WO2021212323A1

WO2021212323A1 - Motor, power device and unmanned aerial vehicle

Info

Publication number: WO2021212323A1
Application number: PCT/CN2020/085924
Authority: WO
Inventors: 李金鑫; 范岩峰; 郑再峰
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-10-28
Also published as: CN112889205A

Abstract

A motor (100), a power device (4000) and an unmanned aerial vehicle (1000). The motor (100) comprises a base (10), a stator (30) and a rotor (20). The rotor (20) covers the base (10) and forms an accommodating space (15), and the stator (30) is fixedly connected to the base (10) and is located in the accommodating space (15). The rotor (20) comprises a first cover (21) and a second cover (22). The first cover (21) comprises a top wall (211) and a side wall (212), the side wall (212) is connected to an outer edge of the top wall (211), the side wall (212) is provided with a through hole (213), and the through hole (213) is in communication with the accommodating space (15) and the outside. The second cover (22) comprises a main body (221) and a centrifugal member (222), the main body (221) is connected to the top wall (211), the centrifugal member (222) is connected to the main body (221), and airflow passing through the through hole (213) is generated when the centrifugal member (222) rotates, so that the accommodating space (15) exchanges gas with the outside.

Description

Motors, power plants and unmanned aerial vehicles

Technical field

This application relates to the technical field of driving devices, and in particular to a motor, a power device and an unmanned aerial vehicle.

Background technique

Motors can convert electrical energy into mechanical energy and are widely used in many fields. Motors are usually equipped with coils. The magnetic field is generated by the changing current applied to the coils. The rotor of the motor rotates under the action of the magnetic field force. However, coils and other components A lot of heat is also generated during work. If the heat cannot be dissipated in time, the temperature inside the motor will be too high, which will affect the normal use of the motor.

Summary of the invention

The embodiments of the present application provide a motor, a power plant, and an unmanned aerial vehicle.

The motor of the embodiment of the present application includes a base, a stator, and a rotor. The rotor is covered on the base and forms an accommodation space. The stator is fixedly connected to the base and is located in the accommodation space. The rotor can Rotating relative to the base and the stator, the rotor includes a first cover and a second cover. The first cover includes a top wall and a side wall, and the side wall is connected to the outside of the top wall. The side wall is provided with a through hole, the through hole communicates the accommodating space with the outside; the second cover includes a base and a centrifugal member, the base is connected to the top wall, and the centrifugal The element is connected to the base body, and when the centrifugal element rotates, an air flow through the through hole is generated, so that the receiving space can exchange gas with the outside.

The power device of the embodiment of the present application includes a motor and a blade, the blade is connected to the motor, and the motor can drive the blade to rotate; the motor includes a base, a stator, and a rotor, and the rotor is covered A receiving space is formed on the base, the stator is fixedly connected to the base and located in the receiving space, the rotor can rotate relative to the base and the stator; the rotor includes a first cover And a second cover, the first cover includes a top wall and a side wall, the side wall is connected to the outer edge of the top wall, the side wall is provided with a through hole, the through hole communicates with the The accommodating space and the outside; the second cover includes a base and a centrifugal member, the base is connected to the top wall, the centrifugal member is connected to the base, and the centrifugal member rotates through the passage The airflow of the hole allows the receiving space to exchange gas with the outside.

The unmanned aerial vehicle of the embodiment of the present application includes a fuselage, an arm and a power device. The arm is connected to the fuselage, and the power device is installed on the arm; the power device includes a motor and a propeller. The blade is connected to the motor, and the motor can drive the blade to rotate; the motor includes a base, a stator, and a rotor. The rotor is shrouded on the base and forms a receiving space. The stator is fixedly connected to the base and located in the accommodating space, the rotor can rotate relative to the base and the stator; the rotor includes a first cover and a second cover, the first cover The body includes a top wall and a side wall, the side wall is connected to the outer edge of the top wall, a through hole is opened on the side wall, and the through hole communicates the receiving space with the outside; the second cover It includes a base body and a centrifugal member, the base body is connected to the top wall, the centrifugal member is connected to the base body, and when the centrifugal member rotates, an air flow passing through the through hole is generated to make the receiving space and The outside air exchanges.

In the motor, power plant, and unmanned aerial vehicle of the embodiments of the present application, the second cover of the rotor includes a centrifugal member, and the centrifugal member can generate airflow through the through hole when rotating, so that the receiving space can exchange gas with the outside. The heat inside can be taken away by the air in time, so that the temperature inside the motor is not too high, and the normal use of the motor is ensured.

The additional aspects and advantages of the embodiments of the present application will be partly given in the following description, and part of them will become obvious from the following description, or be understood through the practice of the embodiments of the present application.

Description of the drawings

The above and/or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

Fig. 1 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present application;

2 is a schematic diagram of a three-dimensional assembly of a motor, a propeller clamp, and a support according to an embodiment of the present application;

Fig. 3 is a three-dimensional exploded schematic diagram of the motor, the propeller clamp and the support according to the embodiment of the present application;

4 is a schematic diagram of a three-dimensional assembly of a motor according to an embodiment of the present application;

Fig. 5 is a schematic diagram of a three-dimensional assembly of a motor according to an embodiment of the present application;

Fig. 6 is a schematic cross-sectional view of a motor according to an embodiment of the present application;

7 to 9 are three-dimensional exploded schematic diagrams of the motor of the embodiment of the present application;

FIG. 10 is a three-dimensional exploded schematic diagram of part of the components of the motor according to the embodiment of the present application;

Fig. 11 is an enlarged schematic diagram of part XI of the motor shown in Fig. 6;

FIG. 12 is a three-dimensional exploded schematic diagram of some components of the motor according to the embodiment of the present application;

Fig. 13 is a three-dimensional exploded schematic view of part of the components of the motor according to the embodiment of the present application.

Detailed ways

The implementation of the present application will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings indicate the same or similar elements or elements with the same or similar functions throughout.

In addition, the implementation manners of the present application described below in conjunction with the drawings are exemplary, and are only used to explain the implementation manners of the present application, and should not be construed as limiting the application.

