公开(公告)号：US20160254711A1

公开(公告)日：2016-09-01

申请号：US15052285

申请日：2016-02-24

Applicant: NIDEC CORPORATION

Inventor： Tatsuro KAWAMOTO ,  Takayuki MIGITA ,  Takao ATARASHI ,  Yasuaki NAKAHARA

IPC: H02K1/27 ,  H02K5/16

CPC classification number: H02K1/2773 ,  H02K1/272 ,  H02K1/274 ,  H02K15/03 ,  H02K2213/03

Abstract: A motor may include a rotor including a shaft; a stator; and a bearing supporting the shaft. The rotor may include a plurality of core pieces on an outer side of the shaft, a plurality of permanent magnets, and a mold resin part between the core pieces. The neighboring core pieces may include a magnet insertion hole provided therebetween. The permanent magnet may include two poles, with poles of neighboring magnets facing each other having identical polarity. The mold resin part may include at least one first guide part disposed closer to one side than the center between neighboring core pieces, and covers at least a portion of a surface on one side of the magnet insertion hole in a circumferential direction, the permanent magnet being in direct indirect contact via resin with the core piece disposed on the other side of the magnet insertion hole.

Abstract translation: 马达可以包括：转子，其包括轴; 定子 和支撑轴的轴承。 转子可以包括在轴的外侧上的多个芯片，多个永磁体和在芯片之间的模制树脂部分。 相邻的芯片可以包括设置在它们之间的磁体插入孔。 永磁体可以包括两个极，相邻磁体的磁极彼此相对具有相同的极性。 模具树脂部件可以包括至少一个第一引导部件，该第一引导部件设置成比相邻的芯片之间的中心更靠近一侧，并且在圆周方向上覆盖磁体插入孔的一侧的表面的至少一部分，永磁体 通过树脂直接间接接触，芯片设置在磁体插入孔的另一侧。

公开(公告)号：US20180226851A1

公开(公告)日：2018-08-09

申请号：US15944872

申请日：2018-04-04

Applicant: Nidec Corporation

Inventor： Tatsuro KAWAMOTO ,  Takayuki MIGITA ,  Takao ATARASHI ,  Yasuaki NAKAHARA

IPC: H02K1/27

CPC classification number: H02K1/2773 ,  H02K1/272 ,  H02K1/274 ,  H02K15/03 ,  H02K2213/03

Abstract: A motor may include a rotor including a shaft; a stator; and a bearing supporting the shaft. The rotor may include a plurality of core pieces on an outer side of the shaft, a plurality of permanent magnets, a mold resin part between the core pieces, and an interposed part in contact with a surface on one side in a circumferential direction of each of the core pieces. The neighboring core pieces may include a magnet insertion hole provided therebetween. The permanent magnet may include two poles, with poles of neighboring magnets facing each other having identical polarity. Each of the permanent magnets is in indirect contact with the core piece positioned on the other side in the circumferential direction of the magnet insertion hole via the interposed part.

公开(公告)号：US20210226501A1

公开(公告)日：2021-07-22

申请号：US17152813

申请日：2021-01-20

Applicant: NIDEC CORPORATION

Inventor： Tatsuro KAWAMOTO ,  Yunpeng LI ,  Meidan MU ,  Yunting HUANG ,  Xiuquan DONG ,  Cui LI

IPC: H02K3/50 ,  H02K5/22 ,  H02K3/04 ,  H02K3/52

Abstract: The embodiments of the disclosure provide a motor. The motor includes a rotor, a stator, and a bus bar unit. The bus bar unit includes a bus bar and a bus bar holder. The bus bar includes: a first connecting portion; a second connecting portion; a bending portion which connects the first connecting portion and the second connecting portion; and a slit that penetrates the first connecting portion and the second connecting portion. A lead-out portion of the winding is located inside the slit, and electrically connected to the first connecting portion and the second connecting portion.

公开(公告)号：US20160294248A1

公开(公告)日：2016-10-06

申请号：US15083626

申请日：2016-03-29

Applicant: Nidec Corporation

Inventor： Takao ATARASHI ,  Yoshiaki YAMASHITA ,  Tatsuro KAWAMOTO ,  Yusaku YOSHIDA ,  Tomoki IGA

IPC: H02K5/22 ,  H02K3/18 ,  H02K11/38 ,  H02K7/08 ,  H02K11/215 ,  H02K1/14 ,  H02K5/16

CPC classification number: H02K5/225 ,  H02K3/522 ,  H02K5/16 ,  H02K5/161 ,  H02K5/22 ,  H02K7/083 ,  H02K11/215 ,  H02K11/33

Abstract: A motor may include a rotor including a shaft; a stator arranged radially outside of the rotor; a bearing arranged on an upper side of the stator; a tubular housing; a bearing holder arranged on the upper side of the stator; and a busbar unit arranged on an upper side of the bearing holder. The rotor may include a rotor magnet fixed to the shaft. The stator may include an annular core back; teeth arranged to extend radially inward from the core back; and coils wound around the teeth. The housing may include a housing inner circumferential surface arranged to hold the stator. The bearing holder may be arranged to be in contact with the housing inner circumferential surface. The busbar unit may be arranged to be in contact with the housing inner circumferential surface.

Abstract translation: 马达可以包括具有轴的转子; 定子，其布置在所述转子的径向外侧; 布置在定子的上侧的轴承; 管状外壳; 轴承座，其布置在所述定子的上侧; 以及布置在所述轴承座的上侧的母线单元。 转子可以包括固定到轴的转子磁体。 定子可包括环形芯背; 布置成从芯背向径向向内延伸的齿; 缠绕在牙齿上的线圈。 壳体可以包括布置成保持定子的壳体内周面。 轴承座可以布置成与壳体内周面接触。 母线单元可以布置成与壳体内周面接触。

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：US20160294240A1

公开(公告)日：2016-10-06

申请号：US15085297

申请日：2016-03-30

Applicant: NIDEC CORPORATION

Inventor： Tatsuro KAWAMOTO ,  Takayuki MIGITA ,  Takao ATARASHI ,  Masateru KAWAKAMI ,  Takahiro KIZU

IPC: H02K3/28 ,  H02K3/46 ,  H02K5/16

CPC classification number: H02K3/325 ,  H02K3/38 ,  H02K3/522 ,  H02K5/225

Abstract: A motor may include a rotor including a shaft having a central axis; a stator opposite to the rotor, and comprising coils; a bearing supporting the shaft; a metallic bearing holder covering the stator and supporting the bearing; at least one busbar on an opposite axial side of the bearing holder and including a connection terminal connected with a a coil wire extending from one of the coils; and a coil support between the stator and the bearing holder and fixed to the stator. The bearing holder may include at least one through hole. The coil support may include at least one insulating support portion comprising an opening portion. A portion of the opening portion of the insulating support portion having a smallest cross-sectional area in the opening portion lies inside of an edge of one of the through holes of the bearing holder.

Abstract translation: 马达可以包括具有中心轴的轴的转子; 与转子相对的定子，并且包括线圈; 支撑轴的轴承; 覆盖定子并支撑轴承的金属轴承座; 至少一个母线在所述轴承座的相对的轴向侧上，并且包括与从所述线圈中的一个延伸的线圈线连接的连接端子; 以及在定子和轴承座之间并固定在定子上的线圈支撑。 轴承座可以包括至少一个通孔。 线圈支撑件可以包括至少一个包括开口部分的绝缘支撑部分。 绝缘支撑部的开口部的开口部的截面积最小的部分位于轴承座的一个通孔的边缘的内侧。