公开(公告)号：US09893576B2

公开(公告)日：2018-02-13

申请号：US15294415

申请日：2016-10-14

申请人： ASMO CO., LTD.

发明人： Koji Mikami ,  Yoji Yamada

IPC分类号： H02K21/14 ,  H02K1/27 ,  H02K21/12 ,  H02K3/28 ,  H02K1/14 ,  H02K1/24 ,  H02K16/02 ,  H02K3/18 ,  H02K7/08

CPC分类号： H02K1/2706 ,  H02K1/14 ,  H02K1/24 ,  H02K1/2713 ,  H02K1/2746 ,  H02K3/18 ,  H02K3/28 ,  H02K7/083 ,  H02K16/02 ,  H02K21/12 ,  H02K21/14

摘要： A brushless motor includes a first rotor core, a second rotor core, and a field magnet member. The first rotor core includes primary projecting pieces arranged along a circumferential direction at equal intervals. The second rotor core has the same shape as the first rotor core, and includes secondary projecting pieces arranged along the circumferential direction at equal intervals. The secondary projecting pieces are positioned between the primary projecting pieces that are adjacent to one another in the circumferential direction. The field magnet member is arranged between the first rotor core and the second rotor core. The field magnet member is magnetized along an axial direction to generate primary magnetic poles in the primary projecting pieces, and generate secondary magnetic poles in the secondary projecting pieces. A rotor includes the first rotor core, the second rotor core, and the field magnet member.

公开(公告)号：US08981612B2

公开(公告)日：2015-03-17

申请号：US13662781

申请日：2012-10-29

申请人： ASMO Co., Ltd.

发明人： Seiya Yokoyama ,  Yoji Yamada

IPC分类号： H02K21/12 ,  H02K1/27

CPC分类号： H02K1/27 ,  H02K1/2706

摘要： A rotor is provided with a first rotation member having a plurality of first claw poles in a circumferential direction and a second rotation member having a plurality of second claw poles in a circumferential direction. By of fitting each second claw pole in a cutout portion between first claw poles and by fitting each first claw pole in a cutout portion between second claw poles, the first rotation member and the second rotation member are assembled to each other. At least either one of the first rotation member and the second rotation member is formed of a magnet. Based on a magnetic field generated by the magnet, the first claw poles and the second claw poles have alternating north poles and south poles in the circumferential direction.

摘要翻译： 转子设置有沿圆周方向具有多个第一爪极的第一旋转构件和在圆周方向上具有多个第二爪极的第二旋转构件。 通过将每个第二爪极装配在第一爪极之间的切口部分中并且通过将每个第一爪极装配在第二爪极之间的切口部分中，将第一旋转构件和第二旋转构件彼此组装。 第一旋转构件和第二旋转构件中的至少一个由磁体形成。 基于由磁体产生的磁场，第一爪极和第二爪极在圆周方向上具有交替的北极和南极。

公开(公告)号：US20130121856A1

公开(公告)日：2013-05-16

申请号：US13662834

申请日：2012-10-29

申请人： ASMO Co., Ltd.

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

IPC分类号： F04D13/06

CPC分类号： F04D13/06 ,  H02K1/2706 ,  H02K1/2713 ,  H02K1/30

摘要： 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.

摘要翻译： 转子包括第一转子铁芯，第二转子铁心，励磁磁铁和辅助磁体。 第一转子铁心包括第一铁心基体和多个第一钩形极。 第二转子铁芯包括第二铁芯基体和多个第二钩形极。 第一和第二钩状极在转子的圆周方向上交替布置。 场磁体沿轴向布置在第一和第二芯基座之间。 场磁铁使第一钩形极用作第一极，第二钩状极用作第二极。 辅助磁体包括一体形成的至少两个极间磁极部分。 每个极间磁极部分布置在第一钩状极和第二钩状极之间的空隙中，并沿圆周方向被磁化。

公开(公告)号：US20180013327A1

公开(公告)日：2018-01-11

申请号：US15713253

申请日：2017-09-22

申请人： ASMO CO., Ltd.

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

IPC分类号： H02K1/27 ,  H02K21/16

CPC分类号： H02K1/2706 ,  H02K1/2713 ,  H02K1/2766 ,  H02K21/16

摘要： 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：US09780610B2

公开(公告)日：2017-10-03

申请号：US14682962

申请日：2015-04-09

申请人： Asmo Co., Ltd.

发明人： Yoji Yamada ,  Chie Morita ,  Takahiro Tsuchiya ,  Seiya Yokoyama

IPC分类号： H02K1/27 ,  H02K1/24 ,  H02K21/16 ,  H02K19/10

CPC分类号： H02K1/243 ,  H02K1/2713 ,  H02K1/2746 ,  H02K19/103 ,  H02K21/16

摘要： 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.

公开(公告)号：US20170279319A1

公开(公告)日：2017-09-28

申请号：US15620578

申请日：2017-06-12

申请人： ASMO CO., LTD.

