公开(公告)号：US10965179B2

公开(公告)日：2021-03-30

申请号：US16387627

申请日：2019-04-18

Applicant: Nidec Corporation

Inventor： Yuta Yamasaki ,  Hideki Aoi ,  Yoshihisa Kitamura ,  Junya Kawata ,  Rui Izutsu

IPC: H02K5/10 ,  H02K1/16 ,  H02K1/18 ,  F04D25/06 ,  H02K5/173 ,  F04D19/00 ,  H02K5/08

Abstract: A stator assembly includes a stator that drives a rotor rotatable about a central axis extending in a vertical direction, a cover that accommodates the stator, a filling portion that fills a space between the cover and the stator. The cover includes a tubular portion that extends in an axial direction and covers a radially side portion of the stator opposing the rotor in a radial direction, a lid portion that covers an axially upper end portion of the stator, and a cover stepped portion that is provided on a first radial side with respect to the tubular portion. The cover stepped portion comes in contact with the axially upper end portion of the stator and is positioned on an axially lower side with respect to an axially upper end portion of the tubular portion.

公开(公告)号：US10897175B2

公开(公告)日：2021-01-19

申请号：US16388899

申请日：2019-04-19

Applicant: Nidec Corporation

Inventor： Yuta Yamasaki ,  Hideki Aoi ,  Yoshihisa Kitamura ,  Junya Kawata ,  Rui Izutsu

IPC: H02K5/10 ,  H02K5/08 ,  H02K1/04

Abstract: A stator assembly includes a stator that drives a rotor that is rotatable about a central axis extending in a vertical direction, a stator support that supports the stator, and a filling portion that covers the stator. A first radial end portion of the stator is fixed to a second radial side surface of the stator support. An insulator of the stator includes an upper insulator covering an upper surface of a stator core. A first radial end portion of the upper insulator contacts the second radial side surface of the tubular stator support extending in an axial direction. An annular insulator concave portion that is recessed to the axial upper side is provided in the first radial end portion of the upper insulator. A first space, surrounded by the insulator concave portion, the stator core, and the stator support, is filled with a filling material.