WO2019049656A1 - 鉄心とその鉄心を用いたモータ - Google Patents
鉄心とその鉄心を用いたモータ Download PDFInfo
- Publication number
- WO2019049656A1 WO2019049656A1 PCT/JP2018/030884 JP2018030884W WO2019049656A1 WO 2019049656 A1 WO2019049656 A1 WO 2019049656A1 JP 2018030884 W JP2018030884 W JP 2018030884W WO 2019049656 A1 WO2019049656 A1 WO 2019049656A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- iron core
- laminate
- electromagnetic steel
- steel sheet
- laminated body
- Prior art date
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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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/245—Magnetic cores made from sheets, e.g. grain-oriented
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/25—Magnetic cores made from strips or ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
- H01F27/263—Fastening parts of the core together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/02—Cores, Yokes, or armatures made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/04—Cores, Yokes, or armatures made from strips or ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/02—Details of the magnetic circuit characterised by the magnetic material
-
- 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
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- 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
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
-
- 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
-
- 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
- H02K15/022—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies with salient poles or claw-shaped poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F3/00—Cores, Yokes, or armatures
- H01F3/10—Composite arrangements of magnetic circuits
- H01F2003/106—Magnetic circuits using combinations of different magnetic materials
-
- 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
- H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
- H02K1/2733—Annular 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
- H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
Definitions
- the present invention relates to an iron core and a motor using the iron core.
- the present invention relates to an iron core laminated with alloy thin strips and a motor using the iron core as a stator.
- FIG. 10 is a perspective view of the split core described in Patent Document 1. As shown in FIG. The electromagnetic steel sheets are laminated, and the laminated body 31 which is crimped and the laminated body 32 in which a plurality of amorphous thin ribbons are laminated and adhered by an adhesive are laminated and fixed by an adhesive.
- FIG. 11A-11C illustrate the fastening portion (bolts 42 and washers 43) of the laminate of alloy ribbons.
- 11A is a cross-sectional view of the fastening portion
- FIG. 11B is a cross-sectional enlarged view of the vicinity of the fastening portion
- FIG. 11C is a top enlarged view of the vicinity of the fastening portion.
- the laminate 41 of the alloy ribbons is fastened by the bolt 42 that has reached the metal substrate 44 through the through hole 45.
- FIG. 11B which is an enlarged cross-sectional view
- the alloy thin ribbons 46 fastened by the bolts 42 closely adhere in the stacking direction without a gap.
- the alloy thin strip 46 has a low rigidity, and therefore, the gap 48 is formed to try to spread.
- a deformed portion 47 occurs in the alloy thin strip 46 in the vicinity of the periphery of the washer 43, and the deformation is larger as the end (upper surface) in the stacking direction of the laminated body 41 of the alloy thin strip 46 is.
- FIG. 11C which is an upper surface enlarged view
- the alloy ribbon 46 is broken, such as broken.
- the magnetic path at the time of driving becomes discontinuous unlike the design, and the magnetic characteristics deteriorate.
- the magnetic characteristics deteriorate due to the stress generated by the deformation.
- An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to provide an iron core and a motor which do not damage the magnetic body at the time of fastening and fixing and do not lower the magnetic characteristics.
- an iron core according to the present invention comprises a laminate of a plurality of fixed electromagnetic steel plates, a laminate of alloy ribbons sandwiched between the electromagnetic steel plates, the electromagnetic steel plate and the alloy A fastening mechanism which penetrates a laminate of thin ribbons and a mount, and the laminate of the electromagnetic steel sheet and the alloy ribbon is fastened to the mount by the fastening mechanism. Furthermore, a motor including a rotor and the iron core is used.
- the iron core and the motor of the present invention it is possible to prevent damage or deterioration of the magnetic properties at the time of fastening of the assembly.
- FIG. 1A is a side view of a motor using the iron core of the first embodiment.
- FIG. 1B is a top view of a motor using the iron core of the first embodiment.
- FIG. 2 is a cross-sectional view taken along line A-A 'of FIG. 1B.
