A shock absorber assembly, a suspension system, and a vehicle

Abstract

The embodiment of the present application provides a shock absorber assembly, a suspension system and a vehicle, the shock absorber assembly comprising: a shell; a piston shaft, the piston shaft being movably arranged in the shell; a driving member, the driving member comprising a driving shaft, the driving shaft being arranged in a different shaft with the piston shaft, the driving shaft being rotatably arranged in the shell; a transmission member, the transmission member being arranged in transmission with the driving shaft, the transmission member also being arranged in transmission with the piston shaft, the transmission member being used for converting the rotary motion output by the driving shaft into the linear motion of the piston shaft. Through the transmission connection of the transmission member with the piston shaft and the transmission member with the driving shaft, the embodiment of the present application can make the piston shaft and the driving shaft stably transmit, and is favorable for improving the damping performance of the shock absorber assembly.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a shock absorber assembly, a suspension system, and a vehicle. Background Technology

[0002] The suspension system is the transmission device located between the vehicle body and the wheels, playing a crucial role in improving ride comfort. A suspension system typically includes a shock absorber assembly, which dampes the vertical movement of the suspension system, allowing the vehicle to ride smoothly and thus improving comfort. However, as people's demands for vehicle comfort continue to increase, existing shock absorber assemblies have proven inadequate in terms of damping performance, leaving significant room for improvement. Summary of the Invention

[0003] This application aims to provide a shock absorber assembly, suspension system, and vehicle to address the problem of poor performance of existing shock absorber assemblies.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] In a first aspect, this application discloses a shock absorber assembly, comprising:

[0006] case;

[0007] A piston shaft, which is movably disposed within the housing;

[0008] A driving component, the driving component including a driving shaft, the driving shaft being disposed off-axis from the piston shaft;

[0009] A transmission component is configured to drive the drive shaft and also to drive the piston shaft. The transmission component is used to convert the rotational motion output by the drive shaft into the linear motion of the piston shaft.

[0010] Optionally, the drive shaft is arranged parallel to the piston shaft.

[0011] Optionally, the piston shaft is provided with a rack, and the drive shaft is provided with a worm gear;

[0012] The transmission component is connected to the rack and the worm gear respectively.

[0013] Optionally, the transmission component includes: a gear and a worm gear connected to each other;

[0014] The gear meshes with the rack, and the worm gear meshes with the worm. Optionally, the transmission component further includes a transmission shaft, which is rotatably connected to the housing and is arranged at an angle to the piston shaft;

[0015] The gear is located at one end of the drive shaft near the piston shaft;

[0016] The worm gear is located at one end of the transmission shaft near the drive shaft.

[0017] Optionally, the angle between the drive shaft and the piston shaft is α, satisfying α < 90°.

[0018] Optionally, the piston shaft extends in a first direction, and the rack is provided in two sets, with the two sets of racks spaced apart along the first direction on the piston shaft;

[0019] The worm gear is provided in two sets, and the two sets of worm gears are respectively located at both ends of the drive shaft along the first direction;

[0020] The transmission components are provided in two sets, which are arranged opposite to each other along the first direction, and the gears and worm gears of one set of transmission components mesh with the corresponding set of racks and worm gears.

[0021] Optionally, the rack is a helical rack, the gear is a helical gear, and the helical gear meshes with the helical rack.

[0022] Optionally, the rack and the piston shaft are integrally formed.

[0023] Optionally, the worm gear and the drive shaft are integrally formed.

[0024] Optionally, the piston shaft extends in a first direction, and at least a portion of the piston shaft protrudes from the housing along the first direction. The shock absorber assembly further includes a guide seat and a guide tray.

[0025] The guide tray is disposed at one end of the piston shaft located inside the housing and is slidably connected to the housing;

[0026] The guide seat is slidably connected to the piston shaft and fixedly connected to the housing;

[0027] The guide tray and at least a portion of the housing enclose a first chamber, and the guide seat, the guide tray, the transmission member, and at least a portion of the housing enclose a second chamber, the second chamber and the first chamber being used to contain a lubricating medium;

[0028] The guide tray is equipped with an on / off valve, which controls the flow of the lubricating medium from the first chamber to the second chamber, or from the second chamber to the first chamber, to provide resistance opposite to the direction of piston shaft movement.

