公开(公告)号：US20230006498A1

公开(公告)日：2023-01-05

申请号：US17848396

申请日：2022-06-24

Applicant: NIDEC CORPORATION

Inventor： Takayuki MAKINO ,  Masato AONO

IPC: H02K5/04 ,  H02K7/00 ,  H02K1/12 ,  H02K1/22

Abstract: A shaft of a motor includes a first shaft and a second shaft extending from the first shaft to one axial side. A housing includes a neutralizing device holder that holds a first neutralizing device. The neutralizing device holder includes a seal holder that is arranged radially outward of the second shaft and holds a seal member. The first neutralizing device electrically connects the second shaft and the neutralizing device holder. The seal member seals a gap between the second shaft and the seal holder, and is arranged on the other axial side of the first neutralizing device.

公开(公告)号：US20200161914A1

公开(公告)日：2020-05-21

申请号：US16675262

申请日：2019-11-06

Applicant: Nidec Corporation

Inventor： Takashi SHIRAISHI ,  Toru CHIKIRA ,  Hiroshi KITAGAKI ,  Masato AONO

IPC: H02K1/27 ,  H02K1/28

Abstract: A rotor includes magnets, and a rotor core including thin film cores laminated in an axial direction and magnet holes in which the magnets are located. The rotor core includes first thin plate cores and second thin plate cores. The first thin plate cores include an annular first inner plate, first outer plates on a radially outer side of the inner plate and arrayed side by side in the circumferential direction, first inner connecting portions connecting the inner plate and the outer plate, and a first outer connecting portion that is on a radially outer side of the first outer plate and connects the adjacent outer plates in the circumferential direction.

公开(公告)号：US20190386545A1

公开(公告)日：2019-12-19

申请号：US16479286

申请日：2018-01-06

Applicant: NIDEC CORPORATION

Inventor： Shuhei NAKAMATSU ,  Takayuki MIGITA ,  Hisashi FUJIHARA ,  Masato AONO ,  Takashi SHIRAISHI

IPC: H02K11/215 ,  H02K1/28 ,  H02K5/16

Abstract: A motor includes a magnet rotating together with a rotor about a central axis, a substrate on which a sensor to detect a position of the magnet is installed, a housing to hold a stator to drive the rotor, a bearing assembly including a bearing holder, and a conductor assembly between the housing and the bearing assembly. The conductor assembly includes a conductor including a first conductor electrically connected to the sensor through the substrate and a conductor holder covering the conductor. The substrate is fixed to the conductor holder. In the radial direction, a gap is located between an outer side surface of the bearing holder and an inner side surface of the conductor holder, and at least a portion of the magnet is located in the gap.

公开(公告)号：US20220393546A1

公开(公告)日：2022-12-08

申请号：US17750395

申请日：2022-05-23

Applicant: NIDEC CORPORATION

Inventor： Takayuki MAKINO ,  Masato AONO

IPC: H02K7/00 ,  H02K5/16 ,  H02K7/08

Abstract: Provided are: a rotor having a shaft rotatable about a rotation axis; a stator that surrounds the rotor from a radially outer side; a housing that accommodates the rotor and the stator; a bearing that is arranged in the housing and rotatably supports the shaft; an extension shaft arranged at an end portion on one axial side of the shaft to contact the shaft; and a neutralizing member that is arranged in the housing and contacts the extension shaft. The extension shaft has a fixed portion radially overlapping the shaft. The fixed portion has a protrusion radially protruding toward the shaft.

公开(公告)号：US20210320542A1

公开(公告)日：2021-10-14

申请号：US17263896

申请日：2019-08-02

Applicant: NIDEC CORPORATION

Inventor： Masato AONO ,  Hideaki UCHISE ,  Tatsuya ITO

IPC: H02K1/28 ,  H02K1/27

Abstract: A rotor includes a rotor core, a plurality of magnets positioned radially outside the rotor core, a rotor cover having a tubular portion surrounding the rotor core and the magnet, and a resin portion coupling the rotor core and the magnet with each other. The resin portion has a first lid portion positioned on one axial side of the rotor core and the magnet. The rotor cover has a flange portion projecting radially inward from the tubular portion on one axial side of the first lid portion. The first lid portion has a recess portion depressed from a surface on one axial side of the first lid portion. The recess portion is positioned at a position overlapping between the circumferentially adjacent magnets. The flange portion has a first swage portion swaged to the other axial side and positioned inside the recess portion.

