Disk drive apparatus with disk rotating means

Details Disk drive apparatus with disk rotating means Disk drive apparatus with disk rotating means

1987-12-23

1989-08-08

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9905, G11B 17022

Patent

active

048558508

ABSTRACT:
An apparatus for rotating a magnetic disk supported by a disk hub on its central portion includes a spindle shaft rotated by a driving motor and inserted through a central hole of the disk, a rotating member fixed coaxially to the spindle shaft for corotation therewith, a drive pin arranged off-center on the rotating member and capable of being inserted through an off-center drive hole formed in the magnetic disk, a leaf spring member attached to the underside of the rotating member and including a first leaf spring portion having the drive pin implanted in one end thereof and a second leaf spring portion bent at a right angle from the other end of the first leaf spring portion, a rotational support shaft for rotatably supporting the leaf spring member, at the other end of the first leaf spring portion, on the rotating member about an axis perpendicular to the underside thereof, and a spring contact member fixed off-center to the underside of the rotating member. The second leaf spring portion contacts the spring contact member to apply an urging force for biasing the drive pin into resilient contact with a side edge of the drive hole. The first leaf spring portion applies an urging force for biasing the drive pin resiliently to insert the same into the drive hole.

REFERENCES:
patent: 4672486 (1987-06-01), Bettini
patent: 4697216 (1987-09-01), Tsukahara

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