Shock absorber assembly and vehicle

Abstract

The utility model discloses a shock absorber assembly and a vehicle. The shock absorber assembly comprises a cylinder barrel, a piston rod, an oil guide channel and an energy accumulator, wherein a shock absorption cavity is formed in the cylinder barrel; the piston rod is connected with a vehicle body and is provided with a piston moving in the vibration reduction cavity, and the vibration reduction cavity is divided into a first cavity and a second cavity by the piston; the oil guide channel is respectively communicated with the first cavity and the second cavity and is suitable for circulating a buffer solution; the energy accumulator is arranged in the first cavity and / or the second cavity in a deformable mode, and the energy accumulator is suitable for deforming according to the pressure in the vibration reduction cavity. According to the shock absorber assembly, the energy accumulator is arranged in the shock absorption cavity, a shell structure of the energy accumulator does not need to be additionally arranged, and the size and the weight of the shock absorber assembly are reduced.

Description

Technical Field

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

[0002] The fully active shock absorber can apply an active force to adjust the body posture in real time, which can greatly improve the ride comfort and handling performance. In the related art, an accumulator is arranged outside the shock absorber, which can improve the shock absorption effect of the shock absorber. However, the external accumulator occupies external space, which is not conducive to the system layout. Moreover, the external accumulator needs to use additional cylinder materials to store gas, and the system weight is relatively heavy. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide a shock absorber assembly. According to the shock absorber assembly of the utility model, the accumulator is arranged in the shock absorption cavity, and there is no need to additionally arrange a housing structure for the accumulator, thus reducing the volume and weight of the shock absorber assembly.

[0004] The utility model also provides a vehicle including the above shock absorber assembly.

[0005] The shock absorber assembly according to the utility model includes a cylinder barrel, a piston rod, an oil guiding channel and an accumulator. A shock absorption cavity is formed inside the cylinder barrel; the piston rod is connected to the vehicle body and is provided with a piston that moves in the shock absorption cavity, and the piston divides the shock absorption cavity into a first cavity and a second cavity; the oil guiding channels are respectively communicated with the first cavity and the second cavity and are adapted to circulate buffer liquid; the accumulator is deformably arranged in the first cavity and / or the second cavity, and the accumulator is adapted to deform according to the pressure in the shock absorption cavity.

[0006] The shock absorber assembly according to the utility model is provided with a cylinder barrel, and a shock absorption cavity is formed inside the cylinder barrel. The accumulator is deformably arranged in the shock absorption cavity and is adapted to deform when the pressure in the shock absorption cavity changes so as to balance the pressure inside the entire shock absorption cavity, thereby improving the shock absorption effect of the shock absorber assembly. The built-in accumulator can directly use the cylinder barrel as the housing of the accumulator, without additionally arranging a housing structure for the accumulator, reducing the weight and cost of the shock absorber assembly. Moreover, the built-in accumulator can reduce the space occupied by the shock absorber assembly, which is conducive to the layout of the shock absorber assembly.

[0007] According to an embodiment of the utility model, the accumulator is sleeved on at least a part of the outer periphery of the piston rod.

[0008] According to an embodiment of the present invention, the accumulator includes: a base portion and a deformable portion. The base portion is fixed to the piston rod. The deformable portion is connected to the base portion and is deformably disposed in the second cavity. The deformable portion is adapted to deform according to the pressure in the damping cavity.

[0009] According to an embodiment of the present invention, the deformable portion is configured as a bellows that surrounds the piston rod and is axially deformable on the piston rod, and a cavity is formed inside the bellows.

[0010] According to an embodiment of the present invention, the accumulator further includes: an inflation device. The inflation device is disposed inside the base portion. An inflation port communicating with the bellows is provided on the inflation device. The inflation device can selectively inject air into the cavity of the bellows.

[0011] According to an embodiment of the present invention, the accumulator further includes: a bottom plate. The bottom plate surrounds the piston rod and is connected to the end of the bellows.

[0012] According to an embodiment of the present invention, the accumulator further includes: a gasket. The gasket is disposed at one end of the piston facing the bellows and is spaced from the bellows.

