CN106130204B - Motor, stator core and stator punching sheet thereof - Google Patents
Motor, stator core and stator punching sheet thereof Download PDFInfo
- Publication number
- CN106130204B CN106130204B CN201610579612.XA CN201610579612A CN106130204B CN 106130204 B CN106130204 B CN 106130204B CN 201610579612 A CN201610579612 A CN 201610579612A CN 106130204 B CN106130204 B CN 106130204B
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- stator
- curved surfaces
- tooth
- rotor
- punching
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- 238000004080 punching Methods 0.000 title claims abstract description 84
- 230000007704 transition Effects 0.000 claims description 5
- 238000003475 lamination Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000004907 flux Effects 0.000 abstract description 27
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 29
- 210000000515 tooth Anatomy 0.000 description 21
- 229910052742 iron Inorganic materials 0.000 description 13
- 230000005611 electricity Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 210000003781 tooth socket Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a stator punching sheet which comprises a punching sheet body, wherein the punching sheet body is provided with a hollow through hole for mounting a rotor of a motor; a plurality of stator teeth are uniformly distributed on the inner surface of the punching sheet body along the circumferential direction of the stator punching sheet, and each stator tooth extends along the radial direction of the stator punching sheet; the surface of the stator tooth facing the through hole is an arc-shaped surface, and the arc-shaped surface faces away from the through hole and is sunken. After the rotor is installed in the through-hole of stator punching, the stator tooth that has the arc surface can increase the length of the air gap between stator core and the rotor, and then increases the effective air gap length when the motor moves for the air gap flux density high frequency harmonic content of motor has certain reduction, improves the efficiency that the electromagnetic power conversion improves the motor promptly, and then reduces the stator core loss, and the noise reduction. The invention also provides a motor and a stator core thereof.
Description
Technical field
The present invention relates to motor device technical fields, more particularly to a kind of motor, stator core and its stator punching.
Background technique
With market development, invariable frequency compressor motor steps up efficient requirement.From design of electrical motor angle
From, the size of stator cogging torque will will affect the harmonic content and core loss of air gap flux density.Currently, single-phase fixed frequency electricity
The improved efficiency amplitude of machine is difficult to realize the promotion of a point or more, analytical plan hair when considering specification and cost substantially
Existing conventional single-phase determines frequency electric machine iron core, and air gap flux density harmonic content is bigger in determined circumstances, and tooth socket harmonic wave occupies mainly
Factor, and then will have a direct impact on the core loss and noise of motor.
Summary of the invention
Based on this, it is necessary to single-phase determine frequency electric machine iron core air gap flux density harmonic content in determined circumstances for current
Bigger problem, the stator punching that a kind of air gap flux density harmonic content can reduce motor is provided, reduces iron loss, simultaneously also
Provide a kind of stator core containing said stator punching, and the motor containing said stator iron core.
Above-mentioned purpose is achieved through the following technical solutions:
A kind of stator punching, including punching ontology, the punching ontology have the hollow of the rotor for installing motor
Through-hole；
On the inner surface of the punching ontology, multiple stators are evenly distributed with along the circumferential direction of the stator punching
Tooth, each stator tooth extend along the radial direction of the stator punching；
The surface of the stator tooth towards the through hole is curved surfaces, and the curved surfaces are directed away from described lead to
It is recessed at hole.
The arc radius of the curved surfaces is less than the radius of the rotor in one of the embodiments,.
The stator tooth has tooth crest and the tooth root relative to tooth crest setting in one of the embodiments,
Portion；
The root portion is arranged close to the through hole, the tooth crest far from the through-hole；
The curved surfaces are located at the root portion towards on the surface of the through hole；
The root portion has first end and the second end relative to the first end；
The curved surfaces extend to the second end from the first end.
The quantity of the curved surfaces is one in one of the embodiments, and the curved surfaces are about the stator
The central axes of tooth are symmetrical.
In one of the embodiments, the arc radius of the curved surfaces be 0.35 times of radius of the rotor~
0.8 times.
It is two continuous arc tables that the root portion, which is located at the surface of the through hole, in one of the embodiments,
The arc radius in face, two continuous curved surfaces is equal；
And two continuous curved surfaces are symmetrical about the central axes of the stator tooth.
In one of the embodiments, the arc radius of the curved surfaces be 0.15 times of radius of the rotor~
0.35 times.
Curved surfaces are respectively provided on each stator tooth in one of the embodiments,.
Curved surfaces are set on the stator tooth of part in one of the embodiments,；
And the stator tooth with curved surfaces is symmetrical arranged about the diameter line of the stator punching.
