CN104380572A - Permanent-magnet rotating electrical machine and method of manufacture thereof - Google Patents
Permanent-magnet rotating electrical machine and method of manufacture thereof Download PDFInfo
- Publication number
- CN104380572A CN104380572A CN201280073979.4A CN201280073979A CN104380572A CN 104380572 A CN104380572 A CN 104380572A CN 201280073979 A CN201280073979 A CN 201280073979A CN 104380572 A CN104380572 A CN 104380572A
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- Prior art keywords
- permanent magnet
- magnet
- limiting unit
- installed surface
- electric machine
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- 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
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Abstract
In a magnet-type motor according to the present invention, axial-direction restriction parts at a wall section are configured so that, when fixing four or more permanent magnets onto the wall, permanent magnets at intermediate locations, among permanent magnets adjacent in the axial direction, are restricted from moving in the axial direction due to repulsive force.
Description
Technical field
The present invention relates to permanent magnet rotary electric machine and manufacture method thereof, this permanent magnet rotary electric machine has the rotor being fixed with multiple permanent magnet at the outer peripheral face in yoke portion.
Background technology
Permanent magnet motor by multiple permanent magnet is configured in yoke portion obliquely relative to the straight line of the axis being parallel with rotor, can reduce the generation of high order harmonic component, torque pulsation inhibited.Further, in order to be reduced the effect of high order harmonic component, the quantity increasing the section that segmentation is tilted is needed.
Therefore, in permanent magnet motor in the past, according to every section of inclination, be formed with the wall portion extended in the axial direction at the outer peripheral face in yoke portion, to be fixed circumference location (for example, referring to patent documentation 1) of the permanent magnet on the outer peripheral face in the yoke portion of rotor.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2006-304407 publication
Summary of the invention
The problem that invention will solve
In large-scale permanent magnet motor in the past, rotor becomes large-scale, and the size of axis direction increases, and when for adapting to permanent magnet that rotor adopts axis direction longer, crackle easily occurring, causes the decrease in yield of permanent magnet.Therefore, need to increase segmentation permanent magnet and the quantity of small permanent magnet that arranges in the axial direction.
Further, when being fixed on the outer peripheral face in yoke portion at the permanent magnet arranging a large amount of homopolarity in the axial direction, first fixing permanent magnet and rear fixing permanent magnet repel and make position produce skew.
When arranging 3 in the axial direction, as long as first use permanent magnet positioning fixture the permanent magnet of the both end sides of rotor to be fixed on the outer peripheral face in yoke portion, the finally permanent magnet of fixing central authorities, can not produce the fixed operation of permanent magnet and hinder.
But, when wanting the permanent magnet fixing more than 4 along axis direction, there are the following problems: when not limiting the fixture etc. of position of axis direction of permanent magnet of pars intermedia, the permanent magnet of first fixing pars intermedia moves due to the repulsion between the permanent magnet that axis direction is adjacent, until terminate the fixing of the permanent magnet of whole pars intermedia, cause the operation cost time of outer peripheral face permanent magnet being fixed on yoke portion.
The present invention proposes to address this is that just, its object is to, a kind of permanent magnet rotary electric machine and manufacture method thereof are provided, when fixing the permanent magnet of more than 4 in the axial direction, permanent magnet, owing to moving in the axial direction from original paste position at the adjacent permanent magnet of axis direction repulsion each other, successfully can be fixed on the outer peripheral face in yoke portion by the permanent magnet of restriction pars intermedia.
For the means of dealing with problems
Permanent magnet rotary electric machine of the present invention has the stator of ring-type and can be supported on rotor inside this stator rotatably, and described rotor has the yoke portion of ring-type and is fixed on multiple permanent magnets of outer peripheral face in this yoke portion,
In the periphery in described yoke portion, by the magnet installed surface extended along axis direction and the side of wall formed in the both sides of the circumference of this magnet installed surface of fixing described permanent magnet, formation magnet mounting groove,
Described magnet installed surface is formed by installing face at the magnet of the multistage of the stepped displacement of circumference successively along axis direction,
Described wall is made up of multiple wall portion of separating at axis direction,
The side of described wall portion is limitation arrangement installs the circumference movement of the described permanent magnet of face circumferential limiting unit at described magnet, and end face is the axial limiting unit of the axis direction movement limiting described permanent magnet,
The permanent magnet being configured in pars intermedia when described magnet installed surface is configured with the described permanent magnet of the homopolarity of more than 4 continuously abuts with described axial limiting unit, with limit due to the adjacent permanent magnet of described axis direction repulsion and move in the axial direction.
