Actuator and vehicle

Abstract

The actuator comprises a shell, a motor, a transmission assembly and an output shaft, the shell is provided with a mounting cavity, the motor and the transmission assembly are both arranged in the mounting cavity, the motor comprises a stator and a rotor, the stator is provided with a mounting hole, and the rotor is contained in the mounting hole; the rotor is connected with the output shaft through a transmission assembly so as to drive the output shaft to rotate, and the transmission assembly is arranged on one side of the stator. The rotor is provided with a rotor gear, a first notch is formed in the peripheral side of the stator, a mounting shaft is arranged in the mounting cavity and arranged at the first notch, the transmission assembly comprises a first transmission gear in meshed connection with the rotor gear, and the first transmission gear is mounted on the mounting shaft. According to the actuator, interference between the first transmission gear and the stator is avoided, the distance between the first transmission gear and the center of the rotor is small, and the transmission center distance between the first transmission gear and the rotor is small, so that noise between the rotor and a transmission assembly can be reduced, and the wear resistance of the rotor can be improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and in particular to an actuator and a vehicle. Background Technology

[0002] As the automotive industry continues to develop, the types of automotive actuators are also increasing, such as actuators for water valves, air intake grilles, rotating screens, and electric door handles. At the same time, automotive companies are placing increasingly stringent requirements on actuators, including high control precision, long lifespan, and low noise. Therefore, the development of automotive actuators plays an indispensable role in the progress of the automotive industry.

[0003] Currently, automotive actuators consist of a transmission assembly comprised of a motor and gears. Most motors use brushed DC motors as their power source. However, because brushed DC motors rely on carbon brushes for commutation, they suffer from problems such as brush wear, motor overheating and load reduction, current loss, and high noise levels, severely impacting the actuator's lifespan, energy conversion efficiency, and operational stability. Even after switching to brushless motors as the power source, the problem of high noise levels between the motor's rotor and gear set persists, and the rotor is not wear-resistant, significantly affecting the actuator's lifespan. Utility Model Content

[0004] Therefore, it is necessary to provide an actuator and vehicle that are low in noise and wear-resistant.

[0005] An actuator includes a housing, a motor, a transmission assembly, and an output shaft. The housing has a mounting cavity, and the motor and the transmission assembly are both disposed within the mounting cavity. The motor includes a stator and a rotor. The stator has a mounting hole, and the rotor is received within the mounting hole. The rotor is connected to the output shaft via the transmission assembly to drive the output shaft to rotate, and the transmission assembly is disposed on one side of the stator. The rotor has a rotor gear, and the stator has a first notch on its outer periphery. The mounting cavity contains a mounting shaft, which is located at the first notch. The transmission assembly includes a first transmission gear meshing with the rotor gear, and the first transmission gear is mounted on the mounting shaft.

[0006] In one embodiment, the housing includes a bottom shell and a cover, the bottom shell and the cover being connected at their edges and enclosing the mounting cavity;

[0007] The bottom surface of the bottom shell is provided with a first mounting groove and a second mounting groove extending toward the cover body. The first mounting groove and the second mounting groove are coaxially arranged. The stator is received in the first mounting groove, the rotor is mounted in the second mounting groove, and the rotor gear extends out of the second mounting groove.

[0008] In one embodiment, the bottom surface of the bottom shell is further provided with an arc-shaped wall extending toward the cover body, and the arc-shaped wall is located outside the first mounting groove;

[0009] The outer periphery of the first mounting groove is provided with a second notch that is recessed toward the inside of the first mounting groove. The inner wall of the second notch and the arc-shaped wall form a third mounting groove, and the mounting shaft is installed in the third mounting groove.

[0010] In one embodiment, in the height direction of the actuator, the top wall of the arcuate wall is higher than the top wall of the first mounting groove.

[0011] In one embodiment, the stator includes a stator core and an insulating member wrapped around the outside of the stator core, the stator core being annular and having the mounting hole formed inside the stator core;

[0012] The insulating component includes an insulating top wall disposed on the end face of the stator core near the cover, the insulating top wall having an extension that protrudes radially from the outer wall of the stator core.

