Multidirectional damper

Abstract

This application relates to the field of vibration damping devices and discloses a multi-directional damper, including: a connecting seat, a transmission assembly, a stator assembly, an eddy current damping assembly, and a magnetic damping assembly. The transmission assembly includes a nut and a ball screw; the stator assembly includes a first sleeve and a first magnetic unit, the first sleeve being sleeved around the ball screw, and the first magnetic unit being circumferentially arranged around the first sleeve and used to generate a magnetic field; the eddy current damping assembly includes a conductor tube that can rotate with the nut, the conductor tube being opposite to the first magnetic unit and used to generate eddy currents; the magnetic damping assembly includes a second sleeve and a second magnetic unit, the second sleeve being movable in a plane perpendicular to a first direction; the first magnetic unit is also used to apply a repulsive force to the second magnetic unit, so that the second sleeve is in a preset position relative to the first sleeve. The multi-directional damper provided by this application solves the technical problem of eddy current dampers having a single control direction in related technologies.

Description

Technical Field

[0001] This application relates to the field of vibration damping devices, and in particular to a multi-directional damper. Background Technology

[0002] An eddy current damper is a device that uses the eddy current effect to reduce vibration. It typically consists of two parts: a magnet and a moving part made of a conductive material. When the moving part moves in the magnetic field created by the magnet, eddy currents are generated in the conductive material. These eddy currents generate a magnetic field opposite to the direction of the moving part's movement, thus producing a damping effect and hindering the original tendency of the moving part to move.

[0003] Currently, common eddy current dampers can usually only achieve vibration reduction control of a single element in a single direction. However, in practical applications, the dynamic action transmitted by various excitation sources may be multi-directional and three-dimensional. Therefore, it is impossible to achieve multi-directional vibration control when using eddy current dampers for vibration reduction. Summary of the Invention

[0004] The purpose of this application is to provide a multi-directional damper to solve the technical problem of eddy current dampers having a single control direction in related technologies.

[0005] To address the above problems, this application provides a multi-directional damper, comprising:

[0006] Connector;

[0007] A transmission assembly includes a nut and a ball screw that engages with the nut. The nut is rotatably connected to the connecting seat, and the ball screw is used to reciprocate along a first direction and drive the nut to rotate.

[0008] A stator assembly includes a first sleeve and a first magnetic unit disposed on the first sleeve. The first sleeve is sleeved on the outside of the ball screw and connected to the connecting seat. The first magnetic unit is arranged circumferentially around the first sleeve and is used to generate a magnetic field.

[0009] The eddy current vibration damping assembly includes a conductor tube sleeved outside the first sleeve, the conductor tube being connected to the nut and rotatable with the nut, the conductor tube being opposite to the first magnetic unit and used to generate eddy currents;

[0010] A magnetic vibration damping assembly includes a second sleeve, which is sleeved outside the ball screw and disposed between the first sleeve and the ball screw. The second sleeve is movable in a plane perpendicular to the first direction.

[0011] The first magnetic unit is also used to apply a repulsive force to the second magnetic unit along the radial direction of the ball screw, so that the second sleeve is in a preset position relative to the first sleeve.

[0012] In some embodiments, the stator assembly includes two flanges, which are sleeved on the ball screw and respectively connected to opposite ends of the first sleeve. There is an installation space between the two flanges, and the second sleeve is movably disposed within the installation space.

[0013] In some embodiments, two flanges are respectively disposed on opposite sides of the nut and are rotatably connected to opposite ends of the nut via thrust bearings, and one of the flanges is also connected to the connecting seat.

[0014] In some embodiments, in the first direction, each end of the second sleeve is provided with a rotating wheel, the rotating wheel being movably abutting against the adjacent flange.

[0015] In some embodiments, the eddy current damping assembly includes a third sleeve, which is sleeved outside the first sleeve and connected to the nut and can rotate with the nut; the conductor tube is installed on the inner wall of the third sleeve.

[0016] In some embodiments, the first magnetic unit includes at least two sets of first magnetic elements, which are spaced apart along the first direction. Each first magnetic element includes a plurality of first magnets spaced apart circumferentially along the first sleeve. The first magnets in the first magnetic element have the same polarity facing the conductor tube, and the first magnets in two adjacent sets of first magnetic elements have different polarities facing the conductor tube. Furthermore, two adjacent sets of first magnetic elements constitute a magnetic field generating unit.