In addition, according to the manufacture method of permanent magnet rotary electric machine of the present invention, comprise following steps: along axis direction and axis being parallel, Milling Process is carried out to the periphery of endless member, forms described magnet installed surface and described circumferential limiting unit; And tangentially Milling Process is carried out to the periphery of described endless member, form described axial limiting unit.
Invention effect
According to permanent magnet rotary electric machine of the present invention, when fixing the permanent magnet of more than 4 in the axial direction, the permanent magnet of the axial limiting unit restriction pars intermedia of wall portion is owing to moving in the axial direction from original paste position at the adjacent permanent magnet of axis direction repulsion each other, and thus permanent magnet successfully can be fixed on the outer peripheral face in yoke portion.
Therefore, it is possible to segmentation permanent magnet makes it miniaturized, thus can increase the quantity of the section that segmentation is tilted, segmentation can be made to tilt to be similar to continuous tilt to reduce the generation of high order harmonic component.
Further, according to the manufacture method of permanent magnet rotary electric machine of the present invention, by carrying out Milling Process to the periphery of endless member, magnet installed surface, circumferential limiting unit and axial limiting unit can easily be formed.
Accompanying drawing explanation
Fig. 1 is cutaway view when being cut off along axis direction by the permanent magnet motor of embodiments of the present invention 1.
Fig. 2 is the front view of the permanent magnet motor representing Fig. 1.
Fig. 3 is the stereogram of the rotor representing Fig. 1.
Fig. 4 represents that the stereogram of the state of permanent magnet removed by the rotor from Fig. 3.
Fig. 5 is the vertical view amplified in the yoke portion of Fig. 4.
Fig. 6 is the vertical view amplified by the rotor of Fig. 3.
Fig. 7 is the direction view of the A-A line along Fig. 6.
Fig. 8 is the direction view of the B-B line along Fig. 6.
Fig. 9 is the direction view of the C-C line along Fig. 6.
Figure 10 is the fragmentary front view in the yoke portion of Fig. 3.
Figure 11 is the key diagram of the step of the magnet mounting groove represented for manuscript 4.
Figure 12 is the cutaway view of the major part of the rotor representing permanent magnet motor in the past.
Figure 13 is the cutaway view of the major part of the rotor representing permanent magnet motor in the past.
Figure 14 is the cutaway view of the major part of the rotor of the permanent magnet motor representing embodiments of the present invention 2.
Figure 15 is the cutaway view of the major part of the rotor of the permanent magnet motor representing embodiments of the present invention 3.
Embodiment
, the permanent magnet motor of the embodiments of the present invention is described with reference to the accompanying drawings below, in various figures identical or suitable parts, position is marked identical label and be described.
Execution mode 1
Fig. 1 is cutaway view when being cut off along axis direction by the permanent magnet motor of embodiments of the present invention 1, Fig. 2 is the front view of the permanent magnet motor representing Fig. 1, Fig. 3 is the stereogram of the rotor 2 representing Fig. 1, Fig. 4 represents that the stereogram of the state of permanent magnet 9 removed by the rotor 2 from Fig. 3, and Fig. 5 is the vertical view amplified in the yoke portion 8 of Fig. 4.
Permanent magnet motor as permanent magnet rotary electric machine has stator 1 and the rotor 2 of ring-type, and this rotor 2 can be supported on the inner side of this stator 1 rotatably across small gap.
Multi-disc thin plate laminated steel forms by stator 1, and have iron core 4 and multiple coil 3, iron core 4 has each teeth portion 6 that each leading section extends with equal intervals in the axial direction in circumference, and coil 3 is installed in iron core 4, by forming in each teeth portion 6 winding cables 5.
