Patent ID: 8479804

Claim:
A heat dissipation device comprising: a fan comprising a plurality of fixing cylinders; a heat sink comprising a supporting board; and a plurality of first fasteners fixing the fan to the heat sink, each of the first fasteners comprising a screwing pole, a first elastic member and a second elastic member encircling the screwing pole, and a fastening cylinder engaging with the screwing pole; wherein the screwing pole comprises a head, a shaft extending coaxially downwardly from the head, and a post extending coaxially downwardly from the shaft; wherein for each of the first fasteners, the screwing pole extends through a corresponding fixing cylinder of the fan, the first elastic member is compressed between the head and the corresponding fixing cylinder, the second elastic member is compressed between the corresponding fixing cylinder and the fastening cylinder, and the post protrudes down from the fastening cylinder and is engaged with the supporting board; wherein a baffle wall protrudes inwardly from an inner circumference of each fixing cylinder; wherein the first elastic member is compressed between the head and the baffle wall of the corresponding fixing cylinder; wherein the fastening cylinder comprises a tube and a collar protruding inwardly from an inner circumference of the tube; and wherein the second elastic member is compressed between the baffle wall of the corresponding fixing cylinder and the collar of the fastening cylinder.