Patent ID: 6713907
Filing Date: 2004-03-30
Classification: F04D,H02K

Abstract:
A blower, comprising:a bearing disposed at the center of a casing of an approximately cylindrical shape; a shaft supported by the bearing; a motor yoke which is mounted on the shaft and has an impeller at an outer periphery thereof and a permanent magnet at an inner periphery thereof; a stator core having a stator wire wound around and disposed inside of the permanent magnet; and a circuit board mounting an electronic circuit for supplying a predetermined amount of electric current to the stator wire and closely disposed to the stator wire and the stator core, wherein a case portion is closely disposed to said stator wire and said stator core, and said circuit board is housed within said case portion, and wherein said case portion further comprises: a motor base integrally formed with said casing, and a lid member made of an aluminum die-cast integrally formed with a bearing support member and connected to said motor base in such a manner as to cover said motor base and protect the circuit board.