[0017] In some embodiments, the second magnetic unit includes at least one set of second magnetic elements, the second magnetic elements being disposed on the second sleeve and opposite to any set of first magnetic elements, the second magnetic elements including a plurality of second magnets spaced apart circumferentially along the second sleeve, the polarity of the second magnet facing the first magnet being the same as the polarity of the first magnet facing the second magnet opposite to it.

[0018] In some embodiments, the first magnetic unit includes N groups of the first magnetic elements, and the eddy current damping assembly includes M conductor tubes distributed along the first direction, wherein M = N-1; each conductor tube corresponds to one magnetic field generating unit.

[0019] In some embodiments, the first magnet is embedded in the wall of the first sleeve, and a magnetic pad is provided between the first magnet and the wall of the first sleeve.

[0020] In some embodiments, the first magnet is a permanent magnet or an electromagnet.

[0021] The multi-directional damper provided in this application includes a connecting seat, a transmission assembly, a stator assembly, an eddy current damping assembly, and a magnetic damping assembly, a transmission nut, and a ball screw that cooperates with the nut. The nut is rotatably connected to the connecting seat, and the ball screw is used to reciprocate along a first direction and drive the nut to rotate. The stator assembly includes a first sleeve and a first magnetic unit disposed on the first sleeve. The first sleeve is sleeved outside the ball screw and is connected to the connecting seat. The first magnetic unit is arranged circumferentially around the first sleeve and is used to generate a magnetic field. On the one hand, since the eddy current damping assembly includes a conductor tube sleeved outside the first sleeve, the conductor tube is connected to the nut and can rotate with the nut. The conductor tube is opposite to the first magnetic unit and is used to generate eddy currents. Thus, the eddy current damping assembly and the stator assembly can jointly form an eddy current damping generator and achieve longitudinal damping. On the other hand, since the magnetic damping assembly includes a second sleeve and a second magnetic unit, the second sleeve is sleeved outside the ball screw and is disposed between the first sleeve and the ball screw. The second sleeve can move in a plane perpendicular to the first direction. The first magnetic unit is also used to apply a repulsive force to the second magnetic unit along the radial direction of the ball screw so that the second sleeve is in a preset position relative to the first sleeve. Thus, the magnetic damping assembly and the stator assembly can jointly form a magnetic damping generator and achieve lateral damping. In this way, by improving the stator assembly structure and setting up eddy current damping components and magnetic damping components, the utilization rate of the first magnetic unit in the multi-directional damper can be improved. An eddy current damping generator and a magnetic damping generator can be formed simultaneously in the multi-directional damper, realizing multi-directional damping in both longitudinal and transverse directions and solving the problem of single control direction of related dampers. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A cross-sectional view of the multi-directional damper provided in the embodiment of this application in the radial direction of the ball screw;

[0024] Figure 2 A cross-sectional view of the multi-directional damper provided in the embodiment of this application along the axial direction of the ball screw;

[0025] Figure 3 for Figure 1 A partially enlarged view of the stator assembly and magnetic damping assembly in the multi-directional damper shown.

[0026] Explanation of key component symbols:

[0027] 100. Multidirectional damper;

[0028] 1. Connecting seat; 11. Clearance hole; 12. First connecting piece; 2. Transmission assembly; 21. Nut; 22. Ball screw; 23. Second connecting piece; 3. Stator assembly; 31. First sleeve; 32. First magnetic unit; 321. First magnetic component; 322. First magnet; 33. First flange; 34. Second flange; 35. Thrust bearing; 4. Eddy current vibration damping assembly; 41. Conductor tube; 42. Third sleeve; 43. Fastener; 44. Mounting plate; 5. Magnetic vibration damping assembly; 51. Second sleeve; 52. Second magnetic unit; 521. Second magnetic component; 522. Second magnet; 53. Rotating wheel; 6. Installation space. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly set on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for descriptive convenience only, not indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the patent. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0031] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0032] This application provides a multi-directional damper that can be applied to building structures, bridges, mechanical equipment, vehicle suspension systems, etc., to reduce vibration and improve the stability and performance of the structure or system.

