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：US10734852B2

公开(公告)日：2020-08-04

申请号：US15709062

申请日：2017-09-19

Applicant: ASMO CO., LTD.

Inventor： Koji Mikami ,  Shigemasa Kato ,  Yoji Yamada ,  Seiya Yokoyama

IPC: H02K1/24 ,  H02K5/04 ,  H02K21/04 ,  H02K1/27 ,  H02K1/22

Abstract: A motor includes a stator, a rotor and a case. The rotor includes a first rotor core, a second rotor core, and a field magnet. Each of the first rotor core and the second rotor core includes a core base and a plurality of claw poles. The field magnet is located between the core bases. The case includes a cylindrical yoke housing and a lid. To balance magnetic flux from the first rotor core with magnetic flux from the second rotor core, the distance between the rotor and the stator is varied from the distance between the rotor and the yoke housing or the teeth of the stator are shaped to enable magnetic saturation.

公开(公告)号：US10326324B2

公开(公告)日：2019-06-18

申请号：US15822048

申请日：2017-11-24

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Koji Mikami

IPC: H02K1/27 ,  H02K1/24 ,  H02K1/22

Abstract: A rotor includes a first rotor core, a second rotor core, a permanent magnet and a resin layer. The first rotor core includes a first core base and first claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the first core base. The second rotor core includes a second core base and second claw-shaped magnetic poles arranged at equal intervals on a peripheral portion of the second core base. The first rotor core and the second rotor core are combined with each other so that the first and second core bases are opposed to each other and the first and second claw-shaped magnetic poles are alternately arranged in the circumferential direction of the rotor. The permanent magnet includes at least a main field magnet. The main field magnet is located between the first and second core bases in the axial direction, and is magnetized in the axial direction. The main field magnet causes the first claw-shaped magnetic poles to function as first magnetic poles, and causes the second claw-shaped magnetic poles to function as second magnetic poles. The resin layer covers at least a portion of a surface of the permanent magnet.

公开(公告)号：US09774222B2

公开(公告)日：2017-09-26

申请号：US14812110

申请日：2015-07-29

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada

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

CPC classification number: H02K1/243 ,  H02K1/27 ,  H02K1/2713

Abstract: A rotor includes a field member arranged between a first core base of a first rotor core and a second core base of a second rotor core in the axial direction. When magnetized in the axial direction, the field member causes primary claw-shaped magnetic poles to function as primary magnetic poles and secondary claw-shaped magnetic poles to function as secondary magnetic poles. The field member is formed by placing a plurality of members one over another in the axial direction.

公开(公告)号：US09653952B2

公开(公告)日：2017-05-16

申请号：US14287536

申请日：2014-05-27

Applicant: Asmo Co., LTD.

Inventor： Yoji Yamada ,  Seiya Yokoyama ,  Shigemasa Kato ,  Yoshiaki Takemoto ,  Yoko Tateishi

IPC: H02K1/27 ,  H02K1/24 ,  H02K29/03 ,  H02K21/16

CPC classification number: H02K1/24 ,  H02K1/2746 ,  H02K21/16 ,  H02K29/03 ,  H02K2213/03

Abstract: A motor includes a rotor and a stator. The rotor includes a plurality of magnets, which function as first magnetic poles, and salient poles, which function as second magnetic poles. A ratio X1:X2 of a quantity X1 of magnetic pole portions of the rotor, which is the sum of the quantity of the magnets and the quantity of the salient poles, and the quantity X2 of slots is 2n:3n (n being a natural number). The sum of a magnetic pole occupying angle θ1 of the magnet and a magnetic pole occupying angle θ2 of the salient pole is 360°. The magnetic pole occupying angle θ1 is set in a range of 180°

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。

公开(公告)号：US20150333579A1

公开(公告)日：2015-11-19

申请号：US14810007

申请日：2015-07-27

Applicant: ASMO Co., Ltd.

Inventor： Yoji Yamada ,  Chie Morita

IPC: H02K1/24

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.

Abstract translation: 具有轴向的转子包括沿轴向布置的至少一对转子芯和位于转子芯之间并沿轴向被磁化的磁场磁体。 每个转子芯包括在轴向方向上延伸的多个爪极。 每个转子铁心包括适当地引起磁通量流向爪极的磁通量控制部分。

公开(公告)号：US20150295457A1

公开(公告)日：2015-10-15

申请号：US14682962

申请日：2015-04-09

Applicant: Asmo Co., Ltd.

Inventor： Yoji Yamada ,  Chie Morita ,  Takahiro Tsuchiya ,  Seiya Yokoyama

IPC: H02K1/24 ,  H02K1/27

CPC classification number: H02K1/243 ,  H02K1/2713 ,  H02K1/2746 ,  H02K19/103 ,  H02K21/16

Abstract: A rotor includes first and second rotor cores, a field magnet, and an annular magnet. The first and second rotor cores each include a core base and core magnetic poles. The core magnetic poles are provided on an outer peripheral portion of the core base at equal intervals. The core bases are faced with each other. The core magnetic poles are alternately arranged in a peripheral direction. The annular magnet is a resin molding product including a magnetic pole magnet portion and an inter-pole magnet portion. The annular magnet has a non-contact portion not in contact with the first and second rotor cores. A gate mark portion in injection molding of the annular magnet is arranged in the non-contact portion.

Abstract translation: 转子包括第一和第二转子芯，场磁体和环形磁体。 第一和第二转子芯每个包括芯基部和芯磁极。 核心磁极以相等的间隔设置在铁芯基座的外周部上。 核心基地相互面对。 核心磁极沿圆周方向交替布置。 环形磁体是包括磁极磁体部分和极间磁体部分的树脂模制产品。 环形磁体具有不与第一和第二转子芯接触的非接触部分。 在非接触部分中布置有环形磁体的注射成型中的门标记部分。

公开(公告)号：US20150222152A1

公开(公告)日：2015-08-06

申请号：US14603879

申请日：2015-01-23

Applicant: ASMO CO., LTD.

Inventor： Yoji Yamada ,  Takahiro Tsuchiya ,  Chie Morita ,  Koji Mikami ,  Seiya Yokoyama ,  Masaru Irie

IPC: H02K1/24 ,  H02K15/02 ,  H02K11/00 ,  H02K1/27 ,  H02K5/02

CPC classification number: H02K5/02 ,  H02K1/27 ,  H02K1/2713 ,  H02K1/276 ,  H02K5/04 ,  H02K11/01 ,  H02K29/08 ,  Y10T29/49012

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.

Abstract translation: 电动机包括定子，转子和壳体。 定子包括定子铁芯和绕组。 转子设在定子内部。 转子包括第一和第二转子芯和场磁体。 第一和第二转子芯每个包括芯基部和爪形磁极。 芯基部彼此相对，并且第一和第二转子芯的爪形磁极在圆周方向上交替设置。 场磁体沿轴向设置在芯基座之间。 场磁体在轴向上被磁化，从而使第一转子铁心和第二转子铁心的爪形磁极分别作为第一磁极和第二磁极起作用。 壳体的轴向端部的至少一部分由非磁性体构成。