Suspension system of vehicle and vehicle

Abstract

A suspension system of a vehicle and a vehicle. The suspension system of a vehicle comprises a vehicle-body-height adjustment device and a damper. The vehicle-body-height adjustment device comprises a first fitting member and a second fitting member, which move relative to each other, the first fitting member being suitable for being mounted on a vehicle body; the damper comprises a third fitting member and a fourth fitting member, which move relative to each other, the third fitting member being suitable for being mounted on a wheel; the vehicle-body-height adjustment device and the damper are arranged in sequence; and the second fitting member and the fourth fitting member are connected to each other and can move relative to each other.

Description

The vehicle's suspension system and vehicle

[0001] This application claims priority to Chinese patent application No. 202410519965.5, filed on April 26, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This disclosure relates to the field of vehicle technology, and more particularly to a vehicle suspension system and a vehicle. Background Technology

[0003] In recent years, a suspension system for vehicles has been rapidly developed. The purpose of the suspension system is to provide a suspension for the vehicle that resists dive, sag and sway, and provides a comfortable ride for the user by keeping the pressure on all wheels as equal as possible. Summary of the Invention

[0004] This disclosure aims to at least address one of the technical problems existing in the related art. To this end, this disclosure proposes a vehicle suspension system that, by allowing relative movement between a fourth mating member and a second mating member, can buffer collisions between the fourth mating member and the second mating member, reducing the force on the second mating member, thereby reducing the collision force between the second mating member and the first mating member, preventing damage to the first and second mating members due to excessive collision forces, facilitating the improvement of the service life of the first and second mating members, and thus improving the service life of the suspension system.

[0005] This disclosure also proposes a vehicle having the aforementioned suspension system.

[0006] A vehicle suspension system according to a first aspect of this disclosure includes a vehicle height adjustment device and a damper. The vehicle height adjustment device includes a first mating member and a second mating member that are movable relative to each other in a first direction, the first mating member being adapted to be mounted to a vehicle body. The damper includes a third mating member and a fourth mating member that are movable relative to each other in the first direction, the third mating member being adapted to be mounted to a wheel. The vehicle height adjustment device and the damper are arranged sequentially in the first direction, and the second and fourth mating members are connected and movable relative to each other.

[0007] According to some embodiments of the present disclosure, the vehicle suspension system allows the fourth mating member and the second mating member to move relative to each other, thereby buffering the collision between the fourth mating member and the second mating member, reducing the force on the second mating member, and thus reducing the collision force between the second mating member and the first mating member. This prevents the first and second mating members from being damaged due to excessive collision force between them, thereby improving the service life of the first and second mating members and thus improving the service life of the suspension system.

[0008] In addition, the suspension system of the vehicle according to the above embodiments of this disclosure may also have the following additional technical features:

[0009] According to some embodiments of this disclosure, the first mating member includes a driving member and a rotating member, the driving member drives the rotating member to rotate, and the rotating member cooperates with the second mating member to cause the second mating member to reciprocate.

[0010] In some fundamentally disclosed embodiments, the driving member is configured as a motor, the rotating member is configured as a mating nut, and the second mating member is configured as a lead screw structure; the motor includes a rotor, and the rotating member is fixed to the rotor; or, the rotating member is integrally formed with the rotor; the mating nut engages with the lead screw structure to move the lead screw structure along the first direction.

[0011] According to some embodiments of this disclosure, the second mating member and the fourth mating member are connected by a buffer assembly, the buffer assembly being configured such that the second mating member and the fourth mating member are movable relative to each other.

[0012] According to some embodiments of this disclosure, the suspension system for a vehicle further includes an outer cover, which is mounted to at least one of the vehicle height adjustment device or the damper, and the buffer assembly is located inside the outer cover.

[0013] According to some embodiments of this disclosure, the buffer assembly slides in contact with the inner peripheral wall of the outer cover.

[0014] According to some embodiments of this disclosure, the first mating member includes a housing and a rotating member, the housing defining a receiving cavity, and the rotating member disposed within the receiving cavity; the housing has an opening on the side facing the damper, and the second mating member is adapted to mate with the rotating member through the opening.

[0015] According to some embodiments of this disclosure, the suspension system further includes an outer cover, the buffer assembly is located inside the outer cover, a first end of the housing is connected to the vehicle body, and a second end of the housing is connected to the outer cover; the housing and the outer cover are integrally formed or separately formed.

[0016] According to some embodiments of this disclosure, the suspension system further includes a first elastic element disposed within the outer cover, and the first elastic element is connected to both the buffer assembly and the outer cover.

[0017] In some embodiments, the bottom of the outer cover is provided with a sealing member, the sealing member is disposed on the damper, the fourth mating member extends through the sealing member into the outer cover, and the first elastic member is connected to the buffer assembly and the sealing member respectively.

[0018] In some embodiments, the vehicle's suspension system further includes a dust cover that covers the sealing member and is connected to an end of the cover and the damper, respectively.

[0019] According to some embodiments of this disclosure, the suspension system for a vehicle further includes a second elastic element, which is covered by the outer cover, and the second elastic element is connected to the vehicle height adjustment device and the damper, respectively.

[0020] According to some embodiments of this disclosure, the buffer assembly includes: a first connector, a second connector, and a first buffer, wherein the first connector is disposed on the second mating member; the second connector is disposed on the fourth mating member, and the first connector and the second connector mate with each other; and the first buffer is disposed between the first connector and the second connector.

[0021] According to some embodiments of this disclosure, the first connector and the second connector are in a sliding fit.

[0022] According to some embodiments of this disclosure, the buffer assembly further includes a mating end cap connected to the first connector to form a sliding chamber for the second connector to slide in.

[0023] According to some embodiments of this disclosure, a second buffer is provided between the second connector and the mating end cap.

[0024] According to some embodiments of this disclosure, the buffer assembly further includes an annular extension, the mating end cap being connected to the first connector via the extension to define a sliding chamber, the extension being connected to one of the mating end cap and the first connector, or the extension being integral with one of the mating end cap and the first connector.

[0025] According to some embodiments of this disclosure, the first connector includes a first fixing member and a first outer sleeve. The first fixing member is fixed to the end of the second mating member, and the outer peripheral wall of the first fixing member extends beyond the outer peripheral wall of the second mating member. The extension portion and the first outer sleeve cooperate. The second connector is fixed to the end of the fourth mating member, and the outer peripheral wall of the second connector extends beyond the outer peripheral wall of the fourth mating member. The first fixing member and the second connector are movable relative to each other.

[0026] In some embodiments, the first outer sleeve includes a protruding mating portion that protrudes toward the second connector; the extension sleeve is fitted onto the protruding mating portion.

[0027] According to some embodiments of this disclosure, the first buffer abuts against the first connector and the second connector respectively; or, the first buffer abuts against the first connector and the fourth mating member.

[0028] In some embodiments, the first buffer is at least one of a buffer material layer, a spring, or a metal spring.

[0029] According to some embodiments of this disclosure, the buffer assembly includes: a buffer groove; and an extension portion that extends into the buffer groove and moves in conjunction with the buffer groove.

[0030] In some embodiments of this disclosure, one of the buffer groove and the extension portion is located in the second mating member, and the other of the buffer groove and the extension portion is located in the fourth mating member; the extension portion and the buffer groove are sealed together.

[0031] According to some embodiments of this disclosure, the buffer assembly further includes a mating end cap connected to a first connecting member disposed on the second mating member; the end of the fourth mating member is provided with a second connecting member; the buffer assembly further includes a third buffer member located between the second connecting member and the mating end cap.

[0032] According to some embodiments of this disclosure, the suspension system for a vehicle further includes a sealing ring that is fitted over the extension portion.

[0033] A vehicle is provided according to a second aspect of the present disclosure, the vehicle including a suspension system according to a first aspect of the present disclosure.

[0034] According to some embodiments of the present disclosure, by utilizing the suspension system described in the first aspect of the present disclosure, by enabling the fourth mating member and the second mating member to be relatively movable, the collision between the fourth mating member and the second mating member can be buffered, the force on the second mating member can be reduced, and the collision force between the second mating member and the first mating member can be reduced, avoiding damage to the first and second mating members due to excessive collision force between them, thus facilitating the improvement of the service life of the first and second mating members, and thereby improving the service life of the suspension system.