公开(公告)号：US20180351428A1

公开(公告)日：2018-12-06

申请号：US16058324

申请日：2018-08-08

Applicant: NIDEC CORPORATION

Inventor： Toshiya OKAMOTO ,  Shota KAWASHIMA ,  Masato AONO ,  Takayuki MIGITA

IPC: H02K3/52 ,  H02K1/14 ,  H02K1/27 ,  H02K3/18 ,  H02K3/32 ,  H02K3/30 ,  H02K5/22 ,  H02K7/14

Abstract: A stator includes a plurality of lead wires extending upward from a coil and a guide member supporting the lead wire above the coil. The guide member is an insulating body. The guide member includes a lower plate, an inner wall, and an upper plate. The lower plate spreads annularly around a central axis. The inner wall extends upward from an inner circumference of the lower plate. The upper plate extends from the inner wall to a radial outside. A single lead wire accommodation space exists on an upper side of the lower plate, a lower side of the upper plate, and a radial outside of the inner wall. The plurality of lead wires are circumferentially disposed along the inner wall in the lead wire accommodation space.

公开(公告)号：US20170033625A1

公开(公告)日：2017-02-02

申请号：US15283895

申请日：2016-10-03

Applicant: NIDEC CORPORATION

Inventor： Hidehiro HAGA ,  Masato AONO ,  Takashi HATTORI

IPC: H02K1/28 ,  H02K1/27

CPC classification number: H02K1/28 ,  H02K1/274 ,  H02K1/278

Abstract: Described herein is a motor including a stationary section and a rotating section. The stationary section includes a stator core having a plurality of teeth, and a coil constituted by a conducting wire wound around each of the plurality of teeth. The rotating section has a plurality of magnets arranged in a circumferential direction, a rotor core which is in contact with the magnets, a magnet holder which is fixed to the rotor core, and an annular plate. The lower surface of the annular plate faces the upper surface of the magnets. Further, the annular plate is fixed to the rotor core and the magnet holder. Employing this structure enables the annular plate to further prevent an upward position shift of the magnets.

Abstract translation: 这里描述的是包括静止部分和旋转部分的马达。 固定部分包括具有多个齿的定子芯，以及由缠绕在多个齿中的每一个上的导线构成的线圈。 旋转部具有沿圆周方向排列的多个磁体，与磁体接触的转子芯，固定在转子芯上的磁体保持件和环形板。 环形板的下表面面对磁体的上表面。 此外，环形板固定到转子芯和磁体保持器。 采用这种结构使得环形板能够进一步防止磁体的向上位置偏移。

公开(公告)号：US20220271603A1

公开(公告)日：2022-08-25

申请号：US17676820

申请日：2022-02-22

Applicant: NIDEC CORPORATION

Inventor： Takayuki MAKINO ,  Tsubasa HIRAYAMA ,  Masato AONO

IPC: H02K5/10 ,  H02K7/00 ,  H02K7/08 ,  H02K9/19 ,  H02K11/40

Abstract: A shaft of a motor includes a first shaft having a tubular shape extending in an axial direction, a lid portion disposed in one axial end portion of the first shaft, a second shaft extending on one axial side from the lid portion, a first shaft through hole penetrating the first shaft in a radial direction, and a second shaft through hole communicating with an inside of the first shaft and an external space of the shaft. The lid portion and the second shaft have conductivity. The second shaft through hole is disposed on one axial side with respect to the first shaft through hole. The second shaft is in contact with an electrical discharging device that electrically connects the shaft and the housing of the motor.

公开(公告)号：US20220094250A1

公开(公告)日：2022-03-24

申请号：US17481364

申请日：2021-09-22

Applicant: Nidec Corporation

Inventor： Takayuki MAKINO ,  Tatsuhiko MIZUTANI ,  Masato AONO

IPC: H02K24/00 ,  H02K5/173 ,  H02K5/20 ,  H02K7/08 ,  H02K7/116 ,  H02K9/19 ,  H02K11/225

Abstract: A motor assembly includes a motor including a rotor including a shaft rotatable about a rotation axis and a stator surrounding the rotor from radially outside, a housing that accommodates the motor, a bearing that is fixed to the housing and rotatably supports the shaft, a resolver including a resolver rotor fixed to the shaft and a resolver stator fixed to the housing, and a contact that has conductivity, is fixed to the housing, and is in contact with a contacted portion at an end portion on one axial side of the shaft. The housing includes an accommodation space in which the contacted portion of the shaft is accommodated. The contact and the resolver are side by side in a direction along a rotation axis in the accommodation space.

公开(公告)号：US20210320548A1

公开(公告)日：2021-10-14

申请号：US17263894

申请日：2019-07-08

Applicant: NIDEC CORPORATION

Inventor： Shinji SHIMODAIRA ,  Takayuki MIGITA ,  Masato AONO ,  Shota KAWASHIMA

IPC: H02K3/52

Abstract: In a stator, a bus bar holder includes: a base; an annular inside wall protruding from a radially inner edge of the base; an annular outside wall protruding from a radially outer edge portion of the base; and a plurality of sidewalls connecting the inside wall and the outside wall. The base, the inside wall, the outside wall, and the sidewall constitute a plurality of recesses. The coil connection units of bus bars protrude from the base. Among the coil leaders, at least a part of the coil leaders is a first coil leader that is accommodated in the recess while the front end is bent onto the other side in the radial direction. The front end of at least one first coil leader is accommodated in each recess and connected to the coil connection unit in the recess.