In this application, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. touch. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

Please refer to FIG. 1, the unmanned aerial vehicle 1000 according to the embodiment of the present application includes a fuselage 2000, an arm 3000 and a power unit 4000. The unmanned aerial vehicle 1000 may be a multi-rotor unmanned aerial vehicle, such as a four-rotor unmanned aerial vehicle, an eight-rotor unmanned aerial vehicle, a twelve-rotor unmanned aerial vehicle, a sixteen-rotor unmanned aerial vehicle, etc., which are not limited here. The unmanned aerial vehicle 1000 can be equipped with loads to perform different tasks, such as an imaging device for shooting, a lighting device for supplement light, a distance measuring device for distance measurement, and a spraying device for fertilizing.

The fuselage 2000 can be used as a carrier for the power supply module, flight control module, pan/tilt, etc. of the UAV 1000, and the load can also be installed on the fuselage 2000. The arm 3000 can also be mounted on the fuselage 2000. For example, multiple arms 3000 are radially mounted on the fuselage 2000. In one example, the arm 3000 is fixedly connected to the fuselage 2000. In another example, the arm 3000 is fixedly connected to the fuselage 2000. 3000 can be folded relative to the fuselage 2000.

The power unit 4000 is installed on the arm 3000. For example, the power unit 4000 can be installed on the end of the arm 3000 away from the fuselage 2000. The power unit 4000 can provide power for the unmanned aerial vehicle 1000 to fly during operation. One power unit 4000 can be installed on one arm 3000, and multiple power units 4000 can be installed on one arm 3000, which is not limited here.

Please refer to FIGS. 1 to 3, the power unit 4000 includes a motor 100, a blade 200 and a blade clamp 300. The motor 100 is connected to the arm 3000, and the blade 200 is fixedly connected to the rotor 20 of the motor 100 through the blade clip 300. The rotor 20 of the motor 100 rotates to drive the blade clip 300 and the blade 200 to rotate, and the blade 200 rotates to generate lift. And thrust to drive the unmanned aerial vehicle 1000 to move. The paddle clamp 300 connects the paddle 200 to the motor 100, and the paddle clamp 300 and the motor 100, and the paddle clamp 300 and the paddle 200 may all be detachably connected, which is not limited here. The motor 100 is mounted on the support 3000. The support 3000 can be any component that can be used to carry the motor 100. In the specification of the present application, the support 3000 is an arm 3000 as an example for illustration.

Please refer to FIGS. 4 to 7. Specifically, the motor 100 includes a base 10, a stator 30 and a rotor 20. The rotor 20 is covered on the base 10, and the rotor 20 and the base 10 together form a receiving space 15. The stator 30 is fixedly connected to the base 10 and is located in the accommodating space 15, and the rotor 20 can rotate relative to the base 10 and the stator 30.

Referring to FIGS. 7 to 10, the base 10 can be used to connect with the support 3000, and the rotor 20 and the stator 30 can be carried on the base 10. The base 10 includes a base body 11 and a first connecting member 12, and the base body 11 and the first connecting member 12 are integrally formed, or in other words, the base body 11 and the first connecting member 12 are an integral structure. The base 10 can be made of plastic and other materials through an integrated molding process, for example, by injection molding, etc., without the need for an additional locking structure to fix the base 11 and the first connecting member 12, and the base 11 and the first The relative positional relationship of the connecting piece 12 is relatively stable, and it is not easy to deviate.

The first connecting member 12 and the accommodating space 15 are located on opposite sides of the base 11. The first connecting member 12 is used for connecting with the supporting member 3000. Specifically, the first connecting member 12 may be separately fixedly connected with the supporting member 3000 to fix the motor 100 on the supporting member 3000, or the first connecting member 12 may also be Cooperate with other structures to fix the motor 100 on the support 3000.

In the example shown in FIGS. 2 and 3, the motor 100 further includes a second connecting member 13, the second connecting member 13 is detachably connected to the first connecting member 12, and the first connecting member 12 is connected to the second connecting member 13 And used to be fixed on the support 3000 together. The second connecting member 13 may also be made of plastic or other materials to reduce the quality of the motor 100 and increase the endurance of the UAV 1000. The first connecting member 12 and the second connecting member 13 can be detachably connected by means of snap connection, screw connection, welding, bonding, etc. In the example shown in the drawings of this application, the first connecting member 12 is provided with a first connecting member 12 A locking hole 122 (shown in FIG. 5), the second connecting member 13 is provided with a second locking hole (not shown), the first locking hole 122 is aligned with the second locking hole, and the locking member 400 Pass through the first locking hole 122 and the second locking hole and lock the first connecting member 12 and the second connecting member 13 so that the first connecting member 12 and the second connecting member 13 clamp the supporting member 3000 together. Wherein, the locking member 400 may be a screw. When the first connecting member 12 and the second connecting member 13 are installed, the locking member 400 may pass through the second locking hole and the first locking hole 122 successively to secure the first The connecting piece 12 is fixed to the second connecting piece 13. When the first connecting piece 12 and the second connecting piece 13 are removed, the locking piece 400 can be taken out to release the fixed connection between the first connecting piece 12 and the second connecting piece 13 In this way, it is convenient for the user to disassemble and assemble the first connecting piece 12 and the second connecting piece 13.

Please continue to refer to FIGS. 2 and 3, the first connecting member 12 and the second connecting member 13 are jointly fixed to the supporting member 3000 in a manner that: the first connecting member 12 is formed with a first notch 121, and the second connecting member 13 is formed There is a second notch 131, and the first notch 121 is opposite to the second notch 131 to allow the support member 3000 to extend into the first notch 121 and the second notch 131. When the first connector 12 and the second connector 13 are installed, the first notch 121 is opposed to the second notch 131, and the shape of the space formed by the first notch 121 and the second notch 131 can be the same as the lateral shape of the support 3000 Similarly, the supporting member 3000 extends into the first notch 121 and the second notch 131, and then the first connecting member 12 and the second connecting member 13 are locked by the locking member 400, so that the first connecting member 12 and the second connecting member 12 are connected to each other. The member 13 clamps the supporting member 3000 together, and the supporting member 3000, the first connecting member 12 and the second connecting member 13 are fixedly connected.

