Washing machine having dynamic vibration absorber

Abstract

A washing machine having a device for directly reducing vibration of an external structure serving as a direct factor for causing a user to feel vibration. The washing machine includes an external structure forming an external casing; a washing tub installed in the external structure; a driving device for driving the washing tub; a support device for supporting the washing tub; and dynamic vibration absorbers for directly reducing vibration transmitted to the external structure.

1 . A washing machine comprising: 
 an external structure forming an external casing;    a washing tub installed in the external structure;    a driving device for driving the washing tub;    a support device for supporting the washing tub; and    at least one dynamic vibration absorber for directly reducing vibration transmitted to the external structure.    
   
   
       2 . The washing machine as set forth in  claim 1 , 
 wherein the at least one dynamic vibration absorber is installed directly on the external structure.    
   
   
       3 . The washing machine as set forth in  claim 2 , 
 wherein the at least one dynamic vibration absorber comprises a plurality of dynamic vibration absorbers, with at least one of the dynamic vibration absorbers being installed at at least one position on the external structure.    
   
   
       4 . The washing machine as set forth in  claim 3 , 
 wherein the dynamic vibration absorbers are installed at one of an upper portion and a side portion of an inside of the external structure.    
   
   
       5 . The washing machine as set forth in  claim 1 , wherein the at least one dynamic vibration absorber includes: 
 a vibrating poise having a weight;    an elastic member having an elastic restoring member; and    a damping member for reducing vibration.    
   
   
       6 . The washing machine as set forth in  claim 1 , wherein the support device includes: 
 suspension springs for elastically supporting the washing tub; and    dampers for reducing vibration of the washing tub.