Stator and rotor arrangement structure for motor and motor
By adjusting the angle settings of the magnets and stator teeth, increasing the tangential force angle and reducing the radial force angle, the problems of low motor torque and high noise are solved, achieving more efficient power transmission and reducing noise.
Patent Information
- Application Number
- CN202422716112.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-07
AI Technical Summary
In the existing motor stator and rotor arrangement structure, the torque is low and the noise is serious, mainly because the radial force is large and the tangential force is small, resulting in low torque and serious noise problems.
By changing the setting angles of the magnets and the stator teeth, an angle is set between the length direction of the magnets and the tangential direction of the rotor body, and an angle is set between the center line of the stator teeth and the radial direction of the stator body, thereby increasing the angle of the tangential force and reducing the angle of the radial force, thereby increasing the torque and reducing the noise.
It effectively increases the torque of the motor, reduces noise problems, and achieves more efficient power transmission and reduces noise.
Smart Images
Figure CN223451703U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric machines, in particular to a stator-rotor arrangement for electric machines and an electric machine. BACKGROUND
[0002] The existing stator tooth structure of electric machines generally adopts straight tooth design, and the arrangement form of the magnetic steel is matched with the stator tooth, for example, arranged along the tangential direction of the rotor. During the operation of the electric machine, the magnetic field of the stator interacts with the magnetic field of the rotor, and the rotation of the magnetic field of the stator drives the rotation of the rotor. The magnetic field of the stator and the rotor is mutually coupled, and is decomposed into radial force and tangential force. The radial force acts on the stator tooth to generate vibration and noise, while the tangential force acts on the rotor to generate torque and drive the rotation of the rotor.
[0003] In the existing structure design, when the magnetic field of the stator and the rotor is mutually coupled, due to the arrangement angle, the tangential force generated is small and the radial force is large, which not only leads to low torque, but also causes serious noise problem. CONTENT OF THE INVENTION
[0004] Therefore, the purpose of the present application is to provide a stator-rotor arrangement for electric machines and an electric machine, so as to solve the problems of low torque and serious noise of the existing stator-rotor arrangement for electric machines.
[0005] According to the first aspect of the present application, a stator-rotor arrangement for electric machines is provided, wherein the stator-rotor arrangement for electric machines comprises: a rotor main body; a magnetic steel arranged on the rotor main body, an angle is arranged between the length direction of the magnetic steel and the tangential direction of the rotor main body; a stator main body arranged outside the rotor main body; and a stator tooth arranged on the inner periphery of the stator main body, an angle is arranged between the center line of the stator tooth and the radial direction of the stator main body.
[0006] Preferably, the number of the stator teeth is multiple, and the number of the magnetic steels is multiple.
[0007] Preferably, the length direction of the magnetic steel can be perpendicular to the center line of at least one of the stator teeth, and at this time, the midpoint of the length direction of the magnetic steel is located on the center line of the stator tooth.
[0008] Preferably, the multiple stator teeth are arranged equidistantly along the inner periphery of the stator main body, and the multiple magnetic steels are arranged equidistantly along the circumferential direction of the rotor main body.
[0009] Preferably, the angles between the center lines of the multiple stator teeth and the radial direction of the stator main body are the same.
[0010] Preferably, the angles between the length directions of the multiple magnetic steels and the tangential direction of the rotor main body are the same.
[0011] Preferably, the stator body is formed in a ring shape.
[0012] Preferably, the intersection of the center line of the stator tooth and the outer circle of the stator body is a first intersection, the line connecting the first intersection and the center of the stator body is a first line, the included angle between the first line and the center line of the stator tooth is a first included angle, and the angle of the first included angle is 0° to 75°.
[0013] Preferably, the rotor body is formed in a ring shape, and the diameter of the outer circle of the rotor body is smaller than the diameter of the inner circle of the stator body.
[0014] According to the second aspect of the present application, a motor is provided, wherein the motor comprises the stator-rotor arrangement structure for a motor as described above.
