Shock absorber of suspension system, suspension system and vehicle

Abstract

The utility model discloses a shock absorber of a suspension system, the suspension system and a vehicle, and the shock absorber of the suspension system comprises a shock absorption cylinder, a shock absorption rod and a connecting rod, and the piston rod assembly comprises a piston rod and a limiting piece, the piston rod penetrates through the damping cylinder, the limiting piece is located in the working cavity, the limiting piece is connected to the piston rod, and the height of the limiting piece relative to the piston rod is adjustable. Therefore, the height of the limiting piece relative to the piston rod is adjustable, so that the height of the limiting piece relative to the piston rod can be adjusted according to different driving working condition requirements of the vehicle, the jump-down stroke of the shock absorber and the jump-down stroke of the suspension system are adjusted, and the service life of the shock absorber is prolonged under the premise of ensuring that the vehicle has better passing performance in an off-road mode. Tyres can be prevented from being suspended, and the driving performance of a vehicle is guaranteed.

Description

Technical Field

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

[0002] With the development of the automobile industry, people are more demanding on the use conditions of vehicles, especially when driving on bad roads. In addition to the requirements for the comfort of the whole vehicle, there are also higher requirements for the vehicle's passing performance and driving ability under harsh conditions. The shock absorber assembly is an important component of the suspension system. Its function is to attenuate the vibration of the vehicle body and improve the handling and smoothness of the vehicle. Usually, by limiting the working stroke of the shock absorber, the downward jump stroke of the suspension system can be limited.

[0003] In the related art, the structural design of the shock absorber is not reasonable. When the vehicle needs to go off-road, the body posture is usually adjusted to improve the vehicle's passing performance. However, due to the limitation of the suspension travel, after the posture is adjusted to a certain extent, the wheel's downward jump travel is limited. When passing through some twisted roads or single-sided deep pits, the tire cannot touch the ground, so that a certain wheel cannot provide traction for the vehicle. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a shock absorber for a suspension system, the shock absorber for the suspension system has an adjustable lowering stroke, and has better passing performance and driving performance.

[0005] Another object of the present invention is to provide a suspension system.

[0006] Another object of the present invention is to provide a vehicle.

[0007] According to the shock absorber of the suspension system of the embodiment of the utility model, it includes: a shock absorber cylinder, which is provided with a working chamber; a piston rod assembly, which includes: a piston rod and a limit member, the piston rod passes through the shock absorber cylinder, the limit member is located in the working chamber, and the limit member is connected to the piston rod and is adjustable in height relative to the piston rod.

[0008] Therefore, by making the height of the limiter relative to the piston rod adjustable, the height of the limiter relative to the piston rod can be adjusted according to different driving conditions of the vehicle, thereby adjusting the downward jump stroke of the shock absorber and the downward jump stroke of the suspension system. In off-road mode, while ensuring that the vehicle has better passing performance, it is possible to avoid the tire being in a suspended state and ensure the vehicle's driving performance.

[0009] In some examples of the present invention, the limiting member includes: a fixed part and a movable part, the fixed part is fixedly connected to the piston rod, the movable part is movably connected to the fixed part, and the upper and lower heights of the movable part relative to the fixed part are adjustable.

[0010] In some examples of the present utility model, the fixed portion is sleeved on the piston rod and is provided with a first threaded portion, the movable portion is sleeved on the piston rod and is provided with a second threaded portion, and the first threaded portion and the second threaded portion are threadably matched.

[0011] In some examples of the present invention, the fixed part includes a connecting part and a base, the first threaded part is arranged on the circumferential outer side of the connecting part, the base is arranged below the connecting part and the outer diameter of the base is larger than the outer diameter of the connecting part, and the movable part cooperates with the base in upper and lower directions.

[0012] In some examples of the present invention, the shock absorber of the suspension system further includes: the piston rod assembly further includes: a base, the base is fixedly disposed on the piston rod, and the fixing portion is disposed on the base and has an interference fit with the base.

[0013] In some examples of the present invention, the shock absorber of the suspension system further includes: a controller, wherein the controller is electrically connected to the moving part to drive the moving part to move up and down relative to the fixed part.

