Support structure of a cooling fan

Abstract

A support structure of a cooling fan includes a base and a tube. The base has a raised section perpendicularly extending from the base and defining a first opening with a first inner diameter. A reception section is formed between the base and the raised section and has a first end and a second end connected with the raised section and base respectively. A second opening is formed between the first and second ends in communication with the first opening and has a second inner diameter equal to the first inner diameter and a third inner diameter larger than the second inner diameter. The tube is fitted in the first and second openings and has a first flange and a second flange mated with the raised section and reception section respectively. The second flange has a third end and a fourth end corresponding to the first and second ends respectively.

1 . A support structure of a cooling fan, comprising:
 a base having a raised section perpendicularly extending from a surface of the base, the raised section having a free end defining a first opening having a first inner diameter, a reception section being formed between the base and the raised section, the reception section having a first end connected with the raised section and a second end connected with the base, a second opening being formed between the first end and the second end in communication with the first opening, the second opening having a second inner diameter equal to the first inner diameter and a third inner diameter larger than the second inner diameter; and   a tube correspondingly fitted in the first opening and the second opening, the tube having a first flange and a second flange, which are disposed around the tube, the first flange being mated with the raised section, the second flange being mated with the reception section, the second flange having a third end corresponding to the first end and a fourth end corresponding to the second end.   
     
     
         2 . The support structure of the cooling fan as claimed in  claim 1 , wherein the first flange is continuously annularly disposed around the tube. 
     
     
         3 . The support structure of the cooling fan as claimed in  claim 1 , wherein the first flange is discontinuously annularly disposed around the tube. 
     
     
         4 . The support structure of the cooling fan as claimed in  claim 3 , wherein the first flange has multiple first stopper blocks defining therebetween at least one first space. 
     
     
         5 . The support structure of the cooling fan as claimed in  claim 1 , wherein the second flange is continuously annularly disposed around the tube. 
     
     
         6 . The support structure of the cooling fan as claimed in  claim 1 , wherein the second flange is discontinuously annularly disposed around the tube. 
     
     
         7 . The support structure of the cooling fan as claimed in  claim 6 , wherein the second flange has multiple second stopper blocks defining therebetween at least one second space. 
     
     
         8 . The support structure of the cooling fan as claimed in  claim 1 , wherein the raised section is continuously annularly disposed on the base. 
     
     
         9 . The support structure of the cooling fan as claimed in  claim 1 , wherein the raised section is discontinuously annularly disposed on the base. 
     
     
         10 . The support structure of the cooling fan as claimed in  claim 9 , wherein the raised section has multiple extending arms defining therebetween at least one third space.