Vehicle suspension system and vehicle

Abstract

The utility model provides a vehicle suspension system and a vehicle. The vehicle suspension system comprises a driving assembly, a lead screw rotationally connected with a lower swing arm of the vehicle, a shock absorber assembly connected with a vehicle body and a connecting assembly connected with the shock absorber assembly. The end, away from the shock absorber assembly, of the connecting assembly is provided with internal threads. One end of the lead screw is in threaded connection with the internal thread, and the other end of the lead screw is in transmission connection with the driving assembly; the driving assembly is used for driving the lead screw to rotate so as to drive the connecting assembly and the shock absorber assembly to move relative to the lead screw. The height of the vehicle body is actively adjusted, the structure is simple, the occupied space is small, and arrangement is convenient.

Description

Technical Field

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

[0002] The suspension system is a critical component between a vehicle's body and wheels, ensuring ride comfort. Active suspension technology is currently a key research area within this field. Existing technologies typically employ planetary, harmonic, cycloid, or worm gear transmissions for reduction mechanisms. Some systems also require rocker arms and push-pull rods to apply force to the suspension system, adding two additional rods. This creates a complex structure, occupies a large area, and places high demands on layout space. Utility Model Content

[0003] The utility model aims to solve the technical problems of the complex structure of the vehicle suspension system in the prior art and provides a vehicle suspension system and a vehicle.

[0004] In view of the above technical problems, an embodiment of the present utility model provides a vehicle suspension system, comprising a drive assembly, a screw rod rotatably connected to a lower arm of the vehicle, a shock absorber assembly connected to the vehicle body, and a connecting assembly connecting the shock absorber assembly;

[0005] An internal thread is provided at one end of the connecting assembly away from the shock absorber assembly; one end of the screw rod is threadedly connected to the internal thread, and the other end of the screw rod is transmission-connected to the drive assembly; the drive assembly is used to drive the screw rod to rotate, thereby driving the connecting assembly and the shock absorber assembly to move relative to the screw rod.

[0006] Optionally, the shock absorber assembly includes a shock absorber cylinder; the connecting component includes a nut and a connecting cylinder coaxially connected between the nut and the shock absorber cylinder; and the internal thread is provided on the nut.

[0007] Optionally, the vehicle suspension system further includes a guide rod arranged at one end of the shock absorber cylinder close to the connecting cylinder; the guide rod is coaxially arranged with the shock absorber cylinder; a guide groove is provided at one end of the screw rod facing the shock absorber assembly; and the guide rod is slidably inserted in the guide groove.

[0008] Optionally, the shock absorber assembly also includes a shock absorber rod slidably inserted into the shock absorber cylinder, an upper tray mounted on the shock absorber rod, a lower tray mounted on the shock absorber cylinder, and a shock absorber spring connected between the upper tray and the lower tray; the end of the shock absorber cylinder away from the upper tray is connected to the connecting cylinder.

[0009] Optionally, the vehicle suspension system further includes a bearing and a base connected to the vehicle lower arm; one end of the screw rod away from the shock absorber assembly is rotatably connected to the base through the bearing.

[0010] Optionally, a flange is provided at one end of the connecting tube away from the vibration damping tube, and the connecting tube is coaxially fixedly connected to the nut via the flange.

[0011] Optionally, the driving assembly includes a driving member and a transmission assembly; the driving member is connected to the screw rod through the transmission assembly to drive the screw rod to rotate.

[0012] Optionally, the transmission assembly includes a first reduction gear fixedly connected to the driving shaft of the driving member, and a second reduction gear coaxially mounted on the screw rod; the first reduction gear is meshed with the second reduction gear.

[0013] Optionally, the transmission assembly further includes at least one intermediate reduction gear; the first reduction gear is meshedly connected to the second reduction gear via the intermediate reduction gear.

[0014] A vehicle comprises the vehicle suspension system.

[0015] The vehicle suspension system of the utility model includes a drive assembly, a screw rod rotatably connected to the vehicle lower arm, a shock absorber assembly connected to the vehicle body, and a connecting assembly connected to the shock absorber assembly; the connecting assembly is provided with an internal thread at one end away from the shock absorber assembly; one end of the screw rod is threadedly connected to the internal thread, and the other end of the screw rod is transmission-connected to the drive assembly; the drive assembly is used to drive the screw rod to rotate, thereby driving the connecting assembly and the shock absorber assembly to move relative to the screw rod.