[0014] In some examples of the utility model, the shock absorber of the suspension system also includes: a guide seat, the guide seat is arranged above the working chamber, the piston rod passes through the guide seat and is guided and matched with the guide seat, and the limit member is limited and matched with the guide seat.

[0015] In some examples of the utility model, the shock absorber of the suspension system also includes: an upper support assembly and a lower bushing, the upper support assembly is connected and fixed to the upper end of the piston rod assembly, the upper support assembly is suitable for being connected to a vehicle frame, the lower bushing is connected and fixed to the lower end of the shock absorber cylinder, and the lower bushing is suitable for being connected to a vehicle axle.

[0016] The suspension system according to the embodiment of the utility model includes: a shock absorber of the suspension system

[0017] A vehicle according to an embodiment of the utility model includes: a suspension system.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a control diagram of a vehicle according to an embodiment of the utility model;

[0021] Figure 2 is a schematic diagram of a suspension system according to an embodiment of the utility model;

[0022] Figure 3 is a schematic diagram of a shock absorber of a suspension system in a road mode according to an embodiment of the utility model;

[0023] Figure 4 is a cross-sectional view of a shock absorber of a suspension system according to an embodiment of the utility model along the AA direction;

[0024] Figure 5 is a schematic diagram of a shock absorber of a suspension system according to an embodiment of the utility model in a road mode from another perspective;

[0025] Figure 6 is a cross-sectional view of a shock absorber of a suspension system according to an embodiment of the utility model along the BB direction;

[0026] Figure 7 is a schematic diagram of a shock absorber of a suspension system according to an embodiment of the utility model in an off-road mode;

[0027] Figure 8 is a cross-sectional view of a shock absorber of a suspension system according to an embodiment of the utility model along the CC direction;

[0028] Fig. 9 is a schematic diagram of another perspective of a shock absorber of a suspension system in an off-road mode according to an embodiment of the utility model;

[0029] Fig.10 It is a cross-sectional view of the shock absorber of the suspension system according to the embodiment of the utility model along the DD direction.

[0030] Reference numerals:

[0031] 1000. Suspension system;

[0032] 100. Shock absorber;

[0033] 10. Vibration damping cylinder;

[0034] 11. Outer cylinder; 12. Inner cylinder; 13. Working chamber; 14. Oil storage chamber; 15. Bottom valve; 16. Guide seat; 17. Oil seal assembly; 18. Sealing retaining ring;

[0035] 20. Piston rod assembly;

[0036] 21. piston rod; 22. stopper; 221. fixing portion; 2211. connecting portion; 2212. base; 2213. first threaded portion; 222. moving portion; 2221. second threaded portion; 23. base; 24. solenoid valve; 25. basic valve;

[0037] 30. Upper support assembly; 40. Lower bushing; 50. Buffer body; 60. Dust cover;

[0038] 200, frame; 300, guide; 400, traction arm; 500, brake; 600, control arm; 700, upper control arm; 800, air spring; 900, lower control arm. DETAILED DESCRIPTION

[0039] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0040] Reference below Figure 1-Figure 10 The shock absorber 100 of the suspension system 1000 according to the embodiment of the present invention is described. The shock absorber 100 of the suspension system 1000 may be applied to the suspension system 1000 , and the suspension system 1000 may be applied to a vehicle.

[0041] Combination Figure 1-Figure 10 As shown, the shock absorber 100 of the suspension system 1000 according to the utility model can mainly include: a shock absorber cylinder 10 and a piston rod assembly 20, the shock absorber cylinder 10 is provided with a working chamber 13, the piston rod assembly 20 can mainly include: a piston rod 21 and a limit member 22, the piston rod 21 passes through the shock absorber cylinder 10, the limit member 22 is located in the working chamber 13, the limit member 22 is connected to the piston rod 21 and the height relative to the piston rod 21 is adjustable.

[0042] Specifically, when the wheels encounter a road depression or are subjected to a vertical impact during vehicle driving, the suspension system 1000 is compressed and the wheels move downward, and this process is called "jumping down".