[0013] The first notch extends radially inward from the end of the extension away from the mounting hole along the stator core.

[0014] In one embodiment, the stator core includes an annular main body and a plurality of terminals disposed inside the main body. The plurality of terminals are arranged at circumferential intervals along the main body, and each terminal extends radially inward from the inner wall of the main body.

[0015] The orthographic projection of the outer peripheral wall of the main body along the axial direction of the main body onto the cover is defined as the stator outer wall surface, and the orthographic projection of the inner peripheral wall of the main body along the axial direction of the main body onto the cover is defined as the stator inner wall surface.

[0016] The first notch extends radially from one end of the extension away from the mounting hole along the main body to the outer wall surface of the stator, or extends between the outer wall surface of the stator and the inner wall surface of the stator.

[0017] In one embodiment, the actuator further includes a grounding member extending along the height direction of the housing, the grounding member being disposed in the mounting cavity, the grounding member passing through the insulating member, and the end of the grounding member away from the cover being connected to the stator core.

[0018] In one embodiment, in the height direction of the actuator, the extension is further provided with a plug-in portion protruding from the extension toward the cover body.

[0019] The actuator also includes four connectors and three windings. The connectors extend along the height of the housing. The end of the connector away from the cover passes through the plug-in portion. In the length direction of the actuator, the connector is located on the side of the stator away from the transmission assembly, and the orthographic projection of the connector on the cover is located between the outer wall surface of the stator and the inner wall surface of the stator.

[0020] The three windings are wound around different connectors. One end of each winding is connected to a connector, and the other end of each winding is connected to a connector that is not connected by the windings, so that the windings form a star connection.

[0021] In one embodiment, a positioning element is provided on the inner side of the bottom shell.

[0022] The actuator also includes a PCB board disposed between the cover and the insulating component. The PCB board is connected to the positioning component, and a certain distance is provided between the PCB board, the insulating component, and the cover.

[0023] The PCB board is electrically connected to the stator;

[0024] The rotor, the grounding component, and the connector are mounted on the PCB board.

[0025] This application also provides a vehicle including the actuator as described in any of the preceding embodiments.

[0026] Compared with the prior art, the actuator provided in this application provides a first notch on the side of the stator near the transmission assembly, and a mounting shaft is provided at the first notch. The first transmission gear of the transmission assembly is mounted on the mounting shaft. Therefore, there is no interference between the first transmission gear and the stator. In addition, the distance between the first transmission gear and the rotor center is reduced, that is, the transmission center distance between the first transmission gear and the rotor is reduced. This reduces the noise between the rotor and the transmission assembly and improves the wear resistance of the rotor. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of the actuator in one embodiment of this application;

[0029] Figure 2This is an exploded view of the actuator in one embodiment of this application;

[0030] Figure 3 This is a schematic diagram of the bottom shell structure in one embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the structure of the actuator for removing the cover in one embodiment of this application;

[0032] Figure 5 This is a schematic diagram showing the location of the first notch in one embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the stator structure in one embodiment of this application;

[0034] Figure 7 This is a schematic diagram of another angle of the stator in one embodiment of this application.

[0035] Figure label:

[0036] 10. Outer shell; 101. Mounting cavity; 102. First mounting groove; 1021. Second notch; 103. Second mounting groove; 104. Third mounting groove; 105. Interface; 110. Bottom shell; 111. Mounting shaft; 112. Arc-shaped wall; 113. Fish-eye pin; 114. Positioning element; 120. Cover;

[0037] 20. Motor; 210. Stator; 2101. Mounting hole; 2102. First notch; 211. Stator core; 2111. Main body; 2112. Wiring body; 2113. Stator outer wall; 2114. Stator inner wall; 212. Insulating component; 2121. Insulating top wall; 2122. Extension; 2123. Plug-in part; 2124. Connecting part;

[0038] 220. Rotor; 221. Rotor gear;

[0039] 30. Transmission assembly; 301. First transmission gear; 302. Second transmission gear;

[0040] 40. Grounding component; 50. Connector; 60. PCB board. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0046] Please see Figures 1 to 7 This application provides an actuator, including a housing 10, a motor 20, a transmission assembly 30, and an output shaft. The housing 10 has a mounting cavity 101, and the motor 20 and the transmission assembly 30 are both disposed in the mounting cavity 101. The motor 20 includes a stator 210 and a rotor 220. The stator 210 has a mounting hole 2101, and the rotor 220 is received in the mounting hole 2101. The rotor 220 is connected to the output shaft through the transmission assembly 30 to drive the output shaft to rotate, and the transmission assembly 30 is disposed on one side of the stator 210.