[0013] According to an embodiment of the present invention, the shock absorber assembly further includes a pump body. The pump body is disposed in the oil guiding channel. The pump body is adapted to drive the flow of the buffer liquid between the first cavity and the second cavity to drive the piston rod to move relative to the cylinder barrel.

[0014] According to an embodiment of the present invention, the oil guiding channel includes: a first oil path and a second oil path. A first damping regulating valve is provided on the first oil path. The first oil path communicates the first cavity with the second cavity and is adapted to introduce the buffer liquid in the first cavity into the second cavity. A second damping regulating valve is provided on the second oil path. The second oil path communicates the second cavity with the first cavity and is adapted to introduce the buffer liquid in the second cavity into the first cavity. Wherein, the first oil path and the second oil path are respectively in communication with the pump body.

[0015] The vehicle according to the present invention will be briefly described below.

[0016] The vehicle according to the present utility model includes the shock absorber assembly in the above embodiments. Since the vehicle according to the present utility model is provided with the shock absorber assembly in the above embodiments, the shock absorber assembly can actively or passively adjust the pressure in the shock absorption cavity according to the real-time driving state of the vehicle, realize the buffering and shock absorption of the vehicle, and ensure the stability of the vehicle driving. At the same time, the accumulator is arranged in the shock absorption cavity, reducing the volume of the shock absorber assembly, and further reducing the occupied space of the shock absorber assembly on the vehicle body, facilitating the layout of other structures of the vehicle body.

[0017] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present utility model. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of a shock absorber assembly according to an embodiment of the present utility model;

[0020] Figure 2 is a schematic diagram of the shock absorber assembly when the piston rod moves downward according to an embodiment of the present utility model;

[0021] Figure 3 is a schematic diagram of the structure of the accumulator and the piston rod according to an embodiment of the present utility model;

[0022] Figure 4 is a flowchart of a control method for a shock absorption system according to an embodiment of the present utility model.

[0023] Reference Signs:

[0024] Shock absorber assembly 1;

[0025] Cylinder barrel 11, first chamber 111, second chamber 112;

[0026] Piston rod 12, piston 121;

[0027] Oil guiding channel 13, first oil path 131, first damping regulating valve 1311, second oil path 132, second damping regulating valve 1321;

[0028] Accumulator 14, base portion 141, bellows 142, gas charging device 143, bottom plate 144, gasket 145;

[0029] Pump body 15, check valve 101, rebound buffer block 102. Detailed Embodiments

[0030] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0031] The fully active shock absorber can apply an active force to adjust the vehicle body posture in real time, which can greatly improve the ride comfort and handling performance. In the related art, an accumulator is provided outside the shock absorber, which can improve the shock absorption effect of the shock absorber. However, the external accumulator occupies external space, which is not conducive to the system layout, and the external accumulator needs to use additional cylinder materials to store gas, resulting in a relatively heavy system weight.

[0032] The following refers to Figures 1 - 4 Describe a shock absorber assembly according to an embodiment of the present utility model.

[0033] The shock absorber assembly 1 according to the present utility model includes a cylinder 11, a piston rod 12, an oil guiding channel 13, and an accumulator 14. A shock absorption cavity is formed inside the cylinder 11; the piston rod 12 is connected to the vehicle body and is provided with a piston 121 that moves inside the shock absorption cavity. The piston 121 divides the shock absorption cavity into a first cavity 111 and a second cavity 112; the oil guiding channel 13 is respectively communicated with the first cavity 111 and the second cavity 112 and is adapted to circulate the buffer liquid; the accumulator 14 is deformably arranged inside the first cavity 111 and / or the second cavity 112, and the accumulator 14 is adapted to deform according to the pressure inside the shock absorption cavity.

[0034] The shock absorber assembly 1 according to the present utility model is provided with a cylinder 11. A shock absorption cavity is formed inside the cylinder 11, and the buffer liquid can be accommodated inside the shock absorption cavity. One end of the piston rod 12 is connected to the vehicle body, and the other end of the piston rod 12 extends into the shock absorption cavity. A piston 121 that can move inside the shock absorption cavity is provided on the piston rod 12. The piston 121 divides the shock absorption cavity into a first cavity 111 and a second cavity 112. The buffer liquid inside the first cavity 111 and the second cavity 112 can flow to each other through the oil guiding channel 13. When the vehicle vibrates due to road surface excitation during driving, the piston rod 12 can move relative to the cylinder 11, the pressure of the buffer liquid between the first cavity 111 and the second cavity 112 changes, and the buffer liquid flows between the first cavity 111 and the second cavity 112 through the oil guiding channel 13, realizing the buffering of the vehicle vibration by the shock absorber assembly 1, and further keeping the vehicle stable.