Arc transition between the outer peripheral surface of the root portion and the curved surfaces in one of the embodiments,.
The arc radius of the curved surfaces is 0.05mm~0.5mm in one of the embodiments,.
A kind of stator core is further related to, as multiple stator punchings stacking laminations as described in any of the above-described technical characteristic
At.
A kind of motor is further related to, the stator core including rotor and as described in above-mentioned technical characteristic；The rotor is installed on
In the stator core.
The beneficial effects of the present invention are:
Motor, stator core and its stator punching of the invention, structure design advantages of simple, by the end for optimizing stator tooth
The shape in portion, so that the surface of the end of stator tooth is curved surfaces.After rotor is installed in the through-hole of stator punching, there is arc
The stator tooth on shape surface can increase the length of the air gap between stator core and rotor, and then effective when increase motor operation
Gas length improves electromagnetic power conversion and improves electricity so that the air gap flux density high-frequency harmonic content of motor has certain reduction
The efficiency of machine, and then stator core loss is reduced, and reduce noise to a certain extent.Stator punching of the invention passes through optimization
The structure of stator tooth increases the arc-shaped surface in the end of stator tooth by the length of air gap, and then reaches reduction loss and reduce humorous
The purpose of wave content.
Detailed description of the invention
Fig. 1 is the main view of the stator punching of one embodiment of the invention；
Fig. 2 is the partial enlarged view at A shown in FIG. 1；
Fig. 3 is the schematic diagram that stator punching of the invention carries out air gap flux density frequency analysis using finite element；
Fig. 4 is the schematic diagram that current stator punching carries out air gap flux density frequency analysis using finite element；
Fig. 5 is that stator punching of the invention and current stator punching are illustrated using the comparison that finite element carries out core loss
Figure；
Wherein:
100- stator punching；
110- punching ontology；
120- through-hole；
130- stator tooth；
131- tooth crest；
132- root portion；
1321- curved surfaces；1322- first end；1323- second end；
133- tooth body.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, by the following examples, it and combines attached
Figure, is further elaborated motor of the invention, stator core and its stator punching.It should be appreciated that described herein
Specific examples are only used to explain the present invention, is not intended to limit the present invention.
Referring to Fig. 1 to Fig. 2, the present invention provides a kind of stator punching 100, multiple 100 stack layer pressure energies of stator punching
Stator core is enough formed, and is matched with rotor.Stator punching 100 of the invention can by the structure of optimization stator tooth 130
Increase the gas length between stator core and rotor, air gap flux density harmonic content is effectively ensured, then reduces stator iron loss, mention
High electric efficiency.
In the present invention, stator punching 100 includes punching ontology 110, and punching ontology 110 has for installing turning for motor
The hollow through-hole 120 of son.On the inner surface of punching ontology 110, it is evenly distributed with along the circumferential direction of stator punching 100 more
A stator tooth 130 forms a tooth socket between two adjacent stator tooths 130, and each stator tooth 130 is along stator punching 100
Radial direction extends.Stator tooth 130 is curved surfaces 1321 towards the surface at through-hole 120, and curved surfaces 1321 are towards remote
It is recessed from through-hole 120.
That is, the surface of the end of stator tooth 130 is curved surfaces 1321, and the recess court of curved surfaces 1321
To through-hole 120.In this way, after rotor is installed in the through-hole 120 of stator punching 100, the central regions of curved surfaces 1321 is to turning
The distance between outer surface of son is greater than the edge to the distance between the outer surface of rotor of curved surfaces 1321.With arc table
The stator tooth 130 in face 1321 can increase the gas length of stator punching 100 Yu rotor, and then air gap when increase motor operation
Effective length improves electromagnetic power and improves electric efficiency, reduces iron loss.
Currently, the stator tooth of stator core is parallel teeth, i.e. the surface of the end of stator tooth and the outer surface of rotor is equal
Row.In this case, air gap flux density harmonic content is bigger, and tooth socket harmonic wave occupies principal element, and then will have a direct impact on electricity
The core loss and noise of machine.Therefore, stator punching 100 of the invention passes through the shape of optimization stator tooth 130, so that stator tooth
The surface of 130 end is curved surfaces 1321, i.e., the stator tooth 130 of stator punching 100 of the invention is arc-shaped gear.Pass through tool
There is the stator tooth 130 of curved surfaces 1321 to increase the gas length between stator punching 100 and rotor, then increases air gap magnetic
Amount improves electric efficiency.
