Washing machine

Abstract

A washing machine not only may properly suppress vibration of an outer drum, but also may be easier to assemble due to a simple structure, thereby realizing reduction of the manufacturing cost. A washing machine including elastic supporting units for elastically supporting the outer drum to a main body includes: a plurality of extension springs arranged between the outer drum and the main body and capable of applying a counteracting force to the outer drum to enable the outer drum to return to an original position when a displacement of the outer drum is transmitted to the extension springs; and a displacement transmission unit capable of transmitting the displacement of the outer drum to the extension springs only when the displacement of the outer drum is larger than a specified value. The extension springs have a preset initial tension.

What is claimed is: 
     
         1 . A washing machine, comprising:
 a main body having an internal space;   an outer drum arranged in the internal space of the main body;   an inner drum arranged inside the outer drum and supported in a free rotation manner;   a motor disposed on the outer drum and capable of enabling the inner drum to rotate;   a plurality of elastic supporting units for elastically supporting the outer drum to the main body;   a plurality of extension springs arranged between the outer drum and the main body and capable of applying a counteracting force to the outer drum to enable the outer drum to return to an original position when a displacement of the outer drum is transmitted to the extension springs; and   a displacement transmission unit capable of transmitting the displacement of the outer drum to the extension springs only when the displacement of the outer drum is larger than a specified value,   wherein the extension springs have a preset initial tension.   
     
     
         2 . The washing machine according to  claim 1 , wherein
 the extension springs comprise at least one group of spring bodies arranged in a manner of being in axial symmetry about a rotating shaft of the inner drum;   each of the spring bodies is formed by combining a pair of spring elements; each of the spring elements comprises a spring main body having the preset initial tension and at least one flexible rope constituting the displacement transmission unit; and   one end of each of the spring elements of each of the spring bodies is mounted at a corner part of the main body, and the other end of each spring elements is fixed in a different approximate tangential direction of the outer drum.   
     
     
         3 . A washing machine, comprising:
 a main body having an internal space;   an outer drum arranged in the internal space of the main body;   an inner drum arranged inside the outer drum and supported in a free rotation manner;   a motor disposed on the outer drum and capable of enabling the inner drum to rotate;   a plurality of elastic supporting units for elastically supporting the outer drum to the main body;   a plurality of extension springs arranged between the outer drum and the main body and capable of applying a counteracting force to the outer drum to enable the outer drum to return to an original position when a displacement of the outer drum is transmitted to the extension springs;   a displacement transmission unit capable of transmitting the displacement of the outer drum to the extension springs only when the displacement of the outer drum is larger than a specified value; and   a plurality of attenuation apparatuses for attenuating the displacement transmitted by the displacement transmission unit,   
       wherein the extension springs have a preset initial tension. 
     
     
         4 . The washing machine according to  claim 3 , wherein
 the extension springs comprise at least one group of spring bodies arranged in a manner of being in axial symmetry about a rotating shaft of the inner drum;   each of the spring bodies is formed by combining a pair of spring elements; each of the spring elements comprises a spring main body having the preset initial tension and at least one flexible rope constituting each displacement transmission unit; and   one end of each of the spring elements of each of the spring bodies is mounted at a corner part of the main body, and the other end of the each of the spring elements is fixed in a different approximate tangential direction of the outer drum.