US 11,922,980 B1
Disk device with column attached to base and cover
Manabu Uehara, Kawasaki Kanagawa (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Toshiba Electronic Devices & Storage Corporation, Tokyo (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/119,263.
Claims priority of application No. 2022-151632 (JP), filed on Sep. 22, 2022.
Int. Cl. G11B 5/48 (2006.01); G11B 5/55 (2006.01); G11B 33/02 (2006.01)
CPC G11B 5/4826 (2013.01) [G11B 5/5521 (2013.01); G11B 33/022 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A disk device comprising:
a plurality of magnetic disks;
a casing including
a base having an inner space in which the plurality of magnetic disks is accommodated, and
a first cover attached to the base to close the space;
a column with a screw hole, located in the space and attached to the base by being fitted into a recess formed in the base;
a rotary component located in the space, surrounding the column, and configured to rotate about the column;
a screw fitted into the screw hole through the first cover; and
a cylinder with an inner through hole, wherein
the base includes a bottom surface facing the first cover, and a protrusion protruding from the bottom surface toward the first cover,
the protrusion is provided with the recess,
the cylinder accommodates the protrusion and the column in the through hole and is interposed between the column and the rotary component,
the protrusion has:
a first outer peripheral surface spaced apart from an inner surface of the through hole and facing the inner surface of the through hole; and
a second outer peripheral surface being closer to the bottom surface than the first outer peripheral surface, to hold the cylinder on the protrusion by contacting with the inner surface of the through hole,
the column includes a fitting part fitted into the recess, and
the second outer peripheral surface is spaced apart from the fitting part toward the bottom surface.