Fan structure

Abstract

A fan structure includes a bearing and an impeller, wherein the bearing comprises a plurality of first lodge portions, and the impeller comprises a hub and a plurality of blades. The hub comprises a plurality of second lodge portions. The first lodge portions are cladded with the second lodge portions by means of injection molding.

What is claimed is: 
     
         1 . A fan structure at least including:
 a preformed bearing having a plurality of first lodge portions and an axial hole; and   an impeller having a hub and a plurality of blades in connection with the hub, wherein the hub comprises a plurality of second lodge portions, and the first lodge portions are cladded with the second lodge portions by means of injection molding.   
     
     
         2 . The fan structure in accordance with  claim 1 , wherein the first lodge portions include a plurality of first coupling protrusions and a plurality of second coupling protrusions, each of the first coupling protrusions and each of the second coupling protrusions are arranged alternately, each of the first coupling protrusions and each of the second coupling protrusions are spaced apart to form a separation slot. 
     
     
         3 . The fan structure in accordance with  claim 2 , wherein each of the first coupling protrusions comprises a first coupling slot, the second lodge portions include a plurality of connection protrusions and a plurality of first wadding portions in connection with the connection protrusions, each of the separation slots is filled with each of the connection protrusions, and each of the first coupling slots is filled with each of the first wadding portions. 
     
     
         4 . The fan structure in accordance with  claim 3 , wherein each of the first coupling protrusions further comprises a first projection located above the first coupling slot. 
     
     
         5 . The fan structure in accordance with  claim 2 , wherein each of the second coupling protrusions comprises a second coupling slot, the second lodge portions include a plurality of connection protrusions and a plurality of second wadding portions in connection with the connection protrusions, each of the separation slots is filled with each of the connection protrusions, and each of the second coupling slots is filled with each of the second wadding portions. 
     
     
         6 . The fan structure in accordance with  claim 5 , wherein each of the second coupling protrusions comprises a second projection located beneath the second coupling slot. 
     
     
         7 . The fan structure in accordance with  claim 1 , wherein the first lodge portions can be a plurality of slots, the second lodge portions can be a plurality of protrusions, and the slots are filled with the protrusions. 
     
     
         8 . The fan structure in accordance with  claim 1 , wherein the hub comprises an upper surface, and the bearing comprises a top surface coplanar with the upper surface of the hub. 
     
     
         9 . The fan structure in accordance with  claim 2 , wherein each of the first coupling protrusions comprises an exposing surface, and the hub comprises an upper surface coplanar with the exposing surface. 
     
     
         10 . The fan structure in accordance with  claim 2 , wherein the bearing comprises a ring surface, the first lodge portions are protruded to the ring surface. 
     
     
         11 . The fan structure in accordance with  claim 1 , wherein the bearing comprises a top terminal and a bottom terminal, the first lodge portions are adjacent to the top terminal. 
     
     
         12 . The fan structure in accordance with  claim 11 , wherein the bearing comprises a contact portion extendedly formed at the bottom terminal.