Rotor 2 have along the rotating shaft 7 of Axis Extension, ring-type yoke portion 8 and be fixed on multiple permanent magnets 9 of outer peripheral face in yoke portion 8.This yoke portion 8 be using as the cast iron of iron class alloy or steel for raw material, by processing obtain being cast into circular cast component (solid construction parts).
In the periphery in yoke portion 8, form magnet mounting groove 10 by the magnet installed surface 11 along the stepped extension of axis direction and the wall 12 that formed in the left and right of this magnet installed surface 11.
Magnet installed surface 11 is formed by the plane that the tangent plane of the periphery with yoke portion 8 is almost parallel, has that the 1st magnet installs facial 11A, the 2nd magnet installs facial 11B and the 3rd magnet installs facial 11C at grade.1st magnet installs facial 11A, the 2nd magnet installs facial 11B and the 3rd magnet installs facial 11C all on the same face, and along axis direction successively in the stepped displacement of circumference.
Further, in the periphery in yoke portion 8, circumferentially form according to the number of poles of permanent magnet motor the magnet installed surface 11 extended in the axial direction.
Wall 12 is outstanding to external diameter side from magnet installed surface 11, and the 1st wall portion 12A formed by the circumferential both sides of installing facial 11A at the 1st magnet, the 2nd wall portion 12B formed in the circumferential both sides that the 2nd magnet installs facial 11B and the 3rd wall portion 12C formed in the circumferential both sides that the 3rd magnet installs facial 11C are formed.
In addition, the A of Fig. 5 be as plane magnet installed surface 11 with at the adjacent line crossing as the magnet installed surface 11 of plane of circumference.
Fig. 6 is the vertical view amplified by the rotor 2 of Fig. 3, and Fig. 7 is the direction view of the A-A line along Fig. 6, and Fig. 8 is the direction view of the B-B line along Fig. 6, and Fig. 9 is the direction view of the C-C line along Fig. 6, and Figure 10 is the fragmentary front view in the yoke portion 8 representing Fig. 3.
1st permanent magnet 9A and the 2nd permanent magnet 9B is fixed on the 1st magnet and installs facial 11A, 3rd permanent magnet 9C and the 4th permanent magnet 9D is fixed on the 2nd magnet and installs facial 11B, and the 5th permanent magnet 9E and the 6th permanent magnet 9F is fixed on the 3rd magnet and installs facial 11C.
That is, at each magnet, facial 11A, 11B, 11C are installed and are fixed with each 2 permanent magnets 9A, 9B, 9C, 9D, 9E, 9F respectively.
Further, permanent magnet 9A, 9B, 9C, 9D, 9E, 9F polarity adjacent in the circumference in yoke portion 8 is different, and this magnet installed surface 11 is also permanent magnet 9A, 9B, 9C, 9D, 9E, the 9F of the axis direction configuration homopolarity along yoke portion 8.
1st wall portion 12A has the circumferential limiting unit 13 of circumference movement of restriction the 1st permanent magnet 9A, the 2nd permanent magnet 9B.2nd wall portion 12B has restriction the 3rd permanent magnet 9C, the circumferential limiting unit 13 of circumference movement of the 4th permanent magnet 9D and the axial limiting unit 14 of the axis direction movement of restriction the 2nd permanent magnet 9B.3rd wall portion 12C has restriction the 5th permanent magnet 9E, the circumferential limiting unit 13 of circumference movement of the 6th permanent magnet 9F and the axial limiting unit 14 of the axis direction movement of restriction the 4th permanent magnet 9D.
Circumference limiting unit 13 refers to two faces of circumference of each wall portion 12A, 12B, 12C, these two faces be vertical with magnet installed surface 11 and with the plane of axis being parallel.
Axial limiting unit 14 refers to a side end face of the 2nd wall portion 12B, the 3rd wall portion 12C, this end face be substantially vertical with magnet installed surface 11 and with the plane of axes normal.
1st permanent magnet 9A and the 2nd permanent magnet 9B and the 5th permanent magnet 9E and the 6th permanent magnet 9F offsets from each other inclination angle in the circumference in yoke portion 8.