Further, please continue to refer to FIGS. 2 and 3, the motor 100 may further include a bearing member 14, the bearing member 14 is connected to the second connecting member 13, and the bearing member 14 and the first connecting member 12 are located opposite to the second connecting member 13. On both sides. The carrier 14 can be used to carry functional elements that can extend the functions of the UAV 1000. For example, the carrier 14 can be used to install functional elements such as sensors, spraying devices, light-emitting devices, etc., which is not limited herein. In an example, the carrier 14 is used to install a sensor, and the sensor may be one or more of a distance sensor, an image sensor, a position sensor, an inertial measurement unit, and a pressure sensor. The distance sensor may be a microwave radar or a lidar. The image sensor can be an imaging device, an infrared imaging device, a dual-light camera, a three-light camera, etc. The position sensor can be a GPS sensor, an RTK sensor, etc. The inertial measurement unit can be a sensor such as a gyroscope, a speed sensor, and a pressure sensor. It can be a sensor such as a barometer. The sensor installed on the carrier 14 can be used to provide the UAV 1000 with data basis for positioning, obstacle avoidance, speed measurement, shooting, etc., and the sensor does not need to be installed on the fuselage 2000, saving installation space on the fuselage 2000. Specifically, a mounting part 141 is provided on the carrier 14, and the mounting part 141 can be used to provide an installation space for the sensor. In addition, the carrier 14 can also be used to support the unmanned aerial vehicle 1000. When the unmanned aerial vehicle 1000 is landed on the ground, the carrier 14 is supported on the ground. The fuselage 2000 of the human aircraft 1000 landed on the ground.

The base 11 is used for fixed connection with the stator 30. Specifically, referring to the examples shown in FIGS. 10 to 12, the base 10 is provided with a first connecting hole 17, and the first connecting hole 17 penetrates the first connecting member 12 and the base 11. At the same time, the stator 30 is provided with a second connecting hole 31, and the second connecting hole 31 is aligned with the first connecting hole 17 to allow the fastener 600 to penetrate the first connecting hole 17 and the second connecting hole 31 to connect the stator 30 It is fixedly connected with the base body 11. Wherein, the fastener 600 may be a screw, and the first connecting hole 17 and the second connecting hole 31 may be threaded holes. During installation, the stator 30 and the base 11 may be close to make the second connecting hole 31 and the first The connecting holes 17 are aligned, and then the fastener 600 is passed through the first connecting member 12 and the base 11 through the first connecting hole 17 successively, and the fastener 600 is then inserted into the second connecting hole 31 to connect the stator 30. When it needs to be disassembled, the fastener 600 can be taken out from the outside of the motor 100 to facilitate disassembly. Further, the base 10 further includes a positioning protrusion 113, the positioning protrusion 113 protrudes from the base 11 to the receiving space 15, and the first connecting hole 17 penetrates the positioning protrusion 113. A positioning recess 32 is formed on the stator 30, the second connecting hole 31 is opened at the bottom of the positioning recess 32, and the positioning protrusion 113 extends into the positioning recess 32. When the stator 30 is installed on the base 11, by matching the positioning protrusion 113 with the positioning recess 32, the relative position of the base 11 and the stator 30 is easily fixed, so that the first connecting hole 17 and the second connecting hole 31 are aligned. The number of the positioning protrusions 113 and the positioning recesses 32 can be equal, and the number of the positioning protrusions 113 and the positioning recesses 32 can be multiple and matched in a one-to-one correspondence. Of course, in another embodiment, a positioning recess may also be formed on the base 11, the first connecting hole is opened at the bottom of the positioning recess, the stator 30 is provided with positioning protrusions, and the second connecting hole is opened on the positioning protrusions. , The positioning protrusion and the positioning recess are matched, and there is no restriction here.

The base 10 can also be provided with openings for realizing different functions. For example, referring to FIG. 10, the base 10 is provided with a weight-reducing hole 115, one end of the weight-reducing hole 115 is communicated with the receiving space 15, and the other end of the weight-reducing hole 115 is sealed by the first connector 12. Opening the weight-reducing hole 115 can save the material and cost of the base 10, reduce the weight of the base 10, and increase the endurance of the UAV 1000 equipped with the motor 100. In addition, the other end of the weight-reducing hole 115 is sealed by the first connector 12 , To prevent dust or water vapor from entering the containing space 15 from the weight-reducing hole 115. The weight-reducing hole 115 may pass through the seat body 11 and penetrate the first connecting member 12, or may not pass through the seat body 11, which is not limited here. The number of the weight-reducing holes 115 may be one or more, and the plurality of weight-reducing holes 115 may be arranged at intervals.

For another example, referring to FIG. 6, FIG. 9 and FIG. 10, a wiring hole 112 may be opened on the base 11, and the wiring hole 112 is connected to the receiving space 15. The motor 100 further includes a sealing plug 40, the connection line 60 passes through the sealing plug 40 to be electrically connected to the motor 100, and the sealing plug 40 seals the wiring hole 112. An additional wiring hole 112 is provided for the connection line 60 to pass through to electrically connect the motor 100 and external equipment, such as connecting the motor 100 and an electronic speed controller, the connection line 60 passes through the sealing plug 40, and the sealing plug 40 seals the wiring hole 112 , To prevent dust or water vapor from entering the receiving space 15 from the wiring hole 112. The sealing plug 40 may be a rubber plug, which is convenient to be inserted into the wiring hole 112 or taken out from the wiring hole 112. The sealing plug 40 may be made of materials that are prone to elastic deformation. For example, the sealing plug 40 may be made of materials such as rubber or silicone to improve the sealing performance when sealing the wiring hole 112. The supporting member 3000 may be a hollow structure, and the connecting line 60 may further extend inside the supporting member 3000.

For another example, please refer to Figures 10 and 11, the seat body 11 may be provided with an escape hole 114, one end of the escape hole 114 is connected to the receiving space 15, and the other end of the escape hole 114 is sealed by the first connector 12, and the stator 30 is at least Part of it extends into the avoiding hole 114. An avoiding hole 114 is provided on the base 11, and the stator 30 at least partially extends into the avoiding hole 114, so that the stator 30 can be installed closer to the base 11, reducing the overall size of the motor 100, and at the same time, opening the avoiding hole 114 also The weight of the base 10 can be reduced. The other end of the escape hole 114 is sealed by the first connecting member 12, and there is no need to additionally provide a sealing cover for preventing dust or water from entering, which simplifies the structure of the motor 100 and can achieve a better sealing effect. The avoiding hole 114 can penetrate into the first connecting member 12, and the avoiding hole 114 can also be only provided on the base 11, which is not limited here. In addition, as shown in FIG. 11, the base 10 may further include a sealing element 18, and the sealing element 18 is disposed in the avoiding hole 114 and sealing an end of the avoiding hole 114 away from the stator 30. The sealing member 18 may specifically be a PC (polycarbonate) sheet.