Stator punching 100 of the invention passes through the shape of the end of optimization stator tooth 130, so that the end of stator tooth 130
Surface be curved surfaces 1321.After rotor is installed in the through-hole 120 of stator punching 100, determine with curved surfaces 1321
Sub- tooth 130 can increase the length of the air gap between stator core and rotor, and then effective air gap when increase motor operation is long
Degree improves the effect that electromagnetic power conversion improves motor so that the air gap flux density high-frequency harmonic content of motor has certain reduction
Rate, and then stator core loss is reduced, and reduce noise to a certain extent.Stator punching 100 of the invention is fixed by optimization
The structure of sub- tooth 130 increases the arc-shaped surface 1321 in the end of stator tooth 130 by the length of air gap, and then reaches reduction loss
With the purpose for reducing harmonic content.
As an embodiment, the arc radius of curved surfaces 1321 is less than the radius of rotor.That is, arc
The bending degree on surface 1321 be greater than rotor outer surface bending degree, in such manner, it is possible to make the end of stator tooth 130 to turn
The distance of the outer surface of son changes, and increases air gap degree, then increases magnetic flux, improves electromagnetic conversion efficiency, guarantees electricity
Engine efficiency.
As an embodiment, the root portion that stator tooth 130 has tooth crest 131, is arranged relative to tooth crest 131
132 and tooth connection at the top of 131 with the tooth body 133 of root portion 132.For root portion 132 at through-hole 120, tooth crest 131 is separate
Through-hole 120 is arranged.Curved surfaces 1321 are located at root portion 132 towards on the surface at through-hole 120.Further, root portion 132
With first end 1322 and relative to the second end 1323 of first end 1322.Curved surfaces 1321 extend to from first end 1322
Two ends 1323.Curved surfaces 1321 are arranged in stator punching 100 of the invention on the root portion 132 of stator tooth 130, to increase electricity
Air gap effective length when machine is run improves electromagnetic power conversion and improves electric efficiency.
The distance of first end 1322 to the outer surface of rotor is equal to second end 1323 to the distance of the outer surface of rotor, and
The distance of first end 1322 to the outer surface of rotor is less than the central region of curved surfaces 1321 between the outer surface of rotor
Distance can increase gas length in this way, air gap flux density harmonic content be effectively reduced, and then reduce iron loss.
Since stator punching 100 of the invention passes through the curved surfaces 1321 of the root portion 132 of stator tooth 130 to motor tooth
Slot torque has certain optimization function, to reduce high frequency time air gap flux density harmonic content.But consider actual process and nail punch
The slab organization of piece, arc radius of the promotion of electric efficiency not with the curved surfaces 1321 of the root portion 132 of stator tooth 130
Or hollow depth is always directly proportional.When the hollow depth of the curved surfaces 1321 of the root portion 132 of stator tooth 130 is excessive, then
It will lead to stator tooth 130 magnetic flux to reduce, influence electromagnetic conversion efficiency, while can also become smaller to groove height, and then lead
The technique production structural damage of stator punching 100 is caused to increase.
Therefore, stator punching 100 of the invention still uses original in order to avoid technique production structural damage increases
The height of the tooth socket of stator punching 100.Also, the curved surfaces 1321 on the stator tooth 130 of stator punching 100 of the invention
Quantity can be one, or two.It is described as follows:
In one embodiment of the present invention, the quantity of curved surfaces 1321 is one, and curved surfaces 1321 are about stator
The central axes of tooth 130 are symmetrical.Can guarantee in this way the curved surfaces 1321 of central axes two sides between the outer surface of rotor away from
From equal, and then guarantee gas length, air gap flux density harmonic content is effectively reduced, and then reduce iron loss.Further, arc table
The arc radius in face 1321 is 0.35 times~0.8 times of the radius of rotor.In such manner, it is possible to guarantee the indent journey of curved surfaces 1321
Degree avoids 1321 transition indent of curved surfaces, guarantees the magnetic flux of stator tooth 130, guarantees the efficiency of motor.
Stator punching 100 of the invention by cooperate radius for the rotor of 26mm for be illustrated.That is, rotor
Radius is 26mm, and the arc radius of corresponding curved surfaces 1321 is 10mm~20mm, preferably 10mm~13mm.Of the invention
In one embodiment, the quantity of the curved surfaces 1321 on stator tooth 130 on stator punching 100 is one, and curved surfaces
1321 arc radius is 10mm.It can guarantee gas length in this way, air gap flux density harmonic content be effectively reduced, and then reduce iron
Damage.
