公开(公告)号：US20180108377A1

公开(公告)日：2018-04-19

申请号：US15633843

申请日：2017-06-27

Applicant: Nidec Corporation

Inventor： Masahiro SHIRAISHI ,  Katsuya TAKAHASHI

IPC: G11B19/20 ,  H02K7/14 ,  H02K1/27 ,  H02K1/02

CPC classification number: G11B19/2045 ,  G11B19/2009 ,  H02K1/02 ,  H02K1/27 ,  H02K1/272 ,  H02K1/2786 ,  H02K1/30 ,  H02K7/14

Abstract: This motor is arranged to rotate an annular member, and includes a stationary portion including a stator, and a rotating portion arranged to be rotatable about a central axis extending in a vertical direction. The rotating portion includes a hub arranged to extend in an annular shape around the central axis; a magnet including a pole surface arranged radially opposite to the stator; and a yoke to which the magnet is fixed. The hub includes a hub annular portion in the shape of a circular ring and arranged above the stator, and a flange surface on which the annular member is arranged. The yoke includes a yoke increased thickness portion arranged radially outside of the magnet; and a yoke decreased thickness portion arranged to have a radial thickness smaller than that of the yoke increased thickness portion, and arranged axially above the yoke increased thickness portion. The yoke decreased thickness portion is fixed to the hub annular portion through press fitting.

公开(公告)号：US20170047097A1

公开(公告)日：2017-02-16

申请号：US15229221

申请日：2016-08-05

Applicant: Nidec Corporation

Inventor： Mitsuo KODAMA ,  Hiroyuki ABE ,  Katsuya TAKAHASHI ,  Yuya SAITO ,  Masahiro SHIRAISHI ,  Yoshinobu ARAO

IPC: G11B33/02 ,  G11B33/14

CPC classification number: G11B33/148 ,  G11B25/043

Abstract: A case of a disk drive apparatus includes a housing in which a disk is accommodated, and a top cover arranged to close an opening of the housing. The top cover includes a top cover body and a flow control member. The top cover body is a plate-shaped member arranged to extend perpendicularly to a central axis. The flow control member is fixed to a lower surface of the top cover body. The flow control member includes a lower surface arranged axially opposite to at least a portion of an upper surface of the disk.

Abstract translation: 磁盘驱动装置的壳体包括容纳盘的壳体和用于封闭壳体的开口的顶盖。 顶盖包括顶盖主体和流动控制构件。 顶盖主体是布置为垂直于中心轴延伸的板状构件。 流量控制构件固定在顶盖主体的下表面。 流动控制构件包括与盘的上表面的至少一部分轴向相对布置的下表面。

公开(公告)号：US20140211342A1

公开(公告)日：2014-07-31

申请号：US13798857

申请日：2013-03-13

Applicant: NIDEC CORPORATION

Inventor： Kazuhiro SATO ,  Masahiro SHIRAISHI

IPC: H02K7/08 ,  G11B19/20

CPC classification number: H02K7/086 ,  F16C17/107 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2009 ,  G11B19/2036 ,  H02K5/1677

Abstract: A lubricating oil is arranged between stationary and rotating portions of a spindle motor. When the motor is stationary, upper and lower surfaces of the lubricating oil are respectively located in upper and lower capillary seal portions. A first angle defined between an outer circumferential surface of the plate portion and an inner circumferential surface of a cylindrical portion at the upper capillary seal portion, and a second angle defined between an outer circumferential surface of a sleeve and an inner circumferential surface of the wall portion at the lower capillary seal portion, in a section taken along a plane including a central axis is respectively in the range of about 1 degree to about 8 degrees and in the range of about 1 degree to about 10 degrees, respectively. The upper capillary seal portion has maximum radial and axial dimensions smaller than those of the lower capillary seal portion.

