CN110492626A - The assemble method of rotating electric machine and rotating electric machine - Google Patents
The assemble method of rotating electric machine and rotating electric machine Download PDFInfo
- Publication number
- CN110492626A CN110492626A CN201910396930.6A CN201910396930A CN110492626A CN 110492626 A CN110492626 A CN 110492626A CN 201910396930 A CN201910396930 A CN 201910396930A CN 110492626 A CN110492626 A CN 110492626A
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- stator core
- laminated body
- electric machine
- rotating electric
- core laminated
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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
-
- 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
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The assemble method of rotating electric machine and rotating electric machine that stator vibration displacement can be reduced is provided.Stator (120) has the first stator core laminated body (121) made of the steel plate of stacking multi-disc the same shape and the second stator core laminated body (122) made of the steel plate of multi-disc the same shape is laminated.First stator core laminated body (121) and the second stator core laminated body (122) are composed in a manner of point symmetry by the stator core of the same shape, and the two is integrally formed and becomes two-side supporting construction.
Description
Technical field
The present invention relates to rotating electric machine and the assemble methods of rotating electric machine.
Background technique
The vehicle driving apparatus of hybrid vehicle etc. is set side by side with motor/generator (rotating electric machine), electronic
Machine/generator is respectively provided with rotary shaft, and is configured to mutual rotary shaft and is coaxially overlapped.Motor has non-rotating side
The rotor of stator and rotary side.
Describe stator in patent document 1, which has: stator core has cricoid magnetic yoke and from described
The inner circumferential of magnetic yoke is towards multiple teeth outstanding on the inside of radial direction；Coil is wound in around the tooth；And magnetic substance,
It is set to the radius with a part of the coil from the axial end face of tooth outside coil end portion outstanding in the axial direction
On the outside of direction between the periphery of the magnetic yoke, and circumferentially prolonged in a manner of forming magnetic circuit between a tooth and another tooth
It stretches.
Fig. 6 is the sectional view of motor 1 documented by patent document 1.
Motor 1 is for example mounted in the slim motor of hybrid electric vehicle (vehicle).
As shown in fig. 6, motor 1 has rotor 11 and is configured at the cricoid stator 12 of the radial outside of rotor 11.Turn
Son 11 is opposed radially with stator 12, is provided with a little gap (air gap G) radially.
Rotor 11 has rotor core 16 and rotor core 16 is avoided to be displaced to one end direction of rotary shaft (illustration omitted)
End plates 17.
Stator 12 have multiple segmentation iron cores annularly configure made of stator core 13 be wound in stator core 13
Coil 14.
Stator core 13 is kept by cylindric stator support 15.Offering in the peripheral part 12a of stator core 13 will be fixed
Sub- iron core 13 axially perforative through hole 12b.Make the axle portion for installing bolt B through through hole 12b, and is screwed
In the bolt insertion hole (illustration omitted) formed on shell 18, stator 12 is thus installed on shell 18.
As shown in fig. 6, the axle portion of installation bolt B using the bolt insertion hole (illustration omitted) of stator 12 and shell 18 edge
Front-rear direction fastening, so that stator 12 is fixed on shell 18.Stator core 13, which becomes, is mounted bolt B bearing stator core
The cantilevered construction of 13 peripheral part 12a.
Citation
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2017-139873 bulletin
Summary of the invention
Subject to be solved by the invention
However, the cantilevered construction that the peripheral part 12a that stator documented by patent document 1 is stator core 13 is supported, because
There is the project that physical deflection amount is big compared with two-side supporting construction in this.In addition, there are following for the stator core 13 of cantilevered construction
Stator vibration mode, due to resonance part motor sound (motor sound), carrier wave sound (carrier sound) etc. become problem.
Fig. 7 and Fig. 8 is the figure for indicating representative stator vibration mode.As shown in fig. 7, the stator core 13 of cantilever has
2 rank of annulus (referring to (a) in Fig. 7), 3 rank of annulus (referring to (b) in Fig. 7), 4 rank of annulus (referring to (c) in Fig. 7), 5 rank of annulus (ginseng
In Fig. 7 (d)), the vibration mode of 0 rank of annulus (referring to (e) in Fig. 7).As shown in figure 8, the stator core 13 of cantilever has circle
2 ranks of ring+bending (referring to (a) in Fig. 8), 3 ranks of annulus+bending (referring to (b) in Fig. 8), open loop (referring to (c) in Fig. 8)
Vibration mode.
