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。

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

IPC: H02K1/24 ,  H02K1/27

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。

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。

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

IPC: H02K1/27 ,  H02K1/22 ,  H02K1/24

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.