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    • 9. 发明授权
    • Magnetic sensor having excitation coil including thin-film linear conductor sections formed on bobbin with detection coil wound thereon
    • 具有励磁线圈的磁传感器,包括形成在线圈上的薄膜线性导体部分,其上缠绕有检测线圈
    • US06181130B2
    • 2001-01-30
    • US09122524
    • 1998-07-24
    • Norimitsu HoshiNaoyuki Sato
    • Norimitsu HoshiNaoyuki Sato
    • G01R3305
    • G01R33/05G01R33/045
    • A magnetic sensor includes a bobbin having one surface provided with a toroidal groove, and a toroidal inductor accommodated in the groove. The toroidal inductor has a toroidal core and an excitation coil wound on the toroidal core. The excitation coil has a conductive pattern of a plurality of thin-film linear conductors individually extending in a radial direction on a surface of the bobbin and on inner side and bottom surfaces of the toroidal groove with a predetermined angular space, a toroidal core received in the groove, and a plurality of connecting wires each of which is bridged over the toroidal groove and toroidal core to interconnect an inner end of one of the thin-film linear conductors and an outer end of a next adjacent one of the thin-film linear conductors. The conductive pattern and the connecting wires form the excitation coil wound around the toroidal core. Thus, the toroidal inductor is formed in the toroidal groove. The connecting wire may be formed as a conductor pattern on a printed circuit board. In another embodiment, the toroidal inductor may be formed on a printed circuit board, and the toroidal inductor is accommodated in the groove of the bobbin without the conductive pattern by coupling the printed circuit board onto the bobbin.
    • 磁传感器包括具有设置有环形槽的一个表面的线轴和容纳在槽中的环形电感器。 环形电感器具有环形磁芯和缠绕在环形磁芯上的励磁线圈。 励磁线圈具有多个薄膜线状导体的导体图案,该多个薄膜线状导体在筒管的表面和环形槽的内侧和底面上分别在径向方向上延伸有预定的角度空间,环形芯接收在 槽和多个连接线,每个连接线桥接在环形沟槽和环形芯上,以将薄膜线性导体之一的内端与薄膜线性导体中的下一个相邻的一端的外端互连 导体 导电图案和连接线形成缠绕在环形芯上的励磁线圈。 因此,环形电感器形成在环形沟槽中。 连接线可以形成为印刷电路板上的导体图案。 在另一个实施例中,环形电感器可以形成在印刷电路板上,并且环形电感器通过将印刷电路板耦合到线轴上而被容纳在线轴的槽中,而没有导电图案。