公开(公告)号：US20110299193A1

公开(公告)日：2011-12-08

申请号：US13197820

申请日：2011-08-04

申请人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU ,  Yasutaka INO ,  Tatsuyoshi NAKATANI

发明人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU ,  Yasutaka INO ,  Tatsuyoshi NAKATANI

IPC分类号： F16C32/06 ,  H02K7/08 ,  G11B17/02

CPC分类号： G11B19/2036 ,  F16C17/105 ,  F16C17/107 ,  F16C33/107 ,  F16C2370/12 ,  G11B17/0287

摘要： A fluid dynamic bearing mechanism includes a stationary shaft, a sleeve portion arranged to rotate with respect to the shaft, and a thrust portion including an upper end surface arranged oppose to a lower end surface of the sleeve portion. An inside surface of the thrust portion includes an inside surface contact portion arranged in contact with an outside surface of the shaft, and an inside surface lower non-contact portion spaced away from the outside surface of the shaft, and arranged to extend downward from a lower end of the inside surface contact portion. An outside surface of the thrust portion includes an outside surface inclined portion arranged in contact with an interface of a lubricating oil. The lower end of the inside surface contact portion is arranged at a level axially higher than that of a lower end of the outside surface inclined portion.

摘要翻译： 流体动力轴承机构包括固定轴，布置成相对于轴旋转的套筒部分和包括与套筒部分的下端表面相对布置的上端表面的推力部分。 推力部的内表面包括与轴的外表面接触的内表面接触部和与轴的外表面间隔开的内表面下非接触部，并且从内侧面向下延伸 内表面接触部分的下端。 推力部的外表面包括与润滑油的界面接触配置的外表面倾斜部。 内表面接触部分的下端设置在比外表面倾斜部分的下端更高的轴向上。

公开(公告)号：US20100195250A1

公开(公告)日：2010-08-05

申请号：US12765122

申请日：2010-04-22

申请人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU

发明人： Yoichi SEKII ,  Hironao SASAKI ,  Takuro IGUCHI ,  Hironori ANDO ,  Toshihiro AKIYAMA ,  Takunori SHINAO ,  Yuichi SHIGEMATSU

IPC分类号： G11B5/60 ,  F16C32/06

CPC分类号： F16C17/107 ,  F16C17/105 ,  F16C33/107 ,  F16C33/745 ,  F16C43/02 ,  F16C2370/12 ,  G11B17/0287

摘要： A bearing mechanism includes a shaft, a sleeve portion, a thrust portion, and a cover portion. Lubricating oil is arranged in a communicating channel in the sleeve portion, a thrust gap between the sleeve portion and the thrust portion, and a tapered gap between an outside surface of the thrust portion and the cover portion. A lower end opening of the communicating channel is defined in an outer circumferential portion of a lower surface of the sleeve portion radially outward of the thrust gap. A radially outermost portion of the thrust portion is arranged either tangent to a wall surface of the communicating channel or closer to a central axis than the wall surface. The tapered gap is arranged closer to the central axis than a radially outermost point of the wall surface. The outer circumferential portion and the cover portion define a guide gap therebetween.

摘要翻译： 轴承机构包括轴，套筒部分，推力部分和盖部分。 润滑油布置在套筒部分的连通通道中，套筒部分和推力部分之间的推力间隙以及推力部分的外表面与盖部分之间的锥形间隙。 连通通道的下端开口被限定在径向向外推动间隙的套筒部分的下表面的外圆周部分中。 推力部分的径向最外部分布置成与连通通道的壁表面相切或者比壁表面更靠近中心轴线。 锥形间隙布置成比壁表面的径向最外侧更靠近中心轴线。 外周部和盖部在其间限定引导间隙。

公开(公告)号：US20130083427A1

公开(公告)日：2013-04-04

申请号：US13613108

申请日：2012-09-13

申请人： Shuji IWASAKI ,  Yoichi SEKII ,  Takehito TAMAOKA ,  Hideki NISHIMURA ,  Kazuto MIYAJIMA ,  Takuro IGUCHI ,  Kazuhiro SATO ,  Takeyuki SHUTO

发明人： Shuji IWASAKI ,  Yoichi SEKII ,  Takehito TAMAOKA ,  Hideki NISHIMURA ,  Kazuto MIYAJIMA ,  Takuro IGUCHI ,  Kazuhiro SATO ,  Takeyuki SHUTO

IPC分类号： H02K7/08 ,  G11B17/02

CPC分类号： G11B19/2009 ,  H02K5/1677

摘要： A motor includes a shaft component, an upper plate portion, a lower plate portion, and a sleeve portion. The shaft component includes an inner shaft portion and an outer shaft portion. The upper plate portion defines a single monolithic member with one of the inner shaft portion and the outer shaft portion. The lower plate portion defines a single monolithic member with the other of the inner shaft portion and the outer shaft portion. The sleeve portion is disposed between the upper plate portion and the lower plate portion. A radial gap is defined between the sleeve portion and the outer shaft portion. A fixing range in which the outer shaft portion and the inner shaft portion radially overlap is arranged. At least a portion in an axial direction of the fixing range radially overlaps with an existing range in the axial direction of the radial gap.

