Actuator, suspension assembly, and vehicle

Abstract

The application relates to an actuator, a suspension assembly and a vehicle. The actuator comprises a stator component and a mover component. Specifically, the stator component comprises a stator core and a stator coil, and the stator coil is arranged on the stator core; the mover component comprises a mover core and a mover coil, and the mover coil is arranged on the mover core; the mover component is sleeved on the outer periphery of the stator component or the stator component is sleeved on the outer periphery of the mover component, the mover component can move relatively to the stator component along the axial direction of the stator component, and one of the stator component and the mover component is suitable for being connected to a vehicle body, and the other is suitable for being connected to a vehicle wheel. Through the technical scheme, the technical problem of high production cost of the actuator in the related art can be solved.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and more particularly to an actuator, suspension assembly, and vehicle. Background Technology

[0002] In related technologies, the magnetic field path of the permanent magnet synchronous suspension motor used in the actuator of the suspension system is axially symmetrical. To reduce magnetic leakage and increase thrust density, a thicker iron core (such as the stator yoke) is usually required to provide a low magnetic reluctance path, or a multi-pole permanent magnet array (such as a Halbacc array) is used to enhance the magnetic field. To achieve peak motor performance, high energy product permanent magnets (such as neodymium iron boron) are needed to provide the required magnetic field. However, high energy product permanent magnets have a large density, increasing the overall weight. Furthermore, the high cost of raw materials and complex manufacturing processes for high-performance permanent magnets (such as neodymium iron boron) makes the production and manufacturing costs of existing actuators high. Utility Model Content

[0003] This application provides an actuator, a suspension assembly, and a vehicle to address the technical problem of high production costs for actuators in the related art.

[0004] To achieve the above objectives, according to a first aspect of this application, an actuator is provided, comprising:

[0005] A stator assembly, comprising a stator core and a stator coil, wherein the stator coil is disposed on the stator core;

[0006] A moving part, the moving part including a moving part iron core and a moving part coil, the moving part coil being disposed on the moving part iron core;

[0007] The moving part is sleeved on the outer periphery of the stator part or the stator part is sleeved on the outer periphery of the moving part. The moving part can move relative to the stator part along the axial direction of the stator part. One of the stator part and the moving part is suitable for connecting to the vehicle body, and the other is suitable for connecting to the wheel.

[0008] Optionally, the moving core includes:

[0009] The mover lamination comprises multiple pieces, which are coaxially stacked along the axial direction of the stator component. A first mounting portion is provided between two adjacent mover laminations, and the mover coil is disposed in the first mounting portion.

[0010] Optionally, the moving part includes a first annular plate and a first annular flange. The first annular flange protrudes from a first surface of the first annular plate and extends along the outer periphery of the first surface. The first annular flange and the first surface surround to form the first mounting portion.

[0011] Optionally, the stator core includes:

[0012] The stator lamination comprises multiple pieces, which are coaxially stacked along the axial direction of the stator component. A second mounting portion is provided between two adjacent stator laminations, and the stator coil is mounted on the second mounting portion.

[0013] Optionally, the stator lamination includes a second annular plate and a second annular flange. The second annular flange protrudes from a first side of the second annular plate and extends along the inner periphery of the second annular plate. The second annular flange and the first side surround to form the second mounting portion.

[0014] Optionally, a first insulating portion is provided on the outer periphery of the stator coil; and / or,

[0015] A second insulating portion is provided on the outer periphery of the moving coil.

[0016] Optionally, both the stator component and the mover component are arranged in a cylindrical shape.

[0017] Optionally, the actuator further includes a housing, in which both the moving part and the stator part are disposed, and a first gap exists between the outer peripheral surface of the moving part and the inner wall surface of the housing.

[0018] Optionally, the actuator may further include an electromagnetic valve damper or a magnetorheological damper.

