Actuator, suspension system and vehicle

Abstract

The embodiment of the utility model provides an actuator, a suspension system and a vehicle, the actuator comprises a first shell and a second shell, and the first shell and the second shell define a containing cavity with an opening; the guide rod is arranged in the accommodating cavity and is fixedly connected to the first shell; the guide rod is sleeved with the iron core, the iron core and the first shell are arranged at intervals in the axial direction of the guide rod, and the iron core can move in the axial direction of the guide rod; the displacement detection element comprises a stator and a rotor, the stator is fixedly connected to the guide rod, and the rotor is fixedly connected to the iron core and movably connected to the stator. According to the actuator provided by the embodiment of the invention, the stator and the rotor of the displacement detection element are both arranged in the shell of the actuator, and the function of monitoring the displacement of the actuator by the displacement detection element is realized in a limited internal space, so that the structure of the actuator is more compact, and the space utilization rate of the actuator is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of vehicle manufacturing, and specifically relates to an actuator, a suspension system and a vehicle. Background Art

[0002] The actuator plays a key role in the vehicle active suspension system. The actuator is equipped with a displacement detection element, which is used to monitor the distance or displacement between the vehicle body and the ground, and output a voltage signal to control the actuator, thereby adjusting the height and stiffness of the suspension.

[0003] In the related art, a displacement detection element is partially located outside the movement stroke of the actuator, so that the displacement detection element occupies a large space, which is not conducive to the layout design of the suspension system. Utility Model Content

[0004] The present application aims to provide an actuator, a suspension system and a vehicle to solve the problem of space occupation by a displacement detection element in an existing actuator.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses an actuator, comprising:

[0007] case;

[0008] A guide rod, the guide rod is fixedly disposed in the housing;

[0009] An iron core, the iron core is arranged in the housing and outside the guide rod, and the iron core can move along the axial direction of the guide rod;

[0010] The displacement detection element comprises a stator and a mover, wherein the stator is fixedly connected to the guide rod, and the mover is fixedly connected to the iron core.

[0011] Optionally, a side wall of the guide rod is provided with a recessed first mounting portion, and the stator is fixedly connected to the first mounting portion.

[0012] Optionally, the stator includes a first inner side surface and a first outer side surface radially opposite to each other along the guide rod, and the first inner side surface and the first outer side surface respectively cooperate with the first mounting portion and the mover, wherein the first inner side surface is a plane and the first outer side surface is a curved surface.

[0013] Optionally, the stator is provided with a first mounting hole, the guide rod is provided with a second mounting hole adapted to the first mounting hole, and the stator further includes a first fastener, which passes through the first mounting hole and is fixed to the second mounting hole to fix the stator to the guide rod.

[0014] Optionally, the number of the first mounting holes is plural, and the plural first mounting holes are arranged at intervals in the circumferential direction of the stator.

[0015] Optionally, the stator includes two ends axially departing from each other along the guide rod, the number of the first mounting holes is plural, and the plural first mounting holes are respectively arranged at the two ends of the stator.

[0016] Optionally, the iron core is provided with a recessed second mounting portion, and the mover is fixedly connected to the second mounting portion.

[0017] Optionally, the mover includes a second inner side surface and a second outer side surface radially departing from each other along the guide rod, and the second inner side surface and the second outer side surface are respectively matched with the stator and the second mounting portion, wherein both the second inner side surface and the second outer side surface are curved surfaces.

[0018] Optionally, the mover is provided with a third mounting hole, the iron core is provided with a fourth mounting hole adapted to the third mounting hole, and the mover further includes a second fastener, and the second fastener passes through the third mounting hole and is fixed to the fourth mounting hole to fixedly connect the mover to the iron core.

[0019] Optionally, the number of the third mounting holes is plural, and the plural third mounting holes are arranged at intervals in the circumferential direction of the mover.

[0020] Optionally, the displacement detection element includes any one of a Hall displacement detection element, a grating scale displacement detection element, and a magnetic grating scale displacement detection element.

[0021] Optionally, the fixed connection between the stator and the guide rod includes at least one of threaded connection, welding, bonding, riveting, and interference fit, and the fixed connection between the mover and the iron core includes at least one of threaded connection, welding, bonding, riveting, and interference fit.

