Shock absorber, suspension system and vehicle

Abstract

The embodiment of the present application provides a shock absorber, a suspension system and a vehicle, wherein the shock absorber comprises: an inner shell, an outer shell and a control valve; wherein the inner shell is provided with a working chamber, the outer shell is sleeved outside the inner shell and enclosed with the inner shell to form an oil storage chamber, the control valve is connected between the working chamber and the oil storage chamber, and the control valve is used to control the flow of oil between the working chamber and the oil storage chamber. The shock absorber in the embodiment of the present application can provide different damping curves, realize multi-level adjustment of the shock absorber damping, and thus meet different damping requirements under different road conditions.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a shock absorber, a suspension system and a vehicle. Background Art

[0002] The vehicle suspension system is a key factor in determining its ride smoothness and handling stability. A good suspension system must be able to effectively attenuate and filter vibration excitations from different road conditions, while also taking into account the function of improving the vehicle's operational stability.

[0003] In the related art, the damping curve of the shock absorber in the suspension system is a comprehensive damping selected after adjustment according to different usage scenarios. The damping curve is unique, resulting in a relatively fixed damping characteristic of the shock absorber, which cannot meet the different damping curve requirements of the shock absorber under different road conditions. Utility Model Content

[0004] The present application aims to provide a shock absorber, a suspension system and a vehicle to solve the problem that the existing shock absorber cannot meet the requirements of different damping curves under different road conditions.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a shock absorber, comprising: an inner shell, an outer shell and a control valve; wherein:

[0007] The inner shell is provided with a working chamber, the outer shell is sleeved outside the inner shell and enclosed with the inner shell to form an oil storage chamber, the control valve is connected between the working chamber and the oil storage chamber, and the control valve is used to control the flow of oil between the working chamber and the oil storage chamber.

[0008] Optionally, an adjusting channel is arranged between the inner shell and the outer shell, the control valve comprises a first valve port and a second valve port which are connected to each other, the adjusting channel comprises a first end and a second end, the first end is connected to the working chamber, the second end is connected to the first valve port, and the second valve port is connected to the oil storage chamber.

[0009] Optionally, the inner shell is provided with an oil outlet, the cross-section of the first end of the regulating channel is adapted to the shape of the oil outlet, and the regulating channel is connected with the working chamber through the oil outlet.

[0010] Optionally, a plurality of the regulating channels are arranged between the inner shell and the outer shell, and the plurality of regulating channels are evenly spaced along the circumference of the inner shell. The shock absorber includes a plurality of control valves, wherein one control valve is arranged corresponding to one regulating channel.

[0011] Optionally, the radial cross-sectional areas of the plurality of adjustment channels are different.

[0012] Optionally, the first valve ports of the plurality of control valves have different calibers.

[0013] Optionally, the shock absorber further includes a restoring valve and a compression valve; wherein,

[0014] The restoring valve is movably connected in the inner shell and divides the working chamber into a first working chamber and a second working chamber, and the restoring valve is used to control the flow of oil between the first working chamber and the second working chamber;

[0015] The compression valve is connected to the inner shell and is spaced apart from the recovery valve. The compression valve separates the second working chamber from the oil storage chamber. The compression valve is used to control the flow of oil between the second working chamber and the oil storage chamber.

[0016] Optionally, the inner shell is provided with a first opening and a second opening at both ends along the first direction, respectively, and the compression valve is connected to the second opening; the outer shell is provided with a third opening at one end close to the first opening; the shock absorber also includes an end cover, which is connected to the inner shell and the outer shell and blocks the first opening and the third opening at the same time.

[0017] In a second aspect, the present application also discloses a suspension system, comprising the shock absorber as described above.

[0018] In a third aspect, the present application further discloses a vehicle, comprising the shock absorber as described above, or the suspension system as described above.

[0019] In the embodiment of the present application, a control valve is provided between the working chamber and the oil storage chamber of the shock absorber, and the control valve is provided between the working chamber and the oil storage chamber, so that the control valve can control the flow of oil between the working chamber and the oil storage chamber. When the control valve is closed, the oil between the working chamber and the oil storage chamber in the shock absorber does not flow through the control valve; and when the control valve is opened, the control valve also participates in the damping adjustment of the shock absorber, and a part of the oil in the working chamber can flow into the oil storage chamber through the control valve, thereby providing another damping curve for the shock absorber. The shock absorber in the embodiment of the present application can provide different damping curves, realize multi-level adjustment of the shock absorber damping, thereby realizing differentiated damping effects under different road conditions, and meeting different damping requirements under different road conditions.

