Damping device, suspension system and vehicle

Abstract

The invention discloses a vibration damping device, a suspension system and a vehicle. The vibration damping device comprises a stator, a rotor and a rotor, the rotor is arranged on the radial outer side of the stator, the rotor is suitable for being connected with a component to be damped, and the stator and the rotor are in transmission connection so as to drive the rotor to move relative to the stator in the axial direction of the stator. According to the vibration damping device, the rotor is arranged on the radial outer side of the stator, the stator and the rotor are in transmission connection to drive the rotor to move relative to the stator in the axial direction of the stator, active control over the vibration damping device can be achieved, the vibration damping requirement of the vibration damping device is met, and a medium playing a vibration damping role in related technologies is omitted; according to the damping device, the sealing performance requirement of the damping device is low, the requirement for air tightness can be greatly lowered, the production and manufacturing cost can be lowered, response can be faster through mechanical transmission cooperation, and the requirement for quick response of the damping device is met.

Description

Technical Field

[0001] This invention relates to the field of automotive technology, and more specifically, to a shock absorber, a suspension system, and a vehicle. Background Technology

[0002] As people's living standards continue to improve, comfort has become an important factor for users when choosing a vehicle.

[0003] Shock absorbers are key components of vehicles. Their function is not only to provide support, but also to improve the vehicle's ride stability, thereby improving the vehicle's comfort during driving. The purpose of this disclosure is to provide a novel shock absorber with good performance. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a vibration damping device that can achieve active control, has low production cost, and a fast response speed.

[0005] Another object of the present invention is to provide a vehicle having the above-mentioned vibration damping device.

[0006] According to an embodiment of the present invention, a vibration damping device includes: a stator; a mover disposed radially outside the stator, the mover being adapted to be connected to a component to be damped, and the stator and the mover being tractively connected to drive the mover to move relative to the stator along the axial direction of the stator.

[0007] According to the vibration damping device of the present invention, the mover is located on the radial outside of the stator, and the stator and the mover are connected by a drive to drive the mover to move relative to the stator in the axial direction of the stator. This enables active control of the vibration damping device, meets the vibration damping requirements of the vibration damping device, eliminates the medium that plays a damping role in related technologies, reduces the sealing requirements of the vibration damping device, can significantly reduce the airtightness requirements, and helps to reduce manufacturing costs. Moreover, the mechanical transmission can make the response faster, achieving the rapid response requirements of the vibration damping device.

[0008] In addition, the vibration damping device according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the vibration damping device of the present invention, the moving element is provided with a moving space, and at least a portion of the stator is disposed within the moving space.

[0010] According to some embodiments of the present invention, the moving part is provided with a groove on one side facing the stator and on one of the outer peripheral walls of the stator, and a guide post that cooperates with the groove is provided on the other side. Under the drive of an external force, the moving part moves along the axial direction of the stator under the guidance of the groove.

[0011] According to some embodiments of the present invention, at least a portion of the groove extends along the axial direction of the stator.

[0012] According to some embodiments of the present invention, the groove is a spiral shape extending along the axis of the stator.

[0013] According to some embodiments of the present invention, the groove is formed in a wavy shape along the circumferential direction of the mover.

[0014] According to some embodiments of the present invention, the groove is formed in a periodically changing wave shape, and the number of guide posts is less than or equal to the number of cycles of the groove.

[0015] According to some embodiments of the present invention, the grooves are connected end to end along the circumferential direction of the mover.

[0016] According to some embodiments of the present invention, the groove includes an ascending section and / or a descending section, and the angle between the plane perpendicular to the axial direction of the stator and the ascending section or the descending section is 25°-35°.

[0017] According to some embodiments of the present invention, a plurality of guide posts are provided at intervals along the circumferential direction of the stator.

[0018] According to some embodiments of the present invention, the number of guide posts is 1 to 3.

[0019] According to some embodiments of the present invention, the stator has a groove on its outer peripheral wall and the mover has a guide post on the side facing the stator. The mover includes: a connecting rod that extends along the axial direction of the stator and is located radially outside the stator, and the guide post is disposed on the connecting rod; and a connecting platform that is connected to both ends of the connecting rod in the axial direction.

[0020] According to some embodiments of the present invention, there are multiple connecting rods spaced apart along the circumferential direction of the stator, and both ends of the multiple connecting rods in the axial direction are connected to the connecting platform, and at least a portion of the stator is located between two of the connecting platforms.

[0021] According to some embodiments of the present invention, the connecting rods are three arranged in an equilateral triangle along the circumferential direction of the stator.

[0022] According to some embodiments of the present invention, the guide post extends in the direction of the center of the equilateral triangle.

[0023] According to some embodiments of the present invention, the guide post is provided with a rolling element, at least a portion of which is located within the groove and is rotatable relative to the groove.

[0024] According to some embodiments of the present invention, the rolling element is a rolling bearing.

[0025] According to some embodiments of the present invention, the width of the groove is 0.02 mm to 0.06 mm larger than the outer diameter of the rolling bearing.

[0026] According to some embodiments of the present invention, the vibration damping device further includes: a drive mechanism connected to the stator, for driving the stator to rotate and causing the mover to move along the axial direction of the stator.

[0027] According to some embodiments of the present invention, the stator is provided with a mounting cavity, and at least a portion of the drive mechanism is disposed in the mounting cavity and connected to the stator.

[0028] According to some embodiments of the present invention, one of the cavity wall of the mounting cavity and the outer peripheral wall of the drive mechanism is provided with a limiting protrusion, and the other is provided with a limiting groove that cooperates with the limiting protrusion, so as to prevent the stator from moving circumferentially relative to the drive mechanism.

[0029] According to some embodiments of the present invention, the vibration damping device further includes: a housing having a receiving cavity, wherein the stator and the mover are both located within the receiving cavity.

[0030] According to some embodiments of the present invention, the mover and the housing are relatively fixed along the circumferential direction of the stator.

