Actuator, suspension assembly and vehicle

Abstract

The actuator comprises a shell, a linear motion part, an electromagnetic assembly, a first guide assembly and a second guide assembly, the linear motion part is arranged in the shell in the mode that the linear motion part moves linearly in the first direction, the electromagnetic assembly comprises a first electromagnetic part and a second electromagnetic part, and the first guide assembly and the second guide assembly are arranged in the shell in the mode that the linear motion part moves linearly in the first direction. The first electromagnetic part is arranged on the shell, the second electromagnetic part is arranged on the linear motion part, and the first electromagnetic part and the second electromagnetic part interact to enable the shell and the linear motion part to linearly move in the first direction; at least part of the structure of the first guide assembly is arranged between the first electromagnetic part and the second electromagnetic part, and the second guide assembly is arranged between the shell and the linear motion part. According to the actuator provided by the embodiment of the utility model, the first guide assembly and the second guide assembly are arranged, so that the linear motion part can better slide along the guide surface, and the durability of the actuator can be improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and in particular to an actuator, a suspension assembly and a vehicle. Background Art

[0002] The stiffness and damping of a traditional passive suspension are non-adjustable, making it difficult to effectively meet the dynamic performance requirements under different driving road surfaces and driving speeds. Moreover, the passive suspension converts vibration energy into heat energy and dissipates it, resulting in energy waste. An active suspension can output an ideal actuating force in real time, thereby improving the vehicle dynamic performance under different road conditions. Although the oil-gas suspension and the air suspension can adjust the control parameters in real time according to the changes of the driving road surface and driving speed, they consume a large amount of energy and have inherent problems such as low control bandwidth and slow response speed. The linear motor electromagnetic active suspension can achieve bidirectional energy flow, with dual functions of energy regeneration and active actuation. In the energy regeneration mode, the suspension vibration energy is recovered to reduce the overall system energy consumption; in the active control mode, the linear motor has a higher control bandwidth and a faster response speed. Therefore, compared with the active oil-gas suspension and the air suspension, the electromagnetic suspension has more excellent comprehensive performance and is a hot spot in the current research field of active suspensions.

[0003] However, the mover assembly in the electromagnetic suspension in the related technology is prone to generate lateral force during movement, increasing the part wear of the linear motor and reducing the durability of the actuator system. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide an actuator, in which the moving direction of the linear motion component of the actuator is stable, the linear motion component can slide well along the guiding surface, and the durability of the actuator can be improved.

[0005] The actuator according to an embodiment of the utility model includes: a housing; a linear motion component linearly moving along a first direction and arranged in the housing; an electromagnetic assembly including a first electromagnetic member and a second electromagnetic member, the first electromagnetic member being arranged on the housing, the second electromagnetic member being arranged on the linear motion component, and the first electromagnetic member and the second electromagnetic member interacting with each other to linearly move the housing and the linear motion component along the first direction; a first guiding assembly and a second guiding assembly, at least part of the structure of the first guiding assembly being arranged between the first electromagnetic member and the second electromagnetic member, and the second guiding assembly being arranged between the housing and the linear motion component.

[0006] According to the actuator of the embodiment of the present utility model, at least part of the structure of the first guiding component is arranged between the first electromagnetic component and the second electromagnetic component, and the second guiding component is arranged between the housing and the linear motion component, so that the second electromagnetic component and the linear motion component can stably move along the first direction, the generation of magnetic deviation force can be reduced, and further the wear of the linear motion component can be reduced, thereby improving the durability of the actuator. In the direction from the second electromagnetic component to the first electromagnetic component, the relative positions of the second electromagnetic component and the first electromagnetic component are not likely to change, so that the second electromagnetic component can stably generate electromotive force when not energized, and when the second electromagnetic component is energized, it can stably cooperate with the first electromagnetic component to generate damping, which is beneficial to the actuator to stably provide vibration damping for the vehicle and can preferably improve the smoothness and controllability of the vehicle during driving.

[0007] In addition, the actuator according to the present utility model may further have the following additional technical features:

[0008] In some embodiments of the present utility model, the first guiding component includes a guiding structure, and the guiding structure is arranged on the surface of the first electromagnetic component facing the second electromagnetic component, and the linear motion component is adapted to move along the guiding surface of the guiding structure.

[0009] In some embodiments of the present utility model, the first guiding component further includes a first guiding member and a second guiding member, and the first guiding member and the second guiding member are located between the first electromagnetic component and the linear motion component and are spaced apart along the first direction.

[0010] In some embodiments of the present utility model, in the first direction, the second electromagnetic component is located between the first guiding member and the second guiding member.

[0011] In some embodiments of the present utility model, the linear motion component is provided with a first guiding portion and a second guiding portion spaced apart along the first direction, the first guiding member is arranged between the first guiding portion and the first electromagnetic component, and the second guiding member is arranged between the second guiding portion and the first electromagnetic component.

[0012] In some embodiments of the present utility model, the first guiding member and / or the second guiding member is a bearing.

[0013] In some embodiments of the present utility model, the second guiding component includes: a guiding rod arranged on the housing and a first guiding groove arranged on the linear motion component.

[0014] In some embodiments of the present utility model, the second guiding component further includes: a third guiding member arranged between the guiding rod and the first guiding groove.

[0015] In some embodiments of the present utility model, the third guiding member is a bearing.

[0016] In some embodiments of the present utility model, the guiding rod has a mounting portion, the diameter of the mounting portion is smaller than the diameter of the guiding rod, and the third guiding member is sleeved on the mounting portion.

[0017] In some embodiments of the present utility model, a limiting portion is provided at the bottom of the first guiding groove, and the limiting portion is used to limit the movement of the guiding rod towards the bottom of the first guiding groove.