[0035] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0036] At least one of the above or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0037] Figure 1 is a structural diagram of a suspension system in one direction according to some embodiments.

[0038] Figure 2 is a structural diagram of a suspension system according to some embodiments in another direction.

[0039] Figure 3 is a structural diagram of a suspension system according to some embodiments.

[0040] Figure 4 is a cross-sectional view of a suspension system according to some embodiments.

[0041] Figure 5 is an enlarged view of circle A in Figure 4.

[0042] Figure 6 is a cross-sectional view of another suspension system according to some embodiments.

[0043] Figure 7 is an enlarged view of circle B in Figure 6.

[0044] Figure 8 is a cross-sectional view of another suspension system according to some embodiments.

[0045] Figure 9 is an enlarged view of circle C in Figure 8.

[0046] Figure 10 is an exploded view of the second mating member, the fourth mating member, and the buffer assembly according to some embodiments.

[0047] Figure 11 is a structural diagram of a first connector according to some embodiments.

[0048] Figure 12 is a structural diagram of the second mating component according to some embodiments.

[0049] Figure 13 is a block diagram of a vehicle according to some embodiments.

[0050] Reference numerals: vehicle height adjustment device 10, first mating part 11, driving part 111, rotating part 112, housing 113, second mating part 12, plug-in part 121, second threaded groove 122, stator 111a, rotor 111b, damper 20, third mating part 21, fourth mating part 22, buffer groove 221, sliding chamber 301, first connecting part 31, protruding mating part 311, extending part 313, extension part 322, guide protrusion 315, first fixing part 316, first outer sleeve 317, anti-rotation hole 318, mating hole 319, second connecting part 223, mating end cover 32, stop protrusion 323, first buffer part 33, second buffer part 34, third buffer part 35, sealing ring 37, outer cover part 41, sealing part 42, first bearing 43, second bearing 44, first elastic part 61, second elastic part 62, dust cover 63. Detailed Implementation

[0051] The embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this disclosure, and should not be construed as limiting this disclosure.

[0052] The suspension system of a vehicle in the related technology includes a motor, ball nuts, and moving parts. When the wheels bounce up and down, causing the moving parts to bounce at high frequency and small amplitude, the wheels will exert a large impact force on the ball nuts and motor, which can easily lead to damage to the motor and ball nuts or reduce the service life of the shock absorber.

[0053] Therefore, this disclosure provides a vehicle suspension system according to some embodiments. The vehicle suspension system according to some embodiments of this disclosure is described below with reference to the accompanying drawings.

[0054] As shown in Figure 4, the suspension system of a vehicle according to some embodiments of the present disclosure includes a vehicle height adjustment device 10 and a damper 20.

[0055] As shown in Figures 1 to 4, the vehicle height adjustment device 10 includes a first mating member 11 and a second mating member 12 that move relative to each other in a first direction. The first mating member 11 is adapted to be installed on the vehicle body. The damper 20 includes a third mating member 21 and a fourth mating member 22 that move relative to each other in the first direction. The third mating member 21 is adapted to be installed on a wheel. In the first direction, the vehicle height adjustment device 10 and the damper 20 are arranged in sequence. The second mating member 12 and the fourth mating member 22 are connected and can move relative to each other. Before the second mating member 12 and the fourth mating member 22 move towards each other and collide, the movement of the second mating member 12 or the fourth mating member 22 can be buffered by air, thereby reducing the collision force when the second mating member 12 and the fourth mating member 22 collide.

[0056] In some embodiments, the first direction can refer to the up and down direction in FIG4.

[0057] In some embodiments, when the wheel bounces up or down due to road surface excitation, the vibration at the wheel is transmitted to the third mating member 21 and the fourth mating member 22. When the fourth mating member 22 vibrates, it causes a collision between the fourth mating member 22 and the second mating member 12, allowing the second mating member 12 and the fourth mating member 22 to move relative to each other. This movement of the fourth mating member 22 is buffered by air before the collision, thereby buffering the force between the second mating member 12 and the fourth mating member 22, reducing the force on the second mating member 12, and thus reducing the force transmitted from the second mating member 12 to the first mating member 11. This reduces the collision force between the second mating member 12 and the first mating member 11, preventing damage to the first mating member 11 and the second mating member 12 due to excessive collision force, thus improving the service life of the first mating member 11 and the second mating member 12, and consequently improving the service life of the suspension system.

[0058] Here, when the wheel bounces up or down, the third mating component 21 moves relative to the second mating component 12 and the fourth mating component 22. At this time, the distance between the third mating component 21 and the first mating component 11 changes, adjusting the distance between the wheel and the vehicle body. This allows the distance between the vehicle body and the wheel to be adjusted as needed; for example, the distance between the vehicle body and the wheel can be shortened when the wheel bounces up, and increased when the wheel bounces down. This helps absorb the impact of uneven road surfaces when the vehicle travels over them, reducing the amplitude of vibrations caused by the wheels and thus ensuring smooth vehicle operation and improving the comfort of passengers.

[0059] Therefore, the vehicle suspension system according to some embodiments of this disclosure, by allowing the fourth mating member 22 and the second mating member 12 to move relative to each other, can buffer the collision between the fourth mating member 22 and the second mating member 12, reduce the force on the second mating member 12, thereby reducing the collision force between the second mating member 12 and the first mating member 11, preventing the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force between them, thus improving the service life of the first mating member 11 and the second mating member 12, and thus improving the service life of the suspension system.

[0060] The suspension system according to an embodiment of the present disclosure is described below with reference to the accompanying drawings.

[0061] In some embodiments of this disclosure, as shown in FIG4, the suspension system includes a vehicle height adjustment device 10 and a damper 20.

[0062] In some embodiments of this disclosure, as shown in FIG4, the first mating member 11 includes a driving member 111 and a rotating member 112. The driving member 111 drives the rotating member 112 to rotate. The rotating member 112 cooperates with the second mating member 12 to make the second mating member 12 reciprocate. Since the second mating member 12 is connected to the fourth mating member 22 and can move relative to it, when the second mating member 12 moves relative to the first mating member 11, the second mating member 12 drives the fourth mating member 22 to move relative to the first mating member 11. When the fourth mating member 22 moves, it moves relative to the third mating member 21 and exerts a force on the third mating member 21, so as to use the third mating member 21 to output damping force to the wheel, thereby buffering the vibration of the wheel and reducing the vibration transmitted to the vehicle body, so as to improve the comfort of the driver and passengers.

[0063] In some embodiments, when the drive member 111 drives the rotating member 112 to rotate, or when the drive member 111 drives the rotating member 112 to have a rotational tendency, the drive member 111 applies a force to the second mating member 12 through the rotating member 112, so that the second mating member 12 applies a force to the third mating member 21 through the fourth mating member 22, thereby generating a damping force between the first mating member 11 and the third mating member 21 to buffer the vibration of the wheel, thereby reducing the vibration transmitted to the vehicle body, so as to improve the comfort of the driver and passengers.

[0064] In some embodiments of this disclosure, the driving member 111 is configured as a motor, the rotating member 112 is configured as a mating nut, and the second mating member 12 is configured as a lead screw structure. The driving member 111 drives the mating nut to rotate, and the mating nut drives the lead screw structure to reciprocate, so as to convert the rotation of the mating nut into the reciprocating movement of the lead screw structure, so that the second mating member 12 can reciprocate along a first direction. In some embodiments, as shown in FIG4, the driving member 111 includes a stator 111a and a rotor 111b. The stator 111a and the rotor 111b are coupled to drive the rotor 111b to rotate, and the rotor 111b cooperates with the rotating member 112 to drive the rotating member 112 to rotate.

[0065] In some embodiments, when the wheel bounces up or down, the force exerted by the wheel on the second mating member 12 causes the second mating member 12 to move relative to the first mating member 11, so as to smoothly adjust the distance between the wheel and the vehicle body. At this time, the drive member 111 can work to apply a damping force to the wheel through the second mating member 12 and the damper 20, buffer the vibration of the wheel, thereby reducing the vibration transmitted to the vehicle body and improving the comfort of the driver and passengers.

[0066] In some embodiments, the rotating member 112 is a mating nut fixed inside the rotor 111b of the motor. In this way, the motor can directly drive the mating nut to rotate without the need for a transmission component, which helps to reduce energy loss during transmission and thus improves efficiency.

