CN218868005U

CN218868005U - Brushless motor

Info

Publication number: CN218868005U
Application number: CN202122167963.9U
Authority: CN
Inventors: 郭鹏; 刘春建; 亢汉宁; 林李健; 叶国亮; 余勋灿
Original assignee: Huizhou Longde Technology Co ltd
Current assignee: Huizhou Longde Technology Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2023-04-14
Anticipated expiration: 2031-09-08

Abstract

The application discloses a brushless motor, and relates to the technical field of motors; the motor comprises a shell group, a stator group and a rotating shaft group, wherein an accommodating space is formed in the shell group; the outer shell group comprises a top cover, a middle shell and a base; the top cover, the rotating shaft group and the middle shell are fixedly connected, and the base is fixedly connected with the stator group; a plurality of first through holes are formed in the end face and the side wall of the base; a plurality of second through holes are formed in the side wall of the top cover; adopt the technical scheme that this application provided to solve one of the relatively poor, great technical problem of weight of current unmanned aerial vehicle's brushless motor heat dispersion.

Description

Brushless motor

Technical Field

The application relates to the technical field of motors, in particular to a brushless motor.

Background

The pilotless airplane is an unmanned airplane which is operated by utilizing a radio remote control device and a self-contained program control device, or is completely or intermittently and autonomously operated by an on-board computer; due to the operation of high strength and the requirement on flight endurance, a motor used by the unmanned aerial vehicle also has certain requirements, and if the motor needs to have strong heat dissipation performance, the operation of high strength is ensured; in addition, in order to realize the unmanned aerial vehicle lightweight as much as possible, there is a certain requirement for the weight of the motor.

SUMMERY OF THE UTILITY MODEL

This application aim at provides a brushless motor, adopts the technical scheme that this application provided to solve current unmanned aerial vehicle's brushless motor heat dispersion one of the technical problem relatively poor, that weight is great.

In order to solve one of the above technical problems, the present application provides a brushless motor, including a housing set formed with an accommodation space, a stator set and a rotating shaft set arranged in the accommodation space;

the outer shell group comprises a top cover, a middle shell and a base; the top cover, the rotating shaft group and the middle shell are fixedly connected, and the base is fixedly connected with the stator group;

a plurality of first through holes are formed in the end face and the side wall of the base;

a plurality of second through holes are formed in the side wall of the top cover;

in the implementation process, in the operation process of the brushless motor, external air flow can realize air circulation through the first through hole in the base and the second through hole in the top cover, so that heat generated by the stator group is taken away in the flow process, the heat dissipation performance of the motor is improved, and the stability of the motor in the high-strength operation process is ensured; in addition, the first through hole and the second through hole are respectively arranged on the base and the top cover, so that the air flows more smoothly, and the heat dissipation efficiency can be further improved.

Preferably, the rotating shaft group comprises a middle shaft, and the middle shaft is of a hollow structure;

at above-mentioned realization in-process, the axis is hollow structure, so can alleviate the weight of rotor to the whole weight of effective control motor, especially in unmanned aerial vehicle application, motor weight can direct influence unmanned aerial vehicle's performance and duration.

Preferably, the bottom bracket comprises a shaft body part and a platform part connected to one end of the shaft body part;

a first mounting hole is formed in the platform part around the circumference of the platform part;

preferably, second mounting holes are formed in the platform part around the circumferential direction of the platform part, and the second mounting holes and the first mounting holes are arranged at intervals;

be equipped with on the top cap cover establish with fixing base on the platform portion set up on the fixing base with the third mounting hole that the second mounting hole corresponds to wear to establish fixedly through the set screw the second mounting hole with the third mounting hole.

In the implementation process, the first mounting inner hole can be locked and attached through a fixing screw, and the second mounting hole and the third mounting hole can be further locked and attached through the fixing screw; the structure is convenient to assemble, and the relative slipping phenomenon is effectively avoided.

