公开(公告)号：US08138641B2

公开(公告)日：2012-03-20

申请号：US12628325

申请日：2009-12-01

申请人： Masafumi Sakamoto ,  Yoji Unoki ,  Toru Kobayashi

发明人： Masafumi Sakamoto ,  Yoji Unoki ,  Toru Kobayashi

IPC分类号： H02K37/00

CPC分类号： H02K37/18 ,  Y10T29/49012

摘要： A permanent-magnet rotary electric machine preferably includes a stator and a rotor opposed thereto via an air gap. The stator includes a stator core having 4m (m is an integer equal to or larger than 2) main poles each having inductor teeth at a tip thereof. The rotor includes two rotor units adjacent to each other in the axial direction. Each rotor unit includes a pair of rotor magnetic poles and a permanent magnet arranged therebetween. The permanent magnets in the rotor are axially magnetized in opposite directions to each other. Each rotor magnetic pole has magnetic teeth on its outer periphery at a regular pitch. The rotor magnetic poles in each rotor unit are arranged such that the magnetic teeth of one rotor magnetic plate are offset by half a pitch from those of the other rotor magnetic pole, and the magnetic teeth of adjacent rotor magnetic poles are aligned with each other in the axial direction. The tooth pitch of the inductor teeth of each stator main pole is different from that of the magnetic teeth of the rotor magnetic pole to generate a fourth harmonic component of a permeance between the stator and the rotor zero.

摘要翻译： 永磁旋转电机优选地包括定子和经由气隙与其相对的转子。 定子包括具有4m（m是等于或大于2的整数）的定子铁心，每个主极在其尖端处具有电感齿。 转子包括在轴向彼此相邻的两个转子单元。 每个转子单元包括一对转子磁极和布置在其间的永磁体。 转子中的永久磁铁在彼此相反的方向轴向磁化。 每个转子磁极在其外周上以规则的间距具有磁齿。 每个转子单元中的转子磁极被布置成使得一个转子磁性板的磁齿偏离另一个转子磁极的一半的间距，并且相邻的转子磁极的磁齿彼此对准 轴向。 每个定子主极的电感齿的齿距不同于转子磁极的磁齿的齿距，以产生定子和转子零点之间的磁导的四次谐波分量。

公开(公告)号：US07939976B2

公开(公告)日：2011-05-10

申请号：US12624500

申请日：2009-11-24

申请人： Masafumi Sakamoto ,  Yoji Unoki

发明人： Masafumi Sakamoto ,  Yoji Unoki

IPC分类号： H02K37/00

CPC分类号： H02K37/18

摘要： A hybrid type stepper motor preferably includes a two-phase eight-main-pole stator and a rotor defined by two rotor units each having a pair of rotor magnetic poles with a permanent magnet interposed therebetween. Each rotor magnetic pole has fine teeth at a regular pitch. The permanent magnets are magnetized in opposite directions to each other. The adjacent rotor magnetic poles of the rotor units are arranged with their fine teeth aligned with each other in the axial direction. Each main pole has six inductor teeth including: a pair of innermost inductor teeth arranged at the first pitch in the central portion of the main pole; a pair of intermediate teeth on the outside of the innermost inductor teeth at the second pitch therefrom; and a pair of outermost inductor teeth on the outside of the intermediate inductor teeth at the third pitch therefrom. The first, second, and third pitches are all different from the pitch of the fine teeth of the rotor magnetic pole. At least one of the first, second, and third pitches is different from the others.

摘要翻译： 混合型步进电动机优选地包括两相八极极定子和由两个转子限定的转子，每个转子单元具有一对具有永磁体的转子磁极。 每个转子磁极都以规则的间距具有细齿。 永磁体彼此相反地被磁化。 转子单元的相邻转子磁极被布置成其细齿在轴向上彼此对准。 每个主极具有六个感应齿，包括：在主极的中心部分以第一间距布置的一对最内感应齿; 在最内侧的感应器齿的外侧以一定的中间齿以第二间距为中心; 以及在中间感应器齿的外侧的第三节距处的一对最外面的电感齿。 第一，第二和第三间距与转子磁极的细齿的间距完全不同。 第一，第二和第三间距中的至少一个与其他间距不同。

公开(公告)号：US07779532B2

公开(公告)日：2010-08-24

申请号：US11677886

申请日：2007-02-22

申请人： Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Shoji Oiwa ,  Yasuo Matsuda ,  Kazuo Onishi ,  Tadashi Fukushima ,  Norimoto Tanaka

发明人： Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Shoji Oiwa ,  Yasuo Matsuda ,  Kazuo Onishi ,  Tadashi Fukushima ,  Norimoto Tanaka

IPC分类号： H02K15/00

CPC分类号： H02K15/03 ,  H02K37/18 ,  Y10T29/49009 ,  Y10T29/49012

摘要： A manufacturing method of a hybrid permanent magnet type electric rotating machine including a stator that is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.