[0033] like Figure 1 As shown, the multi-directional damper 100 provided in this embodiment includes a connecting seat 1, a transmission assembly 2, a stator assembly 3, an eddy current damping assembly 4, and a magnetic damping assembly 5. The transmission assembly 2 includes a nut 21 and a ball screw 22 that cooperates with the nut 21. The nut 21 is rotatably connected to the connecting seat 1, and the ball screw 22 is used to move along a first direction (e.g., ...). Figure 1 The stator assembly 3 reciprocates in the direction indicated by Y and drives the nut 21 to rotate. The stator assembly 3 includes a first sleeve 31 and a first magnetic unit 32 disposed on the first sleeve 31. The first sleeve 31 is sleeved outside the ball screw 22 and connected to the connecting seat 1. The first magnetic unit 32 is arranged circumferentially around the first sleeve 31 and is used to generate a magnetic field. The eddy current damping assembly 4 includes a conductor tube 41 sleeved outside the first sleeve 31. The conductor tube 41 is connected to the nut 21 and can rotate with the nut 21. The conductor tube 41 is opposite to the first magnetic unit 32 and is used to generate eddy currents. The magnetic damping assembly 5 includes a second sleeve 51 sleeved outside the ball screw 22 and disposed between the first sleeve 31 and the ball screw 22. The second sleeve 51 can move in a plane perpendicular to the first direction. The first magnetic unit 32 is also used to apply a repulsive force to the second magnetic unit 52 along the radial direction of the ball screw 22 so that the second sleeve 51 is in a preset position relative to the first sleeve 31.

[0034] The connecting seat 1 and the transmission assembly 2 are distributed along a first direction. A first connecting member 12 is provided at the end of the connecting seat 1 away from the ball screw 22, and a second connecting member 23 is provided at the end of the ball screw 22 away from the connecting seat 1. The first connecting member 12 and the second connecting member 23 are respectively used to connect to external structures. In the multi-directional damper 100, the connecting seat 1 can be considered as a reference structure, its position remaining unchanged in the first direction. The external structure transmits power to the multi-directional damper 100 along the first direction, driving the ball screw 22 to reciprocate in a direction closer to or away from the connecting seat 1. The first connecting member 12 and the second connecting member 23 can be connecting blocks with mounting holes, but are not limited to this.

[0035] Nut 21 is connected to connecting seat 1 and is fixed in position in the first direction. When ball screw 22 reciprocates in the first direction, it can drive nut 21 to rotate in different directions. Nut 21 is connected to conductor tube 41 and can convert the linear motion of ball screw 22 in the first direction into rotational motion of conductor tube 41 in a plane perpendicular to the first direction. That is, conductor tube 41 can rotate around ball screw 22 under the action of nut 21.

[0036] The first magnetic unit 32 includes magnets of different polarities, which can be used to generate a magnetic field. The magnetic field lines can pass through the plane of rotation of the conductor tube 41. There is a gap between the conductor tube 41 and the first magnetic unit 32, so that the conductor tube 41 can rotate around the first magnetic unit 32 and is not easily in contact with the first magnetic unit 32.

[0037] Eddy current damping component 4 and stator component 3 together form an eddy current damping generator, used to achieve longitudinal vibration reduction. The longitudinal direction is parallel to the first direction and can be understood as the axial direction of the ball screw 22 and the multi-directional damper 100. Specifically, the ball screw 22 moves linearly under the longitudinal external force, causing the nut 21 and the conductor tube 41 connected to the nut 21 to rotate. During the rotation of the conductor tube 41 relative to the first magnetic unit 32, it cuts magnetic field lines and generates eddy currents, thereby generating a new magnetic field within the conductor tube 41 opposite to the magnetic field direction of the first magnetic unit 32. Both the conductor tube 41 and the first magnetic unit 32 are subjected to damping forces that impede their relative motion. After the conductor tube 41 is subjected to damping force, its original rotational motion is weakened and reacts on the nut 21 and the ball screw 22, impeding the longitudinal movement of the ball screw 22, thus achieving longitudinal vibration reduction. It should be noted that during this process, eddy currents are formed inside the conductor tube 41 and heat energy is generated. The kinetic energy of the conductor tube 41 decreases due to the dissipation of heat energy, which obeys the law of conservation of energy.

