Patent ID: 9699884
Date: 2017-07-04
CPC Classifications: H01L,H05K

Claim:
1. A latch device for heat dissipation unit, which is applied to and mounted on a motherboard, the latch device for heat dissipation unit comprising: a first elastic abutment member disposed on an upper face of the motherboard and having a first protrusion block; a second elastic abutment member disposed on the upper face of the motherboard corresponding to the first elastic abutment member, the second elastic abutment member having a second protrusion block opposite to the first protrusion block; and a heat sink including multiple radiating fins, a first latch member and a second latch member, the radiating fins being disposed on one face of the heat sink, the first and second latch members being respectively disposed on two opposite sides of the heat sink, the first and second latch members being respectively latchable with the corresponding first and second protrusion blocks or unlatchable from the corresponding first and second protrusion blocks, whereby along with the latching or unlatching, the first and second elastic abutment members can be elastically deformed into abutment against or out of abutment with the other face of the heat sink, wherein the first elastic abutment member has a first abutment section and a pair of first elastic sections, the pair of first elastic sections extending from two ends of the first abutment section, a first fixed section extending from a free end of each first elastic section, the first fixed sections being fixed on the upper face of the motherboard, the first protrusion block being disposed on an upper end face of the first abutment section, the first protrusion block being formed with a first hook section, the first hook section being formed on outer circumference of the first protrusion block and protruding therefrom, the first latch member being correspondingly latchable with or unlatched from the first hook section.