摘要翻译： 一种混合式永磁式旋转电机的制造方法，其特征在于，具有通过将励磁线圈缠绕在各主极上而构成的定子。 转子通过将由一对转子芯和夹在转子芯之间的磁性材料构成的第一转子单元和与第一转子单元具有相同结构的第二转子单元固定到旋转轴 。 转子组装到定子上以形成组装体。 第一转子单元的磁体材料通过在轴向上穿过组装体的一半的磁化助剂在轴向上被磁化。 第二转子单元的磁体材料通过沿着轴向穿过组合体的剩余一半的磁化助焊剂在相反的极性上沿轴向磁化。

公开(公告)号：US20070200464A1

公开(公告)日：2007-08-30

申请号：US11677886

申请日：2007-02-22

申请人： Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Shoji Oiwa ,  Yasuo Matsuda ,  Kazuo Onishi ,  Tadashi Fukushima ,  Norimoto Tanaka

发明人： Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Shoji Oiwa ,  Yasuo Matsuda ,  Kazuo Onishi ,  Tadashi Fukushima ,  Norimoto Tanaka

IPC分类号： H02K37/14 ,  H01F1/03 ,  H01H47/00 ,  H01F1/00

CPC分类号： H02K15/03 ,  H02K37/18 ,  Y10T29/49009 ,  Y10T29/49012

摘要： A stator is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.

摘要翻译： 定子通过将励磁线圈缠绕在相应的主极上而构成。 转子通过将由一对转子芯和夹在转子芯之间的磁性材料构成的第一转子单元和与第一转子单元具有相同结构的第二转子单元固定到旋转轴 。 转子组装到定子上以形成组装体。 第一转子单元的磁体材料通过在轴向上穿过组装体的一半的磁化助剂在轴向上被磁化。 第二转子单元的磁体材料通过沿着轴向穿过组合体的剩余一半的磁化助焊剂在相反的极性上沿轴向磁化。

公开(公告)号：US20070120426A1

公开(公告)日：2007-05-31

申请号：US11562692

申请日：2006-11-22

申请人： Shoji Oiwa ,  Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Yasuo Matsuda ,  Kazuo Onishi ,  Yuji Enomoto ,  Naoyuki Kanamori ,  Tadashi Fukushima

发明人： Shoji Oiwa ,  Masafumi Sakamoto ,  Toru Kobayashi ,  Masahiko Azegami ,  Yasuaki Motegi ,  Takaya Kato ,  Yasuo Matsuda ,  Kazuo Onishi ,  Yuji Enomoto ,  Naoyuki Kanamori ,  Tadashi Fukushima

IPC分类号： H02K37/14 ,  H02K21/12

CPC分类号： H02K37/18 ,  H02K1/2713 ,  H02K16/02 ,  H02K2201/06 ,  H02K2213/03

摘要： A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25≦Tm/Tc≦0.45.

摘要翻译： 步进电动机包括：定子，其顶端具有小的定子齿的主磁极，连接极的外部的芯部部分和绕磁极缠绕的绕组; 以及两组转子单元，其在轴向方向上布置并且与定子面对并具有气隙。 每个转子单元由沿轴向分离的两个转子芯和由其夹在其中并在轴向上被磁化的磁体组成。 每个转子芯在其外表面周围具有小的转子齿。 每个转子单元的转子磁芯偏离小转子齿的1/2间距，并且两个转子单元布置成使相邻两个转子磁芯的小转子齿的磁极相同。 磁体厚度Tm和转子芯厚度Tc满足0.25

公开(公告)号：US07145278B2

公开(公告)日：2006-12-05

申请号：US11116542

申请日：2005-04-28

申请人： Masafumi Sakamoto

发明人： Masafumi Sakamoto

IPC分类号： H02K37/10

CPC分类号： H02K37/18 ,  H02K29/03 ,  H02P8/14

摘要： A permanent magnet type three-phase stepping motor that is simple in construction, with reduced vibration, a reduced unbalanced force in the radial direction, and high torque that can be manufactured at a low cost. The permanent magnet type three-phase stepping motor has a stator and a rotor arranged concentrically with the stator and with an air gap therebetween, said stator having three stator poles, and stator windings of three-phase each wound around each stator pole, each of said stator poles having m pieces of stator pole tooth, said rotor having two split rotor elements, a permanent magnet held between the rotor elements and magnetized so as to form N and S poles in the axial direction thereof, and a plurality (Nr) of small rotor teeth formed at a regular pitch on the outer peripheral surface of each of said rotor elements, said two split rotor elements being circumferentially shifted from each other by a ½ pitch of the small rotor teeth, wherein a pitch of the stator pole teeth is smaller than the pitch of the small rotor teeth, m is an integer and (Nr±2k)/3, Nr is 3n±1, n is an integer not less than 1, and k is an integer not less than 1 and not more than 4.

