CN220291849U - Axial magnetic field motor - Google Patents

Abstract

The utility model provides an axial magnetic field motor, which comprises a motor shell and a motor shaft, wherein the rotating shaft is rotatably arranged in the motor shell; the stator assembly is fixedly arranged in the motor shell and comprises a first A-phase winding stator, a second A-phase winding stator, a first B-phase winding stator, a second B-phase winding stator, a first C-phase winding stator and a second C-phase winding stator; the rotor assembly is fixedly mounted on the motor shaft and comprises a first rotor, a second rotor and a third rotor, wherein the first rotor is arranged between the first A-phase winding stator and the second A-phase winding stator, the second rotor is arranged between the first B-phase winding stator and the second B-phase winding stator, and the third rotor is arranged between the first C-phase winding stator and the second C-phase winding stator. The axial magnetic field motor has higher overload capacity and high magnetic energy utilization rate.

Description

Axial magnetic field motor

Technical Field

The utility model relates to the technical field of motors, in particular to an axial magnetic field motor.

Background

The current axial magnetic field motor is widely applied in industry, however, with the development of technology, the performance requirement on the motor is higher, and aiming at the structural form of the current axial magnetic field motor, the overload capacity is low, the output torque is smaller, and the magnetic energy utilization rate is lower. Therefore, it is desirable to design a high torque, high overload capability drive motor.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide an axial field motor for solving the problems of low torque, low overload capacity and low magnetic energy utilization in the prior art.

To achieve the above and other related objects, the present utility model provides an axial field motor, including a motor housing, a motor shaft, and a rotating shaft rotatably disposed inside the motor housing; the stator assembly is fixedly arranged in the motor shell and at least comprises a first A-phase winding stator, a second A-phase winding stator, a first B-phase winding stator, a second B-phase winding stator, a first C-phase winding stator and a second C-phase winding stator; the rotor assembly is fixedly mounted on the motor shaft and at least comprises a first rotor, a second rotor and a third rotor, wherein the first rotor is arranged between the first A-phase winding stator and the second A-phase winding stator, the second rotor is arranged between the first B-phase winding stator and the second B-phase winding stator, the third rotor is arranged between the first C-phase winding stator and the second C-phase winding stator, and in the circumferential direction, the second rotor is deflected by a certain angle relative to the first rotor, and the third rotor is deflected by a certain angle relative to the second rotor.

Furthermore, a magnetic yoke is arranged on one side, far away from the first rotor, of the first A-phase winding stator and the second A-phase winding stator.

Further, a positioning protrusion is arranged on the inner wall of the motor shell, a positioning groove is arranged on the stator assembly, and the positioning protrusion is embedded in the positioning groove.

Further, the first rotor, the second rotor and the third rotor comprise a fixed disc and a magnetic steel rotor, wherein the fixed disc is fixedly arranged on the motor shaft, an external convex tooth is arranged on the fixed disc, an internal groove is formed in the magnetic steel rotor, and the internal groove on the magnetic steel rotor is matched with the external convex tooth on the fixed disc.

Further, the motor housing comprises a front through cover, a middle housing and a rear through cover, the front through cover, the middle housing and the rear through cover are detachably and fixedly connected, a first end of the motor shaft is rotatably arranged on the front through cover through a first bearing, and a second end of the motor shaft is rotatably arranged on the rear through cover through a second bearing.

Further, the first bearing and the second bearing are deep groove ball bearings.

Further, the middle housing includes a first segmented housing, a second segmented housing, and a third segmented housing.

Further, the front through cover is further provided with an oil seal, the rear through cover is further provided with an end cover, and the oil seal and the end cover are used for preventing external dust or debris impurities from entering the motor shell.

Further, an electrical connector is further arranged on the motor housing, and the electrical connector is used for being electrically connected with the stator assembly.