[0031] According to some embodiments of the present invention, at least a portion of the drive mechanism is located outside the housing, and the drive mechanism is drive-connected to the stator.

[0032] According to some embodiments of the present invention, the stator is provided with a mounting cavity, at least a portion of the drive mechanism is disposed in the mounting cavity and connected to the stator, the drive mechanism is provided with a connector, and at least a portion of the connector extends out of the housing.

[0033] According to some embodiments of the present invention, a drive shaft is provided at one end of the mover in the axial direction away from the connector, and at least a portion of the drive shaft extends out of the housing to connect with the component to be damped.

[0034] According to some embodiments of the present invention, the vibration damping device further includes: a second base, the second base and the housing being spaced apart and connected to the end of the drive shaft away from the mover; and an elastic element, the elastic element being sleeved on the drive shaft and located between the housing and the second base.

[0035] According to some embodiments of the present invention, both ends of the moving element in the axial direction are spaced apart from the axial end face of the housing, and the vibration damping device further includes: a buffer member, wherein the buffer member is provided on both end faces of the moving element in the axial direction.

[0036] The suspension system according to an embodiment of the present invention includes the vibration damping device described in the embodiment of the present invention.

[0037] According to the suspension system of the present invention, by having a mover located radially outside the stator and the stator and mover being connected by a drive to drive the mover to move relative to the stator along the axial direction of the stator, active control of the vibration damping device can be achieved, meeting the vibration damping requirements of the vibration damping device. This eliminates the medium that plays a vibration damping role in related technologies, resulting in lower sealing requirements for the vibration damping device and significantly reducing the airtightness requirements, which is beneficial to reducing manufacturing costs. Furthermore, the mechanical transmission can make the response faster, achieving the rapid response requirements of the vibration damping device.

[0038] Vehicles according to embodiments of the present invention include a suspension system as described in embodiments of the present invention, or include a damping device as described in embodiments of the present invention.

[0039] According to the vehicle of the present invention, by having a mover located radially outside the stator and the stator and mover being connected by a drive to drive the mover to move relative to the stator along the axial direction of the stator, active control of the vibration damping device can be achieved, meeting the vibration damping requirements of the vibration damping device. This eliminates the medium that plays a vibration damping role in related technologies, resulting in lower sealing requirements for the vibration damping device and significantly reducing the airtightness requirements, which is beneficial to reducing manufacturing costs. Furthermore, the mechanical transmission can make the response faster, achieving the rapid response requirements of the vibration damping device.

[0040] 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

[0041] 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:

[0042] Figure 1 This is a schematic diagram of the structure of a vibration damping device according to some embodiments of the present invention;

[0043] Figure 2 This is a cross-sectional view of a vibration damping device according to some embodiments of the present invention;

[0044] Figure 3 This is a top view of a vibration damping device according to some embodiments of the present invention;

[0045] Figure 4This is a schematic diagram of the stator structure of a vibration damping device according to some embodiments of the present invention;

[0046] Figure 5 This is a top view of the stator of a vibration damping device according to some embodiments of the present invention;

[0047] Figure 6 This is a cross-sectional view of the stator of a vibration damping device according to some embodiments of the present invention;

[0048] Figure 7 This is a schematic diagram of the structure of the mover of a vibration damping device according to some embodiments of the present invention;

[0049] Figure 8 This is a schematic diagram of the structure of the stator groove unfolding along a plane according to some embodiments of the present invention;

[0050] Figure 9 This is a schematic diagram of the structure of the guide column of the vibration damping device according to some embodiments of the present invention;

[0051] Figure 10 This is a schematic diagram of the stator structure of a vibration damping device according to other embodiments of the present invention.

[0052] Figure label:

[0053] 100. Vibration damping device;

[0054] 10. Shell; 11. Receiving cavity;

[0055] 20. Stator; 21. Groove; 22. Limiting groove; 23. Mounting cavity; 211. Upper boundary; 212. Lower boundary; 213. Track line;

[0056] 30. Moving element; 31. Guide post; 32. Drive shaft; 33. Second clearance hole; 34. Second fastener; 35. Moving space; 301. Connecting rod; 302. Connecting platform; 311. Rolling bearing;

[0057] 40. Drive mechanism; 41. Connector; 42. Limiting protrusion;

[0058] 50. Moving segment; 51. Rising segment; 52. Falling segment;

[0059] 60. Tower top; 61. First clearance hole; 62. Nut;

[0060] 71. Lower fork arm; 72. Elastic element; 721. First base; 722. Second base;

[0061] 80. Buffer components. Detailed Implementation

[0062] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown 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.

[0063] 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 do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0064] In the description of this invention, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "above," "over," and "on top" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0065] The vibration damping device 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0066] Reference Figures 2-8 As shown, the vibration damping device 100 according to an embodiment of the present invention may include a stator 20 and a mover 30.

[0067] Specifically, the mover 30 is located radially outside the stator 20. The mover 30 can be connected to the component to be damped. The stator 20 and the mover 30 are connected in a driving manner, so that the stator 20 can drive the mover 30 along the axial direction of the stator 20 (e.g., Figure 2 The vertical movement (as shown in the diagram) relative to the stator 20 enables the movement of the mover 30, thereby achieving active control of the vibration damping device 100 and meeting the vibration damping requirements of the vibration damping device 100.

[0068] Meanwhile, compared with the vibration damping devices in related technologies that achieve transmission through air springs, magnetorheological fluids or hydraulic dampers, the present invention eliminates the medium that plays a vibration damping role by mechanically cooperating between the mover 30 and the stator 20. This reduces the sealing requirements of the vibration damping device 100, significantly lowers the airtightness requirements, and helps to reduce manufacturing costs. Furthermore, the mechanical transmission cooperation enables a faster response, meeting the rapid response requirements of the vibration damping device 100.

