Accurate UHF television tuning system and method of fabricating same
    1.
    发明授权
    Accurate UHF television tuning system and method of fabricating same 失效
    精确的UHF电视调谐系统及其制作方法

    公开(公告)号:US4091513A

    公开(公告)日:1978-05-30

    申请号:US786644

    申请日:1977-04-11

    Abstract: A highly accurate UHF television tuner utilizes an improved housing and an improved mounting system for securing the tuning rotor and stator within the housing. The housing is fabricated from sheet metal that is welded at the corners to provide mechanical rigidity, and soldered at the corners to provide a good electrical contact. A cover is placed over an open end of the housing and soldered at the corners further to increase the mechanical rigidity of the housing. The depth of the housing is increased to reduce the effects of the housing on the tuner elements. An eyelet is mounted in one end of the housing for supporting the rotor shaft, and the stator is mounted by insulating posts that are inserted through sleeves integrally formed in the housing. An improved contact for more effectively grounding the rotor shaft to the housing is provided, and an improved detenting system is provided for the selector shaft to reduce the effects of inertial creep. An improved method is provided for mounting the rotor plates to the rotor shaft and for mounting the stator plates to the housing to improve the accuracy of alignment between the rotor and stator plates.

    Abstract translation: 高精度的UHF电视调谐器利用改进的壳体和改进的安装系统来将调谐转子和定子固定在壳体内。 外壳由金属板制成,焊接在拐角处以提供机械刚性,并在拐角处焊接以提供良好的电接触。 将盖放置在壳体的开口端上,并进一步在拐角处焊接以增加壳体的机械刚性。 壳体的深度增加以减少外壳对调谐器元件的影响。 安装在壳体的一端的孔眼用于支撑转子轴,并且定子由通过一体地形成在壳体中的套筒插入的绝缘柱安装。 提供了一种改进的接触件,用于更有效地将转子轴接地到壳体,并且为选择器轴提供了改进的制动系统,以减少惯性蠕变的影响。 提供了一种改进的方法,用于将转子板安装到转子轴上并将定子板安装到壳体上,以提高转子和定子板之间的对准精度。

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