CN212305043U - Motor element, nacelle and unmanned aerial vehicle - Google Patents

Abstract

The embodiment of the application provides a motor element, nacelle and unmanned aerial vehicle, relates to avionics technical field. The motor element that this application embodiment provided includes stator, rotor, mounting bracket and drive plate, connects the drive plate in stator or rotor through the mounting bracket for motor element has formed a comparatively compact overall structure. The motor component is convenient to integrally disassemble and assemble, and the installation position of the drive plate is not required to be independently designed on equipment applied to the motor component, so that the cost is reduced. This application embodiment is through designing into a whole with motor element, also is favorable to realizing the miniaturization of equipment. The nacelle that this application embodiment provided, unmanned aerial vehicle all contain foretell motor element, consequently also have foretell beneficial effect.

Description

Motor element, nacelle and unmanned aerial vehicle

Technical Field

The application relates to the technical field of avionics, in particular to a motor assembly, a nacelle and an unmanned aerial vehicle.

Background

Brushless dc motors require the use of a drive plate to effect electronic commutation to control the continuous rotation of the rotor. In the field of avionics, a motor and a driving plate of the motor are designed in a discrete mode, and after the motor is installed, the installation position of the driving plate of the motor needs to be designed additionally. This kind of discrete design leads to motor element's integrated level to be low, is unfavorable for whole dismouting, also does not favorable to the holistic miniaturization of equipment.

SUMMERY OF THE UTILITY MODEL

The purpose of this application is including providing a motor element, and it has the integrated level height, makes things convenient for the advantage of whole dismantlement, also is favorable to the holistic miniaturization of equipment simultaneously.

The object of this application still includes provides a nacelle and unmanned aerial vehicle that has applied above-mentioned motor element.

The embodiment of the application can be realized as follows:

in a first aspect, an embodiment of the present application provides an electric machine assembly, including:

a stator;

a rotor rotatable relative to the stator;

a mounting bracket attached to the stator or rotor;

and the driving plate is arranged on the mounting frame and is electrically connected with the coil winding of the motor assembly so as to control the rotor to rotate.

In an alternative embodiment, the coil windings are provided on a stator, and the mounting bracket is attached to the stator.

In an alternative embodiment, the stator is sleeved outside the rotor, and the drive plate and the stator are spaced apart in the axial direction of the rotor.

In an alternative embodiment, the mounting bracket includes a mounting plate and a plurality of connecting arms, one end of each connecting arm is connected to the outer side of the stator, the other end of each connecting arm extends in the axial direction of the rotor and is connected to the mounting plate, and the driving plate is disposed on the mounting plate.

In an alternative embodiment, the plurality of connecting arms are evenly spaced about the axis of the rotor.

In an optional embodiment, the mounting bracket further includes a connecting ring, the connecting ring is sleeved on the outer side of the stator, and one end of the connecting arm is connected to the connecting ring.

In an alternative embodiment, a mounting slot is provided on the mounting plate, and the drive plate is disposed in the mounting slot.

In an optional embodiment, a heat dissipation boss is arranged at the bottom of the mounting groove and used for attaching a chip on the driving plate.

In an alternative embodiment, the drive plate is disposed on a side of the mounting plate facing the rotor.

In an alternative embodiment, the coil winding is arranged on the stator, the rotor is provided with a magnetic part, one end of the rotor close to the driving plate is provided with a code disc, the driving plate is provided with an encoder, and the encoder is opposite to the code disc in the axial direction of the rotor so as to identify the rotation angle of the code disc.

In an alternative embodiment, the drive plate is a circular plate or a circular ring plate, the I/O interface is provided on a side of the drive plate facing the rotor, and the I/O interface is adjacent to an outer edge of the drive plate.

In an optional embodiment, the motor assembly further includes a casing, the casing is sleeved outside the stator, and the casing is connected with the mounting frame through a fastener.

In an alternative embodiment, one section of the stator in the axial direction of the rotor is wrapped by a casing, and the mounting frame comprises a connecting ring sleeved on the stator, and the connecting ring is connected with the casing in the axial direction of the rotor.

In a second aspect, the present application provides a pod for an aircraft, including a working portion for capturing images and a driving mechanism for driving the working portion to move, wherein the driving mechanism includes the motor assembly of any one of the foregoing embodiments.