[0022] Optionally, the actuator further includes an elastic member and a push rod, the housing includes a first housing and a second housing, the first housing and the second housing enclose a receiving cavity with an opening, the guide rod is connected to the first housing, the elastic member is sleeved on the guide rod and connected between the first housing and the iron core, the push rod is connected to an end of the iron core axially departing from the first housing, and the iron core moves axially under the action of the elastic member and the push rod.

[0023] Optionally, the actuator further includes a lower end cover, the lower end cover is connected to the opening of the receiving cavity and seals the receiving cavity, and an end of the push rod away from the iron core passes through the lower end cover and is adapted to be connected to the wheel end.

[0024] Optionally, the actuator further includes a magnetic member and a winding. The magnetic member is connected to the inner side wall of the second housing, the winding is disposed on the iron core and is disposed opposite to the magnetic member along the radial direction of the second housing, and the magnetic member interacts with the winding to cause the iron core to move.

[0025] In a second aspect, the present application further discloses a suspension system, including: a control unit, and the actuator as described above. The control unit is electrically connected to the displacement detection element. Wherein, the displacement detection element is used to detect the relative displacement between the mover and the stator, and transmit the displacement information to the control unit. The control unit receives the displacement information from the displacement detection element and controls the movement of the actuator.

[0026] In a third aspect, the present application further discloses a vehicle, including the actuator as described above, or the suspension system as described above.

[0027] In the embodiment of the present application, the guide rod is fixedly disposed in the housing, the iron core is disposed in the housing and outside the guide rod, the iron core can move along the axial direction of the guide rod, the stator of the displacement detection element is fixedly connected to the guide rod, and the mover is fixedly connected to the iron core. In this way, when the iron core moves along the axial direction of the guide rod, the mover of the displacement detection element will move axially relative to the stator as the iron core moves. The displacement detection element can output a voltage signal by reading the displacement of the mover in the axial direction of the stator to control the actuator. Through the actuator provided by the embodiment of the present application, both the stator and the mover of the displacement detection element are disposed inside the housing of the actuator, realizing the monitoring function of the displacement detection element for the displacement of the actuator in the limited internal space, making the structure of the actuator more compact, improving the space utilization rate of the actuator, and being beneficial to the layout of the suspension system.

[0028] Some of the additional aspects and advantages of the present application will be given in the following description, some will become apparent from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0029] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0030] Figure 1 is a schematic structural diagram of the actuator according to the embodiment of the present application;

[0031] Figure 2 is a sectional view taken along line A - A of the actuator according to the embodiment of the present application;

[0032] Figure 3 is a schematic structural diagram of the displacement detection element according to the embodiment of the present application;

[0033] Figure 4 is a schematic structural view of the housing described in the embodiments of the present application;

[0034] Figure 5 is a schematic structural view of the iron core described in the embodiments of the present application.

[0035] Reference numerals: 11 - top of the tower, 12 - wheel end, 20 - housing, 21 - first housing, 211 - connection part at the top of the tower, 22 - second housing, 221 - magnetic part, 30 - guide rod, 31 - first mounting part, 311 - second mounting hole, 40 - displacement detection element, 41 - stator, 411 - first mounting hole, 42 - rotor, 421 - third mounting hole, 50 - iron core, 501 - winding, 51 - second mounting part, 511 - fourth mounting hole, 52 - end plate, 53 - side plate, 60 - elastic part, 70 - push rod, 80 - lower end cover. Detailed Description of the Embodiments

[0036] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where 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 application and should not be construed as a limitation to the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0037] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0038] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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, and thus should not be construed as a limitation to the present application.

[0039] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] An embodiment of this application provides an actuator. The actuator provided by the embodiment of this application has a compact structure, improves the space utilization rate of the actuator, and is also beneficial to the layout of the suspension system.

[0041] The following further describes the actuator provided by the embodiment of this application in conjunction with the accompanying drawings and specific embodiments:

[0042] Refer to Figure 1 , which shows a schematic structural diagram of the actuator described in the embodiment of this application. Refer to Figure 2 , which shows an A-A cross-sectional view of the actuator described in the embodiment of this application.

[0043] As Figure 1 , Figure 2 shown, the actuator provided by the embodiment of this application may specifically include: a housing 20. Further, the housing 20 may include a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 enclose a receiving cavity with an opening, wherein the first housing 21 is used to connect to the top tower 11.

