Mechanism for balancing a rotary magnetic head apparatus
    32.
    发明授权
    Mechanism for balancing a rotary magnetic head apparatus 失效
    平衡旋转磁头装置的机构

    公开(公告)号:US5051852A

    公开(公告)日:1991-09-24

    申请号:US343749

    申请日:1989-04-27

    CPC分类号: G11B15/61 G11B33/08 G11B5/53

    摘要: A rotary magnetic head apparatus for use in a VTR and producing a low level of vibration by restraining the unbalance of an overall rotary body of the magnetic head apparatus. The apparatus includes a fixed cylinder for supporting a rotary shaft via bearings, a rotary cylinder secured to one end of the rotary shaft and having magnetic heads, and a motor rotor directly coupled with the other end of the rotary shaft. At least one first balancer and at least one second balancer are respectively provided in the rotary cylinder and the rotor so as to compensate for the unbalance of the rotary body composed of the rotary cylinder, the rotary shaft, and the rotor.

    摘要翻译: 一种用于VTR的旋转磁头装置,通过抑制磁头装置的整个旋转体的不平衡而产生低水平的振动。 该装置包括用于通过轴承支撑旋转轴的固定气缸,固定到旋转轴的一端并具有磁头的旋转圆筒,以及与旋转轴的另一端直接连接的马达转子。 至少一个第一平衡器和至少一个第二平衡器分别设置在旋转圆筒和转子中,以补偿由旋转圆筒,旋转轴和转子组成的旋转体的不平衡。

    Apparatus for recording and/or reproducing video signals
    33.
    发明授权
    Apparatus for recording and/or reproducing video signals 失效
    用于记录和/或再现视频信号的装置

    公开(公告)号:US4675752A

    公开(公告)日:1987-06-23

    申请号:US760622

    申请日:1985-07-30

    CPC分类号: G11B15/20 G11B15/1875

    摘要: An apparatus for recording and/or reproducing video signals on a magnetic tape wherein a capstan and driving motor are coupled by a belt for driving the tape. The motor is connected to a power supply circuit through a switching circuit and voltage is applied from the switching circuit to the motor for driving the belt and therewith the tape. The motor driving voltage application time is controlled to be substantially equal to an integer multiple of the reciprocal of the resonance frequency of the belt driving system.

    摘要翻译: 一种用于在磁带上记录和/或再现视频信号的装置,其中主导轴和驱动电机通过用于驱动磁带的皮带联接。 电动机通过开关电路连接到电源电路,并且电压从开关电路施加到用于驱动带和带的电动机。 马达驱动电压施加时间被控制为基本上等于带驱动系统的共振频率的倒数的整数倍。

    Tape guide of magnetic recording and reproducing apparatus
    34.
    发明授权
    Tape guide of magnetic recording and reproducing apparatus 失效
    磁记录和重放装置的磁带导轨

    公开(公告)号:US4441133A

    公开(公告)日:1984-04-03

    申请号:US282806

    申请日:1981-07-13

    CPC分类号: G11B15/6656 G11B15/60

    摘要: A guide roller of a tape traveling system of a video tape recorder and the like for changing the direction of travel of a magnetic tape and regulating the heightwise position of the tape during its travel including a roller body of a diameter not constant but smoothly varying axially thereof for exerting on the traveling tape a force tending to shift the tape axially. The guide roller has a flange at the top and the bottom of the roller body having a tape guide surface for contacting the edge of the tape which is not perpendicular to the axis of the roller body but convex as viewed from the respective end of the roller body, to prevent the edge of the tape from striking the edges of the flanges. The roller body may be conical at its outer peripheral surface and at the tape guide surface of each flange.

    摘要翻译: 一种用于改变磁带行进方向的磁带行进系统的引导辊,并且在其行进期间调节带的高度位置,包括直径不恒定但平滑地沿轴向变化的辊体 用于在行进带上施加倾向于轴向移动带的力。 引导辊在辊体的顶部和底部具有凸缘,该凸缘具有用于接触带的边缘的带引导表面,该带的边缘不垂直于辊体的轴线,而是从辊的相应端观察凸出 本体,以防止带子的边缘撞击法兰的边缘。 辊体可以在其外周表面和每个凸缘的带引导表面处是圆锥形的。