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公开(公告)号：US10476329B2
公开(公告)日：2019-11-12
申请号：US15641392
申请日：2017-07-05
Applicant: Nidec Corporation
Inventor： Junya Mizukami , Yoichi Sekii , Takeyuki Shuto , Naohiro Nagasawa
Abstract: This motor includes a stationary portion including a stator; and a rotating portion supported to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, and including a shaft arranged to extend along the central axis. The stationary portion includes a bearing arranged to rotatably support the shaft, and a base portion arranged to hold the stator. The rotating portion includes a rotor hub portion arranged to extend in an annular shape around the shaft; a magnet directly or indirectly fixed to the rotor hub portion, and arranged opposite to the stator; a flywheel arranged axially above the rotor hub portion; and a seal portion arranged to have a thickness smaller than the thickness of the magnet. At least a portion of an outer circumferential surface of the rotor hub portion is a metal surface. The metal surface has a reflectivity higher than the reflectivity of an outer circumferential surface of the flywheel and the reflectivity of a surface of the seal portion. The metal surface is covered with the seal portion.
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公开(公告)号：US10218242B2
公开(公告)日：2019-02-26
申请号：US15171179
申请日：2016-06-02
Applicant: Nidec Corporation
Inventor： Yoichi Sekii
Abstract: A motor includes a rotating portion, a stationary portion, and a bearing arranged to support the rotating portion such that the rotating portion is rotatable with respect to the stationary portion. The rotating portion includes a shaft arranged to extend along a central axis, a magnet, a rotor hub arranged to extend in an annular shape around the shaft, and a flywheel fixed to the rotor hub. At least a portion of an outward surface of the rotor hub is a metal surface. The metal surface is arranged radially inward of an outer circumferential surface of the flywheel. A reflectance of the outer circumferential surface of the flywheel is lower than a reflectance of the metal surface.
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公开(公告)号：US10177625B2
公开(公告)日：2019-01-08
申请号：US15168351
申请日：2016-05-31
Applicant: Nidec Corporation
Inventor： Yoichi Sekii , Naohiro Nagasawa
Abstract: A motor includes a rotating portion. The rotating portion includes a shaft, a rotor hub, and a flywheel. The rotor hub is arranged to extend in an annular shape around the shaft. The flywheel is arranged axially above the rotor hub. The rotor hub includes a joining portion fixed to an outer circumferential surface of the shaft. A center of gravity of the rotating portion and the joining portion of the rotor hub are arranged to radially overlap with each other. The center of gravity of the rotating portion is arranged axially above a radial bearing portion and at a level equivalent to the level of the joining portion.
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公开(公告)号：US09194434B2
公开(公告)日：2015-11-24
申请号：US14459467
申请日：2014-08-14
Applicant: Nidec Corporation
Inventor： Masahiro Shiraishi , Tsuchitsugu Watanabe , Yoichi Sekii
CPC classification number: F16C33/72 , F16C17/107 , F16C33/726 , F16C33/74 , F16C33/741 , F16C33/743 , F16C33/745 , F16C2370/12 , G11B19/2036 , H02K7/08 , H02K7/085
Abstract: A spindle motor is configured to rotate a disk in a case defined by a base plate and a top cover arranged to cover an upper side of the base plate. The spindle motor includes a fluid dynamic bearing including a lubricant oil. A rotating portion body of the spindle motor includes an air hole. An upper opening of the air hole is in communication with an annular space between the top cover and the rotating portion body. A lower opening of the air hole is in communication with a gap between a stator and a magnet. Accordingly, even if a gas including the lubricant oil vaporized through a liquid surface of the lubricant oil leaks into the annular space, at least a portion of the gas including the lubricant oil flows into the air hole.
Abstract translation: 主轴电动机构造成在由基板和布置成覆盖基板的上侧的顶盖限定的壳体内旋转盘。 主轴电机包括含有润滑油的流体动力轴承。 主轴电动机的旋转部分主体包括气孔。 空气孔的上开口与顶盖和旋转部分主体之间的环形空间连通。 空气孔的下开口与定子和磁体之间的间隙连通。 因此，即使包含通过润滑油的液面蒸发的润滑油的气体泄漏到环状空间中，至少包含润滑油的气体的一部分流入气孔。
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公开(公告)号：US08873197B1
公开(公告)日：2014-10-28
申请号：US14444145
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: H02K1/27 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/745 , F16C2226/12 , F16C2226/40 , F16C2226/60 , F16C2370/12 , G11B19/2036 , H02K5/1677 , H02K7/086 , H02K2201/03
Abstract: A motor includes a rotating portion and a stationary portion. The stationary portion includes a shaft component which includes an inner shaft portion and an outer shaft portion, an upper plate portion, and a lower plate portion. The upper plate portion is disposed in one side of the shaft component and extends radially outward from the one side of the shaft component. The lower plate portion is disposed on the other side of the shaft component and extends radially outward from the other side of the shaft component. The rotating portion includes a sleeve portion. The inner shaft portion and the outer shaft portion are fixed by an adhesive. An adhesive retaining portion is provided between an outer peripheral portion of the inner shaft portion and an inner peripheral portion of the outer shaft portion.
