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    • 1. 发明公开
    • Screened indicating instrument
    • Abgeschirmtes Anzeigeinstrument。
    • EP0469808A1
    • 1992-02-05
    • EP91306889.6
    • 1991-07-26
    • NIPPON SEIKI CO. LTD.
    • Todoroki, HiroshiOhtake, ToshiyukiZaima, HidekiSato, Koichi
    • G01R1/18G01D11/24G12B17/00
    • G01R7/06G01D11/24G01R1/18G12B17/00
    • Disclosed is a moving magnet type indicating instrument in which a magnet is mounted in bobbins produced of a synthetic resin, a needle shaft is fixed to said magnet, said needle shaft being inserted into said bobbins through the upper central part thereof, said bobbins being wound with a coil at an angle, said bobbins being mounted in a magnetic shielding case, said coil being electrically connected at the end thereof to a terminal provided on said bobbins in the outward position of said magnetic shielding case, said terminal being electrically connected to a printed-circuit board, said magnet being thus driven to make an angular rotation by a composite magnetic field produced in accordance with the quantity of electric current flowing into said coil.
    • 公开了一种移动磁体型指示仪器,其中磁体安装在由合成树脂制成的线轴中,针轴固定到所述磁体上,所述针轴通过其上中心部分插入所述线轴中,所述线轴被卷绕 所述线圈以一定角度安装在所述磁屏蔽壳体中,所述线圈的端部在所述磁屏蔽壳体的向外位置处电连接到设置在所述线轴上的端子,所述端子电连接到 印刷电路板,所述磁体被驱动以通过根据流入所述线圈的电流量产生的复合磁场进行角度旋转。
    • 4. 发明公开
    • Stepping motor type indicators
    • SchrittmotorähnlicheAnzeigeeinrichtungen
    • EP0959359A1
    • 1999-11-24
    • EP99303264.8
    • 1999-04-27
    • NIPPON SEIKI CO., LTD.
    • Sato, HitoshiSato, KoichiNumaya, HiroyasuMatsuda, HiroyukiIwahashi, MasaruTsurumaki, KeijiJinushi, Koichi
    • G01R7/06H02K37/14
    • H02K37/14G01D7/00G01R7/06
    • [problem]
      A stepping motor type indicator is provided, whose stepping motor forms unambiguous stable points which produce a sufficiently strong holding force in a non-excited condition, making it possible to suppress undesirable movements of a pointer.
      [Means for Resolution]
      A stepping motor type indicator comprises a stepping motor 2 which is constructed of a rotor 28 having an output shaft 27 and stators A, B having yokes 23, 26, from which a plurality of 232, 233, 262, 263 extend toward a curved outer surface of the rotor 28, and exciting coils 21, 24 for magnetizing the yokes 23, 26, respectively, wherein the rotor 28 is driven to rotate in accordance with a measurement value, a pointer 4 which is connected to the output shaft 27 of the stepping motor 2 and indicates the measurement value on a dial plate 3, and a stopper pin (rotor arresting means) 7 for stopping the pointer 4 at a specified stopping position P on the dial plate 3. When the exciting coils 21, 24 are not excited, there are formed a plurality of stable points a-1 of the rotor 28 along the turning direction of the pointer 4 due to magnetic forces exerted between the rotor 28 and the yokes 23, 26. The stopping position P of the rotor 28 (pointer 4) determined by the stopper pin 7 is set at a point closer to the stable point a which is located on a decreasing side of dial reading than an approximately middle point M between arbitrarily selected two adjacent stable points (a and b in this example). Since the pole end area of a specific pole tooth 232a chosen from the multiple pole teeth 232, 233, 262, 263 facing the rotor 28 is made different from the pole end areas of the other pole teeth 232, 233, 262, 263 facing the rotor 28 in this construction, the individual stable points a-1 become unambiguous and produce strong holding forces so that an attracting force exerted by the stable point a on the pointer 4 (rotor 28) toward the stopper pin 7 is increased, making it possible to positively suppress undesirable movements of the pointer 4.
    • 提供了步进电动机型指示器,其步进电机形成明确的稳定点,在非激励状态下产生足够坚固的保持力,使得可以抑制指示器的不期望的移动。 Ä用于分辨率的步骤步进电机型指示器包括步进电动机2,其由具有输出轴27的转子28和具有磁轭23,26的定子A,B构成,多个232,233,262,263从该延伸朝向 转子28的弯曲外表面和用于分别磁化轭铁23,26的励磁线圈21,24,其中转子28根据测量值被驱动旋转;指针4,其连接到输出轴 27表示表盘3上的测量值,以及用于将指针4停止在表盘3上的指定停止位置P的止动销(转子止动装置)7。当励磁线圈21, 24不被激励,由于施加在转子28和轭23,26之间的磁力,转子28沿着指针4的转动方向形成多个稳定点a-1。停止位置P 转子28(指针4)由th确定 e止动销7被设定在位于拨盘读取的减少侧的稳定点a的点比在任意选择的两个相邻稳定点(本例中为a和b)之间的近似中点M的点处。 由于从面对转子28的多个极齿232,233,262,263选择的特定极齿232a的极端区域与另一个极齿232,233,262,263的极端部区域不同, 在这种结构中的转子28,各个稳定点a-1变得明确,并产生很强的保持力,使得稳定点a施加在指针4(转子28)上朝向止动销7的吸引力增加, 以积极地抑制指针4的不期望的移动。