Washing machine

Abstract

A washing machine having a rotor directly connected to a rotary shaft. The driving motor includes a stator mounted to an outer surface of a water tub, and a rotor disposed around the stator while being directly connected to the rotary shaft, which is connected to a rotary tub. An insertion hole is formed at a center of the rotor, and a plurality of fitting holes are formed around the insertion hole. At an end of the rotary shaft is formed an inserting protrusion, which corresponds to the insertion hole. The rotor is fixed to the rotary shaft by inserting the inserting protrusion through the insertion hole. To the rotor is attached a reinforcing member having a plurality of fitting protrusions, which vertically extend such that the fitting protrusions are fitted into the fitting holes of the rotor, respectively, such that the strength of the rotor is increased.

1 . A washing machine comprising: 
 a water tub;    a rotary tub disposed in the water tub;    a rotary shaft which is mounted to the rotary tub and extends through the water tub;    a rotor directly connected to an end of the rotary shaft; and    a reinforcing member attached to the rotor which increases the strength of the rotor.    
   
   
       2 . The washing machine according to  claim 1 , wherein the rotor has a polygonal insertion hole, and the rotary shaft has a polygonal inserting protrusion formed at the end thereof, the inserting protrusion of the rotary shaft being inserted through the insertion hole of the rotor.  
   
   
       3 . The washing machine according to  claim 2 , wherein the reinforcing member has a polygonal through-hole corresponding to the insertion hole of the rotor, the inserting protrusion of the rotary shaft being inserted through the through-hole of the reinforcing member.  
   
   
       4 . The washing machine according to  claim 2 , wherein the reinforcing member has a plurality of fitting protrusions which extend vertically from the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively, such that the reinforcing member is easily attached to the rotor.  
   
   
       5 . The washing machine according to  claim 1 , further comprising: a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from outside of the rotor.  
   
   
       6 . The washing machine according to  claim 5 , further comprising: a pad disposed between the reinforcing member and a head of the fixing bolt.  
   
   
       7 . The washing machine according to  claim 1 , further comprising: a stator mounted to an outer surface of the water tub while the stator is opposite to the rotor.  
   
   
       8 . A washing machine comprising: 
 a water tub; a rotary tub disposed in the water tub; a rotary shaft mounted to the rotary tub while extending through the water tub; and a driving motor disposed at an outside of the water tub to rotate the rotary shaft, the driving motor comprising, 
 a stator mounted to an outer surface of the water tub; a rotor disposed opposite to the stator; and a reinforcing member attached to the rotor to increase the strength of the rotor,  
 the rotor having an insertion hole formed in a shape to prevent the rotor from rotating relative to the rotary shaft, and  
 the rotary shaft having an inserting protrusion formed in a shape corresponding to that of the insertion hole, the inserting protrusion being inserted through the insertion hole, such that the rotary shaft is rotated along with the rotor.  
   
   
   
       9 . The washing machine according to  claim 8 , wherein the insertion hole of the rotor and the inserting protrusion of the rotary shaft are substantially formed in the shape of a rectangle.  
   
   
       10 . The washing machine according to  claim 8 , wherein the reinforcing member has a through-hole formed in a shape corresponding to the insertion hole of the rotor such that the reinforcing member is fixed to the rotary shaft.  
   
   
       11 . The washing machine according to  claim 10 , wherein the reinforcing member has a plurality of fitting protrusions protruded from an edge of the reinforcing member, and the rotor has a plurality of fitting holes, into which the fitting protrusions of the reinforcing member are fitted, respectively.  
   
   
       12 . The washing machine according to  claim 10 , further comprising a fixing bolt threadly coupled to the inserting protrusion of the rotary shaft through the reinforcing member and the rotor from outside of the rotor.  
   
   
       13 . The washing machine according to  claim 12 , further comprising a pad disposed between the reinforcing member and a head of the fixing bolt.