公开(公告)号：US20080078084A1

公开(公告)日：2008-04-03

申请号：US11860577

申请日：2007-09-25

Applicant: Yoichi SEKII ,  Hiroshi OGAWA

Inventor： Yoichi SEKII ,  Hiroshi OGAWA

IPC: B21K1/00 ,  G11B17/00 ,  H02K21/12

CPC classification number: G11B19/2036 ,  Y10T29/49639

Abstract: One or more of constructional members of a hydrodynamic bearing assembly are nickel-plated, and the members to be welded and fixed are arranged to abut on one another. The nickel plating is performed so as to form a plated layer of less than 10 μm in thickness between the members to be welded and fixed. An energy beam is applied at the joining portion of the members to be welded and fixed, to weld and fix these members.

Abstract translation: 流体动力轴承组件的一个或多个结构构件是镀镍的，待焊接和固定的构件被布置成彼此邻接。 进行镀镍，以在要焊接和固定的构件之间形成厚度小于10微米的镀层。 在被焊接和固定的构件的接合部分处施加能量束，以焊接和固定这些构件。

公开(公告)号：US20130083427A1

公开(公告)日：2013-04-04

申请号：US13613108

申请日：2012-09-13

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

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

IPC: H02K7/08 ,  G11B17/02

CPC classification number: G11B19/2009 ,  H02K5/1677

Abstract: 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.

Abstract translation: 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：US20120326543A1

公开(公告)日：2012-12-27

申请号：US13602348

申请日：2012-09-04

Applicant: Akihiro KIMURA ,  Teiichi HIRONO ,  Kunio SAKURADA ,  Kyoko HORISE ,  Takehito TAMAOKA ,  Kazuhiro SATO ,  Yoichi SEKII

Inventor： Akihiro KIMURA ,  Teiichi HIRONO ,  Kunio SAKURADA ,  Kyoko HORISE ,  Takehito TAMAOKA ,  Kazuhiro SATO ,  Yoichi SEKII

IPC: F16C33/74 ,  H02K7/08

CPC classification number: F16C17/107 ,  F16C33/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1677

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20090165284A1

公开(公告)日：2009-07-02

申请号：US12337767

申请日：2008-12-18

Applicant: Masato GOMYO ,  Yoichi SEKII ,  Hirokazu SHIRAI

Inventor： Masato GOMYO ,  Yoichi SEKII ,  Hirokazu SHIRAI

IPC: G11B33/00 ,  G11B17/02

CPC classification number: G11B33/12 ,  Y10T29/49025

Abstract: A method for manufacturing a bearing mechanism includes the steps of: (a) setting a position of an annular member relative to a center axis; (b) moving the annular member toward an opening of a sleeve housing through a shaft by pressing and elastically deforming a bottom portion of the sleeve housing; (c) releasing the pressing to restore the bottom portion to its original shape; and (d) fixing the annular member to the sleeve housing. Herein, the step (b) is performed by arranging the annular member within the sleeve housing, making one end portion of the shaft received in the annular member contact an inner bottom surface of the sleeve housing or with a thrust member disposed thereon, and making the annular member contact the shaft in a direction leading from the opening to the bottom portion of the sleeve housing.

Abstract translation: 一种用于制造轴承机构的方法包括以下步骤：（a）设定环形构件相对于中心轴线的位置; （b）通过使所述套筒壳体的底部部分压缩并弹性变形，使所述环形构件朝向轴套壳体的开口移动; （c）释放按压以将底部部​​分恢复到原来的形状; 和（d）将环形构件固定到套筒壳体。 这里，步骤（b）通过将环形构件布置在套筒壳体内，使得容纳在环形构件中的轴的一个端部接触套筒壳体的内底面或设置在其上的推力构件，并且 环形构件沿着从套筒壳体的开口到底部的方向接触轴。

