CN106953438A - Outer rotor and its punching section, outer rotor iron core and its component and preparation method - Google Patents
Outer rotor and its punching section, outer rotor iron core and its component and preparation method Download PDFInfo
- Publication number
- CN106953438A CN106953438A CN201710233108.9A CN201710233108A CN106953438A CN 106953438 A CN106953438 A CN 106953438A CN 201710233108 A CN201710233108 A CN 201710233108A CN 106953438 A CN106953438 A CN 106953438A
- Authority
- CN
- China
- Prior art keywords
- outer rotor
- iron core
- rotor iron
- punching section
- arc body
- 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
Links
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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/26—Rotor cores with slots for windings
- H02K1/265—Shape, form or location of the slots
-
- 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
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/024—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with slots
Abstract
The present invention relates to rotor technical field, a kind of outer rotor and its punching section, outer rotor iron core and its component and preparation method are disclosed.Outer rotor punching section is used to form outer rotor iron core, and outer rotor punching section includes arc body, wherein, circumferentially direction, interval is formed with multiple type grooves on arc body.Because outer rotor punching section has arc body, so, multiple such arc bodies can be cut or punching out successively on a plate, namely, relative to it is of the prior art directly from outer rotor of the plate mold punching press to form the annular for, the arc body of the application can be effectively formed using the plate of circle ring center, this will significantly decrease the loss of leftover pieces in outer rotor forming process, material cost is greatly reduced.Meanwhile, multiple such arc bodies can form the outer rotor iron core of annular after circumferentially splicing and be fixedly connected successively, and this similarly ensure that the overall quality of outer rotor.
Description
Technical field
The present invention relates to rotor technical field, more particularly to a kind of outer rotor punching section, a kind of outer rotor iron core
Component, a kind of outer rotor iron core, a kind of outer rotor and a kind of preparation method of outer rotor iron core.
Background technology
At present it is known that, single-phase asynchronous motor is mainly made up of stator and rotor, wherein rotor be by rotor core and
Rotor windings are constituted, and rotor core typically laminates to be formed using silicon steel sheet, and rotor windings can form mouse cage shape by cast aluminium
Shape, this rotor is typically cast-in aluminum squirrel cage rotor.Meanwhile, single-phase asynchronous motor can be divided into inner rotor motor and outer from structure
Rotor electric machine.
Cast-in aluminum squirrel cage formula rotor because manufacture craft it is simple, it is reliable be commonly applied on single-phase asynchronous motor.Outside
In rotor electric machine, stator is at center, and rotor is in outside.At present, in order to ensure the reliability and quality of outer rotor, outer rotor is set
For the annulus of complete one, it is, the outer rotor of the annular directly is formed from a plate mold punching press, so that, it is many
Individual such outer rotor is superimposed, and can lift the global reliability of outer rotor.
But, there is certain deficiency in such outer rotor, due to needing that complete circle is directly stamped and formed out from plate
Ring-shaped, so, the leftover pieces of a large amount of useless outer rotor center hole sizes will be directly produced in mould punching, so as to cause
The waste of raw material so that the material cost of motor is higher.
The content of the invention
The larger skill of wastage of material in outer rotor forming process the invention aims to overcome prior art presence
Art problem is there is provided a kind of outer rotor punching section, and the outer rotor punching segment structure is simple, is easy to shaping, and can significantly decrease
The loss of leftover pieces, is greatly reduced material cost in outer rotor forming process.
To achieve these goals, one aspect of the present invention provides a kind of outer rotor punching section, and the outer rotor punching section is used
In forming outer rotor iron core, outer rotor punching section includes arc body, wherein, circumferentially direction, the arc body
Upper interval is formed with multiple type grooves.
