Patent ID: 8441781

Claim:
An electronic device comprising: a casing comprising a top plate and a bottom plate spaced from and facing the top plate; a fan bracket mounted on the bottom plate; and a fan module comprising a fan, a fan holder enclosing the fan therein, and two vibration dampening structures mounted on opposite top and bottom sides of the fan holder, the fan holder engaged in the fan bracket; wherein the fan holder comprises two sidewalls firmly contacting lateral sides of the fan, and two grooves are defined in opposite ends of one of the sidewalls; each vibration dampening structure comprises an abutting member sandwiched between the fan and the fan holder and a mounting member protruding from the abutting member, the mounting member comprises a neck and a mounting head, opposite ends of the neck connect the abutting member and the mounting head, the necks of the mounting members are received in the grooves of the sidewall, respectively, and the mounting head and the abutting member of each vibration dampening structure are located at opposite sides of the sidewall and abut opposite surfaces of the sidewall; and the vibration dampening structures protrude beyond the top and bottom sides of the fan holder and abut the top plate and the bottom plate of the casing, respectively.