In an alternative embodiment, the driving mechanism includes three motor assemblies, which are a first motor assembly, a second motor assembly and a third motor assembly, and the driving mechanism further includes a first arm and a second arm, wherein a rotor of the first motor assembly is connected to the first arm, a stator of the second motor assembly is connected to the first arm, a rotor of the second motor assembly is connected to the second arm, a stator of the third motor assembly is connected to the second arm, and a rotor of the third motor assembly is connected to the working portion.

In an alternative embodiment, the rotation axes of the rotors of the first motor assembly, the second motor assembly and the third motor assembly are perpendicular to each other two by two.

In a third aspect, embodiments of the present application provide a drone including a pod according to any one of the preceding embodiments.

The beneficial effects of the embodiment of the application include:

the motor element that this application embodiment provided includes stator, rotor, mounting bracket and drive plate, connects the drive plate in stator or rotor through the mounting bracket for motor element has formed a comparatively compact overall structure. The motor component is convenient to integrally disassemble and assemble, and the installation position of the drive plate is not required to be independently designed on equipment applied to the motor component, so that the cost is reduced. This application embodiment is through designing into a whole with motor element, also is favorable to realizing the miniaturization of equipment.

The nacelle that this application embodiment provided, unmanned aerial vehicle all contain foretell motor element, consequently also have foretell beneficial effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic view of a motor assembly according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating a second perspective view of a motor assembly according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of a motor assembly according to one embodiment of the present application;

FIG. 4 is a schematic view of the mounting bracket and drive plate mating in one embodiment of the present application;

FIG. 5 is a schematic view of a mount according to an embodiment of the present application;

FIG. 6 is a schematic view of the assembly of the rotor and the code wheel in an embodiment of the present application;

FIG. 7 is a schematic view of a pod according to an embodiment of the present application;

FIG. 8 is a schematic view of the mounting of the first motor assembly of the pod in one embodiment of the present application;

FIG. 9 is a schematic view of the mounting of the second motor assembly and the third motor assembly of the pod in one embodiment of the present application.

Icon: 010-nacelle; 100-a motor assembly; 110-a stator; 120-a rotor; 1201-a connecting part; 1202-connecting hole; 121-a scaffold; 1211-annular body; 1212-a first flange; 1213-a limiting part; 1214-a second flange; 122-code wheel; 123-an output shaft; 130-a mounting frame; 131-a connecting ring; 132-a connecting arm; 133-a mounting plate; 134-mounting grooves; 135-heat dissipation boss; 140-a drive plate; 141-I/O interface; 150-a housing; 152-a bearing; 160-a slip ring; 200-a drive mechanism; 210-a first arm; 220-a second arm; 221-a first support arm; 222-a second arm; 223-a third support arm; 101-a first motor assembly; 102-a second motor assembly; 103-a third motor assembly; 300-a working part; 400-mounting seat.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. are used to indicate an orientation or positional relationship based on that shown in the drawings or that the utility model is used to put it in a usual manner, this is only for the convenience of describing and simplifying the present application, and it is not intended to indicate or imply 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 limiting the present application.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present application may be combined with each other without conflict.

FIG. 1 is a schematic view of an exemplary embodiment of an electric motor assembly 100; FIG. 2 is a schematic diagram illustrating a second perspective view of an exemplary motor assembly 100; fig. 3 is a cross-sectional view of an electric motor assembly 100 in an embodiment of the present application. Referring to fig. 1 to fig. 3, a motor assembly 100 provided in the present embodiment is a brushless dc motor assembly 100, which includes a stator 110, a rotor 120, a mounting bracket 130, and a driving plate 140. In this embodiment, the stator 110 is a cylindrical structure and is sleeved outside the rotor 120, the mounting frame 130 is connected to the stator 110, and the driving plate 140 is disposed on the mounting frame 130. The stator 110 is provided with coil windings (not shown) and the rotor 120 is provided with magnetic members. The coil windings of the stator 110 are electrically connected to the driving plate 140, so that the driving plate 140 can control the current of the coil windings, perform electronic commutation, and thus can control the rotor 120 to continuously rotate relative to the stator 110. According to the embodiment of the application, the driving plate 140 and the stator 110 are connected through the mounting frame 130, so that the driving plate 140 does not need to be arranged independently, but forms an integral structure with the stator 110 and the rotor 120, and therefore, the integration level is high, the assembly and disassembly are convenient, and the miniaturization of equipment is convenient to realize.