By above-mentioned technical proposal, because outer rotor punching section has arc body, so, can on a plate according to
It is secondary to be cut or punching out multiple such arc bodies, it is, relative to of the prior art directly from a plate mold
Punching press is formed for the outer rotor of the annular, can effectively form the arc sheet of the application using the plate of circle ring center
Body, this will significantly decrease the loss of leftover pieces in outer rotor forming process, material cost be greatly reduced.Meanwhile, it is multiple so
Arc body circumferentially splice and be fixedly connected successively after can form the outer rotor iron core of annular, this similarly ensure that
The overall quality of outer rotor.
Further, it is respectively formed with and splices successively in multiple outer rotor punchings section on the both ends of the arc body
The open slot of the type groove can be formed afterwards.
Further, the open slot is the half of the type groove.
In addition, the two ends of the arc body are formed with the splicing knot spliced successively for multiple outer rotor punchings section
Structure.
Further, the splicing construction is the peripheral recess and other end formation that described arc body one end is formed
Circumferential raised line, wherein, the peripheral recess is formed on the outer peripheral face of outer rotor punching section, and the circumferential raised line
Outer peripheral face is flushed with the outer peripheral face of outer rotor punching section.
On the other hand, the present invention provides a kind of outer rotor iron core component, and the outer rotor iron core component includes multiple above-mentioned
Any described outer rotor punching section, wherein, multiple outer rotor punching sections are laminated successively, and the adjacent outer rotor
The type groove of punching section is communicated.
So, as described above, in outer rotor forming process is significantly decreased leftover pieces loss, material is greatly reduced
While cost, multiple such outer rotor iron core components circumferentially splice and are fixedly connected to form the outer rotor iron of annular
Core, this similarly ensure that the overall quality of outer rotor.
Further, along same circumferential direction, multiple outer rotor punchings sections stagger predetermined angle successively so that many
The individual type groove formation ramp way.
On the other hand, the present invention provides a kind of outer rotor iron core, multiple any of the above-described described outer rotor iron core components according to
The secondary fixed outer rotor iron core for forming annular of splicing.
So, as described above, the leftover pieces that the outer rotor iron core is produced in forming process will be significantly decreased, big
While reducing material cost, it also ensure that the overall quality of outer rotor iron core width.
Further, the peripheral recess of the arc body one end mutually spliced and another described arc body
The circumferential raised line overlap joint of the other end coordinates so that the splicing seams of extension are formed on the outer peripheral face of the outer rotor iron core, described
Weld seam is provided with splicing seams.
Another further aspect, the present invention provides a kind of outer rotor, and the outer rotor is provided with any of the above-described described outer rotor iron
Core.So, as described above, the material cost of the outer rotor is significantly reduced, and ensure that with good overall quality.
Finally, the present invention provides a kind of preparation method of outer rotor iron core, and the preparation method of the outer rotor iron core includes：
Multiple any of the above-described described outer rotor punching sections are provided, and multiple outer rotor punchings section is laminated to form one above-mentioned successively
Outer rotor iron core component described in one；Multiple outer rotor iron core components are spliced into the fixed outer rotor iron for forming annular successively
Core.
So, as described above, multiple such arc bodies can be cut or punching out successively on a plate, relatively
In of the prior art directly for outer rotor of the plate mold punching press to form the annular, the outer rotor of the application
The preparation method of iron core can effectively form the arc body of the application using the plate of circle ring center, and this will be significantly decreased
The loss of leftover pieces, is greatly reduced material cost in outer rotor forming process.Meanwhile, multiple outer rotor iron core components are circumferential successively
The outer rotor iron core of annular can be formed after splicing and being fixedly connected, this similarly ensure that the overall quality of outer rotor.
Further, by the peripheral recess of an arc body one end and the circumferential raised line of another arc body other end
Overlap joint coordinates, and to form the splicing seams of extension on the outer peripheral face of the outer rotor iron core, and the splicing seams is welded
To form weld seam.
Brief description of the drawings
Fig. 1 is the structural representation for the outer rotor punching section that the present invention is provided；
Fig. 2 is the structural representation for the outer rotor iron core component that the present invention is provided；
Fig. 3 is Fig. 2 side structure schematic view；
Fig. 4 is the structural representation for the outer rotor iron core that the present invention is provided；
Fig. 5 is Fig. 4 side structure schematic view；
Fig. 6 is the side structure schematic view for the outer rotor that the present invention is provided；
Fig. 7 is the schematic diagram that the outer rotor punching section of the present invention is sequentially formed from plate.
