CN109804534A - Rotor unit and motor - Google Patents
Rotor unit and motor Download PDFInfo
- Publication number
- CN109804534A CN109804534A CN201780060073.1A CN201780060073A CN109804534A CN 109804534 A CN109804534 A CN 109804534A CN 201780060073 A CN201780060073 A CN 201780060073A CN 109804534 A CN109804534 A CN 109804534A
- Authority
- CN
- China
- Prior art keywords
- rotor
- retainer
- magnet
- rotor core
- rotor unit
- 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.)
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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
- H02K1/22—Rotating 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Using a kind of rotor unit, cricoid rotor core is included, surrounds the central axis vertically extended；Multiple magnet, their outer periphery circumferential arrays in the rotor core；Retainer is kept relative to upper end of the rotor core to multiple magnet；And rotor cap, the rotor core, the retainer and multiple magnet are stored, the rotor core has hole portion or recess portion in lower end, and the rotor cap includes canister portion, surrounds the periphery of multiple magnet；Bottom surface sections keep the lower end of multiple magnet；And protrusion, extend from the bottom surface sections, the protrusion has the insertion section being inserted in the hole portion or the recess portion of the rotor core.
Description
Technical field
The present invention relates to rotor units and motor.
Background technique
In the past, there are a kind of electric motors, had the rotor and stator for being configured with permanent magnet.In patent document 1,
Disclose with flowering structure: comprising rotor cap and edge cap portion in the rotor of such electric motor, which covers magnet
Outer surface and chimeric with its, which determines rotation preventing mechanism.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Application Publication 2015-511110 bulletin
Summary of the invention
Subject to be solved by the invention
It include edge cap portion in the form of individual components in the rotor of above-mentioned existing structure.By linking edge cap
Portion, it is therefore prevented that rotor cap dallies relative to rotor.However, needing edge cap portion, therefore component increases in such existing structure
Add.
It is an object of the present invention to using the simple structure of component is reduced, and prevent the rotor cap phase in motor rotation
It dallies for retainer.
Means for solving the problems
The first invention of illustration of the invention is the rotor unit used in motor, which includes cricoid
Rotor core surrounds the central axis vertically extended；Multiple magnet, they are all in the outer periphery of the rotor core
To arrangement；Retainer is kept relative to upper end of the rotor core to multiple magnet；And rotor cap,
Store the rotor core, the retainer and multiple magnet.The rotor core has hole portion or recess portion in lower end.Institute
It states rotor cap and includes canister portion, surround the periphery of multiple magnet；Bottom surface sections carry out the lower end of multiple magnet
It keeps；And protrusion, extend from the bottom surface sections.The protrusion has the hole portion for being inserted in the rotor core
Or the insertion section in the recess portion.
Invention effect
It, can be by reducing the simple structure of component according to the rotor unit of the first invention of the illustration of aforementioned present invention
To prevent in motor rotation rotor cap to dally relative to retainer.
Detailed description of the invention
Fig. 1 is the cross-sectional view of motor.
Fig. 2 is the exploded perspective view of rotor unit.
Fig. 3 be in the state that rotor core, magnet and retainer combine from bottom surface side when perspective view.
Fig. 4 be in the state that rotor core, magnet and retainer combine from upper surface side when solid
Figure.
Perspective view when Fig. 5 is the rotor unit from bottom surface side.
Perspective view when Fig. 6 is the rotor unit from upper surface side.
Fig. 7 is the cross-sectional view of rotor unit.
Fig. 8 is from the perspective view when rotor unit from bottom surface side in manufacturing process.
Specific embodiment
Hereinafter, the embodiments of the present invention will be described with reference to the drawings.But embodiment described below is only
An example of the invention, not limiting the technical scope of the present invention property are explained.In addition, in the drawings, sometimes to identical
Structural element marks identical label and the description thereof will be omitted.
Embodiments of the present invention are characterized in that, the rotor unit used in motor (also referred to as " rotating electric machine ")
The structure of (also referred to as " rotor " or " gyrator ").In embodiments, using centered on the rotor unit as characteristic
It is illustrated.
