CN205583969U

CN205583969U - Brushless motor of outer rotors

Info

Publication number: CN205583969U
Application number: CN201620353916.XU
Authority: CN
Inventors: 李吉祥
Original assignee: SHENZHEN KEWEITAI ENTERPRISE DEVELOPMENT Co Ltd
Current assignee: SHENZHEN KEWEITAI ENTERPRISE DEVELOPMENT Co Ltd
Priority date: 2016-04-25
Filing date: 2016-04-25
Publication date: 2016-09-14
Anticipated expiration: 2026-04-25

Abstract

The utility model discloses a brushless motor of outer rotors, including motor housing and the rotor skeleton of fixed mounting in motor housing, install the pivot in the rotor skeleton, the stator is installed in the outside of pivot, the outside fixed mounting of stator has stator core, stator core's outside winding has the armature coil, and installs the magnetic ring between stator core and the motor casing. The utility model discloses under the condition that does not increase motor external diameter, magnet steel number of poles and rotor yoke weight, through improving the motor structure, set up the magnetic ring between stator core and motor casing. Compared with the prior art, the utility model discloses need not to increase motor external diameter and magnetic ring number of poles, reduced assembly and inspection working 's the degree of difficulty to the performance of motor has effectively been improved, thereby the time of endurance and the overall structure's of aircraft reliability has been guaranteed.

Description

A kind of outer rotor brushless motor

Technical field:

This utility model belongs to motor, particularly relates to a kind of outer rotor brushless motor.

Background technology:

Outer rotor brushless motor uses multipole magnet steel to combine at present, along with model plane, unmanned plane, robot, Line load requirement is improved constantly by the products such as The Cloud Terrace, power and the moment of torsion to outer rotor brushless motor Also requiring that increasing, the external diameter increasing outer rotor brushless motor is to increase having of power of motor and moment of torsion Effect approach, along with the increase of outer rotor brushless motor external diameter, the most proportional increase of number of poles of magnet steel, right Assembling, Inspection adds difficulty, and additionally the raising of motor external diameter also causes rotor rim weight Increasing, to model plane, the aircraft such as unmanned plane adversely affects cruising time.

Summary of the invention:

To this end, the purpose of this utility model is to provide one can reduce motor speed, improve motor The outer rotor brushless motor of energy.

For achieving the above object, this utility model mainly adopts the following technical scheme that

A kind of outer rotor brushless motor, including motor housing and the rotor being fixedly mounted in motor housing Skeleton, is provided with rotating shaft in described rotor framework, the inner side of described rotating shaft is provided with stator, described fixed The outside of son is installed with stator core, and the outer felt of described stator core is wound with an armature coil, And magnet ring is installed between stator core and electric machine casing.

Preferably, described motor magnet ring is arranged in the rotor of motor housing.

Preferably, described magnet ring be shoe cylinder, square cylinder, circular cylinder, triangle cylinder or Trapezoid cylinder.

Preferably, the wire being connected with described armature coil is also included.

Preferably, described magnet ring is cylindrical, and this magnet ring is by the different unit magnetic of two groups of magnetizing directions Block combines the most alternately arranged composition according to Halbach array.

Preferably, described often group unit magnetic piece includes that the group inside pointing to is concentrated in three kinds of magnetizing direction N poles Close and three kinds of magnetizing direction N poles disperse outwardly directed combination.

Preferably, described often group unit magnetic piece include magnetizing direction be N pole point to inside, N pole point to Inside outside, N the most tiltedly point to and the most outwardly directed combination of N.

This utility model in the case of not increasing motor external diameter, magnet steel number of poles and rotor rim weight, By improve electric machine structure, in the outside of stator core around be equipped with armature coil and stator core with Magnet ring is set between electric machine casing.Compared with prior art, this utility model is without increasing motor external diameter With magnet ring number of poles, reduce the difficulty of assembling and Inspection, thus be effectively increased the performance of motor； Thus ensure that the cruising time of aircraft and integrally-built reliability.