[0043] It is understandable that the suspension system 1000 can adjust the distance that the wheel moves downward by jumping down when encountering a large pothole or heavy load, so as to ensure that the vehicle can better maintain the contact between the tire and the ground under complex road conditions, thereby maintaining control stability and traction. Among them, the maximum distance that the wheel moves downward is: the jumping travel of the suspension system 1000.

[0044] Furthermore, the shock absorber 100, as an important component in the suspension system 1000, works in coordination with the elastic element to jointly assume the tasks of supporting the vehicle body, reducing vibration, and maintaining vehicle stability. When the shock absorber 100 is working, the piston rod 21 can move up and down in the working chamber 13, cooperating with the valve system in the shock absorber 100 to ensure the normal operation of the shock absorbing valve 100. When the vehicle jumps down, the piston rod 21 moves upward relative to the shock absorber cylinder 10. Among them, the maximum distance that the piston rod 21 can move upward relative to the shock absorber cylinder 10 is: the downward jump stroke of the shock absorber 100. After knowing the downward jump stroke of the shock absorber 100, the downward jump stroke of the suspension system 1000 can be obtained by converting the lever ratio.

[0045] By setting a limit member 22 on the piston rod 21, the limit member 22 is set in the working chamber 13, so that when the shock absorber 100 jumps downward, the limit member 22 can move upward with the piston rod 21, and the limit member 22 can cooperate with the guide seat 16 set on the shock absorber cylinder 10 to limit the downward jump stroke of the shock absorber 100, and further limit the downward jump stroke of the suspension system 1000.

[0046] For the adjustable suspension system 1000, when the vehicle needs to go off-road, the body posture is usually adjusted to improve the vehicle's passing performance. However, since the raising of the body posture will simultaneously drive the piston rod 21 to move upward relative to the shock absorber cylinder 10, the downward jump stroke of the shock absorber 100 becomes smaller, and the downward jump stroke of the suspension system 1000 becomes smaller, that is, limited by the suspension stroke, after the posture is raised to a certain extent, the downward jump stroke of the wheel is limited. When passing through some twisted roads or single-sided deep pits and other working conditions, the tire cannot touch the ground, so that a certain wheel cannot provide traction for the vehicle.

[0047] By connecting the stopper 22 to the piston rod 21, the height of the stopper 22 relative to the piston rod 21 is adjustable, so that the height of the stopper 22 relative to the piston rod 21 can be adjusted according to different driving conditions of the vehicle, thereby adjusting the downward jump stroke of the shock absorber 100 and the downward jump stroke of the suspension system 1000. The stopper 22 can be directly connected to the piston rod 21 or connected to the piston rod 21 through an intermediate component, which is not specifically limited here.

[0048] Specifically, when the vehicle is traveling on a highway with normal good road conditions, there is no need to raise the body posture, and the body posture may even be lowered in pursuit of handling performance. At this time, the shock absorber 100 is in the highway mode, and the limit member 22 is in the calibrated state of the highway mode, meeting the normal driving requirements.

[0049] When the vehicle is driving in an off-road condition with a relatively bad road condition, the vehicle seeks to pass through the bad condition, switches to the off-road mode, and raises the body posture. When the vehicle motion controller receives the command to switch to the off-road mode and raise the body posture, it controls the limiter 22 to synchronously lower the corresponding height of the body posture, and increases the downward jump stroke of the shock absorber 100, so as to make up for the problem that the downward jump stroke of the suspension system 1000 is relatively reduced after the body posture is raised, so as to ensure that in the off-road mode, when the body posture is raised, the suspension system 1000 still has the downward jump stroke in the road mode, so as to avoid the tire being in a suspended state, resulting in a certain wheel being unable to provide traction.

[0050] In addition, this can also optimize the extreme impact frequency of the shock absorber 100 when the suspension system 100 jumps down with a large stroke, reduce the extreme stroke impact of the shock absorber 100, and also have a qualitative improvement in increasing the service life of the shock absorber 100 and avoiding abnormal impact noise and oil leakage of the shock absorber 100.

[0051] It should be noted that even with a non-adjustable suspension system 1000, the height of the limiter 22 on the piston rod 21 can be adjusted to increase the downward travel of the shock absorber 100 and the downward travel of the suspension system 1000, thereby meeting a larger downward travel design.