That is, connect summit and the straight line of the axis of rotor 2, the straight line with the axis on the summit and rotor 2 that are connected the 5th permanent magnet 9E and the 6th permanent magnet 9F of the 1st permanent magnet 9A and the 2nd permanent magnet 9B, offset from each other inclination angle in the circumference in yoke portion 8.
Below, the formation method of the magnet mounting groove 10 in yoke portion 8 is described according to Figure 11.
Figure 11 is the key diagram of the step represented for the formation of magnet mounting groove 10.
Magnet mounting groove 10 can cut the periphery of endless member by such as milling (fraise) processing and obtain.
Specifically, after endless member is fixing in non-rotary mode, make the slotting cutter (endmill) of configuration substantially vertical with the periphery of endless member from the end face of the axis direction of endless member along the approximate horizontal movement of axis direction (from circle I to circle II).
Then, make slotting cutter to parallel with the periphery tangent plane of endless member and move with the direction of axes normal (from circle II to circle III).
Then, the periphery tangent plane of slotting cutter and endless member is made again to move to axis side substantially in parallel (from circle III to circle IV).Circle IV is partial to left side compared with circle II.
Thus, form the 1st magnet and facial 11A, the circumferential limiting unit 13 of the 1st wall portion 12A and the axial limiting unit 14 of the 2nd wall portion 12B are installed.
Then, make slotting cutter along the approximate horizontal movement of axis direction (from circle IV to circle V) of endless member.
Then, make slotting cutter to parallel with the periphery tangent plane of endless member and move with the direction of axes normal (from circle V to circle VI).
Then, the periphery tangent plane of slotting cutter and endless member is made again to move to axis side substantially in parallel (from circle VI to circle VII).Circle VII is partial to left side compared with circle V.
Thus, form the 2nd magnet and facial 11B, the circumferential limiting unit 13 of the 2nd wall portion 12B and the axial limiting unit 14 of the 3rd wall portion 12C are installed.
Then, make slotting cutter along the approximate horizontal movement of axis direction (from circle VII to circle VIII) of endless member.
Thus, the circumferential limiting unit 13 that the 3rd magnet installs facial 11C and the 3rd wall portion 12C is formed.
Like this, magnet mounting groove 10 is formed in the periphery in yoke portion 8, this magnet mounting groove 10 is made up of the stair-stepping magnet installed surface 11 be shifted in circumference successively along axis direction and the wall 12 that formed in the left and right of this magnet installed surface 11, and this wall 12 is made up of the 1st wall portion 12A, the 2nd wall portion 12B, the 3rd wall portion 12C.
Then, by the fixing releasing of endless member, carry out above-mentioned Milling Process making endless member again fix after the predetermined angular that rotates in a circumferential direction.
Further, carry out Milling Process with equal intervals along the all-round of endless member in the circumference of endless member, form the yoke portion 8 that periphery has multiple magnet mounting groove 10.
As described above, according to the permanent magnet motor of this execution mode, 2nd wall portion 12B, the 3rd wall portion 12C have axial limiting unit 14 respectively, therefore, when permanent magnet 9A, 9B, 9C, 9D, 9E, 9F of homopolarity are configured in magnet installed surface 11 continuously, be configured in middle permanent magnet 9B, 9D to abut with axial limiting unit 14, move in the axial direction to limit due to the repulsion at adjacent permanent magnet 9A, the 9C of axis direction.
Namely, when shown in Figure 12 there is no a yoke portion 8A of axial limiting unit 14, there is into the wall 20 of two sections that are integrated, in addition, when shown in Figure 13 there is no a yoke portion 8B of axial limiting unit 14, there is into the wall 20A of four sections that are integrated, in 2 yoke portions 8A, 8B, wanting the two ends 2 permanent magnets 9 being fixed on yoke portion 8A, 8B, when then fixing the 3rd permanent magnet 9, this permanent magnet 9 spills into due to repulsion in the region fixing the 4th permanent magnet 9.
On the other hand, can not produce such defect in this embodiment, permanent magnet 9A, 9B, 9C, 9D, 9E, 9F easily can be configured in the position of regulation.
