CN111585361A - Stator and motor with same - Google Patents
Stator and motor with same Download PDFInfo
- Publication number
- CN111585361A CN111585361A CN202010472203.6A CN202010472203A CN111585361A CN 111585361 A CN111585361 A CN 111585361A CN 202010472203 A CN202010472203 A CN 202010472203A CN 111585361 A CN111585361 A CN 111585361A
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- stator
- yoke
- adjacent
- teeth
- tooth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator and a motor with the same, wherein the stator comprises: a stator yoke; the stator comprises a plurality of stator teeth, the stator teeth are arranged on the inner side of a stator yoke and are distributed along the circumferential direction of the stator yoke, a stator groove is defined between every two adjacent stator teeth, tooth claws of every two adjacent stator teeth are connected, and an opening is formed in the joint of the tooth claws of every two adjacent stator teeth. According to the stator provided by the embodiment of the invention, the holes are formed at the connecting positions of the claws of the two adjacent stator teeth, so that the use of materials can be reduced, the cost is obviously reduced, and the structural strength of the stator teeth can be ensured because the claws of the two adjacent stator teeth are connected.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a stator and a motor with the same.
Background
In the related art, the stator teeth of the stator are connected by an integrally formed metal plate, and the axial length of the metal plate is the same as that of the stator, resulting in a high cost of the stator.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the invention is to propose a stator which is structurally strong and low-cost.
The invention also provides a motor with the stator.
A stator according to an embodiment of the first aspect of the invention comprises: a stator yoke; the stator comprises a plurality of stator teeth, the stator teeth are arranged on the inner side of a stator yoke and are distributed along the circumferential direction of the stator yoke, a stator groove is defined between every two adjacent stator teeth, tooth claws of every two adjacent stator teeth are connected, and an opening is formed in the joint of the tooth claws of every two adjacent stator teeth.
According to the stator provided by the embodiment of the invention, the holes are formed at the connecting positions of the claws of the two adjacent stator teeth, so that the use of materials can be reduced, the cost is obviously reduced, and the structural strength of the stator teeth can be ensured because the claws of the two adjacent stator teeth are connected.
According to some embodiments of the invention, the junction of the claws of two adjacent stator teeth is provided with one or a plurality of the openings arranged at intervals in the axial direction of the stator yoke.
According to some embodiments of the invention, the stator comprises a plurality of first stator punching sheets and at least one second stator punching sheet which are stacked, yoke portions of all the stator punching sheets form the stator yoke, tooth portions of all the stator punching sheets form the stator teeth, wherein at least one second stator punching sheet is located between two adjacent first stator punching sheets, tooth claws of any two adjacent tooth portions of the first stator punching sheets are connected, and tooth claws of at least two adjacent tooth portions of the second stator punching sheets are arranged at intervals to form at least one part of the opening.
In some embodiments, the claws of two adjacent teeth of the first stator punching sheet are connected through a connecting sheet.
In some examples, the connecting tabs form a straight line, an arc, or a V-shape.
In some embodiments, the claws of any two adjacent teeth of the second stator punching sheet are arranged at intervals.
In some embodiments, the second stator punching sheets comprise a plurality of second stator punching sheets, and one or more first stator punching sheets are arranged between at least two adjacent second stator punching sheets; or one or more second stator punching sheets are arranged between at least two adjacent first stator punching sheets; or the plurality of first stator punching sheets and the plurality of second stator punching sheets are arranged in a staggered and stacked mode.
In some embodiments, the yoke portion of each of the first and second stator laminations comprises: the first yoke parts are connected with the tooth waists of the tooth parts of the corresponding stator punching sheet in a one-to-one correspondence mode; a plurality of second yoke sections, any adjacent two of the first yoke sections being connected by the second yoke sections.
In some examples, the first yoke portion and the corresponding tooth portion of the stator punching sheet are integrally formed in the same stator punching sheet, and the first yoke portion and the second yoke portion are connected in a clamping mode.
In some examples, one of the first yoke and the second yoke is provided with a positioning projection and the other is provided with a positioning groove cooperating with the positioning projection.
In some examples, a first via is provided on the first yoke and a second via is provided on the second yoke.
According to a further embodiment of the invention, the first stator punching sheet and the second stator punching sheet are respectively of a centrosymmetric structure.