[0035] The accumulator 14 is deformably disposed in the first chamber 111 or the second chamber 112 and can deform when the pressure in the shock absorption chamber changes to balance the pressure inside the shock absorption chamber, thereby improving the shock absorption effect of the shock absorber assembly 1. Here, taking the accumulator 14 disposed in the second chamber 112 as an example, when the vehicle is traveling and is excited by the road surface causing the wheel to rise (for example, when the vehicle passes over a speed bump), the rising of the wheel will drive the cylinder barrel 11 to rise. At this time, the piston rod 12 moves downward relative to the cylinder barrel 11, the volume of the first chamber 111 decreases, and the volume of the second chamber 112 increases. The buffer fluid in the first chamber 111 enters the second chamber 112 through the oil guiding channel 13. The accumulator 14 in the second chamber 112 is deformed by the extrusion of the buffer fluid. The space occupied by the deformed accumulator 14 decreases, which can reserve more space for the buffer fluid and facilitate the buffer fluid to enter the second chamber 112. At the same time, it can also effectively absorb and disperse the impact energy of the road surface, improving the shock absorption effect of the shock absorber assembly 1. Different from the external accumulator 14 solution in the related art, in the present utility model, the accumulator 14 is built into the cylinder barrel 11, and the cylinder barrel 11 can be directly used as the housing of the accumulator 14 without additionally setting the housing structure of the accumulator 14, reducing the weight and cost of the shock absorber assembly 1. And the built-in accumulator 14 can reduce the space occupied by the shock absorber assembly 1, which is beneficial to the layout of the shock absorber assembly 1.

[0036] In some embodiments, the buffer fluid can be a lubricating oil fluid.

[0037] According to an embodiment of the present utility model, the accumulator 14 is sleeved on at least a part of the outer periphery of the piston rod 12. Sleeving the accumulator 14 on the outer periphery of the piston rod 12 can make more effective use of the space inside the shock absorber assembly 1. This design reduces the need for additional space, makes the shock absorber assembly 1 more compact, and is suitable for installation in a limited space such as a vehicle.

[0038] According to an embodiment of the present utility model, the accumulator 14 includes: a base portion 141 and a deformable portion. The base portion 141 is fixed to the piston rod 12; the deformable portion is connected to the base portion 141, the deformable portion is deformably disposed in the second chamber 112, and the deformable portion is adapted to deform according to the pressure in the shock absorption chamber. The base portion 141 being fixed to the piston rod 12 provides a stable support structure for the accumulator 14, while the deformable portion is responsible for deforming according to the pressure change in the shock absorption chamber, enabling the shock absorber assembly 1 to flexibly respond to various impacts and vibrations from the road surface. Regardless of how the intensity and frequency of the impact change, the deformable portion can absorb and disperse these energies through appropriate deformation, thereby maintaining the stability of the vehicle and the comfort of riding.

[0039] According to an embodiment of the present utility model, the deformation part is configured as a bellows 142 that surrounds the piston rod 12 and is axially deformable on the piston rod 12. A cavity is formed inside the bellows 142. The design of the bellows 142 enables the deformation part to deform more easily axially to better adapt to the pressure change in the shock absorption cavity, which helps to more effectively absorb and disperse the impact and vibration energy from the road surface. The cavity inside the bellows 142 can store a certain amount of gas or liquid as part of the buffer liquid. When impacted, the medium in the cavity can be compressed and store energy; after the impact, the stored energy can be gradually released to further attenuate the vibration. This energy storage and release mechanism helps to improve the overall performance of the shock absorber. In addition, the design of the bellows 142 surrounding the piston rod 12 enables the accumulator 14 to surround the piston rod 12 more closely, optimizing the space utilization inside the shock absorber assembly 1.