[0029] Optionally, the on / off valve includes: a first on / off valve and a second on / off valve;

[0030] The first and second opening / closing valves are symmetrically arranged along the center of the guide tray. When the first opening / closing valve is open, the lubricating medium flows from the first chamber to the second chamber. When the second opening / closing valve is open, the lubricating medium flows from the second chamber to the first chamber.

[0031] Secondly, this application also discloses a suspension system applied to a vehicle, the vehicle including a body and wheels, the suspension system including a shock absorber assembly as described in any of the above claims, the housing for connection to the body, and the piston shaft for connection to the wheels.

[0032] Optionally, the piston shaft extends in a first direction, and at least a portion of the piston shaft protrudes from the housing along the first direction;

[0033] The housing and the piston shaft are respectively provided with a first mounting member and a second mounting member at their opposite ends. The first mounting member is used to fix the housing to the vehicle body, and the second mounting member is used to fix the piston shaft to the wheel.

[0034] Thirdly, this application also discloses a vehicle that includes the aforementioned suspension system.

[0035] In this embodiment, the vibration damper assembly includes: a housing; a piston shaft movably disposed within the housing; a drive member, including a drive shaft disposed opposite to the piston shaft and rotatably disposed within the housing; and a transmission member, which is driven by the drive shaft and also driven by the piston shaft. The transmission member converts the rotational motion output by the drive shaft into linear motion of the piston shaft. This embodiment, through the transmission connection between the transmission member and the piston shaft, and between the transmission member and the drive shaft, enables stable transmission between the piston shaft and the drive shaft, thereby improving the vibration damping performance of the vibration damper assembly.

[0036] Additional aspects and advantages of the invention 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 the invention. Attached Figure Description

[0037] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0038] Figure 1 This is one of the structural schematic diagrams of a vibration damper assembly provided in the embodiments of this application;

[0039] Figure 2 This is a second schematic diagram of a shock absorber assembly provided in the embodiments of this application;

[0040] Figure 3 This is the third schematic diagram of a shock absorber assembly provided in the embodiments of this application;

[0041] Figure 4 yes Figure 2 A magnified view of a portion of position A in the middle;

[0042] Figure 5 This is a partial assembly diagram of the rack and gear of a shock absorber assembly provided in an embodiment of this application;

[0043] Figure 6 This is a partial assembly diagram of the piston shaft, drive shaft, and transmission components of a shock absorber assembly provided in an embodiment of this application.

[0044] Reference numerals: 1. Housing, 11. First housing, 12. Second housing, 13. Third housing, 14. First mounting component, 2. Vibration damping assembly, 21. Piston shaft, 211. Rack, 22. Guide seat, 23. Guide tray, 231. On / off valve, 24. First chamber, 25. Second chamber, 26. Second mounting component, 3. Drive component, 31. Drive shaft, 311. Worm gear, 32. Rotor, 321. Coil winding, 33. Stator, 331. Permanent magnet, 4. Transmission component, 41. Gear, 42. Worm gear, 43. Transmission shaft, X. First direction. Detailed Implementation

[0045] Embodiments of the present invention will now be described in detail. Examples of these embodiments 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 the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0046] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0047] In the description of this invention, 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" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] This application provides a vibration damper assembly, which will be described in detail below with reference to the accompanying drawings.

[0050] Reference Figures 1 to 3 The diagram shows a structural schematic of a shock absorber assembly provided in an embodiment of this application. (Refer to...) Figure 4 , showed Figure 2 A magnified view of the area at position A in the middle, refer to... Figure 5 This diagram illustrates a partial assembly schematic of the rack and gear in a shock absorber assembly according to an embodiment of this application. (Refer to...) Figure 6 This diagram illustrates a partial assembly schematic of the piston shaft, drive shaft, and transmission components of a shock absorber assembly provided in this application embodiment.