In the present specification, suitably define relative to the central axis J of the rotation of motor " upper direction " or " upside " with
And " lower direction " or " downside " and be illustrated.But not necessarily " lower direction " or " downside " relative to " upper direction " or
" upside " is located at the downside of gravity direction, and motor can be configured according to arbitrary direction.In addition, sometimes that rotor unit etc. is each
The face of the upside of structure is referred to as " upper surface ", and the face of downside is referred to as " bottom surface ".In addition, in the present specification, it will be in rotor list
The case where retainer and rotor cap do not have circumferentially synchronous rotary but relative rotation in member referred to as " is dallied ".
1. embodiment > of <
Fig. 1 is the cross-sectional view of the motor 1 of present embodiment.As shown in Figure 1, motor 1 includes axis 101, rotor unit 10, determines
Son 102, shell 103, bearing retainer 104, first bearing 105, second bearing 106, insulating part 107 and coil 108 etc..Axis
101 and rotor unit 10 be structure as a whole.
Axis 101 is cylindrical, centered on the central axis J extended in one direction.Rotor unit 10 is located at axis 101
Half-way.Rotor unit 10 can be rotated relative to stator 102.
Stator 102 is configured to surround rotor unit 10 in the axial direction.Stator 102 has Wire-wound in insulating part 107
And the coil 108 constituted.
Shell 103 be configured to it is chimeric with the outer peripheral surface of stator 102, storage constitute motor 1 include axis 101, rotor unit
10, each including stator 102, bearing retainer 104, first bearing 105, second bearing 106, insulating part 107 and coil 108
Structure.Shell 103 is in substantially cylindric.
Bearing retainer 104 supports the second bearing 106 for the upside for being configured at rotor unit 10 and stator 102.
Bearing retainer 104 is configured at the upside of rotor unit 10 and stator 102, chimeric with shell 103.Bearing retainer 104 is wrapping
The position of the J containing central axis has through hole.Axis 101 is configured in the through hole of bearing retainer 104.
First bearing 105 is configured at the bottom of shell 103, supports to the side of axis 101.Second bearing 106 configures
In the upside of rotor unit 10, the other side of axis 101 is supported.First bearing 105 and second bearing 106 are according to rotor list
The mode that member 10 can be rotated relative to stator 102 supports axis 101.First bearing 105 and second bearing 106 be via
Sphere and the ball bearing for making outer ring Yu inner ring relative rotation.But it is also possible to use its other party such as sliding bearing or fluid bearing
The bearing of formula replaces the ball bearing as first bearing 105 and second bearing 106.In addition, having enumerated motor 1 with first bearing
105 and second bearing 106 example, but can also using structure with a bearing etc., at least there is the knot of a bearing
Structure.
Insulating part 107 is configured between stator 102 and the conducting wire for constituting coil 108, makes leading for stator 102 and coil 108
Line insulation.
Fig. 2 is the exploded perspective view of the rotor unit 10 of present embodiment.Fig. 3 is in rotor unit 10 in rotor core
12, perspective view when in the state that magnet 13 and retainer 11 combining from bottom surface side.Fig. 4 is in rotor unit 10
In in the state that rotor core 12, magnet 13 and retainer 11 combine from upper surface side when perspective view.Fig. 5
Perspective view when being the rotor unit 10 from bottom surface side.Perspective view when Fig. 6 is the rotor unit 10 from upper surface side.
As shown in Fig. 2, rotor unit 10 is configured to comprising retainer 11, rotor core 12, magnet 13 and rotor cap 14.
In Fig. 2, retainer 11 is configured at upside relative to rotor cap 14.
Retainer 11 is configured to comprising linking part 111 and lattice 112.Retainer 11 is the component of resin.Linking part
The upper end of 111 pairs of magnet 13 is kept, so that multiple magnet 13 will not fall off from rotor core 12.