[0015] The stator-rotor arrangement structure for a motor and the motor of the present application have the following advantages: the magnetic steel is arranged on the rotor body, and an included angle is arranged between the length direction of the magnetic steel and the tangential direction of the rotor body; the stator body is arranged outside the rotor body, and the stator tooth is arranged on the inner periphery of the stator body; an included angle is arranged between the center line of the stator tooth and the radial direction of the stator body; the angle of the magnetic field force generated by the interaction between the stator and the rotor is increased by changing the arrangement angle of the magnetic steel and the stator tooth, i.e., the angle of the tangential force is increased and the angle of the radial force is reduced, so that the torque is increased and the noise is reduced; and the problem of low torque and serious noise of the existing motor is effectively solved.
[0016] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.
[0018] Figure 1 is a schematic view of the stator-rotor arrangement structure for a motor according to the present application.
[0019] Figure 2 is a schematic view of the stator-rotor arrangement structure for a motor according to the present application.
[0020] Reference numerals: 1 - rotor body; 10 - magnet steel; 2 - stator body; 20 - stator tooth; 3 - center line; 4 - first intersection point; 5 - first connecting line; 6 - first included angle. DETAILED DESCRIPTION
[0021] The following detailed description is presented to aid the reader in gaining a comprehensive understanding of the methods, apparatuses, and / or systems described herein. However, various changes, modifications, and equivalents can be used, and the
[0022] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the methods, apparatuses, and / or systems to those skilled in the art. Accordingly, the features described herein should not be construed as limiting, but merely as illustrative.
[0023] Throughout the specification, when an element (such as a layer, region, or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, or "covering" another element, it can be directly on, connected, coupled, adjacent to, or covering the other element or one or more other elements can be intervening. In contrast, when an element is referred to as being "directly on," "directly connected to," "directly coupled to," "directly adjacent to," or "directly covering" another element, there are no intervening elements present.
[0024] As used herein, the term "and / or" includes any one of the listed items and any combination of two or more of the listed items.
[0025] Although terms such as "first" and "second" and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, elements, components, regions, layers and / or sections referred to as a first element, component, region, layer or section herein can also be referred to using a second element, component, region, layer or section, without departing from the teachings of the examples.
[0026] For ease of description, spatial terms such as "over," "upper," "under," and "lower" can be used with respect to the orientation of one element relative to another element as illustrated in the figures. Such spatial terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as being "over" or "upper" relative to other elements would then be oriented "under" or "lower" relative to the other elements. Accordingly, the term "over" encompasses both an "over" and an "under" orientation. The device can be oriented in other ways (e.g., rotated 90 degrees or at other orientations) and terms such as "over," "upper," "under," and "lower" used herein will be interpreted accordingly.
[0027] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of examples. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including" and "has" or "having" and the like are inclusive of the stated features, numbers, operations, components, elements, and / or the like, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or the like.
[0028] Variations in shapes illustrated in the figures can occur as a result of manufacturing processes and / or tolerances. Thus, the examples described herein are not limited to the precise shapes illustrated in the figures, but include variations in shapes that occur as a result of manufacturing processes.
[0029] Features of the examples described herein can be combined with one another in any manner within the scope of the disclosure. In addition, while examples are described herein as having various configurations, other configurations are also possible according to the disclosure.
[0030] As Figure 1 and Figure 2As shown, according to a first aspect of the present invention, a stator-rotor arrangement structure for a motor is provided. The stator-rotor arrangement structure for a motor includes a rotor body 1 , magnetic steel 10 , a stator body 2 and stator teeth 20 .
[0031] In the following description, reference will be made to Figure 1 and Figure 2 The specific structures of the above components of the stator and rotor arrangement structure for the motor and the connection relationship of the above components are described in detail.
