公开(公告)号：US20220200380A1

公开(公告)日：2022-06-23

申请号：US17558066

申请日：2021-12-21

Applicant: Nidec Corporation

Inventor： Tatsuki SHIGETA

IPC: H02K1/2783 ,  H02K1/24

Abstract: A rotor rotatable about a center axis extending in an axial direction. The rotor includes an annular rotor core, a rotor magnet fixed to an inner surface of the rotor core in a radial direction, and a protection portion that presses the rotor magnet against the rotor core from an inside in the radial direction, and fixes the rotor core and the rotor magnet.

公开(公告)号：US20220247286A1

公开(公告)日：2022-08-04

申请号：US17573665

申请日：2022-01-12

Applicant: Nidec Corporation

Inventor： Shigeru MAEDA ,  Tatsuki SHIGETA

IPC: H02K15/02 ,  H02K1/18 ,  H02K1/16 ,  H02K1/27

Abstract: A core body has an annular shape surrounding a central axis extending in an axial direction and includes core pieces connected to each other along a circumferential direction and each including a core piece body and a connector fixed to the core piece body. The connectors in the core pieces adjacent to each other in the circumferential direction include rotating connection portions connected to each other to be rotatable about a rotation axis extending in the axial direction, and rotation stopping portions which come into contact with each other in a radial direction.

公开(公告)号：US20220029504A1

公开(公告)日：2022-01-27

申请号：US17311689

申请日：2019-11-22

Applicant: NIDEC CORPORATION

Inventor： Yusuke MAKINO ,  Riku KONISHI ,  Tatsuki SHIGETA

IPC: H02K5/26 ,  H02K3/52 ,  H02K5/173 ,  H02K11/215 ,  H02K21/16

Abstract: An exemplary embodiment of the present invention provides a motor including: a rotor configured to rotate about a central axis; a stator disposed radially opposite the rotor with a clearance defined between the stator and the rotor; a housing accommodating the rotor and the stator; a bearing supporting the rotor in a rotatable manner; a bearing holder holding the bearing, the bearing holder being fixed to the housing; a rotation sensor configured to detect rotation of the rotor; and a sensor holder disposed in the bearing holder to hold the rotation sensor. According to an exemplary embodiment of the present invention, the motor includes a position adjustment mechanism configured to adjust a circumferential position of the rotation sensor by integrally rotating the bearing holder and the sensor holder relative to the housing in a circumferential direction.

公开(公告)号：US20220029482A1

公开(公告)日：2022-01-27

申请号：US17311688

申请日：2019-11-25

Applicant: NIDEC CORPORATION

Inventor： Tatsuki SHIGETA

IPC: H02K1/27 ,  H02K11/215 ,  H02K21/16

Abstract: An aspect of the present invention provides a rotor rotatable about a central axis, the rotor including: a rotor core having a ring shape; a rotor magnet fixed to a radially outer face of the rotor core; and a protective member circumferentially wound around the rotor magnet to press the rotor magnet from radially outward of the rotor magnet. The rotor magnet includes a hanging portion on which a first end of the protective member is hung circumferentially.