[0069] According to an embodiment of the present invention, the vibration damping device 100 is provided with a mover 30 on the radially outer side of the stator 20. The stator 20 and the mover 30 are connected by a drive to drive the mover 30 to move relative to the stator 20 along the axial direction of the stator 20. This enables active control of the vibration damping device 100, meets the vibration damping requirements of the vibration damping device 100, eliminates the medium that plays a damping role in related technologies, reduces the sealing requirements of the vibration damping device 100, can significantly reduce the airtightness requirements, and helps to reduce manufacturing costs. Moreover, the mechanical transmission can make the response faster, achieving the rapid response requirements of the vibration damping device 100.

[0070] In some embodiments of the present invention, such as Figure 2 As shown, the mover 30 is provided with a moving space 35, and at least part of the stator 20 is provided in the moving space 35. This ensures that the mover 30 can move reliably relative to the stator 20 along the axial direction of the mover 30, and avoids the mover 30 from shifting, thereby ensuring the working reliability of the vibration damping device 100.

[0071] In some embodiments of the present invention, such as Figure 2 , Figure 4 , Figures 6-8 The stator 20 has a groove 21 on its outer peripheral wall, and the mover 30 has a guide post 31 on the side facing the stator 20. Thus, when the stator 20 is driven by an external force, the guide post 31 cooperates with the groove 21, so that the groove 21 can limit the movement of the guide post 31, and the mover 30 moves along the axial direction of the stator 20 under the guidance of the groove 21. That is, the rotation of the stator 20 is converted into the linear motion of the mover 30. Compared with the method of using a ball screw, which requires multiple balls to cooperate to convert rotation into linear motion, the structure of the guide post 31 is simple, can reduce machining accuracy, is easy to manufacture, helps to reduce production costs, and is easy to assemble, which can reduce assembly difficulty.

[0072] Of course, the guide post 31 can also be located on the outer peripheral wall of the stator 20. Specifically, the side of the mover 30 facing the stator 20 is provided with a groove 21, and the outer peripheral wall of the stator 20 is provided with a guide post 31 that cooperates with the groove 21. This is also within the protection scope of the present invention.

[0073] According to some embodiments of the present invention, such as Figure 4As shown, at least a portion of the groove 21 extends along the axial direction of the stator 20, which facilitates the conversion of the rotation of the stator 20 into the linear motion of the mover 30, making the structure of the groove 21 simple and easy to process and manufacture.

[0074] In embodiments of the present invention, the specific structure of the groove 21 can be set according to actual conditions.

[0075] For example, in some embodiments, such as Figure 10 As shown, the groove 21 can be a spiral extending along the axis of the stator 20. Through the cooperation of the groove 21 and the guide post 31, the mover 30 can be driven to move along the axial direction of the stator 20 to meet the required movement requirements.

[0076] For example, such as Figure 10 As shown, when the stator 20 rotates in one direction, the guide post 31 moves within the groove 21, causing the mover 30 to move to one side of the axial direction of the stator 20. When the stator 20 rotates in another direction, the guide post 31 moves within the groove 21, causing the mover 30 to move to the other side of the axial direction of the stator 20, thus satisfying the movement requirements of the mover 30.

[0077] For example, in some embodiments, such as Figure 8 As shown, the groove 21 is wavy along the circumferential direction of the mover 30. Therefore, when the stator 20 rotates in one direction, the guide post 31 moves within the groove 21, allowing the mover 30 to move bidirectionally along the axial direction of the stator 20. This satisfies different control requirements of the mover 30, achieving bidirectional active control of the vibration damping device 100. It avoids the need for bidirectional drive of the stator 20, making bidirectional movement easier to control.

[0078] In some embodiments of the present invention, such as Figure 8 As shown, the groove 21 is formed in a periodically changing wave shape, which allows the mover 30 to move within a stable distance, thus facilitating the stable operation of the vibration damping device 100.

[0079] In addition, the number of guide posts 31 is less than or equal to the number of cycles of the groove 21, that is, only one guide post 31 is allowed to move in one cycle of the groove 21, which can ensure the consistency of the movement of the guide posts 31, avoid jamming problems, meet the movement requirements of the mover 30, and ensure the reliable movement of the mover 30.

[0080] It is understandable that, such as Figure 8 As shown, the guide post 31 extends into the groove 21. One sidewall of the groove 21 is the upper boundary 211, and the other sidewall of the groove 21 is the lower boundary 212, so that the guide post 31 is defined by the upper boundary 211 and the lower boundary 212. The guide post 31 moves in the groove 21 to form a trajectory line 213, which satisfies the movement requirements of the guide post 31.

[0081] For example, such as Figure 8 As shown, the groove 21 includes multiple moving segments 50, each of which includes an ascending segment 51 and a descending segment 52. The multiple moving segments 50 are interconnected, making the groove 21 form a periodically changing wave shape, that is, each moving segment 50 forms one cycle of the groove 21. In a monotonically rising contour line segment within a moving segment 50, if multiple guide posts 31 are inserted into a moving segment 50 and the multiple guide posts 31 are placed in the axial direction perpendicular to the mover 30, in order to ensure the consistency of the movement of the guide posts 31, at the monotonically changing connection point, one guide post 31 moves monotonically upward along the trajectory line 213 and another guide post 31 moves monotonically downward along the trajectory line 213, which will cause a jamming problem, thereby affecting the movement of the mover 30.

[0082] Therefore, controlling the number of guide posts 31 to be less than or equal to the number of moving segments 50, i.e., the number of guide posts 31 to be less than or equal to the number of cycles of the groove 21, can meet the movement requirements of the mover 30 and ensure reliable movement of the mover 30. In some embodiments, when the circumference of the guide posts 31 remains constant, a larger number of guide posts 31 results in a greater number of moving segments 50, leading to more drastic changes in the slope of a single moving segment 50, thus making the trajectory line 213 steeper and affecting the movement of the mover 30. Therefore, by controlling the number of guide posts 31, the required movement requirements can be met.

