公开(公告)号：US20200373796A1

公开(公告)日：2020-11-26

申请号：US16856313

申请日：2020-04-23

申请人： DENSO CORPORATION

发明人： Akihiro Kimura

IPC分类号： H02K1/18 ,  H02K5/06 ,  H02K21/16 ,  B62D5/04

摘要： A stator assembly has a motor housing of a cylindrical shape and a stator fixed to an inner peripheral wall of the motor housing by a shrink fitting process. A stator core of the stator includes a projecting portion in contact with the motor housing and a stopper portion, which is smaller than the projecting portion in a radial direction. The stopper portion is in contact with the motor housing in an actual-use temperature range. The projecting portions and the stopper portions are alternately arranged in a circumferential direction in a cyclic manner. A cycle unit is composed of one or more than one projecting portion and one or more than one stopper portion. Multiple stator core sheets are built up in such a way that the cycle units are alternately arranged in an axial direction and neighboring stator core sheets are displaced in the circumferential direction by a predetermined shift angle. A curvature radius of the projecting portion at a position, at which the projecting portion is in contact with the motor housing, is smaller than a radius of a circumscribed circle of the projecting portion.

公开(公告)号：US09735636B2

公开(公告)日：2017-08-15

申请号：US14560871

申请日：2014-12-04

申请人： DENSO CORPORATION

发明人： Asuka Tanaka ,  Akihiro Kimura ,  Jirou Hayashi ,  Makoto Taniguchi

IPC分类号： H02K1/27

CPC分类号： H02K1/278 ,  H02K1/276 ,  H02K2213/03

摘要： Each permanent magnet provided in a rotor includes a projection that projects toward a corresponding predetermined portion of the rotor core. An inner peripheral surface of each permanent magnet, which is radially opposed to the corresponding predetermined portion of the rotor core, includes a primary contacting portion and two primary non-contacting portions. The primary contacting portion contacts the corresponding predetermined portion of the rotor core at a circumferential location, which corresponds to the projection. The primary non-contacting portions do not contact the rotor core and are located on two circumferentially opposite sides, respectively, of the primary contacting portion.

公开(公告)号：US20150162789A1

公开(公告)日：2015-06-11

申请号：US14560871

申请日：2014-12-04

申请人： DENSO CORPORATION

发明人： Asuka TANAKA ,  Akihiro Kimura ,  Jirou Hayashi ,  Makoto Taniguchi

IPC分类号： H02K1/27 ,  H02K1/16

CPC分类号： H02K1/278 ,  H02K1/276 ,  H02K2213/03

摘要： Each permanent magnet provided in a rotor includes a projection that projects toward a corresponding predetermined portion of the rotor core. An inner peripheral surface of each permanent magnet, which is radially opposed to the corresponding predetermined portion of the rotor core, includes a primary contacting portion and two primary non-contacting portions. The primary contacting portion contacts the corresponding predetermined portion of the rotor core at a circumferential location, which corresponds to the projection. The primary non-contacting portions do not contact the rotor core and are located on two circumferentially opposite sides, respectively, of the primary contacting portion.

摘要翻译： 设置在转子中的每个永磁体包括朝向转子芯的对应的预定部分突出的突起。 每个永磁体的径向相对于转子芯的相应的预定部分的内周表面包括主接触部分和两个初级非接触部分。 初级接触部分在对应于突起的圆周位置处接触转子芯的相应的预定部分。 主非接触部分不接触转子芯并且分别位于主接触部分的两个周向相对的侧面上。