the valve body 230 is pushed by the magnetic force to push the pilot valve 600 and the overflow valve body 310, the overflow valve plate 330 abuts against the overflow valve seat 320, the second flow channel 311 and the third flow channel 322 are closed, the piston rod 210 vibrates downward, the pressure of the compression chamber 111 increases, and the fluid flows from the compression chamber 111 into the recovery chamber 112 and the liquid storage chamber 121; In the first stage, the overflow valve body 310 abuts against the overflow valve plate 330, and the overflow valve plate 330 abuts against the overflow valve seat 320. At this time, the second flow channel 311 and the third flow channel 322 are closed, and the fluid in the compression chamber 111 flows from the overflow channel 370 to the recovery chamber 112. The fluid flow is small, the damping is large, and the shock absorber 1 behaves as "hard". In the second stage, a large amount of fluid is accumulated in the first flow channel 321. When the pressure is greater than the electromagnetic force, the flow can push open the overflow valve plate 330 and the overflow valve body 310, and the fluid flows out from between the overflow valve seat 320 and the overflow valve plate 330, that is, the flow in the compression chamber 111 flows into the recovery chamber 112 through the first flow channel 321 and the third flow channel 322, and the damping is reduced.

[0100] A vehicle according to an embodiment of the present invention will be described below with reference to the accompanying drawings. The vehicle includes the shock absorber 1 according to the above-described embodiment of the present invention.

[0101] According to the vehicle of the embodiment of the present invention, by utilizing the shock absorber 1 according to the above embodiment of the present invention, the shock absorber 1 is more likely to push open the overflow valve plate 330 and the overflow valve body 310 in a compression condition, so as to adjust the damping force of the shock absorber 1.

[0102] The other structures and operations of the shock absorber and the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0103] In the description of this specification, the description with reference to the terms "specific embodiment", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0104] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 shock absorber (1), characterized in that: include: A piston (200), wherein the piston (200) comprises a valve body (230); A flow regulating valve (300), the flow regulating valve (300) being arranged in the piston (200) and comprising a relief valve seat (320), a relief valve body (310) and a relief valve plate (330), the relief valve body (310) being movably arranged in the piston (200), and the relief valve plate (330) being movably arranged between the relief valve seat (320) and the relief valve body (310); The valve body (230) is provided with a sealing ring platform (244), an end of the overflow valve body (310) facing away from the overflow valve seat (320) is provided with a sealing recessed groove (316), and the sealing ring platform (244) extends into the sealing recessed groove (316) and cooperates with the sealing recessed groove (316) in a dynamic seal; and A valve seat abutting ring platform (325) is provided on the side of the overflow valve seat (320) facing the overflow valve plate (330), the valve seat abutting ring platform (325) abuts against the overflow valve plate (330), and the inner diameter of the valve seat abutting ring platform (325) is larger than the inner diameter of the sealing groove (316).

2. The vibration absorber (1) according to claim 1, characterized in that The inner cross-sectional area of ​​the valve seat abutting ring platform (325) is S1, the inner cross-sectional area of ​​the sealing recess (316) is S2, and S1 and S2 satisfy: 1.05×S2≤S1≤1.3×S2.

3. The vibration absorber (1) according to claim 1, characterized in that A valve body abutting ring platform (312) is provided on one side of the overflow valve body (310) facing the overflow valve plate (330), the valve body abutting ring platform (312) abuts against the overflow valve plate (330), and the inner diameter of the valve body abutting ring platform (312) is smaller than the inner diameter of the valve seat abutting ring platform (325).

4. The vibration absorber (1) according to claim 3, characterized in that The outer diameter of the valve body abutting ring platform (312) is smaller than the inner diameter of the valve seat abutting ring platform (325).

5. The vibration absorber (1) according to claim 4, characterized in that A valve body abutting surface (335) is formed on a surface of the overflow valve plate (330) facing the overflow valve body (310), wherein the valve body abutting surface (335) is suitable for abutting against the valve body abutting ring platform (312), and a valve body pressure-bearing surface (336) is formed between the valve body abutting surface (335) and the outer peripheral edge of the overflow valve plate (330).

