Heat dissipation device

Abstract

A heat dissipation device includes a heat sink, a rack, and a fan fixed to an end of the rack. The rack includes two frames. Each frame includes a sidewall and two end walls extending from opposite ends of the sidewall. The two frames form a receiving space receiving the heat sink, with each end wall of one of the frames engaging with a corresponding one of the end walls of the other one of the frames. The two frames are configured to be attached to the heat sink from opposite sides of the heat sink, with the end walls abutting opposite ends of the heat sink. The fan is fixed to two engaging corresponding end walls at one of the opposite ends of the sink via the end board.

1 . A heat dissipation device, comprising:
 a heat sink;   a rack comprising two frames, each frame comprising a sidewall and two end walls extending from opposite ends of the sidewall, the two frames forming a receiving space receiving the heat sink, with each end wall of one of the frames engaging with a corresponding one of the end walls of the other one of the frames; and   a fan comprising an end board;   wherein the two frames are configured to be attached to the heat sink from opposite sides of the heat sink, with the end walls abutting opposite ends of the heat sink, the fan is fixed to two engaging corresponding end walls at one of the opposite ends of the sink via the end board.   
     
     
         2 . The heat dissipation device of  claim 1 , wherein each frame further comprises a top surface extending from a top side of the sidewall of each frame and abutting the top surface of the heat sink, the top surface comprises two extending pieces, a protrusion extends from one of the extending piece, a fixing portion extends from a distal end the other extending piece for engaging with the protrusion of the other frame. 
     
     
         3 . The heat dissipation device of  claim 2 , wherein each end wall comprises a connection piece extending from the corresponding end of the sidewall of the corresponding frame, and two fixing pieces extending from opposite ends of the connection piece, a pin extends from a distal end of one of the fixing pieces, a through hole is defined in a distal end of the other fixing piece for receiving the pin of the other frame. 
     
     
         4 . The heat dissipation device of  claim 3 , further comprising a plurality of fixing members for mounting the fan to the end walls on the end of the rack, wherein the end board comprise a plurality of through holes, each fixing member comprises a base, a shaft extending from the base and a blocking portion formed on the circumference of the post, two fixing holes in alignment with each other are defined in the fixing pieces of each end wall, the shafts and blocking portions of the fixing members extend out through corresponding fixing holes of an end of the rack and corresponding through holes of the fan. 
     
     
         5 . The heat dissipation device of  claim 4 , wherein the fixing members are made of elastic material. 
     
     
         6 . The heat dissipation device of  claim 1 , wherein a bottom surface extends from a bottom side of the sidewall of each frame and abuts against the bottom of the heat sink.