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。

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。

公开(公告)号：US12135466B2

公开(公告)日：2024-11-05

申请号：US17407252

申请日：2021-08-20

Applicant: Nidec Corporation

Inventor： Takuro Iguchi

IPC: G02B26/10 ,  G02B7/182 ,  F16C41/00

Abstract: An actuator includes a swing portion swingable about a first axis orthogonal to a central axis extending vertically and about a second axis orthogonal to the first axis and intersecting the central axis. An angle detector includes a pair of first angle detection elements above a non-magnetic structure and extending in the second axis direction with the first axis interposed therebetween when viewed from the central axis direction, and a pair of second angle detection elements extending in the first axis direction with the second axis interposed therebetween. Each of the first angle detection elements and each of the second angle detection elements include a columnar magnetic structure between the swing portion and the non-magnetic structure in the central axis direction, and a detection coil along the outer periphery of the magnetic structure.

公开(公告)号：US11789230B2

公开(公告)日：2023-10-17

申请号：US17015972

申请日：2020-09-09

Applicant: Nidec Corporation

Inventor： Takuro Iguchi

IPC: G02B7/182 ,  G02B26/10 ,  G02B26/08

CPC classification number: G02B7/182 ,  G02B26/0816 ,  G02B26/10

Abstract: An optical element includes a plate portion including a reflecting surface on an upper surface in a direction of a vertically extending central axis, a shaft that extends in a direction of a first axis intersecting with the central axis and is fixed to a lower surface of the plate portion, a magnet below the shaft in the direction of the central axis, and plates that fix the plate portion and the shaft, the plate portion including a protruding portion that extends downward in the direction of central axis from a lower surface, the plate including a shaft fixing portion to which the shaft is fixed and a plate portion fixing portion to which the plate portion is fixed, the plate portion fixing portion being fixed to the protruding portion.

公开(公告)号：US11662573B2

公开(公告)日：2023-05-30

申请号：US17016335

申请日：2020-09-09

Applicant: Nidec Corporation

Inventor： Takuro Iguchi

IPC: G02B26/10 ,  G02B26/08 ,  H02K5/16 ,  H02K3/52 ,  H02K1/14

CPC classification number: G02B26/10 ,  G02B26/085 ,  H02K1/14 ,  H02K3/522 ,  H02K5/16

Abstract: An actuator that swings a swing portion about a first axis and a second axis perpendicular or substantially perpendicular to each other, includes a fixed portion, two first stator cores, two second stator cores, two first coils, and two second coils. The first coil is in the same region as a tooth portion of the first stator core, and the second coil is in the same region as a tooth portion of the second stator core. As viewed in a central axis direction, each extending portion of each of the first stator cores includes end surfaces that face a magnet and oppose each other with the magnet interposed therebetween along the first axis, and each extending portion of each of the second stator cores includes end surfaces that face the magnet and oppose each other with the magnet interposed therebetween along the second axis.

公开(公告)号：US10591716B2

公开(公告)日：2020-03-17

申请号：US15957986

申请日：2018-04-20

Applicant: Nidec Corporation

Inventor： Yoichi Sekii ,  Takuro Iguchi ,  Yuichi Shigematsu

IPC: G02B26/08 ,  H02K7/02 ,  H02K7/08 ,  H02K7/00 ,  H02K21/22 ,  H02K7/14 ,  H02K1/27 ,  G02B26/10

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; a flywheel including at least one optical component arranged to reflect the incoming light or allow the incoming light to pass therethrough; and a laser module including the light source. At least a portion of the laser module is arranged below the base portion arranged to directly or indirectly support a stator. The through hole defines a light path along which the incoming light travels.

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。

公开(公告)号：US11586037B2

公开(公告)日：2023-02-21

申请号：US17015907

申请日：2020-09-09

Applicant: Nidec Corporation

Inventor： Takuro Iguchi

IPC: G02B26/12

Abstract: An optical element includes a plate portion including a reflecting surface on an upper surface in a direction of a vertically extending central axis, a shaft that extends in a direction of a first axis intersecting with the central axis and is fixed to a lower surface of the plate portion, a magnet below the shaft in the direction of the central axis, and a holder below the plate portion to hold the magnet, the holder including a magnet accommodating portion in which the magnet is accommodated, the magnet accommodating portion including a magnet pressing portion that covers at least a portion of a lower surface of the accommodated magnet.

公开(公告)号：US10468954B2

公开(公告)日：2019-11-05

申请号：US16190446

申请日：2018-11-14

Applicant: Nidec Corporation

Inventor： Kazuya Matsumura ,  Yoichi Sekii ,  Takuro Iguchi

IPC: G11B19/20 ,  H02K21/22 ,  H02K1/02 ,  H02K1/27 ,  H02K1/14

Abstract: A spindle motor includes a stationary unit and a rotating unit. The rotating unit is rotatable with respect to the stationary unit in a state in which the stationary unit is aligned with a central axis. The stationary unit includes a stator core and coils. The stator core includes a cylindrical core back and teeth units extending radially outward from an outer circumferential portion of the core back. The coils are defined by a conductive wire wound around each of the teeth units. The rotating unit includes a magnet located radially outside the teeth units. An axial length of the magnet is shorter than an axial length of the teeth unit. A first angle corresponding to a circumferential width of the teeth unit is smaller than a second angle corresponding to a circumferential gap between the adjacent teeth units.

公开(公告)号：US08743505B2

公开(公告)日：2014-06-03

申请号：US13893535

申请日：2013-05-14

Applicant: Nidec Corporation ,  Seagate Technology LLC

Inventor： Hiroki Yamada ,  Junya Mizukami ,  Tsuyoshi Morita ,  Tetsuya Maruyama ,  Takuro Iguchi ,  Troy Michael Herndon ,  Timothy Edward Langlais

IPC: G11B17/02 ,  H02K7/08

CPC classification number: F16C32/0659 ,  F16C17/107 ,  F16C33/107 ,  F16C33/1085 ,  F16C33/745 ,  F16C2370/12 ,  G11B19/2036

Abstract: A fluid dynamic bearing apparatus includes a first minute gap, a second minute gap, a third minute gap, a fourth minute gap, and a fifth minute gap. A flow of a lubricating oil from the fifth minute gap to the fourth minute gap is caused by a plurality of dynamic pressure generating grooves arranged within the fluid dynamic bearing apparatus. This flow causes air bubbles mixed in the lubricating oil within the fifth minute gap to flow toward the third minute gap and be discharged to an outside of the fluid dynamic bearing apparatus through the third minute gap. The fluid dynamic bearing apparatus further includes a plurality of dynamic pressure generating grooves and an annular groove.

Abstract translation: 流体动力轴承装置包括第一微小间隙，第二微小间隙，第三微小间隙，第四微小间隙和第五微小间隙。 润滑油从第五分钟间隙到第四微小间隙的流动由布置在流体动力轴承装置内的多个动压产生槽引起。 该流动使第五分钟间隙内的润滑油中混合的气泡朝向第三微小间隙流动，并通过第三微小间隙排出到流体动力轴承装置的外部。 流体动力轴承装置还包括多个动压产生槽和环形槽。