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公开(公告)号：US20180013327A1
公开(公告)日：2018-01-11
申请号：US15713253
申请日：2017-09-22
Applicant: ASMO CO., Ltd.
Inventor： Yoji Yamada , Koji Mikami , Akihiro Utsumi , Akihisa Hattori , Chie Morita , Seiya Yokoyama
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.
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公开(公告)号：US09780610B2
公开(公告)日：2017-10-03
申请号：US14682962
申请日：2015-04-09
Applicant: Asmo Co., Ltd.
Inventor： Yoji Yamada , Chie Morita , Takahiro Tsuchiya , Seiya Yokoyama
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.
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公开(公告)号：US20170279319A1
公开(公告)日：2017-09-28
申请号：US15620578
申请日：2017-06-12
Applicant: ASMO CO., LTD.
Inventor： Yoji Yamada , Koji Mikami , Takahiro Tsuchiya , Hironari Suzuki , Seiya Yokoyama
CPC classification number: H02K1/243 , H02K1/2713 , H02K1/2746 , H02K19/103 , H02K21/16
Abstract: 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.
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公开(公告)号：US09273691B2
公开(公告)日：2016-03-01
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
CPC classification number: F04D13/06 , H02K1/2706 , H02K1/2713 , 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.
Abstract translation: 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。
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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
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。
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Patent Agency Ranking
公开(公告)号：US20140265703A1
公开(公告)日：2014-09-18
申请号：US14288099
申请日：2014-05-27
Applicant: Asmo Co., Ltd.
Inventor： Yoji Yamada , Seiya Yokoyama , Keisuke Koide , Yoshiaki Takemoto , Shigemasa Kato , Toshihiro Uchida
IPC: H02K1/24
CPC classification number: H02K1/24 , H02K1/274 , H02K1/2746 , H02K1/278 , H02K2213/03
Abstract: A motor including a stator and a rotor. The stator includes teeth and windings. Each tooth has a distal portion defined by a radially inward side of the stator. The rotor, which is arranged inward in the radial direction from the stator, includes a rotor core, magnets, and salient poles. Each salient pole is separated by a void from the magnet that is adjacent in the circumferential direction. The distal portion of each tooth is longer than a radially outward side of each magnet.
Abstract translation: 一种包括定子和转子的电动机。 定子包括齿和绕组。 每个齿具有由定子的径向向内侧限定的远侧部分。 从定子向径向配置的转子包括转子铁心，磁铁和凸极。 每个凸极由与圆周方向相邻的磁体的空隙分开。 每个齿的远端部分比每个磁体的径向外侧长。
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公开(公告)号：US20130113329A1
公开(公告)日：2013-05-09
申请号：US13662781
申请日：2012-10-29
Applicant: ASMO Co., Ltd.
Inventor： Seiya Yokoyama , Yoji Yamada
IPC: H02K1/27
CPC classification number: H02K1/27 , H02K1/2706
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US10862380B2
公开(公告)日：2020-12-08
申请号：US15857373
申请日：2017-12-28
Applicant: ASMO CO., LTD.
Inventor： Yoshiaki Takemoto , Yusuke Morimoto , Masashi Matsuda , Seiya Yokoyama
IPC: H02K1/18 , H02K16/00 , H02K1/14 , H02K21/14 , H02K1/27 , H02K3/52 , H02K15/02 , H02K1/24 , H02K21/04
Abstract: A rotor with four axially stacked rotor cores, and a plurality of field magnets interposed between them. Each rotor core includes a rotor-side claw-shaped magnetic pole. Each rotor-side claw-shaped magnetic poles are respectively extending from and formed on each rotor core at equal angle intervals. Tip end surfaces of the first and third rotor-side claw-shaped magnetic pole abut against or are closely opposed to each other axially. Tip end surfaces of the second and fourth rotor-side claw-shaped magnetic poles abut against or are closely opposed to each other in the axial direction. The plurality of field magnets are magnetized in the axial direction such that the field magnets causes the first and third rotor-side claw-shaped magnetic poles to function as first magnetic poles, and cause the second and fourth rotor-side claw-shaped magnetic poles to function as second magnetic poles.
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公开(公告)号：US20190006898A1
公开(公告)日：2019-01-03
申请号：US15744692
申请日：2016-07-19
Applicant: ASMO CO., LTD.
Inventor： Seiya Yokoyama , Yoji Yamada , Koji Mikami , Akihisa Hattori
Abstract: A motor includes a stator having windings and a rotor. The rotor includes a rotor core and a first magnet magnetic pole, a second magnet magnetic pole, and a protrusion provided next to each other in the circumferential direction. The second magnet magnetic pole has an opposite polarity to the first magnet magnetic pole. The protrusion projects in the radial direction in the rotor core. The windings include a first winding and a second winding. The first winding and the second winding are excited at the same timing, and are serially connected. The protrusion faces the second winding at the rotor rotation position at which the first magnet magnetic pole or the second magnet magnetic pole faces the first winding.
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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
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.
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