公开(公告)号：US20190267858A1

公开(公告)日：2019-08-29

申请号：US16278873

申请日：2019-02-19

申请人： Nidec Corporation

发明人： Kazuhiko SHIOZAWA ,  Itaru NABESHI ,  Kenta MORIYASU ,  Yusuke WATANABE ,  Hitoshi TAKAKI ,  Tatsuya TATARA ,  Kenta MIYOSHI

IPC分类号： H02K1/27 ,  H02K1/28

摘要： A rotor assembly includes a shaft disposed along a central axis extending vertically, a tubular magnet disposed on a radially outer surface of the shaft, a lower spacer disposed axially below the magnet and fixed to the radially outer surface of the shaft, and a tubular magnet holder fixed to a radially outer surface of the magnet via an adhesive. At least a portion of an axially lower surface of the magnet holder is in contact with an axially upper surface of the lower spacer.

公开(公告)号：US20190305636A1

公开(公告)日：2019-10-03

申请号：US16356052

申请日：2019-03-18

申请人： Nidec Corporation

发明人： Itaru NABESHI ,  Kazuhiko SHIOZAWA ,  Kenta MORIYASU

IPC分类号： H02K7/00 ,  H02K7/14 ,  H02K1/27 ,  F04D25/06 ,  A47L5/22

摘要： A rotor assembly includes a shaft disposed along a central axis extending vertically, a tubular magnet disposed on a radially outer side of the shaft, an upper spacer disposed axially above the magnet and fixed to a radially outer surface of the shaft, a shaft adhesive film disposed between the radially outer surface of the shaft and a radially inner surface of the magnet to attach the shaft to the magnet, and an upper spacer adhesive film disposed between an axially lower surface of the upper spacer and an axially upper surface of the magnet to attach the upper spacer to the magnet. The shaft adhesive film and the upper spacer adhesive film are an identical adhesive and are continuously formed.