[0067] In other embodiments, the rotating member 112 and the rotor 111b are integrally formed, so there is no need to set a connecting structure between the mating nut and the rotor. On the one hand, it is easy to reduce the complexity of the structure, and on the other hand, it is easy to reduce the size of the first mating member 11.

[0068] In some embodiments, the inner peripheral wall of the mating nut has a first threaded groove, as shown in FIG12, and the outer peripheral wall of the second mating member 12 has a second threaded groove 122. Ball bearings are disposed within the first and second threaded grooves 122. When the mating nut rotates, the ball bearings rotate within the first and second threaded grooves 122, thereby enabling rapid movement of the second mating member 12. When the driving member 111 is working, the mating nut applies a force to the second mating member 12 through the ball bearings, which helps to reduce the friction between the mating nut and the second mating member 12 and reduce energy loss.

[0069] In some embodiments, the up-and-down movement of the second mating member 12 is achieved using a ball screw, which is more efficient than oil pump drive. For example, the execution efficiency of the up-and-down movement of the second mating member 12 using a ball screw can reach 85%.

[0070] In some embodiments, as shown in FIG4, the first mating component 11 further includes a housing 113, within which a first bearing 43 and a second bearing 44 are disposed. The first bearing 43 and the second bearing 44 are located between the mating nut and the housing 113, at both ends of the mating nut, and configured to support the rotation of the mating nut. For example, the first bearing 43 and the second bearing 44 may be located at both ends of the mating nut in the vertical direction.

[0071] In some embodiments, the drive member 111 is provided with an excitation winding coil, and the mating nut is provided with a pair of magnetic poles. When the excitation winding coil is energized, it generates an alternating induced electromotive force, which acts as a rotating magnetic field. The mating nut is affected by the rotating magnetic field and rotates. When the mating nut rotates, it can drive the second mating member 12 to move.

[0072] In some embodiments of this disclosure, the second mating member 12 and the fourth mating member 22 are connected by a buffer assembly configured such that the second mating member 12 and the fourth mating member 22 are movable relative to each other. The buffer assembly is configured to buffer collisions between the second mating member 12 and the fourth mating member 22, thereby reducing the force transmitted to the second mating member 12 and reducing the force between the second mating member 12 and the first mating member 11.

[0073] Understandably, when the wheel bounces up or down due to road surface excitation, the vibration at the wheel is transmitted to the third mating component 21 and the fourth mating component 22. When the fourth mating component 22 vibrates, it causes a collision between the fourth mating component 22 and the second mating component 12. At this time, the buffer assembly can buffer the force between the second mating component 12 and the fourth mating component 22, thereby reducing the force on the second mating component 12, and further reducing the force transmitted from the second mating component 12 to the first mating component 11. This reduces the collision force between the second mating component 12 and the first mating component 11, preventing damage to the first mating component 11 and the second mating component 12 due to excessive collision force, thus improving the service life of the first mating component 11 and the second mating component 12, and consequently improving the service life of the suspension system.

[0074] In some embodiments, the ends of the second mating member 12 and the fourth mating member 22 facing each other are connected by a buffer assembly. When the fourth mating member 22 moves relative to the second mating member 12 along the first direction and comes into contact with the buffer assembly, the buffer assembly can buffer the force on the fourth mating member 22 to reduce the force transmitted to the second mating member 12, thereby reducing the force between the second mating member 12 and the first mating member 11.

[0075] In some embodiments, the damper 20 is configured as a hydraulic shock absorber. When the wheel bounces up or down, the third mating member 21 moves relative to the fourth mating member 22. At this time, the liquid in the damper 20 generates a damping force during the flow process to form a damping force to buffer the vibration of the wheel, thereby reducing the vibration transmitted to the vehicle body and improving the comfort of the driver and passengers.

[0076] Understandably, during the flow of the liquid, the fourth mating part 22 is also subjected to force. The buffer assembly buffers the force between the fourth mating part 22 and the second mating part 12, thereby reducing the force on the second mating part 12, reducing the force between the second mating part 12 and the mating nut, and preventing the mating nut from being damaged due to excessive force.

[0077] Furthermore, when the drive component 111 actively outputs damping force, the buffer assembly reduces the force on the second mating component 12. Compared to not setting the buffer assembly, the drive component 111 in this disclosure needs to output less damping force to achieve the same damping effect, thereby facilitating energy saving.

[0078] In some embodiments, the damper 20 is a semi-active electromagnetic damper or a continuous damping control (CDC) damper. In other embodiments, the damper 20 is a passive damper or a magnetorheological damper, which is not limited herein.

[0079] In some embodiments, the third mating member 21 includes a first chamber and a second chamber, which are connected by a first damping flow channel. The lower end of the fourth mating member 22 extends into the first chamber, and the volume of the first chamber changes when the third mating member 21 moves relative to the fourth mating member 22.

[0080] In some embodiments, the first chamber and the second chamber are arranged sequentially from bottom to top.

[0081] In some embodiments, when the wheel bounces upward, the wheel causes the third mating member 21 to move upward relative to the fourth mating member 22. At this time, the volume of the first chamber decreases and the pressure in the first chamber increases. The liquid in the first chamber enters the second chamber through the first damping channel. During the flow of the liquid, a damping force is generated to form a damping force between the third mating member 21 and the fourth mating member 22. At this time, the third mating member 21 has a downward damping force on the wheel to buffer the vibration of the wheel, thereby reducing the vibration transmitted to the vehicle body and improving the comfort of the driver and passengers.

[0082] Understandably, when the force on the fourth mating part 22 is large, the fourth mating part 22 will move upward. When the fourth mating part 22 moves upward relative to the second mating part 12 and the distance between the two gradually decreases, the buffer assembly can buffer the force between the fourth mating part 22 and the second mating part 12, thereby reducing the force on the second mating part 12, reducing the force between the second mating part 12 and the mating nut, and preventing the mating nut from being damaged due to excessive force.

[0083] In some embodiments, the upward movement of the second mating member 12 causes the mating nut to rotate clockwise. When the driving member 111 actively provides damping force, the driving member 111 exerts a counterclockwise force on the mating nut, the mating nut exerts a downward force on the second mating member 12, and the second mating member 12 exerts a downward force on the fourth mating member 22, so that the fourth mating member 22 exerts a downward force on the third mating member 21, thereby exerting a downward damping force on the wheel to reduce the vibration transmitted from the wheel to the vehicle body and improve the comfort of the driver and passengers.

[0084] When the wheel bounces down, the wheel causes the third mating component 21 to move downward relative to the fourth mating component 22. At this time, the volume of the first chamber increases and the pressure in the first chamber decreases. The liquid in the second chamber enters the first chamber through the first damping channel. During the flow of the liquid, a damping force is generated to form a damping force between the third mating component 21 and the fourth mating component 22. At this time, the third mating component 21 has an upward damping force on the wheel to buffer the vibration of the wheel, thereby reducing the vibration transmitted to the vehicle body and improving the comfort of the driver and passengers.

[0085] Understandably, when the force on the fourth mating part 22 is large, the fourth mating part 22 will move downward. When the fourth mating part 22 moves downward relative to the second mating part 12 and the distance between the two gradually increases, the buffer assembly can buffer the force between the fourth mating part 22 and the second mating part 12, thereby reducing the force on the second mating part 12, reducing the force between the second mating part 12 and the mating nut, and preventing the mating nut from being damaged due to excessive force.

[0086] In some embodiments, the downward movement of the second mating member 12 causes the mating nut to rotate counterclockwise. When the driving member 111 actively provides damping force, the driving member 111 exerts a clockwise force on the mating nut, the mating nut exerts an upward force on the second mating member 12, and the second mating member 12 exerts an upward force on the fourth mating member 22, so that the fourth mating member 22 applies an upward force to the third mating member 21, thereby exerting an upward damping force on the wheel to reduce the vibration transmitted to the vehicle body and improve the comfort of the driver and passengers.

[0087] It should be noted that when the wheel bounces upwards, the third mating component 21 moves upwards, reducing the distance between the wheel and the vehicle body. The third mating component 21 exerts a downward damping force on the wheel. When the drive component 111 is working, the damping force is provided by the damping force of the fluid flow and the output force of the drive component 111; when the drive component 111 is not working, the damping force is provided by the damping force of the fluid flow. In some embodiments, when the drive component 111 is not working and the fluid is not flowing at the instant the wheel bounces upwards, the damping force on the wheel is zero.

