Fin Heat Sink with Improved Structure and Processing Method Thereof

Abstract

The invention relates to the technical field of heat sinks, in particular to a fin heat sink with an improved structure and a processing method thereof. The fin heat sink with the improved structure comprises a pedestal and a plurality of cooling fins, wherein roots of the cooling fins are connected with the pedestal and provided with clamping grooves the bottoms of which are opened; clamping pieces corresponding to the clamping grooves are extended out of the pedestal; the cooling fins are clamped and connected with the clamping pieces through the clamping grooves; and the plurality of the cooling fins are subjected to layered arrangement to form a cooling fin group. The clamping grooves at the roots of the cooling fins are easy to mold through a die; the clamping pieces extended out of the pedestal are simple and convenient to process; the clamping grooves are connected with the clamping pieces by means of clamping, so the connection between the clamping grooves and the clamping pieces is reliable; and the clamping process can be completed through a stamping die. Therefore, compared with the prior art, the fin heat sink with the improved structure and the processing method thereof, which are provided by the invention, overcome the technical prejudice and can greatly reduce the processes, reduce the production cost and improve the production efficiency.

1 . A fin heat sink with an improved structure, comprising a pedestal ( 1 ) and a plurality of cooling fins ( 2 ), wherein roots of the cooling fins ( 2 ) connected with the pedestal ( 1 ) and provided with clamping grooves ( 21 ) the bottoms of which being opened; clamping pieces ( 11 ) corresponding to the clamping grooves ( 21 ) extended out of the pedestal ( 1 ); the cooling fins ( 2 ) clamped and connected with the clamping pieces ( 11 ) through the clamping grooves ( 21 ); and the plurality of the cooling fins ( 2 ) subjected to layered arrangement to form a cooling fin group ( 3 ). 
     
     
         2 . The fin heat sink with the improved structure according to  claim 1 , wherein the clamping groove ( 21 ) comprises a clamping and connecting groove and a connecting groove which are communicated with each other; the connecting groove is close to the pedestal ( 1 ); and the maximum width of the clamping and connecting groove is more than the minimum width of the connecting groove. 
     
     
         3 . The fin heat sink with the improved structure according to  claim 2 , wherein one end of the clamping groove ( 21 ) close to the cooling fins ( 2 ) is rectangular, and the other end of the clamping groove ( 21 ) is circular or rectangular. 
     
     
         4 . The fin heat sink with the improved structure according to  claim 2 , wherein the clamping groove ( 21 ) is in the shape of a trapezoid, and one end of the clamping groove ( 21 ) close to the cooling fins ( 2 ) is a short bottom edge of the trapezoid. 
     
     
         5 . The fin heat sink with the improved structure according to  claim 1 , wherein the number of the clamping grooves ( 21 ) is at least two. 
     
     
         6 . The fin heat sink with the improved structure according to  claim 1 , wherein the number of the clamping grooves ( 21 ) is at least two; the clamping grooves ( 21 ) are in the shape of rectangles; and side faces of different clamping grooves ( 21 ) are nonparallel to each other. 
     
     
         7 . The fin heat sink with the improved structure according to any one of  claims 1  to  6 , wherein clamps ( 22 ) are extended out of one sides of the clamping grooves ( 21 ) and sleeved with the clamping pieces ( 11 ); and the height of the clamps ( 22 ) is equal to or less than the distance between adjacent cooling fins ( 2 ). 
     
     
         8 . The fin heat sink with the improved structure according to  claim 7 , wherein the fin heat with the improved structure is further provided with a heat pipe ( 4 ); and one end of the heat pipe ( 4 ) passes through the cooling fin group ( 3 ) and the other end of the heat pipe ( 4 ) is connected with the pedestal ( 1 ). 
     
     
         9 . The fin heat sink with the improved structure according to  claim 8 , wherein the cooling fins ( 2 ) are provided with bending parts ( 23 ) the bending width of which is equal to the distance between the adjacent cooling fins ( 2 ). 
     
     
         10 . The fin heat sink with the improved structure according to  claim 9 , wherein fastening pieces ( 24 ) sleeved with the heat pipe ( 4 ) are molded at joints of the cooling fins ( 2 ) and the heat pipe ( 4 ). 
     
     
         11 . A method for processing the fin heat sink, comprising the following steps of:
 (1) preparing a pedestal, in which the pedestal is connected with convex clamping pieces which are arranged on cooling end faces of cooling fins, and the clamping pieces are extended along straight lines parallel to the cooling end faces;   (2) stamping the cooling fins and preparing the cooling fins through a stamping die, in which clamping grooves the bottoms of which are opened are stamped and molded at roots of the cooling fins and clamped and connected with the clamping pieces of the pedestal; and   (3) performing assembly, in which the plurality of the cooling fins are clamped and connected with the clamping pieces through the clamping grooves in succession.   
     
     
         12 . The method for processing the fin heat sink according to  claim 11 , wherein the stamping die is a progressive die; the prepared pedestal is arranged inside a lower die of the progressive die; the extension direction of the clamping pieces is consistent with the stamping direction of a punch press; and the progressive die stamps down the stamped and molded cooling fins to enable the cooling fins to be sleeved with the clamping pieces through the clamping grooves. 
     
     
         13 . The method for processing the fin heat sink according to  claim 12 , wherein the fin heat sink comprises a heat pipe which is “U”-shaped; the heat pipe and the prepared pedestal are arranged inside the lower die of the progressive die together; one end of the heat pipe is vertical; and the cooling fins are sleeved with the heat pipe through the punch press. 
     
     
         14 . The method for processing the fin heat sink according to  claim 13 , wherein the pedestal is molded by a process of extruding, casting or cutting. 
     
     
         15 . The method for processing the fin heat sink according to  claim 11 , wherein the clamping pieces and the pedestal are integrated into a whole. 
     
     
         16 . The method for processing the fin heat sink according to  claim 11 , wherein the clamping pieces and the pedestal are separable; the pedestal is provided with grooves; and roots of the clamping pieces are connected with the pedestal through the grooves. 
     
     
         17 . The method for processing the fin heat sink according to  claim 11 , wherein the clamping grooves are provided with clamps through stamping molding; and the clamps are in tight fit with the clamping pieces. 
     
     
         18 . The method for processing the fin heat sink according to  claim 11 , wherein fastening pieces are stamped and molded in sleeved positions of the cooling fins and the heat pipe and sleeved with the heat pipe. 
     
     
         19 . The method for processing the fin heat sink according to any one of  claims 11  to  18 , wherein the cooling fins are provided with bending parts by stamping.