公开(公告)号：US20200153302A1

公开(公告)日：2020-05-14

申请号：US16667984

申请日：2019-10-30

Applicant: Nidec Corporation

Inventor： Yusaku YOSHIDA ,  Takao ATARASHI ,  Chiharu KOBAYASHI ,  Kentaro SATO

IPC: H02K3/18 ,  H01R25/16 ,  H02K3/52

Abstract: A bus bar assembly includes bus bars and a bus bar holder that is made of an insulating material and holds the bus bars in a non-contact state. The bus bars include base portions that overlap with other bus bars in the axial direction, and connecting portions extending from the base portions along the radial direction. At least two of the bus bars include stepped portions extending toward the other bus bars between proximal ends of the connecting portions and connection ends connected to windings. The bus bar holder molds the base portions and the stepped portions in a state where the connection ends are exposed.

公开(公告)号：US20240030771A1

公开(公告)日：2024-01-25

申请号：US18221450

申请日：2023-07-13

Applicant: Nidec Corporation

Inventor： Jinfeng MA ,  Keisuke YOSHINO ,  Chiharu KOBAYASHI ,  Yu WANG

IPC: H02K3/50

CPC classification number: H02K3/50 ,  H02K2203/09

Abstract: A motor includes a bus bar assembly including a resin holder and a wire integrally provided in the resin holder. The wire is connected to an external power supply and a coil leading-out wire of the motor, the resin holder is provided with a positioning hole penetrating in an axial direction, and at least a portion of the wire is exposed from the positioning hole. The wire is integrally provided in the resin holder simply through the positioning hole, and thus the resulting bus bar assembly is low in cost and light in weight.

公开(公告)号：US20210135518A1

公开(公告)日：2021-05-06

申请号：US16473639

申请日：2017-12-22

Applicant: Nidec Corporation

Inventor： Akira ICHIEN ,  Hiroshi KITAGAKI ,  Yuya SAITO ,  Chiharu KOBAYASHI

IPC: H02K1/27 ,  H02K5/173 ,  H02K16/02

Abstract: A rotor includes a first rotating body and a second rotating body. The first rotating body includes a first rotor core and first magnets arranged in a circumferential direction. An outer side surface of the first rotating body includes first outer side surfaces curved in a circular arc shape and arranged in the circumferential direction. The first outer side surface is an outer side surface of the first magnet or an outer side surface of the first rotor core. The second rotating body is positioned on a side lower than the first rotating body in an axial direction and includes a second rotor core and second magnets arranged in the circumferential direction. An outer side surface of the second rotating body includes second outer side surfaces curved in a circular arc shape and arranged in the circumferential direction.

公开(公告)号：US20190267862A1

公开(公告)日：2019-08-29

申请号：US16319553

申请日：2017-03-30

Applicant: Nidec Corporation

Inventor： Takashi HATTORI ,  Takahiro KIZU ,  Toshiya OKAMOTO ,  Yuichi NISHIKAWA ,  Yoshiaki YAMASHITA ,  Mitsuo KODAMA ,  Yuya SAITO ,  Shingo FUKUMOTO ,  Chiharu KOBAYASHI

IPC: H02K3/50 ,  H02K9/22 ,  H02K11/33

Abstract: A motor includes a rotor including a shaft extending axially, a stator surrounding a radial outside of the rotor and including a coil defined by a wound coil wire, a holder disposed on an axially upper side of the stator, the coil wire being inserted into the holder, the holder including through-holes extending axially, and a circuit board disposed on the axially upper side of the holder, an electronic component being mounted on the circuit board. When the holder is viewed from the axially upper side, the through-holes are located in a region where a center angle (α) centered on the shaft is less than or equal to 180 degrees.

公开(公告)号：US20190173350A1

公开(公告)日：2019-06-06

申请号：US16323037

申请日：2017-08-09

Applicant: Nidec Corporation

Inventor： Mitsuo KODAMA ,  Yuya SAITO ,  Shingo FUKUMOTO ,  Chiharu KOBAYASHI

IPC: H02K5/173 ,  H02K3/52 ,  H02K7/08 ,  H02K11/30

CPC classification number: H02K5/1732 ,  H02K3/522 ,  H02K5/04 ,  H02K5/22 ,  H02K7/083 ,  H02K11/30 ,  H02K2203/06

Abstract: A motor includes a rotor including a shaft, a stator, an upper bearing supporting an upper side of the shaft, a lower bearing supporting a lower side of the shaft, a bearing holder supporting the upper bearing, a housing accommodating the rotor, the stator, and the bearing holder and including an opening on an upper side, and a controller electrically connected to coil lead wires, and having an electronic component mounted thereon. An outer circumferential surface of the bearing holder is fixed while contacting an inner circumferential surface of the housing, and the bearing holder includes a notch cutout extending inward from the outer circumferential surface, and at least one of the coil lead wires extends upward through the notch.