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公开(公告)号：US10566865B2
公开(公告)日：2020-02-18
申请号：US16192073
申请日：2018-11-15
Applicant: Nidec Corporation
Inventor： Takuo Miyake , Kazuhiro Sato , Katsuya Takahashi
Abstract: A protrusion includes a leading end to which a yoke is fixed and a connector that connects an axially lower end of a flange and the leading end. A minimum width of the connector in a direction intersecting a direction in which the protrusion protrudes is smaller than a maximum width of the leading end in a radial direction. A radial position at a radially inner end of the leading end is located radially outward with respect to a side surface in a radially inward direction of a magnet.
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公开(公告)号：US09837872B2
公开(公告)日：2017-12-05
申请号：US14587099
申请日：2014-12-31
Applicant: NIDEC CORPORATION
Inventor： Yoichi Sekii , Takehito Tamaoka , Kazuhiro Sato , Kazuhiko Fukushima , Hiroyuki Abe
CPC classification number: H02K5/22 , G11B25/043 , H02K1/146 , H02K3/44 , H02K3/522 , H02K5/00 , H02K5/225 , H02K2203/03 , H02K2213/03
Abstract: A motor includes a stationary unit and a rotary unit. The stationary unit includes a stator, a base portion having at least one hole extending in the up-down direction, and a flexible wiring substrate. The flexible wiring substrate reaches a position higher than a lower surface of the base portion through at least one hole and is arranged to supply electric power to the stator. The flexible wiring substrate includes a connection portion arranged higher than the lower surface of the base portion and connected to the stator. The connection portion includes a solder portion arranged on a lower surface thereof to cover a portion of a lead wire extending from a coil of the stator. At least a portion of the solder portion is positioned within the hole.
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公开(公告)号：US09064529B2
公开(公告)日：2015-06-23
申请号：US14458465
申请日：2014-08-13
Applicant: Nidec Corporation
Inventor： Katsuya Takahashi , Yuki Tajima , Kazuhiro Sato , Yuya Saito , Hironori Ando , Masahiro Shiraishi
IPC: G11B19/20 , G11B17/028 , G11B17/038
CPC classification number: G11B19/2009 , G11B17/0284 , G11B17/0287 , G11B17/038
Abstract: A spindle motor includes a recording disk and a clamper. A cylindrical portion includes a first screw portion positioned in an outer circumferential portion of the cylindrical portion. The clamper includes an annular raised portion configured to be fitted in a through hole of the recording disk. An inner circumferential portion of the clamper includes a second screw portion configured to be screwed to the first screw portion. At least a portion of the second screw portion is positioned in an inner circumferential portion of the annular raised portion. Each of the first screw portion and the second screw portion includes at least one of a screw groove and a screw thread. An axial position of at least a portion of the second screw portion overlaps with an axial position of the recording disk.
Abstract translation: 主轴电机包括记录盘和夹持器。 圆筒部包括位于圆筒部的外周部的第一螺纹部。 夹持器包括构造成装配在记录盘的通孔中的环形凸起部分。 夹持器的内圆周部分包括构造成螺纹连接到第一螺纹部分的第二螺纹部分。 所述第二螺纹部的至少一部分位于所述环状隆起部的内周部。 第一螺纹部分和第二螺纹部分中的每一个包括螺纹槽和螺纹中的至少一个。 第二螺纹部分的至少一部分的轴向位置与记录盘的轴向位置重叠。
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公开(公告)号：US08873198B1
公开(公告)日：2014-10-28
申请号：US14444146
申请日：2014-07-28
Applicant: Nidec Corporation
Inventor： Shuji Iwasaki , Yoichi Sekii , Takehito Tamaoka , Hideki Nishimura , Kazuto Miyajima , Takuro Iguchi , Kazuhiro Sato , Takeyuki Shuto
IPC: G11B17/02
CPC classification number: H02K5/165 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/745 , F16C2226/12 , F16C2226/40 , F16C2226/60 , F16C2370/12 , G11B19/2036 , H02K5/1677 , H02K7/086
Abstract: A motor includes a rotating portion including a sleeve portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion. A radial dynamic pressure generating groove array is provided on at least one surface of an inner circumferential surface of the sleeve portion and an outer circumferential surface of the outer shaft portion, which define the radial gap. The radial dynamic pressure generating groove array includes an upper radial dynamic pressure generating groove array and a lower radial dynamic pressure generating groove array. A range of a fixing region in an axial direction between the inner shaft portion and the outer shaft portion in an interference fit state is included in a range between the upper radial dynamic pressure generating groove array and the lower radial dynamic pressure generating groove array.
