Fan frame and mold for making the same

Abstract

A heat dissipation assembly includes a fan frame ( 11 ), a blade set ( 12 ) rotably mounted in the fan frame, a support member ( 30 ) abutting the fan frame, and a number of fasteners ( 20 ) mounting the fan frame on the support member. The fan frame defines an inner cavity receiving the blade set, a number of circular through apertures ( 18 ) for insertion of the fasteners respectively, and a number of slits ( 19 ) communicating with the through apertures to allow the through apertures to be resiliently expandable. For making the fan frame, a female mold ( 50 ) includes a number of posts ( 56 ) extending therefrom, and a connecting plate ( 58 ) connected between a main part of the female mold and each post.

1 . A heat dissipation assembly comprising: 
 a fan frame defining an inner cavity, a plurality of circular through apertures around the inner cavity, a plurality of slits communicating with the through apertures to allow the through apertures to be resiliently expandable;    a blade set rotatably mounted in the inner cavity;    a support member supporting the fan frame thereon; and    a plurality of fasteners extending through the through apertures respectively and engaging with the support member so as to mount the fan frame on the support member.    
   
   
       2 . The assembly as described in  claim 1 , wherein the fan frame has a square outer periphery with the through apertures defined at corners thereof respectively.  
   
   
       3 . The assembly as described in  claim 1 , wherein the slits are in communication with an exterior of the fan frame thereby making the through apertures open outwardly.  
   
   
       4 . The assembly as described in  claim 1 , wherein the fasteners are screws.  
   
   
       5 . The assembly as described in  claim 1 , wherein the support member is a fan holder that is secure to a heat sink.  
   
   
       6 . The assembly as described in  claim 1 , wherein the support member is a heat sink.  
   
   
       7 . The assembly as described in  claim 1 , wherein the support member is a wall of a computer case.  
   
   
       8 . A mold for making a fan frame, the mold comprising: 
 a male mold; and    a female mold comprising a main part having a bottom wall and a plurality of sidewalls extending from the bottom wall to cooperatively define an inner space therebetween for receiving the male mold therein, the male mold and the female mold cooperatively defining a gap resembling the shape of the fan frame therebetween, a plurality of posts having a same height extending perpendicularly from the bottom wall, a connecting plate connected between the main part and each of the posts.    
   
   
       9 . The mold as described in  claim 8 , wherein the connecting plate has a same height with the post.  
   
   
       10 . The mold as described in  claim 9 , wherein the connecting plate is connected to a junction of two adjacent sidewalls.  
   
   
       11 . The mold as described in  claim 8 , wherein the connecting plate is perpendicular to the bottom wall.  
   
   
       12 . A fan for heat dissipation, comprising: 
 a blade set; and    a fan frame receiving said blade set so as to keep said blade set operatable therein, said fan frame having a plurality of through apertures disposed around said blade set, each of said through apertures extending through said fan frame to expose to outside of said fan frame at two opposing ends thereof, and at least one slit formed with said each of said through apertures to allow said each of said through apertures communicating with outside of said fan frame from a face of said each of said through apertures other than said two opposing ends.    
   
   
       13 . The fan as described in  claim 12 , wherein said each of said through apertures is resiliently extendable along a direction perpendicular to an extending direction of said at least one slit.