In other embodiments of the invention, it is two continuous arcs that root portion 132, which is located at the surface at through-hole 120,
The arc radius on surface 1321, two continuous curved surfaces 1321 is equal.And two continuous curved surfaces 1321 are about fixed
The central axes of sub- tooth 130 are symmetrical.The curved surfaces 1321 of central axes two sides can be guaranteed between the outer surface of rotor in this way
It is equidistant, and then guarantees gas length, air gap flux density harmonic content is effectively reduced, and then reduce iron loss.Further, arc
The arc radius on surface 1321 is 0.15 times~0.35 times of the radius of rotor.In such manner, it is possible to guarantee the interior of curved surfaces 1321
Recessed degree avoids 1321 transition indent of curved surfaces, guarantees the magnetic flux of stator tooth 130, guarantees the efficiency of motor.
Also, the intersection of two curved surfaces 1321 forms tip, and the distance of the outer surface at tip to rotor is greater than the
One end 1322 is at a distance from the outer surface of second end 1323 to rotor.Stator punching 100 of the invention is to cooperate radius for 26mm
Rotor for be illustrated.That is, the radius of rotor is 26mm, the arc radius of corresponding curved surfaces 1321 is
4mm~8mm, preferably 5mm.In another embodiment of the invention, the curved surfaces on the stator tooth 130 on stator punching 100
1321 quantity is two, and the arc radius of curved surfaces 1321 is 5mm.It can guarantee gas length in this way, effectively drop
Low air gap flux density harmonic content, and then reduce iron loss.
It should be noted that the quantity of the curved surfaces 1321 of the stator tooth 130 of stator punching 100 of the invention is one
Or at two, can solve stator punching 100 of the invention air gap flux density harmonic content it is larger so that influence iron loss and
The problem of noise.Since every two curved surfaces 1321 are crossed to form tip, still, the quantity of curved surfaces 1321 be three and
At three or more, the quantity at tip just be will increase, and can be deteriorated cogging torque, and then increase air gap flux density harmonic content, be influenced electricity
The core loss and noise of machine.Therefore, the quantity of the curved surfaces 1321 of the stator tooth 130 of stator punching 100 of the invention is
One or two when can guarantee that air gap flux density harmonic content is lower, and then guarantee motor iron loss, reduce noise.
As an embodiment, curved surfaces 1321 are respectively provided on each stator tooth 130.That is, stator rushes
Curved surfaces 1321 are all had on piece 100 on all stator tooths 130, air gap when can guarantee motor operation in this way it is effective
Length improves electromagnetic power conversion and improves electric efficiency, reduces core loss.
Certainly, in other embodiments of the invention, curved surfaces 1321 are set, and have on partial stator tooth 130
The stator tooth 130 of curved surfaces 1321 is symmetrical arranged about the diameter line of stator punching 100.That is, if stator punching 100
When for 24 slot structure, curved surfaces 1321 can be set on the wherein stator tooth 130 of three or more, in these arc tables
Curved surfaces 1321 are also provided on the symmetrically arranged stator tooth 130 of stator tooth 130 in face 1321, to guarantee gas when motor operation
The effective length of gap improves electromagnetic power conversion and improves electric efficiency, reduces core loss.
As an embodiment, arc transition between the outer peripheral surface of root portion 132 and curved surfaces 1321.Such energy
It is enough to increase gas length to a certain extent, optimize the structure of tooth socket, so that the torque of tooth socket reduces, and then reduces iron loss and subtract
Few air gap flux density harmonic content.Further, the arc radius of curved surfaces is 0.05mm~0.5mm.
Also, referring to Fig. 3 to Fig. 5, have to the stator punching 100 with curved surfaces 1321 of the invention with current
The stator punching of parallel teeth carries out finite element analysis, carries out the finite element analysis of air gap flux density harmonic wave and core loss finite element respectively
Comparison.Remember that the stator tooth 130 in the application is arc-shaped gear, current stator tooth is parallel rule.Comparison diagram 3 and Fig. 4, can be obvious
Find out, stator punching 100 of the invention can reduce air gap flux density harmonic wave by curved surfaces 1321；It can be obvious from Fig. 5
Find out, stator punching 100 of the invention can reduce iron loss by curved surfaces 1321.
The present invention also provides a kind of stator cores, by the stacking of stator punching 100 lamination in multiple above-described embodiments
At.Stator core of the invention guarantees gas length by the stator punching 100 with curved surfaces 1321, reduces air gap magnetic
Close harmonic content, then reduces iron loss.