Further, an encoder magnetic steel is arranged at the tail end of the motor shaft, an encoder is further arranged at the rear end of the motor shell, and the encoder is used for detecting the rotating speed of the motor shaft.

As described above, the axial field motor of the present utility model has the following advantageous effects: in the axial magnetic field motor, the three-phase winding stators are split into three independent single-phase winding stators, and each single-phase winding stator is arranged in a pair, so that the number of turns of a winding conductor of each single-phase winding stator is more, higher current density can be further formed, the power density of the motor can be effectively improved under the condition of the same magnetic density, larger torque output can be further realized, and the overload capacity of the motor is improved. Meanwhile, the arrangement of the paired single-phase winding stators is adopted, namely, one single-phase winding stator is arranged on each side of the rotor, so that the magnetic energy of the rotor can be more fully utilized, and the power conversion of the motor can be further improved.

Drawings

Fig. 1 is a three-dimensional schematic diagram of an axial field motor according to the present utility model.

Fig. 2 shows a cross-sectional view of an axial field motor according to the present utility model.

Fig. 3 shows an exploded view of the axial field motor provided by the present utility model.

Fig. 4 is a schematic view showing a structure of the stator assembly and the rotor assembly according to the present utility model.

Fig. 5 shows an exploded view of a stator assembly and a rotor assembly provided by the present utility model.

Fig. 6 shows an exploded view of a first a-phase winding stator and a first rotor according to the present utility model.

Reference numerals illustrate:

10. front through cover of motor shell 11

12. First segment of middle housing 121

122. Second segment casing 123 third segment casing

13. Rear through cover 131 end cover

111. Oil seal 101 positioning protrusion

20. First bearing of motor shaft 201

202. Second bearing 30 stator assembly

31. First A-phase winding stator 32 and second A-phase winding stator

33. First B-phase winding stator 34 and second B-phase winding stator

35. First C-phase winding stator 36 and second C-phase winding stator

301. Magnet yoke 302 positioning groove

40. Rotor assembly 41 first rotor

42. Second rotor 43 third rotor

401. Fixed disk 402 magnetic steel rotor

4011. External teeth 4021 internal groove

50. First connecting bolt 60 second connecting bolt

71. Encoder magnet steel 72 encoder

81. Connecting wire 82 winding lead

83. Winding parallel 100 electric connector

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.

In the description of the present utility model, unless specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, integrally connected, mechanically coupled, electrically coupled, directly coupled, or coupled via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the present utility model as indicated by the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Please refer to fig. 1 to 6. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

The present utility model provides an axial magnetic field motor, as shown in fig. 1 to 3, which comprises a motor housing 10, a motor shaft 20, a stator assembly 30 and a rotor assembly 40, wherein the motor shaft 20 is rotatably arranged inside the motor housing 10, the stator assembly 30 is fixedly arranged inside the motor housing 10, and the stator assembly 30 at least comprises a first a-phase winding stator 31, a second a-phase winding stator 32, a first B-phase winding stator 33, a second B-phase winding stator 34, a first C-phase winding stator 35 and a second C-phase winding stator 36; the rotor assembly 40 is fixedly mounted on the motor shaft 20, and the rotor assembly 40 includes at least a first rotor 41, a second rotor 42, and a third rotor 43, specifically, the first rotor 41 is disposed between the first a-phase winding stator 31 and the second a-phase winding stator 32, the second rotor 42 is disposed between the first B-phase winding stator 33 and the second B-phase winding stator 34, and the third rotor 43 is disposed between the first C-phase winding stator 35 and the second C-phase winding stator 36. And in the circumferential direction, the second rotor 42 is deflected at an angle with respect to the first rotor 41, and the third rotor 43 is deflected at an angle with respect to the second rotor 42.

