Disclosed herein is a brushless DC motor that ensures stable driving of a shaft that rotates in a hollow of a bearing by using a bearing with a flat bottom surface and a tapered top. A contact height between an inner peripheral surface of the bearing and an outer peripheral surface of the shaft is larger than a contact height between an outer peripheral surface of the bearing and an inner peripheral surface of a bearing holder.
申请公布号
US2013278116(A1)
申请公布日期
2013.10.24
申请号
US201213532529
申请日期
2012.06.25
申请人
MIN JIN SUN;YOO YOUNG SUN;SAMSUNG ELECTRO-MECHANICS CO., LTD.