公开(公告)号：US20130094342A1

公开(公告)日：2013-04-18

申请号：US13705608

申请日：2012-12-05

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Hirokazu SHIRAI ,  Junya MIZUKAMI ,  Kazuyoshi SAITO ,  Hideki NISHIMURA ,  Atsushi YAWATA

IPC: G11B19/20 ,  H02K5/24

CPC classification number: G11B19/2027 ,  G11B19/2009 ,  H02K5/24 ,  H02K7/085 ,  H02K7/09

Abstract: A spindle motor includes a stationary portion and a rotating portion. The rotating portion includes a magnet arranged around a central axis extending in a vertical direction. The stationary portion includes a base member and a magnetic member arranged below the magnet and fixed to the base member. The base member includes an upper surface extending out perpendicularly or substantially perpendicularly to the central axis, and a wall surface extending in an axial direction. The magnetic member includes an annular plate portion arranged on the base member and a projecting portion arranged to extend downward from the plate portion. At least a portion of the projecting portion is arranged to be in contact with the wall surface. An adhesive is arranged between the plate portion and the upper surface of the base member and between the projecting portion and the wall surface.

Abstract translation: 主轴电动机包括固定部分和旋转部分。 旋转部包括围绕在垂直方向延伸的中心轴线布置的磁体。 固定部包括基部构件和布置在磁体下方并固定到基座构件的磁性构件。 基部构件包括垂直于或基本上垂直于中心轴线延伸的上表面和沿轴向方向延伸的壁表面。 磁性构件包括布置在基底构件上的环形板部分和布置成从板部向下延伸的突出部分。 突出部分的至少一部分被布置成与壁表面接触。 粘合剂布置在板部分和基部构件的上表面之间以及突出部分和壁表面之间。

公开(公告)号：US20190097475A1

公开(公告)日：2019-03-28

申请号：US16107100

申请日：2018-08-21

Applicant: Nidec Corporation

Inventor： Yoichi SEKII

IPC: H02K1/18 ,  H02K1/14 ,  H02K1/27 ,  H02K3/52

Abstract: A conducting wire includes an incoming portion, coil portions, an outgoing portion leading out of an armature, and circumferentially extending portions. The circumferentially extending portions include an alternately arranged portion extending alternately on first and second axial sides of circumferentially adjacent ones of teeth, and a passage line portion extending on a same axial side of circumferentially adjacent ones of the teeth. One to two rounds of the circumferentially extending portions extend along a core back. The passage line portion extends on a same axial side over two of the teeth which have at least one of the incoming portion and the outgoing portion located circumferentially therebetween, and is radially outside of at least one of the incoming portion and the outgoing portion.

公开(公告)号：US20180348505A1

公开(公告)日：2018-12-06

申请号：US15957987

申请日：2018-04-20

Applicant: Nidec Corporation

Inventor： Yoichi SEKII

IPC: G02B26/08 ,  H02K7/02 ,  H02K7/08 ,  H02K7/00

Abstract: This rotary drive apparatus is arranged to cause incoming light coming from a light source to be emitted to an outside while changing the direction of the incoming light, and includes a motor including a hollow shaft arranged to extend along a central axis extending in a vertical direction, the hollow shaft including a through hole arranged to pass therethrough in an axial direction. The through hole defines a light path along which the incoming light travels. A light-transmitting member is arranged to be in contact with an inner circumferential surface of the hollow shaft over the entire circumferential extent of the inner circumferential surface of the hollow shaft, over at least a portion of the vertical extent of the through hole.

公开(公告)号：US20180285610A1

公开(公告)日：2018-10-04

申请号：US15728589

申请日：2017-10-10

Applicant: Nidec Corporation

Inventor： Yoichi SEKII

IPC: G06K7/10 ,  F21V7/10 ,  F21V13/04

CPC classification number: G06K7/10544 ,  F21V7/10 ,  F21V13/04 ,  G06K7/14 ,  G06K2007/10485 ,  Y02E60/16

Abstract: A housing is arranged to house therein at least a portion of a rotary drive apparatus arranged to rotate an optical component arranged to reflect incoming light coming from a light source. The housing includes a first tubular portion being tubular, arranged to extend along a central axis extending in a vertical direction, and having a first cavity defined radially inside of the first tubular portion; and a second tubular portion being tubular, connected to a lower portion of the first tubular portion directly or indirectly, and having a second cavity defined radially inside of the second tubular portion. The first cavity is arranged to define a light path along which the incoming light travels, and is connected to the second cavity. The second tubular portion is arranged to house at least a portion of the optical component therein. The first and second tubular portions are defined by a single monolithic member.

公开(公告)号：US20160125896A1

公开(公告)日：2016-05-05

申请号：US14690583

申请日：2015-04-20

Applicant: Nidec Corporation

Inventor： Yoichi SEKII ,  Asami ITO

IPC: G11B5/10

CPC classification number: G11B19/2036 ,  F16C17/102 ,  G11B19/20 ,  H02K7/088

Abstract: A method of manufacturing a fluid bearing apparatus includes plating a metallic base material including a cylindrical base material inner circumferential surface, and pressing by bringing a contact portion of a pressing member into contact with a plating layer on the base material inner circumferential surface in the plating step. At least a portion of the pressing member including the contact portion has a Young's modulus equal to or greater than a Young's modulus of the base material. In the pressing step a surface of the plating layer is smoothened without causing a plastic deformation of the base material by bringing the pressing member into contact with the plating layer.

