公开(公告)号：US20020047431A1

公开(公告)日：2002-04-25

申请号：US09843417

申请日：2001-04-26

Inventor： Tetsuharu Fukushima

IPC: H02K021/12

CPC classification number: H02K1/2733 ,  H02K29/03 ,  H02K2201/06

Abstract: An AC servo motor in which annular polar anisotropic magnets, formed by splitting an anisotropic magnet into two or more portions in an axial line direction, are used in a rotor. The magnetic poles of the split annular polar anisotropic magnets are disposed so as to be shifted by a predetermined angle nullnull which is greater than a skew angle null determined based on the number of torque ripples per rotation of the rotor determined by the number of magnetic poles and the number of slots in a stator-side iron core. The predetermined angle nullnull is the angle obtained after adding to the skew angle null a value which takes into consideration magnetic interference between the magnets. The invention provides an AC servomotor which can be controlled with high precision as a result of reducing cogging torque generated between the magnet and the stator-side iron core.

Abstract translation: 在转子中使用交流伺服电动机，其中将各向异性磁体沿轴线方向分成两部分而形成的环形极性各向异性磁体。 分开的环形极性各向异性磁体的磁极被设置为偏移预定角度θ'，该预定角度θ大于基于由转子数量确定的转子每转的扭矩波动数确定的偏斜角θ 极和定子侧铁芯中的槽数。 预定角度θ'是在考虑到磁体之间的磁干扰的值之后，将偏斜角θ加到一个值后获得的角度。 本发明提供一种AC伺服电动机，其可以通过减少在磁体和定子侧铁芯之间产生的齿槽转矩而高精度地控制。

公开(公告)号：US06362553B1

公开(公告)日：2002-03-26

申请号：US09312982

申请日：1998-12-23

Applicant: Yuji Nakahara ,  Kenichi Azuma ,  Masaru Matsumoto ,  Youichi Fujita ,  Satoru Akutsu ,  Akira Hashimoto ,  Yasunori Takai ,  Tadashi Hasegawa ,  Hiroshi Miyazaki ,  Junji Kawada

Inventor： Yuji Nakahara ,  Kenichi Azuma ,  Masaru Matsumoto ,  Youichi Fujita ,  Satoru Akutsu ,  Akira Hashimoto ,  Yasunori Takai ,  Tadashi Hasegawa ,  Hiroshi Miyazaki ,  Junji Kawada

IPC: H02K717

CPC classification number: H02K29/03 ,  H02K1/14 ,  H02K1/146 ,  H02K1/148 ,  H02K1/185 ,  H02K3/18 ,  H02K3/28 ,  H02K3/522 ,  H02K3/524 ,  H02K5/225 ,  H02K7/14 ,  H02K11/40 ,  H02K15/022 ,  H02K15/095 ,  H02K21/14 ,  H02K21/22 ,  H02K2201/06 ,  H02K2201/09 ,  H02K2201/15 ,  H02K2203/03 ,  H02K2203/06 ,  H02K2203/12 ,  H02K2211/03 ,  Y10T29/49009 ,  Y10T29/49073 ,  Y10T29/49078

Abstract: An object of the present invention is to provide a low cost, high performance, thin structure rotary motor for driving medium used in magnetic disk drive unit, optical disk drive unit or the like, in order to improve the productivity of terminating processing and the reliability of the coils. Magnetic materials which are divided to a plurality of blocks or divided corresponding to respective magnetic pole teeth are connected by means of thin portions. The respective magnetic pole teeth are wound continuously with wire without cutting the wire at the positions in which the thin portions are connected. When a stator is assembled, a plurality of blocks or magnetic pole teeth are disposed on a substrate by separating or bending the thin portions.

Abstract translation: 本发明的目的是提供一种用于驱动磁盘驱动单元，光盘驱动单元等中使用的介质的低成本，高性能，薄结构的旋转电机，以提高终止处理的生产率和可靠性 的线圈。 被分割成多个块或对应于各个磁极齿分割的磁性材料通过薄的部分连接。 各个磁极齿连续地用线缠绕，而不会在连接薄部分的位置切断电线。 当组装定子时，通过分离或弯曲薄部分将多个块或磁极齿设置在基板上。

公开(公告)号：US06225724B1

公开(公告)日：2001-05-01

申请号：US09357950

申请日：1999-07-21

Applicant: Yukari Toide ,  Akihiro Daikoku ,  Yuji Nakahara ,  Toyomi Ohshige ,  Yoshikazu Ugai

Inventor： Yukari Toide ,  Akihiro Daikoku ,  Yuji Nakahara ,  Toyomi Ohshige ,  Yoshikazu Ugai

IPC: H02K122

CPC classification number: H02K15/03 ,  H02K1/276 ,  H02K1/2766 ,  H02K2201/06

Abstract: A motor embedded with magnets having good properties and productivity. A rotor of this motor includes a rotor core with laminated rotor core plates punched out of an electromagnetic steel plate and studded with bonded magnets of a powdered permanent magnet material and a resin in groups of slits located in the rotor core for each pole of the rotor.

