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公开(公告)号：US20030052552A1
公开(公告)日：2003-03-20
申请号：US10196982
申请日：2002-07-17
申请人： Japan Servo Co. Ltd.
发明人： Masafumi Sakamoto
IPC分类号： H02K037/00
摘要： In a permanent magnet type three-phase stepping motor having a stator having 3L pieces of stator pole and a rotor having a permanent magnet magnetized so as to form a plurality (Nr) of N and S pole pairs, wherein a condition of 0.3nullnull(Nr/null)(WsnullWr)/(DsnullDr)nullnull0.5 is established, where L is an integer not less than 1, Nr is L(3nnull1), n is an integer not less than 1, Ds is an inner diameter of the stator, Dr is an outer diameter of the rotor, Ws is a width of the stator pole tooth, and Wr is a width of the rotor tooth.
摘要翻译： 在具有3L定子极的定子的永久磁铁式三相步进电动机和具有磁化以形成多个（Nr）N极和S极对的永磁体的转子的情况下，其中0.3 < 建立{（Nr / pi）（Ws + Wr）/（Ds + Dr）} <= 0.5，其中L是不小于1的整数，Nr是L（3n + 1），n是不小于 如图1所示，Ds是定子的内径，Dr是转子的外径，Ws是定子极齿的宽度，Wr是转子齿的宽度。
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公开(公告)号：US20020079750A1
公开(公告)日：2002-06-27
申请号：US09999340
申请日：2001-12-03
IPC分类号： H02K037/00
CPC分类号： H02K37/04
摘要： Disclosed is a permanent magnet type twelve-pole stepping motor of an inner rotor type or an outer rotor type. A stator comprises an annular shaped yoke portion, a stator iron-core having twelve stator main poles each having a plurality of small teeth on the tip end thereof and stator coils wound in the stator iron-core as three-phase winding. The stator rotatably supports a hybrid type rotor having a cylindrical permanent magnet that is sandwiched between a pair of rotors each having pole teeth around the circumferential surface to be opposite to the small teeth. Second, third, fourth and fifth harmonic components are removed by composing cogging torque of the respective phases by means of the three-phase twelve-pole construction. Any one harmonic component of the cogging torque among the second to fifth harmonic components is independently erased by making a difference between the small teeth pitch and the rotor teeth pitch, thereby the selected harmonic component is doubly erased.
摘要翻译： 公开了内转子型或外转子型的永磁型十二极步进电动机。 定子包括环形磁轭部分，具有十二个定子主磁极的定子铁芯，每个定子主磁极在其前端具有多个小齿，定子铁芯缠绕在定子铁芯中作为三相绕组。 定子可旋转地支撑具有圆柱形永磁体的混合型转子，该圆柱形永久磁铁被夹在一对转子之间，每个转子在圆周表面周围具有与小齿相对的极齿。 第二，第三，第四和第五谐波分量通过三相十二极结构构成各相的齿槽转矩来去除。 通过使小齿间距与转子齿距之间的差异来独立地消除第二至第五谐波分量之间的齿槽转矩的任何一个谐波分量，从而选择的谐波分量被双重擦除。
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公开(公告)号：US20040115050A1
公开(公告)日：2004-06-17
申请号：US10720715
申请日：2003-11-24
发明人： Morio Senba
IPC分类号： F01D001/02
CPC分类号： F04D29/281 , F05B2260/96
摘要： An impeller of a centrifugal fan having a casing and a multi-blade impeller rotatably supported by a blade holding base in said casing, wherein when said impeller is rotated air is sucked from an air suction port formed on one side wall of said casing, and a centrifugal force is applied on said air, so that air of high pressure is taken out through an outlet formed on a portion of an outer peripheral surface of said casing. An inner peripheral surface of the impeller is formed of a conical surface having a large diameter at the suction port and a small diameter at the blade holding base. The small diameter at the blade holding base is in the range of 70 to 90% of the large diameter at the suction port. The diameter of the inner peripheral surface of the impeller is reduced linearly from a portion at the suction side to a portion at the blade holding base side.
摘要翻译： 具有壳体的叶轮和由所述壳体中的叶片保持基座可旋转地支撑的多叶片叶轮，其中当所述叶轮旋转时，从形成在所述壳体的一个侧壁上的空气吸入口吸入空气，并且 对所述空气施加离心力，从而通过形成在所述壳体的外周面的一部分上的出口取出高压空气。 叶轮的内周面由在吸入口处具有大直径的锥形表面和在刀片保持基座处的小直径形成。 叶片保持基座处的小直径在吸入口处的大直径的70％至90％的范围内。 叶轮的内周面的直径从吸入侧的部分直线地减小到叶片保持基部侧的一部分。
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公开(公告)号：US20030057799A1
公开(公告)日：2003-03-27
申请号：US10245806
申请日：2002-09-17
发明人： Shoji Ohiwa , Kazuo Ohnishi , Yoichi Nagata , Junichi Ikeda , Tomokazu Uchiyama , Kouji Yoneda , Hideo Saito , Masahiro Mimura
IPC分类号： H02K001/12
CPC分类号： H02K29/08 , H02K11/33 , H02K21/227 , Y10S310/06
摘要： A brushless DC motor wherein a rotor has a motor shaft, a rotor yoke mounted on the motor shaft, and a ring-shaped magnet magnetized so as to have a plurality of magnet poles in the circumferential direction thereof, and held by the rotor yoke. A stator has first and second stator yokes each having main magnetic poles extending in the radial direction from the center thereof, magnetic pole pieces extending in the vertical direction from tip ends of the main magnetic poles along an inner peripheral surface of the ring-shaped magnet, a center yoke surrounding the motor shaft for connecting magnetically said first and second stator yokes, a winding assembly having an annular winding, and a printed wiring board, on which the annular winding, a electromagnetic conversion element and a driving circuit are mounted.
