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1. WO2022070445 - ELECTRIC MOTOR

Publication Number WO/2022/070445
Publication Date 07.04.2022
International Application No. PCT/JP2020/048419
International Filing Date 24.12.2020
IPC
H02K 1/16 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
1Details of the magnetic circuit
06characterised by the shape, form or construction
12Stationary parts of the magnetic circuit
16Stator cores with slots for windings
F16C 32/04 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
H02K 7/08 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
08Structural association with bearings
H02K 7/09 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
08Structural association with bearings
09with magnetic bearings
CPC
F16C 32/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
H02K 1/16
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
1Details of the magnetic circuit
06characterised by the shape, form or construction
12Stationary parts of the magnetic circuit
16Stator cores with slots for windings
H02K 7/08
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
08Structural association with bearings
H02K 7/09
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
7Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
08Structural association with bearings
09with magnetic bearings
Applicants
  • 日本電産株式会社 NIDEC CORPORATION [JP]/[JP]
Inventors
  • 廣瀬 健太郎 HIROSE, Kentaro
Priority Data
2020-16362029.09.2020JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRIC MOTOR
(FR) MOTEUR ÉLECTRIQUE
(JA) 電動機
Abstract
(EN) One embodiment of this electric motor comprises: a rotor; and a stator that radially opposes the rotor with a gap therebetween. The stator comprises: a stator iron core on which a plurality of teeth that protrude to the rotor side are arranged in the circumferential direction; and a winding disposed between the teeth. Each of the teeth includes: a tooth body; and an umbrella that extends in the circumferential direction on the rotor-side distal end of the tooth body. When an angle formed by a line which passes through the center of the tooth body when viewed from the axial direction, and a line that connects a rotation axis and the distal end of the umbrella provided to the same tooth as that of the tooth body is referred to as an umbrella angle, the umbrella angle of at least one of the teeth is 23 degrees or more. An axial direction force is applied to the rotor by a magnetic flux generated by supplying a magnetic field current to the winding and a magnetic flux generated by a first permanent magnet and a second permanent magnet.
(FR) Un mode de réalisation de ce moteur électrique comprend : un rotor ; et un stator qui s'oppose radialement au rotor avec un espace entre eux. Le stator comprend : un noyau de fer de stator sur lequel une pluralité de dents qui font saillie vers le côté rotor sont agencées dans la direction circonférentielle ; et un enroulement placé entre les dents. Chacune des dents comprend : un corps de dent ; et un parapluie qui s'étend dans la direction circonférentielle sur l'extrémité distale côté rotor du corps de dent. Lorsqu'un angle formé par une ligne qui passe à travers le centre du corps de dent lorsqu'il est vu depuis la direction axiale, et une ligne qui relie un axe de rotation et l'extrémité distale du parapluie équipant la même dent que celle du corps de dent est désigné angle de parapluie, l'angle de parapluie d'au moins l'une des dents est d'au moins 23 degrés. Une force de direction axiale est appliquée au rotor par un flux magnétique généré en fournissant un courant de champ magnétique à l'enroulement et un flux magnétique généré par un premier aimant permanent et un second aimant permanent.
(JA) 本発明の電動機の一つの態様は、回転子と、回転子に対して径方向にギャップを隔てて対向した固定子と、を備える。固定子は、回転子側に突出したティースが周方向に複数設置された固定子鉄心と、各ティースの間に配置された巻線と、を備える。ティースは、ティース本体と、ティース本体の回転子側の先端に、周方向に延びるアンブレラと、を備える。軸方向から見て各ティース本体の中心を通る線と、各ティース本体と同一のティースに備わるアンブレラの先端と回転軸とを結ぶ線とがなす角度をアンブレラ角としたとき、ティースの少なくとも一つにおいて、アンブレラ角が23度以上である。巻線に界磁電流を流すことにより発生する磁束と第1の永久磁石および第2の永久磁石により発生する磁束とにより、回転子に対して軸方向の力が発生する。
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