Patent ID: 6270325
Filing Date: 2001-08-07
Classification: F04D

Abstract:
A magnetically assembled cooling fan comprising a fan assembly having a seat integrally formed on the inside of the fan assembly, a shaft extending out of the seat, an annular permanent magnet securely mounted within the fan assembly around the shaft, a stator assembly having a first conjugated plate, a second conjugated plate, a coil securely received between the first and the second conjugated plates, an insulating plate located under the second conjugated plate and a circuit board, means for rotating the fan assembly, a lubricating assembly engaged with the shaft to smooth the rotation of the shaft and a housing for receiving the fan assembly, the stator assembly, the rotation means and the lubricating assembly therein, wherein the improvement comprises:a metal plate adapted to be situated between the circuit board and the insulating plate and having a pair of diagonally formed winged sections adapted to extend outwardly of the insulating plate so as to be attracted by the annular permanent magnet to pull the fan assembly downward in relation to the housing.