Patent ID: 7583503
Filing Date: 2009-09-01
Classification: H01L

Abstract:
1. A thermal module comprising: a fixing rack being provided at an inner side with a plurality of stoppers and a plurality of projected portions located adjacent to and lower than the stoppers, so that the projected portions are horizontally offset from the stoppers with a height difference existed between them; and a heat sink being fitted in the fixing rack and provided along an outer periphery with a plurality of vertically extended grooves; wherein when the heat sink is fitted in the fixing rack with the vertical grooves located at positions corresponding to the projected portions on the fixing rack, the projected portions may separately slide into and engage with the vertical grooves for an upper surface of the heat sink to upward abut on the higher stoppers of the fixing rack; and, when the heat sink is fitted in the fixing rack with the vertical grooves horizontally offset from the projected portions on the fixing rack, the upper surface of the heat sink is upward abutted on the lower projected portions to increase a distance existed between the upper surface of the heat sink and the fixing rack due to the height difference between the stoppers and the projected portions.