Abstract translation: 嵌入磁铁的电机具有良好的性能和生产率。 该电动机的转子包括：转子铁芯，其具有从电磁钢板冲压出的层叠的转子铁心板，并且在转子的每个极上分别设有粉末状永久磁铁材料的粘结磁体和位于转子铁心中的一组狭缝 。

公开(公告)号：US6121706A

公开(公告)日：2000-09-19

申请号：US356452

申请日：1999-07-19

Applicant: Masayuki Nashiki ,  Takanori Yokochi

Inventor： Masayuki Nashiki ,  Takanori Yokochi

IPC: H02K1/22 ,  H02K1/27 ,  H02K19/10 ,  H02K19/22 ,  H02K17/42

CPC classification number: H02K1/246 ,  H02K19/103 ,  H02K19/22 ,  H02K2201/06

Abstract: A reluctance motor is provided that reduces leaking magnetic flux. To generate magnetic flux between adjacent magnetic poles in a rotor 2, permanent magnets 4 are disposed in approximate centers of split magnetic paths near a borderline area between two magnetic poles in an internal portion of the rotor. Further, each of slots 8 in a stator 1 is wound with a coil of a corresponding phase such that the vector phase and amplitude expressed by the products of the number of coil turns and the amount of passing current, namely, ampere-turns, become almost identical for each of the slots. By reducing leaking magnetic flux according to this arrangement, generated torque can be increased. As the rotor mechanical strength is enhanced, the rotor can be safely driven at a higher speed. A practical motor is obtained that simultaneously achieves improved motor characteristics and reduced torque ripples.

Abstract translation: 提供了一种减小磁通量的磁阻电动机。 为了在转子2的相邻磁极之间产生磁通，在转子的内部的两个磁极之间的边界区域附近的分割磁路的大致中心处配置有永磁体4。 此外，定子1中的每个槽8用对应相的线圈缠绕，使得由线圈匝数和通过电流量（即安匝数）的乘积表示的矢量相位和振幅变为 对于每个插槽几乎相同。 通过根据这种布置减少泄漏的磁通量，可以增加产生的转矩。 随着转子机械强度的提高，转子能够以更高的速度被安全地驱动。 获得实际的电动机，其同时实现改进的电动机特性和减小的转矩波动。

公开(公告)号：US6088905A

公开(公告)日：2000-07-18

申请号：US813341

申请日：1997-03-07

Applicant: John H. Boyd, Jr. ,  Daniel M. Saban

Inventor： John H. Boyd, Jr. ,  Daniel M. Saban

IPC: H02K1/16 ,  H02K3/28 ,  H02K5/15 ,  H02K5/173 ,  H02K5/22 ,  H02K11/00 ,  H02K15/02 ,  H02K17/06 ,  H02K17/16 ,  H02K17/30

CPC classification number: H02K17/30 ,  H02K1/165 ,  H02K11/40 ,  H02K15/024 ,  H02K17/06 ,  H02K17/165 ,  H02K3/28 ,  H02K5/15 ,  H02K5/1732 ,  H02K5/225 ,  H02K2201/06 ,  Y10T29/49009 ,  Y10T29/49012 ,  Y10T29/49078 ,  Y10T29/5137 ,  Y10T29/5142 ,  Y10T83/0534

Abstract: A dynamoelectric machine constructed for speed and accuracy of manufacturing has a stator core constructed of 90.degree. symmetrical stator laminations and the windings have differing numbers of poles which overlap in slots of the stator core are wound of the core formed by the laminations in unique fashion. The rotor bars of the machine are skewed to optimize performance of the machine when in the form of a single phase induction motor. Magnet wire leads of the windings are connected directly to terminals on a plug and terminal assembly which is formed for positive location on an end frame of the machine without welding or other fastening to the end frame. The end frames of the machine and stator laminations forming the stator core are formed so as to increase the precision of the final position of the stator relative to the rotor assembly of the dynamoelectric machine. The end frames are constructed for grounding without the use of fasteners or wire. The engagement of the end frames with the stator core is employed as the basis for alignment of the machine components.