Therefore, when splitting permanent magnet 9 and configure the permanent magnet 9 of small-sized more than 4 along axis direction, permanent magnet 9 can not move in the axial direction due to the repulsion of adjacent permanent magnet 9, consequently can realize multistage, the quantity tilted by increasing segmentation makes it be similar to continuous tilt, can reduce the generation of high order harmonic component further.
In addition, permanent magnet 9 self becomes small-sized, thus easily makes.
In addition, in this embodiment, not by turning but form multiple magnet mounting groove 10 by Milling Process, magnet installed surface 11 is planes, namely the 1st magnet installs facial 11A, the 2nd magnet installs facial 11B and the 3rd magnet installs facial 11C all on the same face, thus easily processes, and, the installed surface of permanent magnet 9A, 9B, 9C, 9D, 9E, 9F side is also plane, and the processing of permanent magnet 9 is also easily carried out.
Further, magnet installed surface 11 closely bonds with the lower surface entirety of permanent magnet 9A, 9B, 9C, 9D, 9E, 9F, compared with when installing between each curved surface, and can fixed permanent magnet 9A, 9B, 9C, 9D, 9E, 9F securely.
And, magnet installed surface 11 is formed by the plane that the tangent plane of the periphery with yoke portion 8 is parallel, in addition, circumferential limiting unit 13, axial limiting unit 14 extend to the direction vertical with magnet installed surface 11 and formed, and thus easily can form magnet mounting groove 10 by Milling Process.
Execution mode 2
Figure 14 is the cutaway view of the major part of the rotor 2 of the permanent magnet motor representing embodiments of the present invention 2.
In this embodiment, yoke portion 8C has the 1st wall portion 21A and the 2nd wall portion 21B, tilts in two sections, is configured with 2 permanent magnets 9 at each section.
Other structure is identical with the permanent magnet motor of execution mode 1, and act on, effect is also identical.
Execution mode 3
Figure 15 is the cutaway view of the major part of the rotor 2 of the permanent magnet motor representing embodiments of the present invention 3.
In this embodiment, yoke portion 8D has the 1st wall portion 22A, the 2nd wall portion 22B, the 3rd wall portion 22C and the 4th wall portion 22D, tilts in four sections, is configured with 1 permanent magnet 9 at each section.
Other structure is identical with the permanent magnet motor of execution mode 1, and act on, effect is also identical.
In addition, in the respective embodiments described above, describe permanent magnet motor as permanent magnet rotary electric machine, but the present invention also can be applicable to permanent magnet generator.
Further, magnet installed surface also can be curve form.
Label declaration
1 stator; 2 rotors; 3 coils; 4 iron cores; 5 electric wires; 6 teeth portion; 7 rotating shafts; 8,8A, 8B, 8C, 8D yoke portion; 9 permanent magnets; 9A the 1st permanent magnet; 9B the 2nd permanent magnet; 9C the 3rd permanent magnet; 9D the 4th permanent magnet; 9E the 5th permanent magnet; 9F the 6th permanent magnet; 10 magnet mounting grooves; 11 magnet installed surfaces; 11A the 1st magnet installs face; 11B the 2nd magnet installs face; 11C the 3rd magnet installs face; 12,20,20A wall; 12A, 21A, 22A the 1st wall portion; 12B, 21B, 22B the 2nd wall portion; 12C, 22C the 3rd wall portion; 13 circumferential limiting units; 14 axial limiting units; 22D the 4th wall portion.
Claims (6)
1. a permanent magnet rotary electric machine, the stator that this permanent magnet rotary electric machine has ring-type and the rotor that can be supported on rotatably inside this stator, described rotor has the yoke portion of ring-type and is fixed on multiple permanent magnets of outer peripheral face in this yoke portion, it is characterized in that
In the periphery in described yoke portion, by the magnet installed surface extended along axis direction and the side of wall formed in the both sides of the circumference of this magnet installed surface of fixing described permanent magnet, formation magnet mounting groove,
Described magnet installed surface is formed by installing face at the magnet of the multistage of the stepped displacement of circumference successively along axis direction,
Described wall is made up of multiple wall portion of separating at axis direction,
The side of described wall portion is limitation arrangement installs the circumference movement of the described permanent magnet of face circumferential limiting unit at described magnet, and end face is the axial limiting unit of the axis direction movement limiting described permanent magnet,
The permanent magnet being configured in pars intermedia when described magnet installed surface is configured with the described permanent magnet of the homopolarity of more than 4 continuously abuts with described axial limiting unit, with limit due to the adjacent permanent magnet of described axis direction repulsion and move in the axial direction.
