Rotating disk storage device with actuator lock mechanism
AssigneeHitachi Global Storage Technologies Netherlands B.V.
InventorsShingo Tsuda, Matsuro Ohta, Kazutaka Okasaka
Life of this patent
Estimating the term…
Abstract
Embodiments of the invention permit a magnet-based actuator lock mechanism to operate smoothly in a magnetic disk drive that uses a base made of a magnetic material. In one embodiment, the base to be used is made of a magnetic material. The actuator lock mechanism includes a rotatable arm that retains a magnet. A magnetic attraction force, which is oriented toward the base as indicated by an arrow, is generated in the magnet. The base is provided with a cut to reduce the attraction force. The cut is covered with a sealing material to maintain internal airtightness. The actuator lock mechanism may be, for instance, an eddy-current latch, inertia latch, or magnetic latch.
Claims12
A rotating disk storage device comprising:
- a base containing a magnetic section;
- a cover coupled to said base;
- a rotating disk recording medium mounted on said base in a rotatable manner;
- an actuator assembly to position a head over said rotating disk recording medium;
- and
- an actuator lock mechanism containing a movable member to retain a magnet;
- wherein an area demarcated by an orthogonal projection of said magnet onto said magnetic section of said base is provided with an aperture for decreasing the magnetic attraction force between the base and the magnet;
- wherein the area demarcated by the orthogonal projection covers the whole track of the magnet that moves in accordance with the motion of the movable member.
Dependencies are inferred from the claim text.