Patent ID: 8681494

Claim:
A fan fastening device for fastening a heat dissipating fan having a small-thickness outer casing with a substantially square face, comprising: a chassis to which the heat dissipating fan is fastened to with screws; and a holder which is used for fastening the heat dissipating fan to the chassis, wherein the chassis includes by molding in one piece: a substantially square opening for housing the heat dissipating fan in the direction of thickness with fitting the substantially square face therein; a plurality of holding portions, provided on at least a pair of opposed edges of the opening, for supporting the housed heat dissipating fan in the peripheral portion at the bottom thereof with respective supporting faces which are parallel to the surface of the chassis; and a plurality of elastic members, provided on a pair of adjoining edges of the opening, for urging the heat dissipating fan supported by the holding portions in the directions of the opposed edges of the opening to position the fan, and wherein the holder includes by molding in one piece: a ventilating opening corresponding to a blower window of the housed heat dissipating fan; and a plurality of elastic portions, abutting against the peripheral portion on the top surface of the outer casing of the housed heat dissipating fan, for urging the heat dissipating fan perpendicularly with respect to the surface of the chassis and in the direction of the support faces of the holding portions.