摘要翻译： 一种永磁式三相步进电机，其结构简单，振动减小，径向不平衡力减小，可以以低成本制造的高转矩。 永磁式三相步进电动机具有定子和与定子同心配置的转子，其间具有气隙，所述定子具有三个定子极，并且三相定子绕组缠绕在每个定子极上， 所述定子极具有m个定子极齿，所述转子具有两个分离转子元件，永磁体保持在转子元件之间并被磁化以在轴向方向上形成N和S极，以及多个（Nr） 在每个所述转子元件的外周表面上以规则间距形成的小转子齿，所述两个分离转子元件彼此周向相互偏移小转子齿的1/2间距，其中定子极齿的间距为 小于小转子齿的间距，m是整数，（Nr±2K）/ 3，Nr是3n±1，n是不小于1的整数，并且k是 不小于1且不大于4的整数。

公开(公告)号：US06781260B2

公开(公告)日：2004-08-24

申请号：US10272549

申请日：2002-10-16

申请人： Masafumi Sakamoto

发明人： Masafumi Sakamoto

IPC分类号： H02K3714

CPC分类号： H02K37/18

摘要： A permanent magnet type rotary machine according to the present invention has a stator having an annular magnetic member and three, four, five or six stator magnetic poles (1) extending radially from the annular magnetic member, windings (3) of three, four or five phases, each wound around each of the stator magnetic poles (1), two sets of rotors (2) adjacent each other arranged in the axial direction and faced to the stator with an air gap therebetween, and two permanent magnets (51) magnetized in the axial direction. Each of the stator magnetic poles (1) has a plurality (Nr) of magnetic teeth at the tip end thereof, each set of the rotors (2) consists of two rotor elements (21, 22), each having Nr pieces of small tooth on the outer peripheral surface thereof, each of two permanent magnets (51) is held by the two rotor elements (21, 22) in each set of the rotor (2), and the two rotor elements (21, 22) in each set of the rotor (2) are deviated by ½ the pitch of the small rotor tooth from each other in the circumferential direction so that the small rotor teeth of adjacent rotor elements (22, 21) of two adjacent sets of the rotors (2) are the same in polarity. Nr is 3n±1, 4n±1, or 6n±1 (where, n is a positive integer).

摘要翻译： 根据本发明的永磁式旋转机具有定子，其具有环形磁性构件和从环形磁性构件径向延伸的三个，四个，五个或六个定子磁极（1），三个，四个或四个 分别缠绕在每个定子磁极（1）周围的五个相，彼此相邻的两组转子（2）沿轴向方向布置，并且与它们之间具有气隙面对定子，并且两个永磁体（51）被磁化 在轴向上。 每个定子磁极（1）在其末端具有多个（Nr）个磁齿，每组转子（2）由两个转子元件（21,22）组成，每个转子元件具有N个小齿 在其外周面上，两组永磁体（51）中的每一个由转子（2）的每组中的两个转子元件（21,22）保持，并且每组中的两个转子元件（21,22） （2）的小转子齿的间距在周向上偏离了1/2的小转子齿的间距，使得两个相邻的转子（2）组的相邻转子元件（22,21）的小转子齿是 极性相同。 Nr为3n±1，4n±1或6n±1（其中，n为正整数）。

公开(公告)号：US06628338B1

公开(公告)日：2003-09-30

申请号：US09112120

申请日：1998-07-08

申请人： David Elberbaum ,  Masafumi Sakamoto

发明人： David Elberbaum ,  Masafumi Sakamoto

IPC分类号： H04N5225

CPC分类号： G08B13/1963 ,  G08B13/19632 ,  G08B13/19636

摘要： An electric motor apparatus in a direct drive positioning device for positioning for example a television camera or a robot arm along X-Y-Z axes, which provides a direct drive which permits a free and unobstructed continuous rotation over 300° in horizontal, vertical and any other angular axes with no electrical wires or cables twisting or flexing. The apparatus includes a motor which has a hollow central shaft connected to a rotary member for mounting thereon a robot arm or television camera of the direct drive positioning device. The central shaft encloses a rotating slip ring assembly coupled to respective wires for connecting to the television camera. Electric power is supplied through the wires which are not twisted or flexed while the rotating member is being directly driven by the motor and is rotating.

