Buckle and heat dissipation module having the same

Abstract

A heat dissipation module includes a fin stack, a fan and buckles. The fin stack includes fins arranged at interval and in parallel with each other, wherein a notch is formed at an edge of each fin and the notches of the fins are in alignment. The fan includes through holes. Each buckle includes an elastic connecting piece, a first cylinder and a second cylinder. An extension portion is formed at one end of the elastic connecting piece. A lateral side of the first cylinder connects the extension portion. The second cylinder vertically extends from the other end of the elastic connecting piece. The first cylinder is snapped on corresponding notches. The second cylinder is received in a corresponding through hole. Whereby, the first cylinder could be easily snapped on and removed from the notch.

What is claimed is: 
     
         1 . A heat dissipation module, comprising:
 a fin stack comprising a plurality of fins arranged at interval and in parallel with each other, wherein a notch is formed at an edge of each fin and notches of the fins are in alignment;   a fan comprising a plurality of through holes; and   a plurality of buckles;   wherein each buckle comprises an elastic connecting piece, a first cylinder and a second cylinder, an extension portion is formed at one end of the elastic connecting piece, a lateral side of the first cylinder connects the extension portion, the second cylinder vertically extends from the other end of the elastic connecting piece, the first cylinder is snapped on corresponding notches, and the second cylinder is received in a corresponding through hole.   
     
     
         2 . The heat dissipation module according to  claim 1 , wherein the first cylinder is formed with a plurality of flanges arranged at interval and in parallel with each other, and one fin is engaged between two adjacent flanges. 
     
     
         3 . The heat dissipation module according to  claim 1 , wherein an axis of the first cylinder and an axis of the second cylinder are perpendicular with each other. 
     
     
         4 . The heat dissipation module according to  claim 1 , wherein the extension portion is bent with respect to the elastic connecting piece. 
     
     
         5 . The heat dissipation module according to  claim 2 , wherein the extension portion is bent with respect to the elastic connecting piece. 
     
     
         6 . The heat dissipation module according to  claim 3 , wherein the extension portion is bent with respect to the elastic connecting piece. 
     
     
         7 . The heat dissipation module according to  claim 1 , wherein the second cylinder has a tapered portion to plug on the corresponding through hole. 
     
     
         8 . The heat dissipation module according to  claim 7 , wherein the tapered portion is in a cone shape, a taper direction of the tapered portion is the same as an extending direction of the second cylinder. 
     
     
         9 . The heat dissipation module according to  claim 1 , wherein the fan comprises a frame, and the through holes are formed on the frame. 
     
     
         10 . A buckle comprising:
 an elastic connecting pieces having an extension portion formed at one end;   a first cylinder having a lateral side connecting the extension portion; and   a second cylinder vertically extending from the other end of the elastic connecting piece.   
     
     
         11 . The buckle according to  claim 10 , wherein the second cylinder has a tapered portion and a taper direction of the tapered portion is the same as an extending direction of the second cylinder.