[0018] In some embodiments of the present utility model, a guiding post is provided at the bottom of the first guiding groove, the limiting portion is sleeved on the guiding post, and a second guiding groove cooperating with the guiding post is provided on the guiding rod.

[0019] In some embodiments of the present utility model, the linear motion component includes a first moving bracket and a second moving bracket detachably connected along a first direction. The first moving bracket has a first opening and a second opening at both ends in the first direction, and the guiding post is provided on the second moving bracket.

[0020] In some embodiments of the present utility model, the linear motion component includes a first moving bracket and a second moving bracket detachably connected along a first direction. The first guiding portion is provided on the first moving bracket, and the second guiding portion is provided on the second moving bracket.

[0021] In some embodiments of the present utility model, a first threaded connection portion is provided on the first moving bracket, a second threaded connection portion is provided on the second moving bracket, and the first threaded connection portion and the second threaded connection portion are threadedly connected.

[0022] In some embodiments of the present utility model, in a second direction, the projection of the first guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member and the second electromagnetic member, and the projection of the second guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member and the second electromagnetic member, wherein the first direction and the second direction are perpendicular to each other.

[0023] In some embodiments of the present utility model, a recess is provided on the inner wall of the housing, and the first electromagnetic member is provided in the recess.

[0024] In some embodiments of the present utility model, at least part of the first guiding assembly is provided in the recess.

[0025] In some embodiments of the present utility model, in the first direction, at least one end of the first guiding assembly abuts against the side wall of the recess.

[0026] In some embodiments of the present utility model, in the first direction, the length of the first guiding assembly is greater than the length of the first electromagnetic member.

[0027] In some embodiments of the present utility model, the first electromagnetic member includes: a plurality of axially magnetized permanent magnet elements and a plurality of radially magnetized permanent magnet elements, and in the first direction, the plurality of axially magnetized permanent magnet elements and the plurality of radially magnetized permanent magnet elements are alternately arranged.

[0028] In some embodiments of the present utility model, the second electromagnetic member includes: an electromagnetic coil.

[0029] The present utility model also provides a suspension assembly having the actuator of the above embodiments.

[0030] According to the suspension assembly of the embodiments of the present utility model, by providing the actuator of the above embodiments, the suspension assembly can have a better damping effect, and the damping is stable and reliable.

[0031] The present utility model also provides a vehicle having the suspension assembly of the above embodiments.

[0032] The vehicle according to the embodiments of the present utility model includes a vehicle body, wheels and a suspension assembly. The suspension assembly is connected between the vehicle body and the wheels. By providing the suspension assembly of the above embodiments, the vehicle can have a better damping effect, and the damping is stable and reliable.

[0033] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0034] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0035] Figure 1 is a schematic structural view of an actuator according to an embodiment of the present utility model.

[0036] Figure 2 is a cross-sectional view of an actuator according to an embodiment of the present utility model.

[0037] Figure 3 is Figure 2 an enlarged view of area A in

[0038] Figure 4 is Figure 2 an enlarged view of area B in

[0039] Figure 5 is Figure 2 an enlarged view of area C in

[0040] Figure 6 is Figure 2 An enlarged view of region D in

[0041] Figure 7 is Figure 2 A schematic diagram of removing the electromagnetic component in

[0042] Figure 8 A cross-sectional view of the housing body of the actuator according to an embodiment of the present utility model.

[0043] Figure 9 A cross-sectional view of the guiding structure of the actuator according to an embodiment of the present utility model.

[0044] Reference numerals:

[0045] 100, actuator;

[0046] 1, housing; 11, housing body; 111, guiding rod; 112, mounting portion; 113, second guiding groove; 12, housing cover; 121, through hole; 13, recess

[0047] 2, linear motion component; 21, first moving bracket; 211, first guiding portion; 212, first guiding groove; 22, second moving bracket; 221, second guiding portion; 222, guide post; 223, guide rod

[0048] 3, electromagnetic assembly; 31, second electromagnetic component; 32, first electromagnetic component

[0049] 4, guiding structure;

[0050] 51, first guiding member; 52, second guiding member; 53, third guiding member; 54, fourth guiding member; 55, buffer member; 56, elastic element Detailed implementation manners

[0051] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the 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 drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0052] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0053] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0054] Next, refer to Figures 1 - 9 to describe the actuator 100 according to an embodiment of the present utility model.

[0055] As Figure 1 、 Figure 2 shown, the actuator 100 according to an embodiment of the present utility model includes a housing 1, a linear motion member 2, an electromagnetic assembly 3, a first guiding assembly, and a second guiding assembly. The linear motion member 2 is disposed in the housing 1 to linearly move along a first direction. The electromagnetic assembly 3 includes a first electromagnetic member 32 and a second electromagnetic member 31. The first electromagnetic member 32 is disposed on the housing 1, and the second electromagnetic member 31 is disposed on the linear motion member 2. The first electromagnetic member 32 and the second electromagnetic member 31 interact with each other to cause the housing 1 and the linear motion member 2 to linearly move along the first direction.

