Fan frame and heat dissipation fan having the same

Abstract

A vibration-proofed fan frame includes a housing and a base surrounded by the housing. A hollow tube is arranged on the base and has the rotary connection with an impeller of the heat dissipation fan. The base includes a disc and a plurality of ribs extending outwards from periphery of the disc. The fan frame further includes a buffer member within the structural interconnections between the disc and the housing. The buffer member includes first elements. The first elements are embedded in the disc. A heat dissipation fan having the fan frame described is also presented.

What is claimed is: 
     
       1. A fan frame, comprising:
 a housing; 
 a base surrounded by the housing, the base comprising:
 a disc; 
 a hollow tube mounted on the disc, the hollow tube having a rotary connection with an impeller of a heat dissipation fan; and 
 a plurality of ribs extending outwards from periphery of the disc, the ribs interconnecting the housing and the disc; and 
 
 a buffer member operable to absorb vibrations created by the heat dissipation fan during operation, the buffer member comprising:
 at least one first damping section embedded in the disc; and 
 at least one second damping section embedded in the ribs, wherein the second damping sections are positioned at connecting portions of the ribs which are connected to the disc. 
 
 
     
     
       2. The fan frame of  claim 1 , wherein the disc comprises an inner surface and an outer surface, the inner surface defines a hole at the center of the disc, the outer surface is periphery of the disc, the first damping section is located between the inner surface and the outer surface. 
     
     
       3. The fan frame of  claim 2 , wherein a distance between each first damping section and the outer surface is less than a distance between the corresponding first damping section and the inner surface. 
     
     
       4. The fan frame of  claim 3 , wherein a quantity of the first damping section is one, the first damping section is annular. 
     
     
       5. The fan frame of  claim 3 , wherein a quantity of the first damping section is two or more, each of the first damping sections is annular, the first damping sections are concentric and isolated from each other. 
     
     
       6. The fan frame of  claim 1 , wherein a quantity of the second damping section is two or more, one of the second damping sections is positioned on connecting portions of the ribs which are connected to the housing. 
     
     
       7. The fan frame of  claim 6 , wherein one of the second damping sections is positioned on central portions of the ribs which are between the housing and the disc. 
     
     
       8. The fan frame of  claim 7 , wherein parts of each of the second damping sections embedded in the ribs are located at one circumference. 
     
     
       9. The fan frame of  claim 1 , wherein the buffer member further comprises a third damping section embedded in the housing. 
     
     
       10. The fan frame of  claim 1 , wherein the buffer member is made of silicon resin, rubber, plastic or sponge. 
     
     
       11. A heat dissipation fan, comprising:
 a fan frame comprising:
 a housing; 
 a base surrounded by the housing, the base comprising:
 a disc; 
 a hollow tube formed at the center of the disc; and 
 a plurality of ribs extending outwards from periphery of the disc, the ribs interconnecting the housing and the disc; and 
 
 a buffer member operable to absorb vibrations created by the heat dissipation fan during operation, the buffer member comprising:
 at least one first damping section embedded in the disc; and 
 at least one second damping section embedded in the ribs, wherein the second damping sections are positioned at connecting portions of the ribs which are connected to the disc; and 
 
 
 an impeller received in the fan frame, the hollow tube having a rotary connection with the impeller. 
 
     
     
       12. The heat dissipation fan of  claim 11 , wherein the disc comprises an inner surface and an outer surface, the inner surface defines a hole at the center of the disc, the outer surface is periphery of the disc, the first damping section is located between the inner surface and the outer surface. 
     
     
       13. The fan frame of  claim 12 , wherein a distance between each first damping section and the outer surface is less than a distance between the corresponding first damping section and the inner surface. 
     
     
       14. The heat dissipation fan of  claim 1 , wherein a quantity of the second damping section is two or more, one of the second damping sections is positioned on connecting portions of the ribs which are connected to the housing. 
     
     
       15. The heat dissipation fan of  claim 14 , wherein one of the second damping sections is positioned on central portions of the ribs which are between the housing and the disc. 
     
     
       16. The heat dissipation fan of  claim 12 , wherein the buffer member further comprises a third damping section embedded in the housing.