公开(公告)号：US20090161253A1

公开(公告)日：2009-06-25

申请号：US12333346

申请日：2008-12-12

Applicant: Hirokazu SHIRAI ,  Yoichi SEKII ,  Masato GOMYO

Inventor： Hirokazu SHIRAI ,  Yoichi SEKII ,  Masato GOMYO

IPC: G11B17/02 ,  F16C32/06 ,  H02K5/16

CPC classification number: F16C17/10 ,  F16C33/107 ,  F16C35/02 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

Abstract: A bearing mechanism includes a cylindrical bottom-closed sleeve unit; a shaft unit radially supported by the sleeve unit via a lubricant; and an elastic thrust plate on an inner bottom surface of the sleeve unit to contact an end portion of the shaft unit at a position on a central axis to rotatably support the shaft unit. The shaft unit has a first contact portion, and the sleeve unit has a second contact portion. The contact portions are so arranged that, when a force acting from above the inner bottom surface is applied, movement of the shaft unit is restrained by the contact portions making contact with each other. Further, a distance between the contact portions prior to the force being applied is smaller than the displacement of the shaft unit at which the thrust plate gets so pressed by the shaft unit to be permanently deformed.

Abstract translation: 轴承机构包括圆柱形底部闭合套筒单元; 通过润滑剂由套筒单元径向支撑的轴单元; 以及在所述套筒单元的内底表面上的弹性止推板，以在所述轴单元的端部在中心轴线上的位置接触以可旋转地支撑所述轴单元。 轴单元具有第一接触部分，并且套筒单元具有第二接触部分。 接触部分布置成使得当从内底表面上方施加的力被施加时，轴单元的运动被彼此接触的接触部分约束。 此外，施加力之前的接触部分之间的距离小于推动板被轴单元压迫以永久变形的轴单元的位移。

公开(公告)号：US20110122530A1

公开(公告)日：2011-05-26

申请号：US12952319

申请日：2010-11-23

Applicant: Yoichi SEKII ,  Atsushi YAWATA

Inventor： Yoichi SEKII ,  Atsushi YAWATA

IPC: G11B17/02 ,  H02K11/00 ,  H02K3/38

CPC classification number: H02K5/225 ,  H02K3/50 ,  H02K11/33 ,  H02K2211/03

Abstract: A stator portion of a spindle motor includes a substantially cup-shaped base member including a bottom portion expanding in a radial direction, and a wall portion extending upwards from an outer edge portion of the bottom portion. A circuit board is fixed to a lower surface of the base member in a position on the outer side in the radial direction and on the upper side than the bottom portion. Accordingly, the thickness of the spindle motor in the axial direction can be reduced. The base member has a through hole formed axially through the bottom portion. An opening edge portion of the base member is covered with the insulating layer. A conducting wire from a coil is drawn through the through hole, led out along the surface of the insulating layer, and connected to the circuit board positioned on the outer side in the radial direction than the bottom portion. Accordingly, the conducting wire can be led to the circuit board while the electric connection between the conducting wire and the opening edge portion can be prevented.

Abstract translation: 主轴电动机的定子部分包括基本上杯形的基部构件，其包括沿径向膨胀的底部部分和从底部部分的外边缘部分向上延伸的壁部分。 电路基板固定在基体的下表面的径向外侧的位置以及比底部的上侧。 因此，可以减小主轴电机在轴向上的厚度。 基部件具有轴向穿过底部形成的通孔。 基部构件的开口边缘部分被绝缘层覆盖。 来自线圈的导线沿着绝缘层的表面被引导通过通孔，并且连接到位于比底部在径向外侧的电路板。 因此，可以防止导线与开口边缘部之间的电连接而导电线被引导到电路板。

公开(公告)号：US20120033329A1

公开(公告)日：2012-02-09

申请号：US13198794

申请日：2011-08-05

Applicant: Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Takehito TAMAOKA ,  Takashi YAMAMOTO ,  Shigeki HORIKI ,  Kazushi MIURA ,  Mitsuhiro TAKEMOTO