[0083] According to some embodiments of the present invention, the grooves 21 are connected end to end along the circumferential direction of the mover 30, so that the mover 30 can be supported and guided in the circumferential direction, which improves the stability and reliability of the vibration damping device 100, and facilitates the continuous movement of the mover 30. This avoids the control complexity of rotating the stator 20 to return the guide column 31 to the initial position before driving, making the control more convenient.

[0084] In some embodiments of the present invention, such as Figure 8 As shown, the groove 21 includes an ascending section 51 and / or a descending section 52. That is, the groove 21 may include an ascending section 51 or a descending section 52, or the groove 21 may include an ascending section 51 and a descending section 52. That is, when the guide post 31 moves on the ascending section 51, the mover 30 can move to one side along the axial direction of the mover 30. When the guide post 31 moves to the descending section 52, the mover 30 can move to the other side along the axial direction of the mover 30, which can realize the movement requirements of the mover 30.

[0085] Furthermore, the angle between the plane perpendicular to the axial direction of the stator 20 and the rising section 51 or the falling section 52 is 25°-35°, which makes the movement of the mover 30 smoother and avoids the steepness of the groove 21 from affecting the movement of the mover 30, thus meeting the movement requirements of the mover 30. For example, in some specific embodiments, the angle between the plane perpendicular to the axial direction of the stator 20 and the rising section 51 or the falling section 52 can be 25°, 28°, 30°, 32°, 35°, etc.

[0086] For example, when the stator 20 rotates continuously in one direction, the guide column 31 follows the movement trajectory of the groove 21 to complete one ascending segment 51 or descending segment 52, achieving the maximum axial displacement of the mover 30 and realizing the low-frequency, large-amplitude vibration reduction effect of the vibration damping device 100. When the stator 20 rotates forward or backward, the guide column 31 moves along the movement trajectory of the groove 21 on the ascending segment 51 or descending segment 52, achieving the high-frequency, small-amplitude vibration reduction effect of the vibration damping device 100, meeting the usage requirements of different operating conditions. Thus, the requirements corresponding to various operating conditions can all be met by the vibration damping device 100, reducing the structure of the vehicle's vibration damping system, making the structure simple, lightweight, and easy to operate, ensuring good handling stability and ride comfort of the vehicle.

[0087] In some embodiments of the present invention, such as Figure 7 As shown, multiple guide posts 31 are spaced apart along the circumferential direction of the stator 20. The multiple guide posts 31 can increase the contact area between the mover 30 and the stator 20, effectively improve the bearing capacity, and help improve the connection strength and stability between the stator 20 and the mover 30, thereby improving the transmission efficiency and reducing the mechanical performance requirements of the guide posts 31.

[0088] In some embodiments of the present invention, the number of guide posts 31 is 1 to 3, which can reduce the complexity of the structure, effectively reduce production costs, and reduce the space occupied while meeting the required load-bearing capacity. For example, in some specific embodiments, the number of guide posts 31 can be 1, 2, or 3.

[0089] According to some embodiments of the present invention, such as Figure 2 and Figure 7 As shown, the stator 20 has a groove 21 on its outer peripheral wall, and the mover 30 has a guide post 31 on the side facing the stator 20. The mover 30 includes a connecting rod 301 and a connecting platform 302. The connecting rod 301 extends along the axial direction of the stator 20 and is located radially outward of the stator 20. The guide post 31 is provided on the connecting rod 301, and the axial direction of the connecting rod 301 (e.g.) Figure 2Both ends of the mover 30 (shown in the up-down direction) are connected to a connecting platform 302, which helps to improve the structural strength of the mover 30. The mover 30 has a simple structure, which makes it easy to process and manufacture the mover 30, and helps to reduce production costs.

[0090] In some embodiments of the present invention, such as Figure 2 and Figure 7 As shown, there are multiple connecting rods 301, which are spaced apart along the circumferential direction of the stator 20. Both ends of the multiple connecting rods 301 in the axial direction are connected to connecting platforms 302. At least part of the stator 20 is located between two connecting platforms 302. The connecting platforms 302 can realize the connection and guidance with the multiple connecting rods 301, ensuring the reliable movement of the stator 20 and helping to improve the structural strength of the mover 30.

[0091] In embodiments of the present invention, the number of connecting rods 301 can be flexibly set according to actual conditions. For example, the connecting rods 301 can be as follows: Figure 7 The number shown is three, but it can also be two, four, five, six or more, all of which are within the protection scope of this invention.

[0092] In some embodiments where there are multiple guide posts 31, the multiple guide posts 31 can be connected to multiple connecting rods 301 respectively. When the multiple guide posts 31 are engaged with the groove 21, the force on the multiple guide posts 31 can be transmitted to the connecting platform 302 through the connecting rods 301. This can combine the movement of the multiple guide posts 31 into the movement of the connecting platform 302, thereby driving the mover 30. This can reduce the contact stress of a single guide post 31 and meet the required driving requirements.

[0093] According to some embodiments of the present invention, such as Figure 7 As shown, along the circumferential direction of the stator 20, the connecting rods 301 are arranged in three equilateral triangles, which can ensure the structural strength of the mover 30, avoid deformation and other problems, and help reduce production costs.

[0094] In some embodiments of the present invention, such as Figure 7 As shown, the extension direction of the guide post 31 points to the center of the equilateral triangle, enabling the mover 30 to have uniform support and guidance in the circumferential direction. This improves the stability and reliability of the vibration damping device 100 and simplifies the structure, making it easier to manufacture. In some embodiments, one end of each of the multiple connecting rods 301 is connected to a connecting platform 302 in the axial direction, integrating the multiple connecting rods 301 onto a single connecting platform 302. This single connecting platform 302 can fulfill the requirements for fixing and guiding multiple connecting rods 301, while also reducing space requirements and lowering production costs.