[0032] like Figure 1 and Figure 2 As shown, in an embodiment, the magnet 10 can be arranged on the rotor body 1. An angle can be set between the length direction of the magnet 10 and the tangential direction of the rotor body 1, that is, the length direction of the magnet 10 is not perpendicular to the radial direction of the rotor body 1. The stator body 2 can be sleeved on the outside of the rotor body 1, and the rotor body 1 can rotate inside the stator body 2. The stator teeth 20 can be arranged on the inner circumference of the stator body 2, and an angle can be set between the center line 3 of the stator teeth 20 and the radial direction of the stator body 2, that is, the center line 3 of the stator teeth 20 does not coincide with the radial direction of the stator body 2. In this way, by changing the setting angle of the magnet 10 and the stator teeth 20, the angle of the tangential force can be increased and the angle of the radial force can be reduced, thereby increasing the torque of the motor and reducing the noise.
[0033] Preferably, Figure 1 and Figure 2 As shown, in an embodiment, the shape of the rotor body 1 can be annular, and the rotor body 1 can be sleeved and installed on the rotating shaft to drive the rotating shaft to rotate. A rectangular mounting groove can be provided on the rotor body 1, and the mounting groove is used to install a bar-shaped magnetic steel 10. The shape of the stator body 2 can be approximately annular. Specifically, the shape of the stator body 2 can be approximately a disc, and a plurality of stator bodies 2 can be stacked along the axial direction. The stator body 2 is sleeved on the outside of the rotor body 1, and drives the rotor body 1 to rotate by magnetic force, and then indirectly drives the rotating shaft to rotate, so as to realize the function of the motor. Preferably, the diameter of the outer circle of the rotor body 1 (i.e., the outer diameter) is smaller than the diameter of the inner circle of the stator body 2 (i.e., the inner diameter).
[0034] Preferably, Figure 1 and Figure 2As shown in the embodiments, the number of the stator teeth 20 and the number of the magnetic steel 10 can be multiple. Taking any one of the stator teeth 20 as an example, the intersection of the center line 3 of the stator tooth 20 and the outer circle of the stator body 2 can be a first intersection point 4. The line connecting the first intersection point 4 and the center of the stator body 2 can be a first connecting line 5. The included angle between the first connecting line 5 and the center line 3 of the stator tooth 20 can be a first included angle 6. Preferably, the angle of the first included angle 6 is 0° to 75° (0° is not included). Such arrangement can better increase the torque of the motor and reduce noise.
[0035] Further, preferably, as shown in the embodiments, Figure 1 and Figure 2 As shown in the embodiments, during the rotation of the rotor body 1, the position of the magnetic steel 10 also changes. At a certain moment, the length direction of the magnetic steel 10 can be perpendicular to the center line 3 of at least one stator tooth 20, and at this time, the midpoint in the length direction of the magnetic steel 10 is located on the center line 3 of the stator tooth 20. Such arrangement can further increase the torque of the motor and reduce noise.
[0036] Preferably, as shown in the embodiments, Figure 1 and Figure 2 As shown in the embodiments, a plurality of stator teeth 20 can be arranged along the circumferential direction of the stator body 2. Further, a plurality of stator teeth 20 can be arranged equidistantly along the inner periphery of the stator body 2, that is, the stator teeth 20 are arranged close to the inner circle side of the stator body 2, and the distance between adjacent stator teeth 20 can be equal.
[0037] Preferably, as shown in the embodiments, Figure 1 and Figure 2 As shown in the embodiments, the angle of the included angle (which can be the first included angle 6) between the center line 3 of the plurality of stator teeth 20 and the radial direction of the stator body 2 can be the same. That is, the stator teeth 20 are arranged obliquely compared to straight teeth, and the oblique angles of the respective stator teeth 20 can be the same. Further, preferably, the plurality of stator teeth 20 can be arranged symmetrically about the center.
[0038] Preferably, as shown in the embodiments, Figure 1 and Figure 2 As shown in the embodiments, a plurality of magnetic steels 10 can be arranged along the circumferential direction of the rotor body 1. Further, a plurality of magnetic steels 10 can be arranged equidistantly along the circumferential direction of the rotor body 1, that is, the distance between adjacent magnetic steels 10 can be equal.
