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1. EP2953240 - ROTOR AND MOTOR

官庁
欧州特許庁(EPO)
出願番号 14745394
出願日 17.01.2014
公開番号 2953240
公開日 09.12.2015
公報種別 B1
IPC
H02K 1/27
H電気
02電力の発電,変換,配電
K発電機,電動機
1磁気回路の細部
06形,構成または構造を特徴とするもの
22磁気回路の回転部分
27永久磁石付回転子鉄心
CPC
H02K 1/2773
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
1Details of the magnetic circuit
06characterised by the shape, form or construction
22Rotating parts of the magnetic circuit
27Rotor cores with permanent magnets
2706Inner rotor
272where the magnetisation axis of the magnets is radial or tangential
274consisting of a plurality of circumferentially positioned magnets
2753consisting of magnets or groups of magnets arranged with alternating polarity
276Magnets embedded in the magnetic core
2766having a flux concentration effect
2773consisting of tangentially magnetized radial magnets
H02K 2201/03
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
2201Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
03Machines characterised by aspects of the air-gap between rotor and stator
H02K 2213/03
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
2213Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
03Machines characterised by numerical values, ranges, mathematical expressions or similar information
出願人 MABUCHI MOTOR CO
発明者 WAKITA TADAYUKI
指定国 (国コード)
優先権情報 2013017976 31.01.2013 JP
発明の名称
(DE) ROTOR UND MOTOR
(EN) ROTOR AND MOTOR
(FR) ROTOR ET MOTEUR
要約
(EN)
A rotor includes: a circular rotor core 26; and a plurality of ¸ magnets. The ¸ magnets 28 are contained in a magnet holding sections 26b such that the same magnetic pole of one magnet as that of another magnet adjacent to said one magnet faces the same magnet pole of the adjacent magnet in circumferential directions of the rotor core. Given that the surface area of a surface of the ¸ magnet 28 having a magnetic pole is denoted by S 1 [mm 2 ], the surface area of an outer circumferential surface of the rotor core is denoted by S 2 [mm 2 ], the number of magnetic poles of the rotor is denoted by P, the maximum outside diameter of the rotor core is denoted by Dr [mm], and the thickness of the plate-like magnet in a circumferential direction of the rotor core is denoted by Lm [mm], the following inequalities (1) and (2) are satisfied: S 1 > S 2 / P 0.665 × 10 - 4 × P 2 - 0.28 × 10 - 2 × P + 0.577 × 10 - 1 < Lm / Dr < 3.38 × 10 - 4 × P 2 - 1.86 × 10 - 2 × P + 3.36 × 10 - 1

(FR)
La présente invention concerne un rotor (12) qui est pourvu d'un noyau de rotor circulaire (26) et d'une pluralité d'aimants θ (28). Les aimants θ (28) sont logés dans des sections logements d'aimants (26b) pour que les mêmes pôles magnétiques que les pôles magnétiques d'aimants adjacents soient opposés les uns aux autres dans la direction circonférentielle de l'aimant de rotor. Lorsque S1 [mm2] est la superficie de la surface qui comporte le pôle magnétique des aimants θ (28), S2 [mm2] est la superficie de la surface périphérique extérieure de l'aimant de rotor, P est le nombre de pôles magnétiques du rotor, Dr [mm] est le diamètre extérieur maximum de l'aimant de rotor, et Lm [mm] est l'épaisseur d'un aimant en forme de plaque dans la direction circonférentielle de l'aimant de rotor, le rotor satisfait à S1 > S2 / P... formule (1), et 0,665 × 10-4 × P2 − 0,28 × 10-2 × P + 0,577 × 10-1 < (Lm / Dr) < 3,38 × 10-4 × P2 − 1,86 × 10-2 × 3 + 3,36 × 10-1... formule (2).