公开(公告)号：US5369323A

公开(公告)日：1994-11-29

申请号：US73405

申请日：1993-06-07

Applicant: Elmer C. Allwine, Jr.

Inventor： Elmer C. Allwine, Jr.

IPC: H02K37/08 ,  G01B7/30 ,  H02K1/14 ,  H02K1/27 ,  H02K3/28 ,  H02K3/46 ,  H02K3/52 ,  H02K37/12 ,  H02K37/14 ,  H02K1/22

CPC classification number: G01B7/30 ,  H02K1/146 ,  H02K1/2793 ,  H02K3/28 ,  H02K3/46 ,  H02K3/522 ,  H02K3/525 ,  H02K37/125 ,  H02K2203/03 ,  H02K3/52

Abstract: A stepper motor is provided that is compact, easily manufactured, and provides high torque. The stepper motor comprises a multi-pole composite magnet which functions as a rotor, at least one stator member which determines the angular position of this rotor, and means for positioning the rotor and the stator members on a common axis. The composite magnet comprises two pieces, each piece having a mating member and an arc-shaped member integrally formed with the mating member. To form the composite magnet, the mating members of both pieces are aligned on an axis and the arc-shaped members of both pieces are juxtaposed. The first and second pieces are magnetized in opposite axial directions which results in two advantages. First, the composite magnet provides a high area of energy conversion per unit volume, thereby significantly reducing the size of the stepper motor in comparison to prior art stepper motors. Second, because the projections and apertures are magnetized in opposite axial directions, the magnetic poles are extremely well-defined thereby ensuring that the composite magnet provides both accuracy and high torque capability.

Abstract translation: 提供了一种紧凑，易于制造并提供高扭矩的步进电机。 步进电动机包括用作转子的多极复合磁体，确定该转子的角位置的至少一个定子构件以及用于将转子和定子构件定位在公共轴上的装置。 复合磁体包括两个部件，每个部件具有配合部件和与配合部件一体形成的弧形部件。 为了形成复合磁体，两个部件的配合部件在轴线上对准，并且两个部件的弧形部件并置。 第一和第二片在相反的轴向被磁化，这导致两个优点。 首先，与现有技术的步进电机相比，复合磁体提供每单位体积的高的能量转换面积，从而显着地减小了步进电动机的尺寸。 第二，由于突起和孔径在相反的轴向上被磁化，所以磁极非常明确，从而确保复合磁体提供精度和高扭矩能力。

公开(公告)号：US5334894A

公开(公告)日：1994-08-02

申请号：US882472

申请日：1992-05-13

Applicant: Hiroshi Nakagawa

Inventor： Hiroshi Nakagawa

IPC: H02K37/12 ,  H02K37/14 ,  H02K37/20

CPC classification number: H02K37/14 ,  H02K37/12 ,  H02K37/20

Abstract: In a rotary pulse motor including: a cylindrical stator made of magnetic material; a cylindrical rotor made of magnetic material and inserted concentrically into the cylindrical stator and being rotatably supported; slit-like grooves formed at a regular angular pitch P/2 in a peripheral portion of the cylindrical rotor, teeth formed between the slit-like grooves permanent magnets inserted into the slit-like grooves and so arranged that polarities of the teeth are alternately inverted; magnetic poles formed at a regular angular pitch in the cylindrical stator facing to the teeth at a constant air gap, and coils provided on the cylindrical stator so as to a generate magnetic flux through the air gap, the cylindrical stator consists of two cylindrical members arranged in the axial direction of the cylindrical rotor and the magnetic-poles include two rows of magnetic poles formed on the cylindrical stator, the magnetic poles in the respective rows being angularly shifted from each other a predetermined pitch of P/2.