2. permanent magnet rotary electric machine according to claim 1, is characterized in that, described magnet installed surface is formed by the plane that the tangent plane of the periphery with described yoke portion is parallel.
3. permanent magnet rotary electric machine according to claim 2, is characterized in that, it is same that magnet described in each installs face.
4. the permanent magnet rotary electric machine according to any one in claims 1 to 3, is characterized in that, described yoke portion utilizes to be cast into circular cast component as the cast iron of iron class alloy or steel to be formed for raw material.
5. permanent magnet rotary electric machine according to claim 3, is characterized in that, described circumferential limiting unit extends to the direction vertical with described magnet installed surface with described axial limiting unit and formed.
6. a manufacture method for permanent magnet rotary electric machine according to claim 5, is characterized in that, the manufacture method of this permanent magnet rotary electric machine comprises following steps:
Along axis direction and axis being parallel, Milling Process is carried out to the periphery of endless member, forms described magnet installed surface and described circumferential limiting unit; And
Tangentially Milling Process is carried out to the periphery of described endless member, forms described axial limiting unit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2012/066245 WO2014002181A1 (en) | 2012-06-26 | 2012-06-26 | Permanent-magnet rotating electrical machine and method of manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104380572A true CN104380572A (en) | 2015-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280073979.4A Pending CN104380572A (en) | 2012-06-26 | 2012-06-26 | Permanent-magnet rotating electrical machine and method of manufacture thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2014002181A1 (en) |
| CN (1) | CN104380572A (en) |
| WO (1) | WO2014002181A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016161693A1 (en) * | 2015-04-09 | 2016-10-13 | 深圳市今盛科技有限公司 | Rotor and motor having rotor |
| CN109428417A (en) * | 2017-08-24 | 2019-03-05 | 发那科株式会社 | Rotor and rotating electric machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10720804B2 (en) | 2014-06-27 | 2020-07-21 | General Electric Company | Permanent magnet machine with segmented sleeve for magnets |
| US10381889B2 (en) | 2014-06-27 | 2019-08-13 | General Electric Company | Permanent magnet machine with segmented sleeve for magnets |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2672178B2 (en) * | 1990-05-15 | 1997-11-05 | ファナック株式会社 | Rotor structure of synchronous motor |
| JPH05161287A (en) * | 1991-11-29 | 1993-06-25 | Fanuc Ltd | Rotor of synchronous apparatus |
| JP4781706B2 (en) * | 2005-04-15 | 2011-09-28 | 三菱電機株式会社 | Permanent magnet type rotating electrical machine and method for manufacturing the rotor |
| JP2008148447A (en) * | 2006-12-11 | 2008-06-26 | Nsk Ltd | Motor for electric power steering device |
-
2012
- 2012-06-26 JP JP2014522264A patent/JPWO2014002181A1/en active Pending
- 2012-06-26 CN CN201280073979.4A patent/CN104380572A/en active Pending
- 2012-06-26 WO PCT/JP2012/066245 patent/WO2014002181A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016161693A1 (en) * | 2015-04-09 | 2016-10-13 | 深圳市今盛科技有限公司 | Rotor and motor having rotor |
| US10644577B2 (en) | 2015-04-09 | 2020-05-05 | Shenzhen Gam Shine Technology Co., Limited | Rotor and motor having rotor |
| CN109428417A (en) * | 2017-08-24 | 2019-03-05 | 发那科株式会社 | Rotor and rotating electric machine |
| CN109428417B (en) * | 2017-08-24 | 2023-05-02 | 发那科株式会社 | Rotor and rotating electrical machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014002181A1 (en) | 2014-01-03 |
| JPWO2014002181A1 (en) | 2016-05-26 |
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Application publication date: 20150225 |