For another example, please refer to FIG. 7 and FIG. 9, the base body 11 is provided with a heat dissipation hole 111. The heat dissipation hole 111 communicates with the accommodating space 15, and the air in the accommodating space 15 can flow into the outside through the heat dissipation hole 111 to take away the heat generated during the operation of the motor 100 and reduce the temperature of the motor 100. Further, the base 10 may further include a filter screen 16 connected to the base 10, the filter screen 16 covers the heat dissipation hole 111, and the aperture of the filter hole 161 of the filter screen 16 is smaller than the aperture of the heat dissipation hole 111. , Improve the waterproof and dustproof ability of the motor 100, for example, make the structure of the motor 100 meet the IP44 protection level, which can adapt to a more complex working environment. Specifically, the seat body 11 and the first connecting member 12 may include plastic materials, the filter screen 16 includes metal materials, and the filter screen 16 including metal materials may be fixed to the seat body 11 including plastic materials by hot melt, so that The connection between the filter screen 16 and the seat body 11 is reliable, and there is no need to additionally provide glue for connecting the filter screen 16 and the seat body 11, which reduces the structural complexity of the motor 100. The weight of the body 11 and the first connecting member 12 is relatively light, which reduces the weight of the motor 100.

Referring to FIG. 8, FIG. 12 and FIG. 13, the stator 30 is fixedly connected to the base 11, and the stator 30 is accommodated in the accommodating space 15. The stator 30 includes a connecting portion 33 and a winding portion 34. The connecting portion 33 and the winding portion 34 may be an integrally formed structure, and the connecting portion 33 and the winding portion 34 may be made of metal materials. The connecting portion 33 is used for rotationally connecting with the rotor 20. Specifically, the connecting portion 33 may be cylindrical, and the connecting portion 33 may be provided with a shaft hole 331. The rotating shaft 24 of the rotor 20 can penetrate into the shaft hole 331 to be further rotatably connected with the connecting portion 33. For example, the motor 100 further includes a bearing 50 disposed in the shaft hole 331, and the outer ring of the bearing 50 is fixedly connected to the connecting portion 33, The inner ring of the bearing 50 is fixedly connected to the rotating shaft 24, and the rotating shaft 24 and the inner ring rotate relative to the connecting portion 33 and the outer ring. The number of the bearings 50 may be one or more. In the embodiment of the present application, the number of the bearings 50 is two, and the two bearings 50 are arranged coaxially, and the rotating shaft 24 passes through the two bearings 50 to be rotatably connected with the connecting portion 33. .

Please refer to FIGS. 12 and 13, the winding portion 34 is connected to the outer periphery of the connecting portion 33. The winding part 34 can be wound with a coil. The coil will generate a magnetic field after being energized. The size and direction of the magnetic field can be changed by controlling the current or voltage. The magnetic field generated by the coil interacts with the magnetic field of the rotor 20 to drive the rotor. 20 rotates relative to the stator 30. An end of the winding portion 34 close to the seat body 11 may be provided with the above-mentioned positioning recess 32 and the second connecting hole 31.

Referring to FIGS. 7 to 9, the rotor 20 is arranged on the base 11, and the rotor 20 and the base 11 jointly form the aforementioned receiving space 15, and the rotor 20 can rotate relative to the base 10 and the stator 30. The rotor 20 rotates synchronously as a whole. Please refer to Fig. 2 and Fig. 3, the blade 200 and the rotor 20 are fixedly connected by the blade clamp 300. When the rotor 20 rotates, the blade 200 can be driven to rotate synchronously, and the rotation parameters of the rotor 20 can be controlled. The rotation parameters of the blade 200 are controlled.

The rotor 20 includes a rotating shaft 24, a first cover 21, a second cover 22 and a yoke 23. The rotating shaft 24 penetrates the first cover 21, the second cover 22, the bearing 50 and the shaft hole 331. As shown in FIGS. 11 to 13, the rotor 20 further includes a locking member 25 connected to the rotating shaft 24 and used to limit the axial position of the bearing 50. Along the axial direction of the rotating shaft 24, at least a first cover 21, a bearing 50, another bearing 50, and a locking member 25 may be arranged in sequence. The first cover 21 abuts the inner ring of the one bearing 50 and locks The stopper 25 is fixed on the rotating shaft 24 and used to resist the inner ring of the other bearing 50. Further, in an example, a spacer 26 may be provided between the locking member 25 and the other bearing 50, and both sides of the spacer 26 are respectively held by the inner ring of the other bearing 50 and the locking member 25. , To compensate for the distance between the locking member 25 and the inner ring.

Please refer to FIGS. 7 to 9, the first cover 21 and the second cover 22 are penetrated by the rotating shaft 24. Specifically, in the embodiment of the present application, the first cover 21 includes a top wall 211 and a side wall 212. The side wall 212 is connected to the outer edge of the top wall 211. The side wall 212 is provided with a through hole 213 that communicates the receiving space 15 with the outside. The air in the receiving space 15 can enter the outside through the through hole 213, and the outside air can also enter the receiving space 15 through the through hole 213. The top wall 211 may specifically include a plurality of reinforcing ribs 2111 arranged at intervals. One end of the plurality of reinforcing ribs 2111 may be connected to the side wall 212, and the other end may be connected at the middle position of the top wall 211, so that the plurality of reinforcing ribs 2111 are spokes. A plurality of reinforcing ribs 2111 are arranged in a linear distribution, so that the first cover body 21 has a higher strength, and can save the material of the first cover body 21 and reduce the weight of the first cover body 21. The side wall 212 may have an annular shape as a whole, and the through hole 213 on the side wall 212 may have a slit shape, so that air can easily circulate through the through hole 213, and dust and water droplets cannot easily enter the receiving space 15 through the through hole 213. .