[0047] In this embodiment, refer to Figure 3The rotor 220 is provided with a rotor gear 221, the stator 210 has a first notch 2102 on its outer periphery, the mounting cavity 101 is provided with a mounting shaft 111, the mounting shaft 111 is located at the first notch 2102, and the transmission assembly 30 includes a first transmission gear 301 that meshes with the rotor gear 221, the first transmission gear 301 is mounted on the mounting shaft 111.

[0048] It is understood that in this embodiment, the actuator has a first notch 2102 on the side of the stator 210 near the transmission assembly 30. A mounting shaft 111 is provided at this first notch 2102, and the first transmission gear 301 of the transmission assembly 30 is mounted on this mounting shaft 111. Therefore, there is no interference between the first transmission gear 301 and the stator 210, and the distance between the first transmission gear 301 and the center of the rotor 220 is reduced. This reduces the transmission center distance between the first transmission gear 301 and the rotor 220, thereby reducing noise between the rotor 220 and the transmission assembly 30, and also improving the wear resistance of the rotor 220.

[0049] Understandably, after the actuator is powered on, the stator 210 changes the current direction via an external electronic controller. The electronic controller precisely switches the power supply sequence to the stator 210 based on the position of the rotor 220, ensuring that the direction of the magnetic field within the stator 210 always matches the movement of the rotor 220. This changing magnetic field within the stator 210 generates a continuous rotational torque in the rotor 220, causing it to rotate. The rotor 220 then drives the first transmission gear 301, which meshes with it, thus transmitting power to the transmission assembly 30, which in turn transmits the power to the output shaft. The output shaft then outputs the speed and torque generated by the actuator.

[0050] Furthermore, the mounting shaft 111 is directly integrated into the bottom shell 110 of the housing 10. This not only makes the mounting shaft 111 more robust and eliminates the cumulative error between the mounting shaft 111 and the rotor 220, but also reduces the number of parts in the actuator assembly and lowers production costs.

[0051] Furthermore, this brushless actuator uses a brushless motor as its power source. Because brushless motors have a long lifespan, generate little heat, have high reliability, low failure rate, low noise, and high efficiency, and are less affected by ambient temperature, using a brushless motor as a power source can effectively improve the lifespan of the actuator in this embodiment, reduce actuator wear and heat generation, improve the actuator's working mode, increase the actuator's output efficiency, and at the same time ensure the stability of the actuator's output, effectively avoiding various problems that occur with brushed motors.

[0052] Furthermore, the rotor 220 includes a magnet body, and a rotor gear 221 is located at the end of the magnet body near the cover 120. In the height direction of the actuator, the rotor gear 221 protrudes from the stator 210, thus preventing interference between the transmission assembly 30 and the stator 210. The rotor gear 221 is integrally formed with the magnet body. Schematably, the rotor 220 is made of PA9T (polyamide 9T) material, which improves the mechanical strength of the rotor 220 and extends the service life of the actuator in this embodiment.

[0053] In one embodiment, see Figure 3 The outer casing 10 includes a bottom shell 110 and a cover 120. The edges of the bottom shell 110 and the cover 120 are connected and enclose a mounting cavity 101. The bottom surface of the bottom shell 110 is provided with a first mounting groove 102 and a second mounting groove 103 extending toward the cover 120. The first mounting groove 102 and the second mounting groove 103 are coaxially arranged. In this way, the coaxiality of the rotor 220 and the stator 210 can be guaranteed, ensuring that the rotor 220 and the stator 210 will not come into contact and avoiding wear between the rotor 220 and the stator 210.