- FIG. 3A is a side view of the laminated body of the magnetic steel sheet of Embodiment 1.
- FIG. 3B is a top view of the laminated body of the magnetic steel sheets of Embodiment 1 of FIG. 3A.
- FIG. 4 is a cross-sectional view after caulking between B-B 'of the laminated body of the magnetic steel sheet of Embodiment 1 of FIG. 3B.
- FIG. 1A is a side view of a motor using the iron core of the first embodiment.
- FIG. 1B is a top view of a motor using the iron core of the first embodiment.
- FIG. 2 is a cross-sectional view taken along line A-A 'of FIG. 1B.
- FIG. 5 is a cross-sectional view of a plane portion after removing the protrusions in the laminate of the magnetic steel sheet of Embodiment 1.
- FIG. 6A is a side view of a laminate of a magnetic steel sheet according to a second embodiment.
- 6B is a top view of a laminated body of electromagnetic steel sheets in Embodiment 2.
- FIG. 7A is a surface view of the vicinity of a weld after removal of a protrusion of a laminate of a magnetic steel sheet according to a second embodiment.
- FIG. 7B is a side view of the vicinity of a weld portion of the laminated body of the magnetic steel sheets in Embodiment 2.
- FIG. 8A is a side view of a laminated body of a magnetic steel sheet of a third embodiment.
- FIG. 8B is a top view of a laminate of a magnetic steel sheet of a third embodiment.
- FIG. 9A is a side view of a motor using the iron core of the fourth embodiment.
- FIG. 9B is a top view of a motor using the iron core of the fourth embodiment.
- FIG. 10 is a perspective view of a conventional split core described in Patent Document 1.
- FIG. 11A is a cross-sectional view of a fastening portion of a conventional laminate of an alloy ribbon.
- FIG. 11B is a partially enlarged cross-sectional view of a fastening portion of a conventional laminate of an alloy ribbon.
- FIG. 11C is a top view of a fastening portion of a conventional laminate of an alloy ribbon.
- FIG. 1A is a side view of a motor using an iron core according to Embodiment 1 of the present invention.
- FIG. 1B is a top view of FIG. 1A.
- the rigidity and the strength are insufficient with one electromagnetic steel plate 7, so the laminated body 2 of the electromagnetic steel plates 7 is formed to sandwich the laminated body 3 of the alloy ribbon 3a from above and below.
- the alloy ribbon 3a may be any of iron-based amorphous ribbons not subjected to heat treatment, amorphous ribbons subjected to heat treatment, or ribbons having nanocrystalline grains obtained by heat treatment of amorphous ribbons.
- the amorphous ribbon is heat-treated to form nanocrystalline grains, the soft magnetic characteristics required for the stator are excellent.
- the heat-treated amorphous ribbon has a drawback that it has low toughness and is easily cracked only by receiving a heat history.
- an embodiment of the alloy ribbon 3a having nanocrystalline grains will be described.
- Windings 9 are made from above projections called teeth 7a of the magnetic steel sheet 7 to be used as a stator.
- the stator is tightened with a bolt 4 in the stacking direction via the spring washer 5 and the washer 6, and is fixed to the mount 8.
- the rotor 10 When the rotor 10 is inserted into the central opening of the laminated portion 1 and the winding 9 is energized in a predetermined manner, the rotor 10 rotates and operates as a motor.
- FIG. 2 is a cross-sectional view taken along line A-A 'in FIG. 1B.
- the laminated body 3 of the alloy thin strip 3a is held up and down by the laminated body 2 of the electromagnetic steel plates 7 formed of the five electromagnetic steel plates 7, and is fastened and fixed to the mount 8 with the bolts 4.
- FIG. 3A is a side view of the laminate 2 of the electromagnetic steel sheet 7.
- FIG. 3B is a top view of FIG. 3A.
- the laminated body 2 of the magnetic steel plates 7 is fastened and integrated by four caulking portions 12. When fastening through the bolt 11 through the through hole 11, compressive and torsional stresses are generated in the laminated body 2 of the magnetic steel sheet 7.