There are said stator vibration modes for the stator core 13 of cantilevered construction, electronic due to the resonance part under vibration mode
Machine sound, carrier wave sound etc. become problem.
The present invention is completed in view of such background, and its purpose is to provide the rotations that can reduce stator vibration displacement
The assemble method of rotating motor and rotating electric machine.
Solution for solving the problem
In order to solve the problem, rotating electric machine documented by technical solution 1 accommodates rotor, rotary shaft and layer in the housing
The stator core folding multi-disc steel plate and being formed, the rotating electric machine are characterized in that stator core has: the first stator core layer
Stack, with mounting portion, the steel plate by the way that multi-disc the same shape is laminated is formed；Second stator core laminated body has peace
Dress portion is formed, described first by the steel plate of stacking multi-disc shape corresponding with the steel plate of the first stator core laminated body
Stator core laminated body is fixed in an axial side relative to the shell, and the second stator core laminated body is another axial direction
One side fixes relative to the shell.
Invention effect
In accordance with the invention it is possible to provide the assembling side of the rotating electric machine and rotating electric machine that can reduce stator vibration displacement
Method.
Detailed description of the invention
Fig. 1 is the sectional view of the rotating electric machine of one embodiment of the present invention.
Fig. 2 is the perspective view of the stator core laminated body of the rotating electric machine of above embodiment.
Fig. 3 is the figure for indicating the structure of the electromagnetic steel plate of stator core laminated body of the rotating electric machine of above embodiment,
(a) is its top view in Fig. 3, and (b) is the enlarged drawing of the part surrounded by the single dotted broken line of (a) in Fig. 3 in Fig. 3.
Fig. 4 be indicate the rotating electric machine of above embodiment stator core have cooling medium supply notch section
The perspective view of the lit-par-lit structure of electromagnetic steel plate, (a) is that the 3 cooling mediums supply for indicating to be open in different positions is used in Fig. 4
The perspective view of notch section, (d) is each cooling for indicating the part surrounded by single dotted broken line of (a) in Fig. 4 in (b)~Fig. 4 in Fig. 4
The medium supply perspective view of notch section.
Fig. 5 is the sectional view for indicating the assembling to shell of rotating electric machine of above embodiment.
Fig. 6 is the sectional view of the motor of conventional art.
Fig. 7 is the figure for indicating representative stator vibration mode.
Fig. 8 is the figure for indicating representative stator vibration mode.
Description of symbols:
30 cooling medium circulation pipes；
100 motor (rotating electric machine)；
110 rotors；
101 axis；
102,103 bearing；
120 stators；
121 first stator core laminated bodies；
121a, 122a are by fastening linking part；
121b, 122b through hole；
122 second stator core laminated bodies；
130 cooling medium distribution plates；
150 motor field frames；
151,161 bolt insertion hole；
152 tools avoid opening portion；
160 middle casings (lid)；
160a flange part；
220 electromagnetic steel plates；
221 main parts；
222 teeth；
223 slots；
224 cooling medium holes；
Notch section is used in the supply of 225 cooling mediums；
B1, B2 install bolt.
Specific embodiment
Then, attached drawing is suitably referred to explain the rotating electric machine of embodiments of the present invention in detail.It should be noted that
In the various figures, same appended drawing reference is marked to shared part and the repetitive description thereof will be omitted.
(embodiment)
Fig. 1 is the sectional view of the rotating electric machine of one embodiment of the present invention.Fig. 2 is the solid of stator core laminated body
Figure.
The motor 100 (rotating electric machine) of present embodiment is for example mounted in shown in Fig. 2 of hybrid electric vehicle (vehicle)
Such slim motor (shape has deformation in Fig. 1).
As shown in Figure 1, the stator 120 that motor 100 has rotor 110 and rotates rotor 110.
