Shock absorber assembly, suspension system and vehicle

Abstract

The embodiment of the invention provides a shock absorber assembly, a suspension system and a vehicle. The shock absorber assembly comprises a shell, a connecting piece and a connecting piece, the piston shaft is movably arranged in the shell; the driving part comprises a driving shaft, the driving shaft and the piston shaft are arranged in a non-coaxial mode, and the driving shaft is rotatably arranged in the shell; and the transmission part and the driving shaft are arranged in a transmission mode, the transmission part and the piston shaft are further arranged in a transmission mode, and the transmission part is used for converting rotary motion output by the driving shaft into linear motion of the piston shaft. According to the shock absorber assembly, through transmission connection between the transmission part and the piston shaft and transmission connection between the transmission part and the driving shaft, stable transmission between the piston shaft and the driving shaft can be achieved, and the shock absorption performance of the shock absorber assembly can be improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a shock absorber assembly, a suspension system and a vehicle. Background Art

[0002] The suspension system is a transmission device set between the vehicle body and the wheels, which plays a vital role in improving comfort. The suspension system usually includes a shock absorber assembly, which is used to suppress the up and down bouncing of the suspension system, so that the vehicle can run smoothly, which is conducive to improving the comfort of the vehicle. As people's requirements for vehicle comfort are getting higher and higher, the existing shock absorber assembly has poor vibration reduction performance, and there is a lot of room for improvement. Summary of the invention

[0003] The present application aims to provide a shock absorber assembly, a suspension system and a vehicle to solve the problem of poor performance of the existing shock absorber assembly.

[0004] In order to solve the above technical problems, this application is implemented as follows:

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

[0006] case;

[0007] a piston shaft, the piston shaft being movably disposed in the housing;

[0008] A driving member, the driving member comprising a driving shaft, the driving shaft and the piston shaft are arranged off-axis;

[0009] A transmission member is arranged in transmission with the drive shaft, and the transmission member is also arranged in transmission with the piston shaft, and the transmission member is used for converting 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;

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

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

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

[0015] The gear is arranged at one end of the transmission shaft close to the piston shaft;

[0016] The worm gear is arranged at one end of the transmission shaft close to the driving shaft.

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

[0018] Optionally, the piston shaft extends in a first direction, and two groups of racks are provided, and the two groups of racks are spaced apart and arranged on the piston shaft along the first direction;

[0019] The worm gears are provided in two groups, and the two groups of worm gears are respectively provided at two ends of the driving shaft along the first direction;

[0020] The transmission members are provided in two groups, and the two groups of the transmission members are arranged opposite to each other along the first direction, and the gears and the worm wheels of one group of the transmission members are respectively meshed with the corresponding group of the racks and the worm wheels.

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

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

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

[0024] Optionally, the extending direction of the piston shaft is a first direction, at least a portion of the piston shaft protrudes from the housing along the first direction, and the shock absorber assembly further includes: a guide seat and a guide tray;

[0025] The guide tray is arranged at one end of the piston shaft located in 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 part of the shell are enclosed to form a first chamber, and the guide seat, the guide tray, the transmission member and at least part of the shell are enclosed to form a second chamber, and the second chamber and the first chamber are used to contain a lubricating medium;

[0028] The guide tray is provided with an on-off valve, which is used to control the lubricating medium to flow out from the first chamber to the second chamber, or from the second chamber to the first chamber, so as to provide resistance in the opposite direction of movement of the piston shaft.

[0029] Optionally, the on-off valve comprises: a first on-off valve and a second on-off valve;

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

[0031] In a second aspect, the present application also discloses a suspension system applied to a vehicle, wherein the vehicle includes a body and wheels, the suspension system includes the shock absorber assembly described in any one of the above items, the shell is used to be connected to the body, and the piston shaft is used to be connected to the wheel.

[0032] Optionally, the extending direction of the piston shaft is 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 provided with a first mounting member and a second mounting member at two ends facing away from each other, respectively. The first mounting member is used for being fixedly connected to the vehicle body, and the second mounting member is used for being fixedly connected to the wheel.

[0034] In a third aspect, the present application also discloses a vehicle, which comprises the above-mentioned suspension system.

