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公开(公告)号：US20140139065A1
公开(公告)日：2014-05-22
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: H02K1/27
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.
Abstract translation: 无刷电动机包括转子。 转子包括第一转子铁芯，第二转子铁芯和磁场磁铁。 第一转子铁芯包括沿圆周方向排列的多个第一磁极部。 第二转子铁芯包括在圆周方向上排列的多个第二磁极部。 场磁体沿轴向布置在第一转子芯和第二转子芯之间。 当磁场磁体沿轴向磁化时，第一磁极部分起第一磁极的作用，第二磁极部分用作第二磁极。
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公开(公告)号：US20140139079A1
公开(公告)日：2014-05-22
申请号：US14075942
申请日：2013-11-08
Applicant: ASMO CO., LTD.
Inventor： Shigemasa KATO , Yoji YAMADA , Koji MIKAMI , Seiya YOKOYAMA
CPC classification number: H02K21/16 , H02K1/2706 , H02K1/2713 , H02K1/272 , H02K29/08
Abstract: A rotor includes a first rotor core, a second rotor core, a field magnet, and a detected portion. The first rotor core includes a first core base and a plurality of first claw-shaped magnetic pole portions. The second rotor core includes a second core base and a plurality of second claw-shaped magnetic pole portions. The first and second core bases face to each other, and the first and second claw-shaped magnetic pole portions are alternately arranged in the circumferential direction. The field magnet is located between the first and second core bases in the axial direction. The field magnet has the first claw-shaped magnetic pole portion function as a first magnetic pole and has the second claw-shaped magnetic pole portion function as a second magnetic pole. A detected portion, which generates a magnetic flux, is arranged at an outer axial end surface of the first rotor core.
Abstract translation: 转子包括第一转子铁心，第二转子铁芯，磁场磁铁和检测部分。 第一转子铁心包括第一铁心基体和多个第一爪形磁极部分。 第二转子铁芯包括第二铁心基体和多个第二爪形磁极部分。 第一和第二芯基体彼此面对，并且第一和第二爪形磁极部分在圆周方向上交替布置。 场磁体位于第一和第二芯基座之间的轴向方向上。 场磁体具有第一爪形磁极部分作为第一磁极，并且第二爪形磁极部分用作第二磁极。 产生磁通的检测部分设置在第一转子铁芯的外轴向端面上。
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公开(公告)号：US20140035422A1
公开(公告)日：2014-02-06
申请号：US13953549
申请日：2013-07-29
Applicant: ASMO CO., LTD.
Inventor： Koji MIKAMI , Yoji YAMADA , Shigemasa KATO
IPC: H02K1/27
CPC classification number: H02K1/2713 , H02K1/2706 , H02K1/2766 , H02K15/03 , H02K29/03
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US20150333580A1
公开(公告)日：2015-11-19
申请号：US14812110
申请日：2015-07-29
Applicant: ASMO CO., LTD.
Inventor： Yoji YAMADA
IPC: H02K1/24
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.
Abstract translation: 转子包括沿轴向方向布置在第一转子铁心的第一铁芯基座和第二转子铁芯的第二铁芯基座之间的励磁部件。 当沿轴向磁化时，场构件使初级爪形磁极用作主磁极和次级爪形磁极，用作次级磁极。 场部件通过沿轴向方向一个地放置多个部件而形成。
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公开(公告)号：US20140252904A1
公开(公告)日：2014-09-11
申请号：US14195295
申请日：2014-03-03
Applicant: ASMO CO., LTD.
Inventor： Koji MIKAMI , Shigemasa KATO , Yoji YAMADA , Seiya YOKOYAMA
CPC classification number: H02K1/243 , H02K1/226 , H02K1/2726 , H02K5/04 , H02K2213/03
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.
Abstract translation: 电动机包括定子，转子和壳体。 转子包括第一转子铁心，第二转子铁心和场磁体。 第一转子铁芯和第二转子铁芯中的每一个包括铁芯基体和多个爪极。 场磁体位于核心基座之间。 壳体包括圆柱形轭壳体和盖子。 为了平衡来自第一转子铁芯的磁通量与来自第二转子铁芯的磁通量，转子和定子之间的距离与转子和轭壳体之间的距离不同，或者定子的齿形成磁饱和 。
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Patent Agency Ranking
公开(公告)号：US20130313938A1
公开(公告)日：2013-11-28
申请号：US13831641
申请日：2013-03-15
Applicant: ASMO CO., LTD.