[0095] According to some embodiments of the present invention, such as Figure 2 and Figure 9 As shown, the guide post 31 is provided with rolling elements, at least part of which are located in the groove 21 and can roll relative to the groove 21. Thus, the guide post 31 can reduce contact stress by rolling in the groove 21 through the rolling elements, thereby reducing the relative sliding between the guide post 31 and the groove 21 and causing greater wear, thus alleviating wear on the groove 21 and extending the service life of the mover 30.

[0096] In some embodiments, the guide post 31 is threadedly connected to the stator 20 or the mover 30 to ensure that the guide post 31 is reliably fixed to the stator 20 or the mover 30, and to facilitate assembly and disassembly, making maintenance or replacement more convenient.

[0097] In some embodiments of the present invention, the rolling element can be a rolling bearing 311, which simplifies the structure, facilitates the reduction of contact stress and the relief of wear on the groove 21, and reduces production costs.

[0098] In some embodiments, the rolling bearing 311 includes an inner ring and an outer ring. The inner ring is sleeved on the guide post 31, and the outer ring can roll in the groove 21, so that the rolling bearing 311 rolls relative to the contact surface, effectively reducing the wear on the groove 21.

[0099] In embodiments of the present invention, the specific shape of the guide post 31 can be set according to actual conditions. For example, the guide post 31 can be formed into a cylinder, square column, spindle shape or cone shape, etc., all of which can realize the movement requirement of the guide post 31 in the groove 21.

[0100] In some embodiments of the present invention, the width of the groove 21 is 0.02mm-0.06mm larger than the outer diameter of the rolling bearing 311. This ensures smooth movement of the rolling bearing 311 within the groove 21 and avoids long idle strokes caused by large clearances, which could affect the response time of the vibration damping device 100. It also reduces noise generated by impacts caused by the movement of the mover 30 changing its direction of movement, ensuring the reliability of the vibration damping device 100. For example, in some specific embodiments, the width of the groove 21 is 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, etc., larger than the outer diameter of the rolling bearing 311.

[0101] It should be noted that the “width of groove 21” here refers to the distance between the sidewalls of the two grooves 21 that are in radial contact with the rolling bearing 311.

[0102] According to some embodiments of the present invention, such as Figure 3As shown, the vibration damping device also includes a drive mechanism 40, which is connected to the stator 20. The drive mechanism 40 can drive the stator 20 to rotate, so that the stator can drive the mover 30 to move along the axial direction of the stator 20, ensuring reliable drive and facilitating active control of the vibration damping device 100. For example, the drive mechanism 40 is a motor.

[0103] In embodiments of the present invention, the specific way in which the drive mechanism 40 is connected to the stator 20 can be set according to actual conditions.

[0104] For example, in some embodiments, such as Figure 2 and Figure 5 As shown, the stator 20 has a mounting cavity 23, and at least part of the drive mechanism 40 is located in the mounting cavity 23. The drive mechanism 40 is connected to the stator 20, so that the drive mechanism 40 can directly drive the stator 20 to rotate, thereby fulfilling the requirement that the stator 20 drives the mover 30 to move along the axial direction of the mover 30. This integration of the drive mechanism 40 and the stator 20 can improve space utilization, ensure a compact structure, improve the miniaturization integration of the vibration damping device 100, and reduce the transmission structure between the drive mechanism 40 and the stator 20, thereby improving transmission efficiency, reducing space occupation, and helping to reduce production costs.

[0105] In some embodiments, the output shaft of the drive mechanism 40 is located in the mounting cavity 23 and is connected to the stator 20, which enables the drive mechanism 40 and the stator 20 to be placed coaxially, making the structure compact, eliminating other transmission structures, reducing space occupation, effectively improving transmission efficiency, and reducing production costs.

[0106] In some embodiments, the central axis of the output shaft of the drive mechanism 40 may not be coaxial with the central axis of the stator 20, which can meet different usage requirements and ensure more flexible settings.

[0107] In some embodiments of the present invention, such as Figure 5 and Figure 6 As shown, the outer peripheral wall of the drive mechanism 40 is provided with a limiting protrusion 42, and the cavity wall of the mounting cavity 23 is provided with a limiting groove 22. The limiting groove 22 cooperates with the limiting protrusion 42 to prevent the stator 20 from moving circumferentially relative to the drive mechanism 40, ensuring the relative position between the stator 20 and the drive mechanism 40 is stable. This ensures that the drive mechanism 40 drives the stator 20 to rotate during operation, meeting the required rotational demand. Furthermore, the structure is simple, easy to manufacture, and can reduce production costs. For example, the limiting protrusion 42 on the outer peripheral wall of the drive mechanism 40 can be a flat key or a spline, etc.

[0108] Of course, the inner wall of the stator 20 may be provided with a limiting protrusion 42, and the outer peripheral wall of the drive mechanism 40 may be provided with a limiting groove 22 that cooperates with the limiting protrusion 42, which is also within the protection scope of the present invention.

[0109] According to some embodiments of the present invention, such as Figures 1-3 As shown, the vibration damping device also includes a housing 10, which has a receiving cavity 11. The stator 20 and the mover 30 are both located in the receiving cavity 11. The housing 10 can protect the stator 20 and the mover 30, preventing them from being exposed and damaged, which helps to extend the service life of the vibration damping device 100.

[0110] According to some embodiments of the present invention, the mover 30 and the housing 10 are relatively fixed along the circumferential direction of the mover 30, so that the mover 30 moves only along the axial direction of the mover 30 under the driving action of the stator 20, preventing the mover 30 from rotating with the rotation of the stator 20, and ensuring the working reliability of the vibration damping device 100.