An electric machine according to an embodiment of the second aspect of the invention comprises a stator according to the above-described embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a stator according to an embodiment of the present invention;
fig. 2 is a perspective view of a partial structure of a stator according to an embodiment of the present invention;
FIG. 3 is a partial enlarged view of the stator shown from the inside of the through hole of the stator;
fig. 4 is a schematic structural diagram of a first stator lamination of a stator according to an embodiment of the invention;
fig. 5 is a partial structural schematic diagram of a second stator lamination of the stator according to the embodiment of the invention;
reference numerals:
the stator 100, the through-hole 101, the opening 102,
the stator punching sheet comprises a first stator punching sheet 31, a second stator punching sheet 32, a first yoke portion 331, a second yoke portion 332, a positioning protrusion 333, a positioning groove 334, a tooth portion 35, a connecting sheet 36, a first through hole 37, a second through hole 38 and a notch 39.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A stator 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
As shown in fig. 1 to 3, a stator 100 according to an embodiment of the present invention includes a stator yoke 20 and a plurality of stator teeth 10, the plurality of stator teeth 10 are disposed inside the stator yoke 20, and the plurality of stator teeth 10 are arranged along a circumferential direction of the stator yoke 20, and a stator slot 13 is defined between two adjacent stator teeth 10.
Each stator tooth 10 comprises a tooth claw 11 and a tooth waist 12, one end (the outer end shown in fig. 2) of the tooth waist 12 is connected with the stator yoke 20, the other end (the inner end shown in fig. 2) of the tooth waist 12 is connected with the tooth claw 11, the tooth claws 11 of two adjacent stator teeth 10 are connected, and the connection part of the tooth claws 11 of two adjacent stator teeth 10 is provided with an opening 102. That is, the middle portion of the stator 100 has a through hole 101 extending in the axial direction thereof, and the end surfaces of the claws 11 of the stator teeth 10 form the inner peripheral surface of the stator 100.
According to the stator 100 of the embodiment of the invention, the opening 102 is arranged at the joint of the claws 11 of two adjacent stator teeth 10, so that the material consumption can be reduced, the cost can be obviously reduced, and the structural strength of the stator teeth 10 can be ensured because the claws 11 of two adjacent stator teeth 10 are connected.
In some alternative embodiments, the junction of the claws 11 of two adjacent stator teeth 10 is provided with an opening 102. For example, in the plurality of stator teeth 10, an opening 102 is formed at the joint of the tooth claws 11 of any two adjacent stator teeth 10; for another example, in the plurality of stator teeth 10, the connection portion of the claws 11 of a part of two adjacent stator teeth 10 is provided with one opening 102, and the connection portion of the claws 11 of another part of two adjacent stator teeth 10 is not provided with the opening 102 structure.
In other alternative embodiments, a plurality of openings 102 are provided at the junction of the tooth claws 11 of two adjacent stator teeth 10, and the plurality of openings 102 are arranged at intervals in the axial direction of the stator yoke 20.
For example, as shown in fig. 2 and 3, in the plurality of stator teeth 10, a plurality of openings 102 are provided at the connection position of the tooth claws 11 of any two adjacent stator teeth 10, and the number of the openings 102 is equal; for another example, in the plurality of stator teeth 10, a plurality of openings 102 are provided at the connection portion of the claws 11 of two adjacent stator teeth 10, and one opening 102 or no opening 102 is provided at the connection portion of the claws of two adjacent stator teeth 10.
As shown in fig. 2 and 3, according to some embodiments of the present invention, the stator 100 includes a plurality of first stator laminations 31 and at least one second stator lamination 32, the plurality of first stator laminations 31 and the at least one second stator lamination 32 are stacked, yoke portions of all the stator laminations are stacked to form the stator yoke 20, and tooth portions 35 at the same position of all the stator laminations are stacked to form the stator teeth 10.
The at least one second stator punching sheet 32 is located between two adjacent first stator punching sheets 31, tooth claws of any two adjacent tooth parts 35 of the first stator punching sheets 31 are connected, and the tooth claws of at least two adjacent tooth parts 35 of the second stator punching sheet 32 are arranged at intervals, so that at least one part of the opening 102 is formed. For example, one second stator punching sheet 32 is arranged between two adjacent first stator punching sheets 31, and an opening 102 is defined between two adjacent second stator punching sheets 32 and tooth claws of two adjacent tooth portions 35 of the second stator punching sheet 32.
