CN105656227A - Stator iron core and motor - Google Patents
Stator iron core and motor Download PDFInfo
- Publication number
- CN105656227A CN105656227A CN201610087406.7A CN201610087406A CN105656227A CN 105656227 A CN105656227 A CN 105656227A CN 201610087406 A CN201610087406 A CN 201610087406A CN 105656227 A CN105656227 A CN 105656227A
- Authority
- CN
- China
- Prior art keywords
- tooth
- iron core
- stator core
- teeth
- teeth portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/08—Forming windings by laying conductors into or around core parts
- H02K15/085—Forming windings by laying conductors into or around core parts by laying conductors into slotted stators
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a stator iron core and a motor. The stator iron core comprises a tooth part iron core and a yoke part iron core, wherein the tooth part iron core comprises a tooth part and first teeth which are arranged on the tooth part and extend outwards along the radial direction of the tooth part, the yoke part iron core comprises a yoke part and second teeth which are arranged on the yoke part and extend inwards along the radial direction of the yoke part, and the first teeth and the second teeth are staggered to each other on the circumference. Partial teeth are arranged on the yoke part iron core, so that the distribution density of the teeth on the tooth part iron core and the yoke part iron core is decreased, the design difficulty and the machining difficulty of a stamping die are alleviated, the stress concentration at the junction of tooth roots is avoided, and the mechanical strength is guaranteed.
Description
Technical field
The present invention relates to machine field, in particular to a kind of stator core and motor.
Background technology
For the synchronous motor that precision controls, the cogging torque parameter request of motor is higher, and reduce cogging torque and be conducive to improving the control accuracy of motor. In prior art, it is generally adopted and stator core is designed as the mode without notch to reduce motor cogging torque. For solving the coiling problem without notch stator core, stator core is designed as by prior art tooth yoke complete separated type anti-bending. Specifically, as shown in Figures 1 to 3, wherein, Fig. 1 is the structural representation of existing teeth portion iron core 20, and tooth 22 is arranged in teeth portion 21, the structural representation of Fig. 2 existing yoke portion iron core 30, and namely yoke portion 31 is separately separated, and Fig. 3 is the two assembling structural representation. Program stator core, without notch, can effectively reduce cogging torque.
The design of tooth root and tooth root connecting portion (in Fig. 1 label A place) is should be specifically noted that during the application program. For reducing leakage field, namely magnetic field line is by tooth root and tooth root connecting portion by enamel-covered wire 40 winding on tooth, and tooth root and tooth root connecting portion should not design wide, ensure minimum requirement of mechanical strength simultaneously.
Program application on the stator of the more number of teeth in the design constraints of tooth root and tooth root connecting portion. The stator number of teeth is more many, arranges more intensive, and tooth root is more little with the region of tooth root connecting portion, and the sudden change of connecting portion shape seriously even forms wedge angle, and stress is concentrated, and mechanical strength sharply weakens. For ensureing minimum mechanical strength, connecting portion need to be widened, and widen connecting portion and can increase leakage field, affect the overall performance of motor.
It addition, for the tooth yoke separate type stator core of the more number of teeth, teeth portion 21 is arranged intensive, the design of core stamping mould and difficulty of processing are high, and punching product is yielding.
In view of the deficiency of above-mentioned two aspects, tooth yoke isolating construction is difficult on the stator that the number of teeth is more should for reducing cogging torque.
Summary of the invention
It is desirable to provide a kind of stator core that can reduce difficulty of processing and motor.
The invention provides a kind of stator core, including teeth portion iron core and yoke portion iron core, teeth portion iron core includes teeth portion and is arranged in teeth portion and along first tooth extended radially outwardly of teeth portion, yoke portion iron core includes yoke portion and the second tooth being arranged in yoke portion and extending radially inwardly along yoke portion, wherein, the first tooth and the second tooth circumferentially stagger setting mutually.
Further, the first tooth and the second tooth are circumferentially uniformly distributed and spaced setting.
Further, yoke portion is provided with first location division corresponding with the first tooth.
Further, the first location division is detent, the first tooth and detent interference fit.
Further, teeth portion is provided with second auxiliary section corresponding with the second tooth.