Abstract translation: 马达包括旋转部分和固定部分。 固定部包括轴部件，其包括内轴部分和外部轴部分，上部板部分和下部板部分。 上板部分设置在轴部件的一侧，并从轴部件的一侧径向向外延伸。 下板部分设置在轴部件的另一侧，并从轴部件的另一侧径向向外延伸。 旋转部分包括套筒部分。 内轴部和外轴部由粘合剂固定。 在内轴部的外周部和外轴部的内周部之间设置有粘接保持部。
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Patent Agency Ranking
公开(公告)号：US08824097B2
公开(公告)日：2014-09-02
申请号：US14208003
申请日：2014-03-13
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: H02K1/27 , F16C17/107 , F16C33/103 , F16C33/107 , F16C33/745 , F16C2226/12 , F16C2226/40 , F16C2226/60 , F16C2370/12 , G11B19/2036 , H02K5/1677 , H02K7/086 , H02K2201/03
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 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 provided. 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。 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。 提供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。
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7.发明授权Spindle motor including a fluid dynamic bearing and disk drive apparatus with same 有权主轴电动机包括流体动力轴承和具有该动力轴承的盘驱动装置公开(公告)号：US08670209B2
公开(公告)日：2014-03-11
申请号：US13767205
申请日：2013-02-14
Applicant: Nidec Corporation
Inventor： Yoichi Sekii , Shuji Iwasaki
CPC classification number: H02K5/165 , F16C17/107 , F16C33/745 , F16C2370/12 , G11B19/2009 , G11B19/2036 , H02K5/1677
Abstract: A stationary portion of a motor includes a shaft component, an upper plate portion, and a lower plate portion. A rotating portion includes a sleeve portion which is disposed between the upper plate portion and the lower plate portion. The shaft component includes an inner shaft upper portion, an inner shaft lower portion which is located in a lower side of the inner shaft upper portion, and an outer shaft portion. The outer shaft portion is located on an outer circumferential surface of the inner shaft upper portion and an outer circumferential surface of the inner shaft lower portion. The inner shaft upper portion and the upper plate portion are preferably defined by a single monolithic member, and the inner shaft lower portion and the lower plate portion are preferably defined by a single monolithic member.
Abstract translation: 电动机的固定部分包括轴部件，上板部分和下板部分。 旋转部分包括设置在上板部分和下板部分之间的套筒部分。 轴部件包括内轴上部，位于内轴上部下侧的内轴下部和外轴部。 外轴部位于内轴上部的外周面和内轴下部的外周面。 内轴上部和上板部分优选地由单个整体构件限定，并且内轴下部分和下部板部分优选地由单个整体构件限定。
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公开(公告)号：US11990812B2
公开(公告)日：2024-05-21
申请号：US17881603
申请日：2022-08-05
Applicant: NIDEC CORPORATION
Inventor： Yoichi Sekii
CPC classification number: H02K3/28 , H02K1/165 , H02K3/12 , H02K3/34 , H02K15/105
Abstract: A routing structure of a conductive wire includes: a body portion; a guide portion fixed to the body portion and including a protruding portion protruding to an outside of the body portion; a conductive wire hooked on the protruding portion of the guide portion; and a first insulating portion disposed between the body portion and the guide portion and insulating the body portion and the guide portion.
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公开(公告)号：US11725713B2
公开(公告)日：2023-08-15
申请号：US17542797
申请日：2021-12-06
Applicant: Nidec Corporation
Inventor： Yoichi Sekii
CPC classification number: F16H1/46 , F16H57/082 , F16H2001/2872 , F16H2001/2881
Abstract: A planetary gear mechanism includes a sun gear attached to the motor rotation shaft to rotate about the central axis extending vertically, a fixed internal gear radially outside the sun gear, planetary gears radially outside the sun gear and radially inside the fixed internal gear to mesh with the sun gear and the fixed internal gear, a movable internal gear above the fixed internal gear and radially outside the planetary gears to mesh with the planetary gears and to rotate about the central axis, and a carrier that holds upper and lower surfaces of the planetary gears.
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公开(公告)号：US10908413B2
公开(公告)日：2021-02-02
申请号：US15479521
申请日：2017-04-05
Applicant: Nidec Corporation
Inventor： Hideki Nishimura , Yoichi Sekii
Abstract: This rotary drive apparatus includes a stationary portion including a stator; and a rotating portion supported through a bearing portion to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, the rotating portion including a magnet arranged opposite to the stator. The bearing portion includes an upper bearing portion, and a lower bearing portion arranged below the upper bearing portion. A center of gravity of the rotating portion is located below an upper end of the upper bearing portion and above a lower end of the lower bearing portion.
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