[0052] Therefore, by making the height of the limit member 22 relative to the piston rod 21 adjustable, the height of the limit member 22 relative to the piston rod 21 can be adjusted according to different driving conditions of the vehicle, thereby adjusting the downward jump stroke of the shock absorber 100 and the downward jump stroke of the suspension system 1000. In the off-road mode, while ensuring that the vehicle has better passing performance, it is possible to avoid the tire being in a suspended state and ensure the vehicle's driving performance.

[0053] Combination Figure 5 , Figure 6 as well as Fig. 9 and Fig.10 As shown, the limiting member 22 may mainly include: a fixed portion 221 and a movable portion 222 , wherein the fixed portion 221 is fixedly connected to the piston rod 21 , and the movable portion 222 is movably connected to the fixed portion 221 , and the upper and lower heights of the movable portion 222 relative to the fixed portion 221 are adjustable.

[0054] Specifically, by making the fixed part 221 fixedly connected to the piston rod 21, and then movably connecting the movable part 222 to the fixed part 221, the upper and lower heights of the movable part 222 relative to the fixed part 221 can be adjusted, that is, the height of the limiter 22 relative to the piston rod 21 can be adjusted, which can make the structure of the limiter 22 simpler, and make the adjustment of the height of the limiter 22 relative to the piston rod 21 simpler and more convenient. It should be noted that the fixed part 221 can be directly fixedly connected to the piston rod 21, or fixedly connected to the piston rod 21 through an intermediate component, which is not specifically limited here.

[0055] Among them, when the body posture rises, the moving part 222 can be controlled to synchronously drop the corresponding height of the body posture, to compensate for the problem that the downward jump stroke of the suspension system 1000 is relatively reduced after the body posture rises, to increase the downward jump stroke of the suspension system 1000 in the off-road mode, and to improve the reliability of the vehicle.

[0056] In a specific embodiment of the present invention, the limiting member 22 is a limiting ring, and the moving portion 222 and the fixed portion 221 of the limiting ring are both sleeved on the piston rod 21. This can make the force distribution of the piston rod 21 in the circumferential direction more uniform, avoiding more force on one side, thereby improving the working performance of the shock absorber 100.

[0057] Furthermore, combined with Figure 5 , Figure 6 as well as Fig. 9 and Fig.10 As shown, one of the fixed part 221 and the movable part 222 is at least partially sleeved on the outer periphery of the other, which can also make the two more stably connected. Among them, the fixed part 221 is sleeved on the piston rod 21 and is provided with a first threaded part 2213, and the movable part 222 is sleeved on the piston rod 21 and is provided with a second threaded part 2221, and the first threaded part 2213 and the second threaded part 2221 are threadedly matched. With such a configuration, the upper and lower heights of the movable part 222 relative to the fixed part 221 can be adjusted by only screwing the movable part 222 upward or downward relative to the fixed part 221, which not only makes the upper and lower heights of the movable part 222 relative to the fixed part 221 easier and more convenient to adjust, but also makes the position of the movable part 222 relative to the fixed part 221 more stable and reliable.

[0058] In some embodiments of the present invention, Figure 3-Figure 10 As shown, the movable portion 222 is sleeved on the outer circumference of the fixed portion 221, a first threaded portion 2213 is provided on the circumferential outer side of the fixed portion 221, and a second threaded portion 2221 is provided on the circumferential inner side of the movable portion 222, and the first threaded portion 2213 and the second threaded portion 2221 are threadedly matched.

[0059] Furthermore, the fixed part 221 can mainly include a connecting part 2211 and a base 2212, the first threaded part 2213 is arranged on the circumferential outer side of the connecting part 2211, the base 2212 is arranged below the connecting part 2211 and the outer diameter of the base 2212 is larger than the outer diameter of the connecting part 2211, and the movable part 222 cooperates with the base 2212 in upper and lower directions.

