公开(公告)号：US08890386B2

公开(公告)日：2014-11-18

申请号：US13662722

申请日：2012-10-29

Applicant: ASMO Co., Ltd.

Inventor： Chie Morita ,  Yoji Yamada ,  Seiya Yokoyama

IPC: H02K21/12 ,  H02K1/27

CPC classification number: H02K1/27 ,  H02K1/2713 ,  H02K1/2733 ,  H02K1/278

Abstract: A rotor includes first and second rotor cores and a field magnet placed between the first and second rotor cores. Each of the rotor cores has a main body portion and a plurality of extensions, which extend radially outward from the main body portion at equal intervals in the circumferential direction. The field magnet causes the individual extensions to function as magnetic poles. A magnetic pole constituting section including at least part of each of the extensions and the first main body portion of each rotor core are made of different materials, made of the same material but formed as separate elements, or includes regions having different properties.

Abstract translation: 转子包括第一和第二转子芯和放置在第一和第二转子芯之间的场磁体。 每个转子铁心具有主体部分和多个延伸部，其沿圆周方向以相等的间隔从主体部分径向向外延伸。 场磁铁使各个延伸部分作为磁极。 包括每个转子芯的每个延伸部和第一主体部分的至少一部分的磁极构成部分由不同的材料制成，由相同的材料制成，但是形成为单独的元件，或者包括具有不同特性的区域。

公开(公告)号：US10270306B2

公开(公告)日：2019-04-23

申请号：US14603879

申请日：2015-01-23

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Takahiro Tsuchiya ,  Chie Morita

IPC: H02K5/02 ,  H02K11/02 ,  H02K5/04 ,  H02K1/27 ,  H02K29/08 ,  H02K11/01

Abstract: A motor includes a stator, a rotor, and a case. The stator includes a stator core and windings. The rotor is provided inside the stator. The rotor includes first and second rotor cores and a field magnet. The first and second rotor cores each includes a core base and claw-shaped magnetic poles. The core bases are opposed to each other and the claw-shaped magnetic poles of the first and second rotor cores are alternately disposed in a circumferential direction. The field magnet is disposed between the core bases in the axial direction. The field magnet is magnetized in the axial direction so as to cause the claw-shaped magnetic poles of the first rotor core and the second rotor core to function respectively as first magnetic poles and second magnetic poles. At least part of an end part of the case in the axial direction is made of a non-magnetic body.

公开(公告)号：US09787148B2

公开(公告)日：2017-10-10

申请号：US14975394

申请日：2015-12-18

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Koji Mikami ,  Akihiro Utsumi ,  Akihisa Hattori ,  Chie Morita

IPC: H02K1/27 ,  H02K21/16

CPC classification number: H02K1/2706 ,  H02K1/2713 ,  H02K1/2766 ,  H02K21/16

Abstract: A rotor of a motor includes first and second rotor cores, a field magnet, and a commutator magnet. The first and second rotor cores each include a core base and a plurality of claw poles. The claw poles of the first rotor core and the claw poles of the second rotor core are alternately arranged in a circumferential direction. The field magnet is located between the core bases. The field magnet is magnetized in an axial direction so that the claw poles of the first rotor core and the claw poles of the second rotor core function as different magnetic poles in the circumferential direction. The commutator magnet is located on an outer circumference of the field magnet around the claw poles. The commutator magnet is magnetized so that surfaces having the same polarity face each other between the claw poles and the commutator magnet.

公开(公告)号：US09673669B2

公开(公告)日：2017-06-06

申请号：US14075958

申请日：2013-11-08

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Koji Mikami ,  Chie Morita ,  Takahiro Tsuchiya ,  Seiya Yokoyama ,  Takayoshi Suzuki

IPC: H02K1/22 ,  H02K1/27 ,  H02K15/03 ,  H02K21/16 ,  H02K1/28 ,  H02K1/24 ,  H02K15/02

CPC classification number: H02K1/226 ,  H02K1/243 ,  H02K1/27 ,  H02K1/2713 ,  H02K1/28 ,  H02K15/022 ,  H02K15/03 ,  H02K21/16 ,  H02K2213/03

Abstract: A brushless motor includes a rotor. The rotor includes a first rotor core, a second rotor core and a field magnet. The first rotor core includes a plurality of first magnetic pole portions arranged in a circumferential direction. The second rotor core includes a plurality of second magnetic pole portions arranged in the circumferential direction. The field magnet is arranged between the first rotor core and the second rotor core in an axial direction. When the field magnet is magnetized in the axial direction, the first magnetic pole portions function as first magnetic poles and the second magnetic pole portions function as second magnetic poles.

