CN210183201U

CN210183201U - Brushless motor

Info

Publication number: CN210183201U
Application number: CN201921138401.8U
Authority: CN
Inventors: Jun He; 贺军; Jiaqi Fang; 房佳琦; Changzheng Qu; 曲长征; Peng Yang; 杨鹏; Qiuhao Zhang; 张秋豪; Cansong Xiong; 熊灿松; Xing Xu; 许兴
Original assignee: Zhuhai Sunny Aerospace Technology Co Ltd
Current assignee: Zhuhai Sunny Aerospace Technology Co Ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-03-24
Anticipated expiration: 2029-07-18

Abstract

The utility model discloses a brushless motor, including stator module, pivot subassembly and rotor subassembly. The stator assembly comprises a base and a cylinder seat arranged on the base, at least two stators sequentially arranged along the axial direction of the cylinder seat are arranged on the outer wall of the cylinder seat, the stators are arranged at intervals, and the stators work independently; the rotating shaft assembly comprises a rotating shaft which is arranged in the cylinder seat in a penetrating way; the rotor assembly comprises a motor shell and magnetic poles arranged in the inner wall of the motor shell, the magnetic poles are arranged on the outer side of the stator at intervals, and the motor shell is connected with the rotating shaft through a connecting piece. The stator in the motor acts on the magnetic pole together to drive the rotor component to rotate. Because the stators work independently, the sum of the power generated by the stators is the output power of the motor, the current of a single stator is greatly reduced, the quality of a motor controller and the motor is further greatly reduced, the heat productivity of the stators is reduced, and the overload capacity of the motor is improved.

Description

Brushless motor

Technical Field

The utility model belongs to the technical field of the aircraft power technique and specifically relates to a brushless motor is related to.

Background

A brushless motor, also called a brushless dc motor, is a traditional electromechanical integrated product. The weight and size of the motor and the motor controller of the traditional brushless motor are increased along with the increase of power and torque, so that the thrust-weight ratio of the motor is reduced, wherein the thrust-weight ratio refers to the ratio of the thrust of an aircraft engine to the gravity of the engine or the gravity of the aircraft, and the thrust is generated by the aircraft engine or the unit gravity of the aircraft. If the traditional motor is arranged on the aircraft, the structural weight burden of the aircraft is increased, and too much internal space of the aircraft is occupied, so that the thrust-weight ratio, the load weight and the maneuvering capability of the whole aircraft are reduced.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a brushless motor, it adopts two stator structures, the quality of greatly reduced machine controller and motor, reduction stator calorific capacity improve the overload capacity of motor.

The utility model discloses a solve the technical scheme that its technical problem adopted and be:

a brushless motor comprises a stator assembly, a stator assembly and a motor, wherein the stator assembly comprises a base and a cylinder seat arranged on the base, at least two stators which are sequentially arranged along the axial direction of the cylinder seat are arranged on the outer wall of the cylinder seat, the stators are arranged at intervals, and the stators work independently; the rotating shaft assembly comprises a rotating shaft which is arranged in the cylinder seat in a penetrating way; the rotor assembly comprises a motor shell and magnetic poles arranged in the inner wall of the motor shell, the magnetic poles are arranged on the outer side of the stator at intervals, and the motor shell is connected with the rotating shaft through a connecting piece.

As a further improvement of the scheme, two stators are arranged on the outer wall of the cylindrical seat.

As a further improvement of the scheme, the motor controller is further provided, the number of the motor controllers is the same as that of the stators, each stator is connected with one motor controller through a power line, and the directions of the output torques of the stators are all in the same direction. The motor controller is an integrated circuit which controls the motor to work according to set direction, speed, angle and response time, and each stator is independently connected with one motor controller. During operation, the two motor controllers respectively control the two stators to work, and the two stators jointly act on the magnetic poles to drive the rotor assembly to rotate. Because the two stators and the motor controller work independently, the generated power is 1/2 of the output power of the motor, the current of a single stator is 1/2 of the total current of the motor, the quality of the motor controller and the motor is greatly reduced, the heat productivity of the stators is reduced, and the overload capacity of the motor is improved.