The axial magnetic field motor of the utility model splits the traditional three-phase winding stator into three independent single-phase winding stators, each single-phase winding stator is provided with two, and a rotor is arranged between each two single-phase winding stators so as to form a complete motor winding stator and a rotor structure unit which are used as a driving unit of the motor. Meanwhile, the arrangement of the paired single-phase winding stators is adopted, namely, one single-phase winding stator is arranged on each side of the rotor, so that the magnetic energy of the rotor can be more fully utilized, and the power conversion of the motor can be further improved.

Specifically, the axial magnetic field motor can also increase the number of sets of stator and rotor according to the requirement of output torque.

Further, in order to prevent the magnetic lines generated by the single-phase winding stator from diffusing to the outside, so that the magnetic lines are concentrated around the single-phase winding stator to optimize the magnetic field loop, in the preferred embodiment, as shown in fig. 5, a yoke 301 is disposed on each of the first a-phase winding stator 31 and the second a-phase winding stator 32 at a side far from the first rotor 41. To achieve a better effect, the first B-phase winding stator 33 and the second B-phase winding stator 34 are each provided with a yoke 301 on a side away from the second rotor 42, and the first C-phase winding stator 35 and the second C-phase winding stator 36 are each provided with a yoke 301 on a side away from the third rotor 43.

Further, as shown in fig. 3 and 4, in the present embodiment, positioning protrusions 101 are provided on the inner wall of the motor housing 10, and positioning grooves 302 are provided on the stator assembly 30, that is, positioning grooves 302 are provided on the first a-phase winding stator 31, the second a-phase winding stator 32, the first B-phase winding stator 33, the second B-phase winding stator 34, the first C-phase winding stator 35, and the second C-phase winding stator 36. The stator assembly 30 is fixedly mounted inside the motor housing 10 by the engagement of the positioning protrusions 101 and the positioning grooves 302 on the inner wall of the motor housing 10. Preferably, in order to make the single-phase winding stator fixed inside the motor housing 10 more stable and the single-phase winding stator stressed more uniformly when the motor is operated, it is preferable that three positioning protrusions 101 are provided on the inner wall of the motor housing 10, the three positioning protrusions 101 are provided on the inner wall of the motor housing at uniform intervals along the circumferential direction of the motor housing, and correspondingly, three positioning grooves 302 (as shown in fig. 4) are also provided on each single-phase winding stator, and the three positioning grooves 302 are provided on the circumferential surface of the single-phase winding stator at uniform intervals along the circumferential direction of the single-phase winding stator. When the motor is installed, the positioning grooves 302 on each single-phase winding stator are in one-to-one correspondence with the positioning protrusions 101 on the inner wall of the motor housing 10, namely, the positioning protrusions 101 are embedded in the positioning grooves 302.

Further, as shown in fig. 6, taking the structure of the first rotor 41 as an example, in this embodiment, the first rotor 41, the second rotor 42 and the third rotor 43 each include a fixed disc 401 and a magnetic steel rotor 402, wherein the fixed disc 401 is provided with external teeth 4011, the magnetic steel rotor 402 is provided with internal grooves 4021, the fixed disc 401 is fixedly arranged on the motor shaft 20, and the internal grooves 4021 on the magnetic steel rotor 402 are matched with the external teeth 4011 on the fixed disc 401 to be relatively fixed with the fixed disc 401. In operation, the rotating magnetic field generated by the single-phase winding stator causes the magnetic steel rotor 402 to rotate, and the rotation of the magnetic steel rotor 402 drives the fixed disc 401 to rotate, so that the fixed disc 401 drives the motor shaft 20 to rotate.

Specifically, as shown in fig. 1 and 3, in the present embodiment, the motor housing 10 includes a front through cover 11, a middle housing 12 and a rear through cover 13, and specifically, the front through cover 11, the middle housing 12 and the rear through cover 13 are detachably and fixedly connected together by a first connecting bolt 50, a first end, i.e., a front end, of the motor shaft 20 is rotatably disposed on the front through cover 11 of the motor housing 10 by a first bearing 201, and a second end, i.e., a rear end, of the motor shaft 20 is rotatably disposed on the rear through cover 13 of the motor housing 10 by a second bearing 202. Through this structural design, simple structure, the dismouting is simple, convenient assembly. Specifically, in the present embodiment, the first bearing 201 and the second bearing 202 each employ a deep groove ball bearing.