公开(公告)号：US09490670B2

公开(公告)日：2016-11-08

申请号：US14495492

申请日：2014-09-24

Applicant: ASMO CO., LTD.

Inventor： Takahiro Tsuchiya ,  Chie Morita ,  Yoji Yamada ,  Koji Mikami

IPC: H02K1/24 ,  H02K21/16 ,  H02K21/04 ,  H02K1/27

CPC classification number: H02K1/243 ,  H02K1/2713 ,  H02K1/2733 ,  H02K21/044 ,  H02K21/16

Abstract: A rotor includes first and second rotor cores, a disk magnet, and a rectifying magnet. The first and second rotor cores each include a core base and claw-poles. The disk magnet is magnetized in the axial direction so that the claw-poles of the first rotor core function as first poles and the claw-poles of the second rotor core function as second poles. The rectifying magnet includes at least an inter-pole magnet portion or a back-surface magnet portion. The inter-pole magnet portion is located in a gap formed in the circumferential direction between the claw-poles of the first rotor core and the claw-poles of the second rotor core. The back surface magnet portion is located in a gap formed at back surfaces of the claw-poles. The rectifying magnet and the disk magnet are formed from different materials. The rectifying magnet is integrated with the disk magnet in a post-process.

Abstract translation: 转子包括第一和第二转子芯，磁盘磁体和整流磁体。 第一和第二转子芯每个包括芯基部和爪极。 磁盘磁体沿轴向磁化，使得第一转子芯的爪极用作第一极，第二转子芯的爪极用作第二极。 整流磁铁至少包括极间磁铁部分或背面磁铁部分。 极间磁铁部分位于第一转子铁心的爪极与第二转子铁心的爪极之间沿圆周方向形成的间隙。 背面磁铁部位于形成在爪极的背面的间隙。 整流磁铁和磁盘磁体由不同的材料形成。 在后期处理中，整流磁体与磁盘磁体一体化。

公开(公告)号：US09239058B2

公开(公告)日：2016-01-19

申请号：US13662834

申请日：2012-10-29

Applicant: ASMO Co., Ltd.

Inventor： Yoji Yamada ,  Chie Morita ,  Yoko Tateishi ,  Yuuki Fujii ,  Seiya Yokoyama

IPC: H02K1/27 ,  F04D13/06 ,  H02K1/30

Abstract: A rotor includes a first rotor core, a second rotor core, a field magnet, and an auxiliary magnet. The first rotor core includes a first core base and a plurality of first hook-shaped poles. The second rotor core includes a second core base and a plurality of second hook-shaped poles. The first and second hook-shaped poles are alternately arranged in a circumferential direction of the rotor. The field magnet is arranged between the first and second core bases in an axial direction. The field magnet cause the first hook-shaped poles to function as first poles and the second hook-shaped poles to function as second poles. The auxiliary magnet includes at least two interpolar magnet portions, which are integrally formed. Each interpolar magnet portion is arranged in a void between the first hook-shaped pole and the second hook-shaped pole and magnetized in the circumferential direction.

公开(公告)号：US20150115760A1

公开(公告)日：2015-04-30

申请号：US14524623

申请日：2014-10-27

Applicant: ASMO CO., LTD.

Inventor： Takahiro Tsuchiya ,  Chie Morita ,  Yoji Yamada ,  Shigemasa Kato ,  Koji Mikami

IPC: H02K1/27

CPC classification number: H02K1/2733 ,  H02K1/2713 ,  H02K2213/03

Abstract: A rotor includes a first rotor core, a second rotor core, a first magnet, a second magnet, and an annular magnet. The first magnet is arranged between first extensions of the first rotor core. The annular magnet, which is arranged between second extensions of the second rotor core, is held between the first core base and the second core base. The first magnet and the second magnet are formed integrally.