The present invention also provides a kind of motors, and including the stator core in rotor and above-described embodiment, rotor is installed on fixed
In sub- iron core.Motor of the invention guarantees motor by the stator punching 100 with curved surfaces 1321 in stator core
Air gap effective length when operation improves electromagnetic power conversion and improves electric efficiency, reduces core loss, reduce noise.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of stator punching, which is characterized in that including punching ontology (110), the punching ontology (110) has for installing
The hollow through-hole (120) of the rotor of motor；
On the inner surface of the punching ontology (110), it is evenly distributed with along the circumferential direction of the stator punching (100) multiple
Stator tooth (130), each stator tooth (130) extend along the radial direction of the stator punching (100)；
The stator tooth (130) towards the surface at the through-hole (120) be curved surfaces (1321), and curved surfaces
(1321) it is directed away from the through-hole (120) and is recessed；
The stator tooth (130) has tooth crest (131) and the root portion (132) relative to the tooth crest (131) setting；Institute
Root portion (132) are stated at the through-hole (120), the tooth crest (131) is arranged far from the through-hole (120)；The arc
Shape surface (1321) is located at the root portion (132) towards on the surface at the through-hole (120)；Root portion (132) tool
There are first end (1322) and the second end (1323) relative to the first end (1322)；
It is two continuous curved surfaces (1321), two companies that the root portion (132), which is located at the surface at the through-hole (120),
The arc radius of the continuous curved surfaces (1321) is equal；And two continuous curved surfaces (1321) are about described fixed
The central axes of sub- tooth (130) are symmetrical；
The intersection of two curved surfaces (1321) forms tip, and the distance of the tip to the outer surface of the rotor is big
At a distance from the outer surface of the first end (1322) with the second end (1323) to the rotor.
2. stator punching according to claim 1, which is characterized in that the arc radius of the curved surfaces (1321) is less than
The radius of the rotor.
3. stator punching according to claim 1, which is characterized in that the arc radius of the curved surfaces (1321) is institute
0.15 times~0.35 times for stating the radius of rotor.
4. stator punching according to claim 1, which is characterized in that be respectively provided with arc on each stator tooth (130)
Surface (1321).
5. stator punching according to claim 1, which is characterized in that arc table is arranged on the part stator tooth (130)
Face (1321)；
And the stator tooth (130) with curved surfaces (1321) is symmetrically set about the diameter line of the stator punching (100)
It sets.
6. stator punching according to claim 1, which is characterized in that the outer peripheral surface and the arc of the root portion (132)
Arc transition between shape surface (1321).
7. stator punching according to claim 4, which is characterized in that the arc radius of the curved surfaces (1321) is
0.05mm~0.5mm.
8. a kind of stator core, which is characterized in that by multiple stator punching (100) heaps as described in any one of claim 1 to 7
Lamination is pressed.
9. a kind of motor, which is characterized in that including rotor and stator core as claimed in claim 8；The rotor is installed on
In the stator core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579612.XA CN106130204B (en) | 2016-07-21 | 2016-07-21 | Motor, stator core and stator punching sheet thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610579612.XA CN106130204B (en) | 2016-07-21 | 2016-07-21 | Motor, stator core and stator punching sheet thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106130204A CN106130204A (en) | 2016-11-16 |
| CN106130204B true CN106130204B (en) | 2019-09-03 |
Family
ID=57290517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610579612.XA Active CN106130204B (en) | 2016-07-21 | 2016-07-21 | Motor, stator core and stator punching sheet thereof |
Country Status (1)
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| CN (1) | CN106130204B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107994689A (en) * | 2018-01-18 | 2018-05-04 | 江苏环晟电机有限公司 | A kind of stator piece with direct current generator non-uniform gap |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326697A (en) * | 2005-12-09 | 2008-12-17 | 丰田自动车株式会社 | Rotating electrical machines |
| JP2013027240A (en) * | 2011-07-25 | 2013-02-04 | Daikin Ind Ltd | Rotary electric machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH099532A (en) * | 1995-06-16 | 1997-01-10 | Hitachi Ltd | Motor |
| JP2000253603A (en) * | 1999-03-04 | 2000-09-14 | Matsushita Seiko Co Ltd | Stator core for induction motor |
| CN105262246A (en) * | 2015-10-10 | 2016-01-20 | 常州大学怀德学院 | Long strip-shaped silicon steel punching sheet of brushless DC motor and stator comprising same |
| CN205945259U (en) * | 2016-07-21 | 2017-02-08 | 珠海凌达压缩机有限公司 | Motor, stator core and stator punching sheet thereof |
-
2016
- 2016-07-21 CN CN201610579612.XA patent/CN106130204B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326697A (en) * | 2005-12-09 | 2008-12-17 | 丰田自动车株式会社 | Rotating electrical machines |
| JP2013027240A (en) * | 2011-07-25 | 2013-02-04 | Daikin Ind Ltd | Rotary electric machine |
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| CN106130204A (en) | 2016-11-16 |
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