CN213620224U

CN213620224U - Power device and flight equipment

Info

Publication number: CN213620224U
Application number: CN202021940938.9U
Authority: CN
Inventors: 罗东东
Original assignee: SF Technology Co Ltd
Current assignee: Fengyi Technology (Shenzhen) Co.,Ltd.
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-07-06
Anticipated expiration: 2030-09-08

Abstract

The application discloses power device and flight equipment. This power device's stator module is including locating in the casing and the first winding stator and the second winding stator that the interval set up, and the rotor subassembly includes the motor shaft of being connected with the casing rotation, surrounds a plurality of first magnets of first winding stator, and surrounds a plurality of second magnets of second winding stator, the first end fixed connection first screw of motor shaft, the second end fixed connection second screw of motor shaft. Through first winding stator and first magnet mutually supporting to and second winding stator and second magnet mutually support, drive the motor shaft jointly and rotate, make the motor shaft have sufficient power and can drive two screw rotations, thereby improve power device's power-to-weight ratio.

Description

Power device and flight equipment

Technical Field

The utility model relates to an aerospace field, concretely relates to power device and flight equipment.

Background

With the progress of society, flight equipment is more and more popular, and the mode that adopts flight equipment (for example unmanned aerial vehicle) to transport article is also more and more popular, therefore flight equipment's loading capacity is receiving much attention. As shown in fig. 1, a schematic diagram of a horn of a prior art flying apparatus is shown, in the prior art, two power devices 200 '(such as motors) are mounted on one horn 100', and the two power devices 200 'are respectively connected with two propellers 300' to drive so as to increase the power of the flying apparatus, thereby increasing the cargo capacity of the flying apparatus. However, the flying equipment is very sensitive to the self weight, the power device 200 'has a heavy self weight, and the two power devices 200' respectively drive the two propellers 300 'not only can cause the weight of the flying equipment to be heavy, but also can cause the power device 200' to have a low power-to-weight ratio (power-to-weight ratio).

SUMMERY OF THE UTILITY MODEL

The application provides a power device and flight equipment to solve the problem that prior art power device power-to-weight ratio is low.

In one aspect, the present application provides a power device for use in a flying apparatus to drive a propeller of the flying apparatus, comprising: a housing, a stator assembly and a rotor assembly;

the stator assembly comprises a first winding stator and a second winding stator which are arranged in the shell at intervals;

the rotor assembly comprises a motor shaft which is rotatably connected with the machine shell, a plurality of first magnets which surround the first winding stator, and a plurality of second magnets which surround the second winding stator;

the first end fixed connection first screw of motor shaft, the second end fixed connection second screw of motor shaft.

In some possible implementations, the housing includes a support frame having a first protrusion thereon; the first winding stator and the second winding stator are sleeved on the first protruding portion.

In some possible implementations, the stator assembly further includes a first support frame sleeved on the first boss and located between the first winding stator and the second winding stator.

In some possible implementations, a first through hole is provided in the first boss to pass through the first boss; the first end of the motor shaft penetrates through the first bulge;

the rotor assembly further comprises at least one bearing which is positioned in the first through hole and sleeved on the motor shaft; the outer ring of the bearing is fixedly connected with the first protruding portion, and the inner ring of the bearing is fixedly connected with the motor shaft.

In some possible implementations, the rotor assembly further includes a first end cap fixedly connected to the motor shaft, and a housing fixedly connected to the first end cap;

the housing encloses the first winding stator and the second winding stator;

the plurality of first magnets and the plurality of second magnets are all fixedly connected with the shell.

In some possible implementations, the rotor assembly further includes a second cage fixedly coupled to the housing and positioned between the first plurality of magnets and the second plurality of magnets.

In some possible implementations, the rotor assembly further includes a locking portion disposed outside the support frame and fixedly connected to the motor shaft.

In some possible implementations, the motor shaft is provided with a first groove and a second groove which are arranged at intervals, the locking portion is fixed in the first groove, and the first propeller is fixed in the second groove.

In some possible implementations, the rotor assembly further includes at least one spacer located between the locking portion and the support frame, and the spacer is sleeved on the motor shaft.

In some possible implementations, the rotor assembly further includes a snap ring between the spacer and the locking portion, the snap ring being fitted on the motor shaft.

In some possible implementations, the casing further includes a second end cap fixedly connected to the supporting frame, and the second end cap has a second hollow protrusion; a first through hole penetrating through the first protruding part is formed in the first protruding part; the first end of the motor shaft extends to the outside of the housing through the first boss and the second boss.

