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    • 7. 发明授权
    • Magnetic tape loading mechanism and method
    • 磁带装载机理及方法
    • US4899235A
    • 1990-02-06
    • US152377
    • 1988-02-04
    • Kiyoshi KanoNobuyuki KakuAtsuo OsawaShinya FujimoriYoshihiro Fukagawa
    • Kiyoshi KanoNobuyuki KakuAtsuo OsawaShinya FujimoriYoshihiro Fukagawa
    • G11B15/675G11B15/665
    • G11B15/6653
    • A tape loading mechanism for a video cassette recording apparatus in which a magnetic tape held in the cassette is withdrawn therefrom by a tape loading arm and is wound around a rotary cylinder. During this time, the cassette is fixed on the upper surface of a chassis having a cam bore, which is driven by a rotary arm in which a pin inserted in the cam bore is set up. This cam bore is provided with a first cam surface having a radius of curvature equal to that of a locus of a turning movement of the pin, a second cam surface formed continuously from the first cam surface and having a radius of curvature different from that of a locus of a turning movement of the pin, and a third cam surface formed continuously from the second cam surface and having a radius of curvature equal to that of a locus of a turning movement of the pin. Accordingly, the movement of the cassette is started at a predetermined period of time after the movement of the tape loading arm has been started, and it is completed before the movement of the tape loading arm has been completed.
    • 用于盒式录像装置的磁带装载机构,其中保持在磁带盒中的磁带通过磁带装载臂从磁带装载臂中取出并卷绕在旋转磁盘上。 在此期间,盒被固定在具有凸轮孔的底盘的上表面上,该凸轮孔由其中设置有插入凸轮孔中的销的旋转臂驱动。 该凸轮孔设置有第一凸轮表面,其第一凸轮表面的曲率半径等于销的转动运动轨迹的曲率半径,第二凸轮表面从第一凸轮表面连续形成,并且具有与 销的转动轨迹,以及从第二凸轮表面连续地形成的曲率半径等于销的转动轨迹的曲率半径的第三凸轮表面。 因此,在磁带装载臂的移动已经开始之后的预定时间段开始磁带盒的移动,并且在磁带装载臂的移动已经完成之前完成。