[0019] Optionally, the magnetorheological damper includes:

[0020] A cylindrical body, which is disposed inside the outer shell and coaxially fixed to the moving part;

[0021] A piston rod, comprising a piston and a rod body, wherein the piston is disposed within the cylinder and divides the cylinder into a first working chamber and a second working chamber, both the first working chamber and the second working chamber are provided with magnetorheological fluid, the piston is provided with a through hole connecting the first working chamber and the second working chamber, the first end of the rod body is coaxially connected to the stator component, and the second end of the rod body is connected to the piston;

[0022] A coil is disposed inside the piston and electrically connected to a power source.

[0023] Optionally, a second gap is provided between the outer peripheral surface of the cylinder and the inner wall surface of the outer shell, and the second gap communicates with the first gap.

[0024] Optionally, the cylinder includes an outer sleeve and an inner ring body. The outer sleeve is coaxially fixed with the moving part, and the inner ring body is coaxially embedded inside the outer sleeve. The end of the inner ring body near the stator part has a first distance from the stator part, and the end of the inner ring body away from the stator part has a second distance from the end of the outer sleeve away from the stator part.

[0025] According to a second aspect of this application, a suspension assembly is provided, the suspension assembly including the actuator described above.

[0026] According to a third aspect of this application, a vehicle is provided, the vehicle including the aforementioned actuator; and / or including the aforementioned suspension assembly.

[0027] In this application, the stator and mover components are set by setting an iron core and a coil. Compared with the existing technology that uses a multi-stage permanent magnet array to prepare the mover component, the stator iron core and mover iron core of this application can be mass-produced by stamping and lamination processes. The process is mature and efficient. The stator coil and mover coil are wound on the stator iron core and mover iron core respectively, without the need for complicated post-processing, which significantly reduces the processing difficulty and production cost of the actuator.

[0028] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments 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.

[0030] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0031] Figure 1 This is a side view of an actuator stator and mover assembly disclosed in an embodiment of this application;

[0032] Figure 2 This is a cross-sectional view of an actuator stator and mover assembly disclosed in an embodiment of this application;

[0033] Figure 3 This is a cross-sectional view of a stator component assembly of an actuator disclosed in an embodiment of this application;

[0034] Figure 4 yes Figure 3A magnified view of a portion of region A in the middle;

[0035] Figure 5 This is a schematic diagram of the structure of the mover core of an actuator disclosed in an embodiment of this application;

[0036] Figure 6 This is a cross-sectional view of a damping component of an actuator disclosed in an embodiment of this application;

[0037] Figure 7 This is a cross-sectional view of an actuator disclosed in an embodiment of this application;

[0038] Figure 8 yes Figure 7 A magnified view of a portion of region B in the middle;

[0039] Figure 9 This is a schematic diagram of the structure of a vehicle disclosed in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 100. Actuator;

[0042] 10. Stator assembly; 11. Stator core; 111. Stator lamination; 1111. Second annular lamination; 1111a. First side surface; 1112. Second annular flange; 12. Stator coil; 13. Second mounting part; 14. First insulation part;

[0043] 20. Moving element component; 21. Moving element core; 211. Moving element lamination; 2111. First annular plate; 2111a. First surface; 2112. First annular flange; 22. First mounting part;

[0044] 30. Outer shell;

[0045] 40. First gap;

[0046] 50. Damping component; 51. Magnetorheological damper; 511. Cylinder; 5111. First working chamber; 5112. Second working chamber; 5113. Outer sleeve; 5114. Inner ring; 512. Piston rod; 5121. Piston; 5122. Rod body; 513. Through hole; 52. Second gap;

[0047] 200. Vehicles. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0049] As described in the background section, current suspension system actuators use multi-stage permanent magnet motors, which are relatively heavy. Furthermore, the high cost of high-performance permanent magnets, due to the expensive raw materials and complex manufacturing processes, results in high actuator production costs. Therefore, this application provides an actuator with lower production costs.

[0050] The actuator of this application will be described in detail below with reference to the accompanying drawings.

[0051] See Figures 1 to 8 As shown, according to a first aspect of this application, an actuator 100 is provided. The actuator 100 includes a stator component 10 and a mover component 20.

