公开(公告)号：US20150048706A1

公开(公告)日：2015-02-19

申请号：US14459780

申请日：2014-08-14

Applicant: FANUC CORPORATION

Inventor： Youichi Akasako

IPC: H02K1/27 ,  H02K1/28 ,  H02K21/14

CPC classification number: H02K1/2706 ,  H02K1/278 ,  H02K1/28 ,  H02K21/14 ,  H02K29/03 ,  H02K2201/06

Abstract: A synchronous electric motor having a structure for reducing cogging torque generated by the positioning error of a permanent magnet. Protrusions are alternately arranged in regions A and B in the circumferential direction of an iron core. Therefore, with respect to neighboring magnets positioned on both sides of the first protrusion, in region B, where the protrusion does not exit, ends of the neighboring magnets are attracted to each other by magnetic force. On the other hand, with respect to the neighboring magnets positioned on both sides of the second protrusion, in region A, where the protrusion does not exit, ends of the neighboring magnets are attracted to each other by magnetic force resulting in being inclined in opposing directions, and thus the generated cogging torque is significantly reduced.

Abstract translation: 一种具有用于减少由永磁体的定位误差产生的齿槽转矩的结构的同步电动机。 在铁芯的圆周方向上的区域A和B中交替排列突起。 因此，对于位于第一突起的两侧的相邻磁体，在区域B中，突起不会离开，相邻磁体的端部被磁力吸引。 另一方面，相对于位于第二突起的两侧的相邻磁体，在区域A中，突起不会出射，相邻磁体的端部被磁力相互吸引，导致相对的倾斜 方向，从而大大减少产生的齿槽转矩。

公开(公告)号：US20150035388A1

公开(公告)日：2015-02-05

申请号：US14378007

申请日：2013-02-12

Applicant: Hitachi Metals, Ltd.

Inventor： Masahiro Mita ,  Masahiro Masuzawa ,  Makoto Kawakami

IPC: H02K41/03

CPC classification number: H02K41/033 ,  H02K1/17 ,  H02K41/031 ,  H02K2201/06 ,  H02K2213/12

Abstract: An object is to provide a linear motor in which even when the moving range of a movable element is long, the quantity of magnets to be employed is not increased.A linear motor comprising; a movable element is in a plurality of magnets and armature cores linked alternately along a moving direction are arranged in the inside of a coil and then adjacent magnets with an armature core in between are magnetized in opposite directions; the stator includes two opposite plate-shaped parts elongated in the moving direction of the movable element and linked magnetically; in each of opposite faces of the two plate-shaped parts, tooth parts composed of magnetic material having a substantially rectangular parallelepiped shape similar to a bar shape are arranged at given intervals; and the movable element moves along an arrangement direction of the tooth parts between the two opposite plate-shaped parts.

Abstract translation: 目的在于提供一种线性电动机，其中即使当可移动元件的移动范围较长时，所使用的磁体的量也不会增加。 一种线性电动机，包括： 可动元件是多个磁体，并且沿着移动方向交替地连接的电枢芯线布置在线圈的内部，然后在其间具有电枢铁芯的相邻磁体在相反的方向上被磁化; 定子包括在可移动元件的移动方向上延伸并且被磁性连接的两个相对的板状部分; 在两个板状部件的每个相对面中，以一定间隔布置由具有与棒状相似的大致长方体形状的磁性材料构成的齿部， 并且可动元件沿着两个相对的板状部件之间的齿部的排列方向移动。

公开(公告)号：US08896176B2

公开(公告)日：2014-11-25

申请号：US13483866

申请日：2012-05-30

Applicant: Woongseon Ryu ,  Hyunseop Kim

Inventor： Woongseon Ryu ,  Hyunseop Kim

IPC: H02K1/28 ,  H02K1/27

CPC classification number: H02K1/276 ,  H02K1/28 ,  H02K2201/06 ,  H02K2213/03

Abstract: Provided is a rotor core of a motor, the rotor core, the rotor core including: a thin disk-shaped rotor core member; a shaft hole penetratively formed in a center of the rotor core member; a shaft press-fitted into the shaft hole; a plurality of magnet insertion holes penetratively formed at a position near to a periphery of the rotor core member for inserted coupling by a magnet; a plurality of teeth protrusively formed at an inner circumferential surface of the shaft hole, and a skived portion protrusively formed at a position corresponding to the plurality of teeth of the shaft, wherein the rotor core members are stacked each at a predetermined height, and the shaft is press-fitted into the shaft hole.