It should be understood that in alternative embodiments of the present application, the mounting bracket 130 may be disposed on the rotor 120, and the driving plate 140 may be connected to the coil windings on the stator 110 by wires, which is suitable for the case that the rotation angle of the rotor 120 is limited within a certain range to avoid twisting. Alternatively, the coil winding may be disposed on the rotor 120, and the magnetic member may be disposed on the stator 110, so that the rotor 120 may rotate relative to the stator 110.

As shown in fig. 1 and 2, the mounting bracket 130 extends to one end of the stator 110 such that the drive plate 140 on the mounting bracket 130 is spaced apart from the stator 110 in the axial direction of the rotor 120. The driving plate 140 is fixed at one end of the stator 110 in the axial direction through the mounting frame 130, and is spaced and opposite to the stator 110, so that the mounting requirement of the motor assembly 100 can be better met, and if the driving plate 140 is located on the outer circumferential side of the stator 110, the driving plate 140 may have an interference problem when the motor assembly 100 is mounted in a device.

It should be understood that in the present embodiment, the stator 110 is cylindrical, and preferably, the axis thereof coincides with the rotation axis of the rotor 120, so in the description of the present embodiment, the axis of the stator 110 and the axial direction (the axial extending direction) of the stator 110 should be understood the same as the axis of the rotor 120 and the axial direction of the rotor 120.

Fig. 4 is a schematic diagram of the assembly of the mounting frame 130 and the driving plate 140 according to an embodiment of the present application. Referring to fig. 1 to 4, in the present embodiment, the mounting frame 130 includes a mounting plate 133 and a plurality of connecting arms 132, one end of each connecting arm 132 is connected to the outside of the stator 110, the other end of each connecting arm 132 extends in the axial direction of the rotor 120 and is connected to the mounting plate 133, and the driving plate 140 is disposed on the mounting plate 133. Specifically, the mounting bracket 130 further includes a connecting ring 131, the connecting ring 131 is sleeved on the outer side of the stator 110, and one end of the connecting arm 132 is connected to the connecting ring 131. In the present embodiment, the mounting plate 133 is spaced apart from the end of the stator 110 (and the rotor 120), so that interference of the mounting plate 133 or the driving plate 140 provided on the mounting plate 133 with the stator 110 can be prevented. The edges of the drive plate 140 may be perforated to allow for attachment to the mounting plate 133 by fasteners.

The connecting ring 131 may be sleeved on the stator 110 in an interference fit manner, may be directly connected to the outer surface of the stator 110 by a fastener, and may be fixedly connected to other components disposed on the stator 110 as long as it can be relatively fixed to the stator 110. In this embodiment, as shown in fig. 3, the motor assembly 100 further includes a housing 150, the housing 150 is disposed outside the stator 110, and the housing 150 is connected to the mounting frame 130 through a fastening member. Specifically, one section of the stator 110 in the axial direction of the rotor 120 is covered by the casing 150, and the mounting bracket 130 includes a connecting ring 131 sleeved on the stator 110, and the connecting ring 131 is connected to the casing 150 in the axial direction of the rotor 120. The stator 110 and the housing 150 both fix the mounting bracket 130, so that the mounting bracket 130 is more stable. Of course, in other alternative embodiments of the present application, the connecting ring 131 may also be sleeved on the outer side of the casing 150. In the present embodiment, an end of the stator 110 away from the driving plate 140 has an opening, and the motor assembly 100 may further include an output shaft 123 (see fig. 8), where one end of the output shaft 123 is connected to the rotor 120 and the other end of the output shaft extends from an end of the stator 110 away from the driving plate 140 to form an output end. The output shaft 123 and the housing 150 can be rotatably connected through the bearing 152, so that the output shaft 123 is more stable and is not easy to shake in the radial direction.

The support of the mounting plate 133 is achieved by a plurality of connecting arms 132 at intervals, which facilitates weight saving. In this embodiment, the plurality of connecting arms 132 are disposed at regular intervals around the axis of the rotor 120, and can support the mounting plate 133 well. The number of the connecting arms 132 may be set as desired, and in the present embodiment, the number of the connecting arms 132 is four. Coupling the stator 110 to the mounting plate 133 via spaced coupling arms 132 allows airflow to flow between the coupling arms 132, which facilitates heat dissipation from the drive plate 140 on the mounting plate 133. In the present embodiment, an I/O interface 141 is provided on a face of the driving plate 140 facing the rotor 120, and the I/O interface 141 is adjacent to an outer edge of the driving plate 140. Thus, by connecting the stator 110 and the mounting plate 133 via the spaced connecting arms 132, the spaced area between the connecting arms 132 can facilitate insertion and removal of the I/O interface 141, thereby facilitating disassembly and testing.

