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    Spindle motor including hydrodynamic bearing and storage disk drive including same
    1.
    发明授权
    Spindle motor including hydrodynamic bearing and storage disk drive including same 有权
    主轴电动机包括流体动力轴承和包括其的存储盘驱动器

    公开(公告)号：US08520335B2

    公开(公告)日：2013-08-27

    申请号：US13198797

    申请日：2011-08-05

    申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Takehito Tamaoka ,  Takashi Yamamoto ,  Kazunori Usui ,  Akira Mukai

    发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Takehito Tamaoka ,  Takashi Yamamoto ,  Kazunori Usui ,  Akira Mukai

    IPC分类号： G11B17/02 ,  H02K5/16

    CPC分类号： F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/1677

    摘要： In a motor, a stationary portion includes a shaft portion and an upper thrust portion arranged to define a single continuous monolithic member together with the shaft portion, and arranged to extend radially outward from an upper portion of the shaft portion. The shaft portion includes a female screw portion recessed axially downward from an upper end thereof. An upper end of the single continuous monolithic member defined by the shaft portion and the upper thrust portion includes an upper end annular surface arranged to extend radially outward from the female screw portion perpendicularly or substantially perpendicularly to the central axis. An outside diameter of the upper end annular surface is greater than a diameter of an outer circumferential surface of the shaft portion.

    摘要翻译： 在电动机中，固定部分包括轴部分和上推力部分，所述上部推力部分布置成与所述轴部分一起限定单个连续的整体部件，并且被布置成从所述轴部分的上部径向向外延伸。 轴部包括从其上端轴向向下凹陷的阴螺纹部。 由所述轴部分和所述上推力部分限定的所述单个连续整体构件的上端包括上端环形表面，所述上端环形表面布置成垂直地或基本垂直于所述中心轴线从所述内螺纹部分径向向外延伸。 上端环状面的外径大于轴部的外周面的直径。

    Spindle motor with fluid dynamic bearing and storage disk drive
    2.
    发明授权
    Spindle motor with fluid dynamic bearing and storage disk drive 有权
    主轴电机带流体动力轴承和存储磁盘驱动器

    公开(公告)号：US08810096B2

    公开(公告)日：2014-08-19

    申请号：US13198784

    申请日：2011-08-05

    申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    IPC分类号： H02K5/167 ,  H02K7/08 ,  G11B19/20 ,  G11B33/14

    CPC分类号： H02K7/085 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  G11B33/1473

    摘要： A spindle motor includes a stationary portion and a rotating portion. The stationary portion preferably includes a shaft portion, a lower plate portion, and an outer tubular portion. The rotating portion preferably includes an inner tubular portion and a flange portion including a communicating hole. An upper seal portion is arranged radially outward of a first gap, and a lower seal portion is arranged radially outward of a second gap. The upper and lower seal portions are arranged in communication with each other through the communicating hole. The communicating hole and a space extending from the upper seal portion to the lower seal portion through the first gap, the second gap, and a third gap are filled with a lubricating oil. The third gap includes a dynamic pressure generation portion arranged to produce a radially inward pressure acting on the lubricating oil.

    摘要翻译： 主轴电动机包括固定部分和旋转部分。 固定部优选地包括轴部，下板部和外筒部。 旋转部分优选地包括内管状部分和包括连通孔的凸缘部分。 上密封部分布置在第一间隙的径向外侧，并且下密封部分布置在第二间隙的径向外侧。 上密封部分和下密封部分通过连通孔彼此连通。 连通孔和通过第一间隙，第二间隙和第三间隙从上密封部分延伸到下密封部分的空间填充有润滑油。 第三间隙包括设置成产生作用在润滑油上的径向向内的压力的动压产生部分。

    Spindle motor having dynamic pressure fluid bearing for use in a storage disk drive
    3.
    发明授权
    Spindle motor having dynamic pressure fluid bearing for use in a storage disk drive 有权
    具有用于存储盘驱动器的动压流体轴承的主轴马达

    公开(公告)号：US08379345B2

    公开(公告)日：2013-02-19

    申请号：US13198793

    申请日：2011-08-05

    申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    IPC分类号： G11B17/08

    CPC分类号： H02K7/085 ,  F16C17/107

    摘要： A spindle motor includes a stationary portion and a rotating portion. The stationary portion preferably includes a shaft portion, an upper thrust portion, and an outer tubular portion. The rotating portion preferably includes an inner tubular portion, a flange portion, an upper hub annular portion, and a lower hub annular portion. The flange portion includes a communicating hole. An upper surface of a lubricating oil is located in a fifth gap defined between an upper thrust portion and an upper hub annular portion, while a lower surface of the lubricating oil is located in a sixth gap defined between an outer tubular portion and a lower hub annular portion. The communicating hole and a space extending from the fifth gap to the sixth gap through a fourth gap, a first gap, a second gap, and a third gap are continuously filled with the lubricating oil.