[0111] In some embodiments, a groove 21 is provided on one of the inner peripheral wall of the mover 30 and the outer peripheral wall of the stator 20, and a guide post 31 that mates with the groove 21 is provided on the other, such as Figure 8 As shown, the normal to the contact surface between the guide post 31 and the groove 21 does not coincide with the axial direction of the mover 30. That is, the interaction force between the guide post 31 and the groove 21 can be decomposed into two mutually perpendicular components: axial and circumferential. The circumferential force allows the guide post 31 to rotate with the stator 20, but since the mover 30 and the housing 10 are relatively fixed, the mover 30 is prevented from rotating within the housing 10. The axial force drives the guide post 31 to move along the axial direction of the mover 30, thus satisfying the required movement.

[0112] In some embodiments, such as Figures 1-3 , Figure 7 As shown, the inner peripheral wall of the housing 10 can be formed as a non-circular shape, and the outer peripheral wall of the mover 30 can be formed as a non-circular shape that mates with the inner peripheral wall of the housing 10. Thus, by the non-circular fit between the inner peripheral wall of the housing 10 and the outer peripheral wall of the mover 30, the mover 30 and the housing 10 can be relatively fixed along the circumferential direction of the mover 30, preventing the mover 30 from rotating within the housing 10. This simplifies the structure and facilitates manufacturing. For example, both the inner peripheral wall of the housing 10 and the outer peripheral wall of the mover 30 can be formed with triangular angular features.

[0113] In some embodiments of the present invention, at least a portion of the drive mechanism 40 is located outside the housing 10, and the drive mechanism 40 is drively connected to the stator 20. Thus, when the drive mechanism 40 is working, the drive mechanism 40 can drive the stator 20 to rotate, causing the stator 20 to drive the mover 30 to move along the axial direction of the stator 20, thereby achieving the required drive requirements and ensuring installation flexibility.

[0114] In some embodiments, the output shaft of the drive mechanism 40 passes through the stator 20 and is connected to the stator 20, which enables the drive mechanism 40 and the stator 20 to be placed coaxially, making the structure compact, eliminating other transmission structures, reducing space occupation, effectively improving transmission efficiency, and reducing production costs.

[0115] According to some embodiments of the present invention, such as Figure 2 As shown, the stator 20 has a mounting cavity 23, at least a portion of the drive mechanism 40 is located in the mounting cavity 23 and connected to the stator 20, the drive mechanism 40 is provided with a connector 41, at least a portion of the connector 41 extends out of the housing 10, and can meet the required assembly requirements.

[0116] In some embodiments, the portion of the connector 41 extending out of the housing 10 can be connected to the tower top 60 located outside the housing 10, so that the drive mechanism 40 can be connected to the tower top 60 through the connector 41, thereby fixing the drive mechanism 40 inside the housing 10, ensuring that the drive mechanism 40 is reliably fixed, and the structure is simple and easy to process and manufacture.

[0117] In some embodiments, such as Figure 2 As shown, a first clearance hole 61 is provided on the top of the tower 60. The connector 41 passes through the first clearance hole 61 and is connected to the nut 62, which can realize the connection between the connector 41 and the top of the tower 60, ensuring reliable connection and convenient connection, and improving assembly efficiency.

[0118] In some embodiments, a first guide member is provided inside the housing 10, and a connecting member 41 passes through the first guide member. The first guide member is located between the inner wall of the housing 10 and the mover 30. The first guide member can guide the connecting member 41, thereby guiding the mover 30 to move in the axial direction of the mover 30, avoiding deviation, and making the vibration damping device 100 reliable in operation.

[0119] In some embodiments where the mover 30 includes a connecting rod 301 and a connecting platform 302, such as Figure 2 As shown, at one end of the connecting rod 301 in the axial direction near the top of the tower 60 (e.g. Figure 2When the upper end shown is provided with a connecting platform 302, the connecting platform 302 is provided with a second clearance hole 33. The connecting piece 41 can pass through the connecting platform 302 through the second clearance hole 33, which facilitates the connection of the connecting piece 41 to the tower top 60, avoids obstruction of the connecting piece 41, and makes the structure simple and easy to process and manufacture.

[0120] In some embodiments, the drive mechanism 40 includes a stator and a rotor. A connector 41 is provided on one end face of the stator in the axial direction. The rotor is sleeved on the outside of the stator, and the stator 20 is sleeved on the outside of the rotor and connected to the rotor. This allows the rotation of the rotor to drive the rotation of the stator 20, thus fulfilling the driving requirement for the stator 20 and ensuring reliable fixation of the stator 20. At the same time, the drive mechanism 40 has a simple structure, which can reduce the transmission mechanism, improve integration, and reduce production costs. For example, the drive mechanism 40 can be a rotary motor.

[0121] In some embodiments, the vibration damping device 100 can be connected to the vehicle body via the tower top 60 to meet the required assembly requirements and ensure that the vibration damping device 100 is reliably connected to the vehicle body.

[0122] In some embodiments of the present invention, the drive mechanism 40 and the stator 20 are connected by a first fastener to ensure a reliable connection between the drive mechanism 40 and the stator 20, prevent axial slippage between the stator 20 and the drive mechanism 40, thereby preventing the stator 20 from detaching from the drive mechanism 40 and ensuring the operational reliability of the vibration damping device 100.

[0123] According to some embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 7 As shown, the end of the mover 30 furthest from the connector 41 in the axial direction (e.g.) Figure 2 The lower end shown is provided with a drive shaft 32, at least a portion of which extends out of the housing 10, so that the drive shaft 32 can be connected to the component to be damped, thus meeting the required connection requirements. When the stator 20 drives the mover 30 to move relative to the stator 20 in the axial direction of the stator 20, the damping requirements of the damping device 100 can be achieved.

[0124] In some embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the vibration damping device 100 also includes a second base 722, which is spaced apart from the housing 10, and the second base 722 is located at the end of the drive shaft 32 away from the mover 30 (e.g., Figure 2 The lower end (as described in the text) is connected, which enables the mover 30 to drive the second base 722 to move via the transmission shaft 32.

