公开(公告)号：US20190252941A1

公开(公告)日：2019-08-15

申请号：US16342076

申请日：2016-11-02

申请人： Mitsubishi Electric Corporation

发明人： Yoshihiko ONISHI ,  Tetsuya IWATA ,  Koji TAMURA

IPC分类号： H02K5/24 ,  H02K1/14 ,  H02K3/32 ,  H02K9/22

CPC分类号： H02K5/24 ,  H02K1/146 ,  H02K1/18 ,  H02K3/325 ,  H02K5/04 ,  H02K9/22 ,  H02K2203/12

摘要： A rotary electric machine includes: a floored cylindrical case in which an opening at a first end of a cylindrical portion is closed by a floor portion; a stator that includes: an annular stator core that is held inside the case by being fitted together with and fixed to the cylindrical portion; and coils that are mounted to the stator core; a frame that closes an opening at a second end of the cylindrical portion; and a rotor that is fixed to a rotating shaft, and that is disposed on an inner circumferential side of the stator, wherein: a first stress relieving indented portion is formed around an entire circumference at a first end of an inner circumferential surface of the cylindrical portion such that a gap is formed between a first end portion of an outer circumferential surface of the stator core and the cylindrical portion.

公开(公告)号：US20160204666A1

公开(公告)日：2016-07-14

申请号：US14910800

申请日：2013-10-22

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： Tetsuya IWATA ,  Isao SONODA ,  Satoru AKUTSU ,  Masatsugu NAKANO

IPC分类号： H02K1/27 ,  H02K1/28

CPC分类号： H02K1/278 ,  H02K1/276 ,  H02K1/28 ,  H02K1/30 ,  H02K2201/09 ,  H02K2213/03

摘要： A rotor (1) for a rotary electric machine includes a rotor core (2) including a first core portion (20) having a plurality of core pieces (5, 6) joined together through caulking portions (2a) and a hollow first lightening portion (20a), and a second core portion (21) having a plurality of core pieces (7, 8) joined together through caulking portions (2a) and a press-fit portion (21b). A radial magnetic path width of a ring-shaped outer circumferential portion formed by laminating the first core portion (20) and the second core portion (21) changes along a circumferential direction of the rotor core (2). Therefore, a weight and an inertia can be reduced.

摘要翻译： 一种用于旋转电机的转子（1）包括：转子芯（2），包括具有通过铆接部分（2a）连接在一起的多个芯片（5,6）的第一芯部分（20）和中空的第一减轻部分 （20a）和具有通过铆接部（2a）和压入部（21b）接合在一起的多个芯片（7,8）的第二芯部（21）。 通过层叠第一芯部（20）和第二芯部（21）而形成的环状外周部的径向磁路宽度沿着转子铁芯（2）的周向发生变化。 因此，可以减轻重量和惯性。