[0051] like Figures 1 to 3As shown, this application provides a vibration damper assembly, including: a housing 1; a piston shaft 21, movably disposed within the housing 1; a drive member 3, including a drive shaft 31, which is coaxially disposed with respect to the piston shaft 21 and rotatably disposed within the housing 1; and a transmission member 4, which is driven by the drive shaft 31 and also driven by the piston shaft 21. The transmission member 4 is used to convert the rotational motion output by the drive shaft 31 into linear motion of the piston shaft 21. In this embodiment, the transmission connection between the transmission member 4 and the piston shaft 21, and between the transmission member 4 and the drive shaft 31, enables stable transmission between the piston shaft 21 and the drive shaft 31, which is beneficial for improving the vibration damping performance of the vibration damper assembly.

[0052] It should be noted that the drive shaft 31 and the piston shaft 21 can be arranged parallel, perpendicular, or at an angle; no limitation is made here, and those skilled in the art can adjust them according to actual needs. It is understood that when the drive shaft 31 and the piston shaft 21 are arranged parallel, the overall size of the shock absorber assembly can be reduced, thereby reducing the space occupied in the vehicle.

[0053] In some optional embodiments of this application, the piston shaft 21 is provided with a rack 211, the drive shaft 31 is provided with a worm 311, and the transmission component 4 is connected to the rack 211 and the worm 311 respectively. Specifically, the transmission component 4 includes a gear 41 and a worm wheel 42 connected to each other; the gear 41 meshes with the rack 211, and the worm wheel 42 meshes with the worm 311.

[0054] In this embodiment, a transmission component 4 is provided, comprising a gear 41 and a worm gear 42 connected to each other. The gear 41 meshes with the rack 211 of the piston shaft 21, and the worm gear 42 meshes with the worm 311 of the drive shaft 31. Thus, when the shock absorber assembly is installed between the vehicle body and the wheels (i.e., the housing 1 is connected to the vehicle body and the piston shaft 21 is connected to the wheels), when the suspension system bounces upward (i.e., the distance between the vehicle body and the wheels decreases), the drive component 3 drives the transmission component 4 to rotate forward, causing the piston shaft 21 to move downward relative to the housing 1, thereby suppressing further upward bounce of the suspension system. When the suspension system bounces downward (i.e., the distance between the vehicle body and the wheels increases), the drive component 3 drives the transmission component 4 to rotate in reverse, causing the piston shaft 21 to move upward relative to the housing 1, thereby suppressing further downward bounce of the suspension system. More importantly, the meshing connection between gear 41 and rack 211, and worm gear 42 and worm 311, can not only improve the transmission accuracy between transmission component 4 and piston shaft 21 and drive shaft 31, thereby improving transmission efficiency, but also improve the transmission stability between transmission component 4 and piston shaft 21 and drive shaft 31, which is conducive to improving the working reliability of the shock absorber assembly.

[0055] It should be noted that shock absorber assemblies are typically designed to suppress vertical movement in the suspension system. Therefore, in this embodiment, the first direction X refers to the vertical direction, which is also the direction of extension of the piston shaft 21. In this embodiment, forward rotation refers to rotation in either a clockwise or counterclockwise direction, and reverse rotation refers to rotation in either a clockwise or counterclockwise direction. This application does not limit the specific direction of forward and reverse rotation; those skilled in the art can adjust it as needed.

[0056] In specific applications, the vibration damper assembly in this embodiment further includes a vibration damping component 2, and the piston shaft 21 is a component of the vibration damping component 2. At least a portion of the vibration damping component 2, the driving component 3, and the transmission component 4 are disposed within the housing 1. In one embodiment, the housing 1 includes a first housing 11, a second housing 12, and a third housing 13, with the first housing 11 and the third housing 13 spaced apart. The second housing 12 is disposed between the first housing 11 and the third housing 13 and is connected to both the first housing 11 and the third housing 13. The first housing 11 accommodates at least a portion of the vibration damping component 2, the second housing 12 accommodates at least a portion of the transmission component 4, and the third housing 13 accommodates at least a portion of the driving component 3. Furthermore, during the manufacturing process of the housing 1, the first housing 11, the second housing 12, and the third housing 13 can be either separately formed or integrally formed; this is not limited, and those skilled in the art can choose according to actual needs.

[0057] Specifically, such as Figure 3 As shown, the transmission component 4 also includes a transmission shaft 43, which is rotatably connected to the housing 1 and is set at an angle to the piston shaft 21; a gear 41 is disposed at one end of the transmission shaft 43 near the piston shaft 21; and a worm gear 42 is disposed at one end of the transmission shaft 43 near the drive shaft 31.

