Shock absorber, suspension system and vehicle

Abstract

The utility model discloses a shock absorber and a vehicle, the shock absorber comprises: a housing, the housing comprises a first cylinder, a second cylinder and a dust cover, the dust cover is telescopically connected between the first cylinder and the second cylinder; the piston rod assembly comprises a piston rod and a lining, an outer sleeve is connected between the lining and the second cylinder, the lining is suitable for being connected with a suspension system of the vehicle, and the piston rod is arranged in the shell. Therefore, the first axial end of the piston rod extends into the outer sleeve from the second barrel and is in threaded connection with the outer sleeve, the through holes are formed in the two radial opposite sides of the lining, and the limiting hole is formed in the first axial end of the piston rod, so that the limiting hole corresponds to the through holes; in this way, the fixing procedure of the piston rod and the disassembling scheme of the piston rod and the lining can be optimized through cooperation of the limiting holes and the through holes, meanwhile, the problems of scratching or abrasion and the like of the piston rod in the disassembling process can be avoided, and furthermore, maintenance and replacement of internal devices of the shock absorber can be facilitated.

Description

Technical Field

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

[0002] With the advancement of technology and the improvement of people's living standards, vehicles have become an indispensable means of transportation. Vehicles are equipped with a suspension system, which transmits the interaction forces between the vehicle body and the ground. The suspension transmits the force and torque of road surface feedback. During this transmission process, the suspension attenuates wheel vibration, mitigates impact, and enhances the driver's driving experience, ensuring the vehicle achieves ideal motion characteristics and stable driving capabilities.

[0003] Conventional suspension systems are mostly composed of elastic parts, guide mechanisms, shock absorbers and other structures. Shock absorbers play a vital role in the suspension system. They can not only absorb and attenuate vibrations to improve driving comfort, but also help control the body posture and help maintain the vehicle's controllability and safety.

[0004] In related technologies, the lower end of the inverted shock absorber of the suspension system is connected to the bushing through a piston rod and finally to the lower control arm. If the components inside the shock absorber need to be repaired or replaced, professional and standardized equipment and tooling are required. In addition, the disassembly process may cause scratches or wear on components such as the piston rod, which will increase the cost of repair and replacement. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a shock absorber having a structure that can optimize the disassembly of the piston rod and bushing, thereby preventing the piston rod from being scratched or worn during the disassembly process.

[0006] The utility model further proposes a suspension system.

[0007] The utility model further provides a vehicle.

[0008] According to the shock absorber of the utility model, it includes: a shell, the shell includes a first cylinder, a second cylinder and a dust cover, the first cylinder is provided with a connecting part, the connecting part is suitable for being connected to the vehicle body, and the dust cover is telescopically connected between the first cylinder and the second cylinder; a piston rod assembly, the piston rod assembly includes a piston rod and a bushing, the bushing is arranged on the outside of the second cylinder and is connected to the second cylinder with an outer sleeve, the bushing is suitable for being connected to the suspension system of the vehicle, the piston rod is arranged in the shell, the axial first end of the piston rod extends from the second cylinder into the outer sleeve and is threadedly connected to the outer sleeve, through holes are opened on radially opposite sides of the bushing, and a limiting hole is opened at the axial first end of the piston rod, and the limiting hole corresponds to the through hole.

[0009] Therefore, by extending the axial first end of the piston rod from the second cylinder into the outer sleeve and threadedly connected to the outer sleeve, through holes are opened on the radially opposite sides of the bushing, and a limiting hole is opened at the axial first end of the piston rod, so that the limiting hole and the through hole correspond to each other. In this way, the fixing process of the piston rod and the disassembly plan of the piston rod and the bushing can be optimized through the cooperation of the limiting hole and the through hole. At the same time, problems such as scratches or wear on the piston rod during the disassembly process can be avoided. Furthermore, the maintenance and replacement of internal components of the shock absorber can be facilitated.

[0010] In some examples of the present invention, the limiting hole is an inner polygonal hole.

[0011] In some examples of the present invention, the diameter of the limiting hole is smaller than the diameter of the through hole.