[0038] The magnetic damping assembly 5 and the stator assembly 3 together form a magnetic damping generator, which is used to achieve lateral damping. The lateral direction refers to all directions perpendicular to the first direction. The lateral direction can be understood as the radial direction of the ball screw 22 and the multi-directional damper 100 (e.g., the radial direction of the ball screw 22 and the multi-directional damper 100). Figure 1 (Indicated by X in the middle). Specifically, when the connecting seat 1 and transmission assembly 2 of the multi-directional damper 100 are impacted by a lateral external force, the multi-directional damper 100 has a tendency to move laterally. Since the second sleeve 51 is movably disposed between the first sleeve 31 and the ball screw 22, under the action of inertia, the second sleeve 51 has the opposite tendency to move relative to the first sleeve 31 and moves relative to it laterally. Thus, the forces on both ends of the second sleeve 51 are uneven, and the resultant force on the second sleeve 51 is opposite to the direction of its relative movement. Therefore, the force applied to the second sleeve 51 by the first magnetic unit 32 will hinder the relative movement between the two. The force applied to the second sleeve 51 by the first magnetic unit 32 reacts to itself, hindering the overall lateral movement of the multi-directional damper 100 and causing it to tend towards its original equilibrium position, that is, causing the second sleeve 51 to return to the preset position relative to the first sleeve 31, thereby achieving lateral vibration reduction. It should be noted that the preset position is also the static equilibrium position. The force applied by the first magnetic unit 32 to the second sleeve 51 is a repulsive force. Under natural conditions, the first sleeve 31 and the second sleeve 51 are kept at the same center. The repulsive forces at both ends of the second sleeve 51 cancel each other out, and the resultant force on the second sleeve 51 is zero. The first sleeve 31 and the second sleeve 51 are in a static equilibrium state.

[0039] The multi-directional damper 100 provided in this application includes a connecting seat 1, a transmission assembly 2, a stator assembly 3, an eddy current damping assembly 4, and a magnetic damping assembly 5, a transmission nut 21, and a ball screw 22 that cooperates with the nut 21. The nut 21 is rotatably connected to the connecting seat 1, and the ball screw 22 is used to reciprocate along a first direction and drive the nut 21 to rotate. The stator assembly 3 includes a first sleeve 31 and a first magnetic unit 32 disposed on the first sleeve 31. The first sleeve 31 is sleeved on the outside of the ball screw 22 and is connected to the connecting seat 1. The first magnetic unit 32 is arranged circumferentially around the first sleeve 31 and is used to generate a magnetic field. On the one hand, since the eddy current damping assembly 4 includes a conductor tube 41 sleeved outside the first sleeve 31, the conductor tube 41 is connected to the nut 21 and can rotate with the nut 21. The conductor tube 41 is opposite to the first magnetic unit 32 and is used to generate eddy currents. Thus, the eddy current damping assembly 4 and the stator assembly 3 can jointly form an eddy current damping generator and achieve longitudinal damping. On the other hand, since the magnetic damping assembly 5 includes a second sleeve 51 and a second magnetic unit 52, the second sleeve 51 is sleeved outside the ball screw 22 and is disposed between the first sleeve 31 and the ball screw 22. The second sleeve 51 can move in a plane perpendicular to the first direction. The first magnetic unit 32 is also used to apply a repulsive force to the second magnetic unit 52 along the radial direction of the ball screw 22 so that the second sleeve 51 is in a preset position relative to the first sleeve 31. Thus, the magnetic damping assembly 5 and the stator assembly 3 can jointly form a magnetic damping generator and achieve lateral damping. In this way, by improving the structure of the stator assembly 3 and setting the eddy current damping assembly 4 and the magnetic damping assembly 5, the utilization rate of the first magnetic unit 32 in the multi-directional damper 100 can be improved, and an eddy current damping generator and a magnetic damping generator can be formed simultaneously in the multi-directional damper 100 to achieve multi-directional damping in both longitudinal and transverse directions, thus solving the problem of the single control direction of the relevant dampers.

[0040] Some embodiments provided in this application, such as Figure 1 As shown, the connecting seat 1 has a clearance hole 11, into which one end of the ball screw 22 can extend. The clearance hole 11 is a blind hole or a through hole with a certain depth in the first direction.

[0041] The clearance hole 11 structure provided on the connecting seat 1 is beneficial to improve the compactness between the components in the multi-directional damper 100 and reduce the volume of the multi-directional damper 100; in addition, the clearance hole 11 is also used to limit the displacement direction of the ball screw 22, and at the same time, the portion of the ball screw 22 placed in the clearance hole 11 can be protected by the hole wall of the clearance hole 11.

[0042] Some embodiments provided in this application, such as Figure 1As shown, the stator assembly 3 includes two flanges (including the first flange 33 and the second flange 34 in the figure). The two flanges are sleeved on the ball screw 22 and are respectively connected to the opposite ends of the first sleeve 31. There is an installation space 6 between the two flanges, and the second sleeve 51 is movably disposed in the installation space 6.

