公开(公告)号：US4833562A

公开(公告)日：1989-05-23

申请号：US56954

申请日：1987-06-03

申请人： Masanori Kochi ,  Juichi Morikawa ,  Makoto Ibe ,  Toshio Osada ,  Hitoshi Takizawa ,  Hideyuki Kawase ,  Ikuo Nishida ,  Eiichi Hanawa ,  Hitoshi Okabe ,  Tosio Uno

发明人： Masanori Kochi ,  Juichi Morikawa ,  Makoto Ibe ,  Toshio Osada ,  Hitoshi Takizawa ,  Hideyuki Kawase ,  Ikuo Nishida ,  Eiichi Hanawa ,  Hitoshi Okabe ,  Tosio Uno

IPC分类号： G11B15/61

CPC分类号： G11B15/61

摘要： A rotary magnetic head cylinder device for use in a helical-scanning system video tape recorder has a projection provided on a tape running race of a stationary lower cylinder near a location at which a magnetic tape leaves from the lower cylinder. The projection is preferably integral with the tape running race and has a small area which is defined by a shoulder circumferentially extending identically with a tape guide shoulder contouring the lower edge of the tape running race and which spreads perpendicularly to the tape running race, and an upper surface coplanar with the top face of the lower cylinder, and a height defined by a protruded length radially outwardly toward the outer circumferential surface of the lower cylinder. The projection serves to reduce vibrations of the magnetic tape generated when the video head carried by the rotary upper cylinder leaves from the magnetic tape.

摘要翻译： 用于螺旋扫描系统磁带录像机的旋转磁头气缸装置具有设置在固定下气缸的磁带运行轨迹附近的突起，靠近磁带从下气缸离开的位置。 突出部优选地与带运行座圈成一体，并且具有小的面积，其由肩部周向地延伸的肩部限定，带状引导肩部轮廓形成带运行跑道的下边缘并垂直于带运行跑道扩展， 上表面与下圆筒的顶面共面，并且由径向向外朝向下圆筒的外圆周表面突出的长度限定高度。 该突出部用于减小当旋转的上部气缸承载的视频磁头从磁带离开时产生的磁带的振动。