[0012] In some examples of the present invention, the bushing includes an outer connecting ring and a bushing body, the bushing body is suitable for being connected to the suspension system of the vehicle, the outer connecting ring is arranged on the outside of the bushing body and is connected to the second cylinder with the outer sleeve, the bushing body and the outer connecting ring are detachably interference fit, and the through hole is located on the outer connecting ring.

[0013] In some examples of the present invention, a protrusion is provided at the axial first end of the piston rod, the protrusion is provided to protrude into the through hole on one side of the bushing body, the protrusion is spaced apart from the bushing body, and the limiting hole is provided in the protrusion.

[0014] In some examples of the present invention, the bushing body includes an inner tube portion, a rubber portion and an outer tube portion, the outer tube portion and the inner tube portion are respectively surrounded by an outer ring and an inner ring arranged on the rubber portion, and the rubber portion is respectively connected and fixed to the outer tube portion and the inner tube portion.

[0015] In some examples of the present invention, the outer sleeve is fixed to the outer connecting ring and the second cylinder respectively by welding.

[0016] In some examples of the present invention, the piston rod at least partially extends into the first cylinder, a seal is provided between the first cylinder and the piston rod, and the second cylinder is detachably clamped and fixed to the dust cover.

[0017] A suspension system according to an embodiment of the present invention includes: the shock absorber described above.

[0018] A vehicle according to an embodiment of the present invention includes: the suspension system described above.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a schematic diagram of a shock absorber according to an embodiment of the present utility model;

[0022] Figure 2 is a cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0023] Figure 3 is a partial cross-sectional view of a shock absorber according to an embodiment of the present utility model;

[0024] Figure 4 It is a partial exploded view of a shock absorber according to an embodiment of the present utility model.

[0025] Reference numerals:

[0026] 100. Shock absorber;

[0027] 10. Housing; 101. First cylinder; 1011. Connecting portion; 102. Second cylinder; 103. Dust cover;

[0028] 40. Piston rod assembly; 402. Bushing; 403. Outer sleeve; 4024. Through hole; 4025. External connecting ring; 4026. Bushing body; 4027. Inner tube; 4028. Rubber part; 4029. Outer tube;

[0029] 20. Piston rod; 201. Limiting hole; 202. Protrusion;

[0030] 30. Seals. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0032] Reference below Figures 1-4 A shock absorber 100 according to an embodiment of the present invention is described. The shock absorber 100 may be applied to a suspension system, and the suspension system may be applied to a vehicle.

[0033] Combine Figures 1-4 As shown, the shock absorber 100 according to the present invention can mainly include: a housing 10 and a piston rod 20. The housing 10 includes a first cylinder 101, a second cylinder 102 and a dust cover 103, which can form the basic framework of the shock absorber housing 10 and ensure the rationality and reliability of the structural design of the shock absorber 100.

[0034] Furthermore, the dust cover 103 is retractably connected between the first barrel 101 and the second barrel 102. This not only prevents impurities from entering the shock absorber 100 and contaminating the lubricating oil, thereby ensuring the good performance of the lubricating oil, but also prevents impurities from causing wear on the internal parts of the shock absorber 100, thereby avoiding problems such as oil leakage or component damage caused by impurities, and effectively extending the service life of the shock absorber 100. In addition, the retractability of the dust cover 103 allows the dust cover 103 to accommodate the relative movement between the first barrel 101 and the second barrel 102 of the shock absorber 100.

[0035] Furthermore, the piston rod assembly 40 includes a piston rod 20 and a bushing 402 , which can constitute the basic structure of the piston rod assembly 40 and ensure the rationality and reliability of the structural design of the piston rod assembly 40 .

[0036] Furthermore, the first cylinder 101 is provided with a connecting portion 1011, which is suitable for being connected to the vehicle body, and the bushing 402 is suitable for being connected to the suspension system of the vehicle, so that the connection between the first cylinder 101 of the shock absorber and the vehicle body can be achieved, and the connection between the bushing 402 and the suspension system can be achieved, so that the shock absorber 100 can be set between the vehicle body and the suspension system, and part of the impact and vibration transmitted to the suspension system during the driving of the vehicle can be effectively transmitted to the shock absorber 100. After being buffered by the shock absorber 100, the remaining impact force is transmitted to the vehicle body, thereby reducing the vibration amplitude transmitted from the suspension system to the vehicle body, which can help the shock absorber 100 to function effectively.