[0016] In the vehicle suspension system of the present invention, a connecting component is provided on the shock absorber assembly, and the connecting component is threadedly connected to a screw rod rotatably connected to the lower arm of the vehicle through an internal thread. In this way, the screw rod can be driven to rotate by the driving component, thereby driving the connecting component and the shock absorber assembly to move relative to the screw rod through the rotation of the screw rod, so as to realize the lifting and lowering of the shock absorber assembly, thereby realizing active adjustment of the vehicle body height; the utility model has a simple structure, occupies a small space, and is easy to arrange. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 It is a structural schematic diagram of a vehicle suspension system provided by an embodiment of the present utility model.

[0019] Figure 2 It is a schematic cross-sectional structural diagram of a vehicle suspension system provided by one embodiment of the present utility model.

[0020] Figure 3 It is a partial structural diagram of a vehicle provided in one embodiment of the utility model.

[0021] The reference numerals in the specification are as follows:

[0022] 100. Drive assembly; 110. Drive member; 120. Transmission assembly; 121. First reduction gear; 122. Second reduction gear; 123. Intermediate reduction gear; 130. Housing; 200. Screw; 210. Guide groove; 300. Shock absorber assembly; 310. Shock absorber cylinder; 320. Shock absorber rod; 330. Upper tray; 340. Lower tray; 350. Shock absorber spring; 400. Connecting assembly; 410. Nut; 420. Connecting cylinder; 421. Flanging; 500. Guide rod; 600. Bearing; 700. Base; 800. Vehicle lower arm. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be understood that the terms "upper", "lower", "left", "right", "front", "back", "middle", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0025] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0026] like Figure 1 and Figure 2As shown, an embodiment of the present invention provides a vehicle suspension system, including a drive assembly 100, a screw rod 200 rotatably connected to a vehicle lower arm 800, a shock absorber assembly 300 connected to a vehicle body, and a connecting assembly 400 connected to the shock absorber assembly 300; the connecting assembly 400 is provided with an internal thread at one end away from the shock absorber assembly 300; one end of the screw rod 200 is threadedly connected to the internal thread, and the other end of the screw rod 200 is transmission-connected to the drive assembly 100; the drive assembly 100 is used to drive the screw rod 200 to rotate, so as to drive the connecting assembly 400 and the shock absorber assembly 300 to move relative to the screw rod 200.

[0027] In this embodiment, the vehicle suspension system can be applied to Figure 3 In the vehicle shown. Figure 3 As shown, the shock absorber assembly 300 at the upper end of the vehicle suspension system is connected to the vehicle body; the lower end of the vehicle suspension system, namely the screw rod 200, is rotatably connected to the vehicle lower arm 800, thereby connecting to the wheel via the lower arm. The vehicle suspension system can determine whether to raise or lower the shock absorber assembly 300 (or the vehicle body) based on preset conditions (e.g., road surface parameters, vehicle speed, vehicle status, and / or preset instructions) or based on user instructions (e.g., a raise or lower instruction directly input by the user). Based on the determination result, the drive assembly 100 is controlled to rotate the screw rod 200, thereby driving the connecting assembly 400 and the shock absorber assembly 300 to move axially relative to the screw rod 200, thereby allowing the vehicle body connected to the shock absorber assembly 300 to be raised or lowered relative to the wheel.

[0028] It is understood that a vehicle using the described vehicle suspension system can combine signal inputs from various sensors within the vehicle and use a vehicle controller to determine the vehicle's operating condition, thereby enabling the vehicle's application in various scenarios. For example, the road surface parameter may include road roughness. The vehicle controller can detect vehicle vibration using a vehicle acceleration sensor to determine road roughness. If the vehicle is determined to be traveling on a rough road, the vehicle suspension system is controlled to raise the vehicle's height, thereby improving vehicle maneuverability. If the vehicle is determined to be traveling on a smooth road, the vehicle suspension system is controlled to lower the vehicle's height, thereby reducing wind resistance, improving driving stability, and reducing fuel consumption. The vehicle speed may include a preset speed. When the vehicle speed is greater than or equal to the preset speed, the vehicle is considered to be traveling on a smooth highway, and the vehicle suspension system is controlled to lower the vehicle's height, thereby reducing wind resistance, improving driving stability, and reducing fuel consumption. The vehicle status may include boarding and exiting, etc., which the vehicle controller can determine based on the status of vehicle body switches and passenger position. When a user is determined to be boarding and exiting, the vehicle suspension system is controlled to adjust the vehicle's height to facilitate boarding and exiting, as well as access to and placement of items. The vehicle status may also include rainfall conditions, for example. The vehicle controller may detect rainfall using a rain sensor and, if heavy rainfall is determined, control the vehicle suspension system to raise the vehicle body to prevent it from being submerged. The vehicle status may also include speech conditions, for example. The vehicle controller may recognize speech or music using a speech recognition system and then control the vehicle suspension system to raise and lower the vehicle body in accordance with the rhythm of the speech or music, thereby achieving a "dancing" function.