[0054] The stator 210 is housed in the first mounting slot 102, and the rotor 220 is mounted in the second mounting slot 103, with the rotor gear 221 extending out of the second mounting slot 103. Since the rotor gear 221 of the rotor 220 meshes with the first transmission gear 301, interference between the stator 210 and the first transmission gear 301, and between the stator 210 and the transmission assembly 30, can be avoided. This reduces noise between the rotor 220 and the transmission assembly 30 and improves the wear resistance of the rotor 220.

[0055] Further, see Figure 4The transmission assembly 30 further includes at least one second transmission gear 302, the central axis of which is arranged along the height direction of the actuator. A first transmission gear 301 meshes with the second transmission gear 302, and the first transmission gear 301 transmits the rotational speed and torque generated by the actuator to the second transmission gear 302. Schematably, the transmission assembly 30 includes three second transmission gears 302 connected in sequence, which sequentially transmit the rotational speed and torque generated by the actuator. The first transmission gear 301 meshes with one of the second transmission gears 302, and the second transmission gear 302 at the end of the transmission is connected to the output shaft to output the rotational speed and torque generated by the actuator. Along the length direction of the actuator, the central axis of the first transmission gear 301 and the central axes of the multiple second transmission gears 302 are arranged in an "S" shape, resulting in a compact arrangement of the first transmission gears 301 and reducing the size of the actuator. Furthermore, the second transmission gear 302 connected to the output shaft is made of polyhexamethylene adipate resin (PA66) with 35% glass fiber added. Thus, the second transmission gear 302 has high mechanical strength, is not easy to break, and has good wear resistance.

[0056] Furthermore, at least one of the bottom shell 110 or the cover 120 has a positioning hole, through which the bottom shell 110 and the cover 120 are positioned, aligned, and pre-assembled. This facilitates the installation of the bottom shell 110 and the cover 120 and avoids situations where the bottom shell 110 and the cover 120 are difficult to align. In other embodiments, the bottom shell 110 and the cover 120 can also be positioned and aligned by providing positioning grooves or limiting parts; this application does not limit this. Furthermore, the bottom shell 110 and the cover 120 are connected by laser welding. This improves the mechanical rigidity and wear resistance of the actuator. In other embodiments, the bottom shell 110 and the cover 120 can also use other connection methods; this application does not limit this. Furthermore, the outer shell 10 also includes a sealing ring, which is installed on the cover 120 to improve the stability of the outer shell 10.

[0057] In one embodiment, the bottom surface of the bottom shell 110 is further provided with an arc-shaped wall 112 extending toward the cover 120, and the arc-shaped wall 112 is located outside the first mounting groove 102; the outer periphery of the first mounting groove 102 is provided with a second notch 1021 recessed toward the interior of the first mounting groove 102, and the inner wall of the second notch 1021 and the arc-shaped wall 112 form a third mounting groove 104, in which the mounting shaft 111 is mounted. This further reduces the distance between the center of the first transmission gear 301 and the rotor 220, further reduces the transmission center distance between the first transmission gear 301 and the rotor 220, thereby further reducing the noise between the rotor 220 and the transmission assembly 30.

[0058] In one embodiment, in the height direction of the actuator, the top wall of the arc-shaped wall 112 is higher than the top wall of the first mounting groove 102. Since the rotor gear 221 protrudes from the stator 210, which is mounted within the first mounting groove 102, and the first transmission gear 301 meshes with the rotor gear 221, the first transmission gear 301 is also higher than the stator 210 and the first mounting groove 102. The top wall of the arc-shaped wall 112 is higher than the top wall of the first mounting groove 102. This improves the stability of the mounting shaft 111 and the stability of the first transmission gear 301.