[0037] Furthermore, the bushing 402 is arranged on the outside of the second cylinder 102 and is connected to the second cylinder 102 by an outer sleeve 403. Specifically, the bushing 402 is arranged on the outside of the second cylinder 102 to facilitate the connection between the bushing 402 and the suspension system, and to facilitate the installation and disassembly of the bushing 402; the outer sleeve 403 is connected between the bushing 402 and the second cylinder 102, which not only improves the installation stability of the piston rod 20 and the bushing 402, and prevents the piston rod 20 and the bushing 402 from loosening, shaking or falling off, but also realizes the connection between the piston rod assembly 40 and the second cylinder 102, so that the various structures of the shock absorber 100 can cooperate with each other to realize the normal operation of the shock absorber 100 and ensure the normal working performance of the shock absorber 100.

[0038] Furthermore, the piston rod 20 is arranged in the housing 10, and one end of the piston rod 20 is connected to the bushing 402, and the other end is connected to the first cylinder 101. This facilitates the reciprocating motion of the piston rod 20 and provides sufficient movement space for the piston rod 20, so that the shock absorber 100 can effectively absorb and weaken the impact and vibration energy transmitted to the shock absorber 100 to keep the vehicle body stable.

[0039] Furthermore, the axial first end of the piston rod 20 extends from the second cylinder 102 into the outer sleeve 403 and is threadedly connected to the outer sleeve 403. Through holes 4024 are provided on the radially opposite sides of the bushing 402. A limiting hole 201 is provided at the axial first end of the piston rod 20. The limiting hole 201 corresponds to the through hole 4024, so that the matching tool can penetrate the through hole 4024 and extend into the limiting hole 201 to fix the piston rod 20. The piston rod 20 and the bushing 402 can be disassembled by rotating the bushing 402. At the same time, it can avoid scratching the piston rod 20, and can facilitate the disassembly of the outer sleeve 403 and the second cylinder 102, thereby facilitating the maintenance and replacement of internal components of the shock absorber 100.

[0040] Therefore, by extending the axial first end of the piston rod 20 from the second cylinder 102 into the outer sleeve 403 and threadedly connected to the outer sleeve 403, and opening through holes 4024 on the radially opposite sides of the bushing 402, the axial first end of the piston rod 20 is opened with a limiting hole 201, so that the limiting hole 201 and the through hole 4024 correspond to each other. In this way, the fixing process of the piston rod 20 can be optimized through the cooperation of the limiting hole 201 and the through hole 4024, and the disassembly scheme of the piston rod 20 and the bushing 402 can be optimized. At the same time, it can avoid problems such as scratches or wear on the piston rod 20 during the disassembly process. Furthermore, it can facilitate the maintenance and replacement of internal components of the shock absorber 100 and reduce the maintenance cost of the shock absorber 100.

[0041] In some embodiments of the present invention, a threaded connection is adopted between the piston rod 20 and the outer sleeve 403, which not only makes the connection between the piston rod 20 and the outer sleeve 403 simple, direct, stable and reliable, but also facilitates the installation and disassembly between the piston rod 20 and the outer sleeve 403.

[0042] Combine Figure 2 、 Figure 3 and Figure 4 As shown, the limiting hole 201 is an inner polygonal hole. Specifically, by setting the limiting hole 201 as an inner polygonal hole, the inner polygonal hole can cooperate with the polygonal rod or polygonal shaft to achieve the fixing operation of the piston rod 20. This not only avoids problems such as wear or scratches on the piston rod 20 during the fixing process of the piston rod 20, but also helps to improve the disassembly solution of the piston rod 20 and the bushing 402.

[0043] Combine Figure 2 、 Figure 3 and Figure 4 As shown, the diameter of the limiting hole 201 is smaller than the diameter of the through hole 4024. Specifically, by making the diameter of the limiting hole 201 smaller than the diameter of the through hole 4024, the axial projection of the limiting hole 201 can be located within the radial projection of the through hole 4024. This allows a matching tool to pass through the through hole 4024 and into the limiting hole 201 to secure the piston rod 20, thereby facilitating both the disassembly of the piston rod 20 and the bushing 402 and the installation of the piston rod 20 and the bushing 402.

