Patent ID: 8492939
Filing Date: 2013-07-23
Classification: F04D,F05D,H02K

Abstract:
1. A fan motor comprising: a case including a cylindrical bearing housing provided at a center thereof, and a base unit fixing the cylindrical bearing housing; a pair of bearings fitted into the cylindrical bearing housing; a stator which has a wound coil and a bottom portion to which a PC board including a motor driving circuit and a lead wire for supplying the motor driving circuit with electrical current is fixed; a shaft supported by the pair of bearings; a rotor which faces the stator and is fixed to the shaft, and which has an inner peripheral face to which a magnet is attached; and an impeller which is fixed to an outer peripheral portion of the rotor, and includes a plurality of blades, wherein the stator, the PC board and the lead wire are molded together using epoxy resin which has hardness of Shore D85 to D95 after curing to form an individual molded body which is a separate member from the case, and wherein the epoxy resin contains 20 to 30 mass % of bisphenol-A, 40 to 60 mass % of inorganic particles, and 20 to 30 mass % of acid anhydride.