[0059] In one embodiment, see Figure 6 and Figure 7 The stator 210 includes a stator core 211 and an insulating member 212 surrounding the stator core 211. The stator core 211 is annular, and a mounting hole 2101 is formed inside the stator core 211. The insulating member 212 includes an insulating top wall 2121, which is disposed on the end face of the stator core 211 near the cover 120. The insulating top wall 2121 has an extension 2122 that protrudes radially from the outer wall of the stator core 211. Further, the extension 2122 is provided with a connecting portion 2124, and the first mounting groove 102 is provided with a rib corresponding to the connecting portion 2124 to facilitate and quickly position the stator 210. Specifically, the connecting portion 2124 and the rib are connected by screws to fix the stator 210 in the first mounting groove 102 of the bottom shell 110. In illustrative terms, the number of connecting parts 2124, ribs, and screws are all four. This ensures a stable connection between the stator 210 and the base shell 110 without requiring an excessive number of connecting parts 2124 and ribs, thus simplifying the structure of the stator 210 and the first mounting groove 102. In other embodiments, the stator 210 can also be fixed in the first mounting groove 102 by snap-fitting, bonding, or other methods, and this application does not impose any limitations on this.

[0060] Furthermore, the first notch 2102 extends radially inward from the end of the extension 2122 away from the mounting hole 2101 along the stator core 211. This reduces the distance between the center of the first transmission gear 301 and the rotor 220, thereby reducing the transmission center distance between the first transmission gear 301 and the rotor 220, thus reducing noise between the rotor 220 and the transmission assembly 30, and improving the wear resistance of the rotor 220.

[0061] In one embodiment, the stator core 211 includes an annular main body 2111 and a plurality of terminals 2112 disposed inside the main body 2111. The terminals 2112 are arranged circumferentially spaced along the main body 2111, and each terminal 2112 extends radially inward from the inner wall of the main body 2111. The orthographic projection of the outer peripheral wall of the main body 2111 along its axial direction onto the cover 120 is defined as the stator outer wall surface 2113, and the orthographic projection of the inner peripheral wall of the main body 2111 along its axial direction onto the cover 120 is defined as the stator inner wall surface 2114. The first notch 2102 extends radially from the end of the extension 2122 away from the mounting hole 2101 to the stator outer wall surface 2113. Thus, the distance between the first transmission gear 301 and the center of the rotor 220 is minimized.

[0062] Furthermore, the first notch 2102 extends radially from the end of the extension 2122 away from the mounting hole 2101 along the main body 2111 to the space between the outer wall surface 2113 and the inner wall surface 2114 of the stator. In this way, the distance between the first transmission gear 301 and the center of the rotor 220 is minimized, which facilitates the fabrication of the insulating component 212 and the production of the stator 210.

[0063] In one embodiment, the actuator further includes a grounding element 40 extending along the height direction of the housing 10. The grounding element 40 is located in the mounting cavity 101, passes through the insulating element 212, and its end away from the cover 120 is connected to the stator core 211. The grounding element 40 is used to discharge current that may be generated due to static electricity accumulation or failure of the insulating element 212, providing a safe discharge path for such current, thereby reducing the risk of electric shock to the actuator and protecting the safety of the operator and the actuator. Moreover, the grounding element 40 helps to reduce electromagnetic interference generated during the operation of the motor 20 and improves the immunity to electromagnetic interference from the outside, thus improving the electromagnetic compatibility of the motor 20. When the magnetic field generated by the stator 210 does not meet the operating conditions, the magnetic field parameters can be adjusted through the grounding element 40, thereby improving the service life of the motor 20 and reducing the noise of the motor 20 during operation.

[0064] In one embodiment, in the height direction of the actuator, the extension 2122 is further provided with a plug portion 2123 protruding from the extension 2122 toward the cover 120. The actuator also includes four connectors 50, which extend along the height direction of the housing 10. The end of the connector 50 away from the cover 120 passes through the plug portion 2123. In the length direction of the actuator, the connectors 50 are located on the side of the stator 210 away from the transmission assembly 30. It is understood that the housing 10 of the actuator is provided with an interface 105 for connecting to an external power source, and the stator 210 is located between the interface 105 and the transmission assembly 30. That is, the connectors 50 are located on the stator 210 near the interface 105, which reduces current loss.

[0065] Furthermore, the orthographic projection of the connector 50 on the cover 120 is located between the outer stator wall surface 2113 and the inner stator wall surface 2114. In this way, the space in the mounting cavity 101 can be rationally utilized in the longitudinal direction of the actuator, making the actuator structure more compact and reducing the size of the actuator.

