Damping structure for a rotor assembly of a motor

Abstract

A damping structure for a rotor assembly includes holes adapted to be defined in an outer periphery of the inner rotor and in an inner periphery of the outer rotor respectively and damping elements inserted into the gap between the inner rotor and the outer rotor. Each damping element is received in a corresponding to one of the holes of the inner rotor and the outer rotor so as to absorb vibration from the outer rotor.

1 . A damping structure for a rotor assembly having an inner rotor and an outer rotor incorporated with an axle extending through the inner rotor and the outer rotor, the damping structure comprising: 
 a gap adapted to be defined between the inner rotor and the outer rotor;    holes adapted to be defined in an outer periphery of the inner rotor and in an inner periphery of the outer rotor respectively; and    damping elements inserted into the gap and each received in a corresponding one of the holes of the inner rotor and the outer rotor so as to absorb vibration from the outer rotor.    
   
   
       2 . The damping structure as claimed in  claim 1 , wherein the damping elements include a plurality of damping blocks.  
   
   
       3 . The damping structure as claimed in  claim 1 , wherein the damping elements include a rubber ring with apertures to correspond to the holes of the inner rotor and the outer rotor respectively and damping pins respectively inserted into a corresponding one of the apertures and the holes of the inner rotor and the outer rotor.  
   
   
       4 . The damping structure as claimed in  claim 3 , wherein the damping pin has a diameter larger than a diameter of the corresponding aperture such that insertion of the damping pins into the apertures expands dimension of the apertures and a damping effect is provided between the inner rotor and the outer rotor.  
   
   
       5 . The damping structure as claimed in  claim 3 , wherein shape of the hole is circular.  
   
   
       6 . The damping structure as claimed in  claim 3 , wherein shape of the hole is rectangular.  
   
   
       7 . The damping structure as claimed in  claim 3 , wherein a quantity of the holes is between 2˜60.  
   
   
       8 . The damping structure as claimed in  claim 4 , wherein a quantity of the holes is between 2˜60.  
   
   
       9 . The damping structure as claimed in  claim 5 , wherein a quantity of the holes is between 2˜60.  
   
   
       10 . The damping structure as claimed in  claim 6 , wherein a quantity of the holes is between 2˜60.