[0056] In one example, the actuator 100 can be used for the suspension assembly of a vehicle. Specifically, the housing 1 can be connected to the vehicle body, and the linear motion component 2 can be connected to the wheel. During the driving of the vehicle, the actuator 100 can be used as a suspension to adjust the vibration damping performance of the vehicle. For example, when the second electromagnetic component 31 is not energized, the linear motion component 2 can move in the first direction, thereby causing relative movement between the second electromagnetic component 31 and the first electromagnetic component 32, and an induced electromotive force is generated in the second electromagnetic component 31, so as to recover the vibration energy; when the second electromagnetic component 31 is energized, the second electromagnetic component 31 generates a magnetic field, and the energized second electromagnetic component 31 and the first electromagnetic component 32 magnetically attract each other, so that the damping when the linear motion component 2 moves in the first direction can be increased. Among them, as the current passed into the second electromagnetic component 31 increases, the magnetic field increases accordingly, and the damping when the linear motion component 2 moves in the first direction can be increased. On the contrary, as the current passed into the second electromagnetic component 31 decreases, the magnetic field weakens, and the damping when the linear motion component 2 moves in the first direction decreases. Thus, the magnitude of the current passed into the second electromagnetic component 31 can be controlled to control the damping when the linear motion component 2 moves in the first direction, thereby adjusting the vibration damping effect of the actuator 100. When the actuator is used for a vehicle, the ride comfort and handling performance of the vehicle can be improved preferably.

[0057] In this application, at least part of the structure of the first guiding component is arranged between the first electromagnetic component 32 and the second electromagnetic component 31, and the second guiding component is arranged between the housing 1 and the linear motion component 2. Thus, the linear motion component 2 can stably move in the first direction under the guiding action of the first guiding component and the second guiding component, and has good stability.

[0058] Moreover, in the direction from the second electromagnetic component 31 to the first electromagnetic component 32, the relative positions of the second electromagnetic component 31 and the first electromagnetic component 32 are not likely to change, which enables the second electromagnetic component 31 to stably generate an electromotive force when not energized, and enables the second electromagnetic component 31 to stably cooperate with the first electromagnetic component 32 to generate damping when the second electromagnetic component 31 is energized. Thus, it is beneficial for the actuator 100 to stably provide vibration damping for the vehicle, and the ride comfort and handling performance of the vehicle can be improved preferably.

[0059] According to the actuator 100 of the embodiments of the present utility model, at least part of the structure of the first guiding component is arranged between the first electromagnetic component 32 and the second electromagnetic component 31, and the second guiding component is arranged between the housing 1 and the linear motion component 2. This can enable the second electromagnetic component 31 and the linear motion component 2 to move stably along the first direction, reduce the generation of magnetic deviation force, thereby reducing the wear of the linear motion component 2, and improving the durability of the actuator 100. In the direction from the second electromagnetic component 31 to the first electromagnetic component 32, the relative positions of the second electromagnetic component 31 and the first electromagnetic component 32 are not likely to change. This can enable the second electromagnetic component 31 to stably generate an electromotive force when not energized, and when the second electromagnetic component 31 is energized, it can stably cooperate with the first electromagnetic component 32 to generate damping, which is beneficial for the actuator 100 to stably provide vibration damping for the vehicle, and can better improve the smoothness and controllability of the vehicle during driving.

[0060] In some embodiments of the present utility model, as Figure 2 and Figure 9 shown, the first guiding component includes a guiding structure 4. The guiding structure 4 is arranged on the surface of the first electromagnetic component 32 facing the second electromagnetic component 31, and the linear motion component 2 is adapted to move along the guiding surface of the guiding structure 4.

[0061] In this application, as Figure 2 shown, by arranging the guiding structure 4 on the side of the first electromagnetic component 32 facing the second electromagnetic component 31, the side of the guiding structure 4 facing the second electromagnetic component 31 has a guiding surface. In one example, the second electromagnetic component 31 can be in contact with the guiding surface and slide along the guiding surface. By arranging the guiding structure 4, the second electromagnetic component 31 can move more stably along the first direction, so that the linear motion component 2 can move stably along the first direction. Optionally, when the second electromagnetic component 31, the first electromagnetic component 32, and the guiding structure 4 are all cylindrical, by arranging the guiding structure 4 and making the second electromagnetic component 31 slide along the guiding surface, the movement of the second electromagnetic component 31 in the radial direction can be better reduced, which is beneficial to the stability of the second electromagnetic component 31 and the linear motion component 2. In one example, the linear motion component 2 is in contact with the guiding surface and can slide along the guiding surface. By arranging the guiding structure 4, the linear motion component 2 moves stably along the first direction, so that the second electromagnetic component 31 can also move stably along the first direction. In one example, both the second electromagnetic component 31 and the linear motion component 2 can be in contact with the guiding surface and slide along the guiding surface. Thus, both the second electromagnetic component 31 and the linear motion component 2 can move stably along the first direction.

[0062] In some embodiments of the present utility model, the first guiding assembly further includes a first guiding member 51 and a second guiding member 52. The first guiding member 51 and the second guiding member 52 are located between the first electromagnetic member 32 and the linear motion member 2 and are spaced apart along the first direction.

[0063] As Figures 2 - 4 shown, a first guiding member 51 is provided between the first guiding portion 211 and the guiding structure 4, and a second guiding member 52 is provided between the second guiding portion 221 and the guiding structure 4. That is to say, the linear motion member 2 does not directly contact the guiding structure 4, but by providing the first guiding member 51 and the second guiding member 52 between the linear motion member 2 and the guiding structure 4, and guiding the moving direction of the linear motion member 2 by the guiding cooperation between the first guiding member 51 and the second guiding member 52 and the guiding structure 4, the wear of the linear motion member 2 can be reduced, which is beneficial to extending the service life of the linear motion member 2 and can reduce the maintenance cost of the linear motion member 2. It can be understood that when the first guiding member 51 and the second guiding member 52 are worn to a certain extent, the first guiding member 51 and the second guiding member 52 can be directly replaced and repaired.

