Fan assembly with snap-on cover

Abstract

An exemplary fan assembly includes a fan and a snap-on cover. The fan includes a bracket and an impeller disposed in the bracket. The cover includes a base body, a number of first clasps extending outwardly from a first side of the base body, a number of retaining clasps extending outwardly from an opposite second side of the base body, and an operation portion connecting the retaining clasps. The base body is disposed on the bracket, the first clasps clasp a first side of the bracket, the retaining portions clasp an opposite second side of the bracket, and the operation portion presses the bracket.

1 . A fan assembly comprising:
 a fan comprising a bracket and an impeller disposed in the bracket; and   a cover comprising a base body, a plurality of first clasps extending outwardly from a first side of the base body, a plurality of retaining clasps extending outwardly from an opposite second side of the base body, and an operation portion interconnecting the retaining clasps;   wherein the base body is disposed on the bracket, the first clasps clasp a first side of the bracket, the retaining portions clasp an opposite second side of the bracket, and the operation portion resiliently presses the bracket.   
     
     
         2 . The fan assembly of  claim 1 , wherein the bracket comprises a barrel, a first engaging plate extending horizontally and outwardly from a top edge of the barrel, and a second engaging plate extending horizontally and outwardly from a bottom edge of the barrel, the first clasps clasp a first side of the first engaging plate of the bracket, the retaining portions clasp an opposite second side of the first engaging plate of the bracket, and the operation portion presses a side of the barrel near the second engaging plate of the bracket. 
     
     
         3 . The fan assembly of  claim 2 , wherein the base body comprises an innermost ring, an outermost ring and an intermediate ring between the innermost ring and the outermost ring. 
     
     
         4 . The fan assembly of  claim 3 , wherein the cover comprises a generally V-shaped first connecting portion having a peak and two legs, the peak of the first connecting portion is attached to the innermost ring, and the two legs of the first connecting portion extend from the innermost ring to the outermost ring, connecting all of the rings along the way including the innermost ring, the intermediate ring and the outermost ring. 
     
     
         5 . The fan assembly of  claim 4 , wherein the plurality of first clasps comprises two U-shaped first clasps, which extend outwardly and downwardly from ends of the two legs of the first connecting portion, respectively, and an opening of each of the two first clasps faces toward the base body. 
     
     
         6 . The fan assembly of  claim 4 , wherein the cover further comprises a generally V-shaped second connecting portion positioned opposite to the V-shaped first connecting portion, the second connecting portion has a peak and two legs, the peak of the second connecting portion is attached to the innermost ring, and the two legs of the second connecting portion extend from the innermost ring to the outermost ring, connecting all of the rings along the way including the innermost ring, the intermediate ring and the outermost ring. 
     
     
         7 . The fan assembly of  claim 6 , wherein the plurality of retaining portions comprises two U-shaped retaining portions, which extend outwardly and downwardly from ends of the two legs of the second connecting portion, respectively, and an opening of each of the two retaining portions faces toward the base body. 
     
     
         8 . The fan assembly of  claim 7 , wherein the operation portion is generally U-shaped and comprises two connecting sections extending outwardly from the two retaining portions, and a pressing section interconnecting two ends of the two connecting sections, and the pressing section presses the side of the barrel near the second engaging plate of the bracket. 
     
     
         9 . The fan assembly of  claim 3 , wherein the cover comprises a plurality of second clasps each disposed between the group of first clasps and the group of retaining portions. 
     
     
         10 . The fan assembly of  claim 9 , wherein each of the second clasps comprises two parallel straight portions horizontally attached to the outermost ring, and a generally U-shaped extension portion extending downwardly from free ends of the two parallel straight portions. 
     
     
         11 . A fan assembly comprising:
 a fan comprising a bracket and an impeller disposed in the bracket; and   a cover comprising:
 a plurality of concentric rings; 
 a plurality of first connecting portions located on a first side of the concentric rings and welded on the concentric rings; 
 a plurality of second connecting portions located on an opposite second side of the concentric rings and welded on the concentric rings; 
 a plurality of first clasps extending outwardly from outer ends of the first connecting portions, respectively; 
 a plurality of retaining portions extending outwardly from outer ends of the second connecting portions, respectively; and 
 an operation portion interconnecting the outer ends of the retaining portions; 
 wherein the base body overlies the impeller, the first clasps clasp a first side of the bracket, the retaining portions clasp an opposite second side of the bracket, and the operation portion elastically presses the bracket. 
   
     
     
         12 . The fan assembly of  claim 11 , wherein the bracket comprises a barrel, a first engaging plate extending horizontally and outwardly from a top edge of the barrel, and a second engaging plate extending horizontally and outwardly from a bottom edge of the barrel, the first clasps clasp a first side of the first engaging plate of the bracket, the retaining portions clasp an opposite second side of the first engaging plate of the bracket, and the operation portion presses a side of the barrel near the second engaging plate of the bracket. 
     
     
         13 . The fan assembly of  claim 11 , wherein the first connecting portions and the second connect portions each extend from an innermost one of the concentric rings to an outermost one of the concentric rings. 
     
     
         14 . The fan assembly of  claim 13 , wherein each of the first clasps is generally U-shaped and extends outwardly and downwardly from the outer ends of the corresponding first connecting portions, and an opening of each of the first clasps faces toward the concentric rings. 
     
     
         15 . The fan assembly of  claim 14 , wherein each of the retaining portions is generally U-shaped and extends outwardly and downwardly from the outer ends of the corresponding second connecting portions, and an opening of each of the retaining portions faces toward the concentric rings. 
     
     
         16 . The fan assembly of  claim 12 , wherein the operation portion is generally U-shaped and comprises two connecting sections extending outwardly from the two retaining portions, and a pressing section interconnecting two ends of the two connecting sections, and the pressing section presses the side of the barrel near the second engaging plate of the bracket. 
     
     
         17 . A fan assembly comprising:
 a fan comprising a bracket and an impeller disposed in the bracket; and   a cover comprising a base body, a plurality of first clasps extending outwardly from a first side of the base body, a plurality of retaining clasps extending outwardly from an opposite second side of the base body, and an operation portion interconnecting the retaining clasps;   wherein the first clasps clasp a first side of the bracket, and the retaining portions are snapped onto an opposite second side of the bracket such that the operation portion resiliently presses the bracket.   
     
     
         18 . The fan assembly of  claim 17 , wherein the base body comprises an innermost ring, an outermost ring, a plurality of intermediate rings between the innermost ring and the outermost ring, and a plurality of connecting portions welded on the base body and extended along the way including the innermost ring, the intermediate rings and the outermost ring. 
     
     
         19 . The fan assembly of  claim 18 , wherein the plurality of first clasps are generally U-shaped and extend outwardly and downwardly from a first end of the connecting portions, and an opening of each of the first clasps faces the base body. 
     
     
         20 . The fan assembly of  claim 18 , wherein the plurality of retaining portions are generally U-shaped and extend outwardly and downwardly from an opposite second end of the connecting portions, and an opening of each of the retaining portions faces the base body.