In addition, being configured with cooling medium circulation pipe 30 on the top of stator 120.Cooling medium circulation pipe 30 is by cooling medium
The cooling medium of supply pipe (illustration omitted) is released to the top of rotating electric machine main body.
Rotor 110 is not particularly illustrated, and is had the multiple cyclic annular steel plates for being fixed on axis 101 (referring to Fig. 4) and is set to more
Multiple permanent magnets between a ring-type steel plate, and rotated centered on axes O by the rotating excitation field that stator 120 generates.
Stator 120 has the first stator core laminated body 121 made of the steel plate of stacking multi-disc the same shape, stacking multi-disc
Second stator core laminated body 122 made of the steel plate of the same shape and it is set to the first stator core laminated body 121 and
The stator coil 123 of two stator core laminated bodies 122 (referring to Fig. 4).
First stator core laminated body 121 and the second stator core laminated body 122 by the stator core of the same shape with
Two one group of form combines.In other words, stator 120 is divided into the first stator core stacking of the same shape in the axial direction
Body 121 and second stator core laminated body 122 this two parts.
First stator core laminated body 121 stacking thickness and the second stator core laminated body 122 stacking thickness substantially
It is identical.It should be noted that the layer of the stacking thickness and the second stator core laminated body 122 of the first stator core laminated body 121
Folded thickness can also be different.
Stator 120 is described in more detail.
As shown in Fig. 2, the first stator core laminated body 121 has centered on axes O and in outer peripheral surface between θ 1:60 degree
Every it is prominent be formed with 6 by fastening linking part 121a, be formed in by fastening linking part 121a and for making to install bolt B 1
Axle portion along the perforative through hole 121b of front-rear direction and on outer peripheral surface for the second stator core laminated body 122
Between the protrusion 121c that is positioned.
Second stator core laminated body 122 has centered on axes O and on outer peripheral surface with the prominent shape in the 1:60 degree interval θ
At have 6 by fastening linking part 122a, be formed in by fastening linking part 122a and for make install bolt B 2 axle portion along
The perforative through hole 122b of front-rear direction and on outer peripheral surface for being carried out between the first stator core laminated body 121
The protrusion 122c of positioning.
As shown in Fig. 2, the first stator core laminated body 121 and the second stator core laminated body 122 are wrong each other in the circumferential
Open the configuration of 2 ground of angle, θ.In the present embodiment, the first stator core laminated body 121 and the second stator core laminated body 122 are wrong
It configures with opening equal part phase (θ 2:30 degree).
As described above, the first stator core laminated body 121 and the second stator core laminated body 122 are determined by the same shape
Sub- iron core is combined in the form of two one group, but the two is with being staggered equal part phase (θ 2:30 degree) arranged opposite.Therefore, such as
Shown in Fig. 2, the first stator core laminated body 121 is laminated by fastening linking part 121a and through hole 121b and the second stator core
The equal part phase that is staggered by fastening linking part 122a and through hole 122b of body 122.Also, as shown in Figure 1, existing from axial side
First stator core laminated body 121 is run through the axle portion for having installation bolt B 1 in the through hole 121b of fastening linking part 121a,
First stator core laminated body 121 fastens the inner wall for being linked to aftermentioned motor field frame 150.From the axial other side second
Being run through in the through hole 122b of fastening linking part 122a for stator core laminated body 122 has the axle portion for installing bolt B 2, and second
Stator core laminated body 122 fastens the inner wall for being linked to aftermentioned middle casing 160.For the insert side of installation bolt B 1, B2
To, such as front end the connecing from the first stator core laminated body 121 and the second stator core laminated body 122 of installation bolt B 1, B2
Side is stitched to pass through towards outside (referring to Fig. 4).
Therefore, the first stator core laminated body 121 and the second stator core laminated body 122 are the same shape, but are staggered
Split-phase position it is arranged opposite, therefore when installation direction installed to shell is from end on observation, becomes reversed.When the first stator core
It is fixed when observing structure as a whole in the case that laminated body 121 and the second stator core laminated body 122 become one
Son 120 becomes two-side supporting and constructs.