[0064] Optionally, in the first direction, the second electromagnetic member 31 is located between the first guiding member 51 and the second guiding member 52. The first guiding member 51 and the second guiding member 52 can preferably protect the second electromagnetic member 31 and enable the second electromagnetic member 31 to move stably along the first direction.

[0065] In some embodiments of the present utility model, as Figure 2 shown, the linear motion member 2 has a first guiding portion 211 and a second guiding portion 221. The first guiding portion 211 and the second guiding portion 221 are spaced apart along the first direction, and the first guiding portion 211 and the second guiding portion 221 are adapted to slide along the wall surface of the guiding structure 4.

[0066] Referring to a specific example shown in the attached Figure 2 figure, the second electromagnetic member 31 does not contact the guiding structure 4, and the linear motion member 2 contacts the guiding structure 4 through the first guiding portion 211 and the second guiding portion 221. By providing the first guiding portion 211 and the second guiding portion 221 spaced apart along the first direction on the linear motion member 2, it is beneficial for the linear motion member 2 to move well along the first direction, with good stability, the magnetic deflection force can be reduced, and further the wear of the linear motion member 2 can be reduced, and the durability of the actuator 100 can be improved.

[0067] Exemplarily, the first guiding portion 211 and the second guiding portion 221 can be arranged at both ends of the linear motion component 2 in the first direction, so as to further improve the stability of the linear motion component 2 when moving in the first direction. In addition, the second electromagnetic member 31 and the first electromagnetic member 32 do not contact each other, which can avoid the wear problem caused by friction or collision between the second electromagnetic member 31 and the first electromagnetic member 32, can extend the service life of the second electromagnetic member 31 and the first electromagnetic member 32, and can reduce the maintenance cost of the second electromagnetic member 31 and the first electromagnetic member 32. Moreover, the non-contact design of the second electromagnetic member 31 and the first electromagnetic member 32 can reduce the failure points between the second electromagnetic member 31 and the first electromagnetic member 32, and can improve the overall safety. In addition, since the second electromagnetic member 31 and the first electromagnetic member 32 do not contact each other, it can also reduce the noise generated by friction or collision.

[0068] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the housing 1 is a cylindrical structure surrounding the straight line in the first direction. Thus, the second electromagnetic member 31, the first electromagnetic member 32 and the guiding structure 4 can be preferably arranged in the circumferential direction of the housing 1. The arrangement areas of the second electromagnetic member 31, the first electromagnetic member 32 and the guiding structure 4 are relatively large, which can preferably improve the vibration damping effect of the actuator 100. Moreover, the occupied space of the cylindrical housing 1 is relatively small, which is beneficial to the arrangement of the actuator.

[0069] In one example, both the second electromagnetic member 31 and the first electromagnetic member 32 are annular structures coaxial with the axis of the housing 1. Thus, the second electromagnetic member 31 and the first electromagnetic member 32 can make better use of the space inside the housing 1.

[0070] In one example, the first guiding member 51 and / or the second guiding member 52 is a bearing. Exemplarily, the guiding structure 4 is an annular structure coaxial with the axis of the housing 1. The first guiding member 51 is a first sliding bearing, and the second guiding member 52 is a second sliding bearing. Optionally, both the first sliding bearing and the second sliding bearing can be fixed on the linear motion component 2 by interference fit. Specifically, the first sliding bearing is fixed on the first guiding portion 211 of the linear motion component 2 by interference fit, and the second sliding bearing is fixed on the second guiding portion 221 of the linear motion component 2 by interference fit. Through the above design, the movement of the linear motion component 2 in the radial direction can be better reduced, which is beneficial for the linear motion component 2 to stably move along the first direction. For a sliding bearing, since there is no rolling of rolling elements during operation, the generated noise is relatively low. The sliding bearing can bear a large load, especially suitable for working conditions with heavy loads and impact loads. Under appropriate lubrication conditions, due to the low friction coefficient, the sliding bearing wears slowly and can have a long working life. The sliding bearing has a high tolerance for metal foreign objects and is not easily damaged prematurely due to the invasion of impurities, and is suitable for harsh working conditions.

[0071] In some embodiments of the present invention, the second guiding assembly includes: a guiding rod 111 provided on the housing 1 and a first guiding groove 212 provided on the linear motion component 2. As Figure 2 shown, a guiding rod 111 extending along the first direction is provided inside the housing 1, and a first guiding groove 212 cooperating with the guiding rod 111 is provided on the linear motion component 2.

[0072] Referring to a specific example shown in the attached Figure 2 and Figure 5 The guiding rod 111 is a cylindrical structure coaxial with the axis of the housing 1, and a first guiding groove 212 cooperating with the guiding rod is provided inside the linear motion component 2. Thus, a first guiding portion 211 and a second guiding portion 221 are provided on the outer peripheral side of the linear motion component 2. The first guiding portion 211 and the second guiding portion 221 can be in guiding cooperation with the guiding surface of the guiding structure 4, so as to form the limit and guiding of the outer peripheral side of the linear motion component 2. Then, a first guiding groove 212 is provided inside the linear motion component 2 and the first guiding groove 212 is made to cooperate with the guiding rod 111, so as to form the limit and guiding of the inside of the linear motion component 2, which can further make the linear motion component 2 stably move along the first direction.

[0073] Optionally, the first guide groove 212 can also be provided at other positions of the linear motion component 2. For example, the housing 1 is cylindrical around the straight line in the first direction, and the axis of the guide rod 111 does not coincide with the axis of the housing 1. Such a design can also limit and guide the movement of the linear motion component 2 in the first direction. Optionally, multiple guide rods 111 and multiple first guide grooves 212 can also be provided, and the multiple guide rods 111 and the multiple first guide grooves 212 are in one-to-one correspondence and cooperation.