[0044] Combine Figure 2 、 Figure 3 and Figure 4 As shown, the bushing 402 includes an outer connecting ring 4025 and a bushing body 4026. The bushing body 4026 is suitable for being connected to the suspension system of the vehicle. The outer connecting ring 4025 is arranged on the outside of the bushing body 4026 and is connected to the second cylinder 102 with an outer sleeve 403. The bushing body 4026 and the outer connecting ring 4025 are detachably interference fit, and the through hole 4024 is located on the outer connecting ring 4025.

[0045] Specifically, the outer connecting ring 4025 and the bushing body 4026 together constitute the bushing 402, and the bushing body 4026 is adapted to be connected to the vehicle's suspension system. The outer connecting ring 4025 is disposed outside the bushing body 4026 and is connected to the second cylinder 102 via the outer sleeve 403. This not only simplifies the connection between the suspension system and the shock absorber 100, improving the stability and reliability of the connection between the suspension system and the shock absorber 100, but also absorbs some of the vibration energy transmitted from the suspension system to the shock absorber 100, thereby preventing wear or loosening between the suspension system and the shock absorber 100 due to factors such as vibration. Furthermore, the outer connecting ring 4025 facilitates the installation and fixation of the bushing body 4026, and the outer sleeve 403 improves the reliability and stability of the connection between the outer connecting ring 4025 and the second cylinder 102.

[0046] Furthermore, the bushing body 4026 and the outer connecting ring 4025 are detachably interference fit, which not only makes the connection between the bushing body 4026 and the outer connecting ring 4025 tighter, but also prevents the bushing body 4026 from detaching from the outer connecting ring 4025, resulting in failure of the connection between the suspension system and the shock absorber 100, but also ensures the uniform transmission of the force between the bushing body 4026 and the outer connecting ring 4025, thereby improving the stability and reliability of the shock absorber 100 structure.

[0047] Furthermore, the through hole 4024 is provided on the outer connecting ring 4025 , so that the through hole 4024 can be effectively matched with the limiting hole 201 by pressing out the bushing body 4026 , thereby optimizing the disassembly scheme of the bushing 402 and the piston rod 20 .

[0048] Combine Figure 2 、 Figure 3 and Figure 4 As shown, a protrusion 202 is provided at the axial first end of the piston rod 20. The protrusion 202 protrudes into the through hole 4024 on one side of the bushing body 4026. The protrusion 202 and the bushing body 4026 are spaced apart from each other, and a limiting hole 201 is provided in the protrusion 202. Specifically, a protrusion 202 is provided at the axial first end of the piston rod 20, and a limiting hole 201 is provided in the protrusion 202. A through hole 4024 is provided on the outer connecting ring 4025 of the bushing 402, so that the protrusion 202 protrudes toward the through hole 4024 on one side of the bushing body 4026, so that the protrusion 202 of the piston rod 20 is located in the through hole 4024 of the outer connecting ring 4025. In this way, not only can a reliable connection between the piston rod 20 and the bushing 402 be achieved, but also the through hole 4024 and the limiting hole 201 can be reserved to facilitate the installation and disassembly between the piston rod 20 and the bushing 402, and the structural design of the shock absorber 100 can be optimized.

[0049] In addition, the protrusion 202 and the bushing body 4026 are spaced from each other, that is, the protrusion 202 does not directly contact the bushing body 4026. This not only prevents the protrusion 202 from contacting or squeezing the bushing body 4026, causing the bushing body 4026 to be deformed due to local stress concentration, but also makes the force on the bushing body 4026 more uniform. It can also avoid problems such as wear due to friction between the piston rod 20 and the bushing body 4026, which helps to improve the stability and reliability of the bushing body 4026 and the piston rod 20, and extend the service life of the bushing body 4026 and the piston rod 20.