    摘要翻译： 主轴电动机包括固定部分和旋转部分。 固定部分优选地包括轴部分，上推力部分和外管状部分。 旋转部分优选包括内部管状部分，凸缘部分，上部轮毂环形部分和下部轮毂环形部分。 凸缘部包括连通孔。 润滑油的上表面位于限定在上推力部分和上轮毂环部分之间的第五间隙中，而润滑油的下表面位于限定在外管状部分和下轮毂之间的第六间隙中 环形部分。 连通孔和通过第四间隙，第一间隙，第二间隙和第三间隙从第五间隙延伸到第六间隙的空间连续地填充有润滑油。

    Spindle motor with fluid dynamic bearing and storage disk drive
    4.
    发明授权
    Spindle motor with fluid dynamic bearing and storage disk drive 有权
    主轴电机带流体动力轴承和存储磁盘驱动器

    公开(公告)号：US08810095B2

    公开(公告)日：2014-08-19

    申请号：US13198776

    申请日：2011-08-05

    申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    IPC分类号： H02K5/167 ,  F16C17/10 ,  H02K7/08 ,  G11B33/14 ,  G11B19/20

    CPC分类号： H02K7/085 ,  F16C17/105 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  G11B33/1473

    摘要： A dynamic pressure bearing is defined in a first gap between a shaft portion and a sleeve portion. An upper seal portion extending upward and a lower seal portion extending downward are arranged radially outward of the dynamic pressure bearing. Each of the upper seal portion and the lower seal portion includes a surface including a lubricating oil located therein. The upper seal portion and the lower seal portion are arranged in communication with each other through a communicating hole defined in the sleeve portion. The communicating hole and a space ranging from the upper seal portion to the lower seal portion through the first gap are filled with the lubricating oil. The axial distance between the surfaces of the lubricating oil in the upper seal portion and the lower seal portion is arranged to be shorter than the axial distance between an upper end and a lower end of the dynamic pressure bearing.

    摘要翻译： 在轴部和套筒部之间的第一间隙中限定动态压力轴承。 向上延伸的上密封部分和向下延伸的下密封部分布置在动压轴承的径向外侧。 上密封部分和下密封部分中的每一个包括其中包括润滑油的表面。 上密封部分和下密封部分通过限定在套筒部分中的连通孔彼此连通。 连通孔和通过第一间隙从上密封部到下密封部的空间填充有润滑油。 上密封部中的润滑油的表面与下部密封部之间的轴向距离比动压轴承的上端和下端的轴向距离短。

    Spindle motor with fluid dynamic bearing and storage disk drive
    5.
    发明授权
    Spindle motor with fluid dynamic bearing and storage disk drive 有权
    主轴电机带流体动力轴承和存储磁盘驱动器

    公开(公告)号：US08823230B2

    公开(公告)日：2014-09-02

    申请号：US13198787

    申请日：2011-08-05

    申请人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    发明人： Junya Mizukami ,  Takayuki Oe ,  Yoichi Sekii ,  Naoki Sabashi ,  Hideki Nishimura ,  Takehito Tamaoka ,  Takashi Yamamoto

    IPC分类号： H02K5/167 ,  G11B33/14 ,  G11B25/04 ,  H02K7/08

    CPC分类号： H02K7/085 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B25/043 ,  G11B33/1473

    摘要： A motor includes a stationary portion and a rotating portion. The rotating portion includes a sleeve portion. The sleeve portion includes a communicating hole. A dynamic pressure bearing is defined in a first gap between a shaft portion and the sleeve portion. An upper seal portion and a lower seal portion are arranged radially outward of the dynamic pressure bearing. The upper seal portion and the lower seal portion are arranged in communication with each other through the communicating hole. The communicating hole and a space extending from the upper seal portion to the lower seal portion through the first gap are filled with a lubricating oil. A fixing region where an outer tubular portion and a base portion are fixed to each other is arranged to overlap with the dynamic pressure bearing in a radial direction in plan view.