Abstract translation: 马达包括具有套筒部和固定部的旋转部。 固定部包括轴部，该轴部包括内轴部和外轴部。 径向动压产生槽阵列设置在套筒部分的内圆周表面的至少一个表面和限定径向间隙的外轴部分的外圆周表面上。 径向动压产生槽阵列包括上径向动压产生凹槽阵列和下径向动压产生凹槽阵列。 在上部径向动态压力产生槽阵列和下部径向动态压力产生槽阵列之间的范围内包括在干涉配合状态下在内轴部和外轴部之间沿轴向方向的固定区域的范围。
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5.发明授权Spindle motor with hydrodynamic bearing structure having capillary seal and disk drive apparatus including same 有权具有毛细管密封的流体动力轴承结构的主轴电动机和包括其的盘驱动装置公开(公告)号：US08773816B1
公开(公告)日：2014-07-08
申请号：US13798857
申请日：2013-03-13
Applicant: Nidec Corporation
Inventor： Kazuhiro Sato , Masahiro Shiraishi
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。
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Patent Agency Ranking
公开(公告)号：US08737018B2
公开(公告)日：2014-05-27
申请号：US13804855
申请日：2013-03-14
Applicant: Nidec Corporation
Inventor： Masahiro Shiraishi , Kazuhiro Sato
IPC: G11B17/02
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。 夹紧器被螺纹连接到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。
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公开(公告)号：US09502071B2
公开(公告)日：2016-11-22
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
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。
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公开(公告)号：US09083224B2
公开(公告)日：2015-07-14
申请号：US13804792
申请日：2013-03-14
Applicant: Nidec Corporation
Inventor： Masahiro Shiraishi , Kazuhiro Sato , Tsuyoshi Morita
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 。
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公开(公告)号：US11676638B2
公开(公告)日：2023-06-13
申请号：US17711039
申请日：2022-04-01
Applicant: NIDEC CORPORATION
Inventor： Kazuhiro Sato , Masahiro Imahori , Junya Mizukami , Shingo Suginobu , Tomoki Uchibori
CPC classification number: G11B25/043 , G11B19/2009 , G11B2220/2516
Abstract: A spindle motor includes a base, a shaft arranged on the base and extending in a vertical direction, a stator having a coil defined by a wound conductive wire and arranged on an upper surface of the base, and a rotor rotatably supported around the shaft. The base has a through hole that penetrates the base from the upper surface to a lower surface. The conductive wire is drawn out to the lower surface side through the inside of the through hole. The through hole is sealed by a sealing material. The through hole includes a columnar lower column body and a columnar upper column body. The lower column body is arranged on the lower surface side of the base. A cross-sectional area of the upper column body orthogonal to an axial direction is smaller than a cross-sectional area of the lower column body orthogonal to the axial direction.
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公开(公告)号：US10559998B2
公开(公告)日：2020-02-11
申请号：US15783103
申请日：2017-10-13
Applicant: NIDEC CORPORATION
Inventor： Yoichi Sekii , Takehito Tamaoka , Kazuhiro Sato , Kazuhiko Fukushima , Hiroyuki Abe
Abstract: A motor includes a stationary unit and a rotary unit. The stationary unit includes a stator, a base portion having at least one hole extending in the up-down direction, and a flexible wiring substrate. The flexible wiring substrate reaches a position higher than a lower surface of the base portion through at least one hole and is arranged to supply electric power to the stator. The flexible wiring substrate includes a connection portion arranged higher than the lower surface of the base portion and connected to the stator. The connection portion includes a solder portion arranged on a lower surface thereof to cover a portion of a lead wire extending from a coil of the stator. At least a portion of the solder portion is positioned within the hole.
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