Inventor： Yoji YAMADA , Seiya YOKOYAMA , Yoshiaki TAKEMOTO , Chie MORITA , Koji MIKAMI
IPC: H02K1/27
CPC classification number: H02K1/2706 , H02K1/14 , H02K1/24 , H02K1/2713 , H02K1/2746 , H02K3/18 , H02K3/28 , H02K7/083 , H02K16/02 , H02K21/12 , H02K21/14
Abstract: 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.
Abstract translation: 无刷电动机包括第一转子铁心，第二转子铁心和励磁磁铁构件。 第一转子芯包括以等间隔沿圆周方向布置的主突出片。 第二转子铁芯具有与第一转子铁芯相同的形状，并且包括沿着圆周方向等间隔布置的次级突出片。 二次突出片位于沿圆周方向彼此相邻的主突出片之间。 场磁体构件布置在第一转子芯和第二转子芯之间。 磁场部件沿着轴向磁化，在主突出片中产生初级磁极，在二次突出片中产生副磁极。 转子包括第一转子铁心，第二转子铁心和励磁磁铁构件。
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公开(公告)号：US20180006513A1
公开(公告)日：2018-01-04
申请号：US15709062
申请日：2017-09-19
Applicant: ASMO CO., LTD.
Inventor： Koji MIKAMI , Shigemasa KATO , Yoji YAMADA , Seiya YOKOYAMA
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.
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公开(公告)号：US20140225462A1
公开(公告)日：2014-08-14
申请号：US14158273
申请日：2014-01-17
Applicant: ASMO CO., LTD.
Inventor： Yoji YAMADA , Chie MORITA , Seiya YOKOYAMA , Koji MIKAMI , Takahiro TSUCHIYA
CPC classification number: H02K1/2713 , H02K1/226 , H02K1/243 , H02K1/2706 , H02K1/2733 , H02K1/274 , H02K1/2753 , H02K1/276 , H02K1/2773
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.
Abstract translation: 转子包括第一转子芯，第二转子芯，永磁体和树脂层。 第一转子铁芯包括在第一铁芯基座的周边部分上以等间隔布置的第一铁心基体和第一爪形磁极。 第二转子铁芯包括在第二铁芯基座的周边部分上以等间隔布置的第二铁心基体和第二爪形磁极。 第一转子铁心和第二转子铁心彼此结合，使得第一铁芯基体和第二铁芯基座相互相对，并且第一和第二爪形磁极沿转子的圆周方向交替布置。 永磁体至少包括主磁场。 主磁体磁铁位于第一和第二磁芯底座之间，沿轴向方向被磁化。 主磁场磁铁使第一爪状磁极作为第一磁极，使第二爪状磁极作为第二磁极。 树脂层覆盖永磁体表面的至少一部分。
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公开(公告)号：US20140049132A1
公开(公告)日：2014-02-20
申请号：US13966020
申请日：2013-08-13
Applicant: ASMO CO., LTD.
Inventor： Yoji YAMADA
IPC: H02K1/24
CPC classification number: H02K1/243 , H02K1/2706 , H02K1/2713 , H02K1/2766 , H02K21/044
Abstract: A rotor includes a first rotor core, a second rotor core, a field magnet, and a back magnet. The first rotor core includes a disk-shaped first core base and a plurality of first claw-poles. The second rotor core includes a disk-shaped second core base and a plurality of second claw-poles. The field magnet has the first claw-poles function as first magnetic poles and the second claw-poles function as second magnetic poles. The back magnet is arranged along back surfaces of the first and second claw-poles. The back magnet is magnetized such that radially outer sections have the polarities that are the same as the first and second magnetic poles. The back magnet is formed integrally, has an annular shape, and is in contact with all of the back surfaces of the first and second claw-poles.
Abstract translation: 转子包括第一转子铁心，第二转子铁芯，磁场磁铁和后磁铁。 第一转子铁芯包括盘状的第一铁心基体和多个第一爪极。 第二转子铁芯包括盘状的第二铁心基体和多个第二爪极。 场磁铁具有作为第一磁极的第一爪极功能，第二爪极用作第二磁极。 后磁铁沿第一爪极和第二爪极的后表面布置。 后磁体被磁化，使得径向外部部分具有与第一和第二磁极相同的极性。 后磁体一体形成，具有环状，与第一爪极和第二爪极的所有后表面接触。
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公开(公告)号：US20180076677A1
公开(公告)日：2018-03-15
申请号：US15822048
申请日：2017-11-24
Applicant: ASMO CO., LTD.
Inventor： Yoji YAMADA , Chie MORITA , Seiya YOKOYAMA , Koji MIKAMI , Takahiro TSUCHIYA
CPC classification number: H02K1/2713 , H02K1/226 , H02K1/243 , H02K1/2706 , H02K1/2733 , H02K1/274 , H02K1/2753 , H02K1/276 , H02K1/2773
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.
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