公开(公告)号：US20220271595A1

公开(公告)日：2022-08-25

申请号：US17592538

申请日：2022-02-04

Applicant: Nidec Corporation

Inventor： Tatsuro KAWAMOTO ,  Yuhei YAMAGUCHI ,  Yoshiaki YAMASHITA

IPC: H02K3/34 ,  H02K3/50 ,  H02K1/16 ,  H02K9/19

Abstract: A stator includes a stator core that includes a core back portion having an annular shape and with a central axis as a center and tooth portions extending from the core back portion to an inside in a radial direction and arranged in a circumferential direction, insulators that are attached to the tooth portions from the inside in the radial direction, a coil that is wound around the insulator, and a cover that supports an inner surface of the insulator opposing the inside in the radial direction from the inside in the radial direction.

公开(公告)号：US20210376684A1

公开(公告)日：2021-12-02

申请号：US17329154

申请日：2021-05-25

Applicant: NIDEC CORPORATION

Inventor： Quang DANH Ho ,  Yuhei YAMAGUCHI

IPC: H02K5/16 ,  H02K7/08 ,  F16C35/00

Abstract: Provided is a motor including: a rotor, a stator, a first and second bearing, a support member, a housing including a first flat part and a cylindrical part, and a bearing holder. The cylindrical part includes: a first inner circumferential surface inside which is provided the stator; a second inner circumferential surface, a distance from the second inner circumferential surface to a central axis being greater than a distance from the first inner circumferential surface to the central axis, and the second inner circumferential surface contacting an outer circumferential surface of the bearing holder; and a stepped surface, connecting the first and the second inner circumferential surfaces, and contacting a lower surface of the bearing holder. The housing further includes a riveting part located on the second inner circumferential surface of the cylindrical part and fixing the bearing holder to the second inner circumferential surface of the cylindrical part.

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：US20220037967A1

公开(公告)日：2022-02-03

申请号：US17278650

申请日：2019-09-26

Applicant: NIDEC CORPORATION

Inventor： Yuhei YAMAGUCHI ,  Takayuki MAKINO ,  Keigo NAKAMURA ,  Hisashi FUJIHARA

IPC: H02K11/33 ,  H02K5/16 ,  H02M7/00 ,  H02K5/22

Abstract: A motor includes a rotor configured to rotate about a central axis extending in an up-down direction, a stator located radially outside the rotor, a bracket located above the stator, a circuit board held by the bracket and disposed along a plane perpendicular to an axial direction, and a bus bar held by the bracket and connected to the circuit board at a terminal connection portion. The bracket includes a board support portion supporting the circuit board from below, and a wall portion protruding upward to be higher than the board support portion and surrounding the circuit board. The wall portion has a cutout portion extending downward from an upper end of the wall portion.

公开(公告)号：US20210050760A1

公开(公告)日：2021-02-18

申请号：US17088642

申请日：2020-11-04

Applicant: Nidec Corporation

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

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

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 assembly on an upper side in an axial direction of the stator. The bus bar assembly 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.