[0074] Therefore, in summary of the above examples, the present application does not limit the quantity and position of the guide rod 111 and the first guide groove 212.

[0075] In some examples of the present utility model, the second guiding assembly further includes: a third guiding member 53 disposed between the guide rod 111 and the first guide groove 212. As Figure 2 and Figure 5 shown, a third guiding member 53 is disposed between the guide rod 111 and the first guide groove 212, that is to say, the guide rod 111 and the first guide groove 212 do not directly contact each other. Thereby, the mutual wear between the guide rod 111 and the first guide groove 212 can be reduced, the service life of the guide rod 111 and the first guide groove 212 can be improved, and the third guiding member 53 can be replaced or repaired after a certain degree of wear, which can reduce costs.

[0076] Optionally, the third guiding member 53 is a bearing. Exemplarily, the third guiding member 53 is a third sliding bearing fixed on the guide rod 111. Referring to a specific example shown in the attached Figures 2 - 5 figure, the guide rod 111 is cylindrical and coaxial with the axis of the housing 1, a first guide groove 212 cooperating with the guide rod 111 is provided in the linear motion component 2, the third sliding bearing can be fixed on the guide rod 111, and through the cooperation between the guide rod 111 and the third sliding bearing, the linear motion component 2 can move well along the first direction.

[0077] In some examples of the present utility model, as Figure 2 , Figure 5 and Figure 7 shown, an installation portion 112 is provided at the end of the guide rod 111, the diameter of the installation portion 112 is smaller than the diameter of the guide rod 111, and the third sliding bearing is sleeved on the installation portion 112. Optionally, the third sliding bearing can be fixed on the installation portion 112 by an interference fit, and after the third sliding bearing abuts against the first guide groove 212, the wall surface of the first guide groove 212 can also be spaced apart from the guide rod 111, thereby better reducing the friction between the first guide groove 212 and the guide rod 111.

[0078] In some examples of the present utility model, a limiting portion is provided at the bottom of the first guide groove 212, and the limiting portion is used to limit the movement of the guide rod 111 towards the bottom of the first guide groove 212. The limiting portion is a buffer member 55.

[0079] As Figure 2 and Figure 7 shown, a buffer member 55 is provided at the bottom of the first guide groove 212. Thus, when the linear motion member 2 moves along the first direction, the guide rod 111 can reduce the collision with the linear motion member 2 through the buffering effect of the buffer member 55. Optionally, the buffer member 55 can be a structure such as a sponge or a spring that can undergo shape deformation.

[0080] Optionally, as Figure 2 and Figure 8 shown, a guide post 222 extending along the first direction is provided at the bottom of the first guide groove 212. The buffer member 55 is sleeved on the guide post 222, and a second guide groove 113 cooperating with the guide post 222 is provided on the guide rod 111. Thus, the buffer member 55 can be deformed stably along the guide post 222, with good stability, so that the buffering action on the first guide groove 212 and the guide rod 111 can be better performed.

[0081] Referring to Figure 2 and Figure 8 a specific example shown, a second guide groove 113 cooperating with the guide post 222 is provided at the end of the guide rod 111 facing the bottom of the first guide groove 212. When the guide rod 111 presses the buffer member 55, through the cooperation of the guide post 222 and the second guide groove 113, the relative movement between the guide rod 111 and the linear motion member 2 can be better limited. That is, the guide post 222 can also make the linear motion member 2 move stably along the first direction.

[0082] Optionally, as Figure 2 and Figure 7 shown, the linear motion member 2 includes a first moving bracket 21 and a second moving bracket 22 detachably connected along the first direction. The first moving bracket 21 has a first opening and a second opening at both ends in the first direction. The second moving bracket 22 is installed at the second opening, and the second moving bracket 22 closes the second opening. The first moving bracket 21 and the second moving bracket 22 construct a first guide groove 212 with a first opening, and a guide post 222 is provided on the second moving bracket 22.

[0083] Referring to as Figure 2 and Figure 7As a specific example shown, the housing 1 is a cylindrical structure surrounding the straight line in the first direction. The first moving bracket 21 includes a bracket body and a first guiding portion 211. The second electromagnetic member 31 is installed on the bracket body. The bracket body is an annular structure coaxial with the axis of the housing 1. The first guiding portion 211 is located at the end of the bracket body away from the first moving bracket 21. The second moving bracket 22 includes a second guiding portion 221 and a guide rod 223. The second guiding portion 221 is detachably connected to the bracket body. The second bracket body is used to close the second opening. A guide post 222 is provided on the second guiding portion 221. One end of the guide rod 223 is connected to the second guiding portion 221, and the other end of the guide rod 223 can extend out of the housing 1.

[0084] Optionally, a first threaded connection portion is provided on the first moving bracket 21, and a second threaded connection portion is provided on the second moving bracket 22. The first threaded connection portion and the second threaded connection portion are threadedly connected. Exemplarily, the bracket body of the first moving bracket 21 has an external thread, and the second guiding portion 221 of the second moving bracket 22 has an internal thread. Thus, the first moving bracket 21 and the second moving bracket 22 can be connected by a threaded connection method, and the connection method is simple and convenient. In some examples, the first moving bracket 21 and the second moving bracket 22 can also be connected by other detachable connection methods, such as screwing, clamping, etc., and the present application does not make any restrictions.

[0085] In the present application, by making the first moving bracket 21 and the second moving bracket 22 detachably connected, it is convenient to install the annular second electromagnetic member 31 on the outer peripheral side of the bracket body.