[0035] In the embodiment of the present application, the shock absorber assembly includes: a housing; a piston shaft, the piston shaft is movably arranged in the housing; a driving member, the driving member includes a driving shaft, the driving shaft is arranged off-axis from the piston shaft, and the driving shaft is rotatably arranged in the housing; a transmission member, the transmission member is arranged for transmission with the driving shaft, and the transmission member is also arranged for transmission with the piston shaft, and the transmission member is used to convert the rotational motion output by the driving shaft into the linear motion of the piston shaft. In the embodiment of the present application, the transmission connection between the transmission member and the piston shaft, and the transmission member and the driving shaft can ensure stable transmission between the piston shaft and the driving shaft, which is beneficial to improving the vibration reduction performance of the shock absorber assembly.

[0036] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0038] Figure 1 It is one of the structural schematic diagrams of a shock absorber assembly provided in an embodiment of the present application;

[0039] Figure 2 This is the second structural schematic diagram of a shock absorber assembly provided in an embodiment of the present application;

[0040] Figure 3 This is a third structural schematic diagram of a shock absorber assembly provided in an embodiment of the present application;

[0041] Figure 4 yes Figure 2 A partial enlarged view of position A in the middle;

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

[0043] Figure 6 It is a partial assembly schematic diagram of a piston shaft, a drive shaft and a transmission member of a shock absorber assembly provided in an embodiment of the present application.

[0044] Figure numerals: 1. Shell, 11. First shell, 12. Second shell, 13. Third shell, 14. First mounting part, 2. Vibration damping assembly, 21. Piston shaft, 211. Rack, 22. Guide seat, 23. Guide tray, 231. Opening and closing valve, 24. First chamber, 25. Second chamber, 26. Second mounting part, 3. Driving part, 31. Driving shaft, 311. Worm, 32. Rotor, 321. Coil winding, 33. Stator, 331. Permanent magnet, 4. Transmission part, 41. Gear, 42. Worm wheel, 43. Transmission shaft, X. First direction. DETAILED DESCRIPTION

[0045] Embodiments of the present invention will be described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. 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. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0046] The term "first" or "second" in the specification and claims of the present application may include one or more of the features explicitly or implicitly. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] An embodiment of the present application provides a shock absorber assembly, and the shock absorber assembly of the present application is described in detail below with reference to the accompanying drawings.

[0050] Reference Figures 1 to 3 , showing a schematic diagram of the structure of a shock absorber assembly provided in an embodiment of the present application, referring to Figure 4 , showing Figure 2 A partial enlarged view of the A position in the middle, refer to Figure 5 , showing a partial assembly diagram of a rack and a gear of a shock absorber assembly provided in an embodiment of the present application, with reference to Figure 6 , showing a partial assembly schematic diagram of a piston shaft, a drive shaft and a transmission member of a shock absorber assembly provided in an embodiment of the present application. , showing a partial assembly schematic diagram of a piston shaft, a drive shaft and a transmission member of a shock absorber assembly provided in an embodiment of the present application.

[0051] like Figures 1 to 3As shown, the present application provides a shock absorber assembly, including: a housing 1; a piston shaft 21, which is movably disposed in the housing 1; a driving member 3, which includes a driving shaft 31, which is eccentrically disposed with the piston shaft 21, and which is rotatably disposed in the housing 1; a transmission member 4, which is arranged for transmission with the driving shaft 31, and which is also arranged for transmission with the piston shaft 21, and which is used to convert the rotational motion output by the driving shaft 31 into the linear motion of the piston shaft 21. The embodiment of the present application can stably transmit the piston shaft 21 and the driving shaft 31 through the transmission connection between the transmission member 4 and the piston shaft 21, and between the transmission member 4 and the driving shaft 31, which is conducive to improving the vibration reduction performance of the shock absorber assembly.

[0052] It should be noted that the drive shaft 31 and the piston shaft 21 can be arranged in parallel, perpendicularly, or at an angle, which is not limited here, and those skilled in the art can adjust according to actual needs. It is understandable that when the drive shaft 31 and the piston shaft 21 are arranged in parallel, the outer dimensions of the shock absorber assembly can be reduced, thereby reducing the space occupied by the vehicle.