[0066] The actuator also includes three windings, each wound around a different terminal block 2112. One end of each winding is connected to a connector 50, and the other ends of all three windings are connected to a connector 50 that is not connected by windings, thus forming a star connection between the windings. It is understood that this embodiment uses a brushless motor with a three-phase winding structure. The three windings are wound around different terminal blocks 2112 of the stator 210, forming three independent but interconnected windings. These three windings are distributed at a certain angle, forming phases U, V, and W, respectively. One end of each of phases U, V, and W is connected to a connector 50, and the other end of each of phases U, V, and W is connected to a connector 50 that is not connected by windings, forming a neutral point, thus forming a star connection between the windings. The stator 210 converts DC power to AC power through an external electronic controller and energizes the three-phase windings in a specific timing sequence to form a rotating magnetic field, which in turn drives the rotor 220 to rotate. In this way, the brushless motor using three-phase windings can provide higher power density and efficiency, and the motor 20 operates more smoothly with less vibration and noise.

[0067] Furthermore, in the radial direction of the stator 210, the insertion member 50 is located on the central axis of the connector 2112, which makes it easier to wind the wire onto the connector 2112.

[0068] In one embodiment, see Figure 4The bottom shell 110 has a positioning member 114 on its inner side. The actuator also includes a PCB board 60 located between the cover 120 and the insulating member 212. The PCB board 60 is connected to the positioning member 114, and there is a certain distance between the PCB board 60, the insulating member 212, and the cover 120. This makes it convenient to arrange other components, such as Hall sensors, on the front and back of the PCB board 60 to reduce the PCB size.

[0069] Furthermore, the PCB board 60 is electrically connected to the stator 210, and the rotor 220, grounding component 40, and connector 50 are all mounted on the PCB board 60. It can be understood that the PCB board 60 is powered by an external power source via the fisheye pin 113, and simultaneously converts the input DC power into three-phase AC power, which is then connected to the U, V, and W phases of the brushless motor via the connector 50. After the actuator is powered on, the PCB board 60 controls the stator 210 to generate a changing magnetic field, thereby driving the rotor 220 to rotate. The rotor 220 is driven by the transmission assembly 30 to reduce speed and increase torque, ultimately outputting a certain speed and torque on the output shaft.

[0070] As an illustration, a fisheye pin 113 is pre-embedded in the interface 105 of the housing 10. One end of the fisheye pin 113 is located in the mounting cavity 101 and passes through the PCB board 60. The PCB board 60 is connected to an external power source through the fisheye pin 113. This not only facilitates the positioning of the PCB board 60 but also saves space on the PCB board 60.

[0071] This application also provides a vehicle including the actuator described in any of the preceding embodiments. This brushless actuator uses a brushless motor as its power source. Because brushless motors have a long lifespan, high reliability, low failure rate, low noise, and minimal heat generation, they are less affected by ambient temperature and have high efficiency, effectively avoiding the problems associated with brushed motors, making them suitable for automotive applications.

[0072] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0073] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. An actuator, comprising a housing (10), a motor (20), a transmission assembly (30), and an output shaft, wherein the housing (10) is provided with a mounting cavity (101), and the motor (20) and the transmission assembly (30) are both disposed within the mounting cavity (101). The motor (20) includes a stator (210) and a rotor (220). The stator (210) is provided with a mounting hole (2101), and the rotor (220) is received in the mounting hole (2101). The rotor (220) is connected to the output shaft through the transmission assembly (30) to drive the output shaft to rotate, and the transmission assembly (30) is located on one side of the stator (210). Its features are, The rotor (220) is provided with a rotor gear (221), the stator (210) is provided with a first notch (2102) on its outer periphery, the mounting cavity (101) is provided with a mounting shaft (111), the mounting shaft (111) is located at the first notch (2102), and the transmission assembly (30) includes a first transmission gear (301) that meshes with the rotor gear (221), the first transmission gear (301) is mounted on the mounting shaft (111).