[0052] Specifically, the stator component 10 includes a stator core 11 and a stator coil 12, with the stator coil 12 disposed on the stator core 11; the mover component 20 includes a mover core 21 and a mover coil (not shown in the figure), with the mover coil disposed on the mover core 21; wherein, the mover component 20 is sleeved on the outer periphery of the stator component 10 or the stator component 10 is sleeved on the outer periphery of the mover component 20, and the mover component 20 can move relative to the stator component 10 along the axial direction of the stator component 10; one of the stator component 10 and the mover component 20 is suitable for connecting to the vehicle body, and the other is suitable for connecting to the wheel.

[0053] In some application scenarios, the actuator 100 typically needs to be mounted on the suspension system. In this application, the stator component 10 includes a stator core 11 and a stator coil 12, and the mover component 20 includes a mover core 21 and a mover coil. The mover component 20 is sleeved on the outer periphery of the stator component 10, or the stator component 10 is sleeved on the outer periphery of the mover component 20. The mover component 20 can move relative to the stator component 10 along the axial direction of the stator component 10. With this configuration, the force transmission path of the actuator 100 is highly matched with the chassis requirements of the vehicle, the force transmission is direct and without redundant degrees of freedom, which can minimize the energy loss in motion conversion and improve the operating efficiency of the actuator 100. Meanwhile, this application uses a core + coil configuration to set the stator component 10 and the mover component 20. Compared with the prior art, which uses a multi-stage permanent magnet array to prepare the mover component 20, the stator core 11 and the mover core 21 of this application can be mass-produced through stamping and stacking processes. The process is mature and efficient. The stator coil 12 and the mover coil are wound on the stator core 11 and the mover core 21 respectively, without the need for complex post-processing, which significantly reduces the processing difficulty and production cost of the actuator 100.

[0054] like Figure 2 and Figure 5As shown, the mover core 21 includes mover laminations 211. Multiple mover laminations 211 are coaxially stacked along the axis of the stator component 10. A first mounting portion 22 is provided between adjacent mover laminations 211, and the mover coil is disposed in the first mounting portion 22. Exemplarily, the mover laminations 211 can be made of silicon steel sheets, and the number of mover laminations 211 can be 2, 4, 8, or more than 8. The manufacturing process of the mover laminations 211 is mature, efficient, and low-cost, significantly improving production efficiency. When the actuator 100 moves, after the mover coil is energized, its internal magnetic field continuously changes. This changing magnetic field induces eddy currents (circular currents) in the mover core 21. The coaxial stacking of multiple mover laminations 211 along the axis of the stator component 10 reduces eddy current losses, thereby improving electromagnetic efficiency. In actual production, by increasing or decreasing the number of mover laminations 211, the axial length of the mover core 21 can be flexibly adjusted, thereby adapting to actuators 100 with different strokes and thrust requirements (the thrust is positively correlated with the effective length of the mover core 21), without the need to redesign the overall structure, thus reducing production costs.

[0055] Furthermore, the first mounting portion 22 is disposed between two adjacent mover laminations 211, providing a precise and robust positioning structure for the mover coil. The first mounting portion 22 allows for closer contact between the mover coil and the mover core 21 (smaller radial distance), shortening the magnetic field transmission path from the mover coil to the mover core 21, reducing magnetic leakage, and further improving the stability of the driving force output. Simultaneously, mounting the mover coil within the first mounting portion 22 effectively prevents loosening or deformation of the mover coil, greatly enhancing the reliability of the overall structure and extending its service life. In addition, the gaps formed by the stacked mover laminations 211 and the structure of the first mounting portion 22 together create an efficient heat dissipation channel, improving the heat dissipation performance of the actuator 100.

