公开(公告)号：US20190319504A1

公开(公告)日：2019-10-17

申请号：US16461019

申请日：2017-11-02

Applicant: Nidec Corporation

Inventor： Takashi SHIRAISHI ,  Takeshi HONDA ,  Junichi UNO ,  Hisashi FUJIHARA ,  Yasuaki NAKAHARA ,  Keisuke SAITO

IPC: H02K1/27 ,  H02K15/03 ,  H02K15/12

Abstract: A rotor includes a rotor core including laminated thin plate cores. A single thin plate core includes an inner plate portion defining a portion of an inner core portion and outer plate portions defining a portion of an outer core portion. At least some of the laminated thin plate cores include a connecting portion. A number of connecting portion is one or a plurality, and, when the number of connecting portions is a plurality, the connecting portions at positions other than both left and right sides of each other in a circumferential direction, and, in plan view, the thin plate core includes the connecting portion at a position different from that of a connecting portion in another thin plate core adjacent in an axial direction.

公开(公告)号：US20160352189A1

公开(公告)日：2016-12-01

申请号：US15146258

申请日：2016-05-04

Applicant: NIDEC CORPORATION

Inventor： Yosuke YAMADA ,  Ryusuke SATO ,  Yasuaki NAKAHARA ,  Yusuke MAKINO ,  Hisashi FUJIHARA

IPC: H02K11/215

CPC classification number: H02K11/215 ,  H02K5/04 ,  H02K5/225 ,  H02K11/33

Abstract: A case includes a cylindrical housing arranged to hold a stator, and having an opening portion at a top thereof; and a motor cover fitted to an upper side of the housing, and arranged to cover an upper side of the stator. A busbar unit includes a sensor busbar electrically connected to a rotation sensor, and a busbar holder arranged at the opening portion to hold the sensor busbar. The case includes a case through hole arranged to open into a space outside of the case. The busbar holder includes a cylindrical holder body portion having at least a portion thereof arranged radially inside of the opening portion; and a protruding portion arranged to protrude out of the case, and having at least a portion thereof arranged in the case through hole. A gap is defined circumferentially between the protruding portion and an edge of the case through hole.

Abstract translation: 壳体包括布置成保持定子的圆柱形壳体，并且在其顶部具有开口部分; 以及安装在所述壳体的上侧并且被布置成覆盖所述定子的上侧的电机盖。 母线单元包括电连接到旋转传感器的传感器母线和布置在开口部分处以保持传感器母线的汇流条保持器。 壳体包括布置成打开到壳体外部的空间的壳体通孔。 汇流条保持器包括：圆柱形保持器主体部分，其至少一部分布置在开口部分的径向内侧; 以及突出部，其布置成从壳体突出，并且其至少一部分布置在壳体通孔中。 在突出部分和壳体通孔的边缘之间周向地限定间隙。

公开(公告)号：US20190190357A1

公开(公告)日：2019-06-20

申请号：US16282471

申请日：2019-02-22

Applicant: Nidec Corporation

Inventor： Yasuaki NAKAHARA ,  Takayuki MIGITA ,  Hiroshi KITAGAKI ,  Takeshi HONDA ,  Hisashi FUJIHARA

IPC: H02K15/02 ,  H02K1/16 ,  H02K3/28 ,  H02K3/12

CPC classification number: H02K15/024 ,  H02K1/165 ,  H02K1/18 ,  H02K3/12 ,  H02K3/28 ,  H02K15/02

Abstract: A stator includes core pieces in which at least first and second laminate members are laminated, the first laminate member includes a first tooth portion and a first core back portion, the second laminate member includes a second tooth portion and a second core back portion, positions of both circumferential ends of the first core back portion are different from positions of both circumferential ends of the second core back portion, the first core back portion and the second core back portion have an inclined or curved shape at a lower side of one side thereof in the circumferential direction or the other side thereof in the circumferential direction which overlaps the core piece adjacent thereto, and the inclined or curved shape of the first core back portion and the second core back portion is at a portion protruding in the circumferential direction with respect to the second core back portion and the first core back portion in a plan view.

公开(公告)号：US20160352199A1

公开(公告)日：2016-12-01

申请号：US15158699

申请日：2016-05-19

Applicant: Nidec Corporation

Inventor： Takeshi HONDA ,  Yosuke YAMADA ,  Yasuaki NAKAHARA ,  Hisashi FUJIHARA ,  Takayuki MIGITA ,  Tsuyoshi NAKAMURA

IPC: H02K15/12 ,  H02K15/03 ,  H02K11/215 ,  H02K1/27 ,  H02K1/28

Abstract: A manufacturing method comprising: a process S1 of forming a plate member which has a substantially annular scrap portion having a center hole through an axial direction and a core plate portion defining a portion of the core pieces arranged continuously with the scrap portion on a radially inner side of the scrap portion; a process S2 of forming a laminated body, which has the core pieces, by laminating the plate member; a process S3 of providing the laminated body and the shaft in a mold; a process S4 of forming a molding body by inserting a molten resin or a nonmagnetic material in the mold and forming the filling portion of which at least a portion is located between the core pieces; and a process S5 of separating the scrap portion and the core plate portion.