[0058] In this embodiment, a drive shaft 43 is provided, with gear 41 and worm gear 42 respectively located at both ends of the drive shaft 43. Thus, when the drive unit 3 is activated, the drive shaft 31 drives the worm gear 42 to rotate, which in turn drives the gear 41 to rotate synchronously. Through the meshing of the gear 41 and rack 211, the rotational motion of the drive shaft 31 can be converted into the movement of the piston shaft 21 along the first direction X. Figure 6As shown, when the suspension system bounces upward, i.e., when the distance between the vehicle body and the wheels decreases, the drive component 3 is activated. The drive shaft 31 drives the worm gear 42 to rotate forward. The gear 41 at the other end of the transmission shaft 43 rotates forward synchronously and drives the rack 211 to move downward, thus preventing the piston shaft 21 from moving downward relative to the housing 1, thereby suppressing the continued upward bounce of the suspension system. When the suspension system bounces downward, i.e., when the distance between the vehicle body and the wheels increases, the drive component 3 is activated. The drive shaft 31 drives the worm gear 42 to rotate in reverse. The gear 41 at the other end of the transmission shaft 43 rotates in reverse synchronously and drives the rack 211 to move upward, thus preventing the piston shaft 21 from moving upward relative to the housing 1, thereby suppressing the continued downward bounce of the suspension system.

[0059] It should be noted that, in order to enable the drive shaft 43 to be rotatably connected to the housing 1, that is, to enable the drive shaft 43 to be rotatably connected to the second housing 12, the transmission component 4 typically also includes a bearing, which is sleeved on the drive shaft 43 and fixedly connected to the second housing 12. Specifically, the inner ring of the bearing is fixedly connected to the drive shaft 43, and the outer ring of the bearing is fixedly connected to the second housing 12, so that the drive shaft 43 can rotate relative to the second housing 12. In one embodiment, the transmission component 4 is provided with a bearing.

[0060] In some alternative embodiments of this application, such as Figure 5 As shown, the angle between the transmission shaft 43 and the piston shaft 21 is α, which satisfies α < 90°, meaning the entire transmission component 4 is inclined. Thus, compared to the case where the transmission component 4 is horizontally positioned, when the transmission component 4 is inclined, the first housing 11 accommodating the vibration damping assembly 2 and the third housing 13 accommodating the drive component 3 can be as close as possible, effectively reducing the overall space occupied by the vibrator, which is beneficial for miniaturization of the vibration damper assembly and improves its versatility.

[0061] It should be noted that the specific value of the included angle α between the transmission shaft 43 and the piston shaft 21 is not limited in the embodiments of this application, and those skilled in the art can adjust it according to actual needs. For example, the included angle α can be 85°, 70°, 60°, 35° or other angles.

[0062] In some optional embodiments of this application, the piston shaft 21 extends in the first direction X, and two sets of racks 211 are provided, which are spaced apart along the first direction X on the piston shaft 21; two sets of worms 311 are provided, which are respectively provided at both ends of the drive shaft 31 along the first direction X; two sets of transmission members 4 are provided, which are arranged opposite to each other along the first direction X, and the gears 41 and worm wheels 42 of one set of transmission members 4 mesh with the corresponding set of racks 211 and worm wheels 42.

[0063] In this embodiment, two sets of transmission components 4 are provided, which are arranged opposite each other along the first direction X. The piston shaft 21 and drive shaft 31 are respectively provided with two sets of racks 211 and two sets of worm gears 311. Therefore, compared to only one set of transmission components 4, the two sets of transmission components 4 can distribute the force during suspension system vibration, thereby reducing the wear of the transmission components 4 and preventing abnormal noise from the shock absorber assembly. This not only helps to improve the service life of the shock absorber assembly but also improves vehicle comfort.

[0064] In some alternative embodiments of this application, such as Figure 5 As shown, rack 211 is a helical rack, and gear 41 is a helical gear, which meshes with the helical rack. Compared to the single-tooth contact meshing of spur gears and racks, helical gears and racks can achieve multi-tooth contact meshing, thereby increasing the meshing contact area and improving the load torque, which is beneficial to improving the transmission reliability between piston shaft 21 and transmission component 4. In addition, compared to spur gears and racks, helical gears and racks produce less noise when meshing, which is beneficial to improving vehicle comfort.

