公开(公告)号：US11622486B2

公开(公告)日：2023-04-04

申请号：US16625263

申请日：2018-06-28

申请人： DENSO CORPORATION

发明人： Akihiro Otawara ,  Yuki Fujita ,  Yosuke Kanbe ,  Kenji Kani ,  Hiroyuki Okada ,  Yoshiaki Fukuta

IPC分类号： H02K15/00 ,  H02K5/04 ,  H02K11/38 ,  H02K7/116 ,  H05K13/04 ,  H02K15/14 ,  H05K3/30

摘要： A motor includes: a rotating shaft; a motor portion; a circuit board; a case having a circuit housing recess portion for housing the circuit board; and a cover made of a synthetic resin and sealing the opening portion of the circuit housing recess portion. The cover has an outer circumference rib and an inside rib. The outer circumference rib is located on the outer circumferential side from the opening end surface of the circuit housing recess portion and projects from the outer circumferential edge of the cover toward the front surface side of the cover and the rear surface side of the cover. The inside rib is located inside from the opening end surface and projects at least either on the front surface side of the cover or on the rear surface side of the cover.

公开(公告)号：US12126221B2

公开(公告)日：2024-10-22

申请号：US17547930

申请日：2021-12-10

申请人： DENSO CORPORATION

发明人： Kenji Kani ,  Kenta Gotou

IPC分类号： H02K1/28 ,  H02K1/2783 ,  H02K21/14

CPC分类号： H02K1/2783 ,  H02K1/28 ,  H02K21/14

摘要： A rotor includes a rotating shaft, a core and a Halbach array magnet. The Halbach array magnet has first magnet portions each having its magnetization direction oriented along a radial direction and second magnet portions each having its magnetization direction oriented along a circumferential direction. The first magnet portions and the second magnet portions are alternately arranged in the circumferential direction. The core has a shaft-fixed portion, a yoke portion and a plurality of connection portions. The connection portions are arranged in the circumferential direction with gaps formed therebetween. On an inner circumferential surface of the yoke portion, there are formed additional-function portions to extend radially inward from the inner circumferential surface of the yoke portion. Each of the additional-function portions is located radially inside a corresponding one of the second magnet portions and has an additional function in addition to a function of forming the magnetic path.