In some possible implementations, the power plant further includes a drive controller disposed in the second end cap and fixedly connected to the second end cap;

the driving controller is provided with a second through hole corresponding to the second boss, and the second boss penetrates through the second through hole.

In another aspect, the present application further provides a flying apparatus, including a horn, the power device as described above connected to the horn, and a first propeller and a second propeller connected to the power device, respectively.

The application provides a power device's stator module is including locating in the casing and the first winding stator and the second winding stator that the interval set up, the rotor subassembly include with the casing rotates the motor shaft of connecting, surrounds a plurality of first magnets of first winding stator, and surround a plurality of second magnets of second winding stator, the first screw of first end fixed connection of motor shaft, the second end fixed connection second screw of motor shaft. Through first winding stator and first magnet mutually supporting to and second winding stator and second magnet mutually support, drive the motor shaft jointly and rotate, make the motor shaft have sufficient power and can drive two screw rotations, thereby improve power device's power-to-weight ratio.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic illustration of a horn of a prior art flying apparatus;

FIG. 2 is a front exploded view of a power plant provided by an embodiment of the present application;

FIG. 3 is a reverse exploded view of a power plant provided by an embodiment of the present application;

FIG. 4 is a cross-sectional view of a power plant provided by an embodiment of the present application;

fig. 5 is a schematic view of a stator assembly and a support frame of a power device provided in an embodiment of the present application;

fig. 6 is an exploded view of a stator assembly and a support frame of the power device according to the embodiment of the present disclosure;

FIG. 7 is a schematic view of a motor shaft of the power plant provided by the embodiments of the present application;

FIG. 8 is a schematic view of a second end cover of a power plant provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of a drive control for a power plant provided by an embodiment of the present application;

FIG. 10 is a schematic view of a horn of a flight device provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The utility model provides an among the power device can be applied to flight equipment, in order to drive flight equipment's screw (can be the screw that is used for VTOL, also can be the screw that is used for horizontal flight), install a power device on flight equipment's an horn promptly, two screws of power device fixed connection, it is rotatory to drive two screws simultaneously, compare in prior art, the power device power-to-weight ratio of this application, on the basis that improves flight equipment power, can also alleviate flight equipment's whole weight, and then improve flight equipment's the volume of loading.

Referring to fig. 2 to 4, in an embodiment of the present application, a power device is provided for a flight apparatus to drive a propeller of the flight apparatus, including: a casing 10, a stator assembly 20 and a rotor assembly 30;

the stator assembly 20 includes a first winding stator 21 and a second winding stator 22 disposed in the casing 10 at intervals;

the rotor assembly 30 includes a motor shaft 31 rotatably connected to the housing 10, a plurality of first magnets 32 surrounding the first winding stator 21, and a plurality of second magnets 33 surrounding the second winding stator 22;

the first end of motor shaft 31 is fixed connection first screw, the second end fixed connection second screw of motor shaft 31.

It should be noted that the stator assembly 20 of the power device includes a first winding stator 21 and a second winding stator 22 disposed in the casing 10 at an interval, the rotor assembly 30 includes a motor shaft 31 rotatably connected to the casing 10, a plurality of first magnets 32 surrounding the first winding stator 21, and a plurality of second magnets 33 surrounding the second winding stator 22 (i.e., the first winding stator 21 and the first magnets 32 are located on the same horizontal plane, and the second winding stator 22 and the second magnets 33 are located on the same horizontal plane), a first end of the motor shaft 31 is fixedly connected to a first propeller, and a second end of the motor shaft 31 is fixedly connected to a second propeller. The motor shaft 31 is driven to rotate together by the mutual matching of the first winding stator 21 and the first magnet 32 and the mutual matching of the second winding stator 22 and the second magnet 33 (that is, the power device of the present application adopts a structure arrangement of double stators and one rotor, that is, the first winding stator 21 generates a rotating magnetic field after being electrified, the magnetic fields generated by the plurality of first magnets 32 and the rotating magnetic field interact to form electromagnetic torque to rotate the motor shaft 31, the second winding stator 22 also generates a rotating magnetic field after being electrified, the magnetic fields generated by the plurality of second magnets 33 and the rotating magnetic field interact to form electromagnetic torque to rotate the motor shaft 31), so that the motor shaft 31 has enough power to drive the two propellers to rotate, thereby improving the power-to-weight ratio of the power device, and reducing the overall weight of the flight device on the basis of improving the power of the flight device, thereby improving the cargo capacity of the flight equipment.

