公开(公告)号：US20040070304A1

公开(公告)日：2004-04-15

申请号：US10679409

申请日：2003-10-07

申请人： Hitachi, Ltd. ,  Japan Servo Co., Ltd.

发明人： Yuuji Enomoto ,  Yasuaki Motegi ,  Masashi Kitamura ,  Yuji Takagai ,  Toshimi Abukawa ,  Takashi Ando

IPC分类号： H02K001/18

CPC分类号： H02K15/022 ,  H02K1/187

摘要： In an electric motor comprising a rotor, a stator, a stator core that constitutes the stator, a core section that constitutes the stator core, a plurality of split core blocks which constitute the core section, and a metallic connection housing that connects the split core blocks in dovetailed form to create one connected core section, the split core blocks are each formed of a laminated steel plate, in that the connection housing is formed of a material softer than the laminated steel plate, and the dovetailed connections at the connection housing are plastically deformed to remove the connection gap existing at each of the dovetailed connections.