[0040] According to an embodiment of the present utility model, the accumulator 14 further includes: an air filling device 143, which is arranged inside the base part 141. An air filling port communicating with the bellows 142 is arranged on the air filling device 143, and the air filling device 143 can selectively inject air into the cavity of the bellows 142.

[0041] The accumulator 14 is provided with an inflation device 143. An inflation port is provided on the inflation device 143, and the inflation port is communicated with the bellows 142 to facilitate the inflation of the bellows 142 by the inflation device 143. By injecting air into the cavity of the bellows 142 through the inflation device 143, the initial pressure and stiffness of the accumulator 14 can be flexibly adjusted. If the bellows 142 is not inflated, it may cause the bellows 142 to be in a compressed state under the pressure of the buffer liquid all the time after being assembled into the damping cavity, and it is impossible to perform the conversion of deformation and deformation recovery, and thus the function of the accumulator 14 to enhance the damping effect of the shock absorber assembly 1 cannot be realized. Specifically, when the bellows 142 is filled with air, the bellows 142 will have a certain stiffness. At this time, when the piston rod 12 moves downward relative to the cylinder barrel 11 (for example, when the vehicle passes over a speed bump and the wheel drives the cylinder barrel 11 to move upward), the buffer liquid in the first chamber 111 flows into the second chamber 112, the buffer liquid in the second chamber 112 increases, the buffer liquid squeezes the bellows 142, the bellows 142 deforms, and the air in the bellows 142 is compressed to absorb energy; when the piston rod 12 moves upward relative to the cylinder barrel 11, the buffer liquid in the second chamber 112 flows to the first chamber 111, the pressure of the buffer liquid on the bellows 142 decreases, and the bellows 142 can quickly complete the deformation recovery under the pressure of the air and the force after its own deformation, releasing energy. This adjustment ability enables the shock absorber assembly 1 to optimize its damping performance according to different vehicle types, driving conditions or the needs of the driver, improving the ride comfort and vehicle stability. By precisely controlling the amount of air added to the bellows 142, the pressure in the accumulator 14 can be controlled, and thus it can be ensured that the shock absorber can maintain stable performance under various working conditions, avoiding problems such as a decrease in damping effect or component damage caused by insufficient or excessive pressure, and improving the safety and stability of the vehicle.

[0042] According to an embodiment of the present invention, the accumulator 14 further includes: a bottom plate 144, the bottom plate 144 surrounds the piston rod 12 and is connected to the end of the bellows 142. The bottom plate 144 is arranged at the end of the bellows 142, and the arrangement of the bottom plate 144 increases the contact area between the accumulator 14 and the buffer liquid, so that the accumulator 14 can quickly respond when the piston rod 12 moves relative to the cylinder barrel 11 (the pressure of the buffer liquid in the second chamber 112 changes), improving the damping effect of the shock absorber assembly 1.

[0043] According to an embodiment of the present invention, the accumulator 14 further includes: a gasket 145, the gasket 145 is arranged at one end of the piston 121 facing the bellows 142 and is spaced from the bellows 142. The gasket 145 is arranged on the piston 121 and is spaced from the bottom plate 144 to prevent the bellows 142 from hitting the piston 121 and being damaged when the bellows 142 recovers from deformation.

[0044] According to an embodiment of the present utility model, the shock absorber assembly 1 further includes a pump body 15. The pump body 15 is communicated with the oil guiding channel 13, and the pump body 15 is adapted to drive the flow of the buffer liquid between the first chamber 111 and the second chamber 112 to drive the piston rod 12 to move relative to the cylinder barrel 11. The pump body 15 can be simply understood as a driving device for driving the flow of the buffer liquid. Here, taking the downward movement of the piston rod 12 (the wheel rises) as an example: when the pump body 15 works, the pump body 15 actively extracts the buffer liquid in the first chamber 111 and transports it to the second chamber 112. The different pressures in the two chambers cause the cylinder barrel 11 to drive the wheel to move upward (the piston rod 12 is fixed to the vehicle body, and here the piston rod 12 is regarded as a stationary state). Since the pump body 15 injects the buffer liquid into the second chamber 112 to increase the pressure in the second chamber 112, therefore, the buffer liquid in the second chamber 112 will push the bottom plate 144 upward, causing the corrugated pipe 142 to continue to compress and deform upward to absorb energy. At the same time, the gas volume of the accumulator 14 decreases, which can meet the requirement of the increased space occupied by the piston rod 12 in the shock absorption chamber. The setting of the pump body 15 enables the shock absorber assembly 1 to actively adjust the vehicle body posture according to the real-time running conditions of the vehicle, with higher flexibility.