In addition, compare in prior art through the mode that two power device drive two propellers on flight equipment, this application only needs a power device to install and can drive two propellers in flight equipment to simplify power device's installation step and installation degree of difficulty, but also can make the interval between two propellers closer, save more spaces for flight equipment. In addition, the prior art can also adopt the mode that a bulky power device drives a bulky screw to improve power-to-weight ratio of power device, however because power device is too big, can lead to the interval of two adjacent horn of flight equipment to increase to reduce the structural strength of horn, and the power device of this application does not increase the volume, and two screws are driven by a motor shaft 31, can reduce the interval of two adjacent horn of flight equipment, thereby improve the structural strength of horn.

Further, the first magnet 32 and the second magnet 33 may be both magnets or other magnetic objects, and the material of the magnets may be ferrite, alnico, ndfeb, or samarium cobalt, or may be other materials, which is not limited herein.

In some embodiments, referring to fig. 2 to 6, the housing 10 includes a supporting frame 11, and the supporting frame 11 has a first protrusion 111 thereon; the first winding stator 21 and the second winding stator 22 are both sleeved on the first protruding portion 111. The arrangement of the first protrusions 111 is advantageous in improving the connection stability of the first winding stator 21 and the second winding stator 22.

Further, the first winding stator 21 and the second winding stator 22 may be fixedly connected to the first protrusion 111 through glue, and may also be fixedly connected to the first protrusion 111 through other manners, which is not limited herein.

In some embodiments, referring to fig. 2 to 6, the stator assembly 20 further includes a first support frame 23 sleeved on the first boss 111 and located between the first winding stator 21 and the second winding stator 22. The upper surface and the lower surface of the first support frame 23 are respectively contacted with the first winding stator 21 and the second winding stator 22, and the first support frame 23 not only can play a supporting role, but also can prevent the first winding stator 21 and the second winding stator 22 from being contacted to cause abnormal work of the power device.

Further, the first support 23 may be fixedly connected to the first protrusion 111 through a glue, or may be fixedly connected to the first protrusion 111 through another method, which is not limited herein.

In some embodiments, referring to fig. 2 to 4, a first through hole (not shown) is formed in the first protrusion 111 and penetrates through the first protrusion 111; a first end of the motor shaft 31 passes through the first boss 111;

the rotor assembly 30 further comprises at least one bearing 34 located in the first through hole and sleeved on the motor shaft 31; the outer ring of the bearing 34 is fixedly connected with the first boss 111, and the inner ring of the bearing 34 is fixedly connected with the motor shaft 31, so that the motor shaft 31 is connected with the support frame 11 on the basis of not influencing the rotation of the motor shaft 31. In addition, the more the bearings 34, the less the vibration when the motor shaft 31 rotates, but the number of the bearings 34 also takes into consideration the size of the space of the first through hole, so the number of the bearings 36 can be selected according to practical needs, and the application is not limited herein.

Further, the outer ring of the bearing 34 may be fixedly connected to the first protrusion 111 through a rubber body, and of course, may also be fixedly connected to the first protrusion 111 through other manners, which is not limited herein.

In some embodiments, referring to fig. 2 to 4, the rotor assembly 30 further includes a first end cap 35 fixedly connected to the motor shaft 31, and a housing 36 fixedly connected to the first end cap 35;

the housing 36 surrounds the first winding stator 21 and the second winding stator 22;

the plurality of first magnets 32 and the plurality of second magnets 33 are each fixedly attached to the housing 36. The two stators are surrounded by the casing 36, and the first magnet 32 and the second magnet 33 are fixedly connected with the casing 36, so that the first winding stator 21 and the first magnet 32 are located on the same horizontal plane, and the second winding stator 22 and the second magnet 33 are located on the same horizontal plane. When the motor shaft 31 rotates, the first end cap 35, the housing 36, the first magnet 32, and the second magnet 33 also rotate together with the motor shaft 31. In addition, in order not to affect the rotation of the rotor assembly 30, the supporting frame 11 has a certain distance with the housing 36 except for the first protruding portion 111.

Further, the second end of the motor shaft 31 extends through the first end cover 35 to the outside of the first end cover 35; the shell 36 is fixedly connected with the edge of the first end cover 35, and can be connected in an interference fit and gluing manner or in a screw connection manner; the plurality of first magnets 32 and the plurality of second magnets 33 may be adhered to the case 36 by glue, and the upper surfaces of the plurality of first magnets 32 may also be adhered to the first end cap 33, improving the coupling stability of the first magnets 32.