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

[0054] In the embodiment of the present application, a transmission member 4 is provided, and the transmission member 4 includes a gear 41 and a worm wheel 42 connected to each other, wherein the gear 41 is meshed with the rack 211 of the piston shaft 21, and the worm wheel 42 is meshed with the worm 311 of the drive shaft 31. In this way, when the shock absorber assembly is installed between the vehicle body and the wheel, that is, the housing 1 is connected to the vehicle body, and the piston shaft 21 is connected to the wheel, when the suspension system jumps up, that is, when the distance between the vehicle body and the wheel decreases, the drive member 3 drives the transmission member 4 to rotate forward and drives the piston shaft 21 to move downward relative to the housing 1, thereby suppressing the suspension system from continuing to jump up. When the suspension system jumps down, that is, when the distance between the vehicle body and the wheel increases, the drive member 3 drives the transmission member 4 to reverse and drives the piston shaft 21 to move upward relative to the housing 1, thereby suppressing the suspension system from continuing to jump down. More importantly, through the meshing connection between the gear 41 and the rack 211, and the worm wheel 42 and the worm 311, not only can the transmission accuracy between the transmission member 4 and the piston shaft 21, and the drive shaft 31 be improved, thereby improving the transmission efficiency; but also the transmission stability between the transmission member 4 and the piston shaft 21, and the drive shaft 31 can be improved, which is beneficial to improving the working reliability of the shock absorber assembly.

[0055] It should be noted that the shock absorber assembly is usually used to suppress the vertical bouncing of the suspension system. Therefore, the first direction X in the embodiment of the present application refers to the vertical direction, that is, the extension direction of the piston shaft 21. The forward rotation in the embodiment of the present application refers to rotation in one of the clockwise direction or the counterclockwise direction, and the reverse rotation refers to rotation in the other of the clockwise direction or the counterclockwise direction. The present application does not limit the specific rotation direction of the forward rotation and the reverse rotation, and those skilled in the art can adjust it as needed.

[0056] In a specific application, the shock absorber assembly in the embodiment of the present application further includes a shock absorbing assembly 2, and the piston shaft 21 is a component of the shock absorbing assembly 2. At least part of the shock absorbing assembly 2, the driving member 3 and the transmission member 4 of the present application are arranged in the housing 1. In one embodiment, the housing 1 includes a first housing 11, a second housing 12 and a third housing 13, the first housing 11 and the third housing 13 are arranged at intervals, and the second housing 12 is arranged between the first housing 11 and the third housing 13 and is connected to the first housing 11 and the third housing 13 respectively. Among them, the first housing 11 is used to accommodate at least part of the shock absorbing assembly 2, the second housing 12 is used to accommodate at least part of the transmission member 4, and the third housing 13 is used to accommodate at least part of the driving member 3. In addition, during the manufacturing process of the housing 1, the first housing 11, the second housing 12 and the third housing 13 can be a split molding structure or an integrated molding structure, which is not limited here, and those skilled in the art can choose according to actual needs.

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

[0058] In the embodiment of the present application, since a transmission shaft 43 is provided, the gear 41 and the worm gear 42 are respectively provided at both ends of the transmission shaft 43. Thus, when the driving member 3 is started, the driving shaft 31 drives the worm gear 42 to rotate and drives the gear 41 to rotate synchronously, and the rotational motion of the driving shaft 31 can be converted into the movement of the piston shaft 21 along the first direction X through the meshing of the gear 41 and the rack 211. Figure 6As shown, when the suspension system jumps up, that is, when the distance between the vehicle body and the wheel decreases, the driving member 3 is started, the driving shaft 31 drives the worm gear 42 to rotate forward, and the gear 41 at the other end of the transmission shaft 43 rotates forward synchronously and drives the rack 211 to move downward, even if the piston shaft 21 moves downward relative to the housing 1, thereby suppressing the suspension system from continuing to jump up. When the suspension system jumps down, that is, when the distance between the vehicle body and the wheel increases, the driving member 3 is started, the driving shaft 31 drives the worm gear 42 to rotate reversely, and the gear 41 at the other end of the transmission shaft 43 rotates reversely synchronously and drives the rack 211 to move upward, even if the piston shaft 21 moves upward relative to the housing 1, thereby suppressing the suspension system from continuing to jump down.