Abstract translation: 转子包括第一转子铁芯，第二转子铁芯，第一磁体，第二磁体和环形磁体。 第一磁体布置在第一转子芯的第一延伸部之间。 布置在第二转子芯的第二延伸部之间的环形磁体保持在第一芯基体和第二芯基体之间。 第一磁体和第二磁体一体形成。

公开(公告)号：US08933610B2

公开(公告)日：2015-01-13

申请号：US13662762

申请日：2012-10-29

Applicant: ASMO Co., Ltd.

Inventor： Yoji Yamada ,  Chie Morita ,  Seiya Yokoyama

IPC: H02K1/22 ,  H02K1/27 ,  H02K1/30 ,  H02K16/02 ,  H02K1/24 ,  H02K21/04

CPC classification number: H02K1/27 ,  H02K1/243 ,  H02K1/2706 ,  H02K1/2713 ,  H02K1/2766 ,  H02K1/30 ,  H02K16/02 ,  H02K21/044

Abstract: A rotor includes at least one of a group of one or more auxiliary magnets that are located between first and second claw poles in a circumferential direction and magnetized to be magnetic poles of the same polarity as the first and second claw poles and another group of one or more auxiliary magnets that are located on a rear side of the first and second claw poles and magnetized to have radially outer portions of the same polarity as the first and second magnetic poles. The auxiliary magnets are arranged to protrude beyond at least one of axial end surfaces of the first and second core bases.

Abstract translation: 一个转子包括一组一个或多个辅助磁体中的至少一个，它们沿圆周方向位于第一爪极和第二爪极之间，并且被磁化为与第一和第二爪极相同极性的磁极，另一组 或更多的辅助磁体，其位于第一爪极和第二爪极的后侧，并被磁化以具有与第一和第二磁极具有相同极性的径向外部。 辅助磁铁配置成突出超过第一和第二磁芯基座的至少一个轴向端面。

公开(公告)号：US09490671B2

公开(公告)日：2016-11-08

申请号：US14810007

申请日：2015-07-27

Applicant: ASMO Co., Ltd.

Inventor： Yoji Yamada ,  Chie Morita

IPC: H02K21/12 ,  H02K1/24 ,  H02K1/27 ,  H02K16/02

CPC classification number: H02K1/243 ,  H02K1/2706 ,  H02K1/2713 ,  H02K1/276 ,  H02K1/2773 ,  H02K16/02

Abstract: A rotor having an axial direction includes at least a pair of rotor cores arranged in the axial direction, and a field magnet located between the rotor cores and magnetized in the axial direction. Each of the rotor cores includes a plurality of claw poles extending in the axial direction. Each of the rotor cores includes a magnetic flux controlling section, which appropriately causes a magnetic flux to flow to the claw poles.

公开(公告)号：US20160197527A1

公开(公告)日：2016-07-07

申请号：US14975394

申请日：2015-12-18

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Koji Mikami ,  Akihiro Utsumi ,  Akihisa Hattori ,  Chie Morita ,  Seiya Yokoyama

IPC: H02K1/24 ,  H02K1/30 ,  H02K1/27

CPC classification number: H02K1/2706 ,  H02K1/2713 ,  H02K1/2766 ,  H02K21/16

Abstract: A rotor of a motor includes first and second rotor cores, a field magnet, and a commutator magnet. The first and second rotor cores each include a core base and a plurality of claw poles. The claw poles of the first rotor core and the claw poles of the second rotor core are alternately arranged in a circumferential direction. The field magnet is located between the core bases. The field magnet is magnetized in an axial direction so that the claw poles of the first rotor core and the claw poles of the second rotor core function as different magnetic poles in the circumferential direction. The commutator magnet is located on an outer circumference of the field magnet around the claw poles. The commutator magnet is magnetized so that surfaces having the same polarity face each other between the claw poles and the commutator magnet.

Abstract translation: 电动机的转子包括第一和第二转子芯，场磁体和换向器磁体。 第一和第二转子芯分别包括芯基部和多个爪极。 第一转子铁心的爪极和第二转子铁芯的爪极在圆周方向交替地配置。 场磁体位于核心基座之间。 场磁体沿轴向磁化，使得第一转子铁心的爪极和第二转子铁芯的爪极在周向上起到不同的磁极的作用。 换向器磁体位于磁极周围的爪极周围。 换向器磁体被磁化，使得具有相同极性的表面在爪极和换向器磁体之间彼此面对。