[0065] It should be noted that when two sets of racks 211 are provided, and both sets of racks 211 are helical racks, the inclination direction of the two sets of racks is the same. In practical applications, in order to obtain better vibration reduction performance, gears 41 and racks 211 can be made of alloy structural steel. Alloy structural steel refers to steel alloy steel containing one or more alloying elements in a certain amount. This material is readily available and has strong performance, with high torque transmission capacity, thereby improving the adjustment margin of the vibration damper assembly.

[0066] In some optional embodiments of this application, the drive component 3 is a permanent magnet motor. Because permanent magnet motors have a simple structure, small size, and light weight, the overall space occupied by the vibrator can be further reduced, which is beneficial for the miniaturization of the vibration damper assembly.

[0067] In the embodiments of this application, such as Figure 2As shown, the permanent magnet motor also includes a stator 33 and a rotor 32. The drive shaft 31, stator 33, and rotor 32 are coaxially arranged. The drive shaft 31 is rotatably connected to the third housing 13. The rotor 32 is fixedly sleeved on the drive shaft 31. The stator 33 is fixedly connected inside the third housing 13 and surrounds the rotor 32. An air gap is provided between the stator 33 and the rotor 32. Specifically, the rotor 32 includes a coil winding 321, which is located on the side of the rotor 32 near the stator 33. The stator 33 includes a permanent magnet 331, which is located on the side of the stator 33 near the rotor 32. Thus, when the coil winding 321 is energized, an alternating magnetic field is generated around the coil winding 321. Through the interaction between the alternating magnetic field and the magnetic field generated by the permanent magnet 331, the drive shaft 31 can be rotated. The rotational speed and direction of the permanent magnet motor can be controlled by changing the frequency and phase of the alternating power supply.

[0068] In practical applications, to enable the drive shaft 31 to be rotatably connected to the third housing 13, the permanent magnet motor typically also includes a bearing. The bearing is sleeved on the drive shaft 31 and fixedly connected to the third housing 13. Specifically, the inner ring of the bearing is fixedly connected to the drive shaft 31, and the outer ring of the bearing is fixedly connected to the third housing 13, so that the drive shaft 31 can rotate relative to the third housing 13. In one embodiment, the permanent magnet motor also includes two bearings, which are spaced apart along a first direction X in the third housing 13.

[0069] It should be noted that the shock absorber assembly in this application embodiment also includes a permanent magnet motor controller. The permanent magnet motor controller is electrically connected to the vehicle's central controller. The central controller outputs control signals to the permanent magnet motor controller to control the frequency and phase of the alternating power supply, that is, the magnitude and direction of the current in the coil winding 321, thereby changing the rotational speed and direction of the permanent magnet motor.

[0070] In practical applications, the shock absorber assembly of this embodiment can also lift the vehicle body to avoid obstacles on the road and prevent damage caused by collisions between the vehicle body and obstacles. Specifically, when the vehicle encounters an obstacle, the vehicle's radar camera can measure the height of the obstacle. The vehicle's central controller calculates the required lifting height of the suspension system based on the obstacle's height and outputs a control signal to the permanent magnet motor controller to control the magnitude and direction of the current in the coil winding 321. Under the interaction of the alternating magnetic field generated by the coil winding 321 and the magnetic field generated by the permanent magnet 331, the drive shaft 31 drives the transmission component 4 to reverse and drive the piston shaft 21 to move downward relative to the first housing 11. Since the end of the piston shaft 21 near the wheel is fixedly connected to the wheel, it can provide a reverse force, thereby lifting the vehicle body.

[0071] Similarly, the shock absorber assembly of this application embodiment can also lower the vehicle body, thereby reducing the vehicle's attitude. Specifically, when it is necessary to lower the vehicle body, the vehicle's central controller calculates the required lowering height of the suspension system and outputs a control signal to the permanent magnet motor controller to control the magnitude and direction of the current in the coil winding 321. Under the interaction of the alternating magnetic field generated by the coil winding 321 and the magnetic field generated by the permanent magnet 331, the drive shaft 31 drives the transmission component 4 to rotate clockwise and drives the piston shaft 21 to move upward relative to the first housing 11. Since the end of the piston shaft 21 near the wheel is fixedly connected to the wheel, it can provide a reverse force, allowing the vehicle body to lower.

