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公开(公告)号：US20220278589A1
公开(公告)日：2022-09-01
申请号：US17679416
申请日：2022-02-24
Applicant: Nidec Corporation
Inventor： Yu TACHIBANA , Tomohiro HASEGAWA , Yoichi SEKII , Masahiro OTANI , Hiroaki HIRANO
Abstract: A motor includes a shaft centered on a central axis that extends vertically, a bearing that supports the shaft, and a stator including a coil radially opposing an outer peripheral surface of the shaft. The shaft includes a magnetization pattern in which at least two or more poles of N and S poles are alternately arranged in a circumferential direction.
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公开(公告)号：US20190004311A1
公开(公告)日：2019-01-03
申请号：US15946739
申请日：2018-04-06
Applicant: Nidec Corporation
Inventor： Takeyuki SHUTO , Yoichi SEKII
Abstract: This casing unit includes a housing unit and a casing arranged to house therein at least a portion of the housing unit, the housing unit including a housing arranged to house therein at least a portion of a rotary drive apparatus arranged to cause incoming light coming from a light source to be emitted to an outside of the rotary drive apparatus while changing the direction of the incoming light. The housing includes a first tubular portion being tubular, and arranged to extend along a central axis extending in a vertical direction; and a second tubular portion being tubular, and arranged to extend along the central axis below the first tubular portion. The first tubular portion is arranged to house therein at least a portion of the light source. The second tubular portion is arranged to house therein at least a portion of the rotary drive apparatus. A cavity radially inside of the housing includes a light path along which the incoming light travels. The housing further includes, at each of the first and second tubular portions, one or more housing positioning portions each of which is arranged to be in contact with the casing in at least one of an axial direction, a radial direction, and a circumferential direction. The housing is defined by a single monolithic member including the housing positioning portions.
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公开(公告)号：US20180048208A1
公开(公告)日：2018-02-15
申请号：US15783103
申请日：2017-10-13
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：US20170317555A1
公开(公告)日：2017-11-02
申请号：US15479521
申请日：2017-04-05
Applicant: Nidec Corporation
Inventor： Hideki NISHIMURA , Yoichi SEKII
CPC classification number: G02B26/105 , G02B7/1821 , H02K1/2706 , H02K1/2786 , H02K7/08 , H02K7/083 , H02K7/14
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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公开(公告)号：US20170315345A1
公开(公告)日：2017-11-02
申请号：US15479517
申请日：2017-04-05
Applicant: Nidec Corporation
Inventor： Hideki NISHIMURA , Yoichi SEKII
CPC classification number: G02B26/105 , G02B7/1821 , H02K1/2706 , H02K1/2786 , H02K7/08 , H02K7/083 , H02K7/14
Abstract: This rotary drive apparatus is an apparatus arranged to rotate a first mirror and a second mirror each of which reflects incident light coming from a light source. The rotary drive apparatus includes rotating bodies including a first rotating body including the first mirror, and a second rotating body including the second mirror; and a motor arranged to support the rotating bodies. The motor 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. At least a portion of the first mirror is arranged on the central axis above the bearing portion. At least a portion of the second mirror is arranged on the central axis below the bearing portion.
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Patent Agency Ranking
公开(公告)号：US20160372988A1
公开(公告)日：2016-12-22
申请号：US15171179
申请日：2016-06-02
Applicant: Nidec Corporation
Inventor： Yoichi SEKII
CPC classification number: H02K7/02 , G02B26/008 , G02B26/0833 , H02K5/02 , H02K5/10 , H02K5/124 , H02K7/08 , H04N9/3114
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.
Abstract translation: 电动机包括旋转部分，固定部分和布置成支撑旋转部分的轴承，使得旋转部分可相对于静止部分旋转。 旋转部分包括沿着中心轴延伸的轴，磁体，设置成围绕轴延伸成环形的转子轮毂和固定到转子毂的飞轮。 转子毂的外表面的至少一部分是金属表面。 金属表面布置在飞轮的外圆周表面的径向内侧。 飞轮的外周面的反射率低于金属表面的反射率。
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公开(公告)号：US20150015106A1
公开(公告)日：2015-01-15
申请号：US14299137
申请日：2014-06-09
Applicant: Nidec Corporation
Inventor： Yoichi SEKII , Kazuya ENOKIZONO
IPC: H02K7/08
CPC classification number: H02K5/165 , F16C17/107 , F16C33/103 , F16C2370/12 , H02K5/1675 , H02K5/1677 , H02K7/08 , H02K2213/03
Abstract: A rotating portion of a spindle motor includes a rotor magnet, a circular plate portion, and an annular raised portion that projects downward from the circular plate portion. A stationary portion includes a stator, a base portion, and an annular recessed portion configured to accommodate the raised portion. The raised portion includes an inner circumferential surface and an outer circumferential surface. The inner circumferential surface is positioned radially opposite a first side surface of the recessed portion with a first minute gap intervening therebetween. The outer circumferential surface is positioned radially opposite a second side surface of the recessed portion with a second minute gap intervening therebetween. The first minute gap has an axial dimension greater than an axial dimension of a seal portion.