Description of reference numerals
Outside 1- outer rotors punching section, 2- arc bodies, 3- type grooves, 4- open slots, 5- peripheral recess, 6- circumference raised lines, 7-
Side face, 8- outer rotor iron core components, 9- ramp ways, 10- outer rotor iron cores, 11- weld seams, 12- cast layers.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this place is retouched
The embodiment stated is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In a first aspect, with reference to Fig. 1 and Fig. 7, the outer rotor punching section 1 that the present invention is provided is used to form outer rotor iron core (such as
Shown in Fig. 4), outer rotor punching section 1 includes arc body 2, wherein, circumferentially direction, interval is formed with many on arc body 2
Individual type groove 3.
It is so, as shown in Figure 7 because outer rotor punching section 1 has arc body 2 in the technical scheme, can be with
Be cut or punching out multiple such arc bodies 2 successively on a plate, it is, relative to it is of the prior art directly from
One plate mold punching press is formed for the outer rotor of the annular, and this can be effectively formed using the plate of circle ring center
The arc body of application, this will significantly decrease the loss of leftover pieces in outer rotor forming process, and material cost, example is greatly reduced
Such as, 20%-30% material can be saved under the outer rotor of same specification.Meanwhile, as shown in Figure 4, multiple such arcs
Shape body 2 is circumferential to be spliced and can form the outer rotor iron core of annular after being fixedly connected such as welding successively, and this similarly can
Enough ensure the overall quality of outer rotor.
Further, it is necessary to be welded to splicing seams when the circumferential splicing of multiple outer rotor punching sections 1 is connected, now, in order to
Reduce the air gap that splicing seams are produced, it is preferable that as shown in Figure 1, it is respectively formed with and is somebody's turn to do multiple on the both ends of arc body 2
Outer rotor punching section can form the open slot 4 of type groove 3 after splicing successively.So, it is as shown in Figure 4, multiple outer rotor punchings
When the circumferential splicing of section 1 is connected, the open slot 4 of two outer rotor punchings, 1 opposing end surface of section of connection will form a type groove together
3, the type groove 3 will form multiple circumferences together with other type grooves 3 on arc body 2 on the whole circumference face of outer rotor iron core
Spaced apart type groove 3.
Further, for the ease of the shaping of outer rotor iron core, each outer rotor punching 1 assembling each other of section is lifted
Efficiency, it is preferable that open slot 4 is the half of type groove 3.So, any two outer rotor punching section 1 can splice connection.
Certainly, can be flat face on the end face of each outer rotor punching section 1, so, directly welding can be real after splicing
Now connect.
Or, in order to further lift the reliability and stability that each outer rotor punching section 1 is spliced each other, preferably
Ground, the structure with reference to shown in Fig. 1, the two ends of arc body 2 are formed with the spelling spliced successively for multiple outer rotor punchings section
Binding structure.Such as, each outer rotor punching section is spliced by the splicing construction first connects, then further along splicing seam welding,
So, it is fixedly connected by splicing construction with the dual of weld seam, can make it that the outer rotor iron core of annular is more firm.
Certainly, the splicing construction can have multiple structural forms, as long as the phase of two outer rotor punching sections 1 can be realized
Mutually splicing, for example, in a kind of structure type, forming fluted at the non-edge of one end of an outer rotor punching section 1, separately
Projection is formed with the non-edge of one 1 relative one end of outer rotor punching section, so, when two outer rotor punching sections 1 are spliced,
Projection will form cooperation with groove, then, be welded along the splicing seams on outer peripheral face.