[0043] The first sleeve 31 has two opposite ends in a first direction. The center of the flange has a mounting hole, and the two flanges are spaced apart on the ball screw 22 along the first direction, without contact between the flanges and the ball screw 22.

[0044] With the above design, the second sleeve 51 is set independently relative to the ball screw 22 and the connecting seat 1. The second sleeve 51 is only affected by the force applied by the first magnetic unit 32, which has high sensitivity and fast response speed, and can quickly reduce lateral vibration.

[0045] It is understood that in some embodiments, an mounting plate can be provided between the first sleeve 31 and the ball screw 22 to fix the second sleeve 51; or, in some embodiments, an elastic element can be used to connect the second sleeve 51 and the nut 21. The specific design can be made according to the actual situation and is not limited here.

[0046] In some embodiments provided in this application, two flanges are respectively disposed on opposite sides of the nut 21 and are rotatably connected to opposite ends of the nut 21 via thrust bearings 35, and one of the flanges is also connected to the connecting seat 1.

[0047] like Figure 1 As shown, the stator assembly 3 includes a first flange 33 and a second flange 34. The first flange 33, the first sleeve 31, and the second flange 34 form a cylindrical mounting space 6. The nut 21 and the second sleeve 51 are both disposed within the mounting space 6. One surface of the second flange 34 is rotatably connected to the nut 21, and the other surface is fixedly connected to the connecting seat 1.

[0048] By setting a flange, the first sleeve 31 can be fixedly connected to the connecting seat 1, and the first sleeve 31 can be rotatedly connected to the nut 21. The structure is reasonable and the friction loss generated during use is small. In addition, under the action of the flange and the thrust bearing 35, the nut 21 can be fixed in the first direction position, so that the nut 21 can rotate on the ball screw 22.

[0049] It is understood that in some embodiments, the number and installation position of the nuts 21 can be adjusted, and the first sleeve 31, the connecting seat 1 and the nuts 21 can be connected by a connecting rod or other structure. The specific design can be made according to the actual situation, and no limitation is made here.

[0050] Some embodiments provided in this application, such as Figure 1 As shown, in the first direction, rotating wheels 53 are provided at both ends of the second sleeve 51, and the rotating wheels 53 can be movably abutted against the adjacent flange.

[0051] The rotating wheel 53 is used to drive the second sleeve 51 to move freely in various directions perpendicular to the first direction, including but not limited to bullseye wheels, spherical wheels, and casters. It can be understood that the direction of movement of the second sleeve 51 is related to the lateral force on the multi-directional damper 100.

[0052] Using the rotating wheel 53 to connect the second sleeve 51 and the flange helps to improve the flexibility of the second sleeve 51, thereby further improving the lateral vibration reduction effect of the multi-directional damper 100.

[0053] It is understood that in some embodiments, a groove structure can be provided on the flange, and a slider can be designed at the end of the second sleeve 51. The sliding cooperation between the slider and the groove can realize the directional movement of the second sleeve 51 in the lateral direction. The specific design can be made according to the actual situation and is not limited here.

[0054] Some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the eddy current damping assembly 4 includes a third sleeve 42, which is sleeved outside the first sleeve 31. The third sleeve 42 is connected to the nut 21 and can rotate with the nut 21. The conductor tube 41 is installed on the inner wall of the third sleeve 42.

[0055] The radii of the second sleeve 51, the first sleeve 31, and the third sleeve 42 increase sequentially. The three sleeves are coaxially sleeved on the outside of the ball screw 22 and are spaced apart in the radial direction of the ball screw 22.

[0056] like Figure 1 As shown, in the first direction, one end of the third sleeve 42 extends out of the first sleeve 31 and the second sleeve 51, and can pass over the first sleeve 31 and the second sleeve 51 to be connected to the nut 21.

[0057] Using the third sleeve 42 to connect the conductor tube 41 and the nut 21 helps to improve the rotational stability of the conductor tube 41, and the connection structure is reasonable and less prone to interference during use.

[0058] Some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the conductor tube 41 is connected to the third sleeve 42 by fasteners 43 such as bolts and screws. The installation height of the conductor tube 41 in the first direction can be adjusted according to the actual situation. In some cases, conductor tubes 41 of different sizes can be replaced as needed to adjust the distance between the conductor tube 41 and the first magnetic unit 32.