[0088] When the wheel bounces downwards, the third mating member 21 moves downwards, increasing the distance between the wheel and the vehicle body. The third mating member 21 exerts an upward damping force on the wheel. When the drive member 111 is working, the damping force is provided by the damping force of the fluid flow and the output force of the drive member 111; when the drive member 111 is not working, the damping force is provided by the damping force of the fluid flow. In some embodiments, when the drive member 111 is not working and the wheel bounces upwards at the instant the fluid does not flow, the damping force on the wheel is zero.

[0089] In some embodiments of this disclosure, as shown in FIG4, the suspension system further includes an outer cover 41, which is installed to at least one of the vehicle height adjustment device 10 or the damper 20. The buffer assembly is located inside the outer cover 41, which can protect the buffer assembly and support the buffer assembly so that the buffer assembly can stably connect the second mating member 12 and the fourth mating member 22.

[0090] In some embodiments of this disclosure, the buffer assembly slides in contact with the inner peripheral wall of the outer cover 41 to limit the movement of the buffer assembly. When the second mating member 12 and the first mating member 11 move relative to each other, the second mating member 12 will drive the buffer assembly to move. When the fourth mating member 22 and the third mating member 21 move relative to each other, the fourth mating member 22 will drive the buffer assembly to move, so that the buffer assembly and the outer cover 41 slide in contact with each other. This ensures that when the buffer assembly stably connects the second mating member 12 and the fourth mating member 22 and buffers the force between the second mating member 12 and the fourth mating member 22, it will not affect the relative movement of the first mating member 11 and the second mating member 12, nor will it affect the relative movement of the fourth mating member 22 and the third mating member 21.

[0091] In some embodiments of this disclosure, as shown in Figures 4 and 6, the first mating member 11 includes a housing 113 and a rotating member 112. The housing 113 defines a receiving cavity, and the rotating member 112 is disposed within the receiving cavity. In some embodiments, the housing 113 has an opening on the side facing the damper 20, and the second mating member 12 is adapted to pass through the opening and engage with the rotating member 112 so that the rotating member 112 drives the reciprocating movement of the second mating member 12.

[0092] In some embodiments, the second mating member 12 is configured as a lead screw structure, and the rotating member 112 is configured as a mating nut. When the rotating member 112 rotates, one end of the second mating member 12 extends into the receiving cavity from the open opening to engage with the rotating member 112 in the receiving cavity, thereby driving the second mating member 12 to reciprocate along the first direction when the rotating member 112 rotates.

[0093] In some embodiments, a first end of the housing 113 is connected to the vehicle body, and a second end of the housing 113 is connected to the outer cover 41, so as to define the position of the outer cover 41 using the housing 113. Here, the first end and the second end of the housing 113 can be referred to as the two ends of the housing 113 along a first direction.

[0094] In some embodiments, the housing 113 and the outer cover 41 are integrally formed, which reduces the connection structure between the housing 113 and the outer cover 41 and reduces the complexity of the vehicle's suspension system structure. In other embodiments, the housing 113 and the outer cover 41 are formed separately and then fixed together, which reduces the molding difficulty.

[0095] In some embodiments of this disclosure, as shown in Figures 4 and 5, the outer cover 41 is fixed to the vehicle height adjustment device 10. The suspension system also includes a first elastic element 61, which is connected to both the buffer assembly and the outer cover 41. When the buffer assembly moves within the outer cover 41 and compresses the first elastic element 61, the first elastic element 61 can prevent collisions between the buffer assembly and the outer cover 41. For example, the first elastic element 61 may have its two ends along a first direction connected to both the buffer assembly and the outer cover 41.

[0096] In some embodiments, as shown in FIG5, a sealing member 42 is provided at the bottom of the outer cover 41 (the lower side of the outer cover 41 in FIG5). The sealing member 42 is connected to the damper 20. The fourth mating member 22 extends into the outer cover 41 through the sealing member 42. The first elastic member 61 is connected to the buffer assembly and the sealing member 42 respectively. When the buffer assembly moves in the outer cover 41 toward the sealing member 42, the first elastic member 61 is compressed to avoid collision between the buffer assembly and the sealing member 42. For example, the two ends of the first elastic member 61 along the first direction can be connected to the buffer assembly and the sealing member 42 respectively.

[0097] In some embodiments, the sealing member 42 slides against the inner wall of the outer cover member 41 to restrict the direction of relative movement between the vehicle height adjustment device 10 and the damper 20, so as to smoothly adjust the distance between the wheel and the vehicle body.

[0098] As shown in Figures 4 and 5, in some embodiments of this disclosure, the outer cover 41 is fixed to the first mating member 11, and the sealing member 42 is fixed to the third mating member 21. To adjust the distance between the wheel and the vehicle body, the third mating member 21 and the first mating member 11 will move relative to each other, at which point the sealing member 42 slides within the outer cover 41. When the wheel bounces upwards, the wheel drives the third mating member 21 to move upwards, and the third mating member 21 drives the sealing member 42 to move upwards. At this time, the distance between the sealing member 42 and the buffer assembly gradually decreases, and the first elastic member 61 is compressed. The first elastic member 61 can buffer the movement of the third mating member 21 and prevent the sealing member 42 from colliding with the buffer assembly.

[0099] In some embodiments, the first elastic element 61 is a spring element. When the wheel bounces up or down and drives the third mating element 21 to move, the first elastic element 61 is compressed or stretched. When the first elastic element 61 undergoes elastic deformation, the first elastic element 61 can buffer the movement of the third mating element 21. The first elastic element 61 has a damping force on the wheel through the third mating element 21 to buffer the vibration of the wheel.

[0100] In other embodiments of this disclosure, the outer cover 41 is fixed to the vehicle height adjustment device 10, and a sealing member 42 is provided at the bottom of the outer cover 41, which is connected to the damper 20. In some embodiments, the outer cover 41 and the buffer assembly define a third chamber and a fourth chamber, which are connected through a second damping flow channel. The buffer assembly defines a piston portion, and the piston portion, the sealing member 42, and the outer cover 41 define a third chamber. The piston portion and the sealing member 42 are movable within the third chamber. When the wheel bounces up or down to move the sealing member 42, the volume of the third chamber changes, and the pressure within the third chamber changes. When the liquid flows in the second damping flow channel, a damping force is generated. At this time, the sealing member 42 has a damping force on the wheel to buffer the vibration of the wheel. For example, the third chamber and the fourth chamber are arranged sequentially from bottom to top; or, the third chamber and the fourth chamber are arranged sequentially from top to bottom.

[0101] In some embodiments of this disclosure, as shown in FIG4, the suspension system further includes a dust cover 63, which covers the sealing member 42. The dust cover 63 is connected to the end of the outer cover member 41 and the damper 20 respectively, so that the sealing member 42 can always be covered inside the dust cover 63 when the wheel bounces up and down, so as to prevent dust from entering the interior of the outer cover member 41 from the gap between the sealing member 42 and the outer cover member 41.

[0102] As shown in Figures 4 and 5, the outer cover 41 is fixed to the first mating part 11, and the dust cover 63 is connected to the end of the outer cover 41 and the third mating part 21 respectively. When the wheel drives the third mating part 21 to jump up or down, the dust cover 63 is compressed or stretched so as to always cover the sealing part 42 inside the dust cover 63, so as to prevent dust from entering the interior of the outer cover 41 from the gap between the sealing part 42 and the outer cover 41.

[0103] In some embodiments of this disclosure, as shown in Figures 1 to 4, the suspension system further includes a second elastic element 62, which is covered by an outer cover 41. The second elastic element 62 is connected to the vehicle height adjustment device 10 and the damper 20, respectively. The second elastic element 62 is configured to absorb vibrations at the damper 20 to reduce vibrations transmitted from the wheel to the vehicle height adjustment device 10 and the vehicle body, thereby improving the comfort of the driver and passengers. In addition, the second elastic element 62 can also buffer the relative movement of the vehicle height adjustment device 10 and the damper 20 so that the vehicle height adjustment device 10 and the damper 20 can move relative to each other smoothly.