- the rigidity of the laminate 2 of the electromagnetic steel sheet 7 is higher than that of the laminate 2 of the electromagnetic steel sheet 7 due to the contribution of the caulking portion 12 as compared with the case where there is no caulking, so that the compressive deformation becomes smaller. In addition, almost no twisting occurs due to rotation.
- FIG. 4 is a cross-sectional view of the crimped portion 12 between B-B 'of FIG. 3B.
- the depressions 13 and the projections 14 are produced. If the projection 14 is brought into contact with the laminate 3 of the alloy thin strip 3a and the bolt 4 is tightened, the projection 14 is pressed against the thin strip and the laminate 3 of the alloy thin strip 3a is broken. Remove
- FIG. 5 is a cross-sectional view after the projection 14 of FIG. 4 is removed by cutting to reveal the flat portion 15.
- the flat portion 15 formed by cutting has cutting marks 16.
- the surface roughness does not damage the ribbon if the unevenness is several ⁇ m or less (10 ⁇ m or less). Since the surface of the electromagnetic steel sheet 7 other than the cutting marks 16 is in a rolled state, the surface roughness is often smaller than the cutting marks 16 and often different in color. The maximum is about 1 ⁇ m or less.
- the plate thickness of the electromagnetic steel plate 7 in the flat part 15 becomes thin, if it is connected, there is no problem with integration of the electromagnetic steel plate 7.
- FIG. 6A is a side view of the laminate 2 of the electromagnetic steel sheets 7 in the iron core of the second embodiment of the present invention.
- 6B is a top view of FIG. 6A.
- 6A and 6B differ from Embodiment 1 in that the laminate 2 is integrated by welding of the end face of the laminate 2. Matters not described are the same as in the first embodiment.
- a welded portion 17 exists in the laminate 2 of the electromagnetic steel sheets 7 after welding.
- the welded portion 17 is likely to have a protrusion 18 formed by solidification of the molten metal on the start side, particularly on the end side. That is, the projections 18 are likely to remain on the upper and lower surfaces of the laminate 2. As in the first embodiment, this projection 18 is also removed by cutting.
- FIG. 7A is a surface view of the vicinity of the weld portion 17 of the laminated body 2 of the electromagnetic steel sheet 7 after the projection 18 of FIG. 6A is removed.
- FIG. 7B is a side view of FIG. 7A.
- the welded portion 17 melted in a wedge shape from the surface leaves a boundary with the non-melted portion, and has cutting marks 19 on the surface.
- a cutting mark 19 formed by cutting across the non-melted portion by cutting remains around the weld portion 17 in an atypical shape. Since the cutting marks 19 remain only on the pole surface of the laminate 2 of the electromagnetic steel sheet 7, only the welds 17 having no cutting marks 19 are observed in the side view of FIG. 7B. By removing the projections 18, it is possible to prevent damage to the alloy ribbon 3a.
- the surface asperities of the cutting marks 19 are several ⁇ m or less, specifically 10 ⁇ m or less.
- FIG. 8A is a side view of the laminate 2 of the electromagnetic steel sheets 7 in the iron core of the third embodiment of the present invention.
- FIG. 8B is a top view of FIG. 8A. Matters that are not described are the same as in the above embodiment.
- the adhesive 20 is provided and fixed on the entire surface of the laminated end face.
- the adhesive 20 does not generate a protrusion on the flat surface side unless it protrudes from the end face of the lamination up and down, but if a protrusion is generated, it is removed as in the first and second embodiments. Since there is no conduction in the adhesive 20, the interlayer insulation of the electrical steel sheet 7 is maintained, and the motor efficiency is not adversely affected. Since the entire surface of the laminated end face can be bonded, strong fixing can be performed.
- the adhesive 20 need not necessarily be provided on the entire surface of the laminated end face.
- FIG. 9A is a side view of a motor using an iron core in Embodiment 4 of the present invention.
- FIG. 9B is a top view of FIG. 9A. Matters that are not described are the same as in the above embodiment.