It should be noted that two or more second stator punching sheets 32 may also be disposed between two adjacent first stator punching sheets 31, so that the size of the opening 102 is changed by adjusting the number of the second stator punching sheets 32 between the two first stator punching sheets 31, which not only saves materials and reduces cost, but also can ensure the structural strength of the stator 100.
In some embodiments, the claws of any two adjacent teeth 35 of the first stator punching sheet 31 are connected by the connecting sheet 36, that is, the teeth 35 of the first stator punching sheet 31 are connected together, wherein the connecting sheet 36 may form a straight line shape, an arc shape or a V shape. The connecting piece 36 is arranged between the tooth claws of the two adjacent tooth parts 35 of the first stator punching sheet 31, so that the structural strength of the stator 100 can be ensured, and the connecting piece 36 is simple in structure and convenient to form.
In some embodiments, the teeth of any two adjacent teeth 35 of the second stator lamination 32 are arranged at intervals, that is, the teeth 35 of the second stator lamination 32 are separately formed structural members, and the teeth 35 of the second stator lamination 32 are connected together by corresponding yoke portions thereof.
In some optional embodiments, the second stator punching sheet 32 includes a plurality of, and one or more first stator punching sheets 31 are disposed between at least two adjacent second stator punching sheets 32. By arranging the plurality of second stator punching sheets 32, the opening 102 can be formed on the inner circumferential surface of the stator 100, the material consumption is reduced, and the cost is remarkably reduced.
In other optional embodiments, the second stator punching sheet 32 includes a plurality of, and one or more second stator punching sheets 32 are disposed between at least two adjacent first stator punching sheets 31. The size of the opening 102 can be changed by adjusting the number of the second stator punching sheets 32 between two adjacent first stator punching sheets 31, so that the material is saved, the cost is reduced, and the structural strength of the stator 100 can be ensured.
In still other alternative embodiments, the second stator lamination 32 includes a plurality of first stator laminations 31 and a plurality of second stator laminations 32, which are stacked in a staggered manner, so that a plurality of openings 102 uniformly arranged are formed in the inner circumferential surface of the stator 100, which not only can greatly reduce the cost, but also can further ensure the structural strength of the stator 100.
As shown in fig. 4 and 5, in some embodiments, the yoke portion of each of the first and second stator laminations 31 and 32 includes a plurality of first yoke portions 331 and a plurality of second yoke portions 332.
Specifically, the first stator punching sheet 31 includes a plurality of teeth 35, a plurality of first yoke portions 331 and a plurality of second yoke portions 332, the plurality of first yoke portions 331 are connected to one end of the tooth waists of the plurality of teeth 35 in a one-to-one correspondence manner, so that the plurality of first yoke portions 331 are arranged at intervals in the circumferential direction of a circumference, the tooth claws of any two adjacent teeth 35 are connected by a connecting piece 36, and any two adjacent first yoke portions 331 are connected by the second yoke portions 332.
Similarly, the second stator punching sheet 32 includes a plurality of teeth 35, a plurality of first yoke portions 331 and a plurality of second yoke portions 332, the plurality of first yoke portions 331 are connected to one end of the tooth waists of the plurality of teeth 35 in a one-to-one correspondence manner, so that the plurality of first yoke portions 331 are arranged at intervals along the circumferential direction of a circumference, the teeth and claws of any two adjacent teeth 35 are arranged at intervals, and any two adjacent first yoke portions 331 are connected through the second yoke portions 332.
In some examples, the first yoke portion 331 is integrally formed with the corresponding tooth portion 35 of the stator lamination, and the first yoke portion 331 is connected to the second yoke portion 332 in a snap-fit manner. The first yoke portion 331 and the corresponding tooth portion 35 of the stator punching sheet are integrally formed, and the first yoke portion 331 and the second yoke portion 332 are connected in a clamping mode, so that the stator punching sheet is assembled together, the structure is simple, and the processing and the manufacturing are easy.
The first stator lamination 31 and the second stator lamination 32 will be described below.
