Patent ID: 6633532
Filing Date: 2003-10-14
Classification: G11B

Abstract:
A tilt adjusting apparatus for a disk drive having a turntable for carrying a disk, a spindle motor for revolving said turntable, an optical pickup for reading signals recorded on the disk, and a drive plate for supporting said optical pickup, said tilt adjusting apparatus comprising:a skew plate which is fixed to or combined with said spindle motor; a supporter unit for supporting said skew plate over said drive plate in such a manner that said skew plate is tiltable around the central point of the signal-recorded area of the disk, the skew plate includes a pair of follower portions and the supporter unit includes a pair of cam portions respectively aligned with the follower portions, the supporter unit has a guide pin and the skew plate has a groove for receiving the guide pin to limit relative movement; a first adjuster unit for adjusting a tilt of the disk on said turntable in a first direction which is perpendicular to a tracking direction of said optical pickup, said first adjuster unit having an adjuster screw for applying force to said skew plate in a first direction; a second adjuster unit for adjusting a tilt of the disk in a second direction by applying a force to said skew plate in a direction parallel to an axis of revolution of the disk; and restraining means for restraining said skew plate from moving in a second direction which is parallel to the tracking direction of said optical pickup, wherein a longitudinal axis of the adjuster screw is aligned approximately parallel to surfaces of the respective supporter unit and skew plate.