Patent ID: 7493937

Claim:
A mounting device for a heat sink to a heat generating electronic unit, comprising: a basis disposed around said heat generating electronic unit to allow said heat sink supportably placed thereon; and at least one operating body attached to said basis and reachable to said heat sink, said at least one operating body having: a resilient pivot member defining a pivot hole and a groove spaced from the pivot hole; a pole inserted through the pivot hole; and a spring having an end inserted into the groove, wherein the spring produces a torsion force directly acting on the pivot member to drive the pivot member to rotate about the pole, said at least one operating body is movable between a first position where a portion of said pivot member reaches to said heat sink and forces said heat sink moving toward said heat generating electronic unit, and a second position where said portion of said pivot member leaves away said heat sink, wherein the pole is supported by and parallel to said basis, and has two opposite ends bent to clasp the basis.