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    Non-contact position sensor
    2.
    发明公开
    Non-contact position sensor 有权
    Drosselklappeneinheit mit einer magnetisch abgeschirmten Vorrichtungfürkontaktlose Positionsmessung

    公开(公告)号：EP1223409A2

    公开(公告)日：2002-07-17

    申请号：EP01107716.1

    申请日：2001-03-30

    申请人： Hitachi, Ltd. ,  Hitachi Car Engineering Co., Ltd.

    发明人： Miyata, Kenji, Hitachi, Ltd., Int. Prop. Gp. ,  Shimada, Satoshi, Hitachi, Ltd., Int. Prop. Gp. ,  Tajima, Fumio, Hitachi, Ltd., Int. Prop. Gp. ,  Usui, Toshifumi, Hitachi, Ltd., Int. Prop. Gp. ,  Kubota, Masanori

    IPC分类号： G01D5/14

    CPC分类号： G01D5/145

    摘要： A non-contact sensor for sensing a rotational position of a rotating object is provided. A ring-shaped permanent magnet (10) magnetized in the axial direction is sandwiched between two pairs of magnetic plates (11, 12, 13, 14) from above and below. Two pairs of upper and lower protruded magnetic substance portions (16, 17, 18, 19) are provided between the upper and lower magnetic plates (11, 12, 13, 14) at opposite outer ends thereof. Magnetic sensitive devices (21, 22) are inserted in air gaps between the two pairs of upper and lower protruded magnetic substance portions (16, 17, 18, 19). A magnetic flux generated from the ring-shaped permanent magnet (10) is substantially concentrated to the protruded magnetic substance portions (16, 17, 18, 19) and passes the magnetic sensitive devices (21, 22). The amount of magnetic flux passing each magnetic sensitive device (21, 22) is substantially proportional to the rotational angle of the ring-shaped permanent magnet (10). The rotational position of the ring-shaped permanent magnet (10) and hence the rotational position of a rotating shaft (15) supporting the ring-shaped permanent magnet (10) can be sensed in a non-contact manner as a signal output from the magnetic sensitive device. Since the magnetic flux is effectively concentrated to positions where magnetic sensitive devices (21, 22) are attached, a non-contact rotational position sensor having high accuracy and high sensitivity can be obtained.

    摘要翻译： 提供了用于感测旋转物体的旋转位置的非接触传感器。 沿轴向磁化的环形永磁体（10）从上下夹在两对磁性板（11,12,13,14）之间。 两对上，下突出的磁性体部分（16,17,18,19）设置在上下磁性板（11,12,13,14）的相对的外端。 磁敏装置（21,22）插入在两对上下突出的磁性体部分（16,17,18,19）之间的气隙中。 从环形永磁体（10）产生的磁通量大致集中到突出的磁性体部分（16,17,18,19）并通过磁敏装置（21,22）。 通过每个磁敏装置（21,22）的磁通量大致与环形永磁体（10）的旋转角成正比。 环形永磁体（10）的旋转位置以及支撑环形永磁体（10）的旋转轴（15）的旋转位置可以以非接触的方式被感测为从 磁敏装置。 由于磁通量被有效地集中到安装了感磁元件（21,22）的位置，所以可以获得具有高精度和高灵敏度的非接触式旋转位置传感器。

    Claw pole generator with permanent magnets
    3.
    发明公开
    Claw pole generator with permanent magnets 有权
    永久磁铁（Klauenpolgenerator）

    公开(公告)号：EP1227566A2

    公开(公告)日：2002-07-31

    申请号：EP01119779.5

    申请日：2001-08-28

    申请人： Hitachi, Ltd.

    发明人： Kanazawa, Hiroshi, Hitachi, Ltd., Int. Prop. Gp. ,  Miyata, Kenji, Hitachi, Ltd., Int. Prop. Gp. ,  Kawabata, Kaoru, Hitachi, Ltd., Int. Prop. Gp. ,  Maki, Kohji, Hitachi, Ltd., Int. Prop. Gp. ,  Tahara, Kazuo, Hitachi, Ltd., Int. Prop. Gp. ,  Sasaki, Susumu, Hitachi, Ltd., Int. Prop. Gp. ,  Takahata, Ryoichi, Hitachi, Ltd., Int. Prop. Gp.

    IPC分类号： H02K1/22

    CPC分类号： H02K21/044

    摘要： The invention relates to a vehicular alternator which can effectively utilize the magnetic flux of a permanent magnet (7) disposed between claw-type magnetic poles (5A, 5B) and can improve an output of the alternator. The vehicular alternator comprises a rotor (1) and a stator (2) constituted by coiling stator windings (15) over a stator core (14) the rotor (1) comprising a pair of claw-type magnetic poles (5A, 5B) arranged in an opposed relation a permanent magnet (7) disposed between adjacent two of a plurality of claws (5Aa, 5Ba) provided on the pair of claw-type magnetic poles (5A, 5B), and field windings (6) coiled radially inward of the plurality of claws (5Aa, 5Ba). Each of the plurality of claws (5Aa, 5Ba) of the rotor (1) is formed to have a shape coming into contact with the whole of a magnetic pole surface of the permanent magnet (7).

    摘要翻译： 本发明涉及一种能够有效利用设置在爪型磁极（5A，5B）之间的永久磁铁（7）的磁通的车辆用交流发电机，能够提高交流发电机的输出。 车辆用交流发电机包括转子（1）和定子（2），定子（2）通过将定子绕组（15）卷绕在定子铁心（14）上而构成，转子（1）包括一对爪型磁极（5A，5B） 在相对的关系中，设置在设置在所述一对爪型磁极（5A，5B）上的多个爪（5Aa，5Ba）中的相邻两个之间的永久磁体（7）和位于所述一对爪型磁极（5A，5B）上的径向向内卷绕的励磁绕组 多个爪（5Aa，5Ba）。 转子（1）的多个爪（5Aa，5Ba）中的每一个都形成为与永磁体（7）的整个磁极表面接触的形状。