[0086] In some embodiments of the present invention, as Figure 2 and Figure 7 shown, the first guiding portion 211 is provided on the first moving bracket 21. The first guiding portion 211 can preferably guide the first moving bracket 21. The second guiding portion 221 is provided on the second moving bracket 22. The second guiding portion 221 can preferably guide the second moving bracket 22. Thus, by respectively providing the first guiding portion 211 and the second guiding portion 221 on the first moving bracket 21 and the second moving bracket 22, the detachably connected first moving bracket 21 and second moving bracket 22 can both be preferably guided, so that the linear motion component 2 constructed by the first moving bracket 21 and the second moving bracket 22 can move more stably along the first direction.

[0087] In some embodiments of the present utility model, in the second direction, the projection of the first guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member 32 and the second electromagnetic member 31, and the projection of the second guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member 32 and the second electromagnetic member 31, wherein the first direction and the second direction are perpendicular to each other.

[0088] Exemplarily, in the second direction, the projection of the first guiding assembly overlaps at least partially with the projection of the first electromagnetic member 32.

[0089] Exemplarily, in the second direction, the projection of the first guiding assembly overlaps at least partially with the projection of the second electromagnetic member 31.

[0090] Exemplarily, in the second direction, the projection of the first guiding assembly overlaps at least partially with the projection of the first electromagnetic member 32 and the projection of the first guiding assembly overlaps at least partially with the projection of the second electromagnetic member 31.

[0091] Exemplarily, in the second direction, the projection of the second guiding assembly overlaps at least partially with the projection of the first electromagnetic member 32.

[0092] Exemplarily, in the second direction, the projection of the second guiding assembly overlaps at least partially with the projection of the second electromagnetic member 31.

[0093] Exemplarily, in the second direction, the projection of the second guiding assembly overlaps at least partially with the projection of the first electromagnetic member 32 and the projection of the first guiding assembly overlaps at least partially with the projection of the second electromagnetic member 31.

[0094] In the above examples, by making the projections overlap at least partially, the second electromagnetic member 31 and the linear motion component 2 can be effectively guided, the motion smoothness of the linear motion component 2 can be improved, and the linear motion component 2 can also be limited by the first electromagnetic member 32 and the second electromagnetic member 31, which can improve the structural compactness.

[0095] In some embodiments of the present utility model, a through hole 121 penetrating the end plate is provided on the end plate at one end of the housing 1 in the first direction, and the linear motion component 2 includes a guide rod 223 slidably fitted in the through hole 121.

[0096] Referring to the examples as Figure 2 and Figure 6 shown, the housing 1 includes a housing body 11 and a cover plate. The housing body 11 has an opening, and the cover plate is covered on the opening. A through hole 121 penetrating the cover plate is provided on the cover plate, and the guide rod 223 of the linear motion component 2 can extend out of the through hole 121 of the cover plate to the outside.

[0097] In one example, the housing 1 includes a housing body 11 and a cover plate. The housing body 11 has an opening, and the cover plate is disposed on the opening. A through hole 121 penetrating the end plate is provided on the end plate of the housing body 11 away from the cover plate, and the guide rod 223 of the linear motion component 2 can extend out of the through hole 121 to the outside.

[0098] Optionally, as Figure 2 and Figure 6 shown, a fourth guiding member 54 is disposed between the guide rod 223 and the through hole 121. By providing the fourth guiding member 54, the mutual wear between the guide rod 223 and the through hole 121 can be reduced, which is beneficial to improving the service life of the guide rod 223 and the housing 1.

[0099] Optionally, the fourth guiding member 54 is a fourth sliding bearing. The fourth sliding bearing can be fixed in the through hole 121 by an interference fit. The fourth sliding bearing can preferably guide the guide rod 223, so that the linear motion component 2 can stably move along the first direction.

[0100] In some embodiments of the present invention, as Figure 2 and Figure 6 shown, the housing 1 includes a housing body 11 and a housing cover 12. One end of the housing body 11 in the first direction has an opening, and the housing cover 12 is detachably mounted on the opening. A through hole 121 is provided on the housing cover 12, and a guide rod 111 extending along the first direction is provided in the housing body 11. A first guide groove 212 cooperating with the guide rod 111 is provided at one end of the linear motion component 2 away from the guide rod 223. Thus, one end of the linear motion component 2 is limited and guided by the cooperation of the guide rod 223 and the through hole 121, and the other end of the linear motion component 2 is guided by the cooperation of the guide rod 111 and the first guide groove 212, which can effectively guide the linear motion component 2 as a whole and enable the linear motion component 2 to stably reciprocate along the first direction.

[0101] In some embodiments of the present invention, as Figure 2 , Figure 7 and Figure 8 shown, a concave portion 13 is provided on the inner wall of the housing 1, and the first electromagnetic member 32 is disposed in the concave portion 13. Thus, the wall thickness of the housing 1 can be preferably utilized to optimize the layout of the internal structure of the housing 1, and the volume of the actuator 100 can also be reduced to a certain extent.

[0102] Optionally, at least a part of the first guiding component is disposed within the recess 13. Exemplarily, at least a part of the guiding structure 4 is disposed within the recess 13. That is to say, the guiding structure 4 may also be entirely installed within the recess 13. Of course, a part of the guiding structure 4 may also be located outside the recess 13 according to requirements, so as to better abut against the linear motion component 2 and better guide the linear motion component 2. In one example, the guiding structure 4 is a cylindrical structure, and the inner wall surface of the guiding structure 4 is coplanar with the inner wall surface of the housing 1.

