Patent ID: 8014149

Claim:
A fan module disposed in an electronic device having a mother board and a casing, the fan module comprising: a vane module having a hub and a plurality of vanes, wherein the vanes are disposed around the edge of the hub; a fan motor disposed in the hub; a circuit board connected to the fan motor for controlling the fan motor to rotate the vanes relative to an axis of the hub to generate an air flow; and a fan housing having a main body portion, a protruding portion and a fixing portion, wherein the protruding portion is located in a side of the main body portion, the vane module and the fan motor are disposed in the main body portion, the circuit board is disposed in the protruding portion, the fan housing is mounted on the mother board by the fixing portion, the protruding portion protrudes from the side of the main body portion's edge adjacent to the mother board and the protruding portion embeds into an opening of the mother board.