[0020] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the structure of the shock absorber described in the embodiment of the present application.

[0023] Figure numerals: 10 - inner shell, 101 - working chamber, 11 - first working chamber, 12 - second working chamber, 13 - oil outlet, 20 - outer shell, 21 - oil storage chamber, 22 - regulating channel, 30 - recovery valve, 31 - piston rod, 40 - compression valve, 50 - control valve, 51 - first valve port, 52 - second valve port, 60 - end cover. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0025] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0026] In the description of the present application, 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", "clockwise", "counterclockwise", "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 application and simplifying the description, and do not indicate or imply 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 a limitation on the present application.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] The embodiment of the present application provides a shock absorber, which can be used in the suspension system of a vehicle, and can also be used in the shock absorption system of electric vehicles and bicycles, or in industries such as aerospace and construction, and the present application does not make specific limitations on this. According to the shock absorber provided by the embodiment of the present application, different damping curves can be provided to achieve multi-level adjustment of the shock absorber damping. When the shock absorber is applied to the suspension system of a vehicle, differentiated damping effects can be achieved under different road conditions to meet different damping requirements under different road conditions.

[0029] The shock absorber provided in the embodiment of the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] Reference Figure 1 , shows a schematic diagram of the structure of the shock absorber provided in the embodiment of the present application, such as Figure 1 As shown, the shock absorber may specifically include: an inner shell 10 , an outer shell 20 , a restoring valve 30 , a compression valve 40 and a control valve 50 .

[0031] Specifically, the inner shell 10 has a working chamber 101, and the restoring valve 30 is arranged in the working chamber 101 and is arranged with a gap with the inner wall of the inner shell 10. The restoring valve 30 is movably connected in the inner shell 10 and divides the working chamber 101 into a first working chamber 11 and a second working chamber 12. The restoring valve 30 is located in the first working chamber 11 and is fixedly connected to a piston rod 31 on one side thereof. Pushing the piston rod 31 along a first direction can change the position of the restoring valve 30 in the working chamber 101, thereby adjusting the volume of the first working chamber 11 and the second working chamber 12. Since the first working chamber 11 and the second working chamber 12 are both filled with oil, the change in the volume of the first working chamber 11 and the second working chamber 12 will affect the oil pressure in the chambers. Changing the position of the restoring valve 30 can control the circulation of oil between the first working chamber 11 and the second working chamber 12.

[0032] The outer shell 20 is sleeved on the outer shell 10 and is spaced apart from the inner shell 10 to enclose the inner shell 10 to form a closed oil storage chamber 21. The compression valve 40 is connected to the inner shell 10 and is spaced apart from the recovery valve 30. The compression valve 40 separates the second working chamber 12 and the oil storage chamber 21. The oil storage chamber 21 is also filled with oil, and the oil can flow between the second working chamber 12 and the oil storage chamber 21 through the compression valve 40.

[0033] Furthermore, the first working chamber 11 is also connected to the oil storage chamber 21, and the control valve 50 is connected between the first working chamber 11 and the oil storage chamber 21. The opening state of the control valve 50 can control the flow of oil between the first working chamber 11 and the oil storage chamber 21.

[0034] It should be noted that the first working chamber 11 is the upper part of the shock absorber by default, and the second working chamber 12 is the lower part of the shock absorber by default. When the control valve 50 is closed, the oil in the shock absorber flows through the first working chamber 11, the second working chamber 12 and the oil storage chamber 21 through the restoring valve 30 and the compression valve 40; and when the control valve 50 is opened, a part of the oil in the shock absorber flows through the first working chamber 11, the second working chamber 12 and the oil storage chamber 21 through the restoring valve 30 and the compression valve 40. At the same time, the control valve 50 also participates in the damping adjustment of the shock absorber. The oil in the first working chamber 11 can flow into the oil storage chamber 21 through the control valve 50, thereby providing another damping curve for the shock absorber to meet different damping requirements under different road conditions.

[0035] In an optional embodiment of the present application, an adjusting channel 22 is provided between the inner shell 10 and the outer shell 20, and the first working chamber 11 is connected to the oil storage chamber 21 through the adjusting channel 22. The adjusting channel 22 includes a first end and a second end, the first end is connected to the first working chamber 11, and the other end is connected to the oil storage chamber 21. Further, a control valve 50 is provided at one end of the adjusting channel 22 close to the oil storage chamber 21, and the control valve 50 includes a first valve port 51 and a second valve port 52 that are connected to each other, the first end of the adjusting channel 22 is connected to the first working chamber 11, the second end of the adjusting channel 22 is connected to the first valve port 51, and the second valve port 52 is connected to the oil storage chamber 21.