[0103] In some embodiments of the present utility model, as Figure 2 and Figure 8 shown, in the first direction, at least one end of the first guiding component abuts against the side wall of the recess 13. Exemplarily, at least one end of the guiding structure 4 abuts against the side wall of the recess 13. That is to say, one end of the guiding structure 4 may abut against the side wall of the recess 13, and both ends of the guiding structure 4 may abut against the side wall of the recess 13. Thereby, it is beneficial to the installation and fixation of the guiding structure 4.

[0104] Optionally, the guiding structure 4 may be bonded within the recess 13 by structural adhesive, and the first electromagnetic component 32 may be bonded within the recess 13 by structural adhesive.

[0105] In some embodiments of the present utility model, as Figure 2 and Figure 7 shown, in the first direction, the length of the first guiding component is greater than the length of the first electromagnetic component 32. Exemplarily, the length of the guiding structure 4 is greater than the length of the first electromagnetic component 32. Thereby, the guiding structure 4 can better guide the linear motion component 2, and at the same time, the guiding structure 4 can also better protect the first electromagnetic component 32 and can better reduce the damage of the first electromagnetic component 32.

[0106] In some embodiments of the present utility model, the second electromagnetic component 31 is fixed on the linear motion component 2 by structural adhesive, and the first electromagnetic component 32 is fixed on the housing 1 by structural adhesive. The assembly method is simple and convenient.

[0107] In some embodiments of the present utility model, the guiding structure 4 is fixed on the first electromagnetic component 32 by structural adhesive. The assembly method is simple and convenient.

[0108] In some embodiments of the present utility model, the first electromagnetic member 32 includes: a plurality of axially magnetized permanent magnet elements and a plurality of radially magnetized permanent magnet elements. Among them, an axially magnetized permanent magnet element refers to a magnet in which, during the manufacturing process, the magnetization field is applied along the axial direction of the magnet (i.e., along the length direction of the magnet), so that the magnetization direction of the magnet is consistent with the geometric axis of the magnet. A radially magnetized permanent magnet element refers to a magnet in which, during the production process, the magnetization field is applied along the radial direction of the magnet, such that the magnetic field lines radiate from the outer periphery to the center or from the center to the outer periphery in the circumferential direction.

[0109] In the first direction, the plurality of axially magnetized permanent magnet elements and the plurality of radially magnetized permanent magnet elements are alternately arranged, which can achieve the magnetic field superposition in three-dimensional directions in space, forming a more complex magnetic field distribution. Optimize the magnetic flux path inside the motor or generator, improve the magnetic permeability, reduce magnetic leakage, thereby enhancing the efficiency and power density. By optimizing the magnetic circuit design, while maintaining the output performance, the overall size and weight of the motor or device can be reduced.

[0110] Optionally, the second electromagnetic member 31 may include an iron core and an electromagnetic coil, and the electromagnetic coil is disposed on the iron core. In other embodiments, the first guiding portion 211 or the second guiding portion 221 may also be disposed on the iron core. When current passes through the electromagnetic coil, a magnetic field will be generated around the coil. The electromagnetic coil is a three-phase coil. The three-phase coil is composed of three independent electromagnetic coils, and each coil is connected to one phase of the three-phase power supply. These three coils are usually arranged at an electrical angle interval in space. Such a design can generate a rotating magnetic field, which is the basis of the working principle of a three-phase motor (such as a three-phase asynchronous motor). In a three-phase system, this configuration can provide smooth and stable power output, and has higher efficiency and power output capacity compared with a single-phase system. In addition, the three-phase coil can also achieve self-starting and good overload capacity without additional starting devices.

[0111] The present utility model also proposes a suspension assembly having the actuator 100 of the above embodiments.

[0112] According to the suspension assembly of the embodiments of the present utility model, by providing the actuator 100 of the above embodiments, the suspension assembly can have a good damping effect, and the damping is stable and reliable.

[0113] The present utility model also proposes a vehicle having the suspension assembly of the above embodiments.

[0114] The vehicle according to the embodiments of the present utility model includes a vehicle body, wheels, and a suspension assembly. The suspension assembly is connected between the vehicle body and the wheels. By providing the suspension assembly of the above embodiments, the vehicle can have a good damping effect, and the damping is stable and reliable.

[0115] The actuator 100 provided by the present application can achieve full-active real-time adjustment of the suspension assembly, with fast response time, large thrust, high speed, and high response frequency. During vehicle driving, it can significantly improve the driving experience of the passengers in the vehicle.

[0116] The present application adopts an electromagnetic solution in which axially magnetized permanent magnet elements and radially magnetized permanent magnet elements are alternately arranged adjacent to each other axially to the required height to form a first electromagnetic member 32 as a stator, and a second electromagnetic member 31 is internally provided as a rotor. Under the constraint conditions of limited space, a larger air-gap diameter can be obtained, so that a larger active thrust can be provided.

[0117] The present application adopts an internal scheme of an elastic element 56 (spring). On the premise of ensuring the effective stroke of the actuator 100, it is beneficial to control the maximum radial dimension and the maximum axial dimension of the actuator 100 within a reasonable range.

[0118] The present patented technology provides two combined schemes of the guiding structures 4, which can further ensure the coaxiality between the rotor assembly and the stator assembly during the movement process, is beneficial to reducing the magnetic deviation force, thereby reducing the lateral force of the rotor assembly on the stator assembly, reducing the wear of the parts of the sliding part, and improving the durability of the actuator 100.

[0119] The other components and operations of the actuator 100, the suspension assembly and the vehicle according to the embodiments of the present utility model are known to those of ordinary skill in the art, and will not be described in detail here.