[0104] In addition, the second elastic element 62 can also provide support between the vehicle height adjustment device 10 and the damper 20 to provide support for the vehicle body.

[0105] In some embodiments, the outer cover 41 is fixed to the first mating member 11, and the second elastic member 62 covers the outer cover 41 and is connected to both the first mating member 11 and the third mating member 21. The second elastic member 62 can absorb vibrations at the third mating member 21 to reduce vibrations transmitted from the wheel to the first mating member 11 and the vehicle body, thereby improving the comfort of the occupants. Furthermore, the second elastic member 62 can also buffer the relative movement between the third mating member 21 and the first mating member 11, so that the third mating member 21 and the first mating member 11 can move relative to each other smoothly.

[0106] In some embodiments, as shown in FIG4, the first mating member 11 includes a driving member 111 and a rotating member 112. The driving member 111 is a motor. The driving member 111 is located above the second elastic member 62. When the driving member 111 drives the rotating member 112 to rotate, the driving member 111 itself will generate high-frequency vibration. By placing the driving member 111 above the second elastic member 62, it is convenient to use the second elastic member 62 to buffer the vibration of the driving member 111, reduce the vibration acceleration of the driving member 111, and improve the stability of vehicle driving.

[0107] In some embodiments of this disclosure, as shown in FIG5, the buffer assembly includes a first connector 31, a second connector 223 and a first buffer 33. The first connector 31 is connected to the second mating member 12, and the second connector 223 is connected to the fourth mating member 22. The first connector 31 and the second connector 223 cooperate with each other to realize the connection between the second mating member 12 and the fourth mating member 22.

[0108] In some embodiments, a first buffer 33 is disposed between a first connector 31 and a second connector 223. The first buffer 33 is configured to buffer the relative movement of the second mating member 12 and the fourth mating member 22, thereby achieving a soft connection between the second mating member 12 and the fourth mating member 22. The first buffer 33 can buffer the force between the second mating member 12 and the fourth mating member 22 to reduce the force on the second mating member 12, thereby reducing the collision force between the second mating member 12 and the first mating member 11, preventing damage to the first mating member 11 and the second mating member 12 due to excessive collision force, thus improving the service life of the first mating member 11 and the second mating member 12, and consequently improving the service life of the suspension system.

[0109] In some embodiments of this disclosure, the first connecting member 31 and the second connecting member 223 are slidably engaged. Since the first connecting member 31 is connected to the second mating member 12 and the second connecting member 223 is connected to the fourth mating member 22, and the second mating member 12 and the fourth mating member 22 are relatively movable, when the second mating member 12 and the fourth mating member 22 move relative to each other, the first connecting member 31 and the second connecting member 223 can slide relative to each other. At this time, the first buffer member 33 located between the first connecting member 31 and the second connecting member 223 buffers the collision between the first connecting member 31 and the second connecting member 223, thereby reducing the force on the first connecting member 31 and the second mating member 12, so as to reduce the collision force between the second mating member 12 and the first mating member 11, avoid damage to the first mating member 11 and the second mating member 12 due to excessive collision force between them, and facilitate the improvement of the service life of the first mating member 11 and the second mating member 12, thereby improving the service life of the suspension system.

[0110] In some embodiments, when the first connector 31 and the second connector 223 slide relative to each other to their limit positions, the fourth mating member 22 drives the second mating member 12 to move via the first connector 31 and the second connector 223. Similarly, the second mating member 12 drives the fourth mating member 22 to move via the first connector 31 and the second connector 223.

[0111] In some embodiments, the first connector 31 is fitted over the second connector 223. The first connector 31 has a first stop portion, and the second connector 223 has a second stop portion. The first stop portion is located above the second stop portion.

[0112] In some embodiments, the first buffer 33 is located between the first stop portion and the second stop portion. During the process of the fourth mating member 22 moving downward relative to the second mating member 12 and the second connecting member 223 sliding downward relative to the first connecting member 31, when the first stop portion and the second stop portion clamp the first buffer 33, the fourth mating member 22 drives the second mating member 12 to move downward and the two no longer move relative to each other.

[0113] In some embodiments, the first buffer 33 is located between the second stop portion and the inner top wall (such as the first stop portion) of the first connector 31. During the process of the fourth mating member 22 moving upward relative to the second mating member 12 and the second connector 223 sliding upward relative to the first connector 31, when the second stop portion clamps the first buffer 33 with the inner top wall of the first connector 31, the fourth mating member 22 drives the second mating member 12 to move upward and the two no longer move relative to each other.

[0114] In some embodiments of this disclosure, as shown in Figures 4 to 7, the buffer assembly further includes a mating end cap 32, which is fixedly connected to the first connector 31 to form a sliding chamber for the second connector 223 to slide. This defines the direction of movement between the first connector 31 and the second connector 223 to ensure the buffering distance.

[0115] In some embodiments of this disclosure, as shown in FIG5, a second buffer 34 is provided between the second connector 223 and the mating end cap 32. The second buffer 34 is configured to buffer the force between the second connector 223 and the mating end cap 32, so as to reduce the force on the second mating member 12, thereby reducing the collision force between the second mating member 12 and the first mating member 11, avoiding damage to the first mating member 11 and the second mating member 12 due to excessive collision force between them, and facilitating the improvement of the service life of the first mating member 11 and the second mating member 12, thereby improving the service life of the suspension system.

[0116] In some embodiments, as shown in Figures 4 to 7, the first connector 31 is fixed to the lower end of the second mating member 12, the mating end cap 32 is sleeved on the fourth mating member 22 and the fourth mating member 22 can move up and down relative to the mating end cap 32, the mating end cap 32 is threadedly fixedly connected to the first connector 31, and the mating end cap 32 and the first connector 31 define a sliding chamber 301.

[0117] It should be noted that the above directional limitations are only for the purpose of describing the attached drawings and do not limit the actual setting position and direction of the suspension system.

[0118] In some embodiments of this disclosure, as shown in Figures 4 and 5, the second connector 223 and the fourth mating member 22 are integral parts. For example, the fourth mating member 22 is formed in the shape of a column, and the second connector 223 is disposed at the upper end of the fourth mating member 22.

[0119] The second connector 223 is located inside the sliding chamber 301 and the outer peripheral wall of the second connector 223 extends beyond the outer peripheral wall of the fourth mating member 22. The first buffer member 33 and the second buffer member 34 are both located inside the sliding chamber 301. The first buffer member 33 is located between the first connector 31 and the second connector 223, and the second buffer member 34 is located between the mating end cap 32 and the second connector 223.

[0120] When the fourth mating member 22 moves upward relative to the second mating member 12, the first buffer member 33 can buffer the force between the first connecting member 31 and the second connecting member 223 to reduce the force on the first connecting member 31. Since the first connecting member 31 is fixed to the second mating member 12, the force on the second mating member 12 can also be reduced. When the fourth mating member 22 moves downward relative to the second mating member 12, the second buffer member 34 can buffer the force between the mating end cap 32 and the second connecting member 223 to reduce the force on the second connecting member 223. Since the mating end cap 32 is fixedly connected to the first connecting member 31, the force on the first connecting member 31 and the second mating member 12 can also be reduced.

[0121] In some embodiments, the first connector 31 may be integrally formed with the second mating member 12, or it may be fixed to the second mating member 12 by means of the first fastener 316 (as shown in FIG. 7) or welding, etc. This disclosure does not limit this.

[0122] In some embodiments of this disclosure, as shown in Figures 6 and 7, the second connecting member 223 and the fourth mating member 22 are separate components. The second connecting member 223 is connected to the end of the fourth mating member 22, and the outer peripheral wall of the second connecting member 223 extends beyond the outer peripheral wall of the fourth mating member 22. The connection in some embodiments of this disclosure can be a fixed connection, a detachable connection, or an integral connection, etc. For example, the second connecting member 223 can be fixedly connected to the end of the fourth mating member 22.

[0123] In some embodiments of this disclosure, as shown in Figures 4 to 7, the first connecting member 31 and the mating end cap 32 are fixedly connected. At least one of the second mating member 12 and the fourth mating member 22 abuts against the first buffer member 33. The first buffer member 33 can buffer the force between the second mating member 12 and the fourth mating member 22 to reduce the force on the second mating member 12, thereby reducing the collision force between the second mating member 12 and the first mating member 11. This prevents the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force between them, thus improving the service life of the first mating member 11 and the second mating member 12, and consequently improving the service life of the suspension system.