In some embodiments, referring to fig. 2-3, the rotor assembly 30 further includes a second holder 37 fixedly coupled to the housing 36 and positioned between the first plurality of magnets 32 and the second plurality of magnets 33. The second holder 37 may serve as a support to improve the stability of the connection between the first magnet 32 and the second magnet 33.

In some embodiments, referring to fig. 2 to 4, the rotor assembly 30 further includes a locking portion 38 disposed outside the supporting frame 11 and fixedly connected to the motor shaft 31. The locking portion 38 can further stabilize the motor shaft 31, prevent the motor shaft 31 from moving axially during rotation, and improve the stability of the power device.

In some embodiments, referring to fig. 2, 3, 4 and 7, the motor shaft 31 is provided with a first groove 311 and a second groove 312 which are arranged at intervals, the locking portion 38 is fixed in the first groove 311, and the first propeller is fixed in the second groove 312. A locking screw (for example, a v-shaped or u-shaped screw) is provided inside the locking portion 38, and the locking screw of the locking portion 38 is fixed in the first groove 311 by the arrangement of the first groove 311, so that the connection stability of the locking portion 38 can be improved. The first propeller is a propeller located below the power device, and a part of the first propeller is fixed in the second groove 312 through the arrangement of the second groove 312, so that the connection stability of the first propeller can be improved.

In some embodiments, referring to fig. 2 to 4, the rotor assembly 30 further includes at least one spacer 39 located between the locking portion 38 and the supporting frame 11, and the spacer 39 is sleeved on the motor shaft 31. Can further stabilize motor shaft 31 through setting up gasket 39, prevent that motor shaft 31 from axial displacement appearing when rotating, can also reduce the vibrations of motor shaft 31 when rotating, improve power device's stability. In addition, the material of the gasket 39 may be metal or plastic, and the number of the gaskets 39 may also be specifically selected according to actual needs, for example, the number of the gaskets 39 may be two, where the material of one gasket 39 is plastic, and the material of the other gasket 39 is metal (e.g., copper), although the arrangement of the gasket 38 may also be in other cases, and the application is not limited herein.

In some embodiments, referring to fig. 2 to 4, the rotor assembly 30 further includes a snap ring 310 located between the spacer 39 and the locking portion 38, and the snap ring 310 is sleeved on the motor shaft 31. The both ends of the snap ring 310 are in close contact with the washer 39 and the locking part 38, respectively, and the motor shaft 31 can be further stabilized by the snap ring 310, preventing the motor shaft 31 from moving axially when rotating. In addition, in order to improve the stability of the snap ring 310, a receiving groove may be provided on the motor shaft 31, and a portion of the snap ring 310 is located in the receiving groove.

In some embodiments, referring to fig. 2, fig. 3, fig. 4 and fig. 8, the housing 10 further includes a second end cover 12 fixedly connected to the supporting frame 11, and the second end cover 12 has a second hollow protrusion 121; a first through hole penetrating through the first protruding part 111 is formed in the first protruding part 111; a first end of the motor shaft 31 extends to the outside of the housing 10 through the first and

second bosses

111 and 121. By providing the second protrusions 121 corresponding to the first protrusions 111 and the motor shaft 31, it is facilitated that the motor shaft 31 passes through the second cover 12. Further, in order not to affect the rotation of the motor shaft 31, there is a gap between the motor shaft 31 and the second boss 121.

Further, the second end cap 12 and the supporting frame 11 may be fixedly connected by screws, and of course, may also be fixedly connected by other methods, which is not limited herein.

In some embodiments, referring to fig. 2, 3, 4, 8 and 9, the power plant further comprises a drive controller 40 disposed in the second end cap 12 and fixedly connected to the second end cap 12;

the driving controller 40 has a second through hole 41 corresponding to the second protrusion 121, and the second protrusion 121 passes through the second through hole 41. The installation of the drive controller 40 is facilitated by the provision of the second through hole 41, and the penetration of the motor shaft 31 through the second end cover 12 is also facilitated.

Further, the second end cap 12 and the driving controller 40 may be fixedly connected by screws, and may be fixedly connected by other methods, which is not limited herein.

Further, the battery of the flight device may supply power to the first winding stator 21, the second winding stator 22 and the driving controller 40, and the driving controller 40 may also control the magnitude of the current applied to the first winding stator 21 and the second winding stator 22, so as to adjust the rotation speed of the motor shaft 31.

