CN211351838U

CN211351838U - Motor stator rotor structure and motor

Info

Publication number: CN211351838U
Application number: CN202020462252.7U
Authority: CN
Inventors: 顾磊磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2020-08-25
Anticipated expiration: 2030-04-01

Abstract

The embodiment of the utility model discloses a motor stator rotor structure and a motor, which comprises a stator and a rotor arranged in the center of the stator, wherein the outer surface of a stator core body of the stator is provided with a groove; the inner circle surface of the stator core body is provided with a stator tooth pole, the end part of the stator tooth pole is provided with a wing part, and the wing part is provided with a notch; a first magnetic line of force through hole is formed in the stator tooth pole; the rotor is provided with a magnet groove, a magnetism isolating air groove and a second magnetic line of force through hole. The utility model discloses an increase first magnetic line hole on the rotor, increased second magnetic line hole and recess on the stator for magnetic field magnetic line moves towards more balanced, has reduced the magnetic resistance, produces the volume reduction of the required magnet steel of same electromagnetic torque. Therefore, the motor stator rotor structure improves the working efficiency of the motor, the wall thickness structural design of the rotor and the stator is more balanced, the weight of the motor is reduced, the noise generated when the motor is used is reduced to a great extent, meanwhile, the heat dissipation is convenient, and the service life of the motor is prolonged.

Description

Motor stator rotor structure and motor

Technical Field

The utility model relates to a motor parts technical field especially relates to a motor stator rotor structure and motor.

Background

The motor is commonly called as a motor, and is an electromagnetic device for realizing electric energy conversion or transmission according to the electromagnetic induction law, and mainly comprises a stator, a rotor and other accessories, wherein the stator is a fixed part in the motor, and is provided with paired direct-current excitation static main magnetic poles; the rotor is a rotating part in the motor, also called an armature core, on which an armature winding is arranged, and after being electrified, the rotor generates induced electromotive force which serves as a rotating magnetic field and then generates electromagnetic torque to perform energy conversion.

The motor can be divided into a synchronous motor and an asynchronous motor, the synchronous motor has high operation efficiency and good stability, and is often used as a generator. In recent years, with the rapid development of power electronic technology, microelectronic technology, novel motor control theory and rare earth permanent magnet materials, permanent magnet synchronous motors can be rapidly popularized and applied, and permanent magnet synchronous motors, particularly rare earth permanent magnet synchronous motors, have the advantages of less loss, high efficiency and obvious electricity-saving effect. But traditional permanent-magnet machine's rotor and stator, the structure is reasonable inadequately, and the magnetic field trend is inhomogeneous, can produce fatigue in the use, and uses for a long time and can cause motor job stabilization nature poor, the noise increases, and work efficiency reduces, and heat dispersion is limited simultaneously, can lead to the motor to burn out, shortens the life of motor.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model is to provide a job stabilization nature is better, can improve permanent-magnet machine work efficiency, increase of service life's stator rotor device.

In order to solve the technical problem, the utility model provides an electric motor stator rotor structure, it includes:

the stator is provided with a stator core body, and a groove is formed in the outer surface of the stator core body; the inner circular surface of the stator core body is provided with stator tooth poles extending along the radial direction of the stator core body; the extreme end part of the stator tooth is provided with wing parts extending towards two sides; the wing part is provided with a notch; one end of the stator tooth pole, which is far away from the wing part, is provided with a first magnetic line of force through hole;

the rotor is arranged in the center of the stator, and a magnet groove is formed in the rotor; magnetic isolation air grooves are formed in the two ends of the magnet groove; and a second magnetic line of force through hole is also arranged on the rotor.

Preferably, the stator teeth are provided with six teeth which are uniformly distributed on the inner circular surface of the stator core.

Preferably, six first magnetic line of force through-holes are arranged on six stator tooth poles respectively.

Preferably, the number of the grooves is multiple, and each groove is arranged corresponding to the first magnetic line of force through hole.

Preferably, the shape of the groove is any one or more combination of rectangle, U-shape and semicircle.

Preferably, the number of the second magnetic line of force through holes is four and is uniformly distributed around the center of the rotor.

Preferably, the first magnetic line of force through-hole and/or the second magnetic line of force through-hole are/is set to be any one of rectangular and circular.

Preferably, the magnet slots are rectangular, and four magnet slots are uniformly distributed around the center of the rotor.