Further, to facilitate assembly of the stator assembly 30 and the rotor assembly 40 within the motor housing 10, it is preferable that, as shown in fig. 3, in the present embodiment, the middle housing 12 includes a first segment housing 121, a second segment housing 122, and a third segment housing 123, that is, the middle housing 12 is composed of three segment housings.

Further, in order to prevent external dust or debris from entering the inside of the motor housing 10, in the present embodiment, an oil seal 111 is further provided on the front through cover 11, and an end cover 131 is provided on the rear through cover 13. Specifically, the end cap 131 is mounted and fixed to the rear cover 131 by the second coupling bolt 60.

Further, as shown in fig. 1, an electrical connector 100 is further provided on the motor housing 10, specifically, on the end cover 131, and the electrical connector 100 is used for electrically connecting with the stator assembly 30, so that when the motor is used, the electrical connector 100 can be directly connected with an external power socket, which is convenient and fast.

Further, in order to detect the rotational speed of the motor in real time during the operation of the motor, in the present embodiment, as shown in fig. 2, an encoder magnetic steel 71 is disposed at the second end, which is the tail end of the motor shaft 20, and an encoder 72 is disposed at the end cover 131, which is the rear end of the motor housing 10, so that the change of the magnetic pole of the encoder magnetic steel 71 is detected in real time during the operation, and the rotational speed of the motor shaft 20, which is the rotational speed of the motor, can be detected. Specifically, the data line of the encoder 72 may be connected to the electrical connector 100 when in use.

Specifically, in the axial field motor of the present utility model, during assembly, the second bearing 202 is first pressed into the rear through cover 13, then the second end of the motor shaft 20 is pressed into the inner ring of the second bearing 202, then the second C-phase winding stator 36 (with yoke 301) is mounted on the rear through cover 13, then the third rotor 43 is mounted on the motor shaft 20, then the third segment housing 123 is connected with the rear through cover 13, then the first C-phase winding stator 35 and the second B-phase winding stator 34 are mounted on the third segment housing 123, and then the second segment housing 122 and the third segment housingBody 123 is connected to mount second rotor 42 to motor shaft 20, then first B-phase winding stator 33 and second a-phase winding stator 32 are mounted to second segment housing 122, then first segment housing 121 is connected to second segment housing 122, and first rotor 41 is mounted to motor shaft 20, (specifically, upon mounting the rotor assembly to motor shaft 20, second rotor 42 may be deflected (rotated) by a physical angle on the motor shaft relative to first rotor 41, i.e., second rotor 42 may be deflected by a physical angle relative to first rotor 41 in the circumferential direction of motor shaft 20, as well as third rotor 43 may be deflected by a physical angle relative to second rotor 42, as desired, depending on the physical angle of the particular deflection, may be formed byTo make the determination. ) The first a-phase winding stator 31 is then mounted to the first segment housing 121; after the stator assembly 30 is installed, two single-phase winding stators with the same phase can be connected through a connecting wire 81 (as shown in fig. 4), one ends of the three single-phase winding stators are connected together through a winding parallel wire 83, and the other ends are led out through a winding lead 82 to be connected with the electric connector 100. Subsequently, the first bearing 201 and the oil seal 111 are sequentially mounted to the front through cover 11, and then the front through cover 11 with the first bearing 201 and the oil seal 111 mounted thereto is then fitted over the first end of the motor shaft 20, and then the motor housing 10, i.e., the front through cover 11, the first segment housing 121, the second segment housing 122, and the third segment housing 123 and the rear through cover 13 are coupled and fixed together by the first coupling bolt 50. Then, the encoder magnetic steel 71 is mounted to the rear end, i.e., the second end, of the motor shaft 20, and the encoder 72 is mounted on the end cover 131, and the encoder 72 is a data line connected to the electrical connector 100 provided on the end cover 131, and finally the end cover 131 is fastened to the rear through cover 13 by the second connection bolt 60.

