Optical disk apparatus
AssigneeHitachi-LG Data Storage, Inc.
InventorsHideyuki Onuma, Seiji Hamaie, Sojiro Kirihara
Life of this patent
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Abstract
In an optical disk apparatus, a feed motor for moving an optical pickup in approximately the radial direction of a disk is provided on a base, such as unit mechanism mounting member, that pivotally moves about a supporting point together with the optical pickup and a disk motor, and on the base, the feed motor is disposed at an outer circumferential position of the optical disk or at a position near the supporting point, in the projection region of the optical disk in its chucked condition.
Claims7
An optical disk apparatus for writing or reading information by moving an optical pickup in approximately a radial direction of an optical disk, said apparatus comprising:
- a lead screw member having a feed screw on its surface in order to assign approximately radial moving force in a direction of said optical pickup by rotating;
- a disk motor for drivingly rotating the optical disk in a chucked condition thereof;
- a feed motor disposed at a position external to a midpoint position in a radial direction of the chucked optical disk, in a projection region of the optical disk, in order to drivingly rotate said lead screw member;
- a first base as a apparatus base;
- a second base on which said lead screw member, said feed motor, and said optical pickup are mounted, wherein said second base pivotally moves about a supporting point disposed more externally to the midpoint position in the radial direction of the chucked optical disk than to said first base;
- and
- a lifter provided on the side facing said first base, wherein, when the optical disk is chucked, the optical disk is loaded into a desired internal position of said apparatus and then said lifter moves said second base vertically about the supporting point by giving pivotal moving force to said second base.
An optical disk apparatus for writing or reading information by moving an optical pickup in approximately a radial direction of an optical disk, said apparatus comprising:
- a lead screw member having a feed screw on its surface in order to assign approximately radial moving force in a direction of said optical pickup by rotating;
- a feed motor for rotationally driving said lead screw member;
- a disk motor for drivingly rotate the optical disk in its chucked condition;
- a first base as a apparatus base;
- a second base on which said lead screw member, said feed motor, said optical pickup, and said disk motor are mounted, wherein said second base is adapted to pivotally move about a supporting point disposed more externally to a midpoint position in a radial direction of the chucked optical disk than to said first base, and wherein said feed motor is disposed closer to the supporting point than to the midpoint position in the radial direction of the optical disk, in a projection region thereof;
- and
- a lifter provided on the side facing said first base, wherein, when the optical disk is chucked, the optical disk is loaded into a desired internal position of said apparatus and then said lifter moves said second base vertically about the supporting point by giving pivotal moving force to said second base.
An optical disk apparatus that writes or reads information by rotating an optical disk in a concentrically chucked condition on a rotating shaft of a disk motor and moving an optical pickup in approximately a radial direction of the optical disk, said apparatus comprising:
- a convex-shaped damper disposed on a rotating section of said disk motor, wherein, when the optical disk is chucked, said damper is inserted into a central hole of the optical disk and supports the optical disk in a radial direction;
- a disk plane support section disposed concentrically with said clamper, on the rotating section of said disk motor, wherein, with said damper inserted within the central hole of the optical disk, said support section supports a planar section of the optical disk;
- a top cover disposed above said clamper, wherein said cover has a through-hole at a position opposed to said damper and covers the surface side of said apparatus;
- a bottom cover that covers the reverse side of said apparatus;
- a lead screw member having a feed screw on its surface in order to assign approximately radial moving force in a direction of said optical pickup by rotating;
- a feed motor disposed at a position external to a midpoint position in the radial direction of the chucked optical disk, in a projection region thereof, wherein said feed motor rotationally drives said lead screw member;
- a disk motor for rotationally driving the optical disk in its chucked condition;
- a first base as a apparatus base;
- a second base coupled with said bottom cover, wherein said lead screw member, said feed motor, said optical pickup, and said disk motor are mounted on said second base and wherein said second base pivotally moves about a supporting point disposed more externally to the midpoint position in the radial direction of the chucked optical disk than to said first base;
- and
- a lifter provided at the side facing said first base, wherein, when the optical disk is chucked, the optical disk is loaded into a desired internal position of said apparatus and then said lifter moves said second base vertically about the supporting point by giving pivotal moving force to said second base;
- wherein, during the chucking of the optical disk, said lifter moves said second base upward and then after the optical disk has been made to abut on an opposite face of said top cover, a front edge of said damper protrudes from the through-hole in said top cover and is thus positioned above the surface of a planar section in the disk projection region.
Dependencies are inferred from the claim text.