[0056] like Figure 5As shown, the mover lamination 211 includes a first annular plate 2111 and a first annular flange 2112. The first annular flange 2112 protrudes from the first surface 2111a of the first annular plate 2111 and extends along the outer periphery of the first surface 2111a. The first annular flange 2112 and the first surface 2111a together form a first mounting portion 22. This configuration makes the positioning of the mover coil more precise and stable, and enhances its vibration resistance. Furthermore, the first annular plate 2111 and the first annular flange 2112 are made of high-permeability silicon steel sheets, providing an efficient path for the excitation magnetic field. The first annular flange 2112 can actively guide the magnetic field to concentrate inside the mover core 21, reducing magnetic field leakage to the external space. Simultaneously, the entire mover lamination 211 can be formed in one stamping process using a precision die, simultaneously producing the first annular plate 2111 and the first annular flange 2112. This process is simple, highly efficient, and reduces production costs. In addition, the first mounting part 22 is surrounded by the first annular flange 2112 and the first annular plate 2111, which does not require additional axial space, has high axial space utilization, and is suitable for short stroke and small space scenarios.

[0057] like Figures 2 to 4 As shown, the stator core 11 includes stator laminations 111. Multiple stator laminations 111 are coaxially stacked along the axial direction of the stator component 10. A second mounting portion 13 is provided between adjacent stator laminations 111, and the stator coil 12 is mounted on the second mounting portion 13. Exemplarily, the stator laminations 111 can be made of silicon steel sheets, and the number of stator laminations 111 can be 2, 4, 8, or more. The manufacturing process of the stator laminations 111 is mature, efficient, and low-cost, significantly improving production efficiency. The coaxial stacking of the stator laminations 111 along the axial direction of the stator component 10 significantly reduces eddy current losses and improves the stability of the stator magnetic field. The second mounting portion 13, located between adjacent stator laminations 111, provides a rigid fixing structure for axial positioning of the stator coil 12, thereby improving the magnetic circuit coupling accuracy. Meanwhile, the combination of multiple stator laminations 111 and the second mounting portion 13 enables the stator core 11 to possess modular characteristics of adjustable length and coil compatibility, allowing for rapid adaptation to actuators 100 with different power and stroke. Furthermore, the stacking of the stator laminations 111 and the forming of the second mounting portion 13 can be fully integrated into the stamping-lamination integrated process, significantly improving mass production efficiency and thus reducing processing costs. In addition, as a fixed component, the stator component 10 has relatively limited heat dissipation conditions; however, the structure of the stacked stator laminations 111 and the second mounting portion 13 can enhance the heat dissipation of the stator coil 12, ensuring the long-term reliability of the actuator 100.

[0058] like Figure 3 and Figure 4As shown, the stator lamination 111 includes a second annular body 1111 and a second annular flange 1112. The second annular flange 1112 protrudes from the first side surface 1111a of the second annular body 1111 and extends along the inner periphery of the second annular body 1111. The second annular flange 1112 and the first side surface 1111a together form a second mounting portion 13. This arrangement allows the second annular flange 1112 to control the direction of magnetic flux, reduce magnetic leakage, and improve the utilization efficiency of the magnetic circuit and the overall performance of the actuator 100. The second annular flange 1112 and the first side surface 1111a together form the second mounting portion 13, providing mounting space for the stator coil 12. Furthermore, the stator coil 12 is directly and tightly wound on the second annular flange 1112, resulting in a compact structure and high functional density for the stator component 10. In addition, the manufacturing process of the stator lamination 111 is simple and highly efficient, reducing production costs.

[0059] Furthermore, the second annular flange 1112 extends along the inner periphery of the second annular plate 1111. The second annular flange 1112 is equivalent to adding an annular reinforcing rib to the inner ring of the stator lamination 111, which can significantly improve the radial stiffness and deformation capacity of the stator lamination 111. At the same time, the stator coil 12 is in close contact with the side of the second annular plate 1111 and the inner wall of the second annular flange 1112 of the second mounting part 13, so heat can be directly conducted to the stator lamination 111 and then transferred to the outside through the stator lamination 111, thereby extending the service life of the outer insulation layer of the stator coil 12.

