US 12,190,921 B2
Disk device and head stack assembly having damper on inclined surface of load beam
Ryusuke Kimura, Yokohama Kanagawa (JP); Yusuke Nojima, Yokohama Kanagawa (JP); and Yasutaka Sasaki, Tokyo (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 Aug. 9, 2023, as Appl. No. 18/446,944.
Claims priority of application No. 2023-000020 (JP), filed on Jan. 4, 2023.
Prior Publication US 2024/0221781 A1, Jul. 4, 2024
Int. Cl. G11B 5/48 (2006.01); G11B 33/08 (2006.01)
CPC G11B 5/4833 (2013.01) [G11B 33/08 (2013.01); G11B 5/483 (2015.09)] 9 Claims
OG exemplary drawing
 
1. A disk device comprising:
11 or more magnetic disks;
an arm with a through hole configured to rotate around a rotation axis, and having:
a first surface spaced from the rotation axis in a first direction orthogonal to the rotation axis, to face one magnetic disk among the 11 or more magnetic disks, and
a second surface being opposite the first surface, the through hole being open to the first surface and the second surface;
a base plate having:
a third surface facing the first surface, and
a first protrusion protruding from the third surface to fit in the through hole;
a load beam attached to the base plate and having:
a fourth surface facing the one magnetic disk, and
a fifth surface being opposite the fourth surface and inclined with respect to the first surface so as to be closer to the one magnetic disk as is further away from the arm; and
a damper attached to the fifth surface, wherein
a value obtained by dividing a first distance between the first surface and the second surface by a second distance between an end of the damper and an axis of the through hole is 0.11 or less, the end of the damper being in a second direction opposite to the first direction.