Patent ID: 8149574

Claim:
A one-piece cooling fan housing assembly for connecting to a heat sink, comprising: a boosting portion; and a connecting portion extended from the boosting portion and including a first part and a second part; the first and the second part being covered on and having sides surrounding the heat sink, wherein the heat sink has a generally open bottom that directs cooling and contacting radiating fins through the bottom and is provided with a plurality of retaining notches on the side faces of said radiating fins, and the second part being provided with at least one integral hooking section for quickly and firmly hooking to the plurality of retaining notches of the heat sink in a removable snap fit relation; wherein the first part includes at least one integral radially inward projected stopper configured such that when the fan housing assembly is attached to the heat sink, the at least one stopper provides a space between the fan and the heat sink such that in combination with the notches the heat sink is tightly captured between the hooked notches and the at least one inward projected stopper and the tight fit and spacing provided by such combination thereby reduces vibration in the system.