[0125] In addition, the vibration damping device 100 also includes an elastic element 72, which is sleeved on the drive shaft 32 and located between the housing 10 and the second base 722. The elastic element 72 provides support. When the mover 30 moves along the axial direction of the stator 20, the mover 30 drives the drive shaft 32 and the second base 722 to move along the axial direction of the stator 20. During this process, the elastic element 72 can be stretched and compressed, allowing the housing 10 to generate a force opposite to the impact of the road surface to mitigate the impact and vibration of the road surface, effectively attenuating vibration, restoring vehicle stability, and ensuring the smoothness of vehicle driving. For example, the elastic element 72 is a spring.

[0126] In some embodiments, a second guide member is provided inside the housing 10, and the drive shaft 32 passes through the second guide member. The second guide member is located between the inner wall of the housing 10 and the drive shaft 32. The second guide member can guide the drive shaft 32, thereby guiding the movement of the mover 30 along the axial direction of the stator 20, avoiding deviation, and making the vibration damping device 100 reliable in operation.

[0127] In some embodiments, such as Figure 1 and Figure 2 As shown, the vibration damping device 100 also includes a first base 721, and the first base 721 and the end of the housing 10 away from the stator 20 (e.g., Figure 2 The lower end shown in the figure is connected, and the elastic element 72 is located between the first base 721 and the second base 722 to ensure that the elastic element 72 is fixed reliably.

[0128] In some embodiments, the second base 722 and the drive shaft 32 are connected by a second fastener 34, ensuring that the second base 722 and the drive shaft 32 are reliably fixed and easy to assemble, which helps to improve assembly efficiency. For example, the second fastener 34 can be a bolt, etc.

[0129] In some embodiments of the present invention, such as Figure 2 As shown, both ends of the mover 30 in the axial direction are spaced apart from the axial end face of the housing 10. The vibration damping device 100 also includes a buffer 80. Both ends of the mover 30 in the axial direction are provided with buffers 80. When the mover 30 moves along the axial direction of the stator 20, the buffers 80 can prevent the mover 30 from directly contacting the housing 10 and causing vibration, noise, etc., thus avoiding structural damage, ensuring the working stability of the vibration damping device 100, and helping to extend the service life of the vibration damping device 100.

[0130] The suspension system according to an embodiment of the present invention includes a vibration damping device 100 according to an embodiment of the present invention. Since the vibration damping device 100 according to an embodiment of the present invention has the aforementioned beneficial technical effects, the suspension system according to an embodiment of the present invention, by having a mover 30 disposed radially outside the stator 20, and the stator 20 and the mover 30 being drively connected to drive the mover 30 to move relative to the stator 20 along the axial direction of the stator 20, can achieve active control of the vibration damping device 100, meet the vibration damping requirements of the vibration damping device 100, eliminate the medium that plays a damping role in related technologies, reduce the sealing requirements of the vibration damping device 100, significantly reduce the airtightness requirements, and help reduce manufacturing costs. Furthermore, the mechanical transmission coordination enables a faster response, achieving the rapid response requirements of the vibration damping device 100.

[0131] In some embodiments where a drive shaft 32 is provided at the end of the mover 30 away from the connector 41 in the axial direction, such as Figure 1 and Figure 2 As shown, the suspension system includes a lower wishbone 71, and the lower wishbone 71 is connected to the end of the drive shaft 32 away from the mover 30 (e.g., Figure 2 The lower end shown in the diagram is connected to the lower fork arm 71, which is connected to the wheel end of the vehicle. This meets the required assembly requirements, ensures that the vibration damping device 100 is reliably connected to the wheel end, and allows the mover 30 to be transmitted to the wheel end through the lower fork arm 71 along the axial direction of the stator 20, thereby adjusting the height of the vehicle body and realizing the vibration damping function.

[0132] In some embodiments where there are multiple guide posts 31, such as Figure 2 As shown, there are multiple connecting rods 301 that correspond one-to-one with guide posts 31. Each connecting rod 301 is provided with a guide post 31. The ends of the multiple connecting rods 301 facing the lower fork arm 71 in the axial direction are provided with a connecting platform 302. The drive shaft 32 is connected to the connecting platform 302, so that the multiple guide posts 31 transmit the power to the connecting platform 302 through the multiple connecting rods 301. This allows the total stress of the drive shaft 32 to be decomposed into the stress of the multiple guide posts 31, ensuring reliable movement of the mover 30 and high structural strength.

[0133] Meanwhile, by connecting multiple connecting rods 301 through the connecting platform 302, the axial movement of multiple connecting rods 301 can be combined into the axial movement of the connecting platform 302. This avoids problems such as too many connection parts that are not conducive to processing due to multiple drive shafts 32 being connected to the lower fork arm 71, and also avoids the problem of the connecting rods 301 being directly connected to the lower fork arm 71, which would result in a long length. This makes it easier to process and manufacture, and at the same time reduces the space occupied.

[0134] Vehicles according to embodiments of the present invention include suspension systems according to embodiments of the present invention, or include damping devices according to embodiments of the present invention. Since the damping device 100 and suspension system according to embodiments of the present invention have the aforementioned beneficial technical effects, in vehicles according to embodiments of the present invention, by having a mover 30 disposed radially outside the stator 20, and the stator 20 and mover 30 being drively connected to drive the mover 30 to move relative to the stator 20 along the axial direction of the stator 20, active control of the damping device 100 can be achieved, satisfying the damping requirements of the damping device 100. This eliminates the need for a damping medium in related technologies, resulting in lower sealing requirements for the damping device 100, significantly reducing airtightness requirements, which is beneficial for reducing manufacturing costs. Furthermore, the mechanical transmission allows for a faster response, meeting the rapid response requirements of the damping device 100.

[0135] The damping device 100, suspension system, and other components and operation of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0136] 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.

[0137] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" 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 present 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.