[0050] Combine Figure 2 、 Figure 3 and Figure 4 As shown, bushing body 4026 includes an inner tube portion 4027, a rubber portion 4028, and an outer tube portion 4029. Outer tube portion 4029 and inner tube portion 4027 surround the outer and inner rings of rubber portion 4028, respectively. Rubber portion 4028 is connected and fixed to outer tube portion 4029 and inner tube portion 4027, respectively. Thus, by configuring bushing body 4026 into three parts, so that it is sequentially mounted from the inside out along inner tube portion 4027, rubber portion 4028, and outer tube portion 4029, not only can the load capacity of bushing body 4026 be improved, and the reliability and stability of the connection between bushing body 4026 and the suspension system be enhanced, but also, by partially disassembling the structure, the shock absorber 100 can be adapted to suspension systems of different sizes, thereby enhancing the flexibility and versatility of shock absorber 100.

[0051] Combine Figure 2 、 Figure 3 and Figure 4 As shown, the outer sleeve 403 is welded and fixed to the outer connecting ring 4025 and the second cylinder 102, respectively. Specifically, by welding the outer sleeve 403 to the outer connecting ring 4025 and the second cylinder 102, respectively, not only can the connection between the outer connecting ring 4025 and the outer sleeve 403, and the connection between the outer sleeve 403 and the second cylinder 102 be simple, direct, stable and reliable, but it can also effectively prevent the connection failure between the outer connecting ring 4025 and the outer sleeve 403, and between the outer sleeve 403 and the second cylinder 102, but also facilitate the installation and removal of the outer sleeve 403, the outer connecting ring 4025 and the second cylinder 102, respectively. In addition, compared with bolt connection and other methods, welding does not require additional connectors and installation space, making the structure of the shock absorber 100 more compact.

[0052] In some embodiments of the present invention, a weld exists between the outer sleeve 403 and the outer connecting ring 4025 .

[0053] Combine Figure 2 、 Figure 3 and Figure 4As shown, the piston rod 20 at least partially extends into the first cylinder 101 , a seal 30 is provided between the first cylinder 101 and the piston rod 20 , and the second cylinder 102 and the dust cover 103 are detachably clamped and fixed.

[0054] Specifically, by extending the piston rod 20 at least partially into the first cylinder 101 and arranging a seal 30 between the first cylinder 101 and the piston rod 20, not only can an effective sealing barrier be formed to ensure a good sealing effect of the space in the first cylinder 101 and avoid leakage of liquid or gas in the shock absorber 100, but also the installation of the piston rod 20 and the first cylinder 101 can be made more stable, and problems such as loosening, displacement or deformation of the piston rod 20 and the first cylinder 101 can be prevented.

[0055] Furthermore, the second cylinder 102 and the dust cover 103 are detachably clamped and fixed, which not only ensures the stability and reliability of the connection between the second cylinder 102 and the dust cover 103, but also facilitates the installation and disassembly of the second cylinder 102 and the dust cover 103, and also prevents damage to the structures of the second cylinder 102 and the dust cover 103 during the installation and disassembly process.

[0056] Furthermore, after the second cylinder 102 and the bushing 402 are disassembled, the second cylinder 102 and the dust cover 103 are disassembled, and after the piston rod 20 is removed from the housing 10, the seal 30 is also removed. In this way, each structure is disassembled from the outside to the inside in turn, which can ensure the feasibility of the disassembly operation and prevent damage to components due to disassembly difficulties during the disassembly process.

[0057] Furthermore, the specific disassembly plan between the piston rod 20 and the bushing 402 includes the following steps: pressing the bushing body 4026 out of the outer connecting ring 4025 as a whole to ensure the connectivity of the through holes 4024 on the radially opposite sides of the outer connecting ring 4025 to ensure the effective cooperation between the through holes 4024 and the limiting holes 201; inserting the matching tool through the through hole 4024 into the limiting hole 201 of the piston rod 20 to prevent the piston rod 20 from rotating along the axis; holding the outer connecting ring 4025 of the bushing 402 with the tool to rotate it and disassemble it from the piston rod 20; disassembling the outer sleeve 403 and the second cylinder 102 respectively; after disassembling the second cylinder 102 and the dust cover 103, the piston rod 20 and the seal 30 can be removed from the housing 10 for replacement or repair. Such an arrangement can optimize the disassembly solution between the bushing 402 and the piston rod 20, and can prevent the piston rod 20 from being scratched or worn during the disassembly process, thereby preventing the piston rod 20 from increasing its maintenance cost.