Further, the second auxiliary section is for coordinating boss, and the second tooth abuts cooperation with coordinating boss.
Further, the sum of the first tooth and the second tooth is no less than 12.
Further, teeth portion iron core includes multiple teeth portion core stamping, and wherein, adjacent two teeth portion core stampings are superimposed with each other by detaining point; Yoke portion iron core includes multiple yoke portions core stamping, and wherein, adjacent two yoke portion core stampings are superimposed with each other by detaining point.
Present invention also offers a kind of motor, including aforesaid stator core.
Stator core according to the present invention and motor, by arranging teeth portion iron core and yoke portion iron core, and teeth portion iron core includes teeth portion and is arranged in teeth portion and along first tooth extended radially outwardly of teeth portion, yoke portion iron core includes yoke portion and the second tooth being arranged in yoke portion and extending radially inwardly along yoke portion, wherein, the first tooth and the second tooth circumferentially stagger setting mutually. Namely part tooth is arranged on yoke portion iron core by the present invention, thus the arrangement density of the tooth reduced on teeth portion iron core and yoke portion iron core, reduce design difficulty and the difficulty of processing of diel, avoid the junction stress concentration of tooth root and tooth root, it is ensured that mechanical strength simultaneously.
Accompanying drawing explanation
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention. In the accompanying drawings:
Fig. 1 is the structural representation of the teeth portion iron core of stator core in prior art;
Fig. 2 is the structural representation of the yoke portion iron core of stator core in prior art;
Fig. 3 is the assembling structural representation of stator core in prior art;
Fig. 4 is the structural representation of the teeth portion iron core of the stator core according to the present invention;
Fig. 5 is the structural representation of the yoke portion iron core of the stator core according to the present invention;
Fig. 6 is the assembling structural representation of the stator core according to the present invention;
Description of reference numerals:
20, teeth portion ferrum core; 21, teeth portion; 22, the first tooth; 23, boss is coordinated; 30, yoke portion ferrum core; 31, yoke portion; 32, the second tooth; 33, detent; 40, enamel-covered wire.
Detailed description of the invention
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
As shown in Figs. 4-6, stator core according to the present invention, including teeth portion iron core 20 and yoke portion iron core 30, teeth portion iron core 20 includes teeth portion 21 and is arranged in teeth portion 21 and along first tooth 22 extended radially outwardly of teeth portion 21, yoke portion iron core 30 includes yoke portion 31 and the second tooth 32 being arranged in yoke portion 31 and extending radially inwardly along yoke portion 31, wherein, the first tooth 22 and the second tooth 32 circumferentially stagger setting mutually. Part tooth is arranged on yoke portion iron core 30 by the present invention, thus the arrangement density of the tooth reduced on teeth portion iron core 20 and yoke portion iron core 30, reduce design difficulty and the difficulty of processing of diel, avoid the junction stress concentration of tooth root and tooth root, it is ensured that mechanical strength simultaneously. It addition, in the present invention, adopt the mode that teeth portion iron core 20 and yoke portion iron core 30 are separated from each other, it is ensured that teeth portion iron core 20 inner circle is closed without notch such that it is able to effectively reduce cogging torque, improve the control accuracy of motor.
Specifically, in conjunction with Fig. 4 to shown in 6, in a preferred embodiment of the invention, the first tooth 22 and the second tooth 32 are circumferentially uniformly distributed and spaced setting. Namely it is numbered the tooth (in Fig. 4 tooth 2,4,6,8,10,12) of even number be connected with tooth root connecting portion by tooth root and be uniformly distributed formation single teeth portion iron core 20 punching in a circumferential direction, button point, some teeth portion iron core 20 punchings is had to overlap together formation teeth portion iron core 20 in tooth upper punch. The tooth (in Fig. 5 tooth 1,3,5,7,9,11) being numbered odd number is connected with yoke portion 31 and is uniformly distributed formation single yoke portion iron core 30 punching in a circumferential direction, button point, iron core 30 punching of some yokes portion is had to overlap together formation yoke portion iron core 30 in tooth upper punch. During assembling, the tooth being numbered even number and the tooth being numbered odd number mutually stagger and are uniformly arranged, and form the equally distributed stator core of tooth as shown in Figure 6.