Abstract translation: 一种旋转脉冲电机，包括：由磁性材料制成的圆柱形定子; 由磁性材料制成的圆柱形转子，并且同心地插入到圆柱形定子中并被可旋转地支撑; 在圆柱形转子的周边部分中以规则的角度间距P / 2形成的狭缝状的槽，形成在插入狭缝状槽中的狭缝状槽永久磁铁之间形成的齿，并且被布置成齿的极性交替倒置 ; 在圆柱形定子中以恒定的气隙面向齿的圆柱形定子形成的磁极和设置在圆柱形定子上的线圈以通过气隙产生磁通，圆柱形定子由两个圆柱形构件组成， 在圆柱形转子的轴向上，磁极包括形成在圆柱形定子上的两排磁极，各行中的磁极彼此以预定间距的P / 2成角度地偏移。

公开(公告)号：US5245233A

公开(公告)日：1993-09-14

申请号：US866312

申请日：1992-04-09

Applicant: Roland Sudler

Inventor： Roland Sudler

IPC: H02K37/12

CPC classification number: H02K37/12

Abstract: An electromagnetic stepping motor for two directions of rotation has a stator (1), a rotor (6) and a housing (23). Four half-coils (2) with iron cores (4) are arranged equidistant from and with their axes parallel to the rotor axis (3) and perpendicularly to a return bridge (5). Each half-coil (2) is wound in the direction opposite the half-coils (2) lying opposite it. The iron cores (4) are connected magnetically to each other by a pole-shoe spider (8) at their ends which lie opposite the return bridge (5). The permanent magnet (7) of the rotor (6) is arranged within a central bore hole (9) of the pole-shoe spider (8), with the formation of an air gap.

Abstract translation: 用于两个旋转方向的电磁步进电机具有定子（1），转子（6）和壳体（23）。 具有铁芯（4）的四个半线圈（2）与其平行于转子轴线（3）并垂直于返回桥（5）的轴线等距离布置。 每个半线圈（2）沿与其相对的半线圈（2）的相反方向缠绕。 铁芯（4）通过在与返回桥（5）相对的端部处的极靴蜘蛛（8）彼此磁性地连接。 转子（6）的永磁体（7）设置在极靴座（8）的中心孔（9）内，形成气隙。

公开(公告)号：US5148895A

公开(公告)日：1992-09-22

申请号：US699499

申请日：1991-05-14

Applicant: Shinobu Kakizaki

Inventor： Shinobu Kakizaki

IPC: F16F9/46 ,  H02K37/12 ,  H02K49/10

CPC classification number: F16F9/462

Abstract: A rotary actuator comprises a housing made of a synthetic resin. A rotor carrying a plurality of permanent magnet of alternate polarity with respect to the adjacent magnet, and stator having a plurality of electromagnet which is selectively energized, are aligned in axial alignment to each other. Magnetic conductor plates are provided in alignment with the rotor and the stator. The magnetic conductor plates are supported on the inner periphery of the resin housing in opposition to the rotor and the stator for forming part of a magnetic circuit.

公开(公告)号：US5051633A

公开(公告)日：1991-09-24

申请号：US390989

申请日：1989-08-09

Applicant: Mai X. Tu ,  Michel Schwab

Inventor： Mai X. Tu ,  Michel Schwab

IPC: H02K37/16 ,  G04C13/11 ,  H02K37/00 ,  H02K37/12

CPC classification number: H02K37/125 ,  G04C13/11

Abstract: A multipolar rotor (11) is magnetized axially and comprises, in one of its faces situated opposite two pole pieces (1 and 2), alternate north and south poles distributed along its periphery. Each of the pole pieces has a concave inside rim provided with teeth (5) separated by interposed zones (6). A core (3), on which a coil (4) is mounted, magnetically couples the pole pieces to the coil. The pitch .alpha.s of the teeth of the pole pieces is different from the pitch .alpha.r of the poles of the rotor.

