Back to results
US 12,646,532 B2Granted
Magnetic disk device having shroud and guide vane
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsTomohiko Jimbo, Biswas Debasish, Makoto Okamoto, Yasuhiko Kato
Life of this patent
Estimating the term…
Abstract
A magnetic disk device includes a disk rotatable in a rotation direction and a shroud that at least partially surrounds the disk along an outer edge of the disk with a gap from the outer edge of the disk. A guide vane is connected to the shroud at a downstream side of an airflow generated in the rotation direction. The guide vane has a structure that decelerates an airflow between the guide vane and the disk.
Claims7
A magnetic disk device comprising:
- a disk rotatable in a rotation direction;
- a shroud that at least partially surrounds the disk along an outer edge of the disk with a gap from the outer edge of the disk;
- and
- a guide vane connected to the shroud at a downstream side of a gas flow generated in the rotation direction, wherein
- the guide vane has a structure that decelerates the gas flow between the guide vane and the disk,
- the guide vane is formed along the outer edge of the disk, the guide vane is concave on a disk side and has no inflection point, and includes:
- a guide vane connection portion connected to the shroud;
- a guide vane distal end portion which is a portion at a distal end on a downstream side of the gas flow;
- and
- a guide vane central portion between the guide vane connection portion and the guide vane distal end portion, and
- a distance between the guide vane central portion and the disk is larger than a distance between the guide vane connection portion and the disk, and a distance between the guide vane distal end portion and the disk is larger than the distance between the guide vane central portion and the disk.
8 more elements
A magnetic disk device comprising:
- a disk rotatable in a rotation direction;
- a shroud that at least partially surrounds the disk along an outer edge of the disk with a gap from the outer edge of the disk;
- and
- a guide vane connected to the shroud at a downstream side of a gas flow generated in the rotation direction, wherein
- the guide vane has a structure that decelerates the gas flow between the guide vane and the disk,
- the guide vane includes:
- a guide vane connection portion connected to the shroud;
- a guide vane distal end portion which is a portion at a distal end on a downstream side of the gas flow;
- a guide vane central portion between the guide vane connection portion and the guide vane distal end portion;
- and
- a gas flow guide portion located on the further downstream side of the gas flow of the guide vane distal end portion,
- a distance between the guide vane central portion and the disk is larger than a distance between the guide vane connection portion and the disk, and a distance between the guide vane distal end portion and the disk is larger than the distance between the guide vane central portion and the disk, and
- a distance between the gas flow guide portion and the disk is smaller than the distance between the guide vane distal end portion and the disk.
10 more elements
Dependencies are inferred from the claim text.