Linking part 111 is annular in shape, and the upper end of multiple lattices 112 is linked up and is kept.Linking part 111 exists
Part comprising central axis J has retainer opening portion 111a.The corner 111c of the periphery of the upper surface side of linking part 111 is in
The cambered rounded shapes of lateral surface band.
Lattice 112 is multiple to being extended with downward from linking part 111, assembles as rotor unit 10
Under state, lattice 112 is respectively arranged between multiple magnet 13 adjacent in the circumferential.Lattice 112 with central axis J
The section in vertical face extends from radial outside towards radially inner side, the end of the circumferential lengths of midway portion than radial outside
It is short with the circumferential lengths of the end of radially inner side.According to the construction, it is therefore prevented that retainer 11 is from rotor core 12 to outer circumferential
It falls off.Due to be inserted into magnet 13 in assembling procedure, the bottom surface side of retainer 11 is open.
Rotor core 12 be arranged in the central part of rotor unit 10 in surrounding octagon etc. of central axis J substantially just
Polygon-prism shape and part annular in shape are by electromagnetic steel plate along the metal portion that axially stacked stacked steel plate is constituted
Part.Rotor core 12 has the through hole 122 being inserted into for axis 101 in the part comprising central axis J.In the ratio of rotor core 12
Through hole 122 has by the position of radial outside along multiple holes of the up and down direction cylindrical extension parallel with central axis J
Portion 121.The through hole 122 and hole portion 121 of rotor core 12 are penetrated through from the upper end of rotor core 12 to lower end.In rotor core
On each face of 12 peripheral side, it is respectively configured as magnet 13 and is contacted with rotor core 12.
Magnet 13 includes the plane of inner circumferential side, contacts with rotor core 12；And the flexure plane of peripheral side, it is formed
It is in the shape of arc-shaped bend for the section vertical with central axis J.Magnet 13 is permanent magnet.The radial outside of magnet 13
Flexure plane is opposed with the stator 102 of motor 1.Multiple magnet 13 with the magnetic pole strength of the magnetic pole strength of the pole N and the pole S in the circumferential alternately
The mode of arrangement circumferentially arranges on the periphery of rotor core 12.Magnet 13 is by being pressed into a pair of of lattice adjacent to each other
It is assembled between 112.In the state of assembling, the upper end of magnet 13 is kept by the linking part 111 of retainer 11, magnetic
The lower end of iron 13 is kept by the bottom surface sections 142 of rotor cap 14.
Rotor cap 14 has canister portion 141 and bottom surface sections 142, and rotor cap 14 is cylindrical, with what is opened to upper surface side
Opening portion 14a (referring to figure 5 and figure 6).Canister portion 141 surrounds the periphery of multiple magnet 13.Bottom surface sections 142 are under multiple magnet 13
End is kept.Rotor cap 14 is the metal of the nonmagnetic materials such as iron, aluminium.Rotor cap 14 is, for example, to pass through punch process etc.
It is formed.Rotor cap 14 stores rotor core 12, retainer 11 and multiple magnet 13.Canister portion 141, which is in central axis J, is
The cylindrical shape of the heart, in the state that rotor unit 10 assembles, the periphery for surrounding multiple magnet 13 is whole, a part and holding
The linking part 111 of frame 11 is overlapped.In addition, rotor cap 14 can also be replaced by formation such as the resins of nonmagnetic material by nonmagnetic material
Metal manufacture.
The bottom surface sections 142 of rotor cap 14 are annular in shape, are configured at the lower end of canister portion 141.It is assembled in rotor unit 10
Under state, bottom surface sections 142 cover the part of the bottom surface side of retainer 11 opened to be inserted into magnet 13 in assembling procedure.
Bottom surface sections 142 keep the lower end of the bottom surface side of magnet 13 as a result,.Rotor cap 14 has outer by being open in bottom surface sections 142
The opening portion 142b that edge 142a delimited out.