Preferably, the rotating shaft group further comprises a shaft cover arranged at one end of the middle shaft far away from the platform part, and an elastic gasket is arranged between the shaft cover and the middle shaft;

in the implementation process, the gasket can play a role in buffering, so that the abrasion of parts is effectively reduced, and the service life is prolonged.

Preferably, at least one group of ball bearings is arranged between the stator group and the middle shaft;

compared with the prior art, the beneficial effect of this application lies in: the application provides a brushless motor can effectively promote the heat dispersion of motor to can realize its stability in the high strength operation, the whole weight of motor obtains the lightweight simultaneously, can be applied to fields that unmanned aerial vehicle etc. have a higher demand for motor weight.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic diagram of the overall structure of one embodiment of the present application;

FIG. 2 is a schematic diagram of the overall structure of one embodiment of the present application;

FIG. 3 is a schematic end view of an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of the structure of FIG. 3;

FIG. 5 is a schematic structural view of a bottom bracket axle according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a portion of one embodiment of the present application;

wherein: 10. a housing set; 11. a top cover; 111. a second through hole; 12. a middle shell; 13. a base; 131. a first through hole; 20. a stator group; 30. a rotating shaft group; 31. a middle shaft; 311. a shaft portion; 312. a platform part; 3121. a first mounting hole; 3122. a second mounting hole; 3123. a third mounting hole; 32. a shaft cover; 321. an elastic washer; 40. a fixed seat; 41. a fixing screw; 50. ball bearings.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the application. That is, in some embodiments of the present application, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings for the sake of simplicity.

It should be noted that all directional indicators in the embodiments of the present application, such as upper, lower, left, right, front and rear \8230; \8230, are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in this application are for descriptive purposes only, not specifically referring to the order or sequence, nor are they intended to limit the application, but merely to distinguish components or operations described in the same technical terms, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

For a further understanding of the contents, features and functions of the present invention, reference will now be made to the following examples, which are illustrated in the accompanying drawings and described in the following detailed description:

examples

The pilotless plane is called unmanned plane for short, and is a pilotless plane operated by a radio remote control device and a self-contained program control device, or is completely or intermittently and autonomously operated by a vehicle-mounted computer; due to the operation of high strength and the requirement on flight endurance, a motor used by the unmanned aerial vehicle also has certain requirements, and if the motor needs to have strong heat dissipation performance, the operation of high strength is ensured; in addition, in order to realize the light weight of the unmanned aerial vehicle as much as possible, certain requirements also exist on the weight of the motor;

in order to solve the above technical problem, the present embodiment provides the following technical solutions:

specifically, referring to fig. 1 to 6, the present embodiment provides a brushless motor, which includes a housing group 10 formed with an accommodating space, a stator group 20 and a rotating shaft group 30 disposed in the accommodating space;

specifically, the housing assembly 10 includes a top cover 11, a middle housing 12 and a base 13; the top cover 11, the rotating shaft group 30 and the middle shell 12 are fixedly connected, and the base 13 is fixedly connected with the stator group 20;

furthermore, a plurality of first through holes 131 are formed on the end surface and the side wall of the base 13;

furthermore, a plurality of second through holes 111 are formed in the side wall of the top cover 11;

in the above scheme, in the operation process of the brushless motor provided by the present application, external air flow can realize air circulation through the first through hole 131 on the base 13 and the second through hole 111 on the top cover 11, so as to take away heat generated by the stator group 20 in the flow process, thereby improving heat dissipation performance of the motor, and ensuring stability of the motor in the high-strength operation process; in addition, the first through hole 131 and the second through hole 111 are respectively disposed on the base 13 and the top cover 11, so that the air flows more smoothly, and the heat dissipation efficiency can be further improved;

when the rotating shaft set 30 rotates, the top cover 11 and the middle shell 12 are driven to rotate at the same time, so that the middle shell 12 and the base 13 form relative movement.