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

[0060] In some optional embodiments of the present application, such as Figure 5 As shown, the angle between the transmission shaft 43 and the piston shaft 21 is a, which satisfies a<90°, that is, the entire transmission member 4 is tilted. In this way, compared with the case where the transmission member 4 is horizontally arranged, when the transmission member 4 is tilted, the first housing 11 accommodating the vibration reduction assembly 2 and the third housing 13 accommodating the driving member 3 can be as close as possible, thereby effectively reducing the space occupied by the vibrator as a whole, which is conducive to the miniaturization of the vibration reduction assembly and improving the versatility of the vibration reduction assembly.

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

[0062] In some optional embodiments of the present application, the extension direction of the piston shaft 21 is the first direction X, two groups of racks 211 are provided, and the two groups of racks 211 are arranged on the piston shaft 21 at intervals along the first direction X; two groups of worms 311 are provided, and the two groups of worms 311 are respectively arranged at both ends of the drive shaft 31 along the first direction X; two groups of transmission members 4 are provided, and the two groups of transmission members 4 are arranged opposite to each other along the first direction X, and the gear 41 and the worm wheel 42 of one group of transmission members 4 are respectively meshed with the corresponding group of racks 211 and the worm wheel 42.

[0063] In the embodiment of the present application, two groups of transmission members 4 are provided, the two groups of transmission members 4 are arranged opposite to each other along the first direction X, and the piston shaft 21 and the drive shaft 31 are respectively provided with two groups of racks 211 and two groups of worms 311. In this way, compared with only one group of transmission members 4, during the bouncing of the suspension system, the two groups of transmission members 4 can disperse the force, thereby reducing the degree of wear of the transmission members 4 and avoiding abnormal noise of the shock absorber assembly, which can not only help to increase the service life of the shock absorber assembly, but also improve the comfort of the vehicle.

[0064] In some optional embodiments of the present application, such as Figure 5 As shown, the rack 211 is a helical rack, the gear 41 is a helical gear, and the helical gear meshes with the helical rack. Compared with the single-tooth contact meshing of the spur gear and the spur rack, the helical gear and the helical rack can achieve multi-tooth contact meshing, thereby increasing the meshing contact area, so that the load torque can be increased, which is beneficial to improving the transmission reliability of the piston shaft 21 and the transmission member 4. In addition, compared with the spur gear and the spur rack, the helical gear and the helical rack have less noise when they mesh with each other, which is beneficial to improving the comfort of the vehicle.

[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 directions of the two sets of racks are consistent. In practical applications, in order to obtain better vibration reduction performance, the gear 41 and the rack 211 can be made of alloy structural steel, which refers to a steel alloy steel material containing one or more certain amounts of alloy elements. This material is easy to obtain and has strong performance, and has a higher torque transmission capacity, thereby improving the adjustment margin of the shock absorber assembly.

[0066] In some optional embodiments of the present application, the driving member 3 is a permanent magnet motor. Since the permanent magnet motor has a simple structure, small size and light weight, the space occupied by the vibrator as a whole can be further reduced, which is conducive to the miniaturization of the shock absorber assembly.

[0067] In the embodiments of the present application, Figure 2As shown, the permanent magnet motor further includes a stator 33 and a rotor 32, and the drive shaft 31, the stator 33 and the rotor 32 are coaxially arranged, wherein 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 to the third housing 13 and is arranged around the circumference of the rotor 32, and an air gap is arranged between the stator 33 and the rotor 32. Specifically, the rotor 32 includes a coil winding 321, the coil winding 321 is arranged on a side of the rotor 32 close to the stator 33, and the stator 33 includes a permanent magnet 331, and the permanent magnet 331 is arranged on a side of the stator 33 close to the rotor 32. In this way, when the coil winding 321 is energized, an alternating magnetic field is generated around the coil winding 321, and the drive shaft 31 can be rotated by the interaction between the alternating magnetic field and the magnetic field generated by the permanent magnet 331. The rotation speed and rotation direction of the permanent magnet motor can be controlled by changing the frequency and phase of the alternating power supply.

[0068] In practical applications, in order to enable the drive shaft 31 to be rotatably connected to the third housing 13, the permanent magnet motor generally further includes a bearing, which 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 further includes two bearings, which are spaced apart in the third housing 13 along the first direction X.