As a further improvement of the above solution, the rotating shaft assembly comprises at least two bearings fastened in the cylindrical seat, the rotating shaft being rotatably arranged on the bearings.

As a further improvement of the above scheme, the rotating shaft assembly comprises a clamping groove circumferentially arranged along the outer side of the rotating shaft, a clamping spring is mounted on the clamping groove, and the clamping spring and the bearing are mutually abutted. The clamp spring prevents the rotating shaft from sliding upwards, and axial positioning of the rotating shaft is achieved.

As a further improvement of the scheme, the connecting piece is a paddle seat.

As a further improvement of the scheme, the motor shell is fixedly connected with the connecting piece through a countersunk head screw.

As a further improvement of the scheme, the upper end of the rotating shaft is provided with a rotating shaft mounting seat, and the rotating shaft mounting seat and the connecting piece are fixedly connected through a sunk screw.

As a further improvement of the above aspect, the magnetic pole is cylindrical.

The utility model has the advantages that: the stator in the motor acts on the magnetic pole together to drive the rotor component to rotate. Because the stators work independently, the sum of the power generated by the stators is the output power of the motor, the current of a single stator is greatly reduced, the quality of a motor controller and the motor is further greatly reduced, the heat productivity of the stators is reduced, and the overload capacity of the motor is improved.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the invention, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic structural view of a stator assembly according to a preferred embodiment of the present invention;

fig. 5 is a schematic structural diagram of the rotating shaft, the rotating shaft mounting seat and the snap spring according to the preferred embodiment of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention.

Referring to fig. 1, 2, 4 and 5, a brushless motor according to a preferred embodiment of the present invention includes a stator assembly 100, a rotating shaft assembly 200 and a rotor assembly 300.

Referring to fig. 2 and 4, the stator assembly 100 includes a base 110 and a cylindrical seat 120 disposed on the base 110, at least two stators 130 sequentially arranged along an axial direction of the cylindrical seat 120 are disposed on an outer wall of the cylindrical seat 120, the stators 130 are spaced apart from each other, and the stators 130 work independently. It should be noted that the "independent operation" designators 130 herein are independently operated, and are respectively connected to a motor controller and the like.

Referring to fig. 2 and 5, the rotary shaft assembly 200 includes a rotary shaft 210 inserted into the cylinder holder 120. The rotation shaft 210 is inserted into the cylindrical base 120 and provides a rotation center for the rotation of the rotor assembly 300.

Referring to fig. 2, the rotor assembly 300 includes a motor housing 310 and poles 320 disposed in an inner wall of the motor housing 310, the poles 320 being spaced outside the stator 130, the motor housing 310 being coupled to the rotation shaft 210 by a coupling member 330.

In operation, the stator 130 cooperates with the magnetic poles 320 to rotate the rotor assembly 300. Because the stators 130 work independently, and the sum of the power generated by the stators 130 is the output power of the motor, the current of a single stator 130 is greatly reduced, thereby greatly reducing the quality of a motor controller and the motor, reducing the heat productivity of the stators 130 and improving the overload capacity of the motor.

It is understood that the number of the stators may be plural, and is not limited to two provided in the embodiment and shown in the drawings.

The motor also comprises motor controllers, the number of the motor controllers is the same as that of the stators 130, each stator 130 is connected with one motor controller through a power line, and the directions of the output torques of the stators 130 are in the same direction. The motor controller is an integrated circuit that controls the motor to operate according to a set direction, speed, angle, and response time, and each stator 130 is individually connected to one motor controller.

Referring to fig. 2 and 4, two stators 130 are provided on the outer wall of the cylindrical holder 120. Meanwhile, two motor controllers are provided, and the two motor controllers and the two stators 130 correspond to each other two by two and are connected to each other.

During operation, the two motor controllers respectively control the two stators 130 to operate, and the two stators 130 act together on the magnetic poles 320 to drive the rotor assembly 300 to rotate. Because the two stators 130 and the motor controller work independently, the generated power is 1/2 of the output power of the motor, the current of the single stator 130 is 1/2 of the total current of the motor, thereby greatly reducing the quality of the motor controller and the motor, reducing the heat productivity of the stator 130 and improving the overload capacity of the motor.