摘要翻译： 电动机包括轴部件，上板部分，下板部分和套筒部分。 轴部件包括内轴部分和外轴部分。 上板部分限定了具有内轴部分和外轴部分中的一个的单个整体部件。 下板部分与内轴部分和外轴部分中的另一个部分形成单个整体部件。 套筒部分设置在上板部分和下板部分之间。 径向间隙限定在套筒部分和外轴部分之间。 布置外轴部和内轴部径向重叠的固定范围。 固定范围的轴向的至少一部分与径向间隙的轴向的现有范围径向重叠。

公开(公告)号：US20120063030A1

公开(公告)日：2012-03-15

申请号：US13299542

申请日：2011-11-18

申请人： Hiroki YAMADA ,  Junya MIZUKAMI ,  Tsuyosi MORITA ,  Tetsuya MARUYAMA ,  Takuro IGUCHI

发明人： Hiroki YAMADA ,  Junya MIZUKAMI ,  Tsuyosi MORITA ,  Tetsuya MARUYAMA ,  Takuro IGUCHI

IPC分类号： F16C32/06 ,  H02K7/08 ,  G11B17/02

CPC分类号： H02K5/1677 ,  F16C17/107 ,  F16C33/103 ,  F16C33/107 ,  F16C33/1085 ,  F16C33/74 ,  F16C2370/12 ,  G11B19/2036

摘要： In a fluid dynamic bearing apparatus, an oil buffer is defined between a thrust gap and a pumping gap. The oil buffer has an axial dimension greater than that of the thrust gap, and/or has a radial dimension greater than that of the pumping gap. An air bubble generated in the thrust gap due to cavitation, for example, when a fluid dynamic bearing apparatus experiences a vibration can be dissolved in lubricating oil provided within the oil buffer. This prevents leakage of the lubricating oil due to the air bubble residing in the fluid dynamic bearing apparatus.

摘要翻译： 在流体动力轴承装置中，在推力间隙和泵送间隙之间限定油缓冲器。 油缓冲器的轴向尺寸大于推力间隙的轴向尺寸，和/或具有大于泵送间隙的径向尺寸的径向尺寸。 例如当流体动力轴承装置发生振动时，在推力间隙产生的推力间隙中产生的气泡可以溶解在设置在油缓冲器内的润滑油中。 这样可以防止润滑油由于存在于流体动力轴承装置中的气泡而泄漏。

公开(公告)号：US20120250488A1

公开(公告)日：2012-10-04

申请号：US13492956

申请日：2012-06-11

申请人： Takuro IGUCHI ,  Yoshihiro SAMESHIMA ,  Takehito TAMAOKA ,  Ryouji SUGIURA

发明人： Takuro IGUCHI ,  Yoshihiro SAMESHIMA ,  Takehito TAMAOKA ,  Ryouji SUGIURA

IPC分类号： G11B19/20

CPC分类号： G11B19/2045 ,  G11B17/0282

摘要： A rotor hub includes a shaft connecting portion arranged to be connected to a shaft serving as a central axis, a disk loading portion centered about the central axis and arranged to support a disk shaped storage medium mounted thereon, a yoke arranged below the disk loading portion and supporting a field magnet at one of an inner side surface thereof and an outer side surface thereof, and a flexible portion connecting the disk loading portion to the yoke and being flexible with respect to a force applied thereto from the yoke.

摘要翻译： 转子轮毂包括：轴连接部分，其被布置成连接到用作中心轴线的轴;盘装载部分，围绕中心轴线居中并且被布置成支撑安装在其上的盘形存储介质;轭架，其布置在盘装载部分下方 并且在其内侧表面和外侧表面中的一个支撑场磁体;以及柔性部分，其将盘装载部分连接到轭，并且相对于从轭提供的力而是柔性的。

公开(公告)号：US20110019303A1

公开(公告)日：2011-01-27

申请号：US12899658

申请日：2010-10-07

申请人： Hiroki YAMADA ,  Junya MIZUKAMI ,  Tsuyoshi MORITA ,  Tetsuya MARUYAMA ,  Takuro IGUCHI

发明人： Hiroki YAMADA ,  Junya MIZUKAMI ,  Tsuyoshi MORITA ,  Tetsuya MARUYAMA ,  Takuro IGUCHI

IPC分类号： G11B5/02 ,  F16C32/06 ,  H02K5/167

CPC分类号： H02K5/1677 ,  F16C17/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K7/086

摘要： In a spindle motor, a capillary seal portion having a radial dimension that decreases in an axially downward direction, and a labyrinth seal portion arranged above the capillary seal portion are defined between an outer circumferential surface of a rotating member and an inner circumferential surface of a tubular portion. The capillary seal portion includes a liquid surface of a lubricating oil positioned therewithin. The radial dimension of the labyrinth seal portion is smaller than the radial dimension of an upper end portion of the capillary seal portion, so that the labyrinth seal portion contributes to reducing evaporation of the lubricating oil.

摘要翻译： 在主轴电动机中，在旋转部件的外周面和旋转部件的内周面之间形成有沿轴向向下方向减小的径向尺寸的毛细管密封部和布置在毛细管密封部的上方的迷宫式密封部， 管状部分。 毛细管密封部分包括位于其中的润滑油的液面。 迷宫式密封部的径向尺寸小于毛细管密封部的上端部的径向尺寸，因此迷宫式密封部有助于减少润滑油的蒸发。