Abstract translation: 润滑油布置在主轴电动机的静止和旋转部分之间。 当电动机静止时，润滑油的上表面和下表面分别位于上毛细密封部分和下毛细密封部分中。 限定在所述板部的外周面与所述上部毛细管密封部的圆筒部的内周面之间的第一角度以及在所述套筒的外周面与所述壁的内周面之间限定的第二角度 在沿着包括中心轴的平面截取的截面中，毛细管密封部下部的部分分别分别在约1度至约8度的范围内，并且分别在约1度至约10度的范围内。 上部毛细管密封部分的最大径向和轴向尺寸小于下部毛细管密封部分的尺寸。

公开(公告)号：US20140153132A1

公开(公告)日：2014-06-05

申请号：US14169511

申请日：2014-01-31

Applicant: Nidec Corporation

Inventor： Kazuhiro SATO ,  Masahiro SHIRAISHI ,  Takayuki ISHINO ,  Akihiro YUDATE ,  Takuro MATSUMOTO ,  Toshihiro AKIYAMA

IPC: H02K5/22 ,  G11B19/20

CPC classification number: H02K5/225 ,  G11B19/2009 ,  H02K3/50 ,  H02K2203/06 ,  H02K2211/03

Abstract: A base member of a motor includes a base through-hole extending through a bottom portion thereof. Two or more lead wires extending from coils pass through the base through-hole. Thus, as compared with a case where the lead wires pass through different base through-holes respectively, it is possible to reduce the number of the base through-holes. Accordingly, it is possible to minimize or prevent a reduction in the rigidity of the base member. Insulating sheet portions are arranged on the lower and upper surfaces of the base member. Each insulating sheet portion includes an overhang portion which overlaps with the base through-hole when seen in a plan view. The lead wires extending from the coils are led out toward the lower surface of the base member through holes, cutouts, or slits defined in the overhang portion. This makes it possible to easily distinguish the led-out lead wires from each other.

Abstract translation: 马达的基座部件包括延伸穿过其底部的基底通孔。 从线圈延伸的两根或多根导线穿过基座通孔。 因此，与引线分别穿过不同的基底通孔的情况相比，可以减少基底通孔的数量。 因此，可以最小化或防止基体的刚性降低。 绝缘片部分布置在基底构件的下表面和上表面上。 每个绝缘片部分包括当在平面图中观察时与基部通孔重叠的突出部分。 从线圈延伸的引线通过限定在突出部分中的孔，切口或狭缝引导到基部构件的下表面。 这使得可以容易地将引出线彼此区分开。

公开(公告)号：US20130342934A1

公开(公告)日：2013-12-26

申请号：US13783733

申请日：2013-03-04

Applicant: NIDEC CORPORATION

Inventor： Masahiro SHIRAISHI ,  Kazuhiro SATO ,  Katsuya TAKAHASHI

IPC: H02K5/16 ,  G11B19/20

CPC classification number: H02K5/16 ,  G11B19/2009 ,  H02K1/187 ,  H02K3/522 ,  H02K5/04 ,  H02K5/1675 ,  H02K5/225 ,  H02K2211/03

Abstract: A spindle motor arranged to rotate a disk about a center axis extending in an up-down direction includes a rotary unit including a rotor magnet and a stationary unit including a stator opposed to the rotor magnet and a base plate. The base plate includes a flat plate-shaped member positioned around the center axis and made of a first kind of metallic material and a base body axially overlapping with the plate-shaped member and made of a second kind of metallic material. The first kind of metallic material is larger in Young's modulus than the second kind of metallic material. The base body includes a cylindrical or substantially cylindrical bearing attachment portion axially extending about the center axis and a bottom plate portion radially extending from a lower portion of the bearing attachment portion. The plate-shaped member is positioned below the bottom plate portion to contact the bottom plate portion.

Abstract translation: 布置成围绕围绕上下方向延伸的中心轴旋转圆盘的主轴电机包括旋转单元，其包括转子磁体和包括与转子磁体相对的定子和基板的固定单元。 基板包括围绕中心轴定位并由第一种金属材料制成的平板状构件和与板状构件轴向重叠并由第二种金属材料制成的基体。 第一种金属材料的杨氏模量比第二种金属材料大。 基体包括围绕中心轴线延伸的圆柱形或基本圆柱形的轴承附接部分和从轴承附接部分的下部径向延伸的底板部分。 板状构件位于底板部分下方以接触底板部分。

