公开(公告)号：US20220166279A1

公开(公告)日：2022-05-26

申请号：US17602702

申请日：2019-04-25

Applicant: Mitsubishi Electric Corporation

Inventor： Takaya SHIMOKAWA ,  Hiroki ASO ,  Ryogo TAKAHASHI ,  Naoki TAMURA

IPC: H02K3/52 ,  H02K1/14 ,  H02K21/16 ,  H02K15/02 ,  F24F7/007

Abstract: A stator includes a stator core having a yoke extending in a circumferential direction about an axis and a tooth extending from the yoke toward the axis, an insulator having a winding portion surrounding the tooth, and a coil wound around the winding portion of the insulator. The winding portion of the insulator has a first end portion, a second end portion, and a side portion. The first end portion has a maximum thickness T1 in the direction of the axis, the second end portion has a maximum thickness T2 in the direction of the axis, and the side portion has a maximum thickness T3 in the circumferential direction. The maximum thicknesses T1, T2 and T3 satisfy T3

公开(公告)号：US20230318372A1

公开(公告)日：2023-10-05

申请号：US18042873

申请日：2020-09-09

Applicant: Mitsubishi Electric Corporation

Inventor： Takanori WATANABE ,  Kazuchika TSUCHIDA ,  Takaya SHIMOKAWA ,  Ryogo TAKAHASHI ,  Naoki TAMURA

IPC: H02K1/274 ,  H02K1/28

CPC classification number: H02K1/274 ,  H02K1/28

Abstract: A rotor includes a rotary shaft, a first permanent magnet supported by the rotary shaft, and a second permanent magnet supported by an outer periphery of the first permanent magnet and having a magnetic pole stronger than a magnetic pole of the first permanent magnet . The second permanent magnet includes a plurality of magnet parts arranged at intervals in a circumferential direction of the first permanent magnet. A first width as a width in the circumferential direction of each of the plurality of magnet parts at a central part of the first permanent magnet in an axial direction of the rotary shaft is wider than a second width as a width in the circumferential direction of each of the magnet parts at an end part of the first permanent magnet in the axial direction.

公开(公告)号：US20220140672A1

公开(公告)日：2022-05-05

申请号：US17434061

申请日：2019-03-08

Applicant: Mitsubishi Electric Corporation

Inventor： Takaya SHIMOKAWA ,  Hiroki ASO ,  Ryogo TAKAHASHI ,  Naoki TAMURA

IPC: H02K1/27 ,  H02K7/14 ,  H02K11/20 ,  H02K5/04 ,  F04D25/06

Abstract: An electric motor includes a rotor, a stator, and a magnetic sensor. The rotor includes a rotor core, a permanent magnet, and a sensor magnet. The magnetic sensor detects magnetic flux from the sensor magnet. The electric motor satisfies Rh1>Rm1, where Rh1 is a minimum distance from a rotation axis of the rotor to the magnetic sensor, and Rm1 is a minimum distance from the rotation axis to the permanent magnet.

公开(公告)号：US20210273529A1

公开(公告)日：2021-09-02

申请号：US17255100

申请日：2018-08-02

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroki ASO ,  Takaya SHIMOKAWA ,  Junichiro OYA ,  Naoki TAMURA

IPC: H02K11/215 ,  H02K1/27 ,  H02K7/08 ,  H02K21/14 ,  H02K15/03 ,  F24F7/013

Abstract: A rotor includes a resin magnet and a shaft fixed to the resin magnet. The resin magnet includes a first magnetic flux generating part having a first magnetic pole center and a first inter-pole part and a second magnetic flux generating part having a second magnetic pole center and a second inter-pole part. The first inter-pole part and the second inter-pole part are shifted to each other in a circumferential direction.