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

[0070] In practical applications, the shock absorber assembly of the embodiment of the present application can also realize the lifting of the vehicle body to avoid obstacles on the road and avoid damage caused by the collision between the vehicle body and the obstacle. Specifically, when the vehicle encounters an obstacle, the radar camera of the vehicle can measure the height of the obstacle, and the central controller of the vehicle calculates the height that the suspension system needs to lift according to the height of the obstacle and outputs a control signal to the permanent magnet motor controller to control the current magnitude and current direction of 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 member 4 to reverse and drives the piston shaft 21 to move downward relative to the first housing 11. Since the end of the piston shaft 21 close to the wheel is fixedly connected to the wheel, a reverse force can be provided to lift the vehicle body.

[0071] Similarly, the shock absorber assembly of the embodiment of the present application can also achieve the descent of the vehicle body, thereby reducing the posture of the vehicle body. Specifically, when the vehicle body needs to be lowered, the central controller of the vehicle calculates the height that the suspension system needs to descend according to the required descent height and outputs a control signal to the permanent magnet motor controller to control the current magnitude and current direction of 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 member 4 to rotate forward and drives the piston shaft 21 to move upward relative to the first housing 11. Since the end of the piston shaft 21 close to the wheel is fixedly connected to the wheel, a reverse force can be provided to enable the vehicle body to be lowered.

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

[0073] In some optional embodiments of the present application, such as Figure 2 and Figure 4 As shown, the extension direction of the piston shaft 21 is the first direction X, and at least a portion of the piston shaft 21 is protruded from the housing 1 along the first direction X. The shock absorbing component 2 of the shock absorber assembly also includes: a guide seat 22 and a guide tray 23; the guide tray 23 is arranged at one end of the piston shaft 21 located in the housing 1 and is slidably connected to the housing 1; the guide seat 22 is slidably connected to the piston shaft 21 and is fixedly connected to the housing 1; the guide tray 23 and at least a portion of the housing 1 are enclosed to form a first chamber 24, and the guide seat 22, the guide tray 23, the transmission member 4 and at least a portion of the housing 1 are enclosed to form a second chamber 25, and the second chamber 25 and the first chamber 24 are used to accommodate lubricating medium; the guide tray 23 is provided with an opening and closing valve 231, and the opening and closing valve 231 is used to control the lubricating medium to flow out from the first chamber 24 to the second chamber 25, or to flow out from the second chamber 25 to the first chamber 24, so as to provide resistance opposite to the moving direction of the piston shaft 21.

[0074] In the embodiment of the present application, since the first chamber 24 and the second chamber 25 are independent of each other, and the guide tray 23 located between the first chamber 24 and the second chamber 25 is provided with an opening and closing valve 231, the opening and closing valve 231 can control the lubricating medium to flow out from the first chamber 24 to the second chamber 25, or flow out from the second chamber 25 to the first chamber 24, thereby providing resistance in the opposite direction of the movement of the piston shaft 21, thereby suppressing the vibration of the suspension system. That is, the shock absorber assembly of the embodiment of the present application also has the function of hydraulic shock absorption. In this way, when the driving member 3 fails, the shock absorber assembly can also achieve shock absorption, which is beneficial to improve the working stability of the shock absorber assembly. In addition, when two sets of racks 211 and two sets of transmission members 4 are provided, at least part of one set of racks 211 and the transmission member 4 can be arranged in the second chamber 25, so that the meshing of the gear 41 and the rack 211 can play a lubricating role, thereby reducing wear and helping to improve the service life of the shock absorber assembly.

[0075] It should be noted that, in order to prevent the lubricating medium from passing through the gap between the transmission shaft 43 of the transmission member 4 and the second housing 12 and entering the interior of the driving member 3, a sealing ring can usually be arranged between the transmission shaft 43 and the second housing 12, so that the second chamber 25 is a closed chamber. In addition, 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 arranged on the circumference of the first body, and the sealing ring is arranged in 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 is sealed with the first housing 11, a limiting protrusion is arranged on the circumference of the second body, and correspondingly, a limiting groove is arranged on the inner wall of the first housing 11, and the limiting protrusion is embedded in the limiting groove to achieve the limiting of the second body. A second annular groove is arranged at one end of the second body along the first direction X, and the guide ring is embedded in the second annular groove and is interference-connected with the piston shaft 21, so that the piston shaft 21 can slide relative to the guide seat 22. Wherein, the guide ring is a rubber ring.