Abstract translation: 主轴电动机的旋转部分包括转子磁体，圆板部分和从圆板部分向下突出的环形凸起部分。 固定部分包括定子，基部和被配置为容纳凸起部分的环形凹部。 凸起部包括内周面和外周面。 内圆周表面与凹部的第一侧表面径向相对设置，间隔开第一微小间隙。 外周面与凹部的第二侧面径向相对设置，间隔开第二微小间隙。 第一微小间隙的轴向尺寸大于密封部分的轴向尺寸。
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公开(公告)号：US20140334034A1
公开(公告)日：2014-11-13
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
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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公开(公告)号：US20130342062A1
公开(公告)日：2013-12-26
申请号：US13922343
申请日：2013-06-20
Applicant: Nidec Corporation
Inventor： Yoichi SEKII , Hironori ITSUSAKI , Takeshi ICHINOSE
CPC classification number: H02K5/16 , G11B19/2036 , H02K1/187 , H02K5/1675 , H02K5/1677 , H02K15/00 , Y10T29/49012
Abstract: The present invention reduces contamination on a hard disk by adopting a new structural design for a motor. The motor of the present invention includes an adsorption plate portion in a magnetic space of the motor at a radially inward location relative to a disk placing portion on which hard disks are installed. The magnetic space of the motor is defined by a ceiling portion of a rotor hub and the adsorption plate portion. A liquid surface of lubricant of the fluid dynamic bearing mechanism is arranged radially inwardly relative to the adsorption plate portion, and a gap to which the liquid surface is exposed is connected to the magnetic space. The adsorption plate portion is preferably made of stainless steel. At least a portion of the surface of the adsorption plate portion is not covered with paint or other material so as to be utilized as an adsorption area.
Abstract translation: 本发明通过采用电动机的新结构设计来减少硬盘上的污染。 本发明的电动机在相对于其上安装有硬盘的盘放置部分的径向向内的位置处包括在电动机的磁性空间中的吸附板部分。 电动机的磁空间由转子轮毂的顶部和吸附板部分限定。 流体动力轴承机构的润滑剂的液面相对于吸附板部分径向向内配置，液面露出的间隙与磁性空间连接。 吸附板部优选由不锈钢制成。 吸附板部分的表面的至少一部分未被涂料或其它材料覆盖以便用作吸附区域。
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公开(公告)号：US20130128379A1
公开(公告)日：2013-05-23
申请号：US13739402
申请日：2013-01-11
Applicant: Nidec Corporation
Inventor： Junya MIZUKAMI , Takayuki OE , Yoichi SEKII , Naoki SABASHI , Takehito TAMAOKA , Takashi YAMAMOTO , Shigeki HORIKI , Kazushi MIURA , Mitsuhiro TAKEMOTO , Kazuhiro SATO
CPC classification number: H02K7/08 , F16C17/107 , F16C33/1065 , F16C33/107 , F16C33/745 , F16C2202/60 , F16C2370/12 , G11B19/00 , G11B19/2036 , G11B25/043 , H02K5/1675
Abstract: A motor includes a stationary portion and a rotating portion. The stationary portion includes a shaft portion and an upper thrust portion. The upper thrust portion includes a tubular first outer circumferential surface arranged radially outside the upper thrust portion, and a tubular second outer circumferential surface arranged above the first outer circumferential surface. The rotating portion includes a sleeve portion, a tubular portion, and an annular cover portion. The annular cover portion includes a plate portion and an inner annular projecting portion arranged to project upward or downward. An inner circumferential surface of the inner annular projecting portion is arranged above an inner circumferential surface of the tubular portion. An upper seal portion includes a surface of a lubricating oil located therein. The inner circumferential surface of the inner annular projecting portion and the second outer circumferential surface are arranged opposite to each other with an axially extending gap therebetween.
Abstract translation: 电动机包括固定部分和旋转部分。 固定部分包括轴部分和上推力部分。 上推力部包括设置在上推力部的径向外侧的管状的第一外周面和配置在第一外周面的上方的管状的第二外周面。 旋转部分包括套筒部分，管状部分和环形盖部分。 环形盖部分包括板部分和布置成向上或向下突出的内环形突出部分。 内环形突出部的内周面设置在管状部的内周面的上方。 上密封部分包括位于其中的润滑油的表面。 内环形突出部和第二外周面的内周面彼此相对设置，在其间具有轴向延伸的间隙。
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