[0124] In some embodiments of this disclosure, as shown in Figures 7 and 9, the buffer assembly further includes an annular extension 322. The mating end cap 32 is connected to the first connector 31 via the extension 322 to define a sliding chamber. The extension 322 is fixedly connected to one of the mating end cap 32 and the first connector 31, or they are integral parts. This simplifies the connection method between the mating end cap 32 and the first connector 31.

[0125] As shown in Figures 4 and 5, in some embodiments of this disclosure, the extension 322 and the first connector 31 are integral and extend toward the second connector 223, and the end cap 32 seals the lower opening of the extension 322 to define the sliding chamber 301.

[0126] As shown in Figures 6 and 7, in some other embodiments of this disclosure, the extension 322 and the mating end cap 32 are integral parts, and the extension 322 cooperates with the first connector 31 to define the sliding chamber 301.

[0127] In some embodiments of this disclosure, as shown in Figures 4 and 5, the suspension system further includes an outer cover 41, the buffer assembly slides in contact with the inner peripheral wall of the outer cover 41, the first mating member 11 includes a driving member 111 and a rotating member 112, the driving member 111 drives the rotating member 112 to rotate, and the second mating member 12 is a lead screw structure that mats with the rotating member 112.

[0128] In some embodiments, as shown in Figures 10 and 11, the first connecting member 31 is fixed to the second mating member 12. The outer peripheral wall of the first connecting member 31 is provided with a guide protrusion 315, and the inner peripheral wall of the outer cover member 41 is provided with a guide groove. The guide groove extends in the vertical direction to restrict the movement of the first connecting member 31 and to restrict the rotation of the first connecting member 31. Since the first connecting member 31 is fixed to the second mating member 12, by restricting the rotation of the first connecting member 31, the rotation of the second mating member 12 can be restricted, thereby making the second mating member 12 only move relative to the rotating member 112 and not rotate with the rotating member 112.

[0129] In some embodiments of this disclosure, as shown in Figures 6 and 7, the first connector 31 includes a first fixing member 316 and a first outer sleeve 317. The first fixing member 316 is connected to the end of the second mating member 12 and the outer peripheral wall of the first fixing member 316 extends beyond the outer peripheral wall of the second mating member 12. The extension 322 and the first outer sleeve 317 cooperate. The second connector 223 is connected to the end of the fourth mating member 22 and the outer peripheral wall of the second connector 223 extends beyond the outer peripheral wall of the fourth mating member 22. The first fixing member 316 and the second connector 223 can move relative to each other to realize the relative movement of the second mating member 12 and the fourth mating member 22.

[0130] Here, the end of the second mating member 12 can be referenced to the end of the second mating member 12 near the fourth mating member 22; the end of the fourth mating member 22 can be referenced to the end of the fourth mating member 22 near the second mating member 12.

[0131] In some embodiments, as shown in FIG7, a first outer sleeve 317 is fitted over a second mating member 12 and the second mating member 12 is movable relative to the first outer sleeve 317; a first fastener 316 is configured to limit the range of relative movement of the second mating member 12 relative to the first outer sleeve 317.

[0132] In some embodiments, the end cap 32 and the extension 322 are integral to define the second outer sleeve, the second outer sleeve is fitted over the fourth fitting 22 and the fourth fitting 22 is movable relative to the second outer sleeve, and the second connector 223 can limit the range of relative movement of the fourth fitting 22 relative to the second outer sleeve, so as to connect the second fitting 12 and the fourth fitting 22 by means of the first connector 31 and the second outer sleeve, and to allow the second fitting 12 and the fourth fitting 22 to move relative to each other.

[0133] In some embodiments, when the fourth mating member 22 moves downward, the fourth mating member 22 exerts a downward force on the second outer sleeve through the second connector 223, the second outer sleeve drives the first outer sleeve 317 to move downward, and the first outer sleeve 317 drives the first fixing member 316 and the second mating member 12 to move downward.

[0134] When the fourth mating member 22 moves upward, the fourth mating member 22 squeezes the first buffer member 33 through the second connector 223 and moves upward relative to the second mating member 12. After the first buffer member 33 is compressed to a certain extent, the fourth mating member 22 drives the first fixing member 316 and the second mating member 12 to move upward. When the first fixing member 316 moves upward, it drives the first outer sleeve 317 to move upward.

[0135] In some embodiments of this disclosure, as shown in FIG7, the first outer sleeve 317 includes a protruding mating portion 311 protruding toward the second connector 223, and an extension portion 322 is fitted onto the protruding mating portion 311, thereby facilitating the mating of the extension portion 322 and the first outer sleeve 317.

[0136] A second buffer 34 is provided between the second connector 223 and the mating end cap 32 of the second outer kit. The second buffer 34 can buffer the collision between the second connector 223 and the second outer kit, thereby reducing the force on the second outer kit. Since the second outer kit is fixed to the first connector 31, it can also reduce the force on the first connector 31 and the mating part 12.

[0137] In some embodiments, the first outer sleeve 317 is fixedly connected to the second mating member 12, the protruding mating portion 311 has an internal thread, the extension portion 322 of the second outer sleeve has an external thread, the protruding mating portion 311 and the extension portion 322 are threadedly fixedly connected, a first buffer 33 is provided between the second connecting member 223 and the first fixing member 316, and a second buffer 34 is provided between the second connecting member 223 and the mating end cap 32 of the second outer sleeve.

[0138] When the fourth mating member 22 moves upward relative to the second mating member 12, the first buffer member 33 can buffer the force between the first fixing member 316 and the second connecting member 223 to reduce the force on the first connecting member 31. Since the first connecting member 31 is fixed to the second mating member 12, the force on the second mating member 12 can also be reduced. When the fourth mating member 22 moves downward, the second buffer member 34 can buffer the force between the second connecting member 223 and the second outer sleeve to reduce the force on the second outer sleeve. Since the second outer sleeve is fixedly connected to the first connecting member 31, the force on the first connecting member 31 and the second mating member 12 can also be reduced.

[0139] In some embodiments of this disclosure, as shown in Figures 6 and 7, the first buffer member 33 abuts against the first connecting member 31 and the second connecting member 223 respectively. When the first connecting member 31 and the second connecting member 223 move relative to each other, the first buffer member 33 can buffer the collision between the first connecting member 31 and the second connecting member 223. Since the first connecting member 31 is disposed on the second mating member 12 and the second connecting member 223 is disposed on the fourth mating member 22, it can also buffer the force between the second mating member 12 and the fourth mating member 22, thereby reducing the force on the second mating member 12. For example, the first buffer member 33 can abut against the first connecting member 31 and the second connecting member 223 on both sides along the first direction respectively.

[0140] In some other embodiments of this disclosure, as shown in Figures 4 and 5, the first buffer 33 abuts against the first connecting member 31 and the fourth mating member 22 provided with the second connecting member 233. When the first connecting member 31 and the fourth mating member 22 move relative to each other, the first buffer 33 can buffer the collision between the first connecting member 31 and the fourth mating member 22. Since the first connecting member 31 is provided on the second mating member 12, it can also buffer the force between the second mating member 12 and the fourth mating member 22, thereby reducing the force on the second mating member 12.

[0141] In some embodiments of this disclosure, as shown in Figures 6 and 7, the suspension system further includes an outer cover 41, and the buffer assembly slides in contact with the inner peripheral wall of the outer cover 41. The first mating member 11 includes a driving member 111 and a rotating member 112, the driving member 111 driving the rotating member 112 to rotate, and the second mating member 12 is a lead screw structure that meshes with the rotating member 112.

[0142] The first connector 31 is provided on the second mating part 12, as shown in FIG11. The outer peripheral wall of the first connector 31 is provided with a guide protrusion 315, and the inner peripheral wall of the outer cover 41 is provided with a guide groove. The guide groove extends in the vertical direction to restrict the movement of the first connector 31 and to restrict the rotation of the first connector 31.

[0143] The first connector 31 includes a first fixing member 316 and a first outer sleeve 317. The first outer sleeve 317 is fitted onto the second mating member 12. The outer peripheral wall of the first outer sleeve 317 is provided with a guide protrusion 315. The inner peripheral wall of the outer cover member 41 is provided with a guide groove. The guide groove extends in the vertical direction to restrict the movement of the first outer sleeve 317 and to restrict the rotation of the first outer sleeve 317.

