公开(公告)号：US20180198326A1

公开(公告)日：2018-07-12

申请号：US15914310

申请日：2018-03-07

Applicant: MINEBEA CO., LTD.

Inventor： Akio ANDO ,  Hirotaka SATO ,  Toshiyuki NISHIKATA

IPC: H02K1/14 ,  H02K21/22 ,  H02K1/18 ,  H02K7/09

CPC classification number: H02K1/146 ,  H02K1/187 ,  H02K7/09 ,  H02K21/22 ,  H02K21/222

Abstract: A motor includes a rotor frame; a shaft; first and second rotor magnets that are coupled with the shaft, formed separately, and spaced apart in an axial direction of the shaft; a stator portion having a stator core, a winding around the stator core, and a plurality of first salient pole portions; a torque holding portion facing the rotor magnets in a radial direction, being arranged between the rotor frame and the stator portion in the axial direction of the shaft, and having a plurality of second salient pole portions; and a circuit board arranged, in the axial direction of the shaft, on a side of the stator portion opposite the rotor frame. An electronic component is arranged at the circuit board.

公开(公告)号：US20150084475A1

公开(公告)日：2015-03-26

申请号：US14479580

申请日：2014-09-08

Applicant: MINEBEA CO., LTD.

Inventor： Akio ANDO ,  Hirotaka SATO ,  Toshiyuki NISHIKATA

IPC: H02K1/14 ,  H02K1/27

CPC classification number: H02K1/146 ,  H02K1/187 ,  H02K7/09 ,  H02K21/22 ,  H02K21/222

Abstract: An outer rotor type brushless motor of the present invention comprises: a rotor portion having a rotor frame, a shaft, and a rotor magnet; a bearing housing; a stator portion facing the rotor magnet and having a stator core, a plurality of first salient pole portions extending toward the rotor magnet from the stator core, an insulation surrounding the first salient pole portion, and a winding around the first salient pole portion through the insulation; and a torque holding portion provided on an inner side of the outer circumference portion of the rotor frame and an outer circumference of the bearing housing, and having a plurality of second salient pole portions disposed coaxially with the stator core and extending toward the rotor magnet, where the first salient pole portions and the second salient pole portions are provided in different numbers.

Abstract translation: 本发明的外转子式无刷电动机包括：具有转子架，转轴和转子磁体的转子部分; 轴承座; 定子部分，其面向转子磁体并具有定子芯，从定子芯向着转子磁体延伸的多个第一凸极部分，围绕第一凸极部分的绝缘体，以及围绕第一凸极部分的绕组 绝缘; 以及转矩保持部，其设置在转子架的外周部的内侧和轴承壳体的外周，并且具有与定子铁芯同轴配置并朝向转子磁铁延伸的多个第二凸极部， 其中第一凸极部分和第二凸极部分设置成不同的数字。