[0039] Preferably, as shown in the embodiments, Figure 1 and Figure 2As shown in the embodiment, the angle between the length direction of the plurality of magnetic steels 10 and the tangential direction of the rotor body 1 is the same, that is, the magnetic steels 10 are arranged obliquely compared with the one-shaped magnetic steels in the prior art, and the oblique angle of each magnetic steel 10 can be the same. Further, preferably, the plurality of magnetic steels 10 can be arranged in a central symmetry.
[0040] In addition, as Figure 1 and Figure 2 As shown in the embodiment, the angle between the length direction of the plurality of magnetic steels 10 and the tangential direction of the rotor body 1 is the same, that is, the magnetic steels 10 are arranged obliquely compared with the one-shaped magnetic steels in the prior art, and the oblique angle of each magnetic steel 10 can be the same. Further, preferably, the plurality of magnetic steels 10 can be arranged in a central symmetry.
[0041] In use, the magnetic steels 10 and the stator teeth 20 are arranged obliquely, and the arrangement position and the oblique angle of the magnetic steels 10 can correspond to the oblique angle of the stator teeth 20. In this way, by changing the arrangement angle of the magnetic steels 10 and the stator teeth 20, the angle of the tangential force can be increased, and the angle of the radial force can be reduced, so as to increase the torque of the motor and reduce the noise.
[0042] Finally, it should be noted that: the above-described embodiments are merely specific embodiments of the present application, used to illustrate the technical solutions of the present application, and are not limiting, the protection scope of the present application is not limited thereto, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: any person skilled in the art within the technical range disclosed by the present application, they can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A stator and rotor arrangement structure for a motor, characterized in that: The stator and rotor arrangement structure for the motor includes: rotor body; A magnetic steel is provided on the rotor body, wherein an angle is provided between a length direction of the magnetic steel and a tangent direction of the rotor body; a stator body, sleeved on the outside of the rotor body; and The stator teeth are arranged on the inner circumference of the stator body, and an angle is set between the center line of the stator teeth and the radial direction of the stator body.
2. The stator and rotor arrangement structure for a motor according to claim 1, characterized in that: There are multiple stator teeth and multiple magnetic steels.
3. The stator and rotor arrangement structure for a motor according to claim 2, characterized in that: The length direction of the magnetic steel can be perpendicular to the center line of at least one of the stator teeth. In this case, the midpoint of the magnetic steel in the length direction is located on the center line of the stator tooth.
4. The stator and rotor arrangement structure for a motor according to claim 2, characterized in that: The plurality of stator teeth are arranged at equal intervals along the inner circumference of the stator body, and the plurality of magnetic steels are arranged at equal intervals along the circumferential direction of the rotor body.
5. The stator and rotor arrangement structure for a motor according to claim 2, characterized in that: The included angles between the center lines of the plurality of stator teeth and the radial direction of the stator body are the same.
6. The stator and rotor arrangement structure for a motor according to claim 2, characterized in that: The included angles between the length directions of the plurality of magnetic steels and the tangent direction of the rotor body are the same.
7. The stator and rotor arrangement structure for a motor according to claim 1, characterized in that: The stator body is formed in a ring shape.
8. The stator and rotor arrangement structure for a motor according to claim 7, characterized in that: The intersection of the center line of the stator tooth and the outer circle of the stator body is a first intersection point, the line connecting the first intersection point and the center of the stator body is a first connecting line, the angle between the first connecting line and the center line of the stator tooth is a first angle, and the angle of the first angle is 0° to 75°.
9. The stator and rotor arrangement structure for a motor according to claim 7, characterized in that: The rotor body is formed in a ring shape, and a diameter of an outer circle of the rotor body is smaller than a diameter of an inner circle of the stator body.
10. A motor, characterized in that: The electric motor comprises the stator and rotor arrangement structure for an electric motor according to any one of claims 1 to 9.