[0076] Specifically, the opening and closing valve 231 includes: a first opening and closing valve and a second opening and closing valve; the first opening and closing valve and the second opening and closing valve are symmetrically arranged along the center of the guide tray 23, and when the first opening and closing valve is opened, the lubricating medium flows out from the first chamber 24 to the second chamber 25, and when the second opening and closing valve is opened, the lubricating medium flows out from the second chamber 25 to the first chamber 24. In this way, since the first opening and closing valve and the second opening and closing valve are symmetrically arranged along the center of the guide tray 23, the problem of the guide tray 23 being tilted or deformed due to uneven pressure during long-term use can be avoided, which is conducive to improving the service life of the entire shock absorber assembly.

[0077] It should be noted that, in one embodiment, the first opening and closing valve is a compression valve, and the second opening and closing valve is an extension valve. When the suspension system jumps up, that is, the distance between the vehicle body and the wheel decreases, the piston shaft 21 moves up relative to the first housing 11, the pressure in the first chamber 24 increases, and the lubricating medium pushes the compression valve open under the action of pressure, and the lubricating medium enters the second chamber 25 from the first chamber 24 through the compression valve. Since the viscous lubricating medium will generate a damping force when passing through the compression valve, the suspension system can be inhibited from continuing to jump up. When the suspension system jumps down, that is, the distance between the vehicle body and the wheel increases, the piston shaft 21 moves down relative to the first housing 11, the pressure in the second chamber 25 increases, and the lubricating medium pushes the extension valve open under the action of pressure, and the lubricating medium enters the first chamber 24 from the second chamber 25 through the extension valve. Since the viscous lubricating medium will generate a damping force when passing through the extension valve, the suspension system can be inhibited from continuing to jump down.

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

[0079] In summary, the shock absorber assembly provided by the embodiment of the present application has at least the following advantages:

[0080] In the embodiment of the present application, the shock absorber assembly includes: a housing; a piston shaft, the piston shaft is movably arranged in the housing; a driving member, the driving member includes a driving shaft, the driving shaft is arranged off-axis from the piston shaft, and the driving shaft is rotatably arranged in the housing; a transmission member, the transmission member is arranged for transmission with the driving shaft, and the transmission member is also arranged for transmission with the piston shaft, and the transmission member is used to convert the rotational motion output by the driving shaft into the linear motion of the piston shaft. In the embodiment of the present application, the transmission connection between the transmission member and the piston shaft, and the transmission member and the driving shaft can ensure stable transmission between the piston shaft and the driving shaft, which is beneficial to improving the vibration reduction performance of the shock absorber assembly.

[0081] The embodiment of the present application also provides a suspension system, which is applied to a vehicle, wherein the vehicle includes a body and wheels, and the suspension system includes a shock absorber assembly of any of the above embodiments, wherein the housing 1 is used to connect with the body, and the piston shaft 21 is used to connect with the wheels. By providing the shock absorber assembly, the vibration of the suspension system can be effectively suppressed, which is beneficial to improving the comfort of the vehicle.

[0082] It should be noted that the wheel in the embodiment of the present application refers to a wheel system, including but not limited to a tire. In addition, in the embodiment of the present application, 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, which will not be described in detail here.

[0083] In some optional embodiments of the present application, the extension direction of the piston shaft 21 is the first direction X, and at least a portion of the piston shaft 21 is protruding from the housing 1 along the first direction; the housing 1 and the piston shaft 21 are provided with a first mounting member 14 and a second mounting member 26 at two ends facing away from each other, respectively, the first mounting member 14 is used to be fixedly connected to the vehicle body, and the second mounting member 26 is used to be fixedly connected to the wheel.

[0084] In the embodiment of the present application, since 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, so that the shock absorber assembly can be reliably connected. In addition, since the first mounting member 14 and the second mounting member 26 are respectively provided at the two ends of the housing 1 and the piston shaft 21 that are away from each other, 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 the first direction, thereby effectively suppressing further bounce of the suspension system.