    摘要翻译： 电动机包括固定部分和旋转部分。 旋转部分包括套筒部分。 套筒部分包括连通孔。 在轴部和套筒部之间的第一间隙中限定动态压力轴承。 上密封部分和下密封部分布置在动压轴承的径向外侧。 上密封部分和下密封部分通过连通孔彼此连通。 连通孔和通过第一间隙从上密封部分延伸到下密封部分的空间填充有润滑油。 在外观管状部和基部彼此固定的固定区域在俯视图中与动压轴承重合。

    Motor and disk drive apparatus
    7.
    发明授权
    Motor and disk drive apparatus 有权
    电机和磁盘驱动装置

    公开(公告)号：US08514515B2

    公开(公告)日：2013-08-20

    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： 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。

    Motor including hydrodynamic bearing and disk drive apparatus including same
    8.
    发明授权
    Motor including hydrodynamic bearing and disk drive apparatus including same 有权
    包括流体动力轴承和包括其的磁盘驱动装置的电动机

    公开(公告)号：US08508883B2

    公开(公告)日：2013-08-13

    申请号：US13613106

    申请日：2012-09-13

    申请人： Takehito Tamaoka ,  Shuji Iwasaki ,  Yoichi Sekii ,  Hideki Nishimura

    发明人： Takehito Tamaoka ,  Shuji Iwasaki ,  Yoichi Sekii ,  Hideki Nishimura

    IPC分类号： G11B17/02 ,  H02K7/08

    CPC分类号： G11B19/2009 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  H02K5/1677

    摘要： A motor includes a shaft portion, an upper plate cylindrical portion, a lower plate cylindrical portion, and a sleeve portion disposed between an upper plate portion and a lower plate portion. The sleeve portion includes an inner sleeve cylindrical portion and an outer sleeve cylindrical portion. An upper seal portion is arranged between the outer circumferential surface of the upper plate cylindrical portion and the inner circumferential surface of the outer sleeve cylindrical portion. A lower seal portion is arranged between the outer circumferential surface of the outer sleeve cylindrical portion and the inner circumferential surface of the lower plate cylindrical portion. At least a portion of the upper seal portion and at least a portion of the lower seal portion radially overlap with a radial gap between the outer circumferential surface of the shaft portion and the inner circumferential surface of the inner sleeve cylindrical portion.

    摘要翻译： 电动机包括轴部，上板圆筒部，下板圆筒部和设置在上板部和下板部之间的套筒部。 套筒部分包括内套筒部分和外套筒部分。 在上板圆筒部的外周面与外套筒筒部的内周面之间配置有上密封部。 在外筒筒部的外周面与下板圆筒部的内周面之间配置有下密封部。 上密封部分的至少一部分和下密封部分的至少一部分径向地与轴部的外圆周表面和内套筒圆筒部分的内圆周表面之间的径向间隙重叠。

    Bearing apparatus, spindle motor, and disk drive apparatus
    9.
    发明授权
    Bearing apparatus, spindle motor, and disk drive apparatus 有权
    轴承装置，主轴电机和磁盘驱动装置

    公开(公告)号：US08794839B2

    公开(公告)日：2014-08-05

    申请号：US13602348

    申请日：2012-09-04

    申请人： Akihiro Kimura ,  Teiichi Hirono ,  Kunio Sakurada ,  Kyoko Horise ,  Takehito Tamaoka ,  Kazuhiro Sato ,  Yoichi Sekii

    发明人： Akihiro Kimura ,  Teiichi Hirono ,  Kunio Sakurada ,  Kyoko Horise ,  Takehito Tamaoka ,  Kazuhiro Sato ,  Yoichi Sekii

    IPC分类号： F16C32/06

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

    摘要： A bearing apparatus includes a stationary shaft, a first annular member, and a rotating member. The rotating member includes a first inner circumferential surface arranged opposite to the outer circumferential surface of the stationary shaft, and a second inner circumferential surface arranged opposite to an outer circumferential surface of the first annular member. A lubricating oil is arranged in a gap between a surface of a stationary member and the rotating member. On an upper side of an upper surface of the lubricating oil, the first annular member and the rotating member are arranged radially opposite to each other with a slight gap defined therebetween, so that a labyrinth seal is defined. The labyrinth seal and a fixing range over which the stationary shaft and the first annular member are fixed to each other are arranged to overlap with each other in a radial direction.

    摘要翻译： 轴承装置包括固定轴，第一环形构件和旋转构件。 旋转构件包括与固定轴的外周面相对配置的第一内周面和与第一环状构件的外周面相对设置的第二内周面。 润滑油布置在固定件的表面和旋转件之间的间隙中。 在润滑油的上表面的上侧，第一环形构件和旋转构件彼此径向相对设置，在其间限定了微小的间隙，从而限定了迷宫式密封。 迷宫式密封件和固定轴和第一环形构件彼此固定的固定范围被布置成在径向方向上彼此重叠。