As shown in fig. 4, the first stator sheet 31 includes a plurality of teeth 35, a plurality of first yoke portions 331, and a plurality of second yoke portions 332, and the plurality of first yoke portions 331 and the plurality of teeth 35 are integrally formed, so that the plurality of first yoke portions 331 and the plurality of teeth 35 are connected in a one-to-one correspondence, and the teeth of any two adjacent teeth 35 are connected by the connecting piece 36. The plurality of first yoke portions 331 and the plurality of second yoke portions 332 are arranged in a staggered manner along a circumferential direction, and both ends of the first yoke portions 331 are respectively connected to two second yoke portions 332 located on both sides thereof in a snap-fit manner.
As for the second stator punching sheet 32, as shown in fig. 5, the second stator punching sheet 32 includes a plurality of teeth 35, a plurality of first yoke portions 331 and a plurality of second yoke portions 332, the plurality of first yoke portions 331 and the plurality of teeth 35 are in one-to-one correspondence, any one first yoke portion 331 is integrally formed with the corresponding tooth 35, the teeth of any two adjacent tooth portions 35 are arranged at intervals, the plurality of first yoke portions 331 and the plurality of second yoke portions 332 are staggered in the circumferential direction of a circumference, and two ends of the first yoke portion 331 are respectively connected with the two second yoke portions 332 located at two sides thereof in a snap-fit manner, so that the plurality of teeth 35, the plurality of first yoke portions 331 and the plurality of second yoke portions 332 are connected together.
In some examples, one of the first and second yokes 331 and 332 is provided with a positioning protrusion 333 and the other is provided with a positioning groove 334 that cooperates with the positioning protrusion 333.
Specifically, as shown in fig. 2 and 4 to 5, one end of the first yoke 331 is provided with a positioning protrusion 333 and the other end of the first yoke 331 is provided with a positioning groove 334, one end of the second yoke 332 located at one side of the first yoke 331 is provided with a positioning groove 334 which is fitted with the positioning protrusion 333 of the first yoke 331, and one end of the second yoke 332 located at the other side of the first yoke 331 is provided with a positioning protrusion 333 which is fitted with the positioning groove 334 of the first yoke 331. That is, one end of each of the first and second yoke portions 331 and 332 is provided with a positioning protrusion 333 and the other end is provided with a positioning groove 334, thereby connecting the plurality of first yoke portions 331 and the plurality of second yoke portions 332 together.
In some examples, a first via 37 is provided on the first yoke 331 and a second via 38 is provided on the second yoke 332. By providing the first via hole 37 on the first yoke portion 331 and the second via hole 38 on the second yoke portion 332, the amount of material used can be reduced, thereby reducing the cost, and the structural strength of the stator 100 is not affected.
As shown in fig. 4 and 5, the first yoke 331 is provided with a notch 39 on a side away from the tooth 35, so that the material consumption can be further reduced, thereby reducing the cost.
According to a further embodiment of the present invention, the first stator punching sheet 31 and the second stator punching sheet 32 are respectively of a centrosymmetric structure, and have a simple structure, and are convenient to form and easy to assemble.
A motor (not shown) according to an embodiment of the present invention includes the stator 100 according to the above-described embodiment. Specifically, the motor includes a stator 100 and a rotor rotatably provided in a central through hole 101 of the stator 100.
Since the stator 100 according to the embodiment of the present invention has the above technical effects, the motor according to the embodiment of the present invention also has the above technical effects, that is, the motor of the present application has a small material usage amount, a low cost, and a high structural strength.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Other constructions and operations of the stator 100 and the motor according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (13)
1. A stator, comprising:
a stator yoke;
the stator comprises a plurality of stator teeth, the stator teeth are arranged on the inner side of a stator yoke and are distributed along the circumferential direction of the stator yoke, a stator groove is defined between every two adjacent stator teeth, tooth claws of every two adjacent stator teeth are connected, and an opening is formed in the joint of the tooth claws of every two adjacent stator teeth.
2. The stator as claimed in claim 1, wherein the junction of the claws of two adjacent stator teeth is provided with one or a plurality of the openings arranged at intervals in the axial direction of the stator yoke.
