公开(公告)号：US20140082927A1

公开(公告)日：2014-03-27

申请号：US13804792

申请日：2013-03-14

Applicant: NIDEC CORPORATION

Inventor： Masahiro SHIRAISHI ,  Kazuhiro SATO ,  Tsuyoshi MORITA

IPC: H02K15/02 ,  G11B19/20

CPC classification number: H02K15/02 ,  G11B19/2009 ,  Y10T29/49012

Abstract: A disk drive apparatus includes a rotor hub including an outer surface with a hub screw groove and a hub information mark indicative of a start position of the hub screw groove. A method of manufacturing the disk drive apparatus includes the steps of preparing a spindle motor including the rotor hub, preparing a clamper including a clamper screw groove, and fitting a recording disk to the spindle motor. The method further includes the steps of detecting a position of the hub information mark and, based on the detected position of the hub information mark, positioning each of the clamper and the spindle motor in a circumferential direction, and screwing the clamper to the spindle motor.

Abstract translation: 磁盘驱动装置包括转子毂，该转子毂包括具有轮毂螺纹槽的外表面和表示轮毂螺纹槽的起始位置的轮毂信息标记。 一种制造磁盘驱动装置的方法包括以下步骤：制备包括转子毂的主轴电动机，制备包括夹持器螺纹槽的夹持器，以及将记录盘装配到主轴电动机。 该方法还包括以下步骤：检测集线器信息标记的位置，并且根据检测到的集线器信息标记的位置，沿周向对夹持器和主轴电动机进行定位，并将夹持器旋转到主轴电动机 。

公开(公告)号：US20130243356A1

公开(公告)日：2013-09-19

申请号：US13893535

申请日：2013-05-14

Applicant: Seagate Technology LLC ,  Nidec Corporation

Inventor： Hiroki YAMADA ,  Junya MIZUKAMI ,  Tsuyoshi MORITA ,  Tetsuya MARUYAMA ,  Takuro IGUCHI ,  Troy Michael HERNDON ,  Timothy Edward Langlais

IPC: F16C32/06

CPC classification number: F16C32/0659 ,  F16C17/107 ,  F16C33/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036

Abstract: A fluid dynamic bearing apparatus includes a first minute gap, a second minute gap, a third minute gap, a fourth minute gap, and a fifth minute gap. A flow of a lubricating oil from the fifth minute gap to the fourth minute gap is caused by a plurality of dynamic pressure generating grooves arranged within the fluid dynamic bearing apparatus. This flow causes air bubbles mixed in the lubricating oil within the fifth minute gap to flow toward the third minute gap and be discharged to an outside through the third minute gap. The fluid dynamic bearing apparatus further includes a plurality of dynamic pressure generating grooves and an all around groove.

Abstract translation: 流体动力轴承装置包括第一微小间隙，第二微小间隙，第三微小间隙，第四微小间隙和第五微小间隙。 润滑油从第五分钟间隙到第四微小间隙的流动由布置在流体动力轴承装置内的多个动压产生槽引起。 该流动使第五分钟间隙内的润滑油中混合的气泡朝向第三微小间隙流动，并通过第三微小间隙排出到外部。 流体动力轴承装置还包括多个动压产生槽和全周围槽。