[0044] Specifically, please refer to Figure 4 , which shows a schematic structural diagram of the housing 20 described in the embodiment of this application. As Figure 4 shown, the second housing 22 is a cylindrical structure. The first housing 21 includes a circular top plate adapted to the second housing 22 and a top tower connection portion 211 protruding from the center of the top plate. Among them, the second housing 22 and the top plate of the first housing 21 enclose a receiving cavity with an opening, and the opening is located at one end of the second housing 22 away from the top plate. The top tower connection portion 211 is located outside the receiving cavity, and the top tower connection portion 211 can be connected to the body top tower 11 to realize the connection between the actuator and the body.

[0045] A guide rod 30, and the guide rod 30 is arranged in the receiving cavity and fixedly connected to the first housing 21. As Figure 4As shown, the guide rod 30 has a structure similar to a cylinder, and its axial direction is the same as that of the second housing 22. One end of the guide rod 30 in the axial direction is connected to the side of the top plate of the first housing 21 away from the tower top connection part 211, and the other end of the guide rod 30 in the axial direction is located in the accommodation cavity. A side wall is formed between the two ends of the guide rod 30. Among them, the first housing 21, the second housing 22, and the guide rod 30 can be integrally formed, or can be welded or bolted to form a whole as a part of the stator assembly of the actuator.

[0046] The iron core 50 is arranged in the accommodation cavity of the housing 20 and outside the guide rod 30, and is arranged at an axial interval from the first housing 21 along the axial direction of the guide rod 30. The iron core 50 can move along the axial direction of the guide rod 30.

[0047] Referring to Figure 5 , a schematic structural diagram of the iron core 50 according to an embodiment of the present application is shown. As Figure 5 shown, the iron core 50 includes an annular end plate 52 and a cylindrical side plate 53. The end plate 52 is connected to one end of the side plate 53 and is arranged close to the first housing 21. The side plate 53 is sleeved outside the guide rod 30, and is arranged at a radial gap with the guide rod 30 and at an axial interval from the first housing 21 along the axial direction of the guide rod 30. Thus, the iron core 50 can move along the axial direction of the guide rod 30.

[0048] The displacement detection element 40 includes a stator 41 and a mover 42. The stator 41 is fixedly connected to the guide rod 30, the mover 42 is fixedly connected to the iron core 50, and the mover 42 is also movably connected to the stator 41. The movement of the iron core 50 along the axial direction of the guide rod 30 can drive the mover 42 to generate a movement relative to the stator 41.

[0049] Referring to Figure 3 , a schematic structural diagram of the displacement detection element 40 according to an embodiment of the present application is shown. As Figure 3 shown, the displacement detection element 40 is a displacement sensor. The displacement detection element 40 includes a stator 41 and a mover 42. Among them, the stator 41 is fixedly connected to the guide rod 30 to form a part of the stator assembly of the actuator, and the mover 42 is fixedly connected to the iron core 50. Since the iron core 50 can move along the axial direction of the guide rod 30, therefore, the mover 42 can generate a synchronous movement with the movement of the iron core 50, and thus generate a movement relative to the stator 41.

[0050] It can be understood that both the guide rod 30 and the iron core 50 are arranged in the accommodation cavity of the housing 20. The stator 41 of the displacement detection element 40 is connected to the guide rod 30, and the mover 42 is connected to the iron core 50. Thus, the displacement detection element 40 as a whole is located in the accommodation cavity of the housing 20, making the structure of the actuator more compact and improving the space utilization rate of the actuator.

[0051] By way of example, the displacement detection element 40 can be a Hall sensor, a grating scale displacement sensor, a magnetic scale displacement sensor, etc., the stator 41 can be a magnetic strip, a grating scale, a magnetic scale, etc. in the above sensors, and the mover 42 can be a Hall element, a grating reader, a magnetic reader, etc. that are compatible with various types of stators. The present application does not specifically limit the type of the displacement detection element 40.

[0052] In the embodiment of the present application, the fixed connection between the stator 41 and the guide rod 30 includes at least one of threaded connection, welding, bonding, riveting, and interference fit, and the fixed connection between the mover and the iron core includes at least one of threaded connection, welding, bonding, riveting, and interference fit. The present application does not specifically limit the above fixed connection methods.

