Patent ID: 8143756

Claim:
A cooling fan with quick assembling structure, comprising: a base having a bearing cup, at least one axially extended channel extending a full length of the bearing cup from a top to a bottom formed on an outer wall surface of the bearing cup, and at least one stop portion formed at an upper end of the bearing cup communicating with the at least one channel and consisting of a recess and a projection; a motor winding support being mounted to a top of the bearing cup, and having a downward extended central wall and a top board; the downward extended central wall being fitted on and around the upper end of the bearing cup, and the top board touching the upper end of the bearing cup; and the central wall being provided on an inner wall surface with at least one radially inward extended stopper for engaging with the at least one stop portion on the bearing cup; and a blade hub being mounted atop the motor winding support and including a rotary shaft extended through the motor winding support into the bearing cup.