Patent ID: 6271611
Filing Date: 2001-08-07
Classification: F04D,H02K

Abstract:
In an axial flow fan motor in which, on the inner circumference of a bearing box provided in a motor housing in a unitary manner bearings are coupled to support a shaft and on the outer circumference of the bearing box a stator is fixed, the axial flow fan motor is characterized in that said motor housing is provided with a central projection into which an axial end of the bearing box is inserted, stepped portions are formed on the bearing box and the central projection for preventing the bearing box from being removed in an axial direction, the axial end of the bearing box to be inserted in the central projection is provided with slits and the outer circumference of the bearing box is adapted to be deformed elastically in the radial direction of the bearing box so that a snap coupling is formed between the bearing box and the central projection of the motor housing, a fixation member is press-fitted in the central projection and holds one of the bearings, and the bearing box is made of a resin having heat resistance.