Accompanying drawing illustrates:

Fig. 1 is the front view of this utility model outer rotor brushless motor；

Fig. 2 is the side view of this utility model outer rotor brushless motor；

Fig. 3 is the sectional view of Fig. 2.

Identifier declaration in figure: motor housing 1, magnet ring 2, rotor framework 3, rotating shaft 4, stator core 5, Armature coil 6, wire 7, bearing 8, jump ring 9, stator 10.

Detailed description of the invention:

For illustrating thought of the present utility model and purpose, below in conjunction with the drawings and specific embodiments to this Utility model is described further.

Referring to shown in Fig. 1, Fig. 2, Fig. 3, Fig. 1 is the master of this utility model outer rotor brushless motor View；Fig. 2 is the side view of this utility model outer rotor brushless motor；Fig. 3 is the sectional view of Fig. 2. Present embodiments provide a kind of outer rotor brushless motor.

Outer rotor brushless motor described in the utility model includes motor housing 1, described motor housing 1 In rotor framework 3 is installed, described rotor framework 3 is provided with rotating shaft 4；The two ends of described rotating shaft 4 Correspondence is arranged in bearing 8, and wherein one end of rotating shaft 4 is also equipped with jump ring 9.

The outside of rotating shaft 4 is provided with stator 10, and the outside of described stator 10 is installed with stator core 5, the outer felt of described stator core 5 is wound with an armature coil 6, described armature coil 6 and wire 7 Connect, and magnet ring 2 is installed between stator core 5 and electric machine casing 1.The present embodiment middle magnetic ring 2 can Think shoe cylinder, square cylinder, circular cylinder, triangle cylinder or trapezoid cylinder.

In addition, it is necessary to explanation be the magnet ring in the present embodiment be the unit different by two groups of magnetizing directions Magnetic piece combines the most alternately arranged composition according to Halbach array.

In certain embodiments, often group unit magnetic piece includes that three kinds of magnetizing direction N poles are concentrated inside sensing Combination and the outwardly directed combination of three kinds of magnetizing direction N poles dispersion.

In further embodiments, often group unit magnetic piece include magnetizing direction be N pole point to inside, N Inside the most outwardly directed, N the most tiltedly points to and the most outwardly directed combination of N.

It is above a kind of outer rotor brushless motor provided by the utility model has been carried out detailed Jie Continuing, structural principle of the present utility model and embodiment are explained by specific case used herein Stating, above example is only intended to help to understand method of the present utility model and core concept thereof；Meanwhile, For one of ordinary skill in the art, according to thought of the present utility model, in detailed description of the invention and All will change in range of application, in sum, this specification content should not be construed as this reality With novel restriction.

Claims

1. an outer rotor brushless motor, it is characterised in that include motor housing and be fixedly mounted on Rotor framework in motor housing, is provided with rotating shaft, the outside of described rotating shaft in described rotor framework Being provided with stator, the outside of described stator is installed with stator core, outside described stator core Side is wound with between armature coil, and stator core and electric machine casing and is provided with magnet ring.

2. outer rotor brushless motor as claimed in claim 1, it is characterised in that described motor magnetic Ring is arranged in the rotor of motor housing.

3. outer rotor brushless motor as claimed in claim 1, it is characterised in that described magnet ring is Shoe cylinder, square cylinder, circular cylinder, triangle cylinder or trapezoid cylinder.

4. outer rotor brushless motor as claimed in claim 3, it is characterised in that described magnet ring is Cylinder, and this magnet ring by the different unit magnetic piece of two groups of magnetizing directions according to Halbach array group Close the most alternately arranged composition.

5. outer rotor brushless motor as claimed in claim 4, it is characterised in that described often organize list Unit's magnetic piece includes that the combination inside pointing to and three kinds of magnetizing direction N are concentrated in three kinds of magnetizing direction N poles The combination that pole dispersion is outwardly directed.

6. drag cup brushless electric machine as claimed in claim 5, it is characterised in that described often organize list Unit's magnetic piece includes that magnetizing direction is inside N pole is pointed to, N is the most outwardly directed, N the most tiltedly points to inner side And the combination that N is the most outwardly directed.