[0036] In actual applications, the control valve 50 can also be set in the middle position of the regulating channel 22, and the regulating channel 22 is divided into two sub-channels. The first valve port 51 and the second valve port 52 of the control valve 50 can be connected to the two sub-channels respectively. The present application does not make any specific limitation on the positional relationship between the control valve 50 and the regulating channel 22.

[0037] In an optional embodiment of the present application, the inner shell 10 is provided with an oil outlet 13 , the cross-section of the first end of the regulating channel 22 is adapted to the shape of the oil outlet 13 , and the regulating channel 22 is connected to the first working chamber 11 through the oil outlet 13 .

[0038] Specifically, the oil outlet 13 is arranged at one end of the inner shell away from the compression valve 40, and the oil outlet 13 can be arranged in a circular shape. Accordingly, the first end section of the regulating channel 22 is also a circle that matches the shape of the oil outlet 13, and the regulating channel 22 as a whole forms a similar circular tube-like structure. It can be understood that when the regulating channel 22 is in a circular tube shape, the flow resistance of the oil in the regulating channel 22 can be reduced; the oil outlet 13 is arranged at one end of the inner shell away from the compression valve 40, which can ensure that when the recovery valve 30 moves back and forth in the first direction in the inner shell 10, the oil outlet 13 is located in the first working chamber 11. In practical applications, different damping curves can be achieved by changing the diameter of the regulating channel 22 to adapt to different road conditions.

[0039] Optionally, a plurality of regulating channels 22 are provided between the inner shell 10 and the outer shell 20 , and the plurality of regulating channels 22 are evenly spaced along the circumference of the inner shell 10 . The shock absorber includes a plurality of control valves 50 , wherein one control valve 50 is provided corresponding to one regulating channel 22 .

[0040] In practical applications, one or more control valves 50 can be opened. When the number of control valves 50 opened is different, the oil flow rate in the first working chamber 11 and the oil storage chamber 21 will also be different, so that the shock absorber can achieve different damping curves and exhibit different damping characteristics, thereby being able to adapt to the damping requirements under more different road conditions.

[0041] Optionally, the cross-sectional areas of the plurality of adjustment channels 22 along the radial direction are different.

[0042] It is understandable that, since the radial cross-sectional areas of the multiple adjustment channels 22 are different, when different control valves 50 are opened, the amount of oil that can pass through different adjustment channels 22 is also different, so that different damping curves can be provided when different control valves 50 are opened.

[0043] Optionally, the first valve ports 51 of the plurality of control valves 50 have different diameters.

[0044] Similarly, since the diameters of the first valve ports 51 of the multiple control valves 50 are different, when different control valves 50 are opened, the amount of oil that can pass through the different control valves 50 is also different, so that different damping curves can be provided when different control valves 50 are opened.

[0045] Optionally, the control valve 50 includes at least one of a solenoid valve, an electric valve, a pneumatic valve, and a hydraulic valve.

[0046] In one embodiment of the present application, the control valve 50 is a solenoid valve. In practical applications, the solenoid valve is easy to install, has flexible installation positions, and has high control accuracy and reliability. It should be noted that the present application does not specifically limit the specific type of the control valve 50. In practical applications, the control valve 50 can be used to control the flow of oil between the first working chamber 11 and the oil storage chamber 21. Technicians can choose according to the actual application scenario of the shock absorber.

[0047] In an optional embodiment of the present application, the inner shell 10 is respectively provided with a first opening and a second opening at both ends along the first direction, and the compression valve 40 is connected to the second opening; the outer shell 20 is provided with a third opening at one end close to the first opening; the shock absorber also includes an end cover 60, which is connected to the inner shell 10 and the outer shell 20, and blocks the first opening and the third opening at the same time.

[0048] It is understandable that the inner shell 10 and the outer shell 20 are provided with openings to facilitate the installation of the internal structure and the injection of oil. Furthermore, a seal can be provided between the end cover 60 and the inner shell 10 and the outer shell 20. The seal can be a silicone seal, a rubber seal, etc. The provision of a seal helps to improve the sealing of the first working chamber 11, the second working chamber 12 and the oil storage chamber 21 of the shock absorber.