[0060] With such an arrangement, while ensuring that the movable part 222 can move up and down relative to the connecting part 2211, thereby adjusting the downward jump stroke of the shock absorber 100 and even the suspension system 1000, the base 2212 can abut and limit the movable part 222 in the up and down directions, thereby limiting the downward movement range of the movable part 222 relative to the connecting part 2211, and making the up and down movement range of the limit member 22 relative to the piston rod 21 set within a reasonable range, thereby further improving the reliability of the shock absorber 100.

[0061] Combination Figure 5 , Figure 6 as well as Fig. 9 and Fig.10 As shown, the piston rod assembly 20 may further include: a base 23 , the base 23 is fixedly disposed on the piston rod 21 , and the fixing portion 221 is disposed on the base 23 and is interference fit with the base 23 .

[0062] Specifically, the base 23 is fixedly arranged on the piston rod 21, for example, the base 23 can be welded to the piston rod 21, the base 23 is a sleeve structure, and an accommodating cavity is arranged inside, and the fixing part 221 is arranged in the accommodating cavity of the base 23, and the fixing part 221 and the base 23 are interference-fitted in the circumferential direction, so that the fixing part 221 can be easily fixed on the piston rod 21, and the stability and reliability of the setting of the fixing part 221 on the piston rod 21 can be ensured. It should be noted that the base 23, the fixing part 221 and the movable part 222 can all be sleeved on the outer circumference of the piston rod 21.

[0063] In other embodiments of the utility model, the base 23 may not be provided, and the fixing portion 221 may be directly fixed on the piston rod 21 . For example, the fixing portion 221 may be welded to the piston rod 21 to achieve a fixed connection between the fixing portion 221 and the piston rod 21 .

[0064] Combination Figure 5 , Figure 6 as well as Fig. 9 and Fig.10As shown, the shock absorber 100 of the suspension system 1000 may further include: a controller, the controller being electrically connected to the moving part 222 to drive the moving part 222 to move up and down relative to the fixed part 221. Specifically, by electrically connecting the controller to the moving part 222, the controller can control the moving part 222 to rise or fall relative to the fixed part 221, thereby making the shock absorber 100 of the suspension system 1000 more intelligent and controllable, and improving the reliability of the shock absorber 100 of the suspension system 1000.

[0065] Furthermore, combined with Figure 1 As shown, the vehicle is provided with a whole vehicle motion controller. When the suspension system is applied to the vehicle, four suspension systems can be provided, and each suspension system corresponds to one wheel. Specifically, each suspension system may include at least: a shock absorber and an air spring. The left front wheel corresponds to the left front shock absorber and the left front air spring, the right front wheel corresponds to the right front shock absorber and the right front air spring, the left rear wheel corresponds to the left rear shock absorber and the left rear air spring, and the right rear wheel corresponds to the right rear shock absorber and the right rear air spring. The left front shock absorber, the right front shock absorber, the left rear shock absorber and the right rear shock absorber are all electrically connected to the whole vehicle motion controller.

[0066] In the present application, the controller can be electrically connected to the whole vehicle motion controller, so that the whole vehicle motion controller can control the mobile part 222 to rise or fall relative to the fixed part 221 according to the driving state of the vehicle, thereby making the shock absorber 100 of the suspension system 1000 more intelligent and controllable. Of course, the whole vehicle motion controller can also be set as the shock absorber 100 controller, that is, the mobile part 222 is directly electrically connected to the whole vehicle motion controller, which is not specifically limited here.

[0067] Combination Figure 5 , Figure 6 as well as Fig. 9 and Fig.10 As shown, the shock absorber 100 of the suspension system 1000 may further include: a guide seat 16, the guide seat 16 is arranged above the working chamber 13, the piston rod 21 passes through the guide seat 16 and is guided and matched with the guide seat 16, and the limit member 22 is limited and matched with the guide seat 16.

[0068] Specifically, by arranging the guide seat 16 above the working chamber 13, the piston rod 21 passes through the guide seat 16, so that the guide seat 16 can limit the radial direction of the piston rod 21 and cooperate with the piston rod 21 in the upward and downward directions, thereby guiding the piston rod 21 and preventing the piston rod 21 from shaking during movement, thereby improving the reliability of the shock absorber 100.