In this embodiment, the mounting plate 133 is a circular ring-shaped plate, and the driving plate 140 is also a circular ring-shaped plate, both of which are coaxially disposed with the rotor 120 and the stator 110. In addition, the mounting plate 133 is perpendicular to the axial lines of the stator 110 and the rotor 120, and the driving plate 140 is disposed on one surface of the mounting plate 133 facing the rotor 120, so that the driving plate 140 and the components thereon are protected from being collided. The drive plate 140 can also assist in heat dissipation on the side facing the rotor 120.

Fig. 5 is a schematic view of a mounting frame 130 according to an embodiment of the present disclosure. As shown in fig. 5, in the present embodiment, a mounting groove 134 is provided on the mounting plate 133, and the driving plate 140 is disposed in the mounting groove 134, so that the driving plate 140 can be better fixed. Further, a heat dissipation boss 135 is arranged at the bottom of the mounting groove 134, and the heat dissipation boss 135 is used for attaching to a chip on the driving board 140. Since the chip is the main heating element on the driving board 140, the chip can be assisted in heat dissipation by heat conduction by attaching the chip to the heat dissipation boss 135. In this embodiment, the edge of the driving board 140 is further provided with a metal heat conduction layer, and the metal heat conduction layer is in contact with the mounting board 133, so that the heat conduction effect is better. Meanwhile, the metal heat conduction layer at the edge of the driving plate 140 can realize a certain electromagnetic shielding effect, and components on the driving plate 140 are prevented from receiving electromagnetic interference. Optionally, the metal heat conduction layer may be a copper sheet, or another metal material with a good heat conduction effect.

Optionally, an encoder 122 may be further disposed at an end of the rotor 120 close to the drive plate 140, and an encoder may be disposed on the drive plate 140, the encoder being opposite to the encoder 122 in the axial direction of the rotor 120 to identify a rotation angle of the encoder 122, thereby facilitating precise control of the rotation of the rotor 120. FIG. 6 is a schematic view of the assembly of the rotor 120 and the code wheel 122 in an embodiment of the present application. As shown in fig. 6, the rotor 120 has a cavity that penetrates the rotor 120 in the axial direction of the rotor 120 to pass the signal line and the power line. The code wheel 122 is connected to one end of the rotor 120 in the axial direction by a bracket 121. Optionally, a connecting portion 1201 is disposed at one end of the rotor 120 connected to the bracket 121, the connecting portion 1201 protrudes from an inner circumferential surface or an outer circumferential surface of the rotor 120, and the connecting portion 1201 is used to connect to the bracket 121. In the embodiment of fig. 6, the connecting portion 1201 protrudes from the inner circumferential surface of the rotor 120, and the connecting portion 1201 extends around the axis of the rotor 120 to form a ring shape. It should be understood that in alternative embodiments, the connecting portion 1201 need not extend circumferentially to form a ring-shaped structure, and the connecting portion 1201 may be a plurality of protrusions arranged at intervals in the circumferential direction. In the present embodiment, the connecting portion 1201 is provided with a screw hole (not shown) so that the bracket 121 is fixed to the connecting portion 1201 by a screw. In this embodiment, the connecting portion 1201 may further have a connecting hole 1202 for connecting the output shaft 123, and the output shaft 123 is used for connecting with an external structure requiring transmission.