Abstract translation: 本发明提供一种电动机的转子铁心，转子铁心，转子铁芯，包括：薄的盘状转子铁芯件; 轴孔贯穿地形成在转子铁芯构件的中心; 轴压入轴孔; 多个磁铁插入孔，贯穿地形成在靠近转子铁心部件周围的位置，用于通过磁体插入联接; 突出地形成在所述轴孔的内周面上的多个齿，以及突出形成在与所述轴的多个齿对应的位置的定位部，其中，所述转子铁芯部件以预定的高度堆叠， 轴被压入轴孔。

公开(公告)号：US08890388B2

公开(公告)日：2014-11-18

申请号：US13665682

申请日：2012-10-31

Applicant: Mitsuba Corporation

Inventor： Kaoru Kobayashi ,  Mikio Kawamura ,  Masahiro Otawara ,  Hiroshi Takahashi

IPC: H02K3/04

CPC classification number: H02K15/095 ,  H02K2201/06

Abstract: In this winding structure for a rectangular wire, a coil is formed that is provided with: a core that forms a core main body; a teeth portion that is formed extending inwards in a radial direction from the core; and a jaw portion that is formed extending in a circumferential direction from a distal end on the inner side in the radial direction of the teeth portion, and in which a rectangular wire is wound in multiple layers around a slot that is formed surrounded by the teeth portion, the core, and the jaw portion. The ellipticity, which is a ratio of a width dimension relative to a thickness dimension of a cross-section of the rectangular wire, becomes larger as it is wound from inner layers of the coil towards outer layers thereof, and the ellipticity of the rectangular wire in each of the layers is set in accordance with the width dimension of the slot in each layer of the coil such that the generation of gaps between the slot and the rectangular wire is suppressed.

Abstract translation: 在这种矩形线圈用线圈结构中，形成有形成有芯主体的芯线的线圈， 从芯部沿径向向内延伸的齿部; 以及从所述齿部的径向的内侧的前端沿周向延伸形成的颚部，其中，矩形线围绕由所述齿形围成的狭槽围绕多个线缠绕 部分，芯部和颚部。 作为矩形线的横截面的宽度尺寸相对于厚度尺寸的比率的椭圆率随着从线圈的内层朝向其外层缠绕而变大，并且矩形线的椭圆率 根据线圈的每层中的槽的宽度尺寸来设定每个层，从而抑制槽与矩形线之间的间隙的产生。

公开(公告)号：US08796896B2

公开(公告)日：2014-08-05

申请号：US13278698

申请日：2011-10-21

Applicant: James Ching Sik Lau ,  Mao Xiong Jiang ,  Gang Li ,  Ke Lin Zhou ,  Hong Min Wei ,  Jie Chai ,  Tao Zhang

Inventor： James Ching Sik Lau ,  Mao Xiong Jiang ,  Gang Li ,  Ke Lin Zhou ,  Hong Min Wei ,  Jie Chai ,  Tao Zhang

IPC: H02K21/12

CPC classification number: H02K5/15 ,  H02K1/148 ,  H02K1/278 ,  H02K21/16 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03

Abstract: An electric motor, especially a brushless PMDC motor, has a stator and a rotor rotatably installed inside of the stator. The stator has a housing with an open end, an end cap fixed to the open end of the housing, a stator core fixed to an inner surface of the housing, and windings wound on the stator core. The rotor includes a plurality of permanent magnetic poles. The housing has a flange bent inwardly from the open end of the housing and abutting against the end cap inwardly and axially to thereby fix the end cap to the housing. The length of the flange measured along the circumferential direction of the housing is greater than half of that of the housing.