[0029] It is understandable that the internal thread on the connecting assembly 400 is coaxially arranged with the screw rod 200, thereby increasing the stability of movement relative to the screw rod 200. A clearance space is provided on the connecting assembly 400 at a position opposite to the internal thread, so that when the relative position of the screw rod 200 in the internal thread and the connecting assembly 400 changes, the screw rod 200 can be avoided. The length of the screw rod 200 can be set as needed. For example, it can be set according to the moving distance of the screw rod 200 on the shock absorber assembly 300 to ensure that the screw rod 200 has sufficient clearance space on the connecting assembly 400. The connection method between the shock absorber assembly 300 and the connecting assembly 400 includes, but is not limited to, one or more of welding, screw connection, or clamping, as long as a stable connection can be formed between the shock absorber assembly 300 and the connecting assembly 400.

[0030] In the vehicle suspension system of the above embodiment of the present invention, a connecting component 400 is provided on the shock absorber assembly 300, and the connecting component 400 is threadedly connected to the screw rod 200 rotatably connected to the vehicle lower arm 800 through an internal thread. In this way, the screw rod 200 can be driven to rotate by the driving component 100, thereby driving the connecting component 400 and the shock absorber assembly 300 to move relative to the screw rod 200 through the rotation of the screw rod 200, so as to realize the lifting and lowering of the shock absorber assembly 300, thereby realizing active adjustment of the vehicle body height; the utility model has a simple structure, occupies a small space, and is easy to arrange.

[0031] like Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber assembly 300 includes a shock absorber cylinder 310; the connecting assembly 400 includes a nut 410 and a connecting cylinder 420 coaxially connected between the nut 410 and the shock absorber cylinder 310; the internal threads are provided on the nut 410. It is understood that the nut 410 and the connecting cylinder 420 are coaxially connected, and therefore, a clearance space is provided in the connecting cylinder 420 for the screw rod 200 to pass through. The nut 410 drives the shock absorber cylinder 310 to move linearly along the axis of the screw rod 200 through the connecting cylinder 420. The nut 410 may be a ball nut 410 to reduce friction with the screw rod 200. The connection between the nut 410 and the connecting cylinder 420 includes, but is not limited to, one or more of threaded connection, welding, or clamping, as long as a secure connection between the nut 410 and the connecting cylinder 420 is established.

[0032] like Figure 2As shown, in one embodiment, the vehicle suspension system further includes a guide rod 500 disposed at an end of the shock absorber cylinder 310 proximate to the connecting cylinder 420. The guide rod 500 is coaxially arranged with the shock absorber cylinder 310. The end of the lead screw 200 facing the shock absorber assembly 300 is provided with a guide groove 210, and the guide rod 500 is slidably inserted into the guide groove 210. It can be understood that the guide rod 500 is used to guide the movement direction of the connecting cylinder 420, enhance the coaxiality between the connecting assembly 400 and the lead screw 200, reduce the interference between the lead screw 200 and the nut 410, and improve the circumferential stress balance at the connection between the lead screw 200 and the nut 410. In some embodiments, the guide rod 500 can be directly mounted on the shock absorber cylinder 310; in this case, the guide rod 500 can be mounted on the end of the shock absorber cylinder 310 facing the connecting cylinder 420 and positioned within the connecting cylinder 420. In other embodiments, the connecting cylinder 420 is provided with a bracket for connecting to the vibration damping cylinder 310, and the guide rod 500 can be connected to the vibration damping cylinder 310 via the bracket. In this case, the guide rod 500 is mounted on the side of the bracket facing away from the vibration damping cylinder 310. It is understood that the length of the guide groove 210 can be adjusted based on the length of the lead screw 200, etc., as long as it does not affect the raising and lowering of the vibration damper assembly 300 relative to the lead screw 200.

