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。

公开(公告)号：US20130106229A1

公开(公告)日：2013-05-02

申请号：US13658965

申请日：2012-10-24

Applicant: ASMO Co., Ltd.

Inventor： Kenta Goto ,  Hideaki Nishiura ,  Shigemasa Kato ,  Yoshiyuki Takabe ,  Masashi Matsuda ,  Toshihiro Uchida

IPC: H02K1/27

CPC classification number: H02K1/2746 ,  H02K29/03 ,  H02K2201/06

Abstract: A rotor includes magnetic pole portions and first and second ferric core portions. The first and second ferric core portions are each located between magnetic pole portions in the circumferential direction of a rotor. A first gap is formed between the first or second ferric core portion and a magnetic pole portion at a first circumferential side. A second gap is formed between the first or second ferric core portion and the magnetic pole portion at a second circumferential side. The first gap has a smaller width than the second gap at the first ferric core portion. The first ferric core portion is inclined toward the first circumferential side. The first gap is larger than the second gap at the second ferric core portion. The second ferric core portion is inclined toward the second circumferential side.

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：US09923420B2

公开(公告)日：2018-03-20

申请号：US15044882

申请日：2016-02-16

Applicant: ASMO CO., LTD.

Inventor： Yoshiaki Takemoto ,  Shigemasa Kato ,  Masashi Matsuda

IPC: H02K1/14 ,  H02K1/22 ,  H02K3/28 ,  F04D17/16 ,  F04D29/28 ,  F04D29/42 ,  F04D25/06 ,  H02K37/12 ,  H02K1/27 ,  H02K16/00

CPC classification number: H02K1/145 ,  F04D17/16 ,  F04D25/0606 ,  F04D29/281 ,  F04D29/4226 ,  H02K1/2713 ,  H02K16/00 ,  H02K37/12

Abstract: A motor includes a stator and a rotor. The stator includes an inner circumference stator section and an outer circumference stator section. The inner circumference stator section and the outer circumference stator section each include two stator cores and a coil. The two stator cores each include claw poles and are coupled to each other. The coil is arranged between the two stator cores. The rotor includes an inner circumference magnet and an outer circumference magnet. The inner circumference magnet, which is arranged at an inner circumferential side of the inner circumference stator section, opposes the claw poles in the radial direction. The outer circumference magnet, which is arranged at an outer circumferential side of the outer circumference stator section, opposes the claw poles in the radial direction. The inner circumference stator section and the inner circumference magnet form an inner circumference motor unit. The outer circumference stator section and the outer circumference magnet form an outer circumference motor unit.

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：US08981611B2

公开(公告)日：2015-03-17

申请号：US13658965

申请日：2012-10-24

Applicant: ASMO Co., Ltd.

Inventor： Kenta Goto ,  Hideaki Nishiura ,  Shigemasa Kato ,  Yoshiyuki Takabe ,  Masashi Matsuda ,  Toshihiro Uchida

IPC: H02K1/27 ,  H02K21/12 ,  H02K29/03

CPC classification number: H02K1/2746 ,  H02K29/03 ,  H02K2201/06

Abstract: A rotor includes magnetic pole portions and first and second ferric core portions. The first and second ferric core portions are each located between magnetic pole portions in the circumferential direction of a rotor. A first gap is formed between the first or second ferric core portion and a magnetic pole portion at a first circumferential side. A second gap is formed between the first or second ferric core portion and the magnetic pole portion at a second circumferential side. The first gap has a smaller width than the second gap at the first ferric core portion. The first ferric core portion is inclined toward the first circumferential side. The first gap is larger than the second gap at the second ferric core portion. The second ferric core portion is inclined toward the second circumferential side.

Abstract translation: 转子包括磁极部分和第一和第二铁芯部分。 第一和第二铁芯部分分别位于转子周向的磁极部分之间。 在第一或第二铁芯部分和第一圆周侧的磁极部分之间形成第一间隙。 在第二圆周侧的第一或第二铁芯部和磁极部之间形成第二间隙。 第一间隙具有比第一铁芯部分的第二间隙小的宽度。 第一铁芯部朝向第一周向侧倾斜。 第一间隙大于第二铁心部分处的第二间隙。 第二铁芯部朝向第二周向侧倾斜。