2. The actuator according to claim 1, characterized in that, The outer shell (10) includes a bottom shell (110) and a cover (120), the edges of the bottom shell (110) and the cover (120) are connected and enclose the mounting cavity (101). The bottom surface of the bottom shell (110) is provided with a first mounting groove (102) and a second mounting groove (103) extending toward the cover (120). The first mounting groove (102) and the second mounting groove (103) are coaxially arranged. The stator (210) is received in the first mounting groove (102), the rotor (220) is mounted in the second mounting groove (103), and the rotor gear (221) extends out of the second mounting groove (103).

3. The actuator according to claim 2, characterized in that, The bottom surface of the bottom shell (110) is also provided with an arc-shaped wall (112) extending toward the cover (120), and the arc-shaped wall (112) is located outside the first mounting groove (102); The outer periphery of the first mounting groove (102) is provided with a second notch (1021) that is recessed into the first mounting groove (102). The inner wall of the second notch (1021) and the arc-shaped wall (112) form a third mounting groove (104). The mounting shaft (111) is installed in the third mounting groove (104).

4. The actuator according to claim 3, characterized in that, In the height direction of the actuator, the top wall of the arc-shaped wall (112) is higher than the top wall of the first mounting groove (102).

5. The actuator according to claim 2, characterized in that, The stator (210) includes a stator core (211) and an insulating member (212) wrapped around the outside of the stator core (211). The stator core (211) is annular, and the mounting hole (2101) is formed inside the stator core (211). The insulating element (212) includes an insulating top wall (2121) disposed on the end face of the stator core (211) near the cover (120), and the insulating top wall (2121) has an extension (2122) that protrudes radially from the outer wall of the stator core (211). The first notch (2102) extends radially inward from one end of the extension (2122) away from the mounting hole (2101) along the stator core (211).

6. The actuator according to claim 5, characterized in that, The stator core (211) includes an annular main body (2111) and a plurality of terminals (2112) disposed inside the main body (2111). The plurality of terminals (2112) are arranged at intervals along the circumference of the main body (2111), and each terminal (2112) extends radially inward from the inner wall of the main body (2111). The orthographic projection of the outer peripheral wall of the main body (2111) along the axial direction of the main body (2111) onto the cover (120) is defined as the stator outer wall surface (2113), and the orthographic projection of the inner peripheral wall of the main body (2111) along the axial direction of the main body (2111) onto the cover (120) is defined as the stator inner wall surface (2114). The first notch (2102) extends radially from the end of the extension (2122) away from the mounting hole (2101) along the main body (2111) to the outer wall surface (2113) of the stator, or extends between the outer wall surface (2113) of the stator and the inner wall surface (2114) of the stator.

7. The actuator according to claim 6, characterized in that, The actuator also includes a grounding member (40) extending along the height direction of the housing (10), the grounding member (40) being disposed in the mounting cavity (101), the grounding member (40) passing through the insulating member (212), and the end of the grounding member (40) away from the cover (120) being connected to the stator core (211).

8. The actuator according to claim 7, characterized in that, In the height direction of the actuator, the extension (2122) is also provided with a plug (2123) that protrudes from the extension (2122) toward the cover (120). The actuator also includes four connectors (50) and three windings. The connectors (50) extend along the height direction of the housing (10). One end of the connector (50) away from the cover (120) passes through the plug-in portion (2123). In the length direction of the actuator, the connectors (50) are located on the side of the stator (210) away from the transmission assembly (30), and the orthographic projection of the connectors (50) on the cover (120) is located between the outer wall surface (2113) and the inner wall surface (2114) of the stator. The three windings are wound around different connectors (2112), one end of each winding is connected to a connector (50), and the other end of each winding is connected to a connector (50) that is not connected by the windings, so that the windings form a star connection.

9. The actuator according to claim 8, characterized in that, The bottom shell (110) is provided with a positioning element (114) on its inner side. The actuator also includes a PCB board (60) disposed between the cover (120) and the insulating member (212), the PCB board (60) being connected to the positioning member (114), and a certain distance being provided between the PCB board (60), the insulating member (212), and the cover (120); The PCB board (60) is electrically connected to the stator (210); The rotor (220), the grounding component (40), and the connector (50) are mounted on the PCB board (60).

10. A vehicle, characterized in that, Includes the actuator as described in any one of claims 1 to 9.

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