Hub structure

Abstract

A hub structure includes an annular body and a flow guide unit. The annular body has a top end and a receiving space. The flow guide unit is disposed at the top end of the annular body. At least one raised section is formed on one face of the flow guide unit opposite to the receiving space. A motor set is disposed in the receiving space. When the motor set operates, the annular body and the flow guide unit are driven to rotate around the axis of a shaft rod. At this time, airflow is conducted through the raised section into the receiving space to dissipate the heat generated by the motor set. Accordingly, the temperature of the motor set can be effectively lowered to prolong the lifetime of the motor set.

1 . A hub structure comprising:
 an annular body having a top end; and   a flow guide unit disposed at the top end of the annular body, at least one raised section being formed on one face of the flow guide unit.   
     
     
         2 . The hub structure as claimed in  claim 1 , wherein at least one recessed section is formed on another face of the flow guide unit. 
     
     
         3 . The hub structure as claimed in  claim 1 , wherein the flow guide unit integrally connected with the top end of the annular body. 
     
     
         4 . The hub structure as claimed in  claim 2 , further comprising s a top section integrally connected with the top end of the annular body, the top section being formed with multiple through holes, the flow guide unit being disposed on the top section. 
     
     
         5 . The hub structure as claimed in  claim 3 , wherein the flow guide unit and the annular body are made by means of a measure selected from the group consisting of injection molding and casting. 
     
     
         6 . The hub structure as claimed in  claim 3 , wherein the flow guide unit and the annular body are made by means of pressing. 
     
     
         7 . The hub structure as claimed in  claim 3 , wherein the flow guide unit is formed with a central hole. 
     
     
         8 . The hub structure as claimed in  claim 1 , wherein the annular body has a receiving space, multiple coils and a control circuit being disposed in the receiving space, multiple electronic components being disposed on the control circuit. 
     
     
         9 . The hub structure as claimed in  claim 1 , wherein the annular body is made of metal material. 
     
     
         10 . The hub structure as claimed in  claim 1 , wherein the flow guide unit is made of metal material. 
     
     
         11 . The hub structure as claimed in  claim 4 , wherein the recessed section of the flow guide unit communicates with the through holes of the top section.