发明人： Yoji Yamada ,  Koji Mikami ,  Takahiro Tsuchiya ,  Hironari Suzuki ,  Seiya Yokoyama

IPC分类号： H02K1/24 ,  H02K21/16 ,  H02K1/27

CPC分类号： H02K1/243 ,  H02K1/2713 ,  H02K1/2746 ,  H02K19/103 ,  H02K21/16

摘要： A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other.

公开(公告)号：US09379582B2

公开(公告)日：2016-06-28

申请号：US13953549

申请日：2013-07-29

申请人： ASMO CO., LTD.

发明人： Koji Mikami ,  Yoji Yamada ,  Shigemasa Kato

IPC分类号： H02K21/12 ,  H02K1/27 ,  H02K29/03 ,  H02K15/03

CPC分类号： H02K1/2713 ,  H02K1/2706 ,  H02K1/2766 ,  H02K15/03 ,  H02K29/03

摘要： A motor includes a shaft, a rotor, and a stator. The rotor includes first and second rotor cores, and a field magnet. Second claw magnetic pole portions of second rotor core are arranged between first claw magnetic pole portions of the first rotor core. The field magnet causes the first claw magnetic pole portions to function as first magnetic poles, and the second claw magnetic pole portions to function as second magnetic poles. Radially inner surfaces of the teeth of a stator core face radially outer surfaces of the first and second claw magnetic poles. Either radially outer surfaces of the first and second claw magnetic pole portions or radially inner surfaces of the teeth each have a cross-sectional shape in a direction orthogonal to the axial direction that is not concentric to a circle of which center is an axis of the rotation shaft.

摘要翻译： 电动机包括轴，转子和定子。 转子包括第一和第二转子芯和场磁体。 第二转子铁心的第二爪磁极部配置在第一转子铁芯的第一爪极极部之间。 场磁铁使第一爪磁极部作为第一磁极，第二爪磁极部作为第二磁极发挥作用。 定子芯的齿的径向内表面面向第一和第二爪磁极的径向外表面。 第一爪极磁极部分和第二爪状磁极部分的径向外表面或齿的径向内表面各自在与轴向正交的方向上具有横截面形状，该轴向方向的中心不是同心圆 旋转轴。

公开(公告)号：US09276444B2

公开(公告)日：2016-03-01

申请号：US13761772

申请日：2013-02-07

申请人： ASMO CO., LTD.

发明人： Chie Morita ,  Yoji Yamada

IPC分类号： H02K1/27

CPC分类号： H02K1/2713 ,  H02K1/2706 ,  H02K1/2773

摘要： A rotor includes a first rotor core, a second rotor core, a field magnet, and an adhesive. The first rotor core includes a first core base, having a first magnet fixing surface, and a plurality of first claw-poles. The second rotor core includes a second core base having a second magnet fixing surface, and a plurality of second claw-poles. The field magnet includes a first axial end face and a second axial end face. At least one of the first magnet fixing surface and the first axial end face includes a first adhesive recess that receives an adhesive. At least one of the second magnet fixing surface and the second axial end face includes a second adhesive recess that receives the adhesive.

摘要翻译： 转子包括第一转子芯，第二转子芯，场磁体和粘合剂。 第一转子铁芯包括具有第一磁体固定表面的第一铁芯基体和多个第一爪极。 第二转子铁芯包括具有第二磁体固定表面的第二铁芯基体和多个第二爪极。 场磁体包括第一轴向端面和第二轴向端面。 第一磁体固定表面和第一轴向端面中的至少一个包括接收粘合剂的第一粘合剂凹部。 第二磁体固定表面和第二轴向端面中的至少一个包括接收粘合剂的第二粘合剂凹部。

公开(公告)号：US09273691B2

公开(公告)日：2016-03-01

申请号：US13662834

申请日：2012-10-29

申请人： ASMO Co., Ltd.

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

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

CPC分类号： F04D13/06 ,  H02K1/2706 ,  H02K1/2713 ,  H02K1/30

摘要： 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.

摘要翻译： 转子包括第一转子铁芯，第二转子铁心，励磁磁铁和辅助磁体。 第一转子铁心包括第一铁心基体和多个第一钩形极。 第二转子铁芯包括第二铁芯基体和多个第二钩形极。 第一和第二钩状极在转子的圆周方向上交替布置。 场磁体沿轴向布置在第一和第二芯基座之间。 场磁铁使第一钩形极用作第一极，第二钩状极用作第二极。 辅助磁体包括一体形成的至少两个极间磁极部分。 每个极间磁极部分布置在第一钩状极和第二钩状极之间的空隙中，并沿圆周方向被磁化。

公开(公告)号：US20150084466A1

公开(公告)日：2015-03-26

申请号：US14495492

申请日：2014-09-24

申请人： ASMO CO., LTD.

发明人： Takahiro Tsuchiya ,  Chie Morita ,  Yoji Yamada ,  Koji Mikami

IPC分类号： H02K1/24

CPC分类号： H02K1/243 ,  H02K1/2713 ,  H02K1/2733 ,  H02K21/044 ,  H02K21/16

摘要： 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.

摘要翻译： 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。