Patent ID: 7800263

Claim:
A heat dissipating fan comprising: a fan housing including an outer frame portion having two ends, with an air inlet and an air outlet being respectively defined in the two ends of the outer frame portion, with a hollow motor casing being formed in and integral with the outer frame portion, with the hollow motor casing including first and second openings respectively in two ends thereof, with the first opening of the motor casing including a chamber; an inner-rotor-type motor mounted in the motor casing and including a rotor and a stator, with the rotor being rotatably received in the stator and including a shaft and a magnetic element, with the shaft extending beyond the motor casing, with the magnetic element being coupled with the shaft and facing the stator; at least one impeller coupled to the shaft and located outside the motor casing; a circuit board electrically connected to the stator; a positioning member mounted in the second opening, with the positioning member including a plurality of fixing portions fixing the circuit board, and with the circuit board and the stator being spaced from each other by the positioning member, with the positioning member including a compartment and a through-hole in communication with the compartment; a first bearing received in the chamber; and a second bearing received in the compartment, with an end of the shaft being extended through the first opening and rotatably coupled with the first bearing, and with another end of the shaft being extended through the through-hole and rotatably coupled with the second bearing.