Further, in conjunction with, shown in Fig. 5 and Fig. 6, yoke portion 31 being provided with first location division corresponding with the first tooth 22, thus ensureing the positioning precision of yoke portion iron core 30 and teeth portion iron core 20, improve assembly reliability. More specifically, first location division is detent 33, the width of detent 33 and the width of the first tooth 22 are identical or smaller, the degree of depth of detent 33 is designed according to stator core diameter, by detent 33 and the first tooth 22 interference fit, complete the splicing of stator core, it is ensured that reliability and positioning precision.
Correspondingly, teeth portion 21 is provided with second auxiliary section corresponding with the second tooth 32, it is ensured that teeth portion 21 is docked completely with the second tooth 32. Specifically, in conjunction with shown in Fig. 4 and Fig. 6, the second auxiliary section is for coordinating boss 23, thus the thickness of the coupling part improved between adjacent two the first teeth 22, it is ensured that structural strength. Preferably, coordinate width and the facewidth lines of boss 23, coordinate boss 23 height to be designed according to tooth root connecting portion width. Second tooth 32 with coordinate boss 23 abuts cooperation, it is ensured that after assembling, cooperation boss 23 and the second tooth 32 fully in contact with. In other embodiments of the invention, under ensureing structural strength situation, the second auxiliary section is it can also be provided that detent 33, and the first auxiliary section is set to detent 33 or coordinates boss 23 etc.
Preferably, in the present invention, the sum of the first tooth 22 and the second tooth 32 is no less than 12, thus improving the control accuracy of motor. And the sum of tooth is more many, compared to existing technology, part tooth is arranged on the scheme on yoke portion iron core 30 by the present invention, more can embody advantage reducing on difficulty of processing.
In the pre-assembly, need stator core coiling, along with structure is improved, design the stator winding mould corresponding with the stator core of the present invention, skeleton is set on winding former, enamel-covered wire 40 is wound on skeleton, then the skeleton being wound with enamel-covered wire 40 is set on the tooth of teeth portion iron core 20 and yoke portion iron core 30. Finally teeth portion iron core 20 is press fit in yoke portion iron core 30, forms stator core.
In other embodiments of the invention, the distribution of tooth is not limited to symmetrical structure spaced apart, tooth can be numbered the tooth of 1,2,5,6,9,10 be connected with yoke portion 31, residual tooth is connected with teeth portion 21, compare optimum embodiment, the design of the program and difficulty of processing can increase, but compared to existing technology, still have obvious advantage. The stator number of teeth is not limited to 12 teeth, and for the more stator of the number of teeth, the program compares existing tooth yoke isolating construction more advantage;Teeth portion 21 is not limited to even number, and for the stator of odd number gear, yoke portion iron core 30 or teeth portion iron core 20 have adjacent a pair tooth, and its design optimum embodiment compared with difficulty of processing slightly increases, but compared to existing technology, still has obvious advantage.
Present invention also offers a kind of motor, including aforesaid stator core such that it is able to effectively reduce difficulty of processing, improve control accuracy.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
Part tooth is arranged on yoke portion iron core 30 by the present invention, thus the arrangement density of the tooth reduced on teeth portion iron core 20 and yoke portion iron core 30, reduce design difficulty and the difficulty of processing of diel, avoid the junction stress concentration of tooth root and tooth root, it is ensured that mechanical strength simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (9)
1. a stator core, including teeth portion iron core (20) and yoke portion iron core (30), it is characterized in that, described teeth portion iron core (20) includes teeth portion (21) and is arranged on that described teeth portion (21) is upper and the first tooth (22) extended radially outwardly along described teeth portion (21), described yoke portion iron core (30) includes yoke portion (31) and is arranged on the second tooth (32) that described yoke portion (31) is upper and extends radially inwardly along described yoke portion (31), wherein, described first tooth (22) and described second tooth (32) circumferentially stagger setting mutually.
2. stator core according to claim 1, it is characterised in that
Described first tooth (22) and described second tooth (32) are circumferentially uniformly distributed and spaced setting.