The stator assembly 20 belongs to a mature technology in the prior art, and therefore, the detailed structure thereof is not described in detail herein.

Specifically, the rotating shaft group 30 includes a middle shaft 31, and the middle shaft 31 is a hollow structure;

in the above scheme, the middle shaft 31 is of a hollow structure, so that the weight of the rotor can be reduced, the overall weight of the motor can be effectively controlled, and particularly in the application field of the unmanned aerial vehicle, the weight of the motor can directly influence the service performance and the endurance time of the unmanned aerial vehicle;

the first through hole 131 and the second through hole 111 are disposed to reduce the weight of the housing assembly 10 to some extent, so as to reduce the weight of the whole motor, and further embody the advantage of lightweight brushless motor provided by the present application.

Specifically, referring to fig. 5, the bottom bracket 31 includes a shaft portion 311 and a platform portion 312 connected to one end of the shaft portion 311;

a first mounting hole 3121 is formed on the platform part 312 around the circumference of the platform part 312;

further, second mounting holes 3122 are formed in the platform portion 312 around the circumferential direction thereof, and the second mounting holes 3122 are disposed at intervals from the first mounting holes 3121;

further, a fixed seat 40 covering the platform part 312 is arranged on the top cover, a third mounting hole 3123 corresponding to the second mounting hole 3122 is arranged on the fixed seat 40, and the second mounting hole 3122 and the third mounting hole 3123 are fixedly penetrated through by a fixing screw 41;

in the above solution, the first mounting inner hole can be locked by the fixing screw 41, and the second mounting hole 3122 and the third mounting hole 3123 can be further locked by the fixing screw 41; the structure is convenient to assemble, and the relative slipping phenomenon is effectively avoided.

Specifically, the rotating shaft group 30 further includes a shaft cover 32 disposed at one end of the central shaft 31 far away from the platform portion 312, and an elastic washer 321 is disposed between the shaft cover 32 and the central shaft 31; the packing ring can play the cushioning effect to effectively slow down accessories wearing and tearing, increase of service life.

Furthermore, in the above scheme, this application has set up the shaft cap 32, spring washer 321 and fixing base 40 respectively in the pivot group 30 axial, and shaft cap 32 and fixing base 40 attach through the fixed screw lock, adopt this mode can effectual elimination rotor part and stator part between the ascending clearance in the axial to can reduce its axial rocking in the operation process, promote the stability of motor operation in-process.

Specifically, referring to fig. 4, at least one set of ball bearings 50 is disposed between the stator set 20 and the middle shaft 31.

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

The above description is only for the preferred embodiment of the present application, and is not intended to limit the present application in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present application are included in the scope of the present application.

Claims

1. A brushless motor characterized by: the stator assembly comprises a shell assembly, a stator assembly and a rotating shaft assembly, wherein an accommodating space is formed in the shell assembly;

the shell group comprises a top cover, a middle shell and a base; the top cover, the rotating shaft group and the middle shell are fixedly connected, and the base is fixedly connected with the stator group;

and a plurality of second through holes are formed in the side wall of the top cover.

2. The brushless electric machine according to claim 1, wherein: the rotating shaft group comprises a middle shaft, and the middle shaft is of a hollow structure.

3. The brushless electric machine of claim 2, wherein: the middle shaft comprises a shaft body part and a platform part connected to one end of the shaft body part;

a first mounting hole is formed in the platform portion around the circumference of the platform portion.

4. The brushless electric machine of claim 3, wherein: second mounting holes are formed in the platform part around the circumference of the platform part, and the second mounting holes and the first mounting holes are arranged at intervals;

5. The brushless electric machine of claim 3, wherein: the rotating shaft group further comprises a shaft cover arranged at one end, far away from the platform part, of the middle shaft, and an elastic gasket is arranged between the shaft cover and the middle shaft.

6. The brushless electric machine according to any of claims 2-5, wherein: at least one group of ball bearings is arranged between the stator group and the middle shaft.