[0069] Furthermore, considering that the limit member 22 is arranged in the working chamber 13, during the up and down movement of the piston rod 21, the guide seat 16 can cooperate with the limit member 22 to limit the extreme position of the piston rod 21, thereby limiting the downward jump stroke of the shock absorber 100.

[0070] In addition, an oil seal assembly 17 and a sealing retaining ring 18 are also provided at the upper end of the shock-absorbing cylinder 10, and the piston rod 21 is also penetrated by the oil seal assembly 17 and the sealing retaining ring 18, and the oil seal assembly 17 and the sealing retaining ring 18 can play a sealing role.

[0071] Combination Figure 3-Figure 10 As shown, the shock absorber 100 of the suspension system 1000 may further include: an upper support assembly 30, the upper support assembly 30 is connected and fixed to the upper end of the piston rod assembly 20, and the upper support assembly 30 is suitable for connecting to the vehicle frame. Specifically, by connecting the upper support assembly 30 to the upper end of the piston rod assembly 20, the upper support assembly 30 can move synchronously with the piston rod assembly 20, and by connecting the upper support assembly 30 to the vehicle frame, the movement of the vehicle frame can be transmitted to the piston rod assembly 20 through the upper support assembly 30, so that the vehicle frame can drive the piston rod assembly 20 to move.

[0072] Combination Figure 3-Figure 10 As shown, the shock absorber 100 of the suspension system 1000 may further include: a lower bushing 40, the lower bushing 40 is connected and fixed to the shock absorber cylinder 10, and the lower bushing 40 is suitable for connecting to the vehicle axle. Specifically, by connecting the lower bushing 40 to the lower end of the shock absorber cylinder 10, the lower bushing 40 can move synchronously with the shock absorber cylinder 10, and by connecting the lower bushing 40 to the vehicle axle, the movement of the vehicle axle can be transmitted to the shock absorber cylinder 10 through the lower bushing 40, so that the vehicle axle can drive the shock absorber cylinder 10 to move.

[0073] In this way, through the arrangement of the upper support assembly 30 and the lower bushing 40, the upper and lower ends of the shock absorber 100 can be connected to the frame and the axle respectively. When the road surface is uneven, the axle and the frame move up and down relative to each other, thereby driving the piston rod assembly 20 to move up and down relative to the shock absorber cylinder 10. The piston rod assembly 20 compresses the damping medium in the working chamber 13, thereby generating a damping force to attenuate the vibration caused by the spring.

[0074] Combination Figure 3-Figure 10As shown, the shock absorber cylinder 10 may include an inner cylinder 12 and an outer cylinder 11, the outer cylinder 11 is arranged on the outside of the inner cylinder 12, an oil storage chamber 14 is formed between the inner cylinder 12 and the outer cylinder 11, a working chamber 13 is formed in the inner cylinder 12, and a bottom valve 15 is arranged at the bottom of the inner cylinder 12. The shock absorber 100 may also include: a buffer body 50 and a dust cover 60, the lower cup seat of the upper support assembly 30 and the buffer body 50 are interference fit, and the dust cover 60 is tightened between the two. In this way, the shock absorber 100 can be made into a double-tube shock absorber 100 to ensure the normal operation of the shock absorber 100. In addition, the piston rod 21 is provided with an electromagnetic valve 24 and a basic valve 25. By passing the piston rod 21 through the shock absorber cylinder 10, the electromagnetic valve 24 and the basic valve 25 are both arranged in the working chamber 13, so that the electromagnetic valve 24 and the basic valve 25 can move with the movement of the piston rod 21, thereby ensuring the normal operation of the shock absorber 100.

[0075] Combination Figure 2 As shown, the suspension system 1000 according to the utility model can mainly include: the shock absorber 100 of the suspension system 1000 mentioned above. Specifically, by applying the shock absorber 100 to the suspension system 1000, the downward jump stroke of the suspension system 1000 can be adjusted, and the limit impact frequency of the shock absorber 100 when the suspension system 1000 jumps downward with a large stroke can be optimized, which not only improves the comfort of the whole vehicle, but also reduces the limit stroke impact of the shock absorber 100, thereby effectively improving the service life of the shock absorber 100 and effectively avoiding abnormal impact noise and oil leakage of the shock absorber 100.