As shown in Figure 1, being provided between the first stator core laminated body 121 and the second stator core laminated body 122 cold
But medium distribution plate 130 (aftermentioned).
Cooling medium distribution plate 130 is utilized 122 groups of the first stator core laminated body 121 and the second stator core laminated body
Its gap is used as the flow path of cooling medium by the construction of conjunction.
Cooling medium distribution plate 130 accommodates cooling medium and to the first stator core laminated body 121 and the second stator core
Inner part between laminated body 122 matches cooling medium.
Fig. 3 is the electromagnetic steel plate 220 for indicating the first stator core laminated body 121 and the second stator core laminated body 122
The figure of structure, (a) is its top view in Fig. 3, and (b) is the enlarged drawing of the part surrounded by single dotted broken line of (a) in Fig. 3 in Fig. 3.
It should be noted that being omitted in Fig. 3 by the diagram of fastening linking part 122a, through hole 122b and protrusion 121c.
Electromagnetic steel plate 220 is the cricoid component formed by the excellent material such as core loss value, magnetic flux density and magnetic permeability, In
Outer surface is coated with insulating coating.
As shown in figure 3, electromagnetic steel plate 220 has annular in shape and stacking and forms the main part 221 of iron core main body, from main body
The inner circumferential ora terminalis 221a in portion 221 is at equal intervals to radially inner side multiple teeth 222 outstanding, as being formed between multiple teeth 222
Multiple slots 223 in space, iron core main body 221 periphery ora terminalis 221b (thickness direction) along stacking direction it is perforative cold
But it medium hole 224 and is opened up made of slot to being cut off between adjacent tooth 222a and tooth 222b in main part 221
Cooling medium supply notch section 225.
For the electromagnetic steel plate 220 with cooling medium supply notch section 225, the thickness of monolithic for example formed as
0.3mm.The electromagnetic steel plate 220 is for example laminated to 6 in a manner of making the aligned in position of cooling medium supply notch section 225.
The cooling medium supply of electromagnetic steel plate 220 after stacking constitutes cooling medium distribution plate 130 (referring to Fig.1) with notch section 225.
Fig. 4 is the perspective view for indicating to have the lit-par-lit structure of the electromagnetic steel plate 220 of cooling medium supply notch section 225,
(a) is the perspective view for indicating 3 cooling medium supply notch sections 225 being open in different position in Fig. 4, (b) in Fig. 4~
(d) is the solid for indicating each cooling medium supply notch section 225 of the part surrounded by single dotted broken line of (a) in Fig. 4 in Fig. 4
Figure.
In Fig. 4 shown in (a), electromagnetic steel plate 220 is laminated with 6 in such a way that the thickness of monolithic is, for example, 0.3mm, stacking
Electromagnetic steel plate 220 made of 6 changes cooling medium supply with the phase of 225 position of notch section (groove location) and is laminated again.
In the stacking example of Fig. 4, the form for being laminated × 3 sets with 6 makes with a thickness of 5.4mm, and slot is made to be present in 3 positions.
As shown in the arrow of described Fig. 1, it is fixed that the cooling medium released from cooling medium circulation pipe 30 (referring to Fig.1) is fallen to
The top of sub 120 (referring to Fig.1).Fall to the arrow of (d) in (b)~Fig. 4 in the cooling medium such as Fig. 4 on the top of stator 120
It is shown that the cooling medium supply to electromagnetic steel plate 220 is supplied with notch section 225 (the cooling medium distribution plate 130 of Fig. 1) like that,
And it is flowed from cooling medium supply with notch section 225 to stator coil (illustration omitted).Cooling medium can be made along stator 120
Radial Flow, the cooling performance of electric rotating motivation can be improved with cooling medium to the inner part of stator core.
Fig. 5 is the sectional view for indicating the assembling to shell of rotating electric machine of present embodiment.
As shown in figure 5, motor 100 is had the axis 101 extended along anteroposterior direction centered on axes O 1, is fixed on
The rotor 110 of axis 101, the stator 120 for rotating rotor 110 and the conduct that the rear openings portion of stator 120 is blocked
The motor field frame 150 of shell and the middle casing 160 as cover that the front openings portion of stator 120 is blocked.
