Back to results
US 6,643,251 B1Granted
Disc drive apparatus
AssigneeSony Corporation
InventorsHiroshi Ikuta, Kentaro Soeda, Mitsuhiro Ueno
Life of this patent
Estimating the term…
Abstract
A disc drive apparatus performing recording and/or reproduction on a disc-shaped recording medium in which the top plate of a body is in close proximity to the disc-shaped recording medium and the top plate is provided with air passages that extend in radial directions of the disc-shaped recording medium. This disc drive apparatus prevents floatation of the disc-shaped recording medium without causing cost increase.
Claims8
A disc drive apparatus for performing recording and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of a body is at the other side of and in close proximity to the disc-shaped recording medium, and
- wherein the top plate is provided with air passages formed therein that extend in radial directions from the disc-shaped recording medium, and
- wherein the top plate is formed with punch-out portions that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end positions corresponding to a peripheral portion of the disc-shaped recording medium;
- a sheet-like outer cover that entirely covers the punch-out portions and is fixed to a top surface of the top plate;
- a sheet-like inner cover that covers portions of the punch-out portions excluding inner end portions and outer end portions thereof and is fixed to an inside surface of the top plate;
- and
- portions of the punch-out portions that are covered with two covers form said air passages.
5 more elements
A disc drive apparatus for performing recording and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of a body is at the other side of and in close proximity to the disc-shaped recording medium, and
- wherein the top plate is provided with air passages formed therein that extend in radial directions from the disc-shaped recording medium;
- and
- wherein an inside surface of the top plate is formed with grooves that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end positions corresponding to a peripheral portion of the disc-shaped recording medium;
- a sheet-like cover that covers portions of the grooves excluding inner end portions and outer end portions thereof and is fixed to the inside surface of the top plate;
- and
- the grooves form said air passages.
5 more elements
A disc drive apparatus for performing recording and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of a body is at the other side of and in close proximity to the disc-shaped recording medium;
- and
- wherein the top plate is provided with air passages formed therein that extend in radial directions from the disc-shaped recording medium;
- and
- wherein a top surface of a generally doughnut-shaped groove forming member is formed with grooves that extend from an inside circumferential surface to an outside circumferential surface;
- the groove forming member is fixed to an inside surface of the top plate;
- and
- the grooves that are covered with the top plate from said air passages.
6 more elements
A disc drive apparatus for performing recording and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of a body is at the other side of and in close proximity to the disc-shaped recording medium;
- and
- wherein the top plate is provided with air passages formed therein that extend in radial directions from the disc-shaped recording medium;
- and
- wherein tube-shaped members that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end positions corresponding to a peripheral portion of the disc-shaped recording medium are fixed to an inside surface of the top plate;
- and
- inside spaces of the tube-shaped member form said air passages.
5 more elements
A disc drive apparatus for performing recording on and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of the body is at the other side of and in close proximity to the disc-shaped recording medium, said top plate is formed with punch-out portions that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end portions corresponding to a peripheral portion of the disc-shaped recording medium;
- said body further including a sheet-like outer cover that entirely covers the punch-out portions and is fixed to a top surface of the top plate and a sheet-like inner cover that covers portions of the punch-out portions excluding inner end portions and outer end portions thereof and is fixed to an inside surface of the top plate, and
- wherein the top plate is provided with air passages that extend in radial directions from the disc-shaped recording medium and portions of the punch-out portions that are covered with the two covers form said air passages.
1 more element
A disc drive apparatus for performing recording on and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of the body is at the other side of and in close proximity to the disc-shaped recording medium, an inside surface of the top plate is formed with grooves that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end portions corresponding to a peripheral portion of the disc-shaped recording medium, a sheet-like cover that covers portions of the grooves excluding inner end portions and outer end portions thereof and is fixed to the inside surface of the top plate, and
- wherein the top plate is provided with air passages that extend in radial directions from the disc-shaped recording medium and the grooves from said air passages.
A disc drive apparatus for performing recording on and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- a body for accommodating the drive means, in which a top plate of the body is at the outer side of and in close proximity to the disc-shaped recording medium, and wherein the top plate is provided with air passages that extend in radial directions from the disc-shaped recording medium;
- a top surface of a generally doughnut-shaped groove forming member is formed with grooves that extend from an inside circumferential surface to an outer circumferential surface,
- the groove forming member is fixed to an inside surface of the top plate;
- and
- the grooves that are covered with the top plate form said air passages.
3 more elements
A disc drive apparatus for performing recording on and/or reproduction from a disc-shaped recording medium, said disc drive apparatus comprising:
- drive means for rotating the disc-shaped recording medium, which is placed at one side of the disc-shaped recording medium,
- body for accommodating the drive means, in which a top plate of the body is at the other side of an in close proximity to the disc-shaped recording medium;
- and wherein the top plate is provided with air passages that extend in radial directions from the disc-shaped recording medium;
- and
- tube-shaped members that extend from inside end positions corresponding to a central portion of the disc-shaped recording medium to outside end positions corresponding to a peripheral portion of the disc-shaped recording medium are fixed to an inside surface of the top plate, and inside spaces of the tube-shaped members form said air passages.
2 more elements
Dependencies are inferred from the claim text.