公开(公告)号：US20250038597A1

公开(公告)日：2025-01-30

申请号：US18779431

申请日：2024-07-22

Applicant: NIDEC CORPORATION

Inventor： Mitsuhiro TAKEMOTO ,  Masahiro SHIRAISHI

IPC: H02K1/2791 ,  H02K1/30 ,  H02K15/03 ,  H02K21/22

Abstract: A rotor rotatable about a central axis extending in an axial direction includes a yoke that is a cylindrical magnetic body extending in the axial direction. A plurality of ridge portions of the yoke are connected to one axial end of the yoke cylindrical portion in a cylindrical shape and extending in the axial direction, and are arranged at intervals in the circumferential direction. In each ridge portion, a protrusion protrudes radially inward from one axial end of the yoke cylindrical portion. Further, an extension extends in the other axial direction from the radially inner end of the protrusion along the radially inner surface of the yoke cylindrical portion. A magnet is located between the extensions adjacent to each other in the circumferential direction. The ridge portion is integral with the yoke cylindrical portion to define a single structure.

公开(公告)号：US20150138670A1

公开(公告)日：2015-05-21

申请号：US14607375

申请日：2015-01-28

Applicant: Nidec Corporation

Inventor： Kazuhiro SATO ,  Masahiro SHIRAISHI ,  Takayuki ISHINO ,  Akihiro YUDATE ,  Takuro MATSUMOTO ,  Toshihiro AKIYAMA

IPC: H02K3/38 ,  H02K3/28 ,  G11B19/20

CPC classification number: G11B19/2009 ,  H02K3/50 ,  H02K5/225 ,  H02K2203/06 ,  H02K2211/03

Abstract: A base member includes a base through-hole which interconnects an upper opening and a lower opening. An insulating sheet portion is disposed at a lower surface side of the base member. The insulating sheet portion covers at least a portion of the lower opening. Lead wires extending from coils extend to the lower surface side of the base member through the base through-hole. The lead wires extend radially outward along a lower surface of the insulating sheet portion while making contact with the insulating sheet portion. The lead wires are soldered to land portions of a circuit substrate. The lower opening is covered with a sealing material. The circuit substrate includes a first region. The insulating sheet portion is defined by a smaller number of layers than the first region.

Abstract translation: 基部构件包括将上部开口和下部开口相互连接的基部通孔。 绝缘片部分设置在基底构件的下表面侧。 绝缘片部分覆盖下开口的至少一部分。 从线圈延伸的引线通过基底通孔延伸到基底构件的下表面侧。 引线沿着绝缘片部分的下表面径向向外延伸，同时与绝缘片部分接触。 引线被焊接到电路基板的接地部分。 下部开口用密封材料覆盖。 电路基板包括第一区域。 绝缘片部分由比第一区域更少的层数限定。

公开(公告)号：US20140086036A1

公开(公告)日：2014-03-27

申请号：US13804855

申请日：2013-03-14

Applicant: NIDEC CORPORATION

Inventor： Masahiro SHIRAISHI ,  Kazuhiro SATO

IPC: G11B19/20

CPC classification number: G11B19/2045

Abstract: A spindle motor includes a stationary portion and a rotating portion including a rotor hub, and includes a recording disk and a clamper mounted thereon. The rotor hub includes a hub circular plate portion whose outer circumferential portion includes a hub slanting surface, and a hub cylindrical portion whose outer circumferential portion includes a hub screw portion. The hub screw portion, to which the clamper is screwed, includes at least a first hub screw groove, a first hub screw thread arranged to be adjacent to the first hub screw groove, and upper and lower flanks arranged to together define the first hub screw thread. The hub slanting surface connects with the first hub screw groove. The length of the hub slanting surface is longer than the length of the upper flank.

Abstract translation: 主轴电动机包括固定部分和包括转子毂的旋转部分，并且包括记录盘和安装在其上的夹持器。 转子毂包括：外圆周部分包括轮毂倾斜表面的轮毂圆板部分和外圆周部分包括毂螺旋部分的轮毂圆柱部分。 夹紧器被拧入的毂螺纹部分至少包括第一轮毂螺纹槽，布置成与第一轮毂螺纹槽相邻的第一轮毂螺纹螺纹，以及设置成一起限定第一轮毂螺钉的上下侧面 线。 轮毂倾斜表面与第一轮毂螺纹槽连接。 轮毂倾斜表面的长度大于上侧面的长度。

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 。