Abstract translation: 用于制造速度和精度的电动机具有由90°对称的定子叠片构成的定子芯，并且绕组具有不同数量的极，在定子芯的槽中重叠，以独特的方式缠绕形成的芯。 当以单相感应电动机的形式时，机器的转子条倾斜以优化机器的性能。 绕组的磁线引线直接连接到插头和端子组件上的端子，插头和端子组件形成为在机器的端框架上的正位置，而不需要焊接或其他紧固到端框架。 形成定子铁芯的机器和定子叠片的端框形成为提高定子相对于电动机的转子组件的最终位置的精度。 端框架构造用于接地而不使用紧固件或电线。 将端框与定子芯的接合用作机器部件对准的基础。

公开(公告)号：US6028378A

公开(公告)日：2000-02-22

申请号：US934237

申请日：1997-09-19

Applicant: Peter Lack ,  Werner Philipps

Inventor： Peter Lack ,  Werner Philipps

IPC: H02K17/16 ,  H02K1/17 ,  H02K1/26 ,  H02K5/02 ,  H02K5/04 ,  H02K5/24 ,  H02K23/04 ,  H02K21/26

CPC classification number: H02K5/24 ,  H02K1/17 ,  H02K1/26 ,  H02K2201/06 ,  H02K23/04

Abstract: An electric motor with a multi-pole rotor and a multi-pole stator. The stator is mounted in a housing, the poles of the stator extend parallel to the direction of the rotor axis, and the rotor slots run helically with respect to the rotor axis. The stator magnets are mounted to the inside wall of the housing by means of gluing. The housing features a sound-insulating wall thickness and the helix angle of the rotor slots is approximately 8.degree. to 20.degree..

Abstract translation: 具有多极转子和多极定子的电动机。 定子安装在壳体中，定子的极子平行于转子轴线的方向延伸，并且转子槽相对于转子轴线螺旋地延伸。 定子磁体通过胶合安装到壳体的内壁。 壳体具有隔音壁厚，转子槽的螺旋角约为8°至20°。

公开(公告)号：US5990595A

公开(公告)日：1999-11-23

申请号：US725860

申请日：1996-10-04

Applicant: James Robert Crowell

Inventor： James Robert Crowell

IPC: H02K17/16 ,  H02K1/22

CPC classification number: H02K17/165 ,  H02K2201/06

Abstract: Rotors and methods of assembling such rotors for electric motors are described. In one embodiment, the rotor includes a substantially cylindrical core having substantially planar first and second end surfaces and a substantially cylindrical body portion. The rotor core body portion has first, second and third body sections. The first body section has an outer diameter less than an outer diameter of the second body section, and the third body section has an outer diameter approximately about equal to the outer diameter of the first body section. The first and third body sections sometimes are referred to as end sections or core extensions. A plurality of radially arranged rotor bar slots extend through the body portion, and a plurality of rotor bars are cast in the rotor bar slots. The rotor bar slots in the end sections have a first geometric cross-sectional shape and the rotor bar slots in the second body section have a second geometric cross-sectional shape. The rotor bar slot geometry in the end sections is selected to allow outward displacement of the rotor bars in the radial direction.

Abstract translation: 描述了用于电动机组装这种转子的转子和方法。 在一个实施例中，转子包括具有基本上平面的第一和第二端表面和基本上圆柱形主体部分的基本上圆柱形的芯。 转子芯体部分具有第一，第二和第三主体部分。 第一主体部的外径小于第二主体部的外径，第三主体部的外径大致等于第一主体部的外径。 第一和第三主体部分有时被称为端部部分或核心延伸部。 多个径向布置的转子条槽延伸通过主体部分，并且多个转子条被铸造在转子条槽中。 端部中的转子条槽具有第一几何横截面形状，并且第二主体部分中的转子条槽具有第二几何横截面形状。 选择端部中的转子条槽几何形状以允许转子杆在径向方向上向外移位。

公开(公告)号：US5986377A

公开(公告)日：1999-11-16

申请号：US57794

申请日：1998-04-09

Applicant: Toyonobu Yamada ,  Tsutomu Kawamura ,  Naoki Mizutani ,  Toshikazu Sato ,  Kingo Miyaoka ,  Motoyasu Mochizuki

Inventor： Toyonobu Yamada ,  Tsutomu Kawamura ,  Naoki Mizutani ,  Toshikazu Sato ,  Kingo Miyaoka ,  Motoyasu Mochizuki

IPC: H02K1/14 ,  H02K3/18 ,  H02K3/52 ,  H02K15/02 ,  H02K15/04 ,  H02K15/06 ,  H02K1/00

CPC classification number: H02K15/066 ,  H02K1/148 ,  H02K15/022 ,  H02K15/0457 ,  H02K15/06 ,  H02K3/18 ,  H02K3/522 ,  H02K2201/06 ,  H02K2203/12

Abstract: A stator for a dynamoelectric machine includes an annular stator core composed of a developed core formed by stacking a number of steel sheets, each steel sheet including a plurality of unit cores each of which includes a unit yoke and a magnetic pole tooth and which are sequentially connected together by connecting portions integral with the respective unit yokes, and a stator coil wound on the magnetic pole teeth. Each unit yoke has a circumferential end overlapping, in a direction of stacking of the steel sheets, a circumferential end of the unit yoke adjacent to said each unit yoke.

