公开(公告)号：US4644428A

公开(公告)日：1987-02-17

申请号：US651431

申请日：1984-09-17

申请人： Philip Tomasi

发明人： Philip Tomasi

IPC分类号： G11B17/028 ,  G11B19/12 ,  G11B5/016 ,  G11B17/02

CPC分类号： G11B17/0286 ,  G11B19/12

摘要： A floppy disk drive incorporates a cantilevered arm carrying at its free end a floppy disk positioning and clamping cone, the arm being pivotally mounted along the rear edge of the disk drive base frame. A longitudinal control shaft, rotatable by a control lever on the front panel of the drive, includes a cam riding in contact with a cam surface in a central region of the arm. The rear extremity of the control shaft is journaled in a variable height bearing block mounted on the base frame. A single screw controls the height of the bearing block and thus the clamping pressure exerted by the positioning and clamping cone on the floppy disk, which pressure may thereby be precisely and quickly adjusted. The invention is especially advantageous in half-height, direct drive floppy memory apparatus in which height and spindle torque limitations impose substantial design, fabrication and servicing constraints.The invention also provides for easy yet precise adjustment of the timing of the output pulse of a photosensor used to detect a sector index hole in the floppy disk.

摘要翻译： 软盘驱动器包含悬臂，其臂部在其自由端承载软盘定位和夹紧锥，所述臂沿着盘驱动器底座的后缘可枢转地安装。 通过驱动器的前面板上的控制杆旋转的纵向控制轴包括与臂的中心区域中的凸轮表面接触的凸轮。 控制轴的后端位于安装在基架上的可变高度轴承座中。 单个螺丝控制轴承座的高度，从而将定位和夹紧锥体施加的夹紧压力控制在软盘上，从而可以精确和快速地调节该压力。 本发明在半高度的直接驱动软盘存储装置中是特别有利的，其中高度和主轴转矩限制强加了实质的设计，制造和维修限制。 本发明还提供了用于检测用于检测软盘中的扇区索引孔的光电传感器的输出脉冲的定时的容易而精确的调整。