[0076] In a specific embodiment of the present invention, the suspension system 1000 may be a five-link suspension system 1000. The five-link suspension system 1000 mainly includes: a vehicle frame, a guide 300, a traction arm 400, a brake 500, a shock absorber 100, a control arm 600, an upper swing arm 700, an air spring 800, a lower swing arm 900 and other main components, which will not be described in detail here.

[0077] The vehicle according to the utility model may mainly include: the above-mentioned suspension system 1000. Specifically, by applying the suspension system 1000 to the vehicle, the vehicle can adjust the downward jump travel of the suspension system 1000 according to different driving conditions, and the comfort of the vehicle can be improved while ensuring that the vehicle has better passing performance, thereby improving the user experience and enhancing the product competitiveness of the vehicle.

[0078] In the chassis adjustment stage, the relative positions of the limiter 22 and the piston rod 21 may also be matched and adjusted to meet the downward travel adjustment requirements of the suspension system 1000 of different vehicles.

[0079] 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 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 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 invention.

[0080] 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0081] 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 spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber for a suspension system, characterized in that: include: A vibration damping cylinder (10), wherein the vibration damping cylinder (10) is provided with a working chamber (13); A piston rod assembly (20), the piston rod assembly (20) comprising: a piston rod (21) and a limiter (22), the piston rod (21) passing through the damping cylinder (10), the limiter (22) being located in the working chamber (13), the limiter (22) being connected to the piston rod (21) and being adjustable in height relative to the piston rod (21).

2. The shock absorber of the suspension system according to claim 1, characterized in that: The limiting member (22) comprises: a fixed portion (221) and a movable portion (222); the fixed portion (221) is fixedly connected to the piston rod (21); the movable portion (222) is movably connected to the fixed portion (221); and the upper and lower heights of the movable portion (222) relative to the fixed portion (221) are adjustable.

3. The shock absorber of the suspension system according to claim 2, characterized in that: The fixed portion (221) is sleeved on the piston rod (21) and is provided with a first threaded portion (2213); the movable portion (222) is sleeved on the piston rod (21) and is provided with a second threaded portion (2221); the first threaded portion (2213) and the second threaded portion (2221) are threadably matched.

4. The shock absorber of the suspension system according to claim 3, characterized in that: The fixed portion (221) comprises a connecting portion (2211) and a base (2212), the first threaded portion (2213) is arranged on the circumferential outer side of the connecting portion (2211), the base (2212) is arranged below the connecting portion (2211) and the outer diameter of the base (2212) is larger than the outer diameter of the connecting portion (2211), and the movable portion (222) cooperates with the base (2212) in upper and lower direction limit positions.

5. The shock absorber of the suspension system according to claim 2, characterized in that: The piston rod assembly (20) further comprises: a base (23), wherein the base (23) is fixedly disposed on the piston rod (21), and the fixing portion (221) is disposed on the base (23) and is interference fit with the base (23).

6. The shock absorber of the suspension system according to claim 2, characterized in that: Also includes: A controller is electrically connected to the moving part (222) to drive the moving part (222) to move up and down relative to the fixed part (221).

7. The shock absorber of the suspension system according to claim 1, characterized in that: Also includes: A guide seat (16), wherein the guide seat (16) is arranged above the working chamber (13), the piston rod (21) passes through the guide seat (16) and is guided and matched with the guide seat (16), and the limiting member (22) is limited and matched with the guide seat (16).

8. The shock absorber of the suspension system according to claim 1, characterized in that: Also includes: An upper support assembly (30) and a lower bushing (40), wherein the upper support assembly (30) is connected and fixed to the upper end of the piston rod assembly (20), and the upper support assembly (30) is suitable for being connected to a vehicle frame (200), and the lower bushing (40) is connected and fixed to the lower end of the shock absorber cylinder (10), and the lower bushing (40) is suitable for being connected to a vehicle axle.

9. A suspension system, characterized in that: include: A shock absorber (100) for a suspension system (1000) as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The suspension system (1000) of claim 9.

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