Damping structure for a rotor assembly of a motor

Abstract

A damping structure for a rotor assembly includes holes defined in a rotor and in a side board respectively and damping elements inserted into the holes of the rotor to be located between the rotor and the side board. Each damping element is received in a corresponding to one of the holes of the rotor and the side board so as to absorb vibration from the rotor to the axle of the rotor assembly.

1 . A damping structure for a rotor assembly having a rotor and an axle extending through the rotor, the damping structure comprising: 
 first holes adapted to be defined in the rotor;    a first side board provided on one side of the rotor and the first side board having second holes in communication with the first holes of the rotor;    damping elements sandwiched between the first side board and the rotor and each damping element having third holes in communication with the first holes of the rotor; and    positioning pins extending through the second holes of the first side board, the third holes of the damping elements and the first holes of the rotor to secure position of the damping elements between the side board and the rotor such that vibration caused by rotation of the rotor is effectively reduced.    
   
   
       2 . The damping structure as claimed in  claim 1 , wherein the damping elements include a plurality of rubber sleeves respectively inserted into a corresponding one of the first holes of the rotor.  
   
   
       3 . The damping structure as claimed in  claim 2  further comprising a second side board provided to sandwich the damping elements with the rotor and being opposite to the first side board in relation to the rotor.  
   
   
       4 . The damping structure as claimed in  claim 1  further comprising a rubber ring interconnecting the damping elements.  
   
   
       5 . The damping structure as claimed in  claim 2  further comprising a rubber ring interconnecting the damping elements.  
   
   
       6 . The damping structure as claimed in  claim 3  further comprising a rubber ring interconnecting the damping elements.  
   
   
       7 . The damping structure as claimed in  claim 3 , wherein a quantity of the first 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.