Fig. 7 is the cross-sectional view of rotor unit 10.As shown in figure 5 and figure 7, bottom surface sections 142 include extension 143a, from
Rims portion 142a extends inwardly to all；Insertion section 143b, the position buckling Chong Die with hole portion 121 from extension 143a
Ground is inserted in hole portion 121.Insertion section 143b is from the hole portion 121 that lower end towards upside is inserted in rotor core 12.Insertion
The circumferential both ends of portion 143b respectively with all face contacts of hole portion 121.It is circumferential due to insertion section 143b in motor rotation
Both ends are hung in the circumferential in hole portion 121, therefore rotor core 12 will not dally with rotor cap 14, rotate synchronously with one another.Such as
Shown in Fig. 5, bottom surface sections 142 have two couples of extension 143a and insertion section in the position opposite each other relative to central axis J
The combination of 143b.Extension 143a and insertion section 143b is collectively referred to as " protrusion 143 ".
The through hole 122 and hole portion 121 of the lower end of rotor core 12 expose from the opening portion 142b of bottom surface sections 142.
As shown in Figure 6 and Figure 7, the upper end of the canister portion 141 of rotor cap 14 forms the angle of the rounded shapes along linking part 111
Buckling portion 141a of the portion 111c to radially inner side buckling.Thereby, it is possible to prevent rotor cap 14 from falling off along axial direction from retainer 11.
In addition, the buckling portion 141a of rotor cap 14 can also be using the linking part for being embedded in retainer 11 by calking
Shape in multiple notch 111b (referring to Fig. 4 and Fig. 6) of 111 inner peripheral surface.It, can be more effective when using such structure
Ground prevents rotor cap 14 from falling off from retainer 11 along axial direction, and more efficiently prevent from rotor cap 14 relative to retainer 11, turn
Sub- iron core 12 and magnet 13 dally.
The manufacturing method > of < rotor unit 10
When manufacturing rotor unit 10, firstly, rotor core 12 to be configured to the inside of mold.Then, to configured with turn
The internal injection resin of the mold of sub- iron core 12.It is as a result, the shape with multiple lattices 112 by 11 insert-molding of retainer
Shape.Here, retainer 11 is formed in such a way that the axial size for making lattice 112 is greater than the axial size of magnet 13.
In the manufacturing process of insert-molding, carry out retainer 11 molding and rotor core 12 and retainer 11 to fix this double
Side.Therefore, consolidating compared to the molding and rotor core 12 for carrying out retainer 11 by individual process and retainer 11
Fixed situation shortens the manufacturing process of rotor core 12 and retainer 11.
Then, magnet 13 is configured between a pair of of lattice 112 adjacent to each other.Assuming that include magnet 13 carry out it is embedding
If part forms, need rotor core before insert-molding and magnet 13 to be adhered to the method for rotor core 12 etc.
12 and magnet 13 be at least temporarily fixed up.In contrast, in the present embodiment, the holding after being hardened using molding completion
Frame 11 carries out the positioning of magnet 13.Therefore, it compared to including the case where magnet 13 carries out insert-molding, can be easier
And precisely multiple magnet 13 are positioned.
But retainer 11 is not necessarily, by insert-molding to make, and can also separate with rotor core 12 and independent
Ground molding.
Then, as shown in Fig. 2, by the rotor core 12 kept by retainer 11 and multiple magnet 13 opening from rotor cap 14
Put portion 14a insertion.Then, so that the upper end of the canister portion 141 of rotor cap 14 is become buckling portion 141a to radially inner side buckling, become
Along the shape of the corner 111c of linking part 111.
As shown in figure 8, in a pre-assembly condition, there is opening from opening portion 142b in the bottom surface sections 142 of rotor cap 14
The protrusion 143 that mouth outer edge 142a extends towards radially inner side.In assembling procedure, make in protrusion 143 from towards diameter
The end of the radially inner side of the protrusion 143 extended inwardly is to the part Chong Die with the circumferential surface of the radial outside of hole portion 121
The upward lateroflexion in position only is bent.Become the state that insertion section 143b is inserted in Fig. 5 in hole portion 121 as a result,.