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

IPC: G11B17/028 ,  H02K7/08

CPC classification number: G11B25/043 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/1675

Abstract: In a motor, an annular radially extending gap is defined between an outer annular surface and a lower surface of an annular cover portion. The radially extending gap has an axial width smaller than a maximum width of an upper seal portion defined between an outer circumferential surface of an upper thrust portion and an inner circumferential surface of a tubular portion. An annular axially extending gap is defined between an inner cylindrical surface and a radially inner edge of the annular cover portion. The axially extending gap has a radial width smaller than the maximum width of the upper seal portion.

Abstract translation: 在电动机中，环形径向延伸的间隙限定在环形盖部分的外环形表面和下表面之间。 径向延伸间隙的轴向宽度小于限定在上推力部分的外圆周表面和管状部分的内圆周表面之间的上密封部分的最大宽度。 环形轴向延伸的间隙限定在环形盖部分的内圆柱表面和径向内边缘之间。 轴向延伸间隙的径向宽度小于上密封部分的最大宽度。

公开(公告)号：US20120033327A1

公开(公告)日：2012-02-09

申请号：US13198787

申请日：2011-08-05

Applicant: Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Hideki NISHIMURA ,  Takehito TAMAOKA ,  Takashi YAMAMOTO

Inventor： Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Hideki NISHIMURA ,  Takehito TAMAOKA ,  Takashi YAMAMOTO

IPC: H02K7/08 ,  G11B17/02

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120033326A1

公开(公告)日：2012-02-09

申请号：US13198784

申请日：2011-08-05

Applicant: Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Hideki NISHIMURA ,  Takehito TAMAOKA ,  Takashi YAMAMOTO

Inventor： Junya MIZUKAMI ,  Takayuki OE ,  Yoichi SEKII ,  Naoki SABASHI ,  Hideki NISHIMURA ,  Takehito TAMAOKA ,  Takashi YAMAMOTO

IPC: H02K7/08 ,  G11B17/02

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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20120092788A1

公开(公告)日：2012-04-19

申请号：US13034778

申请日：2011-02-25

Applicant: Atsushi YAWATA ,  Yoichi SEKII ,  Junya MIZUKAMI ,  Tetsuya MARUYAMA ,  Hirofumi KOJIMA

Inventor： Atsushi YAWATA ,  Yoichi SEKII ,  Junya MIZUKAMI ,  Tetsuya MARUYAMA ,  Hirofumi KOJIMA

IPC: F16C32/06 ,  G11B5/02 ,  G11B19/00

CPC classification number: H02K5/1675 ,  F16C17/045 ,  F16C17/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K7/085

Abstract: A fluid dynamic bearing mechanism includes a stationary bearing portion including a sleeve portion, and a rotating bearing portion including an outer rotating portion. A lubricating oil is arranged between the stationary and rotating bearing portions. A first dynamic pressure groove array is arranged in an upper surface of the sleeve portion or a lower surface of the outer rotating portion. A second dynamic pressure groove array is arranged in a surface of the outer rotating portion or a surface of the stationary bearing portion in a region between the first array and a liquid surface. An end of the second array closer to the liquid surface is arranged radially inward of an opposite end of the second array. An upper end opening of a communicating channel defined in the sleeve portion is arranged radially outward of a radially inner end of the first array.

Abstract translation: 流体动力轴承机构包括具有套筒部分的固定轴承部分和包括外部旋转部分的旋转轴承部分。 润滑油布置在固定轴承部分和旋转轴承部分之间。 第一动压槽阵列布置在套筒部分的上表面或外旋转部分的下表面中。 第二动压槽阵列布置在第一阵列和液体表面之间的区域中的外旋转部分的表面或固定轴承部分的表面中。 更靠近液面的第二阵列的端部布置在第二阵列的相对端的径向内侧。 限定在套筒部分中的连通通道的上端开口布置在第一阵列的径向内端的径向外侧。