公开(公告)号：US20180342913A1

公开(公告)日：2018-11-29

申请号：US16052620

申请日：2018-08-02

申请人： KABUSHIKI KAISHA YASKAWA DENKI

发明人： Takeo SUZUKI ,  Kenichi HIRATA ,  Hiroshi KOGA ,  Motomichi OHTO ,  Yosuke SHIROZU

IPC分类号： H02K1/14 ,  H02K5/00 ,  H02K15/02

摘要： A rotating electrical machine includes a frame, and a stator core fixed to an inner peripheral surface of the frame and including a plurality of split cores disposed in a peripheral direction. Each of the plurality of split cores includes a groove disposed along an axial direction on a central position in the peripheral direction on an outer peripheral surface of the split core, and a first protrusion disposed on a bottom of the groove and protruding outward in a radial direction.

公开(公告)号：US20190013706A1

公开(公告)日：2019-01-10

申请号：US16131037

申请日：2018-09-14

申请人： KABUSHIKI KAISHA YASKAWA DENKI

发明人： Takeo SUZUKI ,  Motomichi OHTO ,  Kenichi HIRATA ,  Hiroki TAKAMURA ,  Yosuke SHIROZU ,  Yuta MATSUNAMI

IPC分类号： H02K1/18

摘要： A rotating electrical machine includes a plurality of core pieces forming a stator core. Each of the core pieces includes contact surfaces on one side end and another side end in a peripheral direction, a tapered protrusion on the contact surface of the one side end, the protrusion including first inclined surfaces outside and inside, and a recess on the contact surface of the other side end, the recess including second inclined surfaces contacting the first inclined surfaces outside and inside to receive the protrusion of adjacent core piece. A cross-sectional shape of the protrusion is a shape such that, inside a circle centered on a first end portion with a distance being a radius between a second end portion located on an opposite side of the first end portion and the first end portion, at least a part of the first inclined surfaces contact the second inclined surfaces.