Patent ID: 7800274
Filing Date: 2010-09-21
Classification: H02K,Y10S

Abstract:
1. A stator, comprising: a bracket including a shaft bearing portion at a center thereof; a stator base including a flexible printed wiring board attached to the bracket outward of the shaft bearing portion, the stator base having a central through hole in which the shaft bearing portion is containable, the stator base further including at least one long hole provided radially outward of the central through hole; at least one magnetic detent torque part accommodated in the long hole so as not to protrude from the stator base upper surface; air-armature coils disposed on the stator base, the air-core armature coils being of a single-phase type; and a drive circuit member disposed on the stator base so as not to overlap with the air-core armature coils, said bracket having a recess at a section corresponding to a bottom of the drive circuit member, and the stator base being at least partly embedded in the recess in a thickness direction thereof.