Heat-dissipation structure for motor

Abstract

A heat-dissipation structure for a motor. The heat-dissipation structure comprises a shaft, a seat and a rotator. The rotator coupled to the seat by the shaft comprises a housing and a cover. The housing comprises an inner side connected to the shaft and a bottom comprising at least one through hole. The cover is connected to an exterior of the bottom of the housing and a distance is formed between the cover and the housing, so that the cover prevents objects from entering the through hole.

1 . A heat-dissipation structure for a motor, comprising: 
 a shaft;    a seat; and    a rotator coupled to the seat by the shaft, comprising: 
 a housing connected to the shaft and comprising at least one through hole; and  
 a cover covering the housing and positioned apart from the housing by a distance, so that the cover prevents an object from entering the through hole.  
   
   
   
       2 . The heat-dissipation structure of the motor as claimed in  claim 1 , wherein a heat generated in the rotator is expelled to an exterior of the housing from the through hole via the distance as the rotator is rotated.  
   
   
       3 . The heat-dissipation structure of the motor as claimed in  claim 1  further comprising at least one guiding blade for connecting the cover to the housing.  
   
   
       4 . The heat-dissipation structure of the motor as claimed in  claim 3  further comprising a plurality of guiding blades radially arranged inside an inner surface of the cover.  
   
   
       5 . The heat-dissipation structure of the motor as claimed in  claim 4 , wherein at least one through hole is formed between any two adjacent guiding blades.  
   
   
       6 . The heat-dissipation structure of the motor as claimed in  claim 1  further comprising at least one bar used for connecting the cover to the housing.  
   
   
       7 . The heat-dissipation structure of the motor as claimed in  claim 3 , wherein the housing is integrally formed with the cover and the guiding blade as a single piece.  
   
   
       8 . The heat-dissipation structure of the motor as claimed in  claim 3 , wherein the housing comprises a first part and a second part connected to the first part, and an inner side of the first part is connected to the shaft, and at least one through hole is formed on the first part, and the second part is connected to the cover via the guiding blade, and a distance is formed between the cover and the second part.  
   
   
       9 . The heat-dissipation structure of the motor as claimed in  claim 1 , wherein the heat-dissipation structure further comprises an impeller surrounding the rotator, so that the impeller is rotated with the rotator.  
   
   
       10 . The heat-dissipation structure of the motor as claimed in  claim 1 , wherein the heat-dissipation structure further comprises an impeller connecting to the rotator, so that the impeller is rotated with the rotator.  
   
   
       11 . The heat-dissipation structure of the motor as claimed in  claim 1 , wherein the impeller comprises a centrifugal impeller.  
   
   
       12 . The heat-dissipation structure of the motor as claimed in  claim 10 , wherein the impeller comprises an axial-flow impeller.  
   
   
       13 . The heat-dissipation structure of the motor as claimed in  claim 12 , wherein the fan structure further comprises a frame enclosing the impeller.  
   
   
       14 . The heat-dissipation structure of the motor as claimed in  claim 1 , wherein the housing is substantially cylindrical.  
   
   
       15 . A heat-dissipation structure for a motor, comprising: 
 a shaft;    a seat; and    a rotator coupled to the seat by the shaft, comprising: 
 a housing comprising at least one through hole;  
 a cover connecting to the shaft and covering the housing, positioned apart from the housing by a distance, so that the cover prevents an object from entering the through hole; and  
 at least one guiding blade for connecting the cover to the housing.  
   
   
   
       16 . The heat-dissipation structure of the motor as claimed in  claim 15 , wherein a heat generated in the rotator is expelled to an exterior of the housing from the through hole via the distance as the rotator is rotated.  
   
   
       17 . The heat-dissipation structure of the motor as claimed in  claim 15  further comprising a plurality of guiding blades radially arranged inside an inner surface of the cover.  
   
   
       18 . The heat-dissipation structure of the motor as claimed in  claim 15 , wherein at least one through hole is formed between any two adjacent guiding blades.  
   
   
       19 . The heat-dissipation structure of the motor as claimed in  claim 15  further comprising at least one bar used for connecting the cover to the housing.  
   
   
       20 . The heat-dissipation structure of the motor as claimed in  claim 15 , wherein the housing is integrally formed with the cover and the guiding blade as a single piece.