[0059] It is understood that in some embodiments, the conductor tube 41 can also be fixed to the inner wall of the third sleeve 42 by a snap-fit ​​structure. The specific design can be made according to the actual situation and is not limited here.

[0060] Some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the third sleeve 42 and the first sleeve 31 are arranged radially apart on the ball screw 22. One end of the third sleeve 42 is connected to the nut 21 through the mounting plate 44. At a position away from the mounting plate 44 and the conductor tube 41, a rotating rod extending radially is provided between the third sleeve 42 and the second sleeve 51. One end of the rotating rod is fixedly connected to the inner wall of the third sleeve 42, and the other end is slidably connected to the outer wall of the second sleeve 51. The rotating rod can be used to improve the rotational stability of the third sleeve 42.

[0061] Some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the first magnetic unit 32 includes at least two sets of first magnetic elements 321, which are spaced apart along a first direction. Each first magnetic element 321 includes a plurality of first magnets 322 spaced apart circumferentially along the first sleeve 31. The first magnets 322 in the first magnetic element 321 have the same polarity facing the conductor tube, and the first magnets 322 in two adjacent sets of first magnetic elements 321 have different polarities facing the conductor tube. Two adjacent sets of first magnetic elements 321 form a magnetic field generating unit.

[0062] The first magnet 322 includes two ends, one being the N pole and the other the S pole. The arrangement of adjacent sets of first magnetic elements 321 differs; in one set, the N pole of the first magnet 322 faces the conducting tube 41, while in the other set, the S pole of the first magnet 322 faces the conducting tube 41. Between adjacent sets of first magnetic elements 321, there exists a magnetic field line pointing from the N pole to the S pole.

[0063] In one specific embodiment, such as Figure 1 and Figure 3 As shown, the first magnetic unit 32 includes three sets of first magnetic elements 321: an upper first magnetic element, a middle first magnetic element, and a lower first magnetic element. In the upper and lower first magnetic elements, the N pole of the first magnet 322 faces the conductor tube 41, and the S pole faces the second sleeve 51; in the middle first magnetic element, the S pole faces the conductor tube 41, and the N pole faces the second sleeve 51. The multiple first magnets 322 in the middle first magnetic element are correspondingly arranged with the multiple first magnets 322 in the upper first magnetic element and form a magnetic field generating unit; the multiple first magnets 322 in the middle first magnetic element are also correspondingly arranged with the multiple first magnets 322 in the lower first magnetic element and form another magnetic field generating unit.

[0064] The eddy current damping coefficient formed between the conductor tube 41 and the single first magnet 322 is denoted as C. e The equivalent axial damping coefficient formed between the conductor tube 41 and the single first magnet 322 is denoted as C. m Neglecting frictional resistance, the following holds:

[0065]

[0066] Where r is the inner diameter of the conductor tube 41, and h is the lead of the ball screw 22. Since r is much larger than h, C m The value is C e Hundreds or thousands of times. It can be understood that the equivalent axial damping coefficient of the multi-directional damper 100 in the first direction is the sum of the equivalent axial damping coefficients formed between the conductor tube 41 and the multiple first magnets 322.

[0067] By adopting the above design, on the one hand, by setting multiple sets of first magnetic elements 321 on the first sleeve 31 and increasing the number of first magnets 322 in the first magnetic elements 321, the damping coefficient between the conductor tube 41 and the first magnetic unit 32 can be effectively amplified, thereby improving the longitudinal vibration reduction effect of the multi-directional damper 100; on the other hand, by setting first magnets 322 with the same polarity in the first magnetic elements 321, the magnetic field lines in the magnetic field formed by the first magnetic unit 32 can be more rationally distributed, thereby ensuring the effect of cutting magnetic field lines when the conductor tube 41 rotates.

[0068] It is understood that in some embodiments, the first magnetic element 321 may also be designed as a single, integral ring-shaped magnet.

[0069] In some embodiments provided in this application, the first magnetic unit 32 includes N sets of first magnetic elements 321, and the eddy current damping assembly 4 includes M conductor tubes 41 distributed along a first direction, where M = N-1. Each conductor tube 41 corresponds to a magnetic field generating unit.

[0070] In one specific embodiment, such as Figure 1 and Figure 2 As shown, the first magnetic unit 32 includes three sets of first magnetic components 321, which together form two magnetic field generating units. The third sleeve 42 is provided with two independent conductor tubes 41, each corresponding to a magnetic field generating unit.