[0060] like Figure 4 As shown, a first insulating portion 14 is provided on the outer periphery of the stator coil 12; and / or, a second insulating portion (not shown) is provided on the outer periphery of the mover coil. This arrangement prevents electrical short circuits and ensures that current flows only within the coil, thereby guaranteeing the normal operation of the actuator 100. In some applications, the actuator 100 operates at high speed or vibrates. Continuous friction and fretting occur between the coil and the iron core slot wall. The insulating portion acts as a buffer layer, effectively preventing the wire insulation varnish from being worn away by the sharp edges or burrs of the iron core, greatly improving the product's durability and lifespan under harsh conditions. In this application, the first insulating portion 14 and the second insulating portion can be an insulating frame, or insulating paper or insulating varnish. For example, as... Figure 4 As shown, the first insulating part 14 on the stator component 10 can be an insulating frame, which includes an upper insulating frame and a lower insulating frame. The upper insulating frame and the lower insulating frame are fastened together to form an insulating cavity. The stator coil 12 is placed into the insulating cavity to provide insulation.

[0061] like Figure 1 and Figure 2As shown, both the stator component 10 and the mover component 20 are cylindrical. Understandably, in some applications, the mover component 20 is fitted around the outer periphery of the stator component 10. The cylindrical structure allows the mover component 20 to move relative to the stator component 10 along its axial direction. The contact surfaces of the inner and outer walls are cylindrical, resulting in uniform contact area. This prevents additional lateral friction or uneven wear during operation, thereby improving the lifespan of the actuator 100 and maintaining high precision. Simultaneously, the cylindrical structure ensures that the air gap between the stator component 10 and the mover component 20 is completely uniform and symmetrical in the circumferential direction, thus generating a smooth, unfluctuating electromagnetic thrust, improving the motion smoothness and control accuracy of the actuator 100. Furthermore, the cylindrical shape allows for higher structural strength and rigidity with less material, contributing to a lightweight design of the actuator 100 and maximizing space utilization.

[0062] like Figure 7 As shown, the actuator 100 also includes a housing 30, with both the mover component 20 and the stator component 10 housed within the housing 30. A first gap 40 exists between the outer peripheral surface of the mover component 20 and the inner wall surface of the housing 30. This first gap 40 prevents jamming and friction between the mover component 20 and the housing 30 during linear reciprocating motion, and also isolates the direct rigid connection between the mover component 20 and the housing 30, thus isolating vibration and noise. When the actuator 100 is operating, the mover coil and the mover core 21 generate heat. The first gap 40 provides thermal expansion space for the mover component 20, ensuring the normal operation of the actuator 100. Furthermore, the first gap 40 can also form a heat dissipation duct or a cooling medium channel. Specifically, in some applications, when the mover component 20 reciprocates at high speed, it can drive airflow within the first gap 40, thereby more effectively carrying the heat generated by the mover core 21 and the mover coil to the housing 30, and dissipating it to the outside through the housing 30, achieving a self-ventilating cooling effect. In another application scenario, the housing 30 itself may be a liquid cooling jacket, and the first gap 40 can serve as a flow channel for coolant, directly and efficiently carrying away the heat generated by the moving part 20.

[0063] It is worth noting that the first gap 40 needs to be kept at an appropriate size during the actual design process. A gap that is too small may fail to effectively compensate for thermal expansion and manufacturing tolerances, posing a risk of jamming. At the same time, a gap that is too large should also be avoided, as this could lead to a decrease in magnetic performance and affect guidance.

[0064] like Figure 6 and Figure 7As shown, the actuator 100 also includes a damping component 50, specifically, the damping component 50 includes an electromagnetic valve-type damper or a magnetorheological damper 51. It is understood that both the electromagnetic valve-type damper and the magnetorheological damper 51 can achieve adjustable damping, adjusting the input current / voltage within milliseconds. Simultaneously, the actuator 100 can automatically adjust to the optimal damping parameters according to different operating conditions (such as high-speed / low-speed motion, heavy load / light load), or even real-time detected vibration states, achieving adaptive damping and always providing the best damping effect. The damping component 50 changes the stiffness of the actuator 100 by actively adjusting the magnitude of the damping force. It is understood that when the damping force of the damping component 50 is small, the actuator 100 behaves softly, and the relative movement between the mover component 20 and the stator component 10 is smoother; when the damping force is large, the actuator 100 behaves stiffly, and the relative movement between the mover component 20 and the stator component 10 is hindered. This adjustment capability allows the actuator 100 to dynamically adapt to the vehicle's driving conditions.