Please continue to refer to FIGS. 7-9, the second cover 22 is combined with the first cover 21. For example, the second cover 22 can be detachably connected to the first cover 21, and the two sides of the second cover 22 It can be clamped by the first cover 21 and the paddle clip 300 respectively, so that the first cover 21, the second cover 22, the paddle clip 300 and the paddle 200 rotate synchronously. The second cover 22 includes a base 221 and a centrifugal element 222. The base 221 is connected to the top wall 211, the base 221 may be a flat plate, the base 221 may be a circle as a whole, and the first cover 21 and the second cover 22 can be fixedly connected by a screw 70. The centrifugal member 222 is connected to the base 221. The centrifugal member 222 rotates to generate air flow through the through hole 213, so that the receiving space 15 exchanges air with the outside. In this way, when the motor 100 is working, the rotor 20 drives the paddle clamp 300 Simultaneously with the rotation of the blade 200, the rotating centrifugal member 222 can also promote gas exchange between the receiving space 15 and the outside, thereby realizing active heat dissipation of the motor 100 and improving the heat dissipation efficiency of the motor 100. Specifically, the specific form of the centrifugal element 222 may be a centrifugal blade. The centrifugal blade is located between the adjacent reinforcing ribs 2111. There will be no interference between the centrifugal element 222 and the top wall 211, and the centrifugal element 222 can drive the containing space when it rotates. Air flow within 15. In addition, the split cover composed of the first cover 21 and the second cover 22 is more convenient for transportation and storage than the one-piece cover, which can reduce the processing cost while facilitating assembly.

In addition, the first cover 21 is made of a metal material. In other words, the first cover 21 may include a metal material. The metal material may be, for example, iron, stainless steel, copper, etc., so that the strength of the first cover 21 is relatively high. Therefore, the bending moment resistance of the first cover 21 is improved, and the first cover 21 is not easily deformed. At the same time, the thermal conductivity of the first cover 21 is good, and the heat in the receiving space 15 can be quickly conducted out through the first cover 21. The second cover 22 may be made of plastic material. In other words, the second cover 22 may include plastic material. The second cover 22 may be integrally formed by injection molding. The second cover 22 of plastic material is used to make the motor The overall weight of the 100 is relatively light, which improves the endurance of the unmanned aerial vehicle 1000. At the same time, the split cover composed of the first cover 21 and the second cover 22 made of different materials is easier to process and shape.

Further, referring to FIG. 3, FIG. 7 and FIG. 8, the first cover body 21 may further include a connecting protrusion 214 connected to the top wall 211, and the base body 221 is provided with a connecting through hole 2211. The connecting protrusion 214 extends into the connecting through hole 2211 and cooperates with the connecting through hole 2211. The connecting protrusion 214 may be used to rotate with the rotating member. When the rotor 20 is used to drive the paddle 200 to rotate, the rotating member may be the paddle clamp 300 and the paddle 200. The shapes of the connecting protrusion 214 and the connecting through hole 2211 can be adapted to each other, so that the user can position the installation angle of the first cover 21 and the second cover 22 when installing the first cover 21 and the second cover 22. The rotating shaft 24 can pass through the connecting protrusion 214 and the connecting through hole 2211, and is connected with the paddle clip 300. In particular, the paddle clamp 300 and the paddle 200 can be detachably connected, or the two can also be integrally formed.

The connecting protrusion 214 may be provided with a fixing hole 2141 to allow the locking member 500 to pass through the rotating member and the fixing hole 2141 and to fix the rotating member with the rotor 20. When the rotor 20 is used for rotating connection with the paddle clamp 300, the locking member 500 penetrates the paddle clamp 300 and the fixing hole 2141 to fix the paddle clamp 300 and the rotor 20. The paddle clip 300 can hold one side of the base 221, and the top wall 211 hold the other side of the base 221 to prevent the second cover 22 from moving. Furthermore, the base 221 may be provided with an escape groove 2212, the escape groove 2212 and the centrifugal member 222 are located on opposite sides of the base 221, and the escape groove 2212 is used to avoid the rotating member (paddle clamp 300). The specific shape of the avoidance groove 2212 can be set according to the specific shape of the paddle clamp 300. The paddle clamp 300 may partially extend into the avoidance groove 2212, or the blade 200 may extend at least partially into the avoidance groove 2212 to reduce the paddle clamp. The distance between 300 and the second cover 22 reduces the overall thickness of the paddle clip 300 after mating with the second cover 22.

Referring to Figures 7 and 8, the yoke 23 surrounds the periphery of the stator 30, and a magnet can be connected to the yoke 23. The magnetic field generated by the magnet interacts with the magnetic field generated by the above-mentioned coil, and the magnet drives the magnet under the action of the magnetic field force. The yoke 23, the first cover 21, the second cover 22 and the rotating shaft 24 rotate. The yoke 23 is connected to the first cover 21. Specifically, the first cover 21 includes a fixing member 215 connected to the side wall 212, and the fixing member 215 and the top wall 211 are respectively located at opposite ends of the side wall 212, The fixing member 215 is used for fixed connection with the yoke 23. The fixing member 215 may include a plurality of fixed teeth spaced apart from each other. When the magnetic yoke 23 is connected to the fixing member 215, the magnetic yoke 23 can cover the fixed teeth and cover a part of the side wall 212, so that the appearance of the rotor 20 is more complete and Beautiful. More specifically, the magnetic yoke 23 has a ring shape, the fixing member 215 and the magnetic yoke 23 are matched by interference fit, and the fixing member 215 is at least partially embedded in the magnetic yoke 23. By means of interference fit, no additional fixing device is needed to fix the yoke 23 and the first cover 21, and the total weight of the rotor 20 is reduced.

In summary, in the motor 100, the power unit 4000, and the UAV 1000 of the embodiment of the present application, the second cover 22 of the rotor 20 includes a centrifugal member 222. The centrifugal member 222 can generate airflow through the through hole 213 when rotating, so as to The accommodating space 15 can exchange air with the outside, and the heat in the accommodating space 15 can be taken away by the air in time, so that the temperature inside the motor 100 is not too high, and the normal use of the motor 100 is ensured.

In the description of this specification, reference to the description of the terms "certain embodiments", "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. means to incorporate the implementation The specific features, structures, materials or characteristics described by the examples or examples 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 described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "a plurality of" means at least two, for example two, three, unless otherwise specifically defined.

Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present application. A person of ordinary skill in the art can comment on the foregoing within the scope of the present application. The embodiments are subject to changes, modifications, substitutions and modifications, and the scope of this application is defined by the claims and their equivalents.