Axis 101 is by being set to the bearing 102 of motor field frame 150 and being set to the 103 axis branch of bearing of middle casing 160
It holds.
Middle casing 160 has flange part 160a, combines with the opening portion 150a of motor field frame 150 and completes shell
(shell).
It offers in the inner wall of motor field frame 150 for the through hole for running through the second stator core laminated body 121
The bolt B 1 of 121b carries out the bolt insertion hole 151 of fastening connection.In addition, offering tool evacuation on motor field frame 150
Opening portion 152.Tool avoids opening portion 152 and is open to gear box side.
It offers in the inner wall of middle casing 160 for the through hole 122b for running through the second stator core laminated body 122
Bolt B 2 carry out fastening connection bolt insertion hole 161.
Hereinafter, the assemble method for the rotating electric machine that explanation is constituted as described above.
As shown in figure 5, the inner wall in motor field frame 150 offers bolt insertion hole 151, in middle casing 160
Wall offers bolt insertion hole 161.
Firstly, executing the process that the first stator core laminated body 121 is combined with the second stator core laminated body 122.The
One stator core laminated body 121 and the second stator core laminated body 122 pass through the protrusion 121c for making to be formed in outer peripheral surface, protrusion
122c is aligned and can be easily positioned.
Next, bolt B 1 will be installed through the first stator core laminated body 121 by fastening linking part 121a's by executing
Through hole 121b, and the process for being screwed on the bolt insertion hole 151 of the inner wall of motor field frame 150.
Next, executing the process that rotor 110 is assembled in motor field frame 150.
Next, executing the process that middle casing 160 is assembled in motor field frame 150.Specifically, making middle casing
160 flange part 160a is aligned with the opening portion 150a of motor field frame 150, and carries out bolt (illustration omitted) fastening connection.
Finally, bolt B 2 will be installed through the passing through by fastening linking part 122a of the second stator core laminated body 122 by executing
Through-hole 122b, and the process for being screwed on the bolt insertion hole 161 of the inner wall of middle casing 160 (lid).
When executing above-mentioned each process, by avoiding opening portion 152, energy using the tool being open in motor field frame 150
Enough it is easy to carry out operation.
As described above, stator 120 has the first stator core made of the steel plate of stacking multi-disc the same shape
Second stator core laminated body 122 made of laminated body 121 and the steel plate of stacking multi-disc the same shape.First stator core stacking
Body 121 and the second stator core laminated body 122 are composed in a manner of point symmetry by the stator core of the same shape
Component, the two be integrally formed and become two-side supporting construct.
First stator core laminated body 121 is with being staggered equal part phase arranged opposite with the second stator core laminated body 122, because
This installation direction installed to shell becomes reversed when from end on observation.Therefore, in the first stator core laminated body 121 and
In the case that two stator core laminated bodies 122 become one, stator 120 is constructed as two-side supporting.First stator core layer
Stack 121 and the second stator core laminated body 122 can be crimped by fastening link mechanism from two sides and form one.At this point, working as
Chimeric such bumps each other are formed with the seam crossing of the second stator core laminated body 122 in the first stator core laminated body 121
When, it being capable of further integration.It, can be further integrated securely when the seam uses bonding agent.
Stator 120 is formed as two-side supporting construction, and thus, it is possible to improve rigidity, reduce motor stator vibration displacement.Energy
Enough inhibit opening pattern shown in Fig. 8.
Stator 120 can be generated altogether by the way that motor stator-core is divided into 2 parts and is configured with being staggered phase respectively
The deformation of vibration mode opposite phase can obtain the effect for offsetting vibration.
2 rank of annulus shown in Fig. 7,3 rank of annulus, 4 rank of annulus, 5 rank of annulus can be with same frequencys to the direction of counteracting as a result,
Effect.
In addition, first is fixed it is not necessary that special housing installation portion is arranged in motor field frame 150 and middle casing 160 (lid)
Sub- iron core laminated body 121 and the second stator core laminated body 122 can be installed on the bolt insertion hole 151,161 of inner walls.
