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    Apparatus for lifting and lowering a linear tracking tone arm in a record player
    3.
    发明授权
    Apparatus for lifting and lowering a linear tracking tone arm in a record player 失效
    用于提升和降低记录播放器中的线性跟踪音臂的装置

    公开(公告)号：US4470130A

    公开(公告)日：1984-09-04

    申请号：US399696

    申请日：1982-07-19

    申请人： Tetsuro Sakaki ,  Akira Yamanaka

    发明人： Tetsuro Sakaki ,  Akira Yamanaka

    IPC分类号： G11B3/08 ,  G11B3/085 ,  G11B3/38 ,  G11B21/12 ,  G11B21/08 ,  G11B3/36

    CPC分类号： G11B3/08519 ,  G11B3/08587 ,  G11B3/0859 ,  G11B3/38

    摘要： A linear tracking tone arm having a stylus is pivotably mounted on a carriage slidably movable along a guide rod and has a hook extending in operative engagement with a pin on a swing arm slidably movable with the carriage along the guide rod. The guide rod is angularly movable about its own axis to turn the swing arm for lifting or lowering the linear tracking tone arm. A mechanism for turning the guide rod includes a solenoid, a plunger actuatable thereby, a cam pivotably movable by the plunger, and a rotation control arm coupled with the guide rod and held in engagement with the cam. The carriage supports thereon a guide frame for guiding a pin extending from the tone arm to cancel a tracking error when the stylus is led into the lead-out groove on a record disc.

    摘要翻译： 具有触针的线性跟踪音臂可枢转地安装在滑架上可滑动地沿着导杆移动的滑架上，并且具有与可滑动地沿托架滑动地移动的摆动臂上的销可操作地接合的钩。 导杆可以围绕其自身的轴线成角度地移动，以转动摆臂来提升或降低线性跟踪音臂。 用于转动导杆的机构包括螺线管，可致动的柱塞，可由柱塞可枢转运动的凸轮，以及与导向杆联接并与凸轮接合的旋转控制臂。 滑架在其上支撑引导框架，用于引导从音调臂延伸的销，以在触针被引导到记录盘上的导出槽时消除跟踪误差。