Sintered bearing-equipped bldc motor for hair dryer

A brushless direct current (BLDC) motor for a hair dryer, comprising:

• a rotor housing (20) having a shaft hole (21), in which a shaft (22) is inserted, in a central portion thereof, wherein a permanent magnet (23) is disposed in the rotor housing (20), and a blower fan (10) for generating wind is coupled to an upper portion of the rotor housing (20);
• a rotor frame (30) having an inner circumference integrally coupled to an upper end of the shaft (22), and an outer circumference coupled to the rotor housing (20);
• a stator core (40) around which a coil (41) is wound, wherein the coil (41) generates torque by interacting with a magnetic field formed from the permanent magnet (23);
• a printed circuit board (PCB) (50) coupled to a lower portion of the stator core (40);
• a base bracket (70) coupled to the lower portion of the stator core (40) to support the stator core (40);
• and
• a bearing support (70′) disposed in a central portion of the base bracket (70), and supporting a bearing (60) for supporting the shaft (22),
• wherein the bearing (60) comprises a sintered bearing,
• a lower bearing cap (71) and a thrust washer (73) are disposed under the bearing support (70′) to control a reference position of the shaft (22),
• an upper bearing cap (72) is disposed above the bearing support (70′) to prevent discharge of oil from the bearing (60) and removal of the bearing (60), and
• a heat discharge hole (20a) is disposed in a top of the rotor housing (20) to discharge heat from the stator core (40).