公开(公告)号：CA1227568A

公开(公告)日：1987-09-29

申请号：CA481214

申请日：1985-05-09

Applicant: IBM

Inventor： JANSSEN DONOVAN M ,  KIRTON ALAN J ,  MURPHY ROBERT M ,  ROSE LEROY

IPC: G11B17/041 ,  G11B5/54 ,  G11B17/028 ,  G11B17/04 ,  G11B17/043 ,  G11B17/03 ,  G11B23/50

Abstract: TORSIONAL ACTUATOR FOR LOADING AND UNLOADING FLEXIBLE DISK DRIVE A torsional actuator is disclosed for loading and unloading a flexible disk drive. The actuator includes a torsion beam having a biasing arm and a plurality of actuating arms extending therefrom with the free ends of the actuating arms being separately engageable with different ones of the collet, pressure pad and recording head arm of the flexible disk drive. The arms of the actuator are configured to enable selective and sequential movement of the collet, pressure pad and/or recording head arm in one direction toward a disk within the drive to establish a loaded, or operational) position and in the opposite direction away from a disk within the drive to establish an unloaded, or disk accessing, position with such positioning being determined by a force applying cam engageable with the actuator.

公开(公告)号：CA1225741A

公开(公告)日：1987-08-18

申请号：CA481213

申请日：1985-05-09

Applicant: IBM

Inventor： JANSSEN DONOVAN M ,  KIRTON ALAN J ,  MURPHY ROBERT M ,  ROSE LEROY

IPC: G11B17/028 ,  G11B17/03

Abstract: TWO STAGE COLLETING IN A FLEXIBLE DISK DRIVE Two stage colleting is disclosed for a flexible disk drive. Precise registration of a floppy disk within a disk cartridge with respect to the spindle and recording head of a disk drive is achieved by first positioning the cartridge with respect to the collet, and then aligning the collet with respect to the spindle axis as the collet is moved toward the spindle. This two stage colleting is made possible by use of a collet shaft having two different diameters with the larger diameter being adjacent to the collet during positioning of the cartridge with respect to the collet and with the smaller diameter being adjacent to the collet to allow movement of the collet in a direction normal to the spindle axis during alignment of the collet with respect to the spindle axis.

公开(公告)号：CA1229409A

公开(公告)日：1987-11-17

申请号：CA481212

申请日：1985-05-09

Applicant: IBM

Inventor： FRIEHAUF WILLIAM J ,  JANSSEN DONOVAN M ,  KIRTON ALAN J ,  ROSE LEROY ,  MURPHY ROBERT M

IPC: G11B33/12 ,  G11B17/028 ,  G11B21/02 ,  G11B25/04 ,  G11B33/02 ,  G11B17/03

Abstract: FLEXIBLE DISK DRIVE OPTIMIZED FOR AUTOMATED MANUFACTURE A flexible disk drive is disclosed that is optimized for automated manufacture. The critical elements of the disk drive are divided into two functional groups, one of which includes the elements for loading and unloading the disk cartridge and the other of which includes the elements for reading and writing on the flexible disk within the cartridge, with the elements of each group being precisely registered with respect to one another on separate frame members. The frame members are coarsely registered with respect to one another and snapped together, after separate assembly of at least most of the elements on the separate frame members has been completed, and fine position registration of the flexible disk to the spindle is thereafter achieved during each loading operation of a flexible disk into the assembly disk drive by collet centering and clamping the disk to the spindle. By this arrangement, automated methods of manufacture can be effectively carried out for assembly of each frame member as well as final assembly of the frame members.