Or, in another structure type, as shown in Figure 1, splicing construction is the circumference that the one end of arc body 2 is formed
Recess 5 and the circumferential raised line 6 of other end formation, wherein, peripheral recess 5 is formed on the outer peripheral face 7 of outer rotor punching section 1, and
And the outer peripheral face of circumferential raised line 6 is flushed with the outer peripheral face 7 of outer rotor punching section 1.Such circumferential raised line 6 and peripheral recess 5 are not
Only it is easy to shaping for outer rotor punching section 1, as shown in figure 4, when mutually splicing, circumferential raised line 6 will be overlapped on peripheral recess 5
On, as shown in Figure 4 so that the outer peripheral face of outer rotor iron core is formed as circular.
Second aspect, the present invention provides a kind of outer rotor iron core component 8, the structure with reference to shown in Fig. 2, outer rotor iron core group
Part 8 includes multiple any of the above-described described outer rotor punching sections 1, wherein, multiple outer rotor punching sections 1 are laminated successively, and phase
The type groove 3 of adjacent outer rotor punching section 1 is communicated.
So, as described above, in outer rotor forming process is significantly decreased leftover pieces loss, material is greatly reduced
While cost, multiple such outer rotor iron core components 8 are circumferential to be spliced and is fixedly connected to form the outer rotor iron of annular
Core, this similarly ensure that the overall quality of outer rotor.
Further, in order to lift the performance of outer rotor iron core and motor, as shown in Figures 2 and 3, along same circumference side
Stagger successively predetermined angle to, multiple outer rotor punchings section 1 so that multiple formation of type grooves 3 and existing outer rotor are substantially similar
Ramp way 9, certainly, the effect of the ramp way 9 and prior art it is identical.And the predetermined angle staggered can be according to electricity
Machine performance is determined.
The third aspect, the present invention provides any described outer rotor iron core in a kind of outer rotor iron core, multiple second aspects
Component 8 splices the fixed outer rotor iron core 10 for forming annular successively, as shown in Figure 4, so, as described above, this outer turn
The leftover pieces that sub- iron core 10 is produced in forming process will be significantly decreased, and while material cost is greatly reduced, also can
Enough ensure the overall quality of outer rotor iron core 10.
Further, as shown in Figures 4 and 5, the peripheral recess 5 of the one end of arc body 2 mutually spliced and another
The overlap joint of circumferential raised line 6 of the other end of arc body 2 coordinates so that the splicing of extension is formed on the outer peripheral face of outer rotor iron core 10
Seam, is provided with weld seam 11 at splicing seams, so, as described above, by the overlap joint of peripheral recess 5 and circumferential raised line 6 and right
The welding of lap gap, can cause the outer rotor iron core of annular more firm by dual connection.
Fourth aspect, the present invention provides a kind of outer rotor, as shown in Figure 6, outer rotor is provided with the third aspect arbitrarily
Described outer rotor iron core.So, as described above, the material cost of the outer rotor is significantly reduced, and ensure that have
Good overall quality.
5th aspect, the present invention also provides a kind of preparation method of outer rotor iron core, wherein, the making of the outer rotor iron core
Method includes：Multiple any of the above-described described outer rotor punching sections 1 are provided, as shown in fig. 7, can successively be rushed on one piece of plate
Swaging is as shown in Figure 2 into multiple such outer rotor punchings sections 1, and multiple outer rotor punchings section 1 is laminated to form one successively
Individual any of the above-described described outer rotor iron core component 8；Multiple outer rotor iron core components 8 are spliced to fixation successively and form annular
Outer rotor iron core 10, as shown in Figure 4.
So, as described above, multiple such arc bodies can be cut or punching out successively on a plate, relatively
In of the prior art directly for outer rotor of the plate mold punching press to form the annular, the outer rotor of the application
The preparation method of iron core can effectively form the arc body of the application using the plate of circle ring center, and this will be significantly decreased
The loss of leftover pieces, is greatly reduced material cost in outer rotor forming process.Meanwhile, multiple outer rotor iron core components are circumferential successively
The outer rotor iron core of annular can be formed after splicing and being fixedly connected, this similarly ensure that the overall quality of outer rotor.