[0138] 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 vibration damping device characterized by comprising: The application relates to a vibration damping device comprising: a stator (20); a mover (30) arranged radially outside the stator (20), the mover (30) being adapted to be connected to a component to be damped, the stator (20) and the mover (30) being drivingly connected to drive the mover (30) to move relative to the stator (20) in the axial direction of the stator (20).

2. The vibration damping device according to claim 1, characterized by The mover (30) is provided with a moving space (35), and at least part of the stator (20) is arranged in the moving space (35).

3. The vibration damping device according to claim 1, characterized by One of the side of the mover (30) facing the stator (20) and the peripheral wall of the stator (20) is provided with a groove (21), and the other is provided with a guide column (31) matched with the groove (21), and the stator (20) is driven by external force to drive the mover (30) to move along the axial direction of the stator (20) under the guidance of the groove (21).

4. The vibration damping device according to claim 3, characterized by At least part of the groove (21) extends along the axial direction of the stator (20).

5. The vibration damping device according to claim 4, characterized by The groove (21) is in the shape of a spiral extending along the axis of the stator (20).

6. The vibration damping device according to claim 4, characterized by The groove (21) is in the shape of a wave along the circumferential direction of the mover (30).

7. The vibration damping device according to claim 6, characterized by The groove (21) is in the shape of a wave periodically changing, and the number of the guide columns (31) is less than or equal to the number of periods of the groove (21).

8. The vibration damping device according to claim 6, characterized by The groove (21) is connected head to tail along the circumferential direction of the mover (30).

9. The vibration damping device according to claim 4, characterized by The groove (21) comprises a rising section (51) and / or a falling section (52), and the included angle between the plane perpendicular to the axial direction of the stator (20) and the rising section (51) or the falling section (52) is 25-35 degrees.

10. The vibration damping device according to claim 3, characterized by A plurality of guide columns (31) are arranged at intervals along the circumferential direction of the stator (20).

11. The vibration damping device according to claim 10, characterized by The number of the guide columns (31) is 1-3.

12. The vibration damping device according to claim 3, characterized by The stator (20) is provided with the groove (21) on the peripheral wall, and the mover (30) is provided with the guide column (31) on the side facing the stator (20), and the mover (30) comprises: a connecting rod (301) extending along the axial direction of the stator (20) and located radially outside the stator (20), and the guide column (31) is arranged on the connecting rod (301); a connecting platform (302) connected to both ends of the connecting rod (301) in the axial direction.

13. The vibration damping device according to claim 12, characterized by The connecting rod (301) is a plurality of connecting rods arranged at intervals along the circumferential direction of the stator (20), both ends of the connecting rod (301) in the axial direction are connected to the connecting platform (302), and at least part of the stator (20) is located between two connecting platforms (302).

14. The vibration damping device according to claim 13, characterized by Along the circumferential direction of the stator (20), the connecting rod (301) is arranged in the shape of an equilateral triangle.

15. The vibration damping device according to claim 14, characterized by The extension direction of the guide column (31) points to the center of the equilateral triangle.

16. The vibration damping device of claim 3, wherein The guide column (31) is provided with a rolling element, and at least part of the rolling element is located in the groove (21) and can roll relative to the groove (21).

17. The vibration damping device of claim 16, wherein The rolling element is a rolling bearing (311).

18. The vibration damping device of claim 17, wherein The width of the groove (21) is 0.02mm-0.06mm larger than the outer diameter of the rolling bearing (311).

19. The vibration damping device of claim 1, wherein Further comprising: A driving mechanism (40) connected with the stator (20) for driving the stator (20) to rotate and moving the mover (30) along the axial direction of the stator (20).

20. The vibration damping device of claim 19, wherein The stator (20) is provided with a mounting cavity (23), and at least part of the driving mechanism (40) is arranged in the mounting cavity (23) and connected with the stator (20).

21. The vibration damping device of claim 20, wherein One of the cavity wall of the mounting cavity (23) and the outer peripheral wall of the driving mechanism (40) is provided with a limiting protrusion (42), and the other is provided with a limiting groove (22) matched with the limiting protrusion (42), so as to prevent the stator (20) from moving circumferentially relative to the driving mechanism (40).

22. The vibration damping device of claim 19, wherein Further comprising: A housing (10) having a containing cavity (11), and the stator (20) and the mover (30) are located in the containing cavity (11).

23. The vibration damping device of claim 22, wherein The mover (30) and the housing (10) are relatively fixed along the circumferential direction of the stator (20).

24. The vibration damping device of claim 22, wherein At least part of the driving mechanism (40) is located outside the housing (10), and the driving mechanism (40) is in transmission connection with the stator (20).

25. The vibration damping device of claim 24, wherein The stator (20) is provided with a mounting cavity (23), and at least part of the driving mechanism (40) is arranged in the mounting cavity (23) and connected with the stator (20), and the driving mechanism (40) is provided with a connecting piece (41), and at least part of the connecting piece (41) extends out of the housing (10).

26. The vibration damping device of claim 25, wherein The end of the mover (30) in the axial direction away from the connecting piece (41) is provided with a transmission shaft (32), and at least part of the transmission shaft (32) extends out of the housing (10) to be connected with the component to be damped.

27. The vibration damping device of claim 26, wherein The damping device (100) further comprises: A second base (722) spaced apart from the housing (10) and connected with the end of the transmission shaft (32) away from the mover (30); An elastic member (72) sleeved on the transmission shaft (32) and located between the housing (10) and the second base (722).

28. The vibration damping device of claim 22, wherein Both ends of the mover (30) in the axial direction are spaced apart from the axial end face of the housing (10), and the damping device (100) further comprises: A buffer member (80) arranged on both end faces of the mover (30) in the axial direction.

29. A suspension system characterized by, The damping device (100) according to any one of claims 1-28.

30. A vehicle characterized by The suspension system according to claim 29, or the damping device according to any one of claims 1-28.

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