[0033] like Figure 1 and Figure 2 As shown, in one embodiment, the shock absorber assembly 300 further includes a shock absorber rod 320 slidably inserted into the shock absorber cylinder 310, an upper tray 330 mounted on the shock absorber rod 320, a lower tray 340 mounted on the shock absorber cylinder 310, and a shock absorber spring 350 connected between the upper tray 330 and the lower tray 340. The end of the shock absorber cylinder 310 away from the upper tray 330 is connected to the connecting cylinder 420. It is understood that the upper tray 330 can be positioned at various locations on the shock absorber rod 320 as needed, as long as it can be connected to the shock absorber spring 350. The lower tray 340 can also be positioned at various locations on the shock absorber cylinder 310 as needed, as long as it can be connected to the end of the shock absorber spring 350 away from the upper tray 330. In one embodiment, the upper tray 330 is positioned at the end of the shock absorber rod 320 away from the lower tray 340. The position of the lower tray 340 can be determined based on the vehicle's vibration damping requirements.

[0034] like Figure 2As shown, in one embodiment, the vehicle suspension system further includes a bearing 600 and a base 700 connected to the vehicle lower arm 800. The end of the screw rod 200 away from the shock absorber assembly 300 is rotatably connected to the base 700 via the bearing 600. It is understood that the screw rod 200 is rotatably connected to the vehicle lower arm 800 via the base 700. The base 700 is connected to the wheel via the lower arm. The bearing 600 can be disposed between the screw rod 200 and the base 700 to reduce friction loss between the screw rod 200 and the base 700.

[0035] like Figure 1 and Figure 2 As shown, in one embodiment, the end of the connecting tube 420 distal from the vibration damping tube 310 is provided with a flange 421, and the connecting tube 420 is coaxially fixedly connected to the nut 410 via the flange 421. It is understood that in this embodiment, the flange 421 is provided at the end of the connecting tube 420 distal from the vibration damping tube 310, i.e., the end that abuts the nut 410. This provides mounting space at the flange 421 for the connection between the connecting tube 420 and the nut 410, facilitating a secure connection (e.g., by screwing, welding, or bonding) between the connecting tube 420 and the nut 410. It is understood that the flange 421 is arranged perpendicular to the axial direction of the nut 410, thereby ensuring that the connecting tube 420 is coaxially fixedly connected to the nut 410 via the flange 421. In other embodiments, the connecting tube 420 does not have a flange 421, and the connecting tube 420 and the nut 410 may be integrally formed.

[0036] like Figure 1 and Figure 2As shown, in one embodiment, the drive assembly 100 includes a driver 110 and a transmission assembly 120. The driver 110 is in transmission connection with the lead screw 200 via the transmission assembly 120 to drive the lead screw 200 to rotate. It is understood that the driver 110 includes, but is not limited to, a component capable of generating rotational motion, such as a motor. The transmission assembly 120 may include, but is not limited to, one or more of a gear drive, a belt drive, or a chain drive, as long as the driver 110 can drive the lead screw 200 to rotate. The drive assembly 100 may also include a motor driver, which controls the torque and speed output by the driver 110, thereby achieving active control of the vehicle suspension system. The drive assembly 100 may also include a housing 130, in which the driver 110, the motor driver, and the transmission assembly 120 are all integrated and mounted. This reduces the size of the drive assembly 100 and facilitates the layout of the vehicle suspension system within the vehicle. The housing 130 can be mounted on the base 700 to avoid rotating with the screw rod 200 or moving with the connecting assembly 400, thereby avoiding affecting the driving of the screw rod 200. The housing 130 can also be mounted on a component on the vehicle lower arm 800 or chassis that does not move with the screw rod 200, depending on actual conditions, to avoid affecting the driving of the screw rod 200.

[0037] like Figure 2 As shown, in one embodiment, the transmission assembly 120 includes a first reduction gear 121 fixedly connected to the drive shaft of the driving member 110, and a second reduction gear 122 coaxially mounted on the screw rod 200; the first reduction gear 121 is meshed with the second reduction gear 122. It can be understood that the first reduction gear 121 and the second reduction gear 122 include, but are not limited to, cylindrical gears or bevel gears, etc., as long as a transmission connection can be formed between the drive shaft of the driving member 110 and the screw rod 200. The drive shaft of the driving member 110 and the screw rod 200 can be arranged parallel to each other, or they can be arranged non-parallel to each other, as long as a transmission connection can be formed through the transmission assembly 120. In one embodiment, the drive shaft of the driving member 110 and the screw rod 200 are arranged parallel to each other, thereby reducing the difficulty of installing the transmission assembly 120 and reducing the volume of the driving assembly 100.

