Microfloppy disk drive with centering mechanism

Details Microfloppy disk drive with centering mechanism Microfloppy disk drive with centering mechanism

1986-07-17

1991-01-29

Severin, David J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, 369271, G11B 17022

Patent

active

049891073

ABSTRACT:
A disk drive apparatus is provided with a center positioning pin engageable with a center positioning aperture of a magnetic disk, and a drive pin establishing positioning and driving engagement with a driving and positioning opening formed in the disk. The drive pin is supported by a resilient member which is resiliently deformable and is pivotable retative to a turntable. The resilient member is preferably so arranged to cause pivotal movement of the drive pin to have substantially greater radial motion component in comparison with peripheral motion component, or to permit inclination of the drive pin relative to a vertical axis at least in a direction different from the direction of rotation of the turntable by the resilience. With this arrangement, the disk drive apparatus is capable of exerting higher rotational torque with an accuracy in centering of a magnetic disk to be driven and can minimize shifting of chucking point so as not to cause offset of indexes recorded in the disk. Furthermore, the disk drive apparatus can reduce a shock in chucking and whereby minimize or eliminate wear and/or deformation of a drive opening and a drive pin.

REFERENCES:
patent: 4445155 (1984-04-01), Takahashi et al.
patent: 4445157 (1984-04-01), Takahashi
patent: 4613921 (1986-09-01), Holmes
patent: 4654725 (1987-03-01), Wakaizami
patent: 4667257 (1987-05-01), Chan
patent: 4697216 (1987-09-01), Tsukahara
patent: 4700245 (1987-10-01), Sakaguchi
patent: 4825314 (1989-04-01), Maekawa et al.

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