Preferably, the magnetism isolating air groove has a polygonal shape.

Secondly, the utility model discloses still relate to a motor, including the casing with as above-mentioned arbitrary motor stator rotor structure, motor stator rotor structure locates in the casing.

Compared with the prior art, motor stator rotor structure have following advantage:

the first magnetic line hole is formed in the rotor, the second magnetic line hole and the groove are formed in the stator, so that magnetic lines of force of a magnetic field are more balanced, magnetic resistance is reduced, and the amount of magnetic steel required for generating the same electromagnetic torque is reduced.

Therefore, the motor stator rotor structure improves the working efficiency of the motor, the wall thickness structural design of the rotor and the stator is more balanced, the weight of the motor is reduced, the noise generated when the motor is used is reduced to a great extent, meanwhile, the heat dissipation is convenient, and the service life of the motor is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention 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 following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a stator and rotor structure of a motor and a motor according to an embodiment of the present invention;

FIG. 2 is a schematic view of the stator structure of FIG. 1;

FIG. 3 is a schematic view of the rotor of FIG. 1;

fig. 4 is a schematic perspective view of a stator and rotor structure of a motor and a motor according to another embodiment of the present invention;

FIG. 5 is a schematic view of the stator structure of FIG. 4;

fig. 6 is a schematic view of the rotor structure of fig. 4.

Reference numerals

1-a stator; 2-a rotor; 11-a stator core; 12-stator teeth pole; 13-stator slots; 14-a wing portion; 15-incision; 16-a groove; 17-a first flux through hole; 21-a magnet slot; 22-magnetic isolation air groove; 23-second flux through hole.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the following detailed description of the embodiments of the present invention is provided with the accompanying drawings, and the description of the present invention is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model is usually placed when in use, and are used for convenience of description and simplification of description, but do not refer to or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 6, the embodiment of the present invention provides a motor stator and rotor structure, which includes:

the stator 1 is provided with a stator core body 11, and the outer surface of the stator core body 11 is provided with a groove 16; the inner circular surface of the stator core body 11 is provided with stator teeth poles 12 extending along the radial direction of the stator core body 11; the end part of the stator tooth pole 12 is provided with wing parts 14 extending towards two sides; the wing part 14 is provided with a notch 15; one end of the stator tooth pole 12 far away from the wing part 14 is provided with a first magnetic line of force through hole 17;

a rotor 2 arranged at the center of the stator 1, wherein the rotor 2 is provided with a magnet slot 21; magnetic isolation air grooves 22 are arranged at two ends of the magnet groove 21; the rotor 2 is also provided with a second magnetic line of force through hole 23.

Wherein, the appearance of stator 1 and rotor 2 all can be established to be circular, and stator 1 center is equipped with the through-hole, and rotor 2 locates and keeps coaxial with stator 1 in the stator 1 through-hole to can be relative stator 1 free rotation, and be equipped with annular air gap between the outer circular surface of the interior circle surface of stator 1 and rotor 2.

The stator teeth 12 and the wings 14 may be formed in an integrated structure.

The magnet slots 21 are used for mounting permanent magnets, the magnet slots 21 can be rectangular, the four magnet slots 21 are uniformly distributed around the center of the rotor 2, the four magnet slots 21 are enclosed to form a square shape, the stator coil is wound on the stator tooth pole 12, and a magnetic field can be generated after electricity is passed.

The magnet slots 21 are used for preventing the magnetic flux of the permanent magnet from short-circuiting, the magnet slots 21 and the magnetic isolation air slots 22 are of an integrated structure, and the magnetic isolation air slots 22 can be polygonal, such as triangular, rectangular or quadrilateral.

The utility model discloses a set up recess 16 and first magnetic line of force through-hole 17 on stator 1, set up second magnetic line of force through-hole 23 on rotor 2 for magnetic field magnetic line of force moves towards more balanced, has reduced the magnetic resistance, produces the volume reduction of the same used magnet steel of electromagnetic torque, alleviates the whole weight of motor simultaneously.

As a further preferred feature of the present embodiment, the stator teeth 12 are provided with six and uniformly distributed on the inner circular surface of the stator core 11, and the stator slots 13 are distributed between the stator teeth 12; the first magnetic line of force through hole 17 can also be provided with six and respectively arranged on six stator tooth poles 12; the second magnetic force line through holes 23 are four and evenly distributed around the center of the rotor 2, the second magnetic force line through holes 23 may be disposed at positions between the magnet slots 21 and the center of the rotor 2, for example, the four second magnetic force line through holes 23 are respectively disposed on diagonal lines of a square enclosed by the four magnet slots 21.