- Embodiment 9A to 9B are different from those of Embodiment 1 in that an amorphous thin film not subjected to heat treatment is formed between the laminated body 22 of the magnetic steel sheet 7 and the laminated body 23 of the alloy ribbon 23a having nanocrystalline grains by heat treatment. It is providing the layered product 24 of a belt.
- the non-heat-treated amorphous ribbon is inferior to the electromagnetic steel sheet 7 although its soft magnetic properties are inferior to those of the nanocrystal-containing ribbon.
- the toughness to an external force of the non-heat-treated amorphous ribbon is superior to that of the ribbon having heat-treated nanocrystalline grains.
- the number of electromagnetic steel sheets 7 is reduced, and the thickness thereof is replaced with an amorphous thin strip not subjected to heat treatment, thereby stacking the alloy thin strip 23a having nanocrystalline grains without changing the thickness of the stacked portion 21.
- the body 23 it is possible to suppress a decrease in motor efficiency.
- the number of the electromagnetic steel plates 7 of the laminated body 22 is reduced from five to four in Embodiment 1 to obtain a laminated body 22.
- the thickness of the non-heat-treated amorphous thin strip is about 1/10 of that of the magnetic steel sheet 7, so 10 sheets of non-heat-treated amorphous thin ribbon corresponding to the reduced thickness of the reduced magnetic steel sheet 7 are stacked Thus, a laminate 24 of amorphous ribbon is obtained.
- the thickness of the laminate 23 of the alloy ribbon 23a having nanocrystalline grains is not changed.
- the motor efficiency could be made equal or higher without damaging the laminate 23 of the alloy ribbon 23a having nanocrystalline grains.
- the heat-treated ribbon may be an amorphous ribbon.
- the rigidity of the iron core can be secured and the shape can be stabilized at the time of fastening and fixing. Therefore, the iron core according to the present invention is useful as a stator of a motor. Furthermore, the iron core according to the present invention can be applied not only to motors but also to applications of magnetically applied electronic components such as transformers.
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- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
図1Aは、本発明の実施の形態1における鉄心を用いたモータの側面図である。図1Bは、図1Aの上面図である。
図6Aは、本発明の実施の形態2の鉄心における電磁鋼板7の積層体2の側面図である。図6Bは、図6Aの上面図である。図6Aと図6Bとが、実施の形態1と異なるのは、積層体2の端面の溶接により積層体2を一体化したことである。記載しない事項は上記実施の形態1と同様である。
図8Aは、本発明の実施の形態3の鉄心における電磁鋼板7の積層体2の側面図である。図8Bは、図8Aの上面図である。記載しない事項は上記実施の形態と同様である。
図9Aは、本発明の実施の形態4における鉄心を用いたモータの側面図である。図9Bは、図9Aの上面図である。記載しない事項は上記実施の形態と同様である。
上記実施の形態は組み合わせすることができる。
2 積層体
3 積層体
3a 合金薄帯
4 ボルト
5 スプリングワッシャ
6 ワッシャ
7 電磁鋼板
7a ティース
8 取付台
9 巻線
10 回転子
11 貫通穴
12 カシメ部
13 窪み
14 突起
15 平面部
16 切削痕
17 溶接部
18 突起
19 切削痕
20 接着剤
21 積層部
22 積層体
23 積層体
23a 合金薄帯
24 非晶質薄帯の積層体
31 積層体
32 積層体
41 合金薄帯の積層体
42 ボルト
43 ワッシャ
44 金属基板
45 貫通穴
46 合金薄帯
47 変形部
48 隙間
Claims (11)
- 締結手段により固定された複数の電磁鋼板の積層体と、