摘要翻译： 1.一种无刷直流电动机，其特征在于，转子具有电动机轴，安装在电动机轴上的转子轭，以及在其圆周方向上具有多个磁极的磁性的环状磁体，并由转子轭保持。 定子具有第一和第二定子轭，它们各自具有从其中心沿径向方向延伸的主磁极，磁极片沿着主磁极的尖端沿着垂直方向从环形磁体的内周面延伸 围绕电动机轴的中心磁轭，用于磁性地连接所述第一和第二定子磁轭，具有环形绕组的绕组组件和印刷电路板，环形绕组，电磁转换元件和驱动电路安装在该电路板上。
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公开(公告)号：US20020153792A1
公开(公告)日：2002-10-24
申请号：US10125381
申请日：2002-04-19
申请人： JAPAN SERVO CO., LTD
发明人： Kouki Isozaki , Yuichi Tsuda , Junji Rokunohe
IPC分类号： H02K037/00 , H02K007/20
CPC分类号： H02K37/125 , H02P8/14
摘要： Disclosed is a multi-phase flat-type PM stepping motor comprising a first motor unit having a first stator unit and a first rotor unit, and a second motor unit having a second stator unit and a second rotor unit. The first stator unit has a plurality of air-core coils that are radially arranged on a first isolating magnetic disc. The first rotor unit has a plurality of permanent magnets that are alternatively magnetized in N-pole and S-pole and radially arranged on a second magnetic disc with a predetermined air gap with respect to the coil surface of the first stator unit. In the same manner, the second stator unit has a plurality of air-core coils that are radially arranged on a third isolating magnetic disc, and the second rotor unit has a plurality of permanent magnets arranged on a fourth magnetic disc. The first and second motor units are coaxial and symmetric with each other about a non-magnetic disc arranged therebetween.
摘要翻译： 公开了一种多相扁平型PM步进电动机，其包括具有第一定子单元和第一转子单元的第一电动机单元和具有第二定子单元和第二转子单元的第二电动机单元。 第一定子单元具有径向布置在第一隔离磁盘上的多个空心线圈。 第一转子单元具有多个永磁体，它们在N极和S极中交替磁化，并且相对于第一定子单元的线圈表面径向布置在具有预定气隙的第二磁盘上。 以相同的方式，第二定子单元具有径向布置在第三隔离磁盘上的多个空心线圈，并且第二转子单元具有布置在第四磁盘上的多个永磁体。 第一和第二电动机单元彼此同轴并且彼此对称地布置在它们之间的非磁盘。
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公开(公告)号：US20010025492A1
公开(公告)日：2001-10-04
申请号：US09819345
申请日：2001-03-28
发明人： Yasushi Niwa , Kentaro Yamane , Eiji Kuroda , Kazufumi Yamashita , Hitoshi Ando , Atsuo Nakayama , Naoko Toida
IPC分类号： F25C001/00
CPC分类号： F25C5/187 , F25C1/04 , F25C5/02 , F25C2400/10 , F25C2500/02
摘要： An automatic ice maker for use in freezing compartments of the refrigerators. A planar stop arm is used as an ice cube detecting device for detecting a sufficient ice cubes stored in a bin arranged below a tray for making ice cubes. The stop arm can be swung between the bin for storing therein the ice cubes and the tray in order prevent the ice cubes stored in the bin from being molten by a head radiation from a heater provided on the tray.
摘要翻译： 一种用于冷藏冰箱隔间的自动制冰机。 平面停止臂用作冰块检测装置，用于检测存储在布置在用于制冰的托盘下方的仓内的足够的冰块。 止动臂可以在用于在其中存储冰块和托盘的箱之间摆动，以防止存储在料仓中的冰块被来自设置在托盘上的加热器的头部辐射熔化。
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公开(公告)号：US20040070304A1
公开(公告)日：2004-04-15
申请号：US10679409
申请日：2003-10-07
发明人： Yuuji Enomoto , Yasuaki Motegi , Masashi Kitamura , Yuji Takagai , Toshimi Abukawa , Takashi Ando
IPC分类号： H02K001/18
CPC分类号： H02K15/022 , H02K1/187
摘要： In an electric motor comprising a rotor, a stator, a stator core that constitutes the stator, a core section that constitutes the stator core, a plurality of split core blocks which constitute the core section, and a metallic connection housing that connects the split core blocks in dovetailed form to create one connected core section, the split core blocks are each formed of a laminated steel plate, in that the connection housing is formed of a material softer than the laminated steel plate, and the dovetailed connections at the connection housing are plastically deformed to remove the connection gap existing at each of the dovetailed connections.