[0045] According to an embodiment of the present utility model, the oil guiding channel 13 includes: a first oil path 131 and a second oil path 132. A first damping regulating valve 1311 is provided on the first oil path 131. The first oil path 131 communicates the first chamber 111 with the second chamber 112 and is adapted to introduce the buffer liquid in the first chamber 111 into the second chamber 112; a second damping regulating valve 1321 is provided on the second oil path 132. The second oil path 132 communicates the second chamber 112 with the first chamber 111 and is adapted to introduce the buffer liquid in the second chamber 112 into the first chamber 111; wherein, the first oil path 131 and the second oil path 132 are respectively conducted with the pump body 15.

[0046] The settings of the first oil path 131 and the second oil path 132 make the flow path of the buffer liquid between the first chamber 111 and the second chamber 112 independent. For example, check valves 101 can be respectively provided on the first oil path 131 and the second oil path 132. When the road surface excites the wheel to rise or fall, causing the piston rod 12 to move relative to the cylinder barrel 11, or when it is necessary to actively adjust the vehicle body posture, the buffer liquid between the first chamber 111 and the second chamber 112 can select the corresponding flow route according to the actual situation. For example: when the piston rod 12 moves downward relative to the cylinder barrel 11, the buffer liquid in the first chamber 111 enters the second chamber 112 through the first oil path 131; when the piston rod 12 moves upward relative to the cylinder barrel 11, the buffer liquid in the second chamber 112 enters the first chamber 111 through the second oil path 132. The first oil path 131 and the second oil path 132 are respectively communicated with the pump body 15, which can realize the active control of the flow of the buffer liquid in the two oil paths by the shock absorber assembly 1, facilitating the active adjustment of the vehicle body posture by the vehicle.

[0047] Meanwhile, the shock absorber assembly 1 achieves two-way damping adjustment by respectively arranging a first damping regulating valve 1311 and a second damping regulating valve 1321 in a first oil passage 131 and a second oil passage 132. The first oil passage 131 is equipped with the first damping regulating valve 1311 for controlling the flow of buffer fluid (such as oil) from the first chamber 111 to the second chamber 112, thereby adjusting the damping during the compression stroke of the accumulator 14; the second oil passage 132 is equipped with the second damping regulating valve 1321 for controlling the flow of buffer fluid from the second chamber 112 to the first chamber 111, thereby adjusting the damping during the stretching stroke of the accumulator 14. Such a design enables the shock absorber to flexibly adjust the damping force according to different driving conditions and requirements, better control the shock absorption effect of the shock absorber assembly 1, and improve the driving stability and comfort of the vehicle.

[0048] In some embodiments, a rebound buffer block 102 is further arranged at the top of the accumulator 14.

[0049] The vehicle according to the present invention will be briefly described below.

[0050] The vehicle according to the present invention includes the shock absorber assembly 1 in the above embodiments. Since the vehicle according to the present invention is provided with the shock absorber assembly 1 in the above embodiments, the shock absorber assembly 1 can actively or passively adjust the pressure in the shock absorption chamber according to the real-time driving state of the vehicle, achieve buffering and shock absorption of the vehicle, and ensure the driving stability of the vehicle. At the same time, the accumulator 14 is arranged in the shock absorption chamber, reducing the volume of the shock absorber assembly 1, and further reducing the occupied space of the shock absorber assembly 1 on the vehicle body, facilitating the arrangement of other structures of the vehicle body.