[0085] An embodiment of the present application further provides a vehicle, the vehicle comprising a suspension system according to any one of the above embodiments.

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

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0088] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A shock absorber assembly, characterized in that: include: case; a piston shaft, the piston shaft being movably disposed in the housing; A driving member, the driving member comprising a driving shaft, the driving shaft and the piston shaft are arranged off-axis; A transmission member is arranged in transmission with the drive shaft, and the transmission member is also arranged in transmission with the piston shaft, and the transmission member is used for converting the rotational motion output by the drive shaft into the linear motion of the piston shaft.

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

3. The shock absorber assembly according to claim 2, characterized in that: The piston shaft is provided with a rack, and the drive shaft is provided with a worm; The transmission member is respectively connected to the rack and the worm.

4. The shock absorber assembly according to claim 3, characterized in that: The transmission member comprises: a gear and a worm gear connected to each other; The gear is meshed with the rack, and the worm wheel is meshed with the worm.

5. The shock absorber assembly according to claim 4, characterized in that: The transmission member further comprises a transmission shaft, which is rotatably connected to the housing and is arranged at an angle with the piston shaft; The gear is arranged at one end of the transmission shaft close to the piston shaft; The worm gear is arranged at one end of the transmission shaft close to the driving shaft.

6. The shock absorber assembly according to claim 5, characterized in that: The included angle between the transmission shaft and the piston shaft is a, satisfying a<90°.

7. The shock absorber assembly according to claim 4, characterized in that: The piston shaft extends in a first direction, and two groups of racks are provided. The two groups of racks are spaced apart and arranged on the piston shaft along the first direction. The worm gears are provided in two groups, and the two groups of worm gears are respectively provided at two ends of the driving shaft along the first direction; The transmission members are provided in two groups, and the two groups of the transmission members are arranged opposite to each other along the first direction, and the gears and the worm wheels of one group of the transmission members are respectively meshed with the corresponding group of the racks and the worm wheels.

8. The shock absorber assembly according to claim 4, characterized in that: The rack is a helical rack, the gear is a helical gear, and the helical gear is meshed with the helical rack.

9. The shock absorber assembly according to claim 3, characterized in that: The rack and the piston shaft are an integrally formed structure.

10. The shock absorber assembly according to claim 3, characterized in that: The worm and the drive shaft are an integrally formed structure.

11. The shock absorber assembly according to claim 1, characterized in that: The extending direction of the piston shaft is a first direction, and at least a portion of the piston shaft is protruded from the housing along the first direction. The shock absorber assembly further includes: a guide seat and a guide tray; The guide tray is arranged at one end of the piston shaft located in 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 part of the shell are enclosed to form a first chamber, and the guide seat, the guide tray, the transmission member and at least part of the shell are enclosed to form a second chamber, and the second chamber and the first chamber are used to contain a lubricating medium; The guide tray is provided with an on-off valve, which is used to control the lubricating medium to flow out from the first chamber to the second chamber, or from the second chamber to the first chamber, so as to provide resistance in the opposite direction of movement of the piston shaft.

12. The shock absorber assembly according to claim 11, characterized in that: The on-off valve comprises: a first on-off valve and a second on-off valve; The first opening and closing valve and the second opening and closing valve are symmetrically arranged along the center of the guide tray. When the first opening and closing valve is opened, the lubricating medium flows out from the first chamber to the second chamber. When the second opening and closing valve is opened, the lubricating medium flows out from the second chamber to the first chamber.

13. A suspension system, applied to a vehicle, the vehicle comprising a vehicle body and wheels, characterized in that: The suspension system comprises the shock absorber assembly according to any one of claims 1 to 12, the housing is used to be connected to the vehicle body, and the piston shaft is used to be connected to the wheel.

14. The suspension system according to claim 13, characterized in that The extending direction of the piston shaft is 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 provided with a first mounting member and a second mounting member at two ends facing away from each other, respectively. The first mounting member is used for being fixedly connected to the vehicle body, and the second mounting member is used for being fixedly connected to the wheel.

15. A vehicle, characterized in that: The vehicle comprises a suspension system as claimed in claim 13 or 14.

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