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公开(公告)号：US09948151B2
公开(公告)日：2018-04-17
申请号：US14479580
申请日：2014-09-08
申请人： MINEBEA CO., LTD.
发明人： Akio Ando , Hirotaka Sato , Toshiyuki Nishikata
CPC分类号： H02K1/146 , H02K1/187 , H02K7/09 , H02K21/22 , H02K21/222
摘要： 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.
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公开(公告)号：US10734851B2
公开(公告)日：2020-08-04
申请号：US15914310
申请日：2018-03-07
申请人： MINEBEA CO., LTD.
发明人： Akio Ando , Hirotaka Sato , Toshiyuki Nishikata
摘要： 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.
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