The holder 121 includes an annular body 1211, the annular body 1211 having a first end and a second end in an axial direction thereof, the first end of the annular body 1211 being connected to the rotor 120, the second end of the annular body 1211 being connected to the code wheel 122, the rotor 120 being disposed coaxially with the annular body 1211 of the holder 121. The central cavity of the ring-shaped body 1211 may communicate with the cavity of the rotor 120, and a signal line, a power line, etc. may pass through. The first end of the annular body 1211 is provided with a first flange 1212, the first flange 1212 protrudes from an outer circumferential surface or an inner circumferential surface of the annular body 1211, and the first flange 1212 is connected to the rotor 120. Specifically, the first flange 1212 of the bracket 121 abuts the connecting portion 1201 in the axial direction of the rotor 120, and the first flange 1212 is connected to the connecting portion 1201 by a fastener (e.g., a screw). In the present embodiment, the first flange 1212 protrudes from the inner circumferential surface of the annular body 1211 and abuts against an end surface of the rotor 120, specifically, the connection portion 1201; one end of the first flange 1212, which is away from the annular body 1211, is provided with a limiting portion 1213, and the limiting portion 1213 extends in the axial direction of the rotor 120 and abuts against the inner side of the rotor 120 (in this embodiment, the side of the connecting portion 1201, which is close to the axis of the rotor 120). By providing the connecting portion 1201 on the rotor 120 and providing the first flange 1212 at the first end of the holder 121, the connection between the holder 121 and the rotor 120 can be better achieved; by providing the stopper portion 1213, the position of the holder 121 with respect to the rotor 120 can be better defined, preventing the holder 121 from moving in the radial direction of the rotor 120. In this embodiment, the limiting portion 1213 may extend on the first flange 1212 around the axis of the rotor 120 to form a ring, and of course, the limiting portion 1213 may also be discontinuous in the circumferential direction of the rotor 120, and the limiting portion 1213 may be a plurality of protrusions protruding in the axial direction of the rotor 120 and disposed on the first flange 1212.

Optionally, a second end of the annular body 1211 is provided with a second flange 1214, the second flange 1214 protrudes from an outer or inner circumferential surface of the annular body 1211, and the code wheel 122 is provided with the second flange 1214. As shown in fig. 6, in the present embodiment, the second flange 1214 protrudes from the outer circumferential surface of the annular body 1211. The second flange 1214 extends around the outer peripheral surface of the annular body 1211 to form a ring shape, and the code wheel 122 is also ring-shaped and attached to the second flange 1214. By providing the second flange 1214, a mounting surface for mounting the code wheel 122 can be formed, and by the second flange 1214, the code wheel 122 can be stably mounted on the bracket 121.

In alternative other embodiments of the present application, the bracket 121 may be integrally formed with the rotor 120.

Fig. 7 is a schematic view of the nacelle 010 according to an embodiment of the present application. As shown in fig. 7, the present embodiment also provides a nacelle 010, which is applied to an aircraft, and in particular, to an unmanned aerial vehicle. The pod 010 provided by the embodiment includes a working part 300 for capturing images and a driving mechanism 200 for driving the working part 300 to move, and the driving mechanism 200 includes the motor assembly 100 provided by the embodiment of the present application. In the present embodiment, the working part 300 may be a camera.

Fig. 8 is a schematic view of the mounting of the first motor assembly 101 of the nacelle 010 according to an embodiment of the present application; fig. 9 is a schematic view of the installation of the second motor assembly 102 and the third motor assembly 103 of the nacelle 010 according to an embodiment of the present application. Referring to fig. 7 to 9, in the present embodiment, in order to enable the working portion 300 to have a high degree of freedom and to capture images from various angles, the driving mechanism 200 includes three motor assemblies 100, namely a first motor assembly 101, a second motor assembly 102 and a third motor assembly 103. The three motor assemblies 100 can control the working part 300 to rotate about three different rotation axes. The driving mechanism 200 further includes a first arm 210 and a second arm 220, the rotor 120 of the first motor assembly 101 is connected to the first arm 210, the stator 110 of the second motor assembly 102 is connected to the first arm 210, the rotor 120 of the second motor assembly 102 is connected to the second arm 220, the stator 110 of the third motor assembly 103 is connected to the second arm 220, and the rotor 120 of the third motor assembly 103 is connected to the working part 300. The stator 110 of the first motor assembly 101 is connected to the main body of the aircraft by means of a mounting 400.