Abstract translation: 一种制造方法，包括：形成板状构件的工序S1，所述板构件具有沿着轴向具有中心孔的大致环形的废料部，以及芯板部，其将与所述废料部连续排列的所述芯片的一部分配置在径向内侧 废料部分的侧面; 通过层叠板构件形成具有芯片的层叠体的工序S2; 在模具中设置层叠体和轴的工序S3; 通过将熔融树脂或非磁性材料插入模具中并形成至少一部分位于芯片之间的填充部分来形成成型体的工艺S4; 以及分离废料部和芯板部的工序S5。

公开(公告)号：US20220320937A1

公开(公告)日：2022-10-06

申请号：US17616188

申请日：2020-06-01

Applicant: NIDEC CORPORATION

Inventor： Hibiki TAKADA ,  Takahiro HIWA ,  Hisashi FUJIHARA ,  Tatsuhiko MIZUTANI

IPC: H02K3/28 ,  H02K1/16 ,  H02K3/12 ,  H02K15/04

Abstract: A busbar unit includes: three-phase busbars connected to three-phase coils; and three-phase external terminals that are members different from the three-phase busbars, the three-phase external terminals being connected to the three-phase busbars and electrically connected to a power supply source. Each of the three-phase external terminals includes: a terminal body portion; a busbar-side connection portion connected to a busbar of one phase from among the three-phase busbars; and a power-supply-source-side connection portion electrically connected to the power supply source. At least two terminals among the three-phase external terminals are different in length of a conduction path through which a current flows between the busbar-side connection portion and the power-supply-source-side connection portion in the terminal body portion.

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：US20190296601A1

公开(公告)日：2019-09-26

申请号：US16316634

申请日：2017-08-25

Applicant: Nidec Corporation

Inventor： Yuhei YAMAGUCHI ,  Ryusuke SATO ,  Hisashi FUJIHARA ,  Keigo NAKAMURA

IPC: H02K3/52 ,  H02K3/50 ,  H02K3/38 ,  H02K5/22 ,  H02K3/28 ,  H02K5/173

Abstract: A motor includes a rotor including a shaft centered on a vertically extending center axis, a stator radially opposite to the rotor and including coils, a bearing supporting the shaft, and a bus bar unit on an upper side in an axial direction of the stator. The bus bar unit includes bus bars including a terminal portion connected to a lead wire drawn out from the coil and a bus bar holder holding the bus bars. The terminal portion includes a slit which extends axially downward and into which the lead wire is fitted. The width of the slit is narrower than the diameter of the lead wire.

公开(公告)号：US20190036406A1

公开(公告)日：2019-01-31

申请号：US16145317

申请日：2018-09-28

Applicant: Nidec Corporation

Inventor： Yasuaki NAKAHARA ,  Takayuki MIGITA ,  Hisashi FUJIHARA ,  Tsuyoshi NAKAMURA

IPC: H02K3/28 ,  H02K1/14 ,  H02K3/18 ,  H02K3/32 ,  H02K3/52

CPC classification number: H02K3/28 ,  H02K1/146 ,  H02K3/04 ,  H02K3/18 ,  H02K3/325 ,  H02K3/52 ,  H02K3/522 ,  H02K2203/09 ,  H02K2213/03

Abstract: A stator includes conductive wires wound around teeth, and slots between adjacent teeth in a circumferential direction. The conductive wires include conductive wires of three phases corresponding to a U-phase, a V-phase, and a W-phase, and the conductive wires are delta connected. Coils, in which any one of the conductive wires is wound around the teeth, are repeatedly disposed in order of the U-phase, the V-phase, and the W-phase in the circumferential direction. In each of the U-phase, the V-phase, and the W-phase, at least two coils are connected in series and adjacent in the circumferential direction. A direction in which the U-phase and W-phase conductive wires are wound around the teeth and a direction in which the V-phase conductive wire is wound around the tooth are opposite.

公开(公告)号：US20230039195A1

公开(公告)日：2023-02-09

申请号：US17792142

申请日：2020-12-11

Applicant: NIDEC CORPORATION

Inventor： Shuhei NAKAMATSU ,  Hisashi FUJIHARA

IPC: H02K7/116 ,  H02K5/04 ,  H02K11/33 ,  B60K1/00 ,  B60K17/12

Abstract: A motor, a reduction gear, a differential gear, and a housing having a cylindrical shape are included. The motor has a rotor and a stator. The rotor rotates around a motor axis. The stator faces the rotor in a radial direction with a gap interposed between them. The reduction gear includes a planetary gear mechanism, and can increase rotational power output from the motor according to a reduction ratio. The differential gear distributes and outputs the rotational power from the reduction gear. The housing houses the motor, the reduction gear, and the differential gear arranged in an axial direction with the motor axis as a common rotation axis. The housing includes a first attachment portion and a second attachment portion arranged on an outer peripheral surface. The first attachment portion and the second attachment portion are arranged on the opposite sides in a direction perpendicular to the axial direction with respect to the motor axis.

公开(公告)号：US20190386535A1

公开(公告)日：2019-12-19

申请号：US16479289

申请日：2018-01-06

Applicant: NIDEC CORPORATION

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

IPC: H02K3/52 ,  H02K1/14 ,  H02K15/02 ,  H02K15/00 ,  B23P19/02

Abstract: A stator includes a stator core disposed about a central axis and covered by an insulator, coils installed on the stator core through the insulator, and an intermediate bus bar electrically connected to a portion of a conducting wire constituting the coils. A method of manufacturing a stator includes a mounting process, a winding process, and a connecting process. An intermediate bus bar is supported at a first position spaced apart from a coil in an axial direction in a mounting portion before the start of the winding process. The intermediate bus bar is fixed at a second position between the first position and the coils in the axial direction after the completion of the winding process.