[0053] In an optional embodiment of the present application, a side wall of the guide rod 30 is provided with a recessed first mounting portion 31 , and the stator 41 is fixedly connected to the first mounting portion 31 .

[0054] like Figure 4 As shown, a portion of the side wall of the guide rod 30 is hollowed out to form a first mounting portion 31 for mounting the stator 41 of the displacement detecting element 40 .

[0055] In an optional embodiment of the present application, the stator 41 includes a first inner side surface and a first outer side surface which are arranged radially away from each other along the guide rod 30, and the first inner side surface and the first outer side surface are respectively matched with the first mounting portion 31 and the mover 42, wherein the first inner side surface is a plane and the first outer side surface is a curved surface, and accordingly, the first mounting portion 31 is a plane recessed in the outer wall of the guide rod 30. Since the iron core 50 also cooperates with the guide rod 30 and moves axially along the guide rod 30, the first mounting portion 31 is set as a plane recessed in the outer wall of the guide rod 30, and the stator 41 includes a first inner side surface which cooperates with the first mounting portion 31 and a first outer side surface which is separated from the first inner side surface. Since the first outer side surface is a curved surface, after the stator 41 is connected to the first mounting portion 31, the overall size can be controlled within the diameter range of the guide rod 30, thereby preventing the stator 41 from interfering with the movement of the iron core 50.

[0056] In an optional embodiment of the present application, the stator 41 is provided with a first mounting hole 411, and the first mounting portion 31 of the guide rod 30 is provided with a second mounting hole 311 adapted to the first mounting hole 411. The stator 41 also includes a first fastener, and the stator 41 is fixedly connected to the side wall of the guide rod 30 through the first fastener.

[0057] Specifically, the axial direction of the first mounting hole 411 is the same as the radial direction of the guide rod 30 , and the first fastener passes through the first mounting hole 411 and the second mounting hole 311 in sequence to finally fix the stator 41 to the first mounting portion 31 of the guide rod 30 .

[0058] In the embodiments of the present application, the number of the first mounting holes 411 can be set to be multiple, and the multiple first mounting holes 411 are arranged at intervals along the circumferential direction of the stator 41. The number and positions of the second mounting holes 311 are adapted to those of the first mounting holes 411, so as to enhance the connection strength between the stator 41 and the guide rod 30 and ensure the service life and reliability of the actuator.

[0059] In an alternative embodiment of the present application, the stator 41 includes two ends disposed axially away from each other along the guide rod 30. The number of the first mounting holes 411 is multiple, and the multiple first mounting holes 411 are respectively arranged at the two ends of the stator 41. Both ends of the stator 41 are fixedly connected to the guide rod 30 through first fasteners.

[0060] Specifically, the stator 41 is a strip-shaped structure, and its orthographic projection along the axial direction is sinusoidal. First mounting holes 411 are arranged at both ends of the stator 41. It can be understood that when both ends of the stator 41 are fixedly connected to the guide rod 30 through first fasteners, the position of the stator 41 relative to the guide rod 30 is more stable, and setting first fasteners at both ends can enhance the connection strength between the stator 41 and the guide rod 30. Further, at any one of the two ends of the stator 41, multiple first mounting holes 411 are arranged. Thus, any one end of the stator 41 is fixedly connected to the guide rod 30 through multiple first fasteners.

[0061] In an alternative embodiment of the present application, the iron core 50 is provided with a recessed second mounting portion 51, and the mover 42 is fixedly connected to the second mounting portion 51.

[0062] As Figure 5 shown, the second mounting portion 51 is an installation groove recessed from the end plate 52 and the side plate 53 of the iron core 50, and the shape of the installation groove is adapted to the shape of the mover 42, so that the mover 42 can be embedded in the installation groove. When the iron core 50 reciprocates axially along the guide rod 30, since the mover 42 is embedded in the installation groove, the mover 42 can follow the movement of the iron core 50 and perform a reciprocating movement relative to the stator 41.

[0063] In an alternative embodiment of the present application, the mover 42 includes a second inner side surface and a second outer side surface disposed radially away from each other along the guide rod 30. The second inner side surface and the second outer side surface are respectively matched with the stator 41 and the second mounting portion 51. Among them, both the second inner side surface and the second outer side surface are curved surfaces. Specifically, the radian of the second inner side surface and the second outer side surface is the same as the radian of the first outer side surface of the stator 41.