Specifically, in the present embodiment, the rotation axes of the rotors 120 of the first motor assembly 101, the second motor assembly 102 and the third motor assembly 103 are perpendicular to each other. Optionally, in a posture when the aircraft is flying in a steady state, the rotation axis of the rotor 120 of the first motor assembly 101 extends in a vertical direction, so as to drive the first arm 210, the second motor assembly 102, the second arm 220, the third motor assembly 103, and the working portion 300 to rotate in a horizontal direction as a whole, thereby enabling the optical axis of the working portion 300 (in a case where the working portion 300 is a camera) to swing in a horizontal direction due to the driving of the first motor assembly 101. As shown in fig. 8, in the present embodiment, the rotor 120 of the first motor assembly 101 is connected to the output shaft 123, the output shaft 123 is connected to the first arm 210, and the outer side of the stator 110 is sleeved with the housing 150, and the output shaft 123 is rotatably connected through the bearing 152. In order to realize the infinite rotation of the working part 300 in the horizontal direction and avoid the wire twisting problem, a slip ring 160 is arranged in the output shaft 123 of the first motor assembly 101 to transmit power and signals, and the static end of the slip ring 160 is fixed relative to the stator 110 and is connected with the cable in the first motor assembly 101; the dynamic end of the slip ring 160 rotates with the output shaft 123 and is connected to the cable in the first arm 210. Of course, in some cases where the rotor 120 does not need to rotate infinitely, for example, if the rotation interval of the rotor 120 is set, the cable may directly pass through the cavity of the rotor 120 and the output shaft 123 without the slip ring 160, as long as the cable is within the rotation interval of the rotor 120, the cable may not be twisted and broken.

As shown in fig. 9, in the present embodiment, the stator 110 of the second motor assembly 102 is fixedly connected to the first arm 210, and the rotor 120 of the second motor assembly 102 is connected to the second arm 220 through the output shaft 123. The axis of rotation of the rotor 120 of the second motor assembly 102 extends in a horizontal direction in attitude when the aircraft is in smooth flight. In this embodiment, the angle between the optical axis of the working part 300 and the rotation axis of the rotor 120 of the third motor assembly 103 does not change with the driving of the second motor assembly 102, but the working part 300 moves in a rolling manner under the driving of the third motor assembly 103. Therefore, the second motor assembly 102 can perform rotation adjustment on the image acquired by the working part 300. Alternatively, when the third motor assembly 103 adjusts the optical axis of the working part 300 to be consistent with the extending direction of the rotation axis of the rotor 120 of the second motor assembly 102, the rotation axis of the rotor 120 of the second motor assembly 102 coincides with the optical axis of the working part 300, in this case, the optical axis of the working part 300 does not move with the driving of the second motor assembly 102, and only the collected image rotates.

In this embodiment, the roll adjustment of the working portion 300 may be limited to a range, and the rotor 120 of the second motor assembly 102 does not need to rotate infinitely, so that the second motor assembly 102 may not need to provide the slip ring 160 in the output shaft 123, and the cable may pass through the output shaft 123 and the cavity of the rotor 120.

As shown in fig. 9, in the present embodiment, the stator 110 of the third motor assembly 103 is connected to the second arm 220, and the rotor 120 of the third motor assembly 103 is connected to the working portion 300, and in the attitude when the aircraft is flying smoothly, the rotation axis of the rotor 120 of the third motor assembly 103 extends in the horizontal direction, but is perpendicular to the rotation axis of the second motor assembly 102. In the present embodiment, the rotation axis of the rotor 120 of the third motor assembly 103 is perpendicular to the optical axis of the working part 300, and the pitch adjustment of the working part 300 can be realized by the third motor assembly 103. In this embodiment, the second arm 220 includes a first arm 221, a second arm 222, and a third arm 223 connected between the first arm 221 and the second arm 222, so that the second arm 220 is formed in a U-shape. The third motor assembly 103 is disposed on the first arm 221, one end of the working portion 300 is connected to the rotor 120 of the third motor assembly 103, and the other end is rotatably connected to the second arm 222. Thereby enabling the optical axis of the working part 300 to swing in the vertical direction under the driving of the third motor assembly 103, and realizing the adjustment of the pitch angle of the working part 300.

It should be appreciated that in alternative embodiments of the present application, the second motor assembly 102 may be configured to effect pitch adjustment of the working portion 300 and the third motor assembly 103 may be configured to effect roll adjustment of the working portion 300. For example, the orientation of the working part 300 is adjusted to make the optical axis of the working part 300 coincide with or parallel to the rotation axis of the rotor 120 of the third motor assembly 103 (note that in this case, it may be inconvenient to provide the second arm 222), and the rotation axis of the rotor 120 of the second motor assembly 102 is kept perpendicular to the optical axis of the working part 300.

In the present embodiment, the horizontal rotation adjustment, the roll adjustment, and the pitch adjustment of the working part 300 are realized by three motor assemblies 100. In alternative embodiments of the present application, the drive mechanism 200 of the nacelle 010 may also include only one or two motor assemblies 100 to control the rotation of the working part 300 in one direction or two directions.