[0065] In other words, the damping component 50 has a fast dynamic response speed, which is suitable for the high-frequency / fast action requirements of the actuator 100 and eliminates residual vibration. Furthermore, both types of dampers can be adapted to the limited internal space of the actuator 100, achieving a compact structure and reduced maintenance costs. In this application, the damping component 50 is preferably a magnetorheological damper 51 to improve the high performance, high precision, high response speed, and high reliability of the actuator 100.

[0066] See you again Figure 7 As shown, the magnetorheological damper 51 includes a cylinder 511, a piston rod 512, and a coil (not shown in the figure). The cylinder 511 is disposed inside the outer casing 30 and coaxially fixed to the moving part 20; the piston rod 512 includes a piston 5121 and a rod body 5122. The piston 5121 is disposed inside the cylinder 511 and divides the cylinder 511 into a first working chamber 5111 and a second working chamber 5112. Magnetorheological fluid is disposed in both the first working chamber 5111 and the second working chamber 5112. A through hole 513 is provided on the piston 5121 to connect the first working chamber 5111 and the second working chamber 5112. The first end of the rod body 5122 is coaxially connected to the stator part 10, and the second end of the rod body 5122 is connected to the piston 5121; the coil is disposed inside the piston 5121 and electrically connected to a power source. Specifically, magnetorheological fluid is provided in both the first working chamber 5111 and the second working chamber 5112. This fluid is a type of magnetic particle that, under the influence of a magnetic field, arranges itself into a chain-like structure, changing its viscosity and even becoming a near-solid state. The coil installed inside the piston 5121 generates a magnetic field, affecting the viscosity of the fluid flowing through the through hole 513, thereby adjusting the magnitude of the damping force.

[0067] Specifically, in this application, the piston rod 512 is interference-fitted with the inner diameter of the stator core 11 in the stator component 10. It is understood that the cylinder 511 and the mover component 20 are coaxially fixed, and the piston rod 512 is coaxially connected to the stator component 10. When the mover component 20 moves relative to the stator component 10, this relative motion can be directly expressed as the relative motion between the cylinder 511 and the piston rod 512, that is, the piston 5121 reciprocates within the cylinder 511. During this process, the relative motion direction between the piston 5121 and the cylinder 511 is completely parallel to the output direction of the actuator 100 (no radial offset). The damping force can act directly on the mover component 20 along the axis, avoiding jamming of the mover component 20 or wear of the cylinder 511 due to radial force, ensuring the linearity and stability of the actuator 100's output force. Simultaneously, during the operation of the actuator 100, the moving part 20 may experience slight eccentric vibration due to uneven load. The coaxial magnetorheological damper 51 can counteract this eccentricity through symmetrical damping force. Furthermore, when the moving part 20 drives the cylinder 511 to move in the direction of compressing the first working chamber 5111, the magnetorheological fluid flows from the first working chamber 5111 to the second working chamber 5112 through the through hole 513; when the moving part 20 drives the cylinder 511 to move in the direction of compressing the second working chamber 5112, the magnetorheological fluid flows from the second working chamber 5112 to the first working chamber 5111 through the through hole 513. The two-chamber design plus the bidirectional flow capability of the through hole 513 ensures that the damping force of the moving part 20 is consistent in magnitude and symmetrical in characteristics when it reciprocates, and there will be no deviation of strong or weak unidirectional damping, which is suitable for the reciprocating output force requirements of the actuator 100. The through hole 513 is the only channel for the magnetorheological fluid to flow between the first working chamber 5111 and the second working chamber 5112. All flowing magnetorheological fluid must pass through the magnetic field zone. There is no fluid flow that is not affected by the magnetic field, which ensures that the magnetic field can convert the viscosity adjustment into a 100% change in damping force and avoid inefficient or uncontrolled damping adjustment.