Further, can be by the peripheral recess of an arc body one end in the preparation method of the outer rotor iron core
Overlap and coordinate with the circumferential raised line of another arc body other end, to form the spelling of extension on the outer peripheral face of outer rotor iron core
Seam, and splicing seams are welded to form weld seam.So, as described above, peripheral recess 5 and circumferential raised line 6 are passed through
Overlap joint and the welding to lap gap (splicing seams), can cause the outer rotor iron core of annular more firm by dual connection
Gu.
Then, it is as shown in Figure 6, can as prior art, the outer rotor iron core of the annular after welding according to
The requirement die casting of performance and peripheral structure forms cast layer 12 or enamel-cover line winding, to form cage rotor.Certainly, cast layer can be with
For cast aluminium or cast copper.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited thereto.At this
In the range of the technology design of invention, a variety of simple variants can be carried out to technical scheme.Including each particular technique
Feature is combined in any suitable manner, and in order to avoid unnecessary repetition, the present invention is to various possible combinations
No longer separately illustrate.But these simple variants and combination should equally be considered as content disclosed in this invention, belong to the present invention
Protection domain.
Claims (12)
1. a kind of outer rotor punching section, it is characterised in that the outer rotor punching section (1) is used to form outer rotor iron core, described
Outer rotor punching section (1) includes arc body (2), wherein, circumferentially direction is spaced on the arc body (2) and is formed with
Multiple type grooves (3).
2. outer rotor punching section according to claim 1, it is characterised in that divide on the both ends of the arc body (2)
The open slot (4) of the type groove (3) can be formed after multiple outer rotor punchings section is spliced successively by not being formed with.
3. outer rotor punching section according to claim 2, it is characterised in that the open slot (4) is the type groove (3)
Half.
4. the outer rotor punching section according to any one in claim 1-3, it is characterised in that the arc body (2)
Two ends be formed with for the splicing construction that splices successively of multiple outer rotor punchings section.
5. outer rotor punching section according to claim 4, it is characterised in that the splicing construction is the arc body
(2) one end is formed peripheral recess (5) and the circumferential raised line (6) of other end formation, wherein,
The peripheral recess (5) is formed on the outer peripheral face (7) of outer rotor punching section (1), and the circumferential raised line (6)
The outer peripheral face (7) of outer peripheral face and the outer rotor punching section (1) flush.
6. a kind of outer rotor iron core component, it is characterised in that the outer rotor iron core component (8) includes multiple according to claim
Outer rotor punching section in 1-5 described in any one, wherein, multiple outer rotor punching sections (1) laminate successively, and adjacent
The outer rotor punching section (1) type groove (3) communicate.
7. outer rotor iron core component according to claim 6, it is characterised in that along same circumferential direction, multiple described
Outer rotor punching section (1) staggers predetermined angle successively so that multiple type grooves (3) form ramp ways (9).
8. a kind of outer rotor iron core, it is characterised in that multiple outer rotor iron core components (8) according to claim 6 or 7 according to
The secondary fixed outer rotor iron core (10) for forming annular of splicing.
9. outer rotor iron core according to claim 8, it is characterised in that the arc body (2) mutually spliced
Circumferential raised line (6) overlap joint of the peripheral recess (5) of one end and another arc body (2) other end coordinates so that in institute
Formed on the outer peripheral face for stating outer rotor iron core (10) and weld seam (11) is provided with the splicing seams of extension, the splicing seams.
10. a kind of outer rotor, it is characterised in that the outer rotor is provided with outer rotor iron according to claim 8 or claim 9
Core.
11. a kind of preparation method of outer rotor iron core, it is characterised in that the preparation method of the outer rotor iron core includes：
Outer rotor punching section described in any one in multiple 1-5 according to claim is provided, and by multiple outer rotor punchings section
Laminate to form an outer rotor iron core component according to claim 6 or 7 successively；
Multiple outer rotor iron core components are spliced into the fixed outer rotor iron core for forming annular successively.