[0144] As shown in Figures 11 and 12, the first outer sleeve 317 has a mating hole 319 and a non-circular anti-rotation hole 318. The end of the second mating member 12 has a plug-in portion 121, which is plugged into the anti-rotation hole 318. The first fixing member 316 passes through the mating hole 319 and is fixed to the end of the second mating member 12, with the outer peripheral wall of the first fixing member 316 extending beyond the outer peripheral wall of the second mating member 12. This secures the first outer sleeve 317 at the end of the second mating member 12, preventing the first outer sleeve 317 from coming off the lower end of the second mating member 12. In some embodiments, the plug-in portion 121 is plugged into the anti-rotation hole 318 to restrict the rotation of the second mating member 12, thereby ensuring that the second mating member 12 can only move relative to the rotating member 112 and will not rotate with the rotating member 112.

[0145] In some embodiments of this disclosure, the first buffer 33 is at least one of a buffer material layer, a spring, or a metal sheet. When the first elastic member 61 is compressed, the first elastic member 61 undergoes elastic deformation to buffer the collision between the first connecting member 31 and the second connecting member 223, or to buffer the collision between the first connecting member 31 and the fourth mating member 22. This reduces the force on the second mating member 12, lowers the collision force between the second mating member 12 and the first mating member 11, and prevents the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force between them. This facilitates the improvement of the service life of the first mating member 11 and the second mating member 12, thereby improving the service life of the suspension system.

[0146] In some embodiments of this disclosure, as shown in Figures 8 and 9, the buffer assembly includes a buffer groove 221 and an extension portion 313. The extension portion 313 extends into the buffer groove 221 and moves in conjunction with the buffer groove 221, thereby making the buffering principle of the buffer assembly simple and reliable.

[0147] As shown in Figures 8 and 9, one of the buffer groove 221 and the extension portion 313 is located on the second mating member 12, and the other is located on the fourth mating member 22. The extension portion 313 and the buffer groove 221 are sealed together. When the second mating member 12 and the fourth mating member 22 move relative to each other, and the extension portion 313 gradually extends into the buffer groove 221, the air in the buffer groove 221 is compressed, generating a damping force between the second mating member 12 and the fourth mating member 22. This separates the extension portion 313 from the bottom wall of the buffer groove 221, preventing the extension portion 313 from colliding with the bottom wall of the buffer groove 221. Consequently, it also prevents the second mating member 12 from colliding with the fourth mating member 22, reducing the force on the second mating member 12 and lowering the collision force between the second mating member 12 and the first mating member 11. This prevents the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force, thus improving the service life of the first mating member 11 and the second mating member 12, and consequently, improving the service life of the suspension system.

[0148] Furthermore, when the fourth mating member 22 moves relative to the second mating member 12 and the air in the buffer groove 221 is compressed, a force is generated between the second mating member 12 and the fourth mating member 22. This allows the fourth mating member 22 to move the second mating member 12 even when there is no collision between the second mating member 12 and the fourth mating member 22. This helps to isolate the vibration acceleration on the fourth mating member 22, thereby reducing the vibration acceleration transmitted from the wheel to the vehicle height adjustment device 10 and the vehicle body.

[0149] In some embodiments of this disclosure, as shown in FIG9, the end of the second mating member 12 is provided with a first connecting member 31. The first connecting member 31 also includes an extension 322 located outside the extension portion 313. The outer peripheral wall of the fourth mating member 22 is also provided with a mating end cap 32. The extension portion 322 is sleeved on the mating end cap 32 so that when the second mating member 12 and the fourth mating member 22 are connected by the first connecting member 31 and the mating end cap 32, the second mating member 12 and the fourth mating member 22 can move relative to each other.

[0150] In some embodiments, the extension portion 313 is connected to the first connector 31, and the buffer groove 221 is provided on the end face of the fourth mating member 22. When the fourth mating member 22 moves upward relative to the second mating member 12, the air in the buffer groove 221 is compressed and a damping force is generated between the buffer groove 221 and the extension portion 313 to avoid collision between the first connector 31 and the fourth mating member 22, thereby reducing the force on the second mating member 12 and reducing the collision force between the second mating member 12 and the first mating member 11. This prevents the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force between them, thus improving the service life of the first mating member 11 and the second mating member 12 and thereby improving the service life of the suspension system.

[0151] In some embodiments of this disclosure, as shown in FIG9, the outer peripheral wall of the mating end cap 32 is provided with a stop protrusion 323. In the first direction, the stop protrusion 323 is located on one side of the extension 322. When the extension 322 and the mating end cap 32 are assembled in place, the extension 322 and the stop protrusion 323 stop and engage to guide the degree of engagement between the extension 322 and the mating end cap 32.

[0152] As shown in Figure 9, in some embodiments of this disclosure, the stop protrusion 323 is located at the lower end of the extension 322. The inner peripheral wall of the extension 322 has an internal thread, and the outer peripheral of the mating end cap 32 has an external thread. The extension 322 is threadedly connected to the mating end cap 32. When the extension 322 and the mating end cap 32 are connected in place, the extension 322 and the stop protrusion 323 stop and engage.

[0153] In some embodiments of this disclosure, as shown in FIG9, the suspension system further includes a third buffer 35, which is located between the second connecting member 223 and the mating end cap 32 of the fourth mating member 22. When relative movement occurs between the fourth mating member 22 and the mating end cap 32, the third buffer 35 can buffer the collision between the fourth mating member 22 and the mating end cap 32, thereby reducing the force on the mating end cap 32. Since the mating end cap 32 cooperates with the first connecting member 31 to reduce the force on the second mating member 12, the collision force between the second mating member 12 and the first mating member 11 can be reduced, avoiding damage to the first mating member 11 and the second mating member 12 due to excessive collision force between them. This facilitates the improvement of the service life of the first mating member 11 and the second mating member 12, thereby improving the service life of the suspension system.

[0154] In some embodiments, as shown in Figures 8 and 9, the mating end cap 32 is fitted over the fourth mating member 22, and the fourth mating member 22 is movable up and down relative to the mating end cap 32. The mating end cap 32 is threadedly fixedly connected to the first connecting member 31. The upper end of the fourth mating member 22 is provided with a second connecting member 223, the outer peripheral wall of the second connecting member 223 extending beyond the outer peripheral wall of the fourth mating member 22. The third buffer member 35 is located between the second connecting member 223 and the mating end cap 32.

[0155] As the fourth mating member 22 moves upward, the buffer groove 221 moves upward relative to the extension 313. During this process, the damping force generated by the compression of air in the buffer groove 221 can separate the extension 313 from the bottom wall of the buffer groove 221, preventing the extension 313 from colliding with the bottom wall of the buffer groove 221, and thus preventing the second mating member 12 and the fourth mating member 22 from colliding.

[0156] When the fourth mating member 22 moves downward, and the second connecting member 223 and the mating end cap 32 press the third buffer member 35 together, the third buffer member 35 can buffer the collision between the second connecting member 223 and the mating end cap 32. Since the mating end cap 32 is fixed to the second mating member 12 through the first connecting member 31, it can also reduce the force on the second mating member 12, thereby reducing the collision force between the second mating member 12 and the first mating member 11, avoiding damage to the first mating member 11 and the second mating member 12 due to excessive collision force between them, thus improving the service life of the first mating member 11 and the second mating member 12, and thus improving the service life of the suspension system.

[0157] In some embodiments, the first connector 31 may be integrally formed with the second mating member 12, or it may be fixed to the second mating member 12 by means of the first fastener 316 or welding, etc., and this disclosure does not impose any restrictions on this. The second connector 223 may be integrally formed with the fourth mating member 22, or it may be fixed to the fourth mating member 22 by means of fastener fixing or welding, etc., and this disclosure does not impose any further restrictions on this.

[0158] In some embodiments of this disclosure, as shown in FIG9, the suspension system further includes a sealing ring 37, which is fitted over the extension portion 313 to seal the gap between the extension portion 313 and the buffer groove 221, thereby preventing air leakage from the buffer groove 221.

[0159] In some embodiments, the sealing ring 37 is fixed to the extension portion 313. When the extension portion 313 moves within the buffer groove 221, the sealing ring 37 moves with the extension portion 313 to compress the air within the buffer groove 221.

