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。

公开(公告)号：US20130120868A1

公开(公告)日：2013-05-16

申请号：US13739415

申请日：2013-01-11

Applicant: Nidec Corporation

Inventor： Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Takehito TAMAOKA ,  Takashi YAMAMOTO ,  Shigeki HORIKI ,  Kazushi MIURA ,  Mitsuhiro TAKEMOTO ,  Hironori ANDO ,  Katsuya TAKAHASHI

IPC: H02K7/08 ,  G11B15/00

CPC classification number: H02K7/08 ,  F16C17/107 ,  F16C33/745 ,  F16C2226/40 ,  F16C2370/12 ,  G11B15/00 ,  G11B19/2036 ,  G11B25/043 ,  H02K5/1675

Abstract: A motor includes a seal cap and a tubular portion. The seal cap includes a first seal cap lower surface which is an annular surface facing axially downward, and a second seal cap lower surface which is an annular surface facing axially downward and arranged radially outward of the first seal cap lower surface. The tubular portion includes a first tubular portion upper surface which is an annular surface arranged axially opposite to the first seal cap lower surface, and a second tubular portion upper surface which is an annular surface arranged radially outward of the first tubular portion upper surface and in contact with the second seal cap lower surface. The first tubular portion upper surface includes an oil-repellent film region covered with an oil-repellent film. A substantially annular radially extending gap is defined between the first tubular portion upper surface and the first seal cap lower surface.

Abstract translation: 马达包括密封盖和管状部分。 密封盖包括第一密封盖下表面，其是面向轴向向下的环形表面，以及第二密封帽下表面，第二密封帽下表面是面向轴向向下并且布置在第一密封盖下表面的径向外侧的环形表面。 管状部分包括第一管状部分上表面，该第一管状部分上表面是与第一密封帽下表面轴向相对布置的环形表面，以及第二管状部分上表面，其是设置在第一管状部分上表面的径向外侧的环形表面， 与第二密封盖下表面接触。 第一管状部分上表面包括被拒油膜覆盖的拒油膜区域。 在第一管状部分上表面和第一密封帽下表面之间限定基本环形的径向延伸的间隙。

公开(公告)号：US20130094342A1

公开(公告)日：2013-04-18

申请号：US13705608

申请日：2012-12-05

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Hirokazu SHIRAI ,  Junya MIZUKAMI ,  Kazuyoshi SAITO ,  Hideki NISHIMURA ,  Atsushi YAWATA

IPC: G11B19/20 ,  H02K5/24

CPC classification number: G11B19/2027 ,  G11B19/2009 ,  H02K5/24 ,  H02K7/085 ,  H02K7/09

Abstract: A spindle motor includes a stationary portion and a rotating portion. The rotating portion includes a magnet arranged around a central axis extending in a vertical direction. The stationary portion includes a base member and a magnetic member arranged below the magnet and fixed to the base member. The base member includes an upper surface extending out perpendicularly or substantially perpendicularly to the central axis, and a wall surface extending in an axial direction. The magnetic member includes an annular plate portion arranged on the base member and a projecting portion arranged to extend downward from the plate portion. At least a portion of the projecting portion is arranged to be in contact with the wall surface. An adhesive is arranged between the plate portion and the upper surface of the base member and between the projecting portion and the wall surface.

Abstract translation: 主轴电动机包括固定部分和旋转部分。 旋转部包括围绕在垂直方向延伸的中心轴线布置的磁体。 固定部包括基部构件和布置在磁体下方并固定到基座构件的磁性构件。 基部构件包括垂直于或基本上垂直于中心轴线延伸的上表面和沿轴向方向延伸的壁表面。 磁性构件包括布置在基底构件上的环形板部分和布置成从板部向下延伸的突出部分。 突出部分的至少一部分被布置成与壁表面接触。 粘合剂布置在板部分和基部构件的上表面之间以及突出部分和壁表面之间。