[0064] In practical applications, the actuator further includes a control unit. The displacement detection element 40 can detect the relative displacement between the mover 42 and the stator 41 and transmit the displacement information to the control unit. The control unit receives the signal from the displacement detection element 40 and outputs a control signal. The actuator adjusts the stiffness, damping, body height, etc. of the suspension system through the control signal to ensure the stability and smoothness of the vehicle during driving, thereby realizing the active control function of the suspension system.

[0065] In an alternative embodiment of the present application, the mover 42 is provided with a third mounting hole 421, and the iron core 50 is provided with a fourth mounting hole 511 adapted to the third mounting hole 421. The mover 42 further includes a second fastener, and the mover 42 is fixedly connected to one end of the iron core 50 close to the first housing 21 through the second fastener.

[0066] Specifically, the mover 42 is an arc-shaped structure, on which a third mounting hole 421 is provided. The axial direction of the third mounting hole 421 is the same as the axial direction of the guide rod 30. On the second mounting portion 51 of the iron core 50, a fourth mounting hole 511 adapted to the third mounting hole 421 is provided opposite to the third mounting hole 421. The second fastener sequentially passes through the third mounting hole 421 and the fourth mounting hole 511 and finally fixedly connects the mover 42 to the second mounting portion 51 of the iron core 50.

[0067] Furthermore, in an alternative embodiment of the present application, the number of the third mounting holes 421 is set to be multiple, and the multiple third mounting holes 421 are arranged at intervals along the circumferential direction of the mover 42. The number and position of the fourth mounting holes 511 are adapted to the third mounting holes 421. Correspondingly, the number of the second fasteners is also multiple.

[0068] It should be noted that when the mover 42 and the iron core 50 are fixedly connected by multiple second fasteners, the connection effect between the two can be enhanced. When the connection between the mover 42 and the iron core 50 is tighter, the synchronization of the movement of the mover 42 with the iron core 50 is better, which is beneficial to improving the detection sensitivity of the displacement detection element 40.

[0069] In an alternative embodiment of the present application, the actuator further includes an elastic member 60 and a push rod 70. The elastic member 60 is sleeved on the guide rod 30 and connected between the first housing 21 and the iron core 50. The push rod 70 is connected to one end of the iron core 50 axially away from the first housing 21. The iron core 50 moves axially under the action of the elastic member 60 and the push rod 70.

[0070] Specifically, the elastic member 60 can be a spring, such as Figure 2As shown, one end of the spring abuts against the top plate of the first housing 21, and the other end abuts against the end plate 52 of the iron core 50. One end of the push rod 70 abuts against the iron core 50, and the other end is connected to the wheel end 12. In practical applications, when the vehicle passes over an uneven road surface during driving, the wheel end 12 transmits a thrust force to the push rod 70. Under the action of the thrust force from the wheel, the push rod 70 pushes the iron core 50 to move axially in the direction close to the first housing 21. During this process, the end plate 52 of the iron core 50 compresses the spring, causing the spring to have a restoring force and applying a reverse force to the iron core 50, playing a certain shock-absorbing role.

[0071] While the relative movement occurs between the iron core 50 and the guide rod 30, the mover 42 and the stator 41 of the displacement detection element 40 respectively connected to the iron core 50 and the guide rod 30 also have relative movement. The displacement detection element 40 is also used to detect the relative displacement between the mover 42 and the stator 41, and transmit the displacement information to the control unit of the actuator. The control unit receives the signal from the displacement detection element 40 and outputs a control signal. The actuator adjusts the stiffness, damping, body height, etc. of the suspension system through the control signal to ensure the stability and smoothness of the vehicle during driving, thereby realizing the active control function of the suspension system.

[0072] In an alternative embodiment of the present application, the actuator further includes a lower end cover 80. The lower end cover 80 is connected to the opening of the accommodating cavity and seals the accommodating cavity. The end of the push rod 70 far from the iron core 50 passes through the lower end cover 80 and is adapted to be connected to the wheel end 12.