[0049] For example, in the embodiment of the present application, two regulating channels 22 are provided between the inner shell 10 and the outer shell 20, and each regulating channel 22 is provided with a corresponding control valve 50. The two regulating channels 22 can be set to be the same or different, and the two control valves 50 can be selected to have the same specifications or different specifications. It can be understood that when the two regulating channels 22 are the same as the two control valves 50, the shock absorber can provide three damping curves by controlling the opening and closing of the two control valves 50.

[0050] The process of realizing different damping curves in three different working modes of selectively opening the two control valves 50 is described in detail below.

[0051] In the first mode, the two control valves 50 are closed simultaneously.

[0052] When the piston rod 31 moves to the upper end, the volume of the first working chamber 11 decreases, the oil pressure increases, and the oil flows from the first working chamber 11 to the second working chamber 12 through the restoring valve 30. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the oil in the oil storage chamber 21 is supplemented to the second working chamber 12 through the compression valve 40. When the piston rod 31 moves to the lower end, the volume of the second working chamber 12 decreases, the oil pressure increases, and part of the oil flows from the second working chamber 12 to the first working chamber 11 through the restoring valve 30. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the excess oil flows to the oil storage chamber 21 through the compression valve 40. Since the two control valves 50 are both in the closed state, no oil flows in the regulating channel 22.

[0053] The second mode: one of the two control valves 50 is opened.

[0054] When the piston rod 31 moves toward the upper end, the volume of the first working chamber 11 becomes smaller, the oil pressure increases, and a part of the oil flows from the first working chamber 11 to the second working chamber 12 through the restoring valve 30. A part of the oil in the first working chamber 11 enters the regulating channel 22 through one of the oil outlets 13 provided on the inner shell 10, and then enters the control valve 50 through the first valve port 51 of the opened control valve 50, and finally enters the oil storage chamber 21 through the second valve port 52. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the oil in the oil storage chamber 21 is supplemented into the second working chamber 12 through the compression valve 40; when the piston rod 31 moves toward the lower end, the volume of the second working chamber 12 decreases, the oil pressure increases, and a part of the oil flows from the second working chamber 12 into the first working chamber 11 through the recovery valve 30, and a part of the oil in the first working chamber 11 enters the regulating channel 22 through one of the oil outlets 13 provided on the inner shell 10, and then enters the control valve 50 through the first valve port 51 of the opened control valve 50, and finally enters the oil storage chamber 21 through the second valve port 52. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the excess oil flows into the oil storage chamber 21 through the compression valve 40. Since only one of the control valves 50 is opened, the oil does not enter the other control valve 50.

[0055] The third mode: the two control valves 50 are opened simultaneously.

[0056] When the piston rod 31 moves to the upper end, part of the oil flows from the first working chamber 11 to the second working chamber 12 through the restoring valve 30, and part of the oil in the first working chamber 11 enters the two regulating channels 22 respectively through the two oil outlets 13 on the inner shell 10, and then enters the two control valves 50 respectively through the first valve ports 51 on the two control valves 50, and finally enters the oil storage chamber 21 through the second valve ports 52 of the two control valves 50. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the oil in the oil storage chamber 21 is replenished into the second working chamber 12 through the compression valve 40; when the piston rod 31 moves toward the lower end, a portion of the oil flows from the second working chamber 12 into the first working chamber 11 through the recovery valve 30, and a portion of the oil in the first working chamber 11 enters the two regulating channels 22 through the two oil outlets 13 on the inner shell 10, and then enters the two control valves 50 through the first valve ports 51 on the two control valves 50, and finally enters the oil storage chamber 21 through the second valve ports 52 of the two control valves 50. Since the volume of the first working chamber 11 is smaller than that of the second working chamber 12, the excess oil flows into the oil storage chamber 21 through the compression valve 40. Since the two control valves 50 are opened at the same time, the oil needs to pass through the two control valves 50 at the same time.

[0057] In the above three modes, since the flow modes of the oil between the first working chamber 11 , the second working chamber 12 and the oil storage chamber 21 are different, three different damping curves can be provided.

[0058] Further, when the two regulating channels 22 are different from the two control valves 50, the shock absorber can provide four damping curves by controlling the opening and closing of the two control valves 50. Specifically, since the two control valves 50 are different from the regulating channels 22, the amount of oil flowing between the first working chamber 11 and the oil storage chamber 21 connected by the two control valves 50 is different. Therefore, four different damping curves can be provided by closing both control valves 50, opening both control valves 50, opening one of the control valves 50, and opening the other control valve 50.