In addition, the end of the radially inner side of protrusion 143 is not necessarily the shape in arc-shaped bend as shown in Figure 8
Shape is also possible to rectangular shape.But when the end of the radially inner side of protrusion 143 is the arc-shaped along hole portion 121,
Due to being inserted into the deeper position of hole portion 121, preferably.
2. variation > of <
Rotor unit of the invention is not limited to above-mentioned embodiment, also comprising that may be considered based on above embodiment
Various modes out.For example, rotor unit of the invention is also possible to the structure of following such variation.
In the rotor unit 10 of embodiment, the bottom surface sections 142 of rotor cap 14 are that there are two the knots of protrusion 143 for tool
Structure, but the quantity of protrusion 143 can be changed arbitrarily.For example, bottom surface sections 142 can also equably have in the circumferential there are three with
On protrusion 143, it is possible to have a protrusion 143.But when use bottom surface sections 142 have multiple protrusions 143
When structure, retainer 11, rotor core 12 and magnet 13 can be more efficiently prevented from and dallied relative to rotor cap 14, therefore is excellent
Choosing.Multiple 143 preferred dispositions of protrusion impartial position in the circumferential, so that equably to each insertion section 143b applied force.
On the other hand, when having the structure of a protrusion 143 using bottom surface sections 142, material cost and processing cost can be cut down.
In rotor unit 10, rotor core 12 has from lower end edge axially through the hole portion 121 to upper end, but can also be with
The structure of hole portion 121 is replaced using having the concave recess portion extended from lower end towards upside.In this case, may be used not
Hole or recess portion are formed in the upper end of rotor core 12.In the case where with such a structure, retainer 11 can be prevented, turned
Sub- iron core 12 and magnet 13 dally relative to rotor cap 14.
It the periphery of rotor core 12 can be using multilateral shape as embodiment but it is also possible to be cylindrical shape.In addition,
The quantity of magnet 13 can be changed arbitrarily, and the quantity of lattice 112 is also changed according to the quantity of magnet 13.
Other > of < 3.
More than, embodiments of the present invention and variation are illustrated.In the above description, only as one
The explanation of a embodiment, the scope of the present invention are not limited to an embodiment, should be construed broadly to those skilled in the art
The range that member can grasp.For example, above embodiment and each variation can be combined with each other and implement.
Motor of the invention is mainly used as the motor of automobile.For example, for the motor of braking or electric boosted turn
To motor etc..It is further possible to for the various uses other than automobile.For example, it is also possible to for it is electric boosted voluntarily
Vehicle, battery-operated motor cycle, household appliances, OA equipment and Medical Devices etc..
In addition, rotor unit and motor of the invention also can be constituted generator with same.Motor of the invention
Also it can be used as the generator used in automobile, electric assisted bicycle, wind-power electricity generation etc..
Industrial availability
The present invention can be used as the rotor unit of such as motor or motor.
Label declaration
1: motor；101: axis；102: stator；103: shell；104: bearing retainer；105: first bearing；106: the second
Bearing；107: insulating part；108: coil；10: rotor unit；11: retainer；111: linking part；111a: retainer opening portion；
111b: notch；111c: corner；112: lattice；12: rotor core；121: hole portion；122: through hole；13: magnet；14: turning
Son cover；14a: opening portion；141: canister portion；141a: buckling portion；142: bottom surface sections；142a: rims portion；142b: opening portion；
143: protrusion；143a: extension；143b: insertion section.
Claims (7)
1. a kind of rotor unit, wherein
The rotor unit includes
Cricoid rotor core surrounds the central axis vertically extended；
Multiple magnet, their outer periphery circumferential arrays in the rotor core；
Retainer is kept relative to upper end of the rotor core to multiple magnet；And
Rotor cap stores the rotor core, the retainer and multiple magnet,
The rotor core has hole portion or recess portion in lower end,
The rotor cap includes
Canister portion surrounds the periphery of multiple magnet；
Bottom surface sections keep the lower end of multiple magnet；And
Protrusion extends from the bottom surface sections,
The protrusion has the insertion section being inserted in the hole portion or the recess portion of the rotor core.