[0051] The present invention also relates to a shock absorption system for a vehicle. The shock absorption system includes the shock absorber assembly 1 in the above embodiments. The control method of the shock absorption system can be simply understood as follows: the driving signal of the vehicle is input (signal receiver); the shock absorption system determines whether the pump body 15 needs to work according to the signal (i.e., determines active adjustment or passive adjustment). If the pump body 15 does not need to work, the shock absorption system realizes the function of adjustable damping; if the pump body 15 needs to work, it determines the moving direction of the piston rod 12 relative to the cylinder barrel 11 (i.e., whether the vehicle body attitude needs to rise or fall); when the piston rod 12 moves downward relative to the cylinder barrel 11, the pump body 15 injects buffer fluid into the second chamber 112, and the first damping regulating valve 1311 is adjusted to the softest state (ensuring that the buffer fluid can quickly enter the second chamber 112); when the piston rod 12 moves upward relative to the cylinder barrel 11, the pump body 15 injects buffer fluid into the first chamber 111, and the second damping regulating valve 1321 is adjusted to the softest state (ensuring that the buffer fluid can quickly enter the first chamber 111); when the piston rod 12 reaches the specified height, the pump body 15 stops working.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0053] In the description of the present utility model, the "first feature" and "second feature" may include one or more of such features.

[0054] In the description of the present utility model, the meaning of "a plurality of" is two or more.

[0055] In the description of the present utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween.

[0056] In the description of the present utility model, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

[0058] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A shock absorber assembly, characterized in that, Comprising: A cylinder barrel (11) in which a damping chamber is formed; A piston rod (12) connected to the vehicle body and provided with a piston that moves within the damping chamber, the piston dividing the damping chamber into a first chamber (111) and a second chamber (112); An oil guiding passage (13) that is respectively communicated with the first chamber (111) and the second chamber (112) and is adapted to circulate a buffer fluid; An accumulator (14) deformably arranged within the first chamber (111) and / or the second chamber (112), the accumulator (14) being adapted to deform according to the pressure within the damping chamber.

2. The shock absorber assembly according to claim 1, wherein, The accumulator (14) is sleeved on at least a part of the outer periphery of the piston rod (12).

3. The shock absorber assembly according to claim 2, characterized in that, The accumulator (14) includes: A base portion (141) fixedly connected to the piston rod (12); A deformable portion connected to the base portion (141), the deformable portion being deformably arranged within the second chamber (112) and being adapted to deform according to the pressure within the damping chamber.

4. The shock absorber assembly according to claim 3, wherein, The deformable portion is configured as a bellows (142) that surrounds the piston rod (12) and is axially deformable on the piston rod (12), and a cavity is formed within the bellows (142).

5. The shock absorber assembly according to claim 4, characterized in that, The accumulator (14) further includes: an air filling device (143) arranged within the base portion (141), an air filling port communicated with the bellows (142) is provided on the air filling device (143), and the air filling device (143) can selectively inject air into the cavity of the bellows (142).

6. The shock absorber assembly according to claim 4, wherein, The accumulator (14) further includes: a bottom plate (144) surrounding the piston rod (12) and connected to the end of the bellows (142).

7. The shock absorber assembly according to claim 4, characterized in that, The accumulator (14) further includes: a gasket (145) arranged at one end of the piston facing the bellows (142) and spaced from the bellows (142).

8. The shock absorber assembly according to claim 1, characterized in that, Further comprising: A pump body (15) arranged within the oil guiding passage (13), the pump body (15) being adapted to drive the flow of the buffer fluid between the first chamber (111) and the second chamber (112) to drive the piston rod (12) to move relative to the cylinder barrel (11).

9. The shock absorber assembly according to claim 8, wherein, The oil guiding passage (13) includes: A first oil passage (131) provided with a first damping regulating valve (1311), the first oil passage (131) communicating the first chamber (111) with the second chamber (112) and being adapted to introduce the buffer fluid in the first chamber (111) into the second chamber (112); A second oil passage (132) provided with a second damping regulating valve (1321), the second oil passage (132) communicating the second chamber (112) with the first chamber (111) and being adapted to introduce the buffer fluid in the second chamber (112) into the first chamber (111); wherein The first oil passage (131) and the second oil passage (132) are respectively communicated with the pump body (15).

10. A vehicle, characterized in that, It includes the shock absorber assembly according to any one of claims 1-9.

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