[0072] In some optional embodiments of this application, the rack 211 and piston shaft 21 are integrally formed, and the worm 311 and drive shaft 31 are integrally formed. This can improve the overall structural strength of the rack 211 and piston shaft 21, and the worm 311 and drive shaft 31, which is beneficial to improving the service life of the shock absorber assembly.

[0073] In some alternative embodiments of this application, such as Figure 2 and Figure 4 As shown, the piston shaft 21 extends in the first direction X. At least a portion of the piston shaft 21 protrudes from the housing 1 along the first direction X. The damping component 2 of the damper assembly further includes: a guide seat 22 and a guide tray 23. The guide tray 23 is disposed at one end of the piston shaft 21 located inside the housing 1 and is slidably connected to the housing 1. The guide seat 22 is slidably connected to the piston shaft 21 and fixedly connected to the housing 1. The guide tray 23 and at least a portion of the housing 1 enclose a first chamber 24. The guide seat 22, the guide tray 23, the transmission component 4, and at least a portion of the housing 1 enclose a second chamber 25. The second chamber 25 and the first chamber 24 are used to contain lubricating medium. The guide tray 23 is provided with an on / off valve 231. The on / off valve 231 is used to control the lubricating medium to flow from the first chamber 24 to the second chamber 25, or from the second chamber 25 to the first chamber 24, so as to provide resistance opposite to the movement direction of the piston shaft 21.

[0074] In this embodiment, since a first chamber 24 and a second chamber 25 are provided that are independent of each other, and a guide tray 23 located between the first chamber 24 and the second chamber 25 is provided with an on / off valve 231, the on / off valve 231 can control the flow of lubricating medium from the first chamber 24 to the second chamber 25, or from the second chamber 25 to the first chamber 24, thereby providing resistance opposite to the movement direction of the piston shaft 21, and thus suppressing the bounce of the suspension system. That is, the shock absorber assembly of this embodiment also has the function of hydraulic damping. In this way, when the drive component 3 fails, the shock absorber assembly can also achieve damping, which is beneficial to improving the working stability of the shock absorber assembly. In addition, when two sets of racks 211 and two sets of transmission components 4 are provided, at least a portion of one set of racks 211 and transmission components 4 can be located in the second chamber 25. In this way, the meshing of the gear 41 and the rack 211 can play a lubricating role, thereby reducing wear and improving the service life of the shock absorber assembly.

[0075] It should be noted that, to prevent lubricating medium from entering the drive unit 3 through the gap between the drive shaft 43 and the second housing 12 of the transmission component 4, a sealing ring can usually be provided between the drive shaft 43 and the second housing 12 to make the second chamber 25 a closed chamber. Furthermore, in a specific embodiment, the guide tray 23 includes a first body and a sealing ring. The first body is fixedly connected to the end of the piston shaft 21. A first annular groove is provided on the periphery of the first body, and the sealing ring is disposed within the first annular groove to achieve a sealed connection between the body and the first housing 11. The guide seat 22 includes a second body and a guide ring. The second body is sleeved on the piston shaft 21 and sealed to the first housing 11. A limiting protrusion is provided on the periphery of the second body. Correspondingly, a limiting groove is provided on the inner wall of the first housing 11, and the limiting protrusion is embedded in the limiting groove to limit the second body. A second annular groove is provided at one end of the second body along the first direction X. The guide ring is embedded in the second annular groove and is interference-fitted with the piston shaft 21 so that the piston shaft 21 can slide relative to the guide seat 22. The guide ring is a rubber ring.

[0076] Specifically, the on / off valve 231 includes a first on / off valve and a second on / off valve. The first and second on / off valves are symmetrically arranged along the center of the guide tray 23. When the first on / off valve is open, the lubricating medium flows from the first chamber 24 to the second chamber 25. When the second on / off valve is open, the lubricating medium flows from the second chamber 25 to the first chamber 24. Because the first and second on / off valves are symmetrically arranged along the center of the guide tray 23, the problem of tilting or deformation of the guide tray 23 due to uneven pressure during long-term use can be avoided, which helps to improve the overall service life of the shock absorber assembly.