Abstract translation: 多极转子（11）被轴向磁化，并且在其两个极片（1和2）相对的一个面中包括沿其周边分布的交替的北极和南极。 每个极片具有设置有由插入的区域（6）分开的齿（5）的凹入的内边缘。 其上安装有线圈（4）的铁心（3）将极片磁耦合到线圈。 极片的齿的间距αs与转子的极的节距αr不同。

公开(公告)号：US4998034A

公开(公告)日：1991-03-05

申请号：US413730

申请日：1989-09-28

Applicant: Ichiro Hashimoto ,  Giichi Ishida ,  Koujirou Yamashita

Inventor： Ichiro Hashimoto ,  Giichi Ishida ,  Koujirou Yamashita

IPC: H02K1/17 ,  H02K1/27 ,  H02K15/03 ,  H02K21/22 ,  H02K37/12

CPC classification number: H02K21/22 ,  H02K1/2786 ,  H02K15/03

Abstract: A cylindrical field system of a low speed high torque motor is divided in an axial direction into first and second field system portions, these two field system portions are connected by a connecting member and a field magnet is disposed between the field system portions so that particularly machine work can be made before fitting of the field magnet. Accordingly, chips can be removed easily by use of a simple device.A cylindrical field system is divided in an axial direction into first and second field system portions, these field system portions are connected by a connecting member and cylindrical magnets fixed to a flexible belt-like fixture are wound on the field system portions between them so as to produce a rotor. Accordingly, the assembling property of the motor can be improved remarkably.

Abstract translation: 低速高扭矩电动机的圆柱形场系统沿轴向分成第一和第二场系统部分，这两个场系统部分通过连接构件连接，场磁体设置在场系统部分之间， 机器工作可以在安装场磁体之前进行。 因此，可以通过使用简单的装置容易地去除芯片。 圆柱形场系统沿轴向划分成第一和第二场系统部分，这些场系统部分通过连接构件连接，并且固定到柔性带状固定装置的圆柱形磁体缠绕在它们之间的场系统部分上，以便 以产生转子。 因此，能够显着提高电动机的组装性。

公开(公告)号：US4803389A

公开(公告)日：1989-02-07

申请号：US74823

申请日：1987-07-17

Applicant: Shigeki Ogawa ,  Eiichi Tsukada

Inventor： Shigeki Ogawa ,  Eiichi Tsukada

IPC: H02P8/14 ,  H02K29/08 ,  H02K37/12 ,  H02K37/08

CPC classification number: H02K29/08 ,  H02K37/125

Abstract: A stepping motor includes a first element including at least two permanent magnets each having a pair of N and S poles and a second element including a yoke arranged to be separated from the first element by a predetermined interval. The first and second elements can be moved relative to each other. The second element has a two-phase coil arranged on the yoke in association with a width of each pole in a moving direction of the permanent magnet and detent torque generating means for generating a static detent torque by relative movement. The detent torque generating means is arranged on the yoke such that a stable position of one of the first and second elements moved by a dynamic torque generated when one of the coils constituting the two-phase coil is energized is deviated from a stable position of a moving element caused by a detent torque generated from the detent torque generating means. A method of controlling the stepping motor is also disclosed.

Abstract translation: 步进电机包括：第一元件，其包括至少两个永磁体，每个永磁体具有一对N极和S极;以及第二元件，其包括设置成与所述第一元件分开预定间隔的磁轭。 第一和第二元件可以相对于彼此移动。 第二元件具有与永磁体的移动方向上的每个极的宽度相关联的轭架上的两相线圈和用于通过相对运动产生静态制动力矩的制动力矩产生装置。 定位转矩产生装置设置在磁轭上，使得当构成两相线圈的一个线圈通电时产生的动态转矩移动的第一和第二元件中的一个元件的稳定位置从一个稳定的位置偏离 由所述止动扭矩产生装置产生的止动扭矩引起的移动元件。 还公开了一种控制步进电动机的方法。

公开(公告)号：US4733114A

公开(公告)日：1988-03-22

申请号：US915278

申请日：1986-10-02

Applicant: Satoshi Suyama ,  Toru Arakawa

Inventor： Satoshi Suyama ,  Toru Arakawa

IPC: H02K37/16 ,  H02K37/12 ,  H02K37/14 ,  H02K37/00

CPC classification number: H02K37/12

Abstract: A compact stepping motor is equipped with at least four stator plates positioned in parallel with each other, a rotor with a rotary axis perpendicular to the stator plates, and at least two energizing coils each positioned between each two of the stator plates. The rotor is positioned out of the energizing coils. The center axes of the coils and the rotary axis of the rotor are in parallel with each other. One coil is positioned between one pair of stator plates and one coil is positioned between the other pair of stator plates and share a common center axis. Circumferentially arranged stator poles extend from each stator plate perpendicularly to the each stator plate so as to surround the rotor at a specified distance.