前記電磁鋼板の積層体にはさまれた合金薄帯の積層体と、
前記電磁鋼板ならびに合金薄帯の積層体を貫通する締結機構と、
取付台と、から成り、
前記複数の電磁鋼板の積層体と合金薄帯の積層体とを前記締結機構で取付台に締め付けた鉄心。 - 前記電磁鋼板の積層体は、表面に表面粗さが異なる領域を有する請求項1記載の鉄心。
- 前記電磁鋼板の積層体は、前記電磁鋼板の積層体の端面に溶接部を有し、前記電磁鋼板の積層体の表面に、前記溶接部とその周辺に切削痕とを有する請求項1記載の鉄心。
- 前記電磁鋼板の積層体は、前記電磁鋼板の積層体の端面に接着剤を有する請求項1に記載の鉄心。
- 前記合金薄帯は、ナノ結晶粒を有する請求項1に記載の鉄心。
- 前記合金薄帯は、非晶質である請求項1に記載の鉄心。
- 前記合金薄帯の積層体は、熱処理した合金薄帯の積層体の上下を、熱処理しない非晶質合金薄帯の積層体ではさんだ構造である請求項1に記載の鉄心。
- 前記熱処理した合金薄帯は、ナノ結晶粒を有する請求項7記載の鉄心。
- 前記締結機構に段付きボルトを用いた請求項1に記載の鉄心。
- 前記締結機構は、ボルトと前記ボルトの外周に円筒管を設けた請求項1に記載の鉄心。
- 回転子と、
請求項1に記載の鉄心と、を含むモータ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18842695.1A EP3683930A4 (en) | 2017-09-11 | 2018-08-22 | IRON CORE AND MOTOR USING LEDIT IRON CORE |
JP2018564425A JP6712726B2 (ja) | 2017-09-11 | 2018-08-22 | 鉄心とその鉄心を用いたモータ |
CN201880003272.3A CN109792171B (zh) | 2017-09-11 | 2018-08-22 | 铁芯和使用了该铁芯的马达 |
US16/278,527 US11146126B2 (en) | 2017-09-11 | 2019-02-18 | Iron core and motor using iron core |
Applications Claiming Priority (2)
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JP2017173619 | 2017-09-11 | ||
JP2017-173619 | 2017-09-11 |
Related Child Applications (1)
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US16/278,527 Continuation US11146126B2 (en) | 2017-09-11 | 2019-02-18 | Iron core and motor using iron core |
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WO2019049656A1 true WO2019049656A1 (ja) | 2019-03-14 |
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PCT/JP2018/030884 WO2019049656A1 (ja) | 2017-09-11 | 2018-08-22 | 鉄心とその鉄心を用いたモータ |
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US (1) | US11146126B2 (ja) |
EP (1) | EP3683930A4 (ja) |
JP (1) | JP6712726B2 (ja) |
CN (1) | CN109792171B (ja) |
WO (1) | WO2019049656A1 (ja) |
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CN109642265B (zh) * | 2017-02-14 | 2021-06-18 | 松下电器产业株式会社 | 薄带零件及其制造方法、以及使用薄带零件的电动机 |
JP7347197B2 (ja) * | 2019-12-19 | 2023-09-20 | トヨタ自動車株式会社 | 回転電機コアの製造方法および製造装置 |
JP2021184654A (ja) * | 2020-05-21 | 2021-12-02 | ミネベアミツミ株式会社 | モータ |
Citations (7)
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JPS5217603A (en) * | 1975-08-01 | 1977-02-09 | Hitachi Ltd | Motor |
JPS52137610A (en) * | 1976-05-12 | 1977-11-17 | Yaskawa Denki Seisakusho Kk | Core molding method |
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- 2018-08-22 JP JP2018564425A patent/JP6712726B2/ja active Active
- 2018-08-22 WO PCT/JP2018/030884 patent/WO2019049656A1/ja unknown
- 2018-08-22 CN CN201880003272.3A patent/CN109792171B/zh active Active
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Also Published As
Publication number | Publication date |
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US11146126B2 (en) | 2021-10-12 |
JP6712726B2 (ja) | 2020-06-24 |
CN109792171A (zh) | 2019-05-21 |
EP3683930A1 (en) | 2020-07-22 |
EP3683930A4 (en) | 2020-12-02 |
US20190181700A1 (en) | 2019-06-13 |
CN109792171B (zh) | 2021-03-30 |
JPWO2019049656A1 (ja) | 2019-11-07 |
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