Abstract translation: 电动机，特别是无刷PMDC电动机，具有可旋转地安装在定子内部的定子和转子。 定子具有开口端的壳体，固定在壳体的开口端的端帽，固定到壳体的内表面的定子芯和缠绕在定子芯上的绕组。 转子包括多个永久磁极。 壳体具有从壳体的开口端向内弯曲的凸缘并且向内和向内抵靠端盖，从而将端盖固定到壳体。 沿着壳体的圆周方向测量的凸缘的长度大于壳体的长度的一半。

公开(公告)号：US20140210284A1

公开(公告)日：2014-07-31

申请号：US14162536

申请日：2014-01-23

Applicant: ASMO CO., LTD.

Inventor： Tatsunori BANBA ,  Hiroshi KATAI ,  Yuusuke TATEISHI ,  Yuuji YAMASHITA ,  Takumi SUZUKI ,  Kenji OBATA ,  Yoshimasa KINPARA ,  Takashi NAGAYA

IPC: H02K1/16 ,  H02K1/18 ,  H02K3/28 ,  H02K15/03 ,  H02K1/27

CPC classification number: H02K1/16 ,  H02K1/185 ,  H02K1/278 ,  H02K3/28 ,  H02K15/024 ,  H02K15/03 ,  H02K29/03 ,  H02K2201/06 ,  Y10T29/49009

Abstract: A motor includes a rotation shaft, a stator, and a rotor. The stator includes an armature winding and a stator core including a main core portion with an axial stack of core sheets and a magnetic plate on an end thereof. Each core sheet includes a tooth formation portion around which the armature winding is wound. The magnetic plate includes a stacked portion and an axially extending portion. The stacked portion stacked on the axial end of the main core portion and includes an end located toward the rotor. The axially extending portion extends toward the outer side in the axial direction from the end of the stacked portion located toward the rotor and is opposed to the rotor in a radial direction of the motor. The axially extending portion is shaped to be magnetically skewed in a circumferential direction relative to the tooth formation portion and the stacked portion.

Abstract translation: 电动机包括旋转轴，定子和转子。 定子包括电枢绕组和定子芯，该定子芯包括具有芯片的轴向堆叠的主芯部分和在其一端的磁性板。 每个芯片包括缠绕电枢绕组的齿形部分。 磁性板包括层叠部分和轴向延伸部分。 堆叠部分堆叠在主芯部分的轴向端部并且包括朝向转子的端部。 所述轴向延伸部分从位于所述转子的所述堆叠部分的端部沿轴向方向延伸，并且在所述电动机的径向方向上与所述转子相对。 轴向延伸部分成形为在相对于齿形成部分和堆叠部分的圆周方向上磁性地倾斜。

公开(公告)号：US20140203677A1

公开(公告)日：2014-07-24

申请号：US14160391

申请日：2014-01-21

Applicant: ASMO CO., LTD.

Inventor： Yoshiaki TAKEMOTO ,  Yusuke MORIMOTO ,  Masashi MATSUDA ,  Seiya YOKOYAMA

IPC: H02K1/24 ,  H02K11/00 ,  H02K16/00 ,  H02K1/14 ,  H02K1/27

CPC classification number: H02K16/00 ,  H02K1/145 ,  H02K1/243 ,  H02K1/2713 ,  H02K3/525 ,  H02K3/528 ,  H02K15/022 ,  H02K21/048 ,  H02K21/145 ,  H02K2201/06

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.

Abstract translation: 具有四个轴向堆叠的转子芯的转子和插在它们之间的多个磁场磁体。 每个转子芯包括转子侧爪形磁极。 每个转子侧爪形磁极分别以相等的角度间隔从每个转子铁心延伸并形成。 第一和第三转子侧爪形磁极的尖端表面轴向抵接或相互紧密地相对。 第二转子侧爪状磁极和第四转子侧爪形磁极的前端面在轴向上抵接或紧密相对。 多个场磁体沿轴向磁化，使得磁场磁体使第一和第三转子侧爪形磁极用作第一磁极，并且使第二和第四转子侧爪形磁极 用作第二磁极。

公开(公告)号：US20140145525A1

公开(公告)日：2014-05-29

申请号：US13687750

申请日：2012-11-28

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Kevin Allan DOOLEY

IPC: H02K1/27

CPC classification number: H02K1/2706 ,  H02K1/278 ,  H02K1/2786 ,  H02K29/03 ,  H02K2201/06

