Fin and Heat Sink

Abstract

A fin is penetrated through by a heat pipe. The fin includes a fin body and a plurality of positioning protrusions. The fin body has an accommodating hole penetrated by the heat pipe. The positioning protrusions are formed at the circumference of the accommodating hole for holding against the heat pipe, so that a gap is provided between the heat pipe and the circumference of the accommodating hole.

1 . A fin, which is cooperated with a heat pipe, comprising:
 a fin body having an accommodating hole, wherein the heat pipe penetrates through the accommodating hole; and   a plurality of positioning protrusions formed at the circumference of the accommodating hole and holding against the heat pipe, so that a gap is provided between the heat pipe and the circumference of the accommodating hole.   
   
   
       2 . The fin according to  claim 1 , wherein the accommodating hole is circular, elliptical, flat or polygonal. 
   
   
       3 . The fin according to  claim 1 , wherein a thermo-conductive medium is disposed on at least a portion of an outer surface of the heat pipe. 
   
   
       4 . The fin according to  claim 3 , wherein the thermo-conductive medium comprises a solder paste or a thermal adhesive. 
   
   
       5 . The fin according to  claim 3 , wherein the positioning protrusions are located on one side of the accommodating hole adjacent to the thermo-conductive medium. 
   
   
       6 . The fin according to  claim 1 , wherein the positioning protrusions are located on opposite sides of the accommodating hole. 
   
   
       7 . The fin according to  claim 1 , wherein the positioning protrusions are symmetrically disposed on the circumference of the accommodating hole. 
   
   
       8 . The fin according to  claim 1 , wherein each of the positioning protrusions comprises a protruding point or a rib. 
   
   
       9 . The fin according to  claim 1 , wherein the fin body comprises at least one hollow portion disposed adjacent to one of the positioning protrusions. 
   
   
       10 . A heat sink, comprising:
 a fins assembly comprising a plurality of fins connected with each other, wherein each of the fins comprises a fin body having an accommodating hole and a plurality of positioning protrusions formed at the circumference of the accommodating hole, and the accommodating holes of the fin bodies are aligned with each other; and   a heat pipe penetrating through the accommodating holes and held by the positioning protrusions, so that a gap is provided between the heat pipe and the circumferences of the accommodating holes.   
   
   
       11 . The heat sink according to  claim 10 , wherein the accommodating hole is circular, elliptical, flat or polygonal. 
   
   
       12 . The heat sink according to  claim 10 , wherein a thermo-conductive medium is disposed on at least a portion of an outer surface of the heat pipe. 
   
   
       13 . The heat sink according to  claim 12 , wherein the thermo-conductive medium comprises a solder paste or a thermal adhesive. 
   
   
       14 . The heat sink according to  claim 12 , wherein the positioning protrusions are located on one side of the accommodating hole adjacent to the thermo-conductive medium. 
   
   
       15 . The heat sink according to  claim 10 , wherein the positioning protrusions are located on opposite sides of the accommodating hole. 
   
   
       16 . The heat sink according to  claim 10 , wherein the positioning protrusions are symmetrically disposed on the circumference of the accommodating hole. 
   
   
       17 . The heat sink according to  claim 10 , wherein the positioning protrusions and the accommodating hole are integrally formed by punching. 
   
   
       18 . The heat sink according to  claim 10 , wherein each of the positioning protrusions comprises a protruding point or a rib. 
   
   
       19 . The heat sink according to  claim 10 , wherein the fin body comprises at least one hollow portion disposed adjacent to one of the positioning protrusions.