[0068] Furthermore, by placing the coil inside the piston 5121, the magnetic field is highly concentrated, allowing the magnetorheological fluid to be instantly magnetized as it flows through. This results in a faster response speed from coil energization to changes in the viscosity of the magnetorheological fluid, ensuring that the damping force is synchronized with the movement of the actuator 100. Additionally, placing the coil inside the piston 5121 makes the actuator 100 more compact, preventing it from becoming too large.

[0069] like Figure 6 and Figure 7As shown, a second gap 52 exists between the outer peripheral surface of the cylinder 511 and the inner wall surface of the outer shell 30, and the second gap 52 communicates with the first gap 40. It is understood that the actuator 100 generates a large amount of heat during high-speed, high-frequency operation. If only the first gap 40 and the second gap 52 are used for heat dissipation via air cooling, the heat dissipation capacity is limited. By providing cooling oil or other coolant within the first gap 40 and the second gap 52, the heat dissipation efficiency of the actuator 100 can be improved.

[0070] like Figure 6 and Figure 7 As shown, the cylinder 511 includes an outer sleeve 5113 and an inner ring 5114. The outer sleeve 5113 is coaxially fixed to the mover component 20, and the inner ring 5114 is coaxially embedded inside the outer sleeve 5113. The end of the inner ring 5114 near the stator component 10 has a first gap with the stator component 10, and the end of the inner ring 5114 away from the stator component 10 has a second gap with the end of the outer sleeve 5113 away from the stator component 10. It is understood that the inner ring 5114 is typically made of a magnetically conductive material, while the outer sleeve 5113 can be made of a non-magnetically conductive material or a low-magnetically conductive material. The split structure allows the inner ring 5114 to precisely surround the working cavity outside the piston 5121, forming a closed magnetic circuit of coil → piston 5121 → magnetorheological fluid → inner ring 5114. This confines the magnetic field within the working area, reduces magnetic leakage to the outer sleeve 5113, and improves the magnetic field strength and utilization rate. The first and second gaps at both ends are non-magnetic gaps, which can avoid forming an additional magnetic short-circuit path from the inner ring 5114 to the outer sleeve 5113 / stator component 10, further ensuring that the magnetic field only acts on the magnetorheological fluid, and ensuring the accuracy and response speed of the damping force adjustment.

[0071] According to a second aspect of this application, a suspension assembly is provided, which includes the aforementioned actuator 100. Therefore, this suspension assembly includes all the technical effects of the actuator 100 in the above embodiments. Since all the technical effects of the actuator 100 have been described in detail above, they will not be repeated here.

[0072] like Figure 9 As shown, according to a third aspect of this application, a vehicle 200 is provided, which includes the aforementioned actuator 100 or the aforementioned suspension assembly. Therefore, the vehicle 200 includes all the technical effects of the actuator 100 or the suspension assembly in the above embodiments. Since all the technical effects of the actuator 100 and the suspension assembly have been described in detail above, they will not be repeated here.

[0073] Based on the above description, it can be understood that the actuator 100, suspension assembly, and vehicle 200 of this application have at least the following technical effects:

[0074] The actuator 100 of this application includes a linear motor and a damping component 50. The linear motor includes a stator component 10 and a mover component 20 sleeved on the outer periphery of the stator component 10. The stator component 10 includes a stator core 11 and a stator coil 12, and the mover component 20 includes a mover core 21 and a mover coil. The linear motor cooperates with the magnetorheological damper 51, and can actively dampen the vehicle 200 by controlling the output force of the linear motor. Furthermore, the linear motor and the damping component 50 work together, and the presence of the damping component 50 can effectively control the vehicle body, achieve rapid and timely response under high-frequency conditions, and maintain reliable suspension function.

[0075] In the description of this application, 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 indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An actuator (100), characterized in that, include: Stator component (10), the stator component (10) includes a stator core (11) and a stator coil (12), the stator coil (12) being disposed on the stator core (11); The moving part (20) includes a moving core (21) and a moving coil, wherein the moving coil is disposed on the moving core (21); The moving part (20) is sleeved on the outer periphery of the stator part (10) or the stator part (10) is sleeved on the outer periphery of the moving part (20). The moving part (20) can move relative to the stator part (10) along the axial direction of the stator part (10). One of the stator part (10) and the moving part (20) is suitable for connecting the vehicle body, and the other is suitable for connecting the wheels.

