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1. WO2016152975 - RARE-EARTH MAGNET AND LINEAR MOTOR USING SAME

Publication Number WO/2016/152975
Publication Date 29.09.2016
International Application No. PCT/JP2016/059390
International Filing Date 24.03.2016
IPC
H02K 41/03 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
41Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
02Linear motors; Sectional motors
03Synchronous motors; Motors moving step by step; Reluctance motors
H01F 1/057 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
032of hard-magnetic materials
04metals or alloys
047Alloys characterised by their composition
053containing rare earth metals
055and magnetic transition metals, e.g. SmCo5
057and IIIa elements, e.g. Nd2Fe14B
H01F 7/02 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
7Magnets
02Permanent magnets
H02K 15/03 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
15Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
02of stator or rotor bodies
03having permanent magnets
CPC
H01F 1/0577
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
1Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
01of inorganic materials
03characterised by their coercivity
032of hard-magnetic materials
04metals or alloys
047Alloys characterised by their composition
053containing rare earth metals
055and magnetic transition metals, e.g. SmCo5
057and IIIa elements, e.g. Nd2Fe14B
0571in the form of particles, e.g. rapid quenched powders or ribbon flakes
0575pressed, sintered or bonded together
0577sintered
H01F 13/003
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
13Apparatus or processes for magnetising or demagnetising
003Methods and devices for magnetising permanent magnets
H01F 41/0273
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils, or magnets
0253for manufacturing permanent magnets
0273Imparting anisotropy
H01F 41/028
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
41Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
02for manufacturing cores, coils, or magnets
0253for manufacturing permanent magnets
0273Imparting anisotropy
028Radial anisotropy
H01F 7/02
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
7Magnets
02Permanent magnets ; [PM]
H02K 15/03
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
15Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
02of stator or rotor bodies
03having permanent magnets
Applicants
  • 日東電工株式会社 NITTO DENKO CORPORATION [JP]/[JP]
Inventors
  • 藤原 誠 FUJIHARA Makoto
  • 星野 利信 HOSHINO Toshinobu
  • 齊藤 正一朗 SAITO Shoichiro
  • 藤川 憲一 FUJIKAWA Kenichi
Agents
  • 西島 孝喜 NISHIJIMA Takaki
Priority Data
2015-06108124.03.2015JP
2016-02277009.02.2016JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RARE-EARTH MAGNET AND LINEAR MOTOR USING SAME
(FR) AIMANT DE TERRES RARES ET MOTEUR LINÉAIRE L'UTILISANT
(JA) 希土類磁石及びそれを用いたリニアモータ
Abstract
(EN)
Provided are: a rare-earth magnet capable of achieving a large amount of magnetic flux without using a back yoke; and a linear motor employing a rare-earth permanent magnet as a movable element. This rare-earth permanent magnet-forming sintered compact for forming a permanent magnet is made by being integrally sintered and molded into a predetermined three-dimensional shape having a lengthwise cross-sectional shape including: a first surface extending in the length direction; a second surface located at a distance from the first surface in the thickness direction and extending in the length direction; and end surfaces at respective end sections in the length direction. In this sintered compact, the axis of easy magnetization of magnet material particles included in a central region is arranged so as to be oriented along an arch-shaped path. In a first end-section region, the axis of easy magnetization of the magnet material particles is arranged so as to be oriented along a path that enters from the first surface, passes through the interior of the sintered compact and is directed toward the second surface. In a second end-section region, the axis of easy magnetization of the magnet material particles is arranged so as to be oriented along a path that enters from the second surface, passes through the interior of the sintered compact and is directed toward the first surface.
(FR)
L'invention concerne un aimant de terres rares permettant d'obtenir une grande quantité de flux magnétique sans utiliser de culasse arrière ; et un moteur linéaire utilisant un aimant permanent de terres rares en tant qu'élément mobile. Un compact fritté de formation d'aimant permanent de terres rares pour former un aimant permanent est réalisé intégralement par frittage et moulage selon une forme tridimensionnelle prédéterminée présentant une forme de section transversale dans le sens de la longueur comprenant : une première surface s'étendant dans le sens de la longueur ; une seconde surface située à une certaine distance de la première surface dans le sens de l'épaisseur et s'étendant dans le sens de la longueur ; et des surfaces d'extrémité sur des sections d'extrémité respectives dans le sens de la longueur. Dans le compact fritté, l'axe de magnétisation facile de particules de matériau magnétique compris dans une région centrale est agencé de manière à être orienté le long d'un trajet en forme d'arc. Dans une première région de section d'extrémité, l'axe de magnétisation facile des particules de matériau magnétique est agencé de manière à être orienté le long d'un trajet qui entre par la première surface, traverse l'intérieur du compact fritté et est dirigé vers la seconde surface. Dans une seconde région de section d'extrémité, l'axe de magnétisation facile des particules de matériau magnétique est agencé de manière à être orienté le long d'un trajet qui entre par la seconde surface, traverse l'intérieur du compact fritté et est dirigé vers la première surface.
(JA)
 バックヨークを使用せずに高い磁束量を実現できる希土類磁石及び希土類永久磁石を可動子に使用したリニアモータを提供する。該永久磁石を形成する希土類永久磁石形成用焼結体は、長さ方向に延びる第1の表面と、該第1の表面から厚み方向に間隔をもった位置にあり長さ方向に延びる第2の表面と、長さ方向両端部の端面とを有する長さ方向断面形状をもつ所定の立体形状に、一体に焼結成形されたものである。この焼結体は、中央領域に含まれる磁石材料粒子の磁化容易軸が、アーチ状経路に沿って指向するように配向される。また、第1の端部領域においては、磁石材料粒子の磁化容易軸が第1の表面から焼結体の内部に入り、第2の表面に向けられる経路に沿って指向するように配向される。第2の端部領域においては、磁石材料粒子の磁化容易軸が第2の表面から焼結体の内部に入り、第1の表面に向けられる経路に沿って指向するように配向される。
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