公开(公告)号：US20240177736A1

公开(公告)日：2024-05-30

申请号：US18283444

申请日：2022-03-31

Applicant: NIDEC CORPORATION

Inventor： Kazuhiro SATO ,  Shingo SUGINOBU ,  Junya MIZUKAMI ,  Masahiro IMAHORI ,  Tomoki UCHIBORI ,  Naoyuki KIMURA

IPC: G11B19/20 ,  G11B5/82

CPC classification number: G11B19/2009 ,  G11B5/82

Abstract: A spindle motor includes a shaft, a base part, a stator core, a rotor, and a bearing part. The shaft extends along a center axis extending in the vertical direction and has a screw hole extending axially downward from the upper end thereof. The screw hole has a screw part onto which a screw is screwed. The bearing part includes an upper annular member, a lower annular member, and a sleeve. The upper annular member and the lower annular member protrude radially outward from an outer peripheral surface of the shaft and are disposed to be spaced apart from each other in the axial direction. The sleeve covers the outer peripheral surface of the shaft, extends in the axial direction, and is defined in a cylindrical shape. The upper end of the upper annular member is disposed lower than the lower end of the screw part in the axial direction.

公开(公告)号：US20230018843A1

公开(公告)日：2023-01-19

申请号：US17865366

申请日：2022-07-14

Applicant: NIDEC CORPORATION

Inventor： Masahiro IMAHORI ,  Kazuhiro SATO ,  Tomoki UCHIBORI

IPC: H02K5/167 ,  H01L35/30 ,  H02K7/00 ,  H02K7/08 ,  H02K21/22 ,  G11B17/02

Abstract: A motor includes a shaft, a base, a stator, a rotor, a bearing, and at least one or more temperature adjusters. The shaft extends along a central axis extending in an axial direction. The base extends in a radial direction from an end of the shaft in an axially one direction. The stator has an annular shape surrounding the shaft, and is disposed further in an axially other direction than the base. The rotor is rotatable about the central axis. The bearing rotatably supports the rotor. The temperature adjuster adjusts an ambient temperature of the bearing. The shaft has a shaft hole recessed in the axial direction from an axial end of the shaft. The temperature adjuster is disposed in the shaft hole and overlaps at least a portion of the bearing as viewed in the radial direction.

公开(公告)号：US20190214052A1

公开(公告)日：2019-07-11

申请号：US16192060

申请日：2018-11-15

Applicant: Nidec Corporation

Inventor： Kazuhiro SATO ,  Seiji MARUOKA ,  Katsuya TAKAHASHI

IPC: G11B19/20 ,  H02K1/27 ,  H02K1/30 ,  H02K15/03

CPC classification number: G11B19/2045 ,  H02K1/2786 ,  H02K1/30 ,  H02K15/03 ,  H02K2201/03

Abstract: A yoke includes a first cylindrical unit held by a radially outside surface of a rotor base, a yoke annular unit extending radially outwardly from an axially lower end of the first cylindrical unit, and a second cylindrical unit extending axially downward from a radially outer end of the yoke annular unit, and a magnet fixed to a radially inside surface of the second cylindrical unit.

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

IPC: H02K5/22 ,  G11B25/04 ,  H02K3/52 ,  H02K1/14 ,  H02K3/44 ,  H02K5/00

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.

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

IPC: H02K1/27 ,  G11B19/20

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。

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：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

IPC: H02K7/08 ,  G11B19/00

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。

公开(公告)号：US20230352049A1

公开(公告)日：2023-11-02

申请号：US18136958

申请日：2023-04-20

Applicant: Nidec Corporation

Inventor： Naoyuki KIMURA ,  Kazuhiro SATO ,  Tomoki UCHIBORI

IPC: G11B19/20

CPC classification number: G11B19/2036

Abstract: A motor includes a shaft, a base portion, a stator, and a rotor. The shaft extends along a central axis extending in an axial direction. The base portion extends in a radial direction on one axial direction side of the shaft. The stator is located in another axial direction with respect to the base portion and surrounds the shaft. The rotor is rotatable around the central axis. The rotor includes a rotor tube portion, a magnet, and a rotor flange portion. The rotor tube portion surrounds the stator. The magnet is opposed to the stator in the radial direction. The rotor flange portion extends in a radially outer direction from one axial end portion of the rotor tube portion. The rotor tube portion includes a yoke tube portion and a hub tube portion. The yoke tube portion is located on a radially inside surface of the hub tube portion.