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    • 1. 发明授权
    • Dynamic electroacoustic transducer having a moving coil in an air gap
filled with a magnetic liquid
    • 具有填充有磁性液体的气隙中的动圈的动态电声换能器
    • US4303806A
    • 1981-12-01
    • US107783
    • 1979-12-28
    • Karl-Heinz Thiele
    • Karl-Heinz Thiele
    • H04R9/02H04R9/06
    • H04R9/027
    • A dynamic electroacoustic transducer includes a moving coil which is arranged in an air gap between a pole piece and a pole plate which is filled with a magnetic liquid. At least the outside of the coil has a smooth surface in contact with the magnetic liquid. The coil may also advantageously be wound on a carrier from a wire which is flat at least on one side so that this flat side is turned outwardly and presents a smooth continuous surface. The cross-section of such a wire may advantageously be rectangular. The coil may be coated on its outside surface with a foil of well-conducting material, such as aluminum, or the grooves between a cylindrical coil, for example, may be filled with a lacquer or the like.
    • 一种动态电声换能器包括一个运动线圈,其被布置在充满磁性液体的极片和极板之间的气隙中。 至少线圈的外部具有与磁性液体接触的光滑表面。 线圈还可以有利地从至少在一侧上平坦的线缠绕在载体上,使得该平坦侧面向外转动并呈现平滑的连续表面。 这种线的横截面可以有利地是矩形的。 线圈可以用诸如铝的导电材料的箔涂覆在其外表面上,或者例如可以用漆等填充圆柱形线圈之间的凹槽。
    • 4. 发明授权
    • Dynamic transducer with moving coil in an air gap filled with magnetic
liquid
    • 具有充满磁性液体的气隙的动圈式动圈
    • US4320263A
    • 1982-03-16
    • US109184
    • 1980-01-02
    • Karl-Heinz Thiele
    • Karl-Heinz Thiele
    • H04R9/02
    • H04R9/027
    • A dynamic electroacoustic transducer comprising a magnetic pole case defining a magnetic air gap, a coil movably mounted in the air gap and spaced from the magnetic pole case with magnetic liquid extending between the coil and the case in the air gap. A diaphragm is connected to the coil and attached peripherally to the magnetic pole casing so that airtight spaces are defined above and below the coil which are in communication with each other. The airtight sealing of the spaces prevents the liquid portions of the magnetic liquid to evaporate which would result in deterioration of the characteristics of the dynamic electroacoustic transducer.
    • 一种动态电声换能器,包括限定磁气隙的磁极壳体,可移动地安装在气隙中并与磁极壳体间隔开的线圈,该磁线圈与在气隙中的线圈和壳体之间延伸的磁性液体间隔开。 隔膜连接到线圈并且外围地附接到磁极壳体,使得在彼此连通的线圈上方和下方限定气密空间。 空间的气密密封防止了液体的液体部分蒸发,这将导致动态电声换能器的特性的恶化。