[0038] like Figure 2As shown, in one embodiment, the transmission assembly 120 further includes at least one intermediate reduction gear 123; the first reduction gear 121 is meshedly connected to the second reduction gear 122 via the intermediate reduction gear 123. It is understood that the intermediate reduction gear 123 includes, but is not limited to, cylindrical gears or bevel gears, as long as they can mesh with the first reduction gear 121 and the second reduction gear 122 and form a transmission connection between the drive shaft of the drive member 110 and the screw rod 200. The number of intermediate reduction gears 123 can be set as needed, for example, considering requirements such as transmission ratio or volume.

[0039] like Figure 3 As shown, an embodiment of the present invention further provides a vehicle, comprising the vehicle suspension system. The specific structure of the vehicle suspension system can refer to that described in the above embodiment and will not be repeated here.

[0040] In the vehicle of the above-mentioned embodiment of the present invention, a connecting component 400 is provided on the shock absorber assembly 300 in the vehicle suspension system, and the connecting component 400 is threadedly connected to the screw rod 200 rotatably connected to the vehicle lower arm 800 through an internal thread. In this way, the screw rod 200 can be driven to rotate by the driving component 100, thereby driving the connecting component 400 and the shock absorber assembly 300 to move relative to the screw rod 200 through the rotation of the screw rod 200, so as to realize the lifting and lowering of the shock absorber assembly 300, thereby realizing active adjustment of the vehicle body height; the utility model has a simple structure, occupies a small space, and is easy to arrange.

[0041] The above are merely embodiments of the vehicle suspension system and vehicle of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A vehicle suspension system, characterized in that: It includes a drive assembly, a screw connected to the lower arm of the vehicle for rotation, a shock absorber assembly connected to the vehicle body, and a connecting assembly connected to the shock absorber assembly; An internal thread is provided at one end of the connecting assembly away from the shock absorber assembly; one end of the screw rod is threadedly connected to the internal thread, and the other end of the screw rod is transmission-connected to the drive assembly; the drive assembly is used to drive the screw rod to rotate, thereby driving the connecting assembly and the shock absorber assembly to move relative to the screw rod.

2. The vehicle suspension system according to claim 1, wherein: The shock absorber assembly includes a shock absorber cylinder; the connecting component includes a nut and a connecting cylinder coaxially connected between the nut and the shock absorber cylinder; the internal thread is provided on the nut.

3. The vehicle suspension system according to claim 2, wherein: The vehicle suspension system also includes a guide rod arranged at one end of the shock absorber cylinder close to the connecting cylinder; the guide rod is coaxially arranged with the shock absorber cylinder; a guide groove is provided at one end of the screw rod facing the shock absorber assembly; the guide rod is slidably inserted in the guide groove.

4. The vehicle suspension system according to claim 3, characterized in that The shock absorber assembly also includes a shock absorber rod slidably inserted into the shock absorber cylinder, an upper tray mounted on the shock absorber rod, a lower tray mounted on the shock absorber cylinder, and a shock absorber spring connected between the upper tray and the lower tray; the end of the shock absorber cylinder away from the upper tray is connected to the connecting cylinder.

5. The vehicle suspension system according to claim 2, wherein: The vehicle suspension system further includes a bearing and a base connected to the vehicle lower arm; one end of the screw rod away from the shock absorber assembly is rotatably connected to the base through the bearing.

6. The vehicle suspension system according to claim 2, wherein: The connecting tube is provided with a flange at one end away from the vibration damping tube, and the connecting tube is coaxially fixedly connected to the nut through the flange.

7. The vehicle suspension system according to claim 1, wherein: The driving assembly includes a driving member and a transmission assembly; the driving member is connected to the screw rod through the transmission assembly to drive the screw rod to rotate.

8. The vehicle suspension system according to claim 7, wherein: The transmission assembly includes a first reduction gear fixedly connected to the driving shaft of the driving member, and a second reduction gear coaxially mounted on the screw rod; the first reduction gear is meshed with the second reduction gear.

9. The vehicle suspension system according to claim 8, wherein: The transmission assembly further includes at least one intermediate reduction gear; the first reduction gear is meshedly connected with the second reduction gear via the intermediate reduction gear.

10. A vehicle, characterized in that: A vehicle suspension system comprising the vehicle suspension system according to any one of claims 1 to 9.

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