2. The actuator (100) according to claim 1, characterized in that, The moving core (21) includes: The mover lamination (211) comprises multiple pieces, which are coaxially stacked along the axial direction of the stator component (10). A first mounting portion (22) is provided between two adjacent mover laminations (211), and the mover coil is disposed in the first mounting portion (22).

3. The actuator (100) according to claim 2, characterized in that, The moving part (211) includes a first annular plate (2111) and a first annular flange (2112). The first annular flange (2112) protrudes from the first surface (2111a) of the first annular plate (2111) and extends along the outer periphery of the first surface (2111a). The first annular flange (2112) and the first surface (2111a) surround each other to form the first mounting part (22).

4. The actuator (100) according to claim 1, characterized in that, The stator core (11) includes: The stator lamination (111) comprises multiple pieces, which are coaxially stacked along the axial direction of the stator component (10). A second mounting portion (13) is provided between two adjacent stator laminations (111), and the stator coil (12) is mounted on the second mounting portion (13).

5. The actuator (100) according to claim 4, characterized in that, The stator lamination (111) includes a second annular plate (1111) and a second annular flange (1112). The second annular flange (1112) protrudes from the first side surface (1111a) of the second annular plate (1111) and extends along the inner periphery of the second annular plate (1111). The second annular flange (1112) and the first side surface (1111a) surround each other to form the second mounting portion (13).

6. The actuator (100) according to claim 1, characterized in that, The stator coil (12) is provided with a first insulating portion (14) on its outer periphery; and / or, A second insulating portion is provided on the outer periphery of the moving coil.

7. The actuator (100) according to any one of claims 1 to 6, characterized in that, Both the stator component (10) and the mover component (20) are cylindrical.

8. The actuator (100) according to any one of claims 1 to 6, characterized in that, The actuator (100) further includes a housing (30), the moving part (20) and the stator part (10) are both disposed inside the housing (30), and there is a first gap (40) between the outer peripheral surface of the moving part (20) and the inner wall surface of the housing (30).

9. The actuator (100) according to claim 8, characterized in that, The actuator (100) also includes an electromagnetic valve damper or a magnetorheological damper (51).

10. The actuator (100) according to claim 9, characterized in that, The magnetorheological damper (51) includes: A cylindrical body (511) is disposed inside the outer shell (30) and coaxially fixed with the moving part (20); A piston rod (512) includes a piston (5121) and a rod body (5122). The piston (5121) is disposed inside the cylinder (511) and divides the cylinder (511) into a first working chamber (5111) and a second working chamber (5112). Magnetorheological fluid is disposed in both the first working chamber (5111) and the second working chamber (5112). A through hole (513) is provided on the piston (5121) to connect the first working chamber (5111) and the second working chamber (5112). The first end of the rod body (5122) is coaxially connected to the stator component (10), and the second end of the rod body (5122) is connected to the piston (5121). A coil is disposed inside the piston (5121) and electrically connected to a power source.

11. The actuator (100) according to claim 10, characterized in that, There is a second gap (52) between the outer peripheral surface of the cylinder (511) and the inner wall surface of the outer shell (30), and the second gap (52) communicates with the first gap (40).

12. The actuator (100) according to claim 10, characterized in that, The cylindrical body (511) includes an outer sleeve (5113) and an inner ring body (5114). The outer sleeve (5113) is coaxially fixed with the moving part (20). The inner ring body (5114) is coaxially embedded inside the outer sleeve (5113). The end of the inner ring body (5114) near the stator part (10) has a first distance from the stator part (10). The end of the inner ring body (5114) away from the stator part (10) has a second distance from the end of the outer sleeve (5113) away from the stator part (10).

13. A suspension assembly, characterized in that, The suspension assembly includes the actuator (100) according to any one of claims 1 to 12.

14. A vehicle (200), characterized in that, The vehicle (200) includes the actuator (100) according to any one of claims 1 to 12; and / or includes the suspension assembly according to claim 13.

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