Patent ID: 7701719

Claim:
A thermal module comprising: a heat sink a heat pipe comprising an evaporator section adapted for thermally connecting with a heat generating component mounted on a circuit board, and a condenser section connected with the heat sink; and a fastening device for mounting the evaporator section of the heat pipe to the heat generating component, comprising: a base member configured for abutting the evaporator section of the heat pipe; a positioning pole disposed on and connecting with the base member, the positioning pole comprising a neck and a head formed at a free end thereof; and an elastic member comprising an abutting portion and two locking portions extending outwardly from two opposite ends of the abutting portion, the abutting portion of the elastic member defining a positioning hole therein, the neck of the positioning pole being freely and loosely received in the positioning hole of the abutting portion of the elastic member, and a maximal outer diameter of the head of the positioning pole exceeding a diameter of the fixing hole for preventing the elastic member from escaping from the positioning pole.