Claims

A motor, characterized in that the motor includes a base, a stator, and a rotor, the rotor is covered on the base and forms an accommodation space, and the stator is fixedly connected to the base and located in the accommodation space , The rotor can rotate relative to the base and the stator, and the rotor includes:

A first cover, the first cover includes a top wall and a side wall, the side wall is connected to the outer edge of the top wall, the side wall is provided with a through hole, and the through hole communicates with the receiving Space and the outside world; and

The second cover, the second cover includes a base and a centrifugal member, the base is connected to the top wall, the centrifugal member is connected to the base, and the centrifugal member rotates through the passage The airflow of the hole allows the receiving space to exchange gas with the outside.
The motor according to claim 1, wherein the first cover comprises a metal material; and/or

The second cover includes a plastic material.
The motor according to claim 1, wherein the top wall includes a plurality of reinforcing ribs arranged at intervals, the centrifugal member includes a plurality of centrifugal blades, and the centrifugal blades are located between adjacent reinforcing ribs .
The motor according to any one of claims 1 to 3, wherein the first cover further comprises a connecting protrusion connected to the top wall, a connecting through hole is opened on the base, and the The connecting protrusion extends into the connecting through hole and cooperates with the connecting through hole.
The motor according to claim 4, wherein the rotor is used to drive the rotating member to rotate, and the connecting protrusion is provided with a fixing hole to allow the locking member to pass through the rotating member and the fixing hole, And the rotating part is fixedly connected with the rotor.
The motor according to any one of claims 1 to 3, wherein the rotor is used to be fixedly connected to the rotating part and drive the rotating part to rotate, the base body is provided with an escape groove, and the escape groove is connected to the The centrifugal member is located on opposite sides of the base body, and the avoiding groove is used to avoid the rotating member.
The motor according to any one of claims 1 to 3, wherein the rotor further comprises a yoke, the first cover further comprises a fixing member connected to the side wall, the fixing member and The top wall is respectively located at opposite ends of the side wall, and the fixing member is used for fixed connection with the magnetic yoke.
The motor according to claim 7, wherein the magnetic yoke is ring-shaped, the fixing member and the magnetic yoke are matched by interference fit, and the fixing member is at least partially embedded in the magnetic yoke .
The motor according to claim 1, wherein the base includes a seat body and a first connecting member, the seat body and the first connecting member are an integral structure, and the first connecting member is connected to the receiving member. The space is located on opposite sides of the seat body, and the first connecting piece is used for connecting with the supporting piece.
The motor according to claim 9, wherein the motor further comprises a second connecting member, the second connecting member is detachably connected to the first connecting member, and the first connecting member is connected to the first connecting member. The second connecting member is connected and used to be jointly fixed on the support member.
The motor according to claim 10, wherein the first connecting member is formed with a first notch, the second connecting member is formed with a second notch, and the first notch is opposite to the second notch, This allows the support member to extend into the first gap and the second gap.
The motor according to claim 10, wherein the first connecting member is provided with a first locking hole, the second connecting member is provided with a second locking hole, and the first locking hole is connected to the The second locking hole is aligned, the locking member passes through the first locking hole and the second locking hole and locks the first connecting member and the second connecting member, so that the The first connecting piece and the second connecting piece clamp the support piece together.
The motor according to claim 10, wherein the motor further comprises a bearing member, the bearing member is connected to the second connecting member, and the bearing member and the first connecting member are located on the first connecting member. On the two opposite sides of the two connecting parts, the load-bearing parts are used for installing sensors.
The motor according to claim 13, wherein the sensor includes one or more of a distance sensor, an image sensor, a position sensor, an inertial measurement unit, and a pressure sensor.
The motor according to claim 13, wherein the carrier is used to support an unmanned aerial vehicle including the support.
The motor according to claim 9, wherein the base body is provided with a heat dissipation hole, the base further includes a filter screen, the filter screen is connected to the base, and the filter screen covers the heat dissipation hole , The aperture of the filter hole of the filter screen is smaller than the aperture of the heat dissipation hole.
The motor according to claim 16, wherein the base body and the first connecting member comprise plastic material, the filter screen comprises a metal material, and the metal material is fixed to the plastic material by hot melting. Material.
The motor according to claim 9, wherein the base body is provided with a wiring hole, the wiring hole is in communication with the accommodating space, the motor further comprises a sealing plug, and the connecting line passes through the sealing The plug is electrically connected with the motor, and the sealing plug seals the wiring hole.
The motor according to claim 9, wherein the base is provided with a first connecting hole, the first connecting hole penetrates the first connecting member and the base, and the stator is provided with a second connecting hole. Hole, the second connecting hole is aligned with the first connecting hole to allow fasteners to penetrate the first connecting hole and the second connecting hole to fixedly connect the stator and the base .
The motor according to claim 19, wherein the base further comprises a positioning protrusion, the positioning protrusion protrudes from the base body toward the accommodating space, and the first connecting hole penetrates the positioning A protrusion, a positioning recess is formed on the stator, the second connecting hole is opened at the bottom of the positioning recess, and the positioning protrusion extends into the positioning recess.
The motor according to claim 9, wherein the base is provided with an escape hole, one end of the escape hole communicates with the receiving space, and the other end of the escape hole is sealed by the first connecting member, The stator at least partially extends into the escape hole.
The motor according to claim 9, wherein the base is provided with an escape hole, one end of the escape hole is in communication with the receiving space, and the other end of the escape hole is penetrated with the first connector, The base further includes a sealing element which is arranged in the escape hole and seals an end of the escape hole away from the stator.
The motor according to claim 9, wherein the base is provided with a weight-reducing hole, one end of the weight-reducing hole is connected to the receiving space, and the other end of the weight-reducing hole is connected by the first Pieces are sealed.
The motor according to claim 1, wherein the stator includes a connecting part and a winding part, the winding part is connected to the outer periphery of the connecting part, and the connecting part is provided with a shaft hole, so The rotor further includes a rotating shaft, the motor further includes a bearing, the bearing is arranged in the shaft hole, the rotating shaft passes through the second cover, the first cover and the bearing, the rotating shaft The bearing is rotatably connected with the connecting part.
A power device, characterized in that the power device includes a motor and a blade, the blade is connected to the motor, and the motor can drive the blade to rotate;

The motor includes a base, a stator, and a rotor. The rotor is covered on the base and forms an accommodation space. The stator is fixedly connected to the base and is located in the accommodation space. The base and the stator rotate, and the rotor includes:

A first cover, the first cover includes a top wall and a side wall, the side wall is connected to the outer edge of the top wall, the side wall is provided with a through hole, and the through hole communicates with the receiving Space and the outside world; and