[0073] Specifically, a central hole is provided on the lower end cover 80. The push rod 70 passes through the central hole to be connected to the wheel end 12. The setting of the lower end cover 80 not only seals the housing 20, which can play a certain dust and waterproof effect, but also has a certain guiding effect on the axial movement of the push rod 70. In practical applications, when the vehicle is driving on a bumpy road surface, the push rod 70 may be subjected to forces from various directions of the wheel end 12. The lower end cover 80 can limit the push rod 70 within the central hole, thereby ensuring the movement direction of the push rod 70 and the control effect of the actuator.

[0074] In an alternative embodiment of the present application, the actuator further includes a magnetic member 221 and a winding 501. The magnetic member 221 is connected to the inner side wall of the second housing 22, and the winding 501 is arranged on the iron core 50 and is disposed opposite to the magnetic member 221 along the radial direction of the second housing 22. The magnetic member 221 and the winding 501 interact to cause the iron core to move.

[0075] As Figure 2As shown, the winding 501 is connected outside the iron core 50 and is disposed opposite to the magnetic member 221 to interact with the magnetic member 221 to generate an electromagnetic force. It should be noted that in the embodiment of the present application, the magnetic member 221 is a permanent magnet. Compared with an electromagnet, the permanent magnet has a more persistent magnetism and does not rely on the supply of current, thereby ensuring the service life of the actuator and avoiding motor failure caused by magnetic force degradation.

[0076] Furthermore, since the mover 42 of the displacement detection element 40 is connected to one end of the iron core 50 close to the first housing 21, the winding 501 is sleeved on the iron core 50, and the magnetic member 221 is connected to the second housing 22, that is: the mover 42 of the displacement detection element 40 in the embodiment of the present application does not occupy the space of the magnetic member 221 or the winding 501, and the sizes of the magnetic member 221 and the winding 501 are not affected, so the electromagnetic force generated by their interaction is not affected, ensuring the thrust performance of the actuator.

[0077] In addition, along the axial direction of the second housing 22, the length of the magnetic member 221 is greater than the length of the winding 501. It should be noted that since the winding 501 is connected outside the iron core 50, the iron core 50 will reciprocate axially under the action of the push rod 70. Setting the size of the magnetic member 221 to be greater than the size of the winding 501 can ensure that when the iron core 50 moves to any position, there is a magnetic member 221 opposite to the winding 501 so that the two can interact to generate an electromagnetic force.

[0078] In summary, the actuator provided by the embodiment of the present application has at least the following advantages:

[0079] In the embodiment of the present application, the guide rod is disposed in the accommodation cavity of the housing and fixedly connected to the first housing. The iron core is sleeved outside the guide rod and can move axially along the guide rod. The mover of the displacement detection element is movably connected to the stator. Further, the stator is fixedly connected to the guide rod, and the mover is fixedly connected to the iron core. In this way, when the iron core moves axially along the guide rod, the mover of the displacement detection element will generate an axial movement relative to the stator along with the movement of the iron core. The displacement detection element can output a voltage signal by reading the displacement of the mover in the axial direction of the stator to realize the control of the actuator. Through the actuator provided by the embodiment of the present application, both the stator and the mover of the displacement detection element are disposed inside the housing of the actuator, realizing the monitoring function of the displacement detection element for the displacement of the actuator within a limited internal space, making the structure of the actuator more compact, improving the space utilization rate of the actuator, and being beneficial to the layout of the suspension system.

[0080] The embodiment of the present application further provides a suspension system, which may include: a control unit, and the actuator as described above. The control unit is electrically connected to the displacement detection element. Wherein, the displacement detection element 40 can detect the relative displacement between the mover 42 and the stator 41, and transmit the displacement information to the control unit. The control unit receives the signal from the displacement detection element 40 and outputs a control signal. The actuator adjusts the stiffness, damping, body height, etc. of the suspension system through the control signal to ensure the stability and smoothness of the vehicle during driving.

[0081] The embodiment of the present application further provides a vehicle, including the actuator or the suspension system as described above.

[0082] It should be noted that the suspension system and the vehicle provided by the embodiment of the present application have the same or similar beneficial effects as the above-mentioned actuator, which will not be elaborated here.

[0083] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", 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 application. 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 any one or more embodiments or examples in a suitable manner.