3. stator core according to claim 1, it is characterised in that
Described yoke portion (31) is provided with first location division corresponding with described first tooth (22).
4. stator core according to claim 3, it is characterised in that
Described first location division is detent (33), described first tooth (22) and described detent (33) interference fit.
5. stator core according to any one of claim 1 to 4, it is characterised in that
Described teeth portion (21) is provided with second auxiliary section corresponding with described second tooth (32).
6. stator core according to claim 5, it is characterised in that
Described second auxiliary section is for coordinating boss (23), and described second tooth (32) abuts cooperation with described cooperation boss (23).
7. stator core according to claim 1, it is characterised in that
The sum of described first tooth (22) and described second tooth (32) is no less than 12.
8. stator core according to claim 1, it is characterised in that
Described teeth portion iron core (20) includes the punching of multiple teeth portion iron core (20), and wherein, the punching of adjacent two described teeth portion iron cores (20) is superimposed with each other by detaining point;
Described yoke portion iron core (30) includes iron core (30) punching of multiple yoke portions, and wherein, adjacent two described yoke portion iron core (30) punchings are superimposed with each other by detaining point.
9. a motor, including stator core, it is characterised in that described stator core includes the stator core according to any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087406.7A CN105656227A (en) | 2016-02-16 | 2016-02-16 | Stator iron core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610087406.7A CN105656227A (en) | 2016-02-16 | 2016-02-16 | Stator iron core and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105656227A true CN105656227A (en) | 2016-06-08 |
Family
ID=56488446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610087406.7A Pending CN105656227A (en) | 2016-02-16 | 2016-02-16 | Stator iron core and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105656227A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451830A (en) * | 2016-11-09 | 2017-02-22 | 南京康尼电子科技有限公司 | Split type permanent magnet brushless direct-current motor stator and mounting method thereof |
| CN110034617A (en) * | 2019-04-30 | 2019-07-19 | 博格华纳汽车零部件（武汉）有限公司 | Combined-stator iron core |
| CN112003390A (en) * | 2020-08-19 | 2020-11-27 | 临清市辉博机械有限公司 | Motor stator core |
| WO2024012150A1 (en) * | 2022-07-13 | 2024-01-18 | 美的威灵电机技术（上海）有限公司 | Stator assembly, electric motor, and servo system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10309048A (en) * | 1997-04-30 | 1998-11-17 | Toshiba Corp | Stator for motor and its manufacture |
| CN202050299U (en) * | 2011-05-12 | 2011-11-23 | 配天(安徽)电子技术有限公司 | Stator core and permanent magnet motor |
| CN102377261A (en) * | 2011-10-25 | 2012-03-14 | 珠海格力电器股份有限公司 | Modular motor stator |
| US20130200746A1 (en) * | 2009-11-27 | 2013-08-08 | Protean Electric Limited | Coil tooth assembly |
-
2016
- 2016-02-16 CN CN201610087406.7A patent/CN105656227A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10309048A (en) * | 1997-04-30 | 1998-11-17 | Toshiba Corp | Stator for motor and its manufacture |
| US20130200746A1 (en) * | 2009-11-27 | 2013-08-08 | Protean Electric Limited | Coil tooth assembly |
| CN202050299U (en) * | 2011-05-12 | 2011-11-23 | 配天(安徽)电子技术有限公司 | Stator core and permanent magnet motor |
| CN102377261A (en) * | 2011-10-25 | 2012-03-14 | 珠海格力电器股份有限公司 | Modular motor stator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451830A (en) * | 2016-11-09 | 2017-02-22 | 南京康尼电子科技有限公司 | Split type permanent magnet brushless direct-current motor stator and mounting method thereof |
| CN110034617A (en) * | 2019-04-30 | 2019-07-19 | 博格华纳汽车零部件（武汉）有限公司 | Combined-stator iron core |
| CN112003390A (en) * | 2020-08-19 | 2020-11-27 | 临清市辉博机械有限公司 | Motor stator core |
| WO2024012150A1 (en) * | 2022-07-13 | 2024-01-18 | 美的威灵电机技术（上海）有限公司 | Stator assembly, electric motor, and servo system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160608 |