The second cover, the second cover includes a base and a centrifugal member, the base is connected to the top wall, the centrifugal member is connected to the base, and the centrifugal member rotates through the passage The airflow of the hole allows the receiving space to exchange gas with the outside.
The power plant according to claim 25, wherein the first cover comprises a metal material; and/or

The second cover includes a plastic material.
The power plant according to claim 25, wherein the top wall includes a plurality of reinforcing ribs arranged at intervals, the centrifugal member includes a plurality of centrifugal blades, and the centrifugal blades are located between adjacent reinforcing ribs. between.
The power plant according to any one of claims 25 to 27, wherein the first cover further comprises a connecting protrusion connected to the top wall, and a connecting through hole is opened on the base, so The connecting protrusion extends into the connecting through hole and is matched with the connecting through hole.
The power plant according to claim 28, wherein the rotor is fixedly connected to the blade through a blade clip, and a fixing hole is opened on the connecting protrusion to allow the locking member to pass through the blade clip and The fixing hole connects the paddle clamp and the rotor in a fixed manner.
The power plant according to any one of claims 25 to 27, wherein the rotor is fixedly connected to the blade through a paddle clip, the base body is provided with an escape groove, the escape groove and the centrifugal member Located on opposite sides of the base body, the avoiding groove is used to avoid the paddle clamp and/or the paddle blade.
The power plant according to any one of claims 25 to 27, wherein the rotor further comprises a yoke, the first cover further comprises a fixing member connected to the side wall, the fixing member The top wall and the top wall are respectively located at opposite ends of the side wall, and the fixing member is used for fixed connection with the magnetic yoke.
The power plant according to claim 31, wherein the magnetic yoke is ring-shaped, the fixing member and the magnetic yoke are matched by interference fit, and the fixing member is at least partially embedded in the magnetic yoke Inside.
The power plant according to claim 25, wherein the base includes a seat body and a first connecting piece, the seat body and the first connecting piece are an integral structure, and the first connecting piece is connected to the first connecting piece. The accommodating space is located on opposite sides of the seat body, and the first connecting piece is used for connecting with the supporting piece.
The power plant according to claim 33, wherein the motor further comprises a second connecting member, the second connecting member is detachably connected to the first connecting member, and the first connecting member is connected to the first connecting member. The second connecting member is connected and used to be jointly fixed on the support member.
The power plant according to claim 34, wherein the first connecting member is formed with a first notch, the second connecting member is formed with a second notch, and the first notch is opposite to the second notch. , To allow the support member to extend into the first gap and the second gap.
The power plant according to claim 34, wherein the first connecting member is provided with a first locking hole, the second connecting member is provided with a second locking hole, and the first locking hole is connected to the The second locking holes are aligned, and the locking member passes through the first locking hole and the second locking hole and locks the first connecting member and the second connecting member, so that the The first connecting piece and the second connecting piece clamp the support piece together.
The power plant according to claim 34, wherein the motor further comprises a bearing member, the bearing member is connected to the second connecting member, and the bearing member and the first connecting member are located in the On opposite sides of the second connecting member, the bearing member is used for mounting the sensor.
The power plant according to claim 37, wherein the sensor includes one or more of a distance sensor, an image sensor, a position sensor, an inertial measurement unit, and a pressure sensor.
The power plant according to claim 37, wherein the carrier is used to support an unmanned aerial vehicle including the support.
The power plant according to claim 33, wherein the base body is provided with heat dissipation holes, the base further includes a filter screen, the filter screen is connected to the base, and the filter screen covers the heat dissipation hole. Holes, the hole diameter of the filter hole of the filter screen is smaller than the hole diameter of the heat dissipation hole.
The power plant of claim 40, wherein the seat body and the first connecting member comprise plastic material, the filter screen comprises a metal material, and the metal material is fixed to the On plastic materials.
The power plant according to claim 33, wherein the base is provided with a wiring hole, the wiring hole is in communication with the accommodating space, the motor further includes a sealing plug, and the connecting line passes through the The sealing plug is electrically connected with the motor, and the sealing plug seals the wiring hole.
The power plant according to claim 33, wherein the base is provided with a first connecting hole, the first connecting hole penetrates the first connecting member and the base, and the stator is provided with a second connecting hole. A connecting hole, the second connecting hole is aligned with the first connecting hole to allow fasteners to penetrate the first connecting hole and the second connecting hole to fix the stator and the base connect.
The power plant according to claim 43, wherein the base further comprises a positioning protrusion, the positioning protrusion protrudes from the base body toward the accommodating space, and the first connecting hole penetrates the A positioning protrusion, a positioning recess is formed on the stator, the second connecting hole is opened at the bottom of the positioning recess, and the positioning protrusion extends into the positioning recess.
The power plant according to claim 33, wherein the base is provided with an escape hole, one end of the escape hole communicates with the accommodation space, and the other end of the escape hole is sealed by the first connector , The stator at least partially extends into the escape hole.
The power plant according to claim 33, wherein the base is provided with an escape hole, one end of the escape hole communicates with the accommodation space, and the other end of the escape hole penetrates the first connecting member The base further includes a sealing element which is arranged in the escape hole and seals an end of the escape hole away from the stator.
The power plant according to claim 33, wherein the base is provided with a weight-reducing hole, one end of the weight-reducing hole is in communication with the receiving space, and the other end of the weight-reducing hole is connected by the first The connection is sealed.
The power plant according to claim 25, wherein the stator includes a connecting part and a winding part, the winding part is connected to the outer periphery of the connecting part, and the connecting part is provided with a shaft hole, The rotor further includes a rotating shaft, the motor further includes a bearing, the bearing is arranged in the shaft hole, and the rotating shaft penetrates the second cover, the first cover and the bearing, the The rotating shaft is rotatably connected with the connecting portion through the bearing.
An unmanned aerial vehicle, characterized in that the unmanned aerial vehicle includes a fuselage, an arm and a power device, the arm is connected to the fuselage, and the power device is installed on the arm;

The power device includes a motor and a blade, the blade is connected to the motor, and the motor can drive the blade to rotate;

The motor includes a base, a stator, and a rotor. The rotor is covered on the base and forms an accommodation space. The stator is fixedly connected to the base and is located in the accommodation space. The base and the stator rotate, and the rotor includes:

