公开(公告)号：US20240356399A1

公开(公告)日：2024-10-24

申请号：US18684988

申请日：2021-08-31

Applicant: MINEBEA MITSUMI Inc.

Inventor： Takuji YAMADA ,  Toru WATANABE

IPC: H02K1/278

CPC classification number: H02K1/278 ,  H02K2201/03

Abstract: A motor includes: a rotor including a yoke, a first magnet, and a second magnet opposing the first magnet; and a stator. The yoke includes a hole and a frame surrounding the hole. The first magnet is disposed in the hole of the yoke. The second magnet includes a first surface opposing the frame of the yoke in the peripheral direction and a second surface opposing the stator in the radial direction.

公开(公告)号：US20240356398A1

公开(公告)日：2024-10-24

申请号：US18294236

申请日：2022-07-08

Applicant: MINEBEA MITSUMI Inc.

Inventor： Takuji YAMADA ,  Kouji KEBUKAWA ,  Toru WATANABE ,  Naoto TOYOMURA

IPC: H02K1/276 ,  H02K21/16

CPC classification number: H02K1/2773 ,  H02K21/16

Abstract: Provided is a rotor allowing effectively utilizing magnetic flux generated from a magnet, a motor using the rotor, and an electronic device. Provided are a rotor, a motor using the rotor, and an electronic device, the rotor including a plurality of magnetic bodies stacked in an axial direction and a plurality of magnets. The magnetic body includes: an annular part; a plurality of magnetic pole pieces extending in a radial direction; and a plurality of coupling parts configured to couple each of the plurality of magnetic pole pieces and the annular part. The plurality of magnets are each disposed between two adjacent magnetic pole pieces among the plurality of magnetic pole pieces in a circumferential direction. The coupling part extends with both components including a component in the radial direction and a component in the circumferential direction.