[0058] In some embodiments of the present invention, since the outer connecting ring 4025 and the outer sleeve 403 are connected by welding, when the outer connecting ring 4025 needs to be rotated during the disassembly process, the disassembly process can be assisted by heating and other operations to ensure the smooth rotation of the outer connecting ring 4025.

[0059] In some embodiments of the present invention, a threaded connection may also be adopted between the through hole 4024 and the piston rod protrusion 202 .

[0060] The suspension system according to the present invention may primarily include the aforementioned shock absorber 100. Specifically, because the structure of the shock absorber 100 can optimize the disassembly of the piston rod 20 and bushing 402, thereby preventing scratches or wear on the piston rod 20 during disassembly, applying the shock absorber 100 to the suspension system can optimize the suspension system's structural design, simplify the suspension system's maintenance process, and reduce the suspension system's maintenance costs.

[0061] The vehicle according to the present invention may primarily include the aforementioned suspension system. Specifically, the suspension system structure is optimized due to the application of the shock absorber 100. Application of the suspension system to the vehicle not only ensures vehicle stability and reliability but also simplifies vehicle-related maintenance operations and reduces vehicle maintenance costs.

[0062] 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", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0063] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose 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, characterized in that: include: A housing (10), the housing (10) comprising a first cylinder (101), a second cylinder (102) and a dust cover (103), the first cylinder (101) being provided with a connecting portion (1011), the connecting portion (1011) being adapted to be connected to a vehicle body, the dust cover (103) being telescopically connected between the first cylinder (101) and the second cylinder (102); A piston rod assembly (40), the piston rod assembly (40) comprising a piston rod (20) and a bushing (402), the bushing (402) being arranged outside the second cylinder (102) and being connected to the second cylinder (102) by an outer sleeve (403), the bushing (402) being suitable for being connected to a suspension system of a vehicle, the piston rod (20) being arranged in the housing (10), the axial first end of the piston rod (20) extending from the second cylinder (102) into the outer sleeve (403) and being threadedly connected to the outer sleeve (403), the bushing (402) being provided with through holes (4024) on radially opposite sides, the piston rod (20) being provided with a limiting hole (201) at the axial first end, the limiting hole (201) corresponding to the through hole (4024).

2. The shock absorber according to claim 1, characterized in that The limiting hole (201) is an inner polygonal hole.

3. The shock absorber according to claim 2, characterized in that The aperture of the limiting hole (201) is smaller than the aperture of the through hole (4024).

4. The shock absorber according to claim 1, characterized in that The bushing (402) includes an outer connecting ring (4025) and a bushing body (4026), wherein the bushing body (4026) is suitable for being connected to a suspension system of a vehicle, wherein the outer connecting ring (4025) is arranged outside the bushing body (4026) and is connected to the outer sleeve (403) between the bushing body (4025) and the second cylinder (102), wherein the bushing body (4026) and the outer connecting ring (4025) are detachably interference-fitted, and the through hole (4024) is located on the outer connecting ring (4025).

5. The shock absorber according to claim 4, characterized in that A protrusion (202) is provided at the axial first end of the piston rod (20), and the protrusion (202) protrudes toward the through hole (4024) on one side of the bushing body (4026). The protrusion (202) and the bushing body (4026) are spaced apart from each other, and the limiting hole (201) is provided in the protrusion (202).

6. The shock absorber according to claim 4, characterized in that The bushing body (4026) includes an inner tube portion (4027), a rubber portion (4028) and an outer tube portion (4029), wherein the outer tube portion (4029) and the inner tube portion (4027) respectively surround an outer ring and an inner ring arranged on the rubber portion (4028), and the rubber portion (4028) is respectively connected and fixed to the outer tube portion (4029) and the inner tube portion (4027).

7. The shock absorber according to claim 4, characterized in that The outer sleeve (403) is welded and fixed to the outer connecting ring (4025) and the second cylinder (102) respectively.

8. The shock absorber according to claim 1, characterized in that The piston rod (20) at least partially extends into the first cylinder (101), a sealing member (30) is provided between the first cylinder (101) and the piston rod (20), and the second cylinder (102) and the dust cover (103) are detachably clamped and fixed.

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

10. A vehicle, characterized in that: include: The suspension system of claim 9.

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