In this embodiment, the motor housing 310 and the magnetic pole 320 are both cylindrical. The magnetic poles 320 are tightly attached to the inner wall of the motor housing 310, and the magnetic poles 320 are spaced outside the stator 130.

Referring to fig. 2, the rotary shaft assembly 200 includes at least two bearings 220 fastened in the cylinder housing 120, and the rotary shaft 210 is rotatably provided on the bearings 220.

Meanwhile, referring to fig. 3, the rotating shaft assembly 200 includes a clamping groove 400 circumferentially disposed along an outer side of the rotating shaft 210, a clamping spring 500 is mounted on the clamping groove 400, and the clamping spring 500 and the bearing 220 are abutted against each other. The snap spring 500 prevents the rotating shaft 210 from sliding upwards, so that the rotating shaft 210 is axially positioned.

Referring to fig. 1 and 2, the connection member 330 is a paddle socket. Since the present motor can be used to drive an aircraft propeller, the connector 330 is a paddle mount to facilitate mating with an aircraft.

Further, the motor housing 310 and the connecting member 330 are tightly connected by a countersunk head screw. Namely, the motor housing 310 is fastened and connected with the paddle base through a countersunk head screw. Referring to fig. 2 and 5, a rotating shaft mounting seat 230 is provided at an upper end of the rotating shaft 210, and the rotating shaft mounting seat 230 and the connecting member 330 are fastened and connected by a countersunk head screw. That is, the rotating shaft mounting seat 230 and the mortar seat are fastened and connected by a countersunk head screw.

In this embodiment, the motor housing 310 and the slurry seat, and the rotating shaft mounting seat 240 and the slurry seat are fastened by countersunk screws. Thus, the surface of the locking portion is free of fastener projections.

The above embodiments are further described in the above aspects of the present invention, but it should not be understood that the scope of the above subject matter of the present invention is limited to the above embodiments, and all the technologies realized based on the above aspects belong to the scope of the present invention.

Claims

1. A brushless motor characterized by: comprises that

The stator assembly (100) comprises a base (110) and a cylindrical seat (120) arranged on the base (110), wherein at least two stators (130) which are sequentially arranged along the axial direction of the cylindrical seat (120) are arranged on the outer wall of the cylindrical seat (120), the stators (130) are arranged at intervals, and the stators (130) independently work;

the rotating shaft assembly (200) comprises a rotating shaft (210) which is arranged in the cylindrical seat (120) in a penetrating way;

the rotor assembly (300) comprises a motor shell (310) and magnetic poles (320) arranged in the inner wall of the motor shell (310), wherein the magnetic poles (320) are arranged on the outer side of the stator (130) at intervals, and the motor shell (310) is connected with the rotating shaft (210) through a connecting piece (330).

2. A brushless electric machine according to claim 1, wherein: two stators (130) are arranged on the outer wall of the cylindrical seat (120).

3. A brushless electric machine according to claim 1 or 2, characterized in that: the motor controller is the same as the stators (130), each stator (130) is connected with one motor controller through a power line, and the directions of the output torques of the stators (130) are all in the same direction.

4. A brushless electric machine according to claim 1, wherein: the rotating shaft assembly (200) comprises at least two bearings (220) fastened in the cylinder seat (120), and the rotating shaft (210) is rotatably arranged on the bearings (220).

5. A brushless electric machine according to claim 4, wherein: the rotating shaft assembly (200) comprises a clamping groove (400) circumferentially arranged along the outer side of the rotating shaft (210), a clamping spring (500) is mounted on the clamping groove (400), and the clamping spring (500) and the bearing (220) are mutually abutted.

6. A brushless electric machine according to claim 1, wherein: the connecting piece (330) is a paddle seat.

7. A brushless electric machine according to claim 1 or 6, characterized in that: the motor shell (310) is fixedly connected with the connecting piece (330) through a countersunk head screw.

8. A brushless electric machine according to claim 1 or 6, characterized in that: the upper end of the rotating shaft (210) is provided with a rotating shaft mounting seat (230), and the rotating shaft mounting seat (230) is fixedly connected with the connecting piece (330) through a sunk screw.

9. A brushless electric machine according to claim 1, wherein: the magnetic pole (320) is cylindrical.