[0071] In some cases, the first magnetic elements 321 are spaced far apart in the first direction, the conductor tube 41 is aligned with the center of the magnetic field generating unit, and the height of the conductor tube 41 in the first direction can be less than the distance between two adjacent sets of first magnetic elements 321. That is to say, adjacent conductor tubes 41 can be spaced apart.

[0072] The above design helps to improve the alignment effect between the conductor tube 41 and the first magnetic unit 32. By reducing the size of a single conductor tube 41, the assembly difficulty of the multi-directional damper 100 can also be reduced.

[0073] It is understood that in some embodiments, only one conductor tube 41 may be provided, and the conductor tube 41 may simultaneously correspond to multiple magnetic field generating units of the first magnetic unit 32.

[0074] In some embodiments provided in this application, the first magnet 322 is embedded in the cylinder wall of the first sleeve 31, and a magnetic pad (not shown) is also provided between the first magnet 322 and the cylinder wall of the first sleeve 31.

[0075] The magnetic pad is made of a material with magnetic properties, including but not limited to adhesive, steel, and nickel. The magnetic pad is disposed around the first magnet 322 and can be used to improve the magnetic field distribution within the first magnetic unit 32.

[0076] The aforementioned magnetic pad can improve the magnetic field distribution between adjacent first magnets 322 in the first direction, allowing magnetic field lines on the side away from the conductor tube 41 to directly pass through the cylinder wall of the first sleeve 31, thereby increasing the magnetic field density between adjacent first magnetic components 321. In addition, the magnetic pad can also provide support for the first magnets 322 to reduce the risk of deformation, damage or detachment of the first magnets 322.

[0077] It is understood that in some embodiments, in order to further optimize the shape and direction of the magnetic field, magnets may be provided in adjacent first magnetic elements 321. The magnets have N poles and S poles distributed along the first direction. The specific design can be made according to the actual situation and is not limited here.

[0078] In some embodiments provided in this application, the first magnet 322 can be a permanent magnet. Permanent magnets can form a stable magnetic field without relying on a power source, consume less energy, and are not easily affected by external factors.

[0079] In some embodiments provided in this application, the first magnet 322 can also be an electromagnet. Adjusting the current can change the magnitude and direction of the magnetic field generated by the electromagnet, thereby enabling dynamic control, which is suitable for situations requiring a larger magnetic field strength.

[0080] In some embodiments provided in this application, during the rotation of the eddy current damping component 4, in addition to the electric eddy current damping, there is also an inertial mass moment, and the inertial mass moment of the eddy current damping component 4 is converted into the additional axial mass of the multi-directional damper 100 after passing through the transmission component 2.

[0081] Let I be the sum of the torsional moments of all components in the eddy current damping assembly 4. gThe axial equivalent additional mass generated by the eddy current damping component 4 is denoted as the equivalent axial damping coefficient, and m is denoted as the equivalent axial damping coefficient. e Neglecting transmission losses, the following holds:

[0082]

[0083] Where h is the lead of the ball screw 22. When the lead h of the ball screw 22 is very small, the torsional mass moment of the eddy current damping component 4 can be amplified by hundreds or thousands of times, forming a large axial motion equivalent mass, which makes the multi-directional damper 100 have a large negative stiffness effect, thereby further improving the longitudinal damping effect of the multi-directional damper 100.

[0084] Some embodiments provided in this application, such as Figure 1 and Figure 2 As shown, the second magnetic unit 52 includes at least one set of second magnetic elements 521. The second magnetic elements 521 are disposed on the second sleeve 51 and are opposite to any set of first magnetic elements 321. The second magnetic element 521 includes a plurality of second magnets 522 that are spaced apart along the circumference of the second sleeve 51. The polarity of the second magnet 522 facing the first magnet 322 is the same as the polarity of the first magnet 322 facing the second magnet 522.

[0085] The second magnet 522 includes two ends, one end being the N pole and the other end being the S pole. The arrangement of the second magnetic element 521 is related to the arrangement of the first magnetic element 321, specifically, as follows: Figure 3 As shown, the second magnet 522 is arranged opposite to the first magnet 322, and the opposite ends of any pair of first magnets 322 and second magnets 522 have the same polarity.

[0086] The second magnet 522 can be a permanent magnet or an electromagnet.

[0087] By adjusting the number and position of the second magnetic element 521, the magnitude of the force between the first magnetic unit 32 and the magnetic vibration damping component 5 can be changed, thereby altering the ability to regulate lateral vibration.