In some embodiments, referring to fig. 9, the driving controller 40 includes a printed circuit board 42 fixedly connected to the second end cap 12, the printed circuit board 42 is provided with a first three-phase winding terminal 43 and a second three-phase winding terminal 44, the three-phase winding of the first winding stator 21 is connected to the first three-phase winding terminal 43, and the three-phase winding of the second winding stator 22 is connected to the second three-phase winding terminal 44, so as to supply power to the first winding stator 21 and the second winding stator 22. In addition, a motor lead-out terminal 45 is provided on the printed circuit board 42, and the motor lead-out terminal 45 and a battery of the flight equipment are connected through a motor lead-out to supply power to the printed circuit board 42. In addition, other electronic components are disposed on the printed circuit board 42, and will not be further described here.

Referring to fig. 10, the present invention further provides a flying apparatus, which includes a horn 100, the power device 200 connected to the horn 100, and a first propeller 300 and a second propeller 400 connected to the power device 200, respectively. The power device 200 has high power-weight ratio, can simultaneously drive the first propeller 300 and the second propeller 400 to rotate, and can reduce the whole weight of the flight equipment on the basis of improving the power of the flight equipment, thereby improving the cargo capacity of the flight equipment.

In addition, the flight equipment further comprises a mounting seat 500 fixedly connected with the horn 100, the horn 100 and the mounting seat 500 can be fixedly connected by rivets or screws, the power device 200 and the mounting seat 500 can be fixedly connected, and the power device 200 and the mounting seat 500 can be fixedly connected by screws. As shown in fig. 1, in the prior art, two power devices 200 'are disposed on the horn 100', and two mounting seats 400 'are correspondingly disposed on the horn 100', compared to the prior art, the flight apparatus of the present application has a simpler structure, and the first propeller 300 and the second propeller 400 are closer to each other, so that more space can be saved for the flight apparatus.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and parts that are not described in detail in a certain embodiment may refer to the above detailed descriptions of other embodiments, and are not described herein again.

In a specific implementation, each component or structure may be implemented as an independent entity, or may be combined arbitrarily and implemented as one or several entities, and the specific implementation of each component or structure may refer to the foregoing embodiments, which are not described herein again.

The power device and the flight device provided by the embodiment of the present invention are described in detail above, and the principle and the implementation of the present invention are explained by applying specific examples herein, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the idea of the present invention, there may be some changes in the specific implementation and application scope, and to sum up, the content of the present specification should not be understood as a limitation to the present invention.

Claims

1. A power plant for use in a flying apparatus for driving a propeller of the flying apparatus, comprising: a housing, a stator assembly and a rotor assembly;

2. The power unit of claim 1, wherein said housing includes a support frame having a first boss thereon; the first winding stator and the second winding stator are sleeved on the first protruding portion.

3. The powerplant of claim 2, wherein the stator assembly further comprises a first support frame nested on the first lobe and positioned between the first winding stator and the second winding stator.

4. The power unit according to claim 2, wherein a first through hole is provided in the first boss portion to penetrate the first boss portion; the first end of the motor shaft penetrates through the first bulge;

5. The powerplant of claim 1, wherein the rotor assembly further comprises a first end cap fixedly connected to the motor shaft, a housing fixedly connected to the first end cap;

the housing encloses the first winding stator and the second winding stator;

6. The powerplant of claim 5, wherein the rotor assembly further comprises a second support frame fixedly attached to the housing and positioned between the first plurality of magnets and the second plurality of magnets.

7. The power unit of claim 2, wherein said rotor assembly further comprises a locking portion disposed outside said cage and fixedly coupled to said motor shaft.

8. The power unit as claimed in claim 7, wherein said motor shaft is provided with a first recess and a second recess which are spaced apart from each other, said locking portion is fixed in said first recess, and said first propeller is fixed in said second recess.

9. The motor of claim 7 wherein said rotor assembly further comprises at least one spacer between said locking portion and said support bracket, said spacer being nested on said motor shaft.

10. The motor of claim 9 wherein said rotor assembly further comprises a snap ring between said spacer and said locking portion, said snap ring being fitted over said motor shaft.

11. The power unit of claim 2, wherein said housing further comprises a second end cap fixedly attached to said support frame, said second end cap having a second hollow boss; a first through hole penetrating through the first protruding part is formed in the first protruding part; the first end of the motor shaft extends to the outside of the housing through the first boss and the second boss.

12. The powerplant of claim 11, and further comprising a drive controller disposed in and fixedly connected to said second end cap;

13. A flying apparatus comprising a horn, a power plant as claimed in any one of claims 1 to 12 connected to the horn, and first and second propellers connected to the power plant respectively.