6. The vibration absorber (1) according to claim 1, characterized in that The overflow valve seat (320) is provided with a first flow channel (321), and the first flow channel (321) is connected to the compression chamber (111) of the shock absorber (1); A second flow channel (311) is formed between the overflow valve plate (330) and the overflow valve body (310), and a third flow channel (322) is formed between the overflow valve plate (330) and the overflow valve seat (320), the second flow channel (311) and the third flow channel (322) being respectively connected to the first flow channel (321) and are both connected to the recovery chamber (112) of the shock absorber (1); The second flow channel (311) and / or the third flow channel (322) are opened and closed by the movement of the overflow valve body (310).

7. The vibration absorber (1) according to claim 6, characterized in that The overflow valve plate (330) is configured with at least one communicating hole (331), and the second flow channel (311) is connected to the first flow channel (321) through the communicating hole (331).

8. The vibration absorber (1) according to claim 6, characterized in that The piston (200) further comprises: Piston rod (210); A piston valve assembly (220), wherein the piston valve assembly (220) and the piston rod (210) are connected via the valve body (230), and the flow regulating valve (300) is installed in the valve body (230).

9. The vibration absorber (1) according to claim 8, characterized in that Along the radial direction of the shock absorber (1), the sealing ring platform (244) and the inner wall of the valve body (230) are spaced apart, the overflow valve body (310) is dynamically sealed with the inner wall of the valve body (230), and the sealing recess (316) is dynamically sealed with the outer wall of the sealing ring platform (244).

10. The vibration absorber (1) according to claim 8, characterized in that The overflow valve body (310) is movably disposed in the valve body (230); the outer wall of the overflow valve body (310), the inner wall of the valve body (230) and the outer wall of the sealing ring platform (244) define a first chamber (241); and the sealing groove (316) and the inner wall of the sealing ring platform (244) define a second chamber (242); The shock absorber (1) further comprises: A control valve (400), the control valve (400) extending into the second chamber (242) to control the opening and closing of the first chamber (241) and the second chamber (242).

11. The vibration absorber (1) according to claim 10, characterized in that The side wall of the valve body (230) is provided with a fourth flow channel (243) and a fifth flow channel (251), the fourth flow channel (243) being in communication with the first chamber (241) and the recovery chamber (112) respectively, one end of the fifth flow channel (251) being in communication with the recovery chamber (112), and the other end being in communication with the second flow channel (311) and the third flow channel (322) respectively; and, The overflow valve body (310) is constructed with a first flow channel (314) and a second flow channel (315) of the valve body. One end of the first flow channel (314) of the valve body is communicated with the first chamber (241), and the other end of the first flow channel (314) of the valve body is communicated with the second chamber (242). The control valve (400) is matched with the other end of the first flow channel (314) of the valve body. One end of the second flow channel (315) of the valve body facing away from the overflow valve seat (320) is communicated with the second chamber (242), and the other end of the second flow channel (315) of the valve body is communicated with the first flow channel (321). The fluid flow of the first flow channel (314) of the valve body and the fluid flow of the second flow channel (315) of the valve body are controlled by the opening and closing of the control valve (400).

12. The vibration absorber (1) according to claim 11, characterized in that The valve body (230) comprises: an upper valve body (240), the upper valve body (240) being connected to the piston rod (210), the overflow valve body (310) being movably disposed in the upper valve body (240), the upper valve body (240) being provided with the sealing ring platform (244), and the overflow valve body (310) and the upper valve body (240) defining the first chamber (241) and the second chamber (242); a lower valve body (250), the lower valve body (250) being connected between the piston valve assembly (220) and the upper valve body (240), and the overflow valve seat (320) being arranged in the lower valve body (250); Wherein, the side wall of the upper valve body (240) is provided with the fourth flow channel (243), and the side wall of the lower valve body (250) is provided with the fifth flow channel (251).

13. The vibration absorber (1) according to claim 10, characterized in that The control valve (400) comprises: A valve core assembly (500), wherein the valve core assembly (500) is arranged on the piston (200); A pilot valve (600) is connected to the valve core assembly (500), and the valve core assembly (500) controls the flow regulating valve (300) through the pilot valve (600) to adjust the fluid flow between the compression chamber (111) and the recovery chamber (112).

14. A vehicle, characterized in that: Comprising a vibration absorber (1) according to any one of claims 1 to 13.

Images