摘要翻译： 一种直接驱动定位装置中的电动机装置，用于例如沿着XYZ轴定位电视摄像机或机器人臂，其提供直接驱动，其允许在水平，垂直和任何其它角度轴上的300°以上的自由且无阻碍地连续旋转 没有电线或电缆扭曲或弯曲。 该装置包括电动机，其具有连接到旋转构件的中空轴，用于在其上安装直接驱动定位装置的机器人手臂或电视摄像机。 中心轴包围一个旋转的滑环组件，其联接到相应的导线以连接到电视摄像机。 电动机通过未被扭转或弯曲的电线供电，同时旋转部件被电动机直接驱动并正在旋转。

公开(公告)号：US06504272B2

公开(公告)日：2003-01-07

申请号：US09725310

申请日：2000-11-29

申请人： Masafumi Sakamoto

发明人： Masafumi Sakamoto

IPC分类号： H02K3700

CPC分类号： H02K1/2773 ,  H02K1/2713 ,  H02K1/2786 ,  H02K21/145

摘要： Disclosed is a multi-phase electric rotating machine having toroidal coils that consists of a stator having the number P of stator units (P is integer, P>2), a rotor facing the stator with a predetermined air gap. Each of stator units is formed of a pair of stator iron cores and a toroidal coil that concentrically gets caught therebetween. Each of the stator iron cores has the number Ns of stator teeth formed around an inner circumference at equal pitch Ps, the pair of stator iron cores are arranged such that the stator teeth are shifted by ½ of the pitch Ps. The stator units are arranged in the axial direction such that the stator teeth of the units are shifted by ½P of the pitch Ps. The rotor consists of rotor magnetic bodies and a permanent magnet. Rotor teeth of Nr in the total number are arranged around the outer circumference of the rotor. The rotor teeth consist of k pair of N and S polar rotor teeth groups (k is integer, k≧1) arranged in the rotating direction. Each of the rotor teeth groups consists of the number (Nr/2k) of rotor teeth that are continuously arranged in the rotating direction.

摘要翻译： 公开了一种具有环形线圈的多相旋转电机，其具有定子单元数P（P为整数，P> 2）的定子，具有预定气隙的面向定子的转子。 每个定子单元由一对定子铁芯和同心地夹在其间的环形线圈形成。 每个定子铁芯具有以等间距Ps围绕内圆周形成的定子齿数N，一对定子铁芯被布置成使得定子齿偏移了节距Ps的1/2。 定子单元沿轴向布置，使得单元的定子齿偏移1/2的间距Ps。 转子由转子磁体和永磁体构成。 总数Nr的转子齿围绕转子的外周布置。 转子齿由沿旋转方向排列的k对N极和S极转子齿组（k为整数，k> = 1）组成。 每个转子齿组由在旋转方向上连续布置的转子齿数（Nr / 2k）组成。

公开(公告)号：US06225773B1

公开(公告)日：2001-05-01

申请号：US09422515

申请日：1999-10-21

申请人： Masafumi Sakamoto

发明人： Masafumi Sakamoto

IPC分类号： H02P800

CPC分类号： H02K37/18 ,  H02K37/20

摘要： A rotor composite type three-phase stepping motor having a stator consisting of two stator elements each having 6 n pieces of stator magnetic pole with Ns pieces of pole tooth formed on the tip end of each stator magnetic pole piece, and a permanent magnet held by the two stator elements therebetween, a rotor of magnetic material arranged so as to face to a periphery of the stator through an air gap, Nr pieces of pole tooth being formed on a periphery of the rotor, and exciting windings wound around each stator magnetic pole piece of the stator elements consisting of two sets of three-phase windings each wound around 3n pieces of stator magnetic pole among the 6 n pieces of stator magnetic pole. A mechanical angle formed between the adjacent magnetic pole pieces in the 3n pieces of magnetic pole with each set of three-phase windings is 60° m/n and a mechanical degree angle formed between the 3n pieces of magnetic pole with each set of three-phase windings is (60° m/n−&thgr;s), where Nr is a number of rotor pole teeth, each of n, m and Ns is an integer not less than 1, and &thgr;s is a step angle of (30°−Nr) k where k is an integer number not less than 1.

摘要翻译： 一种转子复合型三相步进电动机，其具有定子，该定子由两个定子元件组成，每个定子元件具有形成在每个定子磁极片的末端上的具有Ns个极齿的6n个定子磁极，以及永磁体， 它们之间的两个定子元件，通过气隙布置成与定子的周围相对配置的磁性材料的转子，在转子周边形成有Nr个极齿，以及缠绕在每个定子磁极上的励磁绕组 这些定子元件由两组三相绕组组成，每组绕组在6n个定子磁极中缠绕在3n个定子磁极上。 在每个三相绕组的3n个磁极中的相邻磁极片之间形成的机械角度为60°m / n，并且在3n个磁极与每组三相绕组之间形成的机械角度， 相位绕组为（60°m / n-t），其中Nr为转子极齿数，n，m和Ns分别为不小于1的整数，并且步长为（30°-rr ）k其中k是不小于1的整数。