Abstract: An electric machine is formed by a stator and a rotor that is free to rotate about an axis of rotation. The stator may have teeth projecting from a body portion and that define slots for housing electrical windings. The rotor may have a rotor core and a number of magnets supported on a peripheral face of the rotor in substantially contiguous arrangement and of alternating magnetization. The rotor magnets are shaped so that pairs of adjacent magnets oppose one another along magnetic boundary lines that are skewed relative to the slots formed in the body portion of the stator. For example, the shape of the rotor magnets may be arcuate trapezoidal or parallelogramatic. In this configuration, cogging torque experienced by the rotor during operation of the electric machine may be reduced.

Abstract translation: 电机由定子和转子绕旋转轴线自由转动而形成。 定子可以具有从主体部分突出并且限定用于容纳电绕组的槽的齿。 转子可以具有转子芯和多个磁体，其以基本上邻接的布置和交变磁化方式支撑在转子的外围表面上。 转子磁体被成形为使得成对的相邻磁体沿着相对于形成在定子的主体部分中的槽倾斜的磁边界线彼此相对。 例如，转子磁体的形状可以是弓形梯形或平行四边形。 在这种构造中，可以减少在电机操作期间转子经历的齿槽转矩。

公开(公告)号：US08558424B2

公开(公告)日：2013-10-15

申请号：US12909731

申请日：2010-10-21

Applicant: Clifford Neal Auten

Inventor： Clifford Neal Auten

IPC: H02K7/09

CPC classification number: H02K7/09 ,  F03B13/10 ,  F05B2220/604 ,  F05B2220/7068 ,  F05B2250/15 ,  F16C32/0431 ,  F16C37/005 ,  F16C2380/26 ,  H02K1/278 ,  H02K5/128 ,  H02K7/1823 ,  H02K9/19 ,  H02K2201/06 ,  Y02B10/50 ,  Y02E10/22

Abstract: Apparatuses employing suspended rotors are provided. In one embodiment, an apparatus includes a housing forming an internal cavity and a rotor disposed in the internal cavity of the housing. The rotor has a first end and a second end. The apparatus also includes a first end ring coupled to the first end of the rotor and a second end ring coupled to the second end of the rotor. The first end ring and the second end ring are each magnetically repulsed from the housing to cause the rotor to be suspended relative to the housing.

Abstract translation: 提供使用悬挂转子的装置。 在一个实施例中，一种装置包括形成内腔的壳体和设置在壳体的内腔中的转子。 转子具有第一端和第二端。 该装置还包括联接到转子的第一端的第一端环和联接到转子的第二端的第二端环。 第一端环和第二端环都从壳体磁性排斥，以使转子相对于壳体悬挂。

公开(公告)号：US20130169097A1

公开(公告)日：2013-07-04

申请号：US13555943

申请日：2012-07-23

Applicant: Daniel M. Saban ,  Fang Deng ,  Seong T. Lee

Inventor： Daniel M. Saban ,  Fang Deng ,  Seong T. Lee

IPC: H02K21/02 ,  H02K21/14 ,  H02K21/22 ,  H02K21/12

CPC classification number: H02K21/14 ,  H02K1/16 ,  H02K1/278 ,  H02K7/1838 ,  H02K21/22 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03 ,  Y02E10/725

Abstract: An electric machine includes a plurality of teeth separated by a plurality of slots positioned on an armature of the electric machine. Each of the teeth may include at least one bifurcation. A plurality of magnets may be arranged on a main field of the electric machine to form an axial array group. The magnets in the axial array group may be arranged in the main field with respect to each other to create a multi-stepped arrangement having a predetermined step angle. The step angle is determined based on the positioning of the bifurcations and the slots.

Abstract translation: 电机包括由定位在电机的电枢上的多个槽分开的多个齿。 每个齿可以包括至少一个分叉。 多个磁体可以布置在电机的主场上以形成轴向阵列组。 轴向阵列组中的磁体可以相对于彼此布置在主场中，以产生具有预定阶梯角的多级布置。 基于分叉和槽的位置确定步距角。