In summary, according to the axial magnetic field motor disclosed by the utility model, the three-phase motor stator windings are separately arranged into three independent single-phase winding stators, and each single-phase winding stator is arranged in pairs, so that the number of turns of a winding conductor of each single-phase winding stator is more, higher current density can be further formed, the power density of the motor can be effectively improved under the condition of the same magnetic density, larger torque output can be further realized, and the overload capacity of the motor is improved. Meanwhile, the arrangement of the paired single-phase winding stators is adopted, namely, one single-phase winding stator is arranged on each side of the rotor, so that the magnetic energy of the rotor can be more fully utilized, and the power conversion of the motor can be further improved. In practice, for n-phase (n > 3) motor windings, the n-phase stator windings may be separately arranged into n independent single-phase winding stators, with each single-phase winding stator being arranged in pairs, each pair of rotors being previously deflected by a physical angle as described above. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (10)

1. An axial field motor, comprising:

a motor housing,

the motor shaft is rotatably arranged in the motor shell;

the stator assembly is fixedly arranged in the motor shell and at least comprises a first A-phase winding stator, a second A-phase winding stator, a first B-phase winding stator, a second B-phase winding stator, a first C-phase winding stator and a second C-phase winding stator;

the rotor assembly is fixedly mounted on the motor shaft and at least comprises a first rotor, a second rotor and a third rotor, wherein the first rotor is arranged between the first A-phase winding stator and the second A-phase winding stator, the second rotor is arranged between the first B-phase winding stator and the second B-phase winding stator, the third rotor is arranged between the first C-phase winding stator and the second C-phase winding stator, and in the circumferential direction, the second rotor is deflected by a certain angle relative to the first rotor, and the third rotor is deflected by a certain angle relative to the second rotor.

2. The axial field motor of claim 1, wherein a yoke is disposed on each of the first and second a-phase winding stators on a side thereof remote from the first rotor.

3. An axial field motor as defined in claim 1, wherein a positioning protrusion is provided on an inner wall of the motor housing, and a positioning groove is provided on the stator assembly, and the positioning protrusion is embedded in the positioning groove.

4. The axial field motor of claim 1, wherein the first rotor, the second rotor, and the third rotor each comprise a fixed disk and a magnetic steel rotor, wherein the fixed disk is fixedly disposed on the motor shaft, an external tooth is disposed on the fixed disk, an internal groove is disposed on the magnetic steel rotor, and the internal groove is disposed on the magnetic steel rotor and the external tooth is disposed on the fixed disk.

5. The axial field motor of claim 1, wherein the motor housing comprises a front through cover, a middle housing, and a rear through cover, the front through cover, the middle housing, and the rear through cover are detachably and fixedly connected, a first end of the motor shaft is rotatably disposed on the front through cover through a first bearing, and a second end of the motor shaft is rotatably disposed on the rear through cover through a second bearing.

6. The axial field motor of claim 5, wherein the first bearing and the second bearing are deep groove ball bearings.

7. The axial field motor of claim 5, wherein the middle housing comprises a first segmented housing, a second segmented housing, and a third segmented housing.

8. An axial field motor as defined in claim 5, wherein the front cover is further provided with an oil seal, the rear cover is further provided with an end cap, and the oil seal and the end cap are adapted to prevent external dust or debris from entering the motor housing.

9. An axial field motor as defined in claim 1, wherein the motor housing is further provided with an electrical connector for electrical connection with the stator assembly.

10. The axial field motor of claim 1, wherein the tail end of the motor shaft is provided with an encoder magnet steel, and the rear end of the motor housing is further provided with an encoder for detecting the rotational speed of the motor shaft.