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公开(公告)号：US20040061412A1
公开(公告)日：2004-04-01
申请号：US10666047
申请日：2003-09-18
发明人： Nobuhiro Ozawa , Takeshi Kirihara , Shinji Ikeda
IPC分类号： H02K013/00 , H01R039/38
CPC分类号： H01R39/381
摘要： A spring device consists of a coil spring case formed of right, left, back and front side plates and a spring receiving plate, a coil spring having a liner spring property, and a spring urging member for urging the coil spring into the coil spring case. A distance between the right and left side plates of the spring case is set a little larger than an outer diameter of the coil spring. A distance between the back and front side pates of the spring case is set about 1.5 to 2 times larger than the outer diameter of the coil spring, and a length of the spring case is set smaller than a free length of the coil spring. The coil spring is deformed and a non-linear spring property is obtained when the coil spring is urged through the spring urging member.
摘要翻译： 弹簧装置包括由右，左，后和前侧板形成的螺旋弹簧壳体和弹簧接收板，具有衬垫弹簧特性的螺旋弹簧和用于将螺旋弹簧推入螺旋弹簧壳体的弹簧推动构件 。 弹簧壳体的右侧板和左侧板之间的距离被设定为比螺旋弹簧的外径稍大。 弹簧箱的后侧和前侧之间的距离设定为比螺旋弹簧的外径大约1.5至2倍，并且弹簧壳体的长度被设定为小于螺旋弹簧的自由长度。 当螺旋弹簧通过弹簧推动构件被推动时，螺旋弹簧变形并且获得非线性的弹簧特性。
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公开(公告)号：US20030155886A1
公开(公告)日：2003-08-21
申请号：US10080131
申请日：2002-02-21
发明人： Shoji Ohiwa , Motoi Otsuka
IPC分类号： H02P001/24 , H02P001/42 , H02P003/18 , H02P005/28 , H02P007/36
CPC分类号： H02P6/28 , Y10S388/915
摘要： A fan motor driving circuit of the present invention comprises a device for detecting a power source voltage and outputting a voltage in proportion to a difference between the power source voltage and a predetermined rated voltage when the power source voltage is elevated over the rated voltage, and a device for controlling a rotary speed of a fan motor to a predetermined value by varying an elementary signal for determining the rotary speed of the fan motor according to an output voltage of the power source voltage detecting means automatically when the power source voltage is elevated over a predetermined value.
摘要翻译： 本发明的风扇电动机驱动电路包括：当电源电压升高超过额定电压时，用于检测电源电压并输出与电源电压和预定额定电压之间的差成比例的电压的装置，以及 用于通过根据电源电压检测装置的输出电压来改变用于确定风扇电动机的转速的基本信号，当电源电压升高时，自动地将风扇电动机的转速控制到预定值 预定值。
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公开(公告)号：US20030060768A1
公开(公告)日：2003-03-27
申请号：US10224912
申请日：2002-08-21
IPC分类号： A61M037/00
CPC分类号： A61M5/1456 , Y10S128/01
摘要： A first sensor (13-1), the mounting position of the first sensor (13-1) being recognized as a counting number of instruction pulses to a pulse motor (3), is arranged along a plate (11) with slits of an encoder at a portion between a position where a pushing holder (7) is connected to a plunger (9) for the liquid infusion, and a start position where the pushing holder (7) is separated from the plunger (9). A counting means (16) for counting encoder pulses from the encoder, is reset when a first sensor (13-1) is detected by a position detecting device (14) moved together with the pushing holder (7), and started to count the encoder pulses according to the movement of the pushing holder (7). A time to complete the liquid infusion is calculated by using a distance between the position where the plunger (9) is connected to the holder (7) and a liquid infusion finish position proper to the syringe, and a predetermined liquid infusion speed.
摘要翻译： 第一传感器（13-1）将第一传感器（13-1）的安装位置识别为脉冲电机（3）的指令脉冲的计数数，沿着板（11）布置，具有 在推动保持器（7）与用于液体灌注的柱塞（9）连接的位置之间的部分处的编码器以及推动保持器（7）与柱塞（9）分离的起始位置。 当通过与推动保持器（7）一起移动的位置检测装置（14）检测到第一传感器（13-1）时，用于对来自编码器的编码器脉冲进行计数的计数装置（16）被复位，并开始计数 编码器脉冲根据推动保持器（7）的移动。 通过使用柱塞（9）与保持器（7）连接的位置与注射器适当的液体输注完成位置之间的距离和预定的液体输注速度来计算完成液体输注的时间。
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