[0084] Although the embodiments of the present application 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 principle and spirit of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. An actuator, characterized in that, Comprising: A housing; A guide rod fixedly provided within the housing; An iron core disposed within the housing and outside the guide rod, the iron core being capable of moving axially along the guide rod; A displacement detection element including a stator and a rotor, the stator being fixedly connected to the guide rod, and the rotor being fixedly connected to the iron core.

2. The actuator according to claim 1, wherein A recessed first mounting portion is provided on the side wall of the guide rod, and the stator is fixedly connected to the first mounting portion.

3. The actuator according to claim 2, characterized in that, The stator includes a first inner side surface and a first outer side surface disposed radially away from each other along the guide rod, the first inner side surface and the first outer side surface being respectively in cooperation with the first mounting portion and the rotor. Among them, the first inner side surface is a plane, and the first outer side surface is a curved surface.

4. The actuator according to claim 1, characterized in that, The stator is provided with a first mounting hole, and the guide rod is provided with a second mounting hole adapted to the first mounting hole. The stator further includes a first fastener that passes through the first mounting hole and is fixed to the second mounting hole to fixedly connect the stator to the guide rod.

5. The actuator according to claim 4, characterized in that, The number of the first mounting holes is multiple, and the multiple first mounting holes are spaced apart circumferentially along the stator.

6. The actuator according to claim 4, wherein The stator includes two ends disposed axially away from each other along the guide rod, and the number of the first mounting holes is multiple, and the multiple first mounting holes are respectively provided at the two ends of the stator.

7. The actuator according to claim 1, characterized in that, The iron core is provided with a recessed second mounting portion, and the rotor is fixedly connected to the second mounting portion.

8. The actuator according to claim 7, characterized in that, The rotor includes a second inner side surface and a second outer side surface disposed radially away from each other along the guide rod, the second inner side surface and the second outer side surface being respectively in cooperation with the stator and the second mounting portion. Among them, both the second inner side surface and the second outer side surface are curved surfaces.

9. The actuator according to claim 1, characterized in that, The rotor is provided with a third mounting hole, and the iron core is provided with a fourth mounting hole adapted to the third mounting hole. The rotor further includes a second fastener that passes through the third mounting hole and is fixed to the fourth mounting hole to fixedly connect the rotor to the iron core.

10. The actuator according to claim 9, characterized in that, The number of the third mounting holes is multiple, and the multiple third mounting holes are spaced apart circumferentially along the rotor.

11. The actuator according to claim 1, wherein The displacement detection element includes any one of a Hall displacement detection element, a grating scale displacement detection element, and a magnetic grating scale displacement detection element.

12. The actuator according to claim 1, wherein The fixed connection between the stator and the guide rod includes at least one of threaded connection, welding, bonding, riveting, and interference fit, and the fixed connection between the rotor and the iron core includes at least one of threaded connection, welding, bonding, riveting, and interference fit.

13. The actuator according to claim 1, wherein, The actuator further includes an elastic member and a push rod. The housing includes a first housing and a second housing. The first housing and the second housing enclose a receiving cavity with an opening. The guide rod is connected to the first housing. The elastic member is sleeved on the guide rod and connected between the first housing and the iron core. The push rod is connected to the end of the iron core axially away from the first housing. The iron core moves axially under the action of the elastic member and the push rod.

14. The actuator according to claim 13, characterized in that, The actuator further includes a lower end cap, which is connected to the opening of the accommodating cavity and seals the accommodating cavity. One end of the push rod away from the iron core passes through the lower end cap and is adapted to be connected to the wheel end.

15. The actuator according to claim 13, characterized in that, The actuator further includes a magnetic member and a winding. The magnetic member is connected to the inner side wall of the second housing. The winding is arranged on the iron core and is arranged opposite to the magnetic member along the radial direction of the second housing. The magnetic member and the winding interact to cause the iron core to move.

16. A suspension system, characterized in that, Comprising: A control unit, and an actuator according to any one of claims 1 to 15, wherein the control unit is electrically connected to the displacement detection element. The displacement detection element is used to detect the relative displacement between the mover and the stator and transmit the displacement information to the control unit. The control unit receives the displacement information from the displacement detection element and controls the movement of the actuator.

17. A vehicle, characterized in that, Comprising an actuator according to any one of claims 1 to 15, or a suspension system according to claim 16.

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