3. The stator of claim 1, comprising a plurality of first stator laminations and at least one second stator lamination arranged in a stack, wherein yoke portions of all the stator laminations form the stator yoke and tooth portions of all the stator laminations form the stator teeth,
the at least one second stator punching sheet is located between every two adjacent first stator punching sheets, tooth claws of any two adjacent tooth parts of the first stator punching sheets are connected, and the tooth claws of at least two adjacent tooth parts of the second stator punching sheets are arranged at intervals to form at least one part of the opening.
4. The stator according to claim 3, wherein the claws of two adjacent teeth of the first stator lamination are connected by a connecting piece.
5. A stator according to claim 4, wherein the tabs form a straight line, an arc or a V.
6. The stator as claimed in claim 3, wherein the claws of any two adjacent teeth of the second stator lamination are arranged at intervals.
7. The stator of claim 3, wherein the second stator lamination comprises a plurality of second stator laminations,
one or more first stator punching sheets are arranged between at least two adjacent second stator punching sheets; or,
one or more second stator laminations are arranged between at least two adjacent first stator laminations; or,
the first stator punching sheets and the second stator punching sheets are arranged in a staggered and stacked mode.
8. The stator of claim 3, wherein the yoke portion of each of the first and second stator laminations comprises:
the first yoke parts are connected with the tooth waists of the tooth parts of the corresponding stator punching sheet in a one-to-one correspondence mode;
a plurality of second yoke sections, any adjacent two of the first yoke sections being connected by the second yoke sections.
9. The stator of claim 8, wherein the first yoke is integrally formed with a corresponding tooth of the stator lamination in the same stator lamination, and wherein the first yoke is snap-fit to the second yoke.
10. The stator according to claim 8, wherein one of the first yoke and the second yoke is provided with a positioning projection and the other is provided with a positioning groove that cooperates with the positioning projection.
11. The stator of claim 8, wherein the first yoke portion has a first via disposed thereon and the second yoke portion has a second via disposed thereon.
12. The stator according to any one of claims 3-11, wherein the first stator lamination and the second stator lamination are each of a centrosymmetric structure.
13. An electrical machine comprising a stator according to any of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472203.6A CN111585361A (en) | 2020-05-29 | 2020-05-29 | Stator and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472203.6A CN111585361A (en) | 2020-05-29 | 2020-05-29 | Stator and motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111585361A true CN111585361A (en) | 2020-08-25 |
Family
ID=72119675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010472203.6A Pending CN111585361A (en) | 2020-05-29 | 2020-05-29 | Stator and motor with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111585361A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154837A (en) * | 2006-09-08 | 2008-04-02 | 三洋电机株式会社 | Motor including a teeth section and a yoke section which are formed of mutually independent configuration members |
| CN104836351A (en) * | 2014-02-10 | 2015-08-12 | 山洋电气株式会社 | Stator core and permanent magnet motor |
| CN106329747A (en) * | 2016-10-20 | 2017-01-11 | 广东美的环境电器制造有限公司 | Stator for single-phase DC motors for fans, single-phase DC motors and fans |
| CN107251370A (en) * | 2015-05-07 | 2017-10-13 | 三菱电机株式会社 | Electric rotating machine and its manufacture method |
| CN107769404A (en) * | 2017-11-27 | 2018-03-06 | 广东美的环境电器制造有限公司 | A stator, a motor and a household appliance |
-
2020
- 2020-05-29 CN CN202010472203.6A patent/CN111585361A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154837A (en) * | 2006-09-08 | 2008-04-02 | 三洋电机株式会社 | Motor including a teeth section and a yoke section which are formed of mutually independent configuration members |
| CN104836351A (en) * | 2014-02-10 | 2015-08-12 | 山洋电气株式会社 | Stator core and permanent magnet motor |
| CN107251370A (en) * | 2015-05-07 | 2017-10-13 | 三菱电机株式会社 | Electric rotating machine and its manufacture method |
| CN106329747A (en) * | 2016-10-20 | 2017-01-11 | 广东美的环境电器制造有限公司 | Stator for single-phase DC motors for fans, single-phase DC motors and fans |
| CN107769404A (en) * | 2017-11-27 | 2018-03-06 | 广东美的环境电器制造有限公司 | A stator, a motor and a household appliance |
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Application publication date: 20200825 |
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