[0077] It should be noted that in one embodiment, the first on / off valve is a compression valve, and the second on / off valve is an extension valve. When the suspension system bounces upward, i.e., when the distance between the vehicle body and the wheels decreases, the piston shaft 21 moves upward relative to the first housing 11, increasing the pressure in the first chamber 24. Under the action of this pressure, the lubricating medium pushes open the compression valve, and the lubricating medium enters the second chamber 25 from the first chamber 24 via the compression valve. Because the viscous lubricating medium generates a damping force when passing through the compression valve, it can suppress the continued upward bounce of the suspension system. When the suspension system bounces downward, i.e., when the distance between the vehicle body and the wheels increases, the piston shaft 21 moves downward relative to the first housing 11, increasing the pressure in the second chamber 25. Under the action of this pressure, the lubricating medium pushes open the extension valve, and the lubricating medium enters the first chamber 24 from the second chamber 25 via the extension valve. Because the viscous lubricating medium generates a damping force when passing through the extension valve, it can suppress the continued downward bounce of the suspension system.

[0078] It should be noted that the first and second on / off valves can also be solenoid valves. In this way, variable damping adjustment can be achieved by manually controlling the opening degree of the solenoid valves.

[0079] In summary, the shock absorber assembly provided in this application has at least the following advantages:

[0080] In this embodiment, the vibration damper assembly includes: a housing; a piston shaft movably disposed within the housing; a drive member, including a drive shaft disposed opposite to the piston shaft and rotatably disposed within the housing; and a transmission member, which is driven by the drive shaft and also driven by the piston shaft. The transmission member converts the rotational motion output by the drive shaft into linear motion of the piston shaft. This embodiment, through the transmission connection between the transmission member and the piston shaft, and between the transmission member and the drive shaft, enables stable transmission between the piston shaft and the drive shaft, thereby improving the vibration damping performance of the vibration damper assembly.

[0081] This application also provides a suspension system for a vehicle, which includes a body and wheels. The suspension system includes a shock absorber assembly as described in any of the above embodiments, with a housing 1 for connection to the body and a piston shaft 21 for connection to the wheels. By providing the shock absorber assembly, the vibration of the suspension system can be effectively suppressed, which is beneficial to improving vehicle comfort.

[0082] It should be noted that the "wheel" in this application embodiment refers to a wheel system, including but not limited to tires. Furthermore, in this application embodiment, the structure of the shock absorber assembly is the same as that of the shock absorber assembly in any of the above embodiments, and its beneficial effects are similar, so further details will not be provided here.

[0083] In some optional embodiments of this application, the piston shaft 21 extends in a first direction X, and at least a portion of the piston shaft 21 protrudes from the housing 1 along the first direction; a first mounting member 14 and a second mounting member 26 are respectively provided at the two ends of the housing 1 and the piston shaft 21 that are opposite to each other. The first mounting member 14 is used to fix the connection with the vehicle body, and the second mounting member 26 is used to fix the connection with the wheel.

[0084] In this embodiment, the first mounting member 14 and the second mounting member 26 are provided. The first mounting member 14 is fixedly connected to the vehicle body, and the second mounting member 26 is fixedly connected to the wheel, thus ensuring a reliable connection of the shock absorber assembly. Furthermore, since the first mounting member 14 and the second mounting member 26 are respectively located at opposite ends of the housing 1 and the piston shaft 21, when the suspension system bounces—that is, when the distance between the vehicle body and the wheel changes—the piston shaft 21 can move relative to the housing 1 in a first direction, effectively suppressing further bouncing of the suspension system.

[0085] This application also provides a vehicle that includes the suspension system of any of the above embodiments.

[0086] It should be noted that in this embodiment, the structure of the suspension system is the same as that of the suspension system in any of the above embodiments, and its beneficial effects are similar, so it will not be described in detail here.

[0087] 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 the invention. 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.