Abstract translation: 制造流体轴承装置的方法包括：对包括圆筒形基材内周面的金属基材进行电镀，并且通过使按压部件的接触部分与电镀基材内周面上的镀层接触来进行加压 步。 包括接触部分的按压构件的至少一部分具有等于或大于基材的杨氏模量的杨氏模量。 在压制步骤中，通过使按压部件与镀层接触，镀层的表面平滑化而不引起基材的塑性变形。

公开(公告)号：US20150348582A1

公开(公告)日：2015-12-03

申请号：US14596478

申请日：2015-01-14

Applicant: Nidec Corporation

Inventor： Yoichi SEKII

IPC: G11B19/20 ,  H02K7/08

CPC classification number: H02K1/30 ,  G11B19/2036 ,  G11B19/2045 ,  H02K7/086

Abstract: A motor includes a rotor hub with a first horizontal surface, a cylindrical surface, a second horizontal surface, and a projecting portion. The first horizontal surface is located above the sleeve. The cylindrical surface extends downward from the first horizontal surface. The second horizontal surface is located above a stator. The projecting portion projects downward from the second horizontal surface, and surrounds the sleeve or the holding portion. The cylindrical surface and an outer circumferential surface of the sleeve together define a tapered gap therebetween where the radial distance therebetween decreases with increasing height. The holding portion, the projecting portion, and coils are located radially in this order, and at least portions thereof are positioned to radially overlap with one another.

Abstract translation: 马达包括具有第一水平表面的转子轮毂，圆柱形表面，第二水平表面和突出部分。 第一个水平表面位于套筒上方。 圆柱形表面从第一水平表面向下延伸。 第二水平面位于定子上方。 突出部分从第二水平表面向下突出，并且围绕套筒或保持部分。 套筒的圆柱形表面和外圆周表面一起形成一个锥形间隙，其间的径向距离随着高度的增加而减小。 保持部分，突出部分和线圈以该顺序径向地定位，并且其至少部分被定位成彼此径向重叠。

公开(公告)号：US20150108861A1

公开(公告)日：2015-04-23

申请号：US14587099

申请日：2014-12-31

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Takehito TAMAOKA ,  Kazuhiro SATO ,  Kazuhiko FUKUSHIMA ,  Hiroyuki ABE

IPC: H02K5/22 ,  H02K3/44

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.

Abstract translation: 电动机包括固定单元和旋转单元。 固定单元包括定子，具有沿上下方向延伸的至少一个孔的基部和柔性布线基板。 柔性布线基板通过至少一个孔到达比基部的下表面高的位置，并且被布置成向定子提供电力。 柔性布线基板包括布置成高于基部的下表面并连接到定子的连接部分。 连接部分包括布置在其下表面上的焊料部分以覆盖从定子的线圈延伸的引线的一部分。 焊料部分的至少一部分位于孔内。

公开(公告)号：US20150070798A1

公开(公告)日：2015-03-12

申请号：US14459467

申请日：2014-08-14

Applicant: Nidec Corporation

Inventor： Masahiro SHIRAISHI ,  Tsuchitsugu WATANABE ,  Yoichi SEKII

IPC: F16C33/74 ,  G11B15/60 ,  F16C41/00

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。

公开(公告)号：US20140334035A1

公开(公告)日：2014-11-13

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: H02K5/16 ,  H02K7/08 ,  G11B19/20

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。

公开(公告)号：US20140078879A1

公开(公告)日：2014-03-20

申请号：US13789796

申请日：2013-03-08

Applicant: NIDEC CORPORATION

Inventor： Yoichi SEKII ,  Hiroshi KONNO ,  Chiharu FUJII ,  Takuro IGUCHI ,  Shuji IWASAKI

IPC: F16C17/10 ,  G11B19/20 ,  H02K5/16

CPC classification number: F16C17/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036 ,  H02K5/165 ,  H02K5/1677

Abstract: A bearing apparatus includes a stationary shaft, an upper annular portion, a lower annular portion, and a sleeve. An outer circumferential surface of the upper annular portion includes a cylindrical surface and an inclined surface arranged above the cylindrical surface. The cylindrical surface has an axial length smaller than that of the inclined surface of the upper annular portion. One of an upper surface of the sleeve and a lower surface of the upper annular portion includes a pumping groove array defined therein. An upper surface of a lubricating oil is defined in an upper capillary seal portion, while a lower surface of the lubricating oil is defined in a lower capillary seal portion. The upper capillary seal portion has an opening angle larger than that of the lower capillary seal portion.

Abstract translation: 轴承装置包括固定轴，上环形部分，下环形部分和套筒。 上环形部分的外圆周表面包括圆柱形表面和布置在圆柱形表面上方的倾斜表面。 圆柱形表面的轴向长度小于上部环形部分的倾斜表面的轴向长度。 套筒的上表面和上环形部分的下表面之一包括限定在其中的泵浦槽阵列。 润滑油的上表面限定在上毛细管密封部分中，而润滑油的下表面限定在下毛细密封部分中。 上部毛细管密封部分具有比下部毛细管密封部分大的开启角度。