[0160] In other embodiments, the sealing ring 37 is fixed to the end of the buffer groove 221 facing the second mating member 12. The sealing ring 37 is configured to seal the gap between the buffer groove 221 and the extension 313 to form a closed buffer groove 221. As the extension 313 moves within the buffer groove 221, it can compress air to use the resistance generated when the air is compressed to separate the extension 313 from the bottom wall of the buffer groove 221, thus preventing the extension 313 from colliding with the bottom wall of the buffer groove 221.

[0161] Referring to FIG13, a vehicle 1000 according to some embodiments of the present disclosure is described below. The vehicle according to some embodiments of the present disclosure includes a suspension system 1 according to the above embodiments of the present disclosure.

[0162] According to some embodiments of the present disclosure, the vehicle 1000, by utilizing the suspension system 1 according to the above embodiments of the present disclosure, can buffer the collision between the fourth mating member 22 and the second mating member 12 by allowing relative movement between them, thereby reducing the force on the second mating member 12, and further reducing the collision force between the second mating member 12 and the first mating member 11, preventing the first mating member 11 and the second mating member 12 from being damaged due to excessive collision force between them, thus improving the service life of the first mating member 11 and the second mating member 12, and thereby improving the service life of the suspension system.

[0163] Other configurations and operations of the vehicle according to embodiments of this disclosure are known to those skilled in the art and will not be described in detail here.

[0164] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more. In the description of this disclosure, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not in direct contact but through another feature between them.

[0165] In the description of this disclosure, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0166] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the meaning of the above terms in this disclosure based on the circumstances.

[0167] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0168] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle suspension system, comprising: A vehicle height adjustment device (10) includes a first mating part (11) and a second mating part (12) that move relative to each other in a first direction, wherein the first mating part (11) is adapted to be installed on the vehicle body; and The damper (20) includes a third mating member (21) and a fourth mating member (22) that are movable relative to each other in the first direction. The third mating member (21) is adapted to be mounted to a wheel. In the first direction, the vehicle height adjustment device (10) and the damper (20) are arranged in sequence. The second mating member (12) and the fourth mating member (22) are connected and movable relative to each other.

2. The vehicle suspension system according to claim 1, wherein, The first mating member (11) includes a driving member (111) and a rotating member (112). The driving member (111) drives the rotating member (112) to rotate. The rotating member (112) engages with the second mating member (12) to make the second mating member (12) reciprocate.

3. The vehicle suspension system according to claim 2, wherein, The driving component (111) is configured as a motor, the rotating component (112) is configured as a mating nut, and the second mating component (12) is configured as a lead screw structure; The motor includes: a rotor (111b), and the rotating component (112) is fixed to the rotor (111b); or the rotating component (112) is integrally formed with the rotor (111b); The mating nut engages with the lead screw structure to allow the lead screw structure to move along the first direction.

4. The suspension system of the vehicle according to any one of claims 1-3, wherein, The second mating member (12) and the fourth mating member (22) are connected by a buffer assembly configured such that the second mating member (12) and the fourth mating member (22) are movable relative to each other.

5. The suspension system of the vehicle according to claim 4, further comprising an outer cover (41) mounted to at least one of the vehicle height adjustment device (10) or the damper (20), the buffer assembly being located inside the outer cover (41).

6. The vehicle suspension system according to claim 5, wherein, The buffer assembly slides in contact with the inner peripheral wall of the outer cover (41).

7. The suspension system of the vehicle according to any one of claims 4-6, wherein, The first mating component (11) includes a housing (113) and a rotating component (112), wherein the housing (113) defines a receiving cavity, and the rotating component (112) is disposed within the receiving cavity; The housing (113) has an opening on the side facing the damper (20), and the second mating part (12) is adapted to mate with the rotating part (112) through the opening.

8. The vehicle suspension system according to claim 7, further comprising an outer cover (41), the buffer assembly being located inside the outer cover (41), a first end of the housing (113) being connected to the vehicle body, and a second end of the housing (113) being connected to the outer cover (41); in, The housing (113) and the outer cover (41) are integrally formed or separately formed.

9. The vehicle suspension system according to claim 8 further includes a first elastic element (61), the first elastic element (61) being disposed inside the outer cover (41), the first elastic element (61) being connected to the buffer assembly and the outer cover (41) respectively.

10. The vehicle suspension system according to claim 9, wherein, The bottom of the outer cover (41) is provided with a sealing member (42), which is located on the damper (20). The first elastic member (61) is connected to the buffer assembly and the sealing member (42) respectively.

11. The vehicle suspension system according to claim 10 further includes a dust cover (63) covering the sealing member (42), the dust cover (63) being connected to the end of the outer cover member (41) and the damper (20) respectively.

12. The suspension system of the vehicle according to any one of claims 5-11, further comprising a second elastic element (62), the second elastic element (62) being covered by the outer cover (41) of the suspension system, the second elastic element (62) being connected to the vehicle height adjustment device (10) and the damper (20) respectively.

13. The suspension system of the vehicle according to any one of claims 4-12, wherein, The buffer component includes: A first connector (31) is disposed on the second mating member (12); A second connector (223) is provided on the fourth mating member (22), and the first connector (31) and the second connector (223) are mated together; and A first buffer (33) is disposed between the first connector (31) and the second connector (223).

14. The vehicle suspension system according to claim 13, wherein, The first connector (31) and the second connector (223) are in sliding engagement.

15. The vehicle suspension system according to claim 14, wherein, The buffer assembly further includes a mating end cap (32), which is connected to the first connector (31) to form a sliding chamber (301) for sliding of the second connector (223).

16. The vehicle suspension system according to claim 15, wherein, A second buffer (34) is provided between the second connector (223) and the mating end cap (32).

17. The suspension system of the vehicle according to claim 15 or 16, wherein, The buffer assembly further includes an annular extension (322), and the mating end cap (32) is connected to the first connector (31) through the extension (322) to define a sliding chamber (301); The extension (322) is connected to one of the mating end cap (32) and the first connector (31), or the extension (322) is an integral part of one of the mating end cap (32) and the first connector (31).

18. The vehicle suspension system according to claim 17, wherein, The first connector (31) includes a first fastener (316) and a first outer sleeve (317); The first fastener (316) is connected to the end of the second mating member (12), and the outer peripheral wall of the first fastener (316) extends beyond the outer peripheral wall of the second mating member (12); the extension (322) and the first outer sleeve (317) are mated. The second connector (223) is connected to the end of the fourth mating member (22), and the outer peripheral wall of the second connector (223) extends beyond the outer peripheral wall of the fourth mating member (22); The first fixing member (316) and the second connecting member (223) are movable relative to each other.

19. The vehicle suspension system according to claim 18, wherein, The first outer sleeve (317) includes a protruding mating portion (311) that protrudes toward the second connector (223); the extension portion (322) is fitted onto the protruding mating portion (311).

20. The suspension system of the vehicle according to any one of claims 13-19, wherein, The first buffer (33) abuts against the first connector (31) and the second connector (223) respectively; or The first buffer (33) abuts against the first connector (31) and the fourth mating member (22).

21. The vehicle suspension system according to claim 20, wherein, The first buffer (33) is at least one of a buffer material layer, a spring, or a metal spring sheet.

22. The suspension system of the vehicle according to any one of claims 4-21, wherein, The buffer component includes: Buffer groove (221); and An extension portion (313) extends into the buffer groove (221) and moves in conjunction with the buffer groove (221).

23. The vehicle suspension system according to claim 22, wherein, One of the buffer groove (221) and the extension portion (313) is provided in the second mating member (12), and the other of the buffer groove (221) and the extension portion (313) is provided in the fourth mating member (22); the extension portion (313) and the buffer groove (221) are sealed together.

24. The vehicle suspension system according to claim 23, wherein, The buffer assembly further includes a mating end cap (32), which is connected to a first connecting member (31) disposed on the second mating member (12); The end of the fourth mating component (22) is provided with a second connecting component (223); The buffer assembly further includes a third buffer (35) located between the second connector (223) and the mating end cap (32).

25. The vehicle suspension system according to claim 23 further includes a sealing ring (37) that is overlaid on the extension (313).

26. A vehicle comprising a suspension system according to any one of claims 1-25.

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