公开(公告)号：US20230042658A1

公开(公告)日：2023-02-09

申请号：US17759112

申请日：2021-02-04

Applicant: MINEBEA MITSUMI Inc.

Inventor： Hirofumi OHBA ,  Kodai KAMEOKA

IPC: H02K1/16 ,  H02K15/02 ,  H02K15/085

Abstract: A motor capable of increasing cogging torque is provided. A motor includes a shaft; a magnetic member including a core including an annular portion and a plurality of spokes and a coil; and a magnet, wherein one of the magnetic member and the magnet is disposed at an inner side of the other; an end portion of each of the spokes and the magnet oppose one another in radial directions nm; the core includes a pair of magnetic pole portions at the end portion of each of the spokes, the a pair of magnetic pole portions extending in both directions of circumferential directions xy; and of the pair of magnetic pole portions of at least one spoke from among the plurality of spokes, the magnetic pole portion at an x side has a larger magnetic resistance than the magnetic pole portion at a y side.

公开(公告)号：US20220268350A1

公开(公告)日：2022-08-25

申请号：US17650262

申请日：2022-02-08

Applicant: MINEBEA MITSUMI Inc.

Inventor： Koichiro HIRABAYASHI ,  Yukimasa MATSUMURA ,  Jun OHMURA ,  Kodai KAMEOKA

IPC: F16H57/025 ,  F16H57/028 ,  F16H57/039 ,  H02K7/116 ,  H02K5/24

Abstract: A rotating device includes a motor, a gear, and a housing configured to accommodate the motor and the gear. The housing includes a first housing, a second housing, and a joining element for joining the first housing and the second housing. The first housing includes a first attaching part attached to an external device. The second housing includes a second attaching part attached to the external device. The first attaching part and the second attaching part include surfaces opposing each other after the housing is assembled. The first attaching part and the second attaching part include the joining element.