Refrigerator

Abstract

A refrigerator includes: an inner case forming a storage compartment; an outer case coupled to an outer side of the inner case to form an exterior; and an insulation between the inner case and the outer case, and configured to have an insulation thickness corresponding to a distance between the inner case and the outer case, where the inner case includes: a first inner case portion spaced apart from the outer case by a distance corresponding to a first insulation thickness, a second inner case portion spaced apart from the outer case by a distance corresponding to a second insulation thickness different from the first insulation thickness, and a boundary portion between the second inner case portion and the first inner case portion, and connected to a corner portion of the second inner case portion.

What is claimed is: 
     
         1 . A refrigerator, comprising:
 an inner case forming a storage compartment;   an outer case coupled to an outer side of the inner case to form an exterior; and   an insulation between the inner case and the outer case, and configured to have an insulation thickness corresponding to a distance between the inner case and the outer case,   wherein the inner case comprises:
 a first inner case portion spaced apart from the outer case by a distance corresponding to a first insulation thickness, 
 a second inner case portion spaced apart from the outer case by a distance corresponding to a second insulation thickness different from the first insulation thickness, 
 a boundary portion between the second inner case portion and the first inner case portion, and connected to a corner portion of the second inner case portion, 
 a plurality of first beads along the boundary portion on the corner portion of the second inner case portion or on a portion that is adjacent to the corner portion of the second inner case portion, and 
 a second bead along a direction corresponding to the plurality of first beads and on a portion of the first inner case portion that is adjacent to the plurality of first beads. 
   
     
     
         2 . The refrigerator of  claim 1 , wherein each of the plurality of first beads is on a portion of the corner portion of the second inner case portion that is adjacent to the boundary portion. 
     
     
         3 . The refrigerator of  claim 2 , wherein each of the plurality of first beads extends to a portion of the first inner case portion that is adjacent to the boundary portion. 
     
     
         4 . The refrigerator of  claim 3 , wherein each of the plurality of first beads extends from the portion of the corner portion of the second inner case portion that is adjacent to the boundary portion to a portion that is adjacent to the boundary portion of the first inner case portion. 
     
     
         5 . The refrigerator of  claim 1 , wherein the plurality of first beads are arranged in a direction perpendicular to a direction of stress capable of being generated by the insulation, the plurality of first beads being configured to disperse the stress. 
     
     
         6 . The refrigerator of  claim 1 , wherein each of the plurality of first beads protrudes outwardly from the inner case. 
     
     
         7 . The refrigerator of  claim 1 , wherein each of the plurality of first beads protrudes inwardly from the inner case. 
     
     
         8 . The refrigerator of  claim 1 , wherein the second bead is in an arc shape. 
     
     
         9 . The refrigerator of  claim 1 , wherein the second bead is spaced apart from an end of the plurality of first beads and corresponding to a portion of the plurality of first beads. 
     
     
         10 . The refrigerator of  claim 1 , wherein the second bead protrudes outwardly from the inner case. 
     
     
         11 . The refrigerator of  claim 1 , wherein the second bead protrudes inwardly from the inner case. 
     
     
         12 . The refrigerator of  claim 1 , wherein the second inner case portion protrudes inwardly from the inner case by the distance corresponding to the second insulation thickness, the second insulation thickness being greater than the first insulation thickness. 
     
     
         13 . The refrigerator of  claim 1 , wherein the first inner case portion and the second inner case portion are on a side wall of the inner case, and the second inner case portion protrudes further inwardly from the inner case than the first inner case portion.