US 12,431,166 B2
Rotatable body mounting device and hard disk manufacturing method
Makoto Gonda, Kanagawa (JP)
Assigned to KOMURA-TECH CO., LTD., Osaka (JP)
Filed by KOMURA-TECH Co., Ltd., Osaka (JP)
Filed on Mar. 13, 2024, as Appl. No. 18/603,486.
Claims priority of application No. 2023-064685 (JP), filed on Apr. 12, 2023.
Prior Publication US 2024/0347074 A1, Oct. 17, 2024
Int. Cl. G11B 17/022 (2006.01); B23P 19/00 (2006.01); B23P 19/10 (2006.01)
CPC G11B 17/022 (2013.01) [B23P 19/006 (2013.01); B23P 19/10 (2013.01); Y10T 29/49025 (2015.01)] 6 Claims
OG exemplary drawing
 
1. A rotatable body mounting device for mounting a rotatable body to a rotation shaft, the rotatable body mounting device comprising:
a holding unit that includes a holder having a holding surface directly facing a surface to be held of the rotatable body which is one side of the rotatable body, the holder being configured to hold the rotatable body to a holding surface-side;
an actuation mechanism for moving the holder in an axial direction, in a state where a mounting hole in the rotatable body held to the holding surface-side is positioned on an extension line of the rotation shaft; and
a movable shaft having a leading end which is configured to directly face an insertion-side end of the rotation shaft;
wherein:
the rotatable body is plate-shaped;
an axial center of the movable shaft is configured to be a same axial center as an axial center of the rotation shaft;
the holder includes an insertion part open to the holding surface-side to at least partly house an outer peripheral surface of the movable shaft movably in the axial direction, the insertion part being configured to allow for insertion of the rotation shaft;
the actuation mechanism is configured to allow for switching between: (i) a movable shaft-side mounting state in which at least the leading end of the movable shaft protrudes outward from the insertion part, and the rotatable body is held by the holder when a movable shaft portion protruding outward from the insertion part is in a first state of insertion into the mounting hole; and (ii) a rotation shaft-side mounting state in which the rotatable body is held by the holder when the rotation shaft is in a second state of insertion into the mounting hole, and a portion including the leading end of the movable shaft and the insertion-side end of the rotation shaft is housed in the insertion part;
the holding unit includes intake equipment configured to allow intake air on a side of a surface opposite to the surface to be held of the rotatable body to flow in a space between an inner peripheral surface of the insertion part and an outer peripheral surface of the rotation shaft or an outer peripheral surface of the movable shaft through a space between the mounting hole and the outer peripheral surface of the rotation shaft or the outer peripheral surface of the movable shaft during the movable shaft-side mounting state or during the rotation shaft-side mounting state, and exhaust equipment configured to discharge the intake air as exhaust air from a discharge port open to the holding surface-side toward the surface to be held of the rotatable body;
the intake equipment and the exhaust equipment are configured to cause the intake air and the exhaust air to hold the rotatable body to the holding surface-side such that movement of the surface to be held of the rotatable body is permitted in non-contact with the holding surface; and
the intake equipment is configured to make a Bernoulli effect appear by the intake air during the movable shaft-side mounting state or during the rotation shaft-side mounting state to move the rotatable body such that a center of the mounting hole is positioned on the axial center of the rotation shaft.