Patent ID: 7631402

Claim:
A retaining device for a heat sink, the retaining device comprising: a retaining piece having a distal end formed with a retaining hole, and a top end formed with two opposite tabs, wherein one side of the retaining piece is connected to a connection section; a retaining arm having an inverse L-shape, wherein a vertical surface at one side of the retaining arm is formed with a retaining hole, an end plane at the other side of the retaining arm is formed with through holes through which the tabs penetrate, and the plane is stopped by the connection section; a connection seat pressing against the plane of the retaining arm, wherein open slots are formed on two symmetrical sides of the connection seat and facing the tabs, the other two symmetrical sides of the connection seat are integrally formed with an accommodating slot, and the connection seat is formed with scarf joints corresponding to the tabs passing through the connection seat; and a control member having a disk and a handle connected to an outer periphery of the disk, wherein a thickness section of the disk is accommodated in the accommodating slot, the handle is exposed out of the connection seat, the disk is formed with a hollow and eccentric control slot corresponding to a top side of each of the tabs so that a pivot may slide in the control slot, the control member in the accommodating slot is rotated and the pivot is driven by the control member to cause a relative movement between the retaining piece and the retaining arm.