[0120] In the description of this specification, the descriptions with reference to terms such as "some embodiments", "optionally", "further" or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0121] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. An actuator (100), characterized in that, Comprising: A housing (1); A linear motion component (2), which is linearly movable in a first direction and arranged within the housing (1); An electromagnetic assembly (3), which includes a first electromagnetic member (32) and a second electromagnetic member (31). The first electromagnetic member (32) is arranged on the housing (1), and the second electromagnetic member (31) is arranged on the linear motion component (2). The first electromagnetic member (32) and the second electromagnetic member (31) interact with each other to linearly move the housing (1) and the linear motion component (2) in the first direction; A first guiding assembly and a second guiding assembly. At least part of the structure of the first guiding assembly is arranged between the first electromagnetic member (32) and the second electromagnetic member (31), and the second guiding assembly is arranged between the housing (1) and the linear motion component (2).

2. The actuator (100) according to claim 1, characterized in that, The first guiding assembly includes a guiding structure (4), which is arranged on the surface of the first electromagnetic member (32) facing the second electromagnetic member (31). The linear motion component (2) is adapted to move along the guiding surface of the guiding structure (4).

3. The actuator (100) according to claim 1 or 2, characterized in that, The first guiding assembly further includes a first guiding member (51) and a second guiding member (52). The first guiding member (51) and the second guiding member (52) are located between the first electromagnetic member (32) and the linear motion component (2) and are spaced apart in the first direction.

4. The actuator (100) according to claim 3, characterized in that, In the first direction, the second electromagnetic member (31) is located between the first guiding member (51) and the second guiding member (52).

5. The actuator (100) according to claim 3, characterized in that, On the linear motion component (2), a first guiding portion (211) and a second guiding portion (221) are arranged at intervals in the first direction. The first guiding member (51) is arranged between the first guiding portion (211) and the first electromagnetic member (32), and the second guiding member (52) is arranged between the second guiding portion (221) and the first electromagnetic member (32).

6. The actuator (100) according to claim 3, characterized in that, The first guiding member (51) and / or the second guiding member (52) is a bearing.

7. The actuator (100) according to claim 1, characterized in that, The second guiding assembly includes: a guiding rod (111) arranged on the housing (1) and a first guiding groove (212) arranged on the linear motion component (2).

8. The actuator (100) according to claim 7, characterized in that, The second guiding assembly further includes: a third guiding member (53) arranged between the guiding rod (111) and the first guiding groove (212).

9. The actuator (100) according to claim 8, characterized in that, The third guiding member (53) is a bearing.

10. The actuator (100) according to claim 8, characterized in that, The guiding rod (111) has a mounting portion (112), the diameter of the mounting portion (112) is smaller than the diameter of the guiding rod (111), and the third guiding member (53) is sleeved on the mounting portion (112).

11. The actuator (100) according to claim 8, characterized in that, A limiting portion is arranged at the bottom of the first guiding groove (212), and the limiting portion is used to limit the movement of the guiding rod (111) towards the bottom of the first guiding groove (212).

12. The actuator (100) according to claim 11, characterized in that, The limiting portion is a buffer member (55).

13. The actuator (100) according to claim 11, characterized in that, A guide post (222) is provided at the bottom of the first guide groove (212). The limiting part is sleeved on the guide post (222), and a second guide groove (113) cooperating with the guide post (222) is provided on the guide rod (111).

14. The actuator (100) according to claim 13, characterized in that, The linear motion component (2) includes a first moving bracket (21) and a second moving bracket (22) detachably connected along a first direction. The first moving bracket (21) has a first opening and a second opening at both ends in the first direction, and the second moving bracket (22) is installed at the second opening. The guide post (222) is provided on the second moving bracket (22).

15. The actuator (100) according to claim 5, characterized in that, The linear motion component (2) includes a first moving bracket (21) and a second moving bracket (22) detachably connected along a first direction. The first guiding part (211) is provided on the first moving bracket (21), and the second guiding part (221) is provided on the second moving bracket (22).

16. The actuator (100) according to claim 14 or 15, characterized in that, A first threaded connection part is provided on the first moving bracket (21), and a second threaded connection part is provided on the second moving bracket (22). The first threaded connection part and the second threaded connection part are threadedly connected.

17. The actuator (100) according to any one of claims 1-16, characterized in that, In a second direction, the projection of the first guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member (32) and the second electromagnetic member (31), and the projection of the second guiding assembly overlaps at least partially with the projection of at least one of the first electromagnetic member (32) and the second electromagnetic member (31), wherein the first direction and the second direction are perpendicular to each other.

18. The actuator (100) according to claim 1, characterized in that, A recess (13) is provided on the inner wall of the housing (1), and the first electromagnetic member (32) is provided in the recess (13).

19. The actuator (100) according to claim 18, characterized in that, At least a part of the first guiding assembly is provided in the recess (13).

20. The actuator (100) according to claim 19, characterized in that, In the first direction, at least one end of the first guiding assembly abuts against the side wall of the recess (13).

21. The actuator (100) according to claim 1, characterized in that, In the first direction, the length of the first guiding assembly is greater than the length of the first electromagnetic member (32).

22. The actuator (100) according to claim 1, characterized in that, The first electromagnetic member (32) includes: a plurality of axially magnetized permanent magnet elements and a plurality of radially magnetized permanent magnet elements. In the first direction, the plurality of axially magnetized permanent magnet elements and the plurality of radially magnetized permanent magnet elements are arranged alternately.

23. The actuator (100) according to claim 1, characterized in that, The second electromagnetic member (31) includes: an electromagnetic coil.

24. A suspension assembly, characterized in that, Including the actuator (100) according to any one of claims 1-23.

25. A vehicle, characterized in that, Including: A vehicle body and wheels; The suspension assembly according to claim 24, the suspension assembly being connected between the vehicle body and the wheels.

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