Abstract translation: 一种用于电动机的定子包括由堆叠多个钢板形成的展开芯构成的环形定子铁芯，每个钢板包括多个单元芯，每个单元芯包括单元磁轭和磁极齿，并且依次 通过与各单元轭一体化的连接部分连接在一起，以及缠绕在磁极齿上的定子线圈。 每个单元轭具有在钢板堆叠方向上与圆柱体相邻的单元轭的圆周端重叠的圆周端。

公开(公告)号：US5942873A

公开(公告)日：1999-08-24

申请号：US61339

申请日：1998-04-17

Applicant: Kazuo Nakano

Inventor： Kazuo Nakano

IPC: H02K21/22 ,  H02K1/27 ,  H02K3/28 ,  H02K1/14

CPC classification number: H02K3/28 ,  H02K1/2786 ,  H02K2201/06

Abstract: In a synchronous machine, an armature structure has n (n being a positive integer) salient poles provided at predetermined circumferential distances around a rotary shaft and coils wound on the salient poles respectively, and a field system is constituted by (n-1) permanent magnet pieces arranged like a ring as a whole around the rotary shaft closely to radially outer ends of the salient poles of the armature structure, the respective permanent magnet pieces being magnetized radially so that north and south poles are alternately arranged respectively on inner circumferential surfaces of the permanent magnet pieces, and each of boundary lines between adjacent ones of the permanent magnet pieces is inclined at a predetermined angle relative to a direction parallel to the rotary shaft in such a manner that when the radially outer ends of the salient poles opposite to the inner circumferential surfaces of the permanent magnet pieces are circumferentially developed and projected onto a development where the inner circumferential surfaces of the permanent magnet pieces are circumferentially developed and when a certain one of the boundary lines comes between two of the salient poles adjacent to each other, the one boundary line passes at the same time two diagonally opposite apexes of projected rectangles corresponding to the radially outer ends of the two salient poles adjacent to each other.

Abstract translation: 在同步电机中，电枢结构的n（n为正整数）凸极分别设置在旋转轴周围的预定圆周距离处，并且线圈分别缠绕在凸极上，场系统由（n-1）永久 磁体片整体围绕旋转轴排列成与电枢结构的凸极的径向外端紧密相连，各个永磁体被径向地磁化，使得北极和南极分别交替排列在 永久磁铁片和相邻的永久磁铁片之间的边界线相对于与旋转轴平行的方向以预定的角度倾斜，使得当凸极的径向外端与 永久磁铁片的内圆周表面周向地展开并投影到一个平面上 其中永磁体片的内圆周表面周向展开，并且当某一条边界线彼此相邻的两个凸极之间时，一条边界线同时穿过两个对角相对的突起的顶点 对应于彼此相邻的两个凸极的径向外端的矩形。

公开(公告)号：US5936323A

公开(公告)日：1999-08-10

申请号：US871888

申请日：1997-06-09

Applicant: Suetaro Shibukawa ,  Keiji Oda ,  Kiyoshi Hirano ,  Yoshikazu Kadowaki ,  Fumio Tajima

Inventor： Suetaro Shibukawa ,  Keiji Oda ,  Kiyoshi Hirano ,  Yoshikazu Kadowaki ,  Fumio Tajima

IPC: H02K1/27 ,  H02K15/03 ,  H02K21/12

CPC classification number: H02K1/276 ,  H02K15/03 ,  H02K2201/06

Abstract: Plural magnet insertion holes are provided at a vicinity of an outer peripheral of a laminated rotor core toward a circumferential direction and extend toward an axial direction. The magnet insertion holes are divided into plural toward the axial direction and each of the plural magnet insertion holes is shifted at a predetermined angle toward a circumferential direction. The permanent magnet is arranged in the magnet insertion hole and the permanent magnet is fixed to the laminated rotor core through a clearance fill-up agent. The cogging torque is reduced and the reduction in noises is improved and a permanent magnet rotation type rotor constituted by low cost materials is prevented from damaging or destroying by the centrifugal force.

Abstract translation: 叠层转子铁芯的外周附近朝向圆周方向设置有多个磁铁插入孔，并向轴向延伸。 磁体插入孔沿轴向分成多个，并且多个磁体插入孔中的每一个朝着圆周方向以预定角度偏移。 永久磁铁布置在磁体插入孔中，并且永磁体通过间隙填充剂固定到层叠的转子芯上。 齿槽转矩减小，噪音减小，由低成本材料构成的永久磁铁旋转型转子不会受到离心力的破坏或破坏。