公开(公告)号：US20250132627A1

公开(公告)日：2025-04-24

申请号：US18915883

申请日：2024-10-15

Applicant: NIDEC CORPORATION

Inventor： Mitsuhiro TAKEMOTO ,  Kenji FUKAMI ,  Masahiro SHIRAISHI

IPC: H02K3/50 ,  H02K1/30 ,  H02K7/08

Abstract: A motor includes a rotor rotatable about a central axis extending in an axial direction, a stator including coil assemblies arranged in a circumferential direction, and a bus bar assembly including a bus bar to electrically connect end portions of the coil assemblies to each other. A rotor recessed portion recessed in the axial direction is defined in the rotor, and at least a portion of the bus bar is accommodated in the rotor recessed portion.

公开(公告)号：US20180076696A1

公开(公告)日：2018-03-15

申请号：US15692287

申请日：2017-08-31

Applicant: Nidec Corporation

Inventor： Kosuke MIZUIKE ,  Tsuyoshi HIROKAWA ,  Kenji FUKAMI ,  Koji KADOWAKI

IPC: H02K11/33 ,  H02K11/00 ,  H02K5/08 ,  H02K15/14 ,  H02K15/02 ,  H02K1/16

CPC classification number: H02K11/33 ,  H02K1/16 ,  H02K5/08 ,  H02K5/1735 ,  H02K11/0094 ,  H02K15/0062 ,  H02K15/02 ,  H02K15/14 ,  H02K2211/03

Abstract: A stationary portion of a motor includes a stator core including teeth, an insulator covering a surface of the stator core, a coil including a conductive wire, a housing, and a circuit board. The housing includes a cylindrical portion in which the stator core is fixed to the outer circumference thereof and a base portion extending from the cylindrical portion radially outward. The circuit board is disposed above the base portion and below the stator core, to which the conductive wire is electrically connected. The insulator includes a tubular portion covering the outer circumference of the cylindrical portion and a vertically deformable elastic portion protruding from the tubular portion radially outward. The circuit board is fixed to the upper surface of a seat portion of the base portion. The circuit board is in contact with the lower surface of the elastic portion radially inside the seat portion.