Patent ID: 8545193

Claim:
A fan apparatus for an air conditioner comprising: a fan; a shaft coupled to the fan; a rotor for transmission of driving force to the shaft for rotating the fan; a stator on an inside of the rotor to form a brushless direct current (BLDC) motor together with the rotor; a fan housing for enclosing the fan; a supporter secured to an upper surface of the fan housing, for supporting the stator such that the supporter allows a portion of the BLDC motor to be sunken in the fan housing; and a rotor bushing, the supporter including: a bearing housing portion having bearings mounted therein for supporting the shaft, supporter securing portions each extended outwardly in a radial direction from the bearing housing portion for securing the supporter to a top of the fan housing, and a stator securing portion formed so as to join the supporter securing portions to form a surface for securing the stator thereto, wherein the supporter is bent toward a top portion of the fan housing such that an end of each of the supporter securing portions are positioned above a stator fastening surface, for positioning at least the stator fastening surface of the supporter inside of the fan housing when the supporter is mounted on the fan housing, wherein the rotor bushing is located between the rotor and the shaft for transmission of driving force from the rotor to the fan, wherein the rotor bushing includes: a tooth portion at a center portion for inserting and engagement with the shaft, and a joining portion that extends in a radial direction from a circumference of the tooth portion for fastening to the rotor frame, wherein the rotor includes a rotor frame, the rotor frame includes a bottom portion of a disc shape having a hub portion having a pass through hole at a central portion for passing of fastening members and fasten the rotor to the shaft and positioning holes for positioning the rotor bushing in mounting the rotor bushing on the rotor formed around the pass through hole in the hub portion at regular intervals, and fastening holes in the joining portion along a circumferential direction in correspondence to the fastening holes in the hub portion of the rotor frame, and positioning projections formed as a unit with the rotor bushing between the fastening holes for automatic alignment of the fastening holes in the rotor frame and the rotor bushing respectively as the positioning projections are inserted in the positioning holes in the rotor.