[0059] In summary, the shock absorber provided in the embodiment of the present application has at least the following beneficial effects:

[0060] In the embodiment of the present application, the restoring valve of the shock absorber can control the flow of oil between the first working chamber and the second working chamber. Furthermore, the compression valve separates the second working chamber from the oil storage chamber and is used to control the flow of oil between the second working chamber and the oil storage chamber. In addition, the first working chamber is also connected to the oil storage chamber, and the control valve is arranged between the first working chamber and the oil storage chamber, so that the control valve can control the flow of oil between the first working chamber and the oil storage chamber. When the control valve is closed, the oil in the shock absorber can flow through the restoring valve and the compression valve in the first working chamber, the second working chamber and the oil storage chamber; and when the control valve is opened, a part of the oil in the shock absorber flows through the restoring valve and the compression valve in the first working chamber, the second working chamber and the oil storage chamber. At the same time, the control valve also participates in the damping adjustment of the shock absorber. The oil in the first working chamber can flow into the oil storage chamber through the control valve, thereby providing another damping curve for the shock absorber. The shock absorber in the embodiment of the present application can provide different damping curves to achieve multi-level adjustment of the shock absorber damping, thereby achieving differentiated vibration reduction effects under different road conditions and meeting different damping requirements under different road conditions.

[0061] The application also discloses a suspension system, comprising the shock absorber as described above.

[0062] The present application also discloses a vehicle, comprising the shock absorber as described above, or the suspension system as described above.

[0063] It should be noted that the suspension system provided in the embodiment of the present application has the same or similar beneficial effects as the shock absorber as described above for the vehicle, which will not be described in detail here.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0065] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A shock absorber, characterized in that: include: An inner shell (10), an outer shell (20) and a control valve (50); wherein: The inner shell (10) is provided with a working chamber (101); the outer shell (20) is sleeved outside the inner shell (10) and encloses the inner shell (10) to form an oil storage chamber (21); the control valve (50) is connected between the working chamber (101) and the oil storage chamber (21); the control valve (50) is used to control the flow of oil between the working chamber (101) and the oil storage chamber (21).

2. The shock absorber according to claim 1, characterized in that: An adjusting passage (22) is provided between the inner shell (10) and the outer shell (20); the control valve (50) comprises a first valve port (51) and a second valve port (52) which are connected to each other; the adjusting passage (22) comprises a first end and a second end; the first end is connected to the working chamber (101); the second end is connected to the first valve port (51); and the second valve port (52) is connected to the oil storage chamber (21).

3. The shock absorber according to claim 2, characterized in that: The inner shell (10) is provided with an oil outlet (13), the cross section of the first end of the regulating channel (22) is adapted to the shape of the oil outlet (13), and the regulating channel (22) is connected to the working chamber (101) through the oil outlet (13).

4. The vibration absorber according to claim 2, characterized in that: A plurality of regulating channels (22) are arranged between the inner shell (10) and the outer shell (20), and the plurality of regulating channels (22) are evenly spaced along the circumference of the inner shell (10). The shock absorber comprises a plurality of control valves (50), wherein one control valve (50) is arranged corresponding to one regulating channel (22).

5. The shock absorber according to claim 4, characterized in that The cross-sectional areas of the plurality of regulating channels (22) along the radial direction are different.

6. The shock absorber according to claim 4, characterized in that The first valve ports (51) of the plurality of control valves (50) have different diameters.

7. The vibration absorber according to claim 1, characterized in that: The shock absorber further comprises a restoring valve (30) and a compression valve (40); wherein, The restoring valve (30) is movably connected in the inner shell (10) and divides the working chamber (101) into a first working chamber (11) and a second working chamber (12), and the restoring valve (30) is used to control the flow of oil between the first working chamber (11) and the second working chamber (12); The compression valve (40) is connected to the inner shell (10) and is spaced apart from the recovery valve (30). The compression valve (40) separates the second working chamber (12) from the oil storage chamber (21). The compression valve (40) is used to control the flow of oil between the second working chamber (12) and the oil storage chamber (21).

8. The shock absorber according to claim 7, characterized in that The inner shell (10) is provided with a first opening and a second opening at two ends along a first direction, respectively, and the compression valve (40) is connected to the second opening; the outer shell (20) is provided with a third opening at one end close to the first opening; The vibration absorber further comprises an end cover (60), wherein the end cover (60) is connected to the inner shell (10) and the outer shell (20) and simultaneously blocks the first opening and the third opening.

9. A suspension system, characterized in that: Comprising the vibration absorber according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the shock absorber according to any one of claims 1 to 8, or the suspension system according to claim 9.

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