12. the preparation method of outer rotor iron core according to claim 11, it is characterised in that by an arc body one end
Peripheral recess and another arc body other end circumferential raised line overlap joint coordinate, with the outer peripheral face of the outer rotor iron core
It is upper to form the splicing seams of extension, and the splicing seams are welded to form weld seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233108.9A CN106953438A (en) | 2017-04-11 | 2017-04-11 | Outer rotor and its punching section, outer rotor iron core and its component and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233108.9A CN106953438A (en) | 2017-04-11 | 2017-04-11 | Outer rotor and its punching section, outer rotor iron core and its component and preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106953438A true CN106953438A (en) | 2017-07-14 |
Family
ID=59475195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710233108.9A Pending CN106953438A (en) | 2017-04-11 | 2017-04-11 | Outer rotor and its punching section, outer rotor iron core and its component and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106953438A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109149816A (en) * | 2018-09-28 | 2019-01-04 | 苏州润吉驱动技术有限公司 | A kind of spliced outer rotor of permanent magnet motor |
| WO2020050196A1 (en) * | 2018-09-04 | 2020-03-12 | 株式会社荏原製作所 | Rotor for outer-rotor type motor, motor equipped with rotor, turbomolecular pump equipped with motor, and substrate rotation device equipped with motor |
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| CN1913283A (en) * | 2005-08-12 | 2007-02-14 | 三洋电机株式会社 | Electromotor for washing machine and washing machine having the electric motor |
| CN1960137A (en) * | 2005-10-31 | 2007-05-09 | 川乐机电股份有限公司 | Iron core in use for rotary motor and assembling method |
| CN101800456A (en) * | 2009-02-11 | 2010-08-11 | 深圳华任兴科技有限公司 | Method for preparing amorphous alloy stator core by using modular mode |
| CN102857040A (en) * | 2011-06-30 | 2013-01-02 | 通用汽车环球科技运作有限责任公司 | Method of manufacturing segmented stator core |
| CN103051114A (en) * | 2012-12-11 | 2013-04-17 | 信质电机股份有限公司 | Method for processing chute of iron core of motor stator |
| JP2016077046A (en) * | 2014-10-03 | 2016-05-12 | 株式会社三井ハイテック | Manufacturing method of laminated core, and laminate |
| CN206060374U (en) * | 2016-09-24 | 2017-03-29 | 三禾电器(福建)有限公司 | A kind of outer rotor generator stator punching for medium-high frequency |
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| DE10256735A1 (en) * | 2002-05-21 | 2003-12-04 | Continental Teves Ag & Co Ohg | Hydraulic pump electric drive motor for driving a slippage-controlled motor vehicle brake unit hydraulic pump has a rotor and a stator |
| CN1913283A (en) * | 2005-08-12 | 2007-02-14 | 三洋电机株式会社 | Electromotor for washing machine and washing machine having the electric motor |
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| CN102857040A (en) * | 2011-06-30 | 2013-01-02 | 通用汽车环球科技运作有限责任公司 | Method of manufacturing segmented stator core |
| CN103051114A (en) * | 2012-12-11 | 2013-04-17 | 信质电机股份有限公司 | Method for processing chute of iron core of motor stator |
| JP2016077046A (en) * | 2014-10-03 | 2016-05-12 | 株式会社三井ハイテック | Manufacturing method of laminated core, and laminate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020050196A1 (en) * | 2018-09-04 | 2020-03-12 | 株式会社荏原製作所 | Rotor for outer-rotor type motor, motor equipped with rotor, turbomolecular pump equipped with motor, and substrate rotation device equipped with motor |
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| JP7244236B2 (en) | 2018-09-04 | 2023-03-22 | 株式会社荏原製作所 | Rotor for outer rotor type motor, motor including rotor, turbomolecular pump including motor, and substrate rotating apparatus including motor |
| CN109149816A (en) * | 2018-09-28 | 2019-01-04 | 苏州润吉驱动技术有限公司 | A kind of spliced outer rotor of permanent magnet motor |
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Application publication date: 20170714 |