公开(公告)号：US5945766A

公开(公告)日：1999-08-31

申请号：US783908

申请日：1997-01-16

申请人： Byungkyu Kim ,  Joon Kim ,  Boris Bazarov ,  Donghoon Kim

发明人： Byungkyu Kim ,  Joon Kim ,  Boris Bazarov ,  Donghoon Kim

IPC分类号： H02K29/00 ,  H02K3/04 ,  H02K11/04 ,  H02K16/00 ,  H02K21/24 ,  H02K29/08 ,  H02K16/02

CPC分类号： H02K21/24 ,  H02K11/33 ,  H02K16/00 ,  H02K29/08

摘要： A double rotor-type brushless direct-current motor includes first and second annular-shaped rotors each having a plurality of north and south-polar magnets which are alternately disposed at a predetermined distance; a rotating shaft connected to a central portion of the rotors thorough a bushing; upper and lower cases receiving and rotatably supporting opposite ends of the rotating shaft; an annular-shaped stator having a plurality of stator coils supported by a molding filler to apply electromagnetic force to the first and second rotors in an opposite direction to each other, the stator being mounted between the first and second rotors at a predetermined clearance; and a control printed circuit board for applying a driving current with respect to the stator, the control printed circuit board being mounted one of the upper and lower cases; wherein the upper and lower cases, the control printed circuit board, the first and second rotors have a plurality of ventilating holes for circulating air from the outer side of the motor to the inside of the motor.

摘要翻译： 双转子型无刷直流电动机包括第一和第二环形转子，每个转子具有以预定距离交替设置的多个北极和南极磁体; 旋转轴通过衬套连接到转子的中心部分; 容纳和旋转地支撑旋转轴的相对端的上壳体和下壳体; 环形定子，其具有多个定子线圈，所述多个定子线圈由模制填料支撑，以相反的方向对第一和第二转子施加电磁力，定子以预定的间隙安装在第一和第二转子之间; 以及控制印刷电路板，用于对所述定子施加驱动电流，所述控制印刷电路板安装在所述上壳体和所述下壳体中的一个上; 其特征在于，所述上壳体，所述控制印刷电路板，所述第一转子和所述第二转子具有多个用于将空气从所述电动机的外侧循环到所述电动机的内部的通气孔。