Hub structure for a heat-dissipation fan

Abstract

The present invention is a hub structure for a heat-dissipation fan, comprising a hub; and a plurality of locking parts. Therein, the hub includes a containing space. The locking parts are at the bottom of the containing space. Each locking part comprises a curved surface, a hook extended to the side wall of the containing space, and a leaning part at the end. Accordingly, by the locking parts, a metal sheath for a fan can be locked to a hub and is firmly fixed in the containing space to prevent from looseness or departure.

1 . A hub structure for a heat-dissipation fan, comprising: 
 a hub with a containing space;    a plurality of blades deposited on an outside surface of said hub; and    a plurality of locking parts deposited on an inner surface of said hub, each of which includes a hook extended out from an end of said locking part.    
   
   
       2 . The hub structure according to  claim 1 , wherein said plurality of locking parts is deposited on a bottom surface of said containing space.  
   
   
       3 . The hub structure according to  claim 1 , wherein said plurality of locking parts is deposited near a side wall of said containing space.  
   
   
       4 . The hub structure according to  claim 1 , wherein said hook of each said locking part is extended toward a side wall of said containing space.  
   
   
       5 . The hub structure according to  claim 1 , wherein said locking part includes a curved surface.  
   
   
       6 . The hub structure according to  claim 1 , wherein said end of each said locking part includes a leaning part.  
   
   
       7 . The hub structure according to  claim 1 , wherein a plurality of ribs is deposited at a bottom of said containing space.  
   
   
       8 . The hub structure according to  claim 1 , wherein each said locking part is deposited away from a side wall of said containing space.