In addition, this application embodiment still provides an unmanned aerial vehicle (not shown in the figure), includes the nacelle 010 that the above-mentioned embodiment of this application provided.

In summary, the present application provides an electric machine assembly 100, a pod 010 and a drone. The motor assembly 100 provided by the embodiment of the application comprises a stator 110, a rotor 120, a mounting frame 130 and a driving plate 140, wherein the driving plate 140 is connected to the stator 110 through the mounting frame 130, so that the motor assembly 100 forms a relatively compact integral structure. This facilitates the overall assembly and disassembly of the motor assembly 100, and facilitates the cost reduction without separately designing the installation position of the driving plate 140 on the device to which the motor assembly 100 is applied. The embodiment of the present application also facilitates miniaturization of the device by designing the motor assembly 100 as a whole.

The nacelle 010 and the unmanned aerial vehicle provided by the embodiment of the application both comprise the motor assembly 100, so that the beneficial effects are also achieved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (17)

1. An electric machine assembly, comprising:

a stator;

a rotor rotatable relative to the stator;

a mounting bracket connected to the stator or the rotor;

and the driving plate is arranged on the mounting frame and is electrically connected with the coil winding of the motor component so as to control the rotor to rotate.

2. The electric motor assembly of claim 1, wherein the coil windings are disposed on the stator, and the mounting bracket is coupled to the stator.

3. The motor assembly of claim 1, wherein said stator is disposed on an outer side of said rotor, and said drive plate is spaced from said stator in an axial direction of said rotor.

4. The motor assembly of claim 3, wherein the mounting bracket includes a mounting plate and a plurality of connecting arms, one end of the connecting arm is connected to an outer side of the stator, the other end of the connecting arm extends in an axial direction of the rotor and is connected to the mounting plate, and the driving plate is disposed on the mounting plate.

5. The motor assembly of claim 4, wherein the plurality of connecting arms are evenly spaced about the axis of the rotor.

6. The motor assembly as claimed in claim 4, wherein the mounting bracket further includes a connecting ring, the connecting ring is sleeved on the outer side of the stator, and one end of the connecting arm is connected to the connecting ring.

7. The motor assembly of claim 4, wherein the mounting plate has a mounting slot disposed thereon, the drive plate being disposed within the mounting slot.

8. The motor assembly of claim 7, wherein the bottom of the mounting slot is provided with a heat dissipation boss for fitting a chip on the driving plate.

9. The motor assembly of claim 4 wherein said drive plate is disposed on a side of said mounting plate facing said rotor.

10. The motor assembly of claim 9, wherein said coil winding is provided on said stator, said rotor is provided with a magnetic member, one end of said rotor adjacent to said drive plate is provided with a code wheel, said drive plate is provided with an encoder, said encoder is opposed to said code wheel in an axial direction of said rotor to identify a rotation angle of said code wheel.

11. The motor assembly of claim 4 wherein said drive plate is a circular plate or an annular plate, wherein an I/O interface is provided on a side of said drive plate facing said rotor, and wherein said I/O interface is adjacent an outer edge of said drive plate.

12. The motor assembly of claim 2, further comprising a housing, wherein the housing is disposed outside the stator, and wherein the housing is connected to the mounting bracket by a fastener.

13. The motor assembly of claim 12, wherein one section of the stator in the axial direction of the rotor is covered by the housing, and the mounting bracket includes a connecting ring sleeved on the stator, and the connecting ring is connected with the housing in the axial direction of the rotor.

14. A pod for an aircraft, comprising a working portion for capturing images and a drive mechanism for driving the movement of the working portion, the drive mechanism comprising a motor assembly according to any one of claims 1 to 13.

15. The pod of claim 14 wherein the drive mechanism comprises three of the motor assemblies, a first motor assembly, a second motor assembly and a third motor assembly, the drive mechanism further comprising a first arm and a second arm, the rotor of the first motor assembly being connected to the first arm, the stator of the second motor assembly being connected to the first arm, the rotor of the second motor assembly being connected to the second arm, the stator of the third motor assembly being connected to the second arm, the rotor of the third motor assembly being connected to the working portion.

16. The pod of claim 15 wherein the axes of rotation of the rotors of the first, second and third motor assemblies are perpendicular two by two.

17. An unmanned aerial vehicle comprising a pod as claimed in any one of claims 14 to 16.

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