Further, both the first magnetic line of force through hole 17 and the second magnetic line of force through hole 23 may be formed in a rectangular shape or a circular shape, or the first magnetic line of force through hole 17 may be formed in a rectangular shape, the second magnetic line of force through hole 23 may be formed in a circular shape, or the first magnetic line of force through hole 17 may be formed in a circular shape, and the second magnetic line of force through hole 23 may be formed in a rectangular shape.

Further, a plurality of grooves 16 are provided, each groove 16 is provided corresponding to the first magnetic line of force through hole 17, and the shape of the plurality of grooves 16 is any one or combination of a rectangle, a U shape and a semicircle.

Specifically, referring to fig. 1-3, in one embodiment of the present invention, four recesses 16 are provided, wherein a first and a second recess 16 are symmetrically disposed along the central axis of the stator core 11, and a third and a fourth recess 16 are symmetrically disposed on both sides of the first recess 16.

In particular, referring to fig. 4-6, in another embodiment of the present invention, the grooves 16 are provided with six grooves, which are uniformly distributed on the outer circumferential surface of the stator core 11, two of the grooves are arranged in a rectangular shape and symmetrically along the central axis of the stator core 11, and the other four grooves are arranged in a semicircular shape and symmetrically with two sides of the rectangular grooves 16.

The utility model discloses still relate to a motor, including the casing and as above-mentioned arbitrary motor stator rotor structure, this motor stator rotor structure locates in the casing.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present invention have been explained herein using specific examples, which are presented only to assist in understanding the methods and their core concepts. It should be noted that there are infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that various improvements, decorations or changes can be made without departing from the principles of the present invention, and the technical features can be combined in a suitable manner; the application of these modifications, variations or combinations, or the application of the concepts and solutions of the present invention in other contexts without modification, is not intended to be considered as a limitation of the present invention.

Claims

1. An electric machine stator-rotor structure, comprising:

the stator (1) is provided with a stator core body (11), and grooves (16) are formed in the outer surface of the stator core body (11); the inner circular surface of the stator core body (11) is provided with stator teeth poles (12) extending along the radial direction of the stator core body (11); the end part of the stator tooth pole (12) is provided with wing parts (14) extending towards two sides; the wing part (14) is provided with a notch (15); one end of the stator tooth pole (12) far away from the wing part (14) is provided with a first magnetic line of force through hole (17);

the rotor (2) is arranged at the center of the stator (1), and a magnet groove (21) is formed in the rotor (2); magnetic isolation air grooves (22) are formed in the two ends of the magnet groove (21); and a second magnetic line of force through hole (23) is also arranged on the rotor (2).

2. The electric machine stator-rotor arrangement according to claim 1, characterized in that the stator teeth (12) are provided with six and evenly distributed over the inner circular surface of the stator core (11).

3. The electric machine stator rotor structure according to claim 2, characterized in that the first magnetic line of force through holes (17) are provided in six, respectively on six stator teeth (12).

4. The electric machine stator rotor structure according to claim 3, characterized in that the grooves (16) are provided in plurality, and each of the grooves (16) is provided corresponding to the first magnetic flux through-holes (17).

5. The structure of the stator and the rotor of the motor according to claim 4, characterized in that the shape of the groove (16) is any one or more combination of rectangle, U-shape and semicircle.

6. The electric machine stator rotor structure according to claim 1, characterized in that the second flux through holes (23) are four and evenly distributed around the center of the rotor (2).

7. The electric machine stator rotor structure according to claim 1, characterized in that the first magnetic flux through-hole (17) and/or the second magnetic flux through-hole (23) is provided in any one of a rectangular shape and a circular shape.

8. The electric machine stator rotor structure according to claim 1, characterized in that the magnet slots (21) are provided as rectangles, the magnet slots (21) being provided with four and evenly distributed around the center of the rotor (2).

9. The electric motor stator-rotor structure according to claim 1, wherein the magnetism isolating air groove (22) is provided in a polygonal shape.

10. An electric machine, comprising: the motor stator rotor structure of any one of claims 1-9, wherein the motor stator rotor structure is arranged in the housing.