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    Disk drive unit
    2.
    发明公开
    Disk drive unit 失效
    电动机和电动机。

    公开(公告)号：EP0509635A2

    公开(公告)日：1992-10-21

    申请号：EP92302048.1

    申请日：1992-03-11

    申请人： HITACHI, LTD. ,  JAPAN SERVO CO. LTD.

    发明人： Tajima, Fumio ,  Kanazawa, Hiroshi ,  Katayama, Hiroshi ,  Ohnishi, Kazuo ,  Takashashi, Tadashi ,  Mutoh, Nobuyoshi ,  Morinaga, Shigeki ,  Tsuboi, Nobuyoshi ,  Nihei, Hideki

    IPC分类号： H02K1/14 ,  H02K7/14 ,  H02K29/00 ,  H02K21/16 ,  G11B19/20 ,  G11B25/04 ,  G11B17/028 ,  G11B19/28 ,  G11B21/02 ,  H01L41/09 ,  G11B33/12

    CPC分类号： G11B25/043 ,  G11B19/20 ,  H02K1/14 ,  H02K1/146 ,  H02K7/14 ,  H02K16/00 ,  H02K21/16 ,  H02K41/03 ,  H02K2201/15

    摘要： A motor has a stator (4) and a rotor (3), the stator (4) having cores (9A) and drive coils (1) which generate magnetic fields for rotating the rotor (3). The stator (4) also has a yoke (9B,9C) surrounding the rotor (3) and the rotor (3) is positioned such that it is closer to one part (9B) of the outer periphery of the yoke than another part (9B) of the yoke. Such a motor is particularly suitable for use in a disk drive unit as a spindle motor (2) for rotating the disk (1). Then an actuator (12) for moving a head (11) may be located adjacent the part (9B) of the outer periphery of the yoke (9b,9C) which is closest to the rotor. This permits the head (11) to approach closely the axis of rotation of the disk (1) without the spindle motor (2) interfering with the movement of the head (11). The continuous yoke (9B,9C) prevents magnetic flux leakage from the spindle motor interfering with the actuator (12). The actuator (12) may itself have a yoke (9D) integral with the yoke (9B,9C) of the spindle motor (2), and/or other components in common.

    摘要翻译： 电动机具有定子（4）和转子（3），定子（4）具有芯（9A）和驱动线圈（1），其产生用于旋转转子（3）的磁场。 定子（4）还具有围绕转子（3）的轭（9B，9C），并且转子（3）被定位成使其更靠近轭的外周的一部分（9B）而不是另一部分 9B）。 这样的电动机特别适用于作为用于旋转盘（1）的主轴电机（2）的盘驱动单元。 然后，用于移动头部（11）的致动器（12）可以位于最接近转子的轭架（9b，9C）的外周的部分（9B）附近。 这使得头部11能够紧密地接近盘（1）的旋转轴线，而主轴马达（2）不影响头部（11）的运动。 连续轭（9B，9C）防止来自主轴电动机的磁通量泄漏干扰致动器（12）。 致动器（12）本身可以具有与主轴电机（2）的轭架（9B，9C）成一体的轭架（9D）和/或共同的其他部件。

    Power feeding system for an elevator
    5.
    发明公开
    Power feeding system for an elevator 有权
    电源系统的电梯

    公开(公告)号：EP1106559A3

    公开(公告)日：2003-01-29

    申请号：EP00126896.0

    申请日：2000-12-07

    申请人： Hitachi, Ltd.

    发明人： Nihei, Hideki ,  Nagase, Hiroshi ,  Inaba, Hiromi ,  Tadokoro, Toshiyuki

    IPC分类号： B66B1/28 ,  B66B17/12

    CPC分类号： B66B11/0055 ,  B66B1/30 ,  B66B17/12

    摘要： An elevator in which an elevator-car and a counter weight are hung like a draw well. The elevator includes a receiving unit for receiving an electric power from a feeding unit provided in a hoistway, an inverter for converting the received electric power into ac power, a motor connected to an ac side of the inverter, for driving the counter weight in up and down directions, a sensor for detecting a position of a receiving unit, and a control unit for controlling an inverter on the basis of the position detected by the position sensor. The counter weight has the receiving means, the inverter, and the motor.