Abstract translation: 紧凑型步进电动机配备有彼此平行定位的至少四个定子板，具有垂直于定子板的旋转轴的转子和分别定位在每个定子板之间的至少两个通电线圈。 转子位于激励线圈外。 线圈的中心轴线和转子的旋转轴线彼此平行。 一个线圈位于一对定子板之间，一个线圈位于另一对定子板之间，并共享共同的中心轴线。 周向布置的定子极从每个定子板垂直于每个定子板延伸，以便以特定的距离围绕转子。

公开(公告)号：US4680494A

公开(公告)日：1987-07-14

申请号：US720409

申请日：1985-03-28

Applicant: Michel Grosjean

Inventor： Michel Grosjean

IPC: G04C13/11 ,  G04C15/00 ,  H02K21/24 ,  H02K37/12 ,  E05G1/12

CPC classification number: H02K37/125 ,  G04C13/11 ,  G04C15/00 ,  H02K21/24

Abstract: A multiphase motor including a facially magnetized rotor having N/2 pairs of poles per face. The motor also includes a stator for each phase. Each stator has a first and second pair of polar pieces, each pair of polar pieces including internal and external substantially coplanar polar pieces interpositioned one within the other. The internal stator pieces of one phase of the motor are constructed with fractional stator poles, whereas all remaining stator poles are full. Each phase includes a core piece which has a first end connected to the internal polar pieces, and a second end connected to external polar pieces. Each core of each phase has a coil wound thereon. A motor constructed according to the invention prevents loss no magnetic flux from the magnetized rotor. This allows the motor to be highly energy efficient, and compact in size.

Abstract translation: PCT No.PCT / CH84 / 00119 Sec。 371日期：1985年3月28日 102（e）1985年3月28日PCT申请日1984年7月30日PCT公布。 出版物WO85 / 00705 日期：1985年2月14日。一种多相电动机，其包括每面具有N / 2对极点的面磁化转子。 电机还包括每相的定子。 每个定子具有第一和第二对极性部件，每对极性部件包括内部和外部基本上共面的极片，插入另一个中。 电动机一相的内部定子片由分数定子极构成，而所有剩余的定子极都是满的。 每相包括具有连接到内部极片的第一端和连接到外部极片的第二端的芯片。 每相的每个芯具有缠绕在其上的线圈。 根据本发明构造的电动机防止没有来自磁化转子的磁通量的损失。 这允许电动机高效节能，并且尺寸紧凑。

公开(公告)号：US4517478A

公开(公告)日：1985-05-14

申请号：US596442

申请日：1984-04-03

Applicant: Claude Oudet

Inventor： Claude Oudet

IPC: H02K37/12 ,  H02K37/00

CPC classification number: H02K37/125

Abstract: An electric stepper motor of the type comprising an axially magnetized rotor disc and a plurality of elemental magnetic stator circuits is disclosed. Each elemental circuit is formed of two U-shaped portions arranged opposite each other, one of each U being in contact with the opposite U-end and the second U-end being spaced from the opposite one to form an air gap for the rotor disc, the centers of the ends forming the airgap being angularly shifted with respect to each of the U-ends in contact with each other so as to compensate the third and/or fifth harmonics in the torque due to the driving current.

Abstract translation: 公开了一种包括轴向磁化转子盘和多个元素磁定子电路的类型的步进电动机。 每个元件电路由两个彼此相对布置的U形部分形成，每个U中的一个与相对的U形端部接触，并且第二U形端部与相对的U形端部间隔开，以形成转子盘的气隙 形成气隙的端部的中心相对于每个U形头彼此接触地成角度地移动，以便补偿由驱动电流引起的扭矩的第三和/或五次谐波。