[0088] It is understood that in some embodiments, the second magnetic element 521 may also be designed as a single, integral ring-shaped magnet.

[0089] In summary, the multi-directional damper 100 provided in this application, by improving the structure of the stator assembly 3 and setting the eddy current damping assembly 4 and the magnetic damping assembly 5, can improve the utilization rate of the first magnetic unit 32 in the multi-directional damper 100, and simultaneously form an eddy current damping generator and a magnetic damping generator in the multi-directional damper 100, realizing multi-directional damping in both longitudinal and transverse directions, and solving the problem of single control direction of related dampers; in addition, by adjusting the magnetic field strength formed by the first magnetic unit 32 in the multi-directional damper 100, the diameter of the conductor tube 41, the number of the first magnet 322 and the number of the second magnet 522, etc., the damping coefficient of the multi-directional damper 100 in the longitudinal and transverse directions can also be adjusted, thereby achieving different damping capabilities.

[0090] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A multi-directional damper, characterized in that, include: Connector; A transmission assembly includes a nut and a ball screw that engages with the nut. The nut is rotatably connected to the connecting seat, and the ball screw is used to reciprocate along a first direction and drive the nut to rotate. A stator assembly includes a first sleeve and a first magnetic unit disposed on the first sleeve. The first sleeve is sleeved on the outside of the ball screw and connected to the connecting seat. The first magnetic unit is arranged circumferentially around the first sleeve and is used to generate a magnetic field. The eddy current vibration damping assembly includes a conductor tube sleeved outside the first sleeve, the conductor tube being connected to the nut and rotatable with the nut, the conductor tube being opposite to the first magnetic unit and used to generate eddy currents; A magnetic vibration damping assembly includes a second sleeve and a second magnetic unit disposed on the second sleeve. The second sleeve is sleeved outside the ball screw and disposed between the first sleeve and the ball screw. The second sleeve can move in a plane perpendicular to the first direction. The first magnetic unit is also used to apply a repulsive force to the second magnetic unit along the radial direction of the ball screw, so that the second sleeve is in a preset position relative to the first sleeve.

2. The multi-directional damper according to claim 1, characterized in that, The stator assembly includes two flanges, which are sleeved on the ball screw and respectively connected to the opposite ends of the first sleeve. There is an installation space between the two flanges, and the second sleeve is movably disposed within the installation space.

3. The multi-directional damper according to claim 2, characterized in that, The two flanges are respectively disposed on opposite sides of the nut and are rotatably connected to opposite ends of the nut via thrust bearings, and one of the flanges is also connected to the connecting seat.

4. The multi-directional damper according to claim 2, characterized in that, In the first direction, rotating wheels are provided at both ends of the second sleeve, and the rotating wheels are movably abutting against the adjacent flange.

5. The multi-directional damper according to claim 1, characterized in that, The eddy current vibration damping assembly includes a third sleeve, which is sleeved outside the first sleeve and connected to the nut and can rotate with the nut; the conductor tube is installed on the inner wall of the third sleeve.

6. The multi-directional damper according to any one of claims 1-5, characterized in that, The first magnetic unit includes at least two sets of first magnetic elements, which are spaced apart along the first direction. The first magnetic elements include a plurality of first magnets spaced apart along the circumference of the first sleeve. The first magnets in the first magnetic component have the same polarity facing the conductor tube, and the first magnets in two adjacent sets of the first magnetic component have different polarities facing the conductor tube. The two adjacent sets of the first magnetic component form a magnetic field generating unit.

7. The multi-directional damper according to claim 6, characterized in that, The second magnetic unit includes at least one set of second magnetic elements. The second magnetic elements are disposed on the second sleeve and are opposite to any set of first magnetic elements. The second magnetic elements include a plurality of second magnets that are spaced apart circumferentially along the second sleeve. The polarity of the second magnet facing the first magnet is the same as the polarity of the first magnet facing the second magnet.

8. The multi-directional damper according to claim 6, characterized in that, The first magnetic unit includes N sets of the first magnetic components, and the eddy current damping assembly includes M conductor tubes distributed along the first direction, where M = N-1; each conductor tube corresponds to one magnetic field generating unit.

9. The multi-directional damper according to claim 6, characterized in that, The first magnet is embedded in the wall of the first sleeve, and a magnetic pad is also provided between the first magnet and the wall of the first sleeve.

10. The multi-directional damper according to claim 6, characterized in that, The first magnet is a permanent magnet or an electromagnet.

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