Housing installation portion is not needed, therefore weight can not be generated and increase installation position with increasing, can be improved stator ring rigidity.
In addition, can be improved cold in the intermediate setting cooling medium distribution plate 130 for being divided into two-part stator core
But performance.Cooling medium distribution plate 130 is utilized 122 groups of the first stator core laminated body 121 and the second stator core laminated body
The construction of conjunction, setting are easy.
It should be noted that the present invention is not limited to the above embodiments, certainly the contents based on the specification and can
To use various structures.
The equal part phase for example, the first stator core laminated body 121 and the second stator core laminated body 122 are staggered, but as long as
It is to be staggered, is not limited to equal part phase.By that will be staggered, equal part phase is set as other phases that are staggered, thus even for circle
2 rank of ring, 3 rank of annulus, 4 rank of annulus, 5 rank of annulus and the effect acted on to the direction of counteracting with same frequency is reduced, high-order
Harmonic components can also be reduced.
Hybrid vehicle has been enumerated, it is just unlimited but as long as being the vehicle for having rotating electric machine (motor and generator)
Due to this.For example, hybrid vehicle be also possible to it is only electronic motor-driven using motor as driving source without engine
Vehicle or fuel-cell vehicle.
Claims (6)
1. a kind of rotating electric machine, rotor, rotary shaft and stacking multi-disc steel plate are accommodated in the housing and the stator core that is formed,
The rotating electric machine is characterized in that,
Stator core has: being laminated with mounting portion and by the first stator core made of the steel plate of stacking multi-disc the same shape
Body；And with mounting portion and pass through the steel plate of stacking multi-disc shape corresponding with the steel plate of the first stator core laminated body
Made of the second stator core laminated body,
The first stator core laminated body is fixed in an axial side relative to the shell, the second stator core stacking
Body is fixed in axial another party relative to the shell.
2. rotating electric machine according to claim 1, which is characterized in that
The first stator core laminated body is in staggered configuration in the circumferential with the second stator core laminated body.
3. rotating electric machine according to claim 1, which is characterized in that
The stacking thickness substantially phase of the stacking thickness and the second stator core laminated body of the first stator core laminated body
Together.
4. rotating electric machine according to claim 1, which is characterized in that
The stacking thickness of the first stator core laminated body is different from the stacking thickness of the second stator core laminated body.
5. rotating electric machine according to claim 1, which is characterized in that
Receiving cooling medium is simultaneously configured at described first with the cooling medium distribution plate of cooling medium to the inner part of stator core
Between stator core laminated body and the second stator core laminated body.
6. a kind of assemble method of rotating electric machine, the rotating electric machine accommodates rotor, rotary shaft and stacking multi-disc steel in the housing
Plate and the stator core formed, the assemble method of the rotating electric machine are characterized in that,
It is provided with installation bolt insertion hole on the housing,
The assemble method of the rotating electric machine includes
The process for combining the first stator core laminated body with the second stator core laminated body；
The process that the first stator core laminated body is assembled in the shell；
The process for assembling the rotor onto the shell；
The process that lid is assembled in the shell；And
The process that installation bolt is passed through the second stator core laminated body and is assembled in the lid.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018093486A JP2019201457A (en) | 2018-05-15 | 2018-05-15 | Rotary electric machine and assembly method of rotary electric machine |
| JP2018-093486 | 2018-05-15 |
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| Publication Number | Publication Date |
|---|---|
| CN110492626A true CN110492626A (en) | 2019-11-22 |
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| CN201910396930.6A Pending CN110492626A (en) | 2018-05-15 | 2019-05-13 | The assemble method of rotating electric machine and rotating electric machine |
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| JP (1) | JP2019201457A (en) |
| CN (1) | CN110492626A (en) |
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| JP2007221907A (en) * | 2006-02-16 | 2007-08-30 | Mitsubishi Electric Corp | Stator core and rotating machine |
| JP2007274749A (en) * | 2006-03-30 | 2007-10-18 | Toyota Motor Corp | Stator, motor and method for manufacturing stator |
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| Publication number | Publication date |
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| JP2019201457A (en) | 2019-11-21 |
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Application publication date: 20191122 |