2. rotor unit according to claim 1, wherein
The rotor cap has the opening portion delimited out by rims portion in the position comprising central axis of the bottom surface sections,
The protrusion also has the extension extended from the rims portion to radially inner side,
The insertion section is inserted in the hole or the recess portion from the extension.
3. rotor unit according to claim 1 or 2, wherein
The protrusion along the bottom surface sections it is arranged circumferentially have it is multiple.
4. rotor unit according to claim 3, wherein
Multiple protrusions are circumferentially configured with impartial interval.
5. according to claim 1 to rotor unit described in any one in 4, wherein
The retainer also includes
Cricoid linking part keeps the upper end of the magnet；And
Lattice is configured between the magnet adjacent in the circumferential.
6. according to claim 1 to rotor unit described in any one in 5, wherein
The retainer is resin system,
The rotor cap is metal.
7. a kind of motor, wherein
The motor includes
Rotor, it includes rotor units described in any one in claim 1 to 6, and have to prolong along the vertical direction
Axis centered on the central axis stretched；
Stator, it is opposed with the rotor, and there are multiple coils；And
Bearing supports the axis in such a way that the rotor can be rotated relative to the stator.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-190994 | 2016-09-29 | ||
| JP2016190994 | 2016-09-29 | ||
| PCT/JP2017/035116 WO2018062350A1 (en) | 2016-09-29 | 2017-09-28 | Rotor unit and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109804534A true CN109804534A (en) | 2019-05-24 |
Family
ID=61760483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780060073.1A Withdrawn CN109804534A (en) | 2016-09-29 | 2017-09-28 | Rotor unit and motor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2018062350A1 (en) |
| CN (1) | CN109804534A (en) |
| WO (1) | WO2018062350A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112534681A (en) * | 2018-08-03 | 2021-03-19 | 日本电产株式会社 | Rotor and motor |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7053381B2 (en) * | 2018-06-13 | 2022-04-12 | Ntn株式会社 | Rotor unit, electric motor and electric actuator |
| JP6871289B2 (en) | 2019-03-04 | 2021-05-12 | 本田技研工業株式会社 | Rotor and rotary electric machine |
| JP7236957B2 (en) * | 2019-08-09 | 2023-03-10 | 株式会社ミツバ | motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010004661A (en) * | 2008-06-20 | 2010-01-07 | Jtekt Corp | Permanent magnet rotor and method for manufacturing the same |
| JP2010178505A (en) * | 2009-01-29 | 2010-08-12 | Toyota Motor Corp | Rotor structure |
| JP2015144565A (en) * | 2015-03-27 | 2015-08-06 | 日本電産株式会社 | rotor unit |
-
2017
- 2017-09-28 JP JP2018542830A patent/JPWO2018062350A1/en active Pending
- 2017-09-28 CN CN201780060073.1A patent/CN109804534A/en not_active Withdrawn
- 2017-09-28 WO PCT/JP2017/035116 patent/WO2018062350A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010004661A (en) * | 2008-06-20 | 2010-01-07 | Jtekt Corp | Permanent magnet rotor and method for manufacturing the same |
| JP2010178505A (en) * | 2009-01-29 | 2010-08-12 | Toyota Motor Corp | Rotor structure |
| JP2015144565A (en) * | 2015-03-27 | 2015-08-06 | 日本電産株式会社 | rotor unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112534681A (en) * | 2018-08-03 | 2021-03-19 | 日本电产株式会社 | Rotor and motor |
| CN112534681B (en) * | 2018-08-03 | 2024-01-09 | 日本电产株式会社 | Rotor and motor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018062350A1 (en) | 2018-04-05 |
| JPWO2018062350A1 (en) | 2019-07-11 |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190524 |