A first cover, the first cover includes a top wall and a side wall, the side wall is connected to the outer edge of the top wall, the side wall is provided with a through hole, and the through hole communicates with the receiving Space and the outside world; and

The second cover, the second cover includes a base and a centrifugal member, the base is connected to the top wall, the centrifugal member is connected to the base, and the centrifugal member rotates through the passage The airflow of the hole allows the receiving space to exchange gas with the outside.
The unmanned aerial vehicle according to claim 49, wherein the first cover comprises a metal material; and/or

The second cover includes a plastic material.
The unmanned aerial vehicle according to claim 49, wherein the top wall includes a plurality of stiffeners arranged at intervals, the centrifugal member includes a plurality of centrifugal blades, and the centrifugal blades are located adjacent to the stiffeners. between.
The unmanned aerial vehicle according to any one of claims 49 to 51, wherein the first cover body further comprises a connecting protrusion connected to the top wall, and a connecting through hole is opened on the base body, The connecting protrusion extends into the connecting through hole and cooperates with the connecting through hole.
The unmanned aerial vehicle according to claim 52, wherein the rotor is fixedly connected to the blade through a blade clip, and a fixing hole is opened on the connecting protrusion to allow the locking member to pass through the blade clip And the fixing hole, and fixedly connect the paddle clip with the rotor.
The unmanned aerial vehicle according to any one of claims 49 to 51, wherein the rotor is fixedly connected to the blade through a paddle clip, the base body is provided with an escape groove, and the escape groove is connected to the centrifugal The parts are located on opposite sides of the base body, and the avoiding groove is used to avoid the paddle clamp and/or the paddle blade.
The unmanned aerial vehicle according to any one of claims 49 to 51, wherein the rotor further comprises a yoke, the first cover further comprises a fixing member connected to the side wall, and the fixing And the top wall are respectively located at opposite ends of the side wall, and the fixing member is used for fixed connection with the magnetic yoke.
The unmanned aerial vehicle according to claim 55, wherein the magnetic yoke is ring-shaped, the fixing member and the magnetic yoke are matched by interference fit, and the fixing member is at least partially embedded in the magnetic yoke. Inside the yoke.
The unmanned aerial vehicle of claim 49, wherein the base includes a base body and a first connecting member, the base body and the first connecting member are an integral structure, and the first connecting member and the first connecting member The accommodating space is located on opposite sides of the base body, and the first connecting member is used for connecting with the arm.
The unmanned aerial vehicle according to claim 57, wherein the motor further comprises a second connecting member, the second connecting member is detachably connected to the first connecting member, and the first connecting member is detachably connected to the first connecting member. The second connecting member is connected and used to be jointly fixed on the arm.
The unmanned aerial vehicle of claim 58, wherein the first connecting member is formed with a first notch, the second connecting member is formed with a second notch, and the first notch is connected to the second notch. Opposite, so as to allow the arm to extend into the first gap and the second gap.
The unmanned aerial vehicle of claim 58, wherein the first connecting member is provided with a first locking hole, the second connecting member is provided with a second locking hole, and the first locking hole Align with the second locking hole, the locking member passes through the first locking hole and the second locking hole and locks the first connecting member and the second connecting member, so that The first connecting piece and the second connecting piece jointly clamp the arm.
The unmanned aerial vehicle according to claim 58, wherein the motor further comprises a bearing member, the bearing member is connected to the second connecting member, and the bearing member and the first connecting member are located at the same position. On the opposite sides of the second connecting member, the bearing member is used for mounting a sensor.
The unmanned aerial vehicle according to claim 61, wherein the sensor comprises one or more of a distance sensor, an image sensor, a position sensor, an inertial measurement unit, and a pressure sensor.
The unmanned aerial vehicle according to claim 61, wherein the carrier is used to support the unmanned aerial vehicle.
The unmanned aerial vehicle according to claim 57, wherein the base is provided with heat dissipation holes, the base further includes a filter, the filter is connected to the base, and the filter covers the A heat dissipation hole, the aperture of the filter hole of the filter screen is smaller than the aperture of the heat dissipation hole.
The unmanned aerial vehicle according to claim 64, wherein the base and the first connecting member comprise plastic material, the filter screen comprises a metal material, and the metal material is fixed to the place by heat fusion. Said on the plastic material.
The unmanned aerial vehicle according to claim 57, wherein the base is provided with a wiring hole, the wiring hole is in communication with the receiving space, the motor further includes a sealing plug, and the connecting line passes through the The sealing plug is electrically connected with the motor, and the sealing plug seals the wiring hole.
The unmanned aerial vehicle of claim 57, wherein the base is provided with a first connecting hole, the first connecting hole penetrates the first connecting member and the base, and the stator is provided with a first connecting hole. Two connecting holes, the second connecting hole is aligned with the first connecting hole to allow fasteners to penetrate the first connecting hole and the second connecting hole to connect the stator and the base Fixed connection.
The unmanned aerial vehicle according to claim 67, wherein the base further comprises a positioning protrusion, the positioning protrusion protrudes from the base body toward the receiving space, and the first connecting hole penetrates the accommodating space. In the positioning protrusion, a positioning recess is formed on the stator, the second connecting hole is opened at the bottom of the positioning recess, and the positioning protrusion extends into the positioning recess.
The unmanned aerial vehicle according to claim 57, wherein the base is provided with an escape hole, one end of the escape hole communicates with the accommodation space, and the other end of the escape hole is connected by the first connector Sealing, the stator at least partially extends into the escape hole.
The unmanned aerial vehicle according to claim 57, wherein the base is provided with an escape hole, one end of the escape hole communicates with the accommodation space, and the other end of the escape hole penetrates the first connection The base further includes a sealing element which is arranged in the escape hole and seals an end of the escape hole away from the stator.
The unmanned aerial vehicle of claim 57, wherein the base is provided with a weight-reducing hole, one end of the weight-reducing hole is in communication with the receiving space, and the other end of the weight-reducing hole is connected by the first A connecting piece is sealed.
The unmanned aerial vehicle according to claim 49, wherein the stator includes a connecting portion and a winding portion, the winding portion is connected to the outer periphery of the connecting portion, and the connecting portion is provided with a shaft hole , The rotor further includes a rotating shaft, the motor further includes a bearing, the bearing is arranged in the shaft hole, the rotating shaft passes through the second cover, the first cover and the bearing, so The rotating shaft is rotatably connected with the connecting portion through the bearing.