[0088] Although embodiments of the invention 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 the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A shock absorber assembly, characterized in that, include: case; A piston shaft is movably disposed within the housing, and the extending direction of the piston shaft is a first direction; A driving component, the driving component including a driving shaft, the driving shaft being disposed off-axis from the piston shaft; A transmission component is configured to drive the drive shaft and is also configured to drive the piston shaft. The transmission component is used to convert the rotational motion output by the drive shaft into the linear motion of the piston shaft. A guide tray, comprising a first body and a sealing ring, wherein the first body is fixedly connected to the end of the piston shaft, and a first annular groove is provided on the periphery of the first body, and the sealing ring is disposed in the first annular groove; The guide seat includes a second body and a guide ring. The second body is sleeved on the piston shaft. A limiting protrusion is provided on the periphery of the second body. A second annular groove is provided at one end of the second body along the first direction. The guide ring is embedded in the second annular groove and is interference-fitted with the piston shaft. The guide seat, the guide tray, the transmission component, and at least a portion of the housing enclose a second chamber for containing a lubricating medium. The piston shaft is provided with a rack, and the drive shaft is provided with a worm gear; The transmission components are respectively connected to the rack and the worm gear transmission; The transmission component includes: a gear and a worm gear connected to each other; The gear meshes with the rack, and the worm gear meshes with the worm. The rack is provided in two sets, and the two sets of racks are spaced apart along the first direction on the piston shaft; The transmission component is provided in two sets, and the two sets of transmission components are arranged opposite to each other along the first direction; at least a portion of the rack and the transmission component in one set are disposed in the second cavity.

2. The shock absorber assembly according to claim 1, characterized in that, The drive shaft is arranged parallel to the piston shaft.

3. The shock absorber assembly according to claim 1, characterized in that, The transmission component also includes a transmission shaft, which is rotatably connected to the housing and is arranged at an angle to the piston shaft; The gear is located at one end of the drive shaft near the piston shaft; The worm gear is located at one end of the transmission shaft near the drive shaft.

4. The shock absorber assembly according to claim 3, characterized in that, The angle between the drive shaft and the piston shaft is α, which satisfies α < 90°.

5. The shock absorber assembly according to claim 1, characterized in that, The worm gear is provided in two sets, and the two sets of worm gears are respectively located at both ends of the drive shaft along the first direction; The gears and worm gears of one set of transmission components mesh with a corresponding set of racks and worm gears.

6. The shock absorber assembly according to claim 1, characterized in that, The rack is a helical rack, the gear is a helical gear, and the helical gear meshes with the helical rack.

7. The shock absorber assembly according to claim 1, characterized in that, The rack and the piston shaft are integrally formed.

8. The shock absorber assembly according to claim 1, characterized in that, The worm gear and the drive shaft are integrally formed.

9. The shock absorber assembly according to claim 1, characterized in that, At least a portion of the piston shaft protrudes from the housing along the first direction; The guide tray is disposed at one end of the piston shaft located inside the housing and is slidably connected to the housing; The guide seat is slidably connected to the piston shaft and fixedly connected to the housing; The guide tray and at least a portion of the housing enclose a first chamber for containing a lubricating medium; The guide tray is equipped with an on / off valve, which controls the flow of the lubricating medium from the first chamber to the second chamber, or from the second chamber to the first chamber, to provide resistance opposite to the direction of piston shaft movement.

10. The shock absorber assembly according to claim 9, characterized in that, The on / off valve includes: a first on / off valve and a second on / off valve. The first and second opening / closing valves are symmetrically arranged along the center of the guide tray. When the first opening / closing valve is open, the lubricating medium flows from the first chamber to the second chamber. When the second opening / closing valve is open, the lubricating medium flows from the second chamber to the first chamber.

11. A suspension system applied to a vehicle, said vehicle comprising a body and wheels, characterized in that, The suspension system includes a shock absorber assembly as described in any one of claims 1-10, the housing being used for connection to the vehicle body, and the piston shaft being used for connection to the wheel.

12. The suspension system according to claim 11, characterized in that, The piston shaft extends in a first direction, and at least a portion of the piston shaft protrudes from the housing along the first direction. The housing and the piston shaft are respectively provided with a first mounting member and a second mounting member at their opposite ends. The first mounting member is used to fix the housing to the vehicle body, and the second mounting member is used to fix the piston shaft to the wheel.

13. A vehicle, characterized in that, The vehicle includes the suspension system as described in claim 11 or 12.

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