Refrigerator

Abstract

A refrigerator, with an inner casing forming a drawer type storage compartment and a drawer unit being received in and combined with the drawer type storage compartment, the refrigerator having: at least a pair of rail units provided between the inner casing and the drawer unit enabling the drawer unit to slide against the inner casing; a support part positioned at the inner casing, supporting the rail unit, and preventing the rail unit from moving upward and downward; and a combining part combining the rail unit with the support part, the combining part enabling the support part to move relative to the rail unit in a direction approximately perpendicular to a surface of the inner casing.

1 . A refrigerator, including an inner casing forming a drawer type storage compartment and a drawer unit being received in and combined with the drawer type storage compartment, the refrigerator comprising: 
 at least a pair of rail units provided between the inner casing and the drawer unit enabling the drawer unit to slide against the inner casing;    a support part positioned at the inner casing, supporting the rail unit, and preventing the rail unit from moving upward and downward; and    a combining part combining the rail unit with the support part, the combining part enabling the support part to move relative to the rail unit in a direction approximately perpendicular to a surface of the inner casing.    
   
   
       2 . The refrigerator according to  claim 1 , wherein: 
 the support part has a first combining hole positioned thereon;    the rail unit has a second combining hole positioned thereon to correspond to the first combining hole; and    the combining part comprises a screw passed through the second combining hole and combined with the first combining hole, the screw comprising 
 a body portion having a thread to combine with the first combining hole,  
 a head portion radially extended from an axial direction of the screw, and  
 a rail guide portion formed between the body portion and the screw head portion enabling the support part to move relative to the rail unit.  
   
   
   
       3 . The refrigerator according to  claim 2 , wherein the rail guide portion has a diameter that is larger than that of the body portion.  
   
   
       4 . The refrigerator according to  claim 3 , wherein the head portion comprises an inclined portion with a diameter that progressively increases from the rail guide portion; and 
 the second combining hole has a shape corresponding to a shape of the inclined portion.    
   
   
       5 . The refrigerator according to  claim 2 , wherein the length of the rail guide portion in the axial direction of the screw is approximately 1 to 3 mm.  
   
   
       6 . The refrigerator according to  claim 2 , wherein the rail unit comprises: 
 a guide rail combined with the support part; and    a slide rail combined with the guide rail and the drawer unit,    wherein the slide rail slides against the guide rail, and the second combining hole is positioned on the guide rail.    
   
   
       7 . The refrigerator according to  claim 6 , wherein the drawer unit comprises: 
 brackets combined with the pair of rail units, respectively; and    a coupling member connecting the brackets to maintain an interval between the rail units.    
   
   
       8 . The refrigerator according to  claim 1 , wherein the support part is a depression positioned on a surface of the inner casing to receive and support the rail unit, the depression being extended in a longitudinal direction of the rail unit.  
   
   
       9 . A refrigerator, including an inner casing forming a drawer type storage compartment, an outer casing forming an outer appearance of the drawer type storage compartment, a foam member disposed between the inner casing and the outer casing, and a drawer unit being received in and combined with the drawer type storage compartment, the refrigerator comprising: 
 at least a pair of rail units provided between the inner casing and the drawer unit enabling the drawer unit to slide against the inner casing;    rail brackets, provided at the inner casing and respectively supporting the rail units; and    a plurality of combining members, each having 
 a stable support section firmly connecting the rail bracket to the inner casing, and  
 a free support section movably supporting the rail unit in a direction approximately perpendicular to a surface of the inner casing, the free support section combining the rail bracket and the rail unit.  
   
   
   
       10 . The refrigerator according to  claim 9 , wherein the stable support section and the free support section form a single body as the combining member.  
   
   
       11 . The refrigerator according to  claim 9 , wherein the stable support section and the free support section are formed independently to be combined detachably with each other to form the combining member.  
   
   
       12 . The refrigerator according to  claim 9 , wherein: 
 the inner casing is provided with a depression portion formed on a surface thereof; and    the rail bracket is received in the depression portion.    
   
   
       13 . The refrigerator according to  claim 9 , wherein: 
 the rail bracket has a first combining hole;    the rail unit has a second combining hole corresponding to the first combining hole;    the stable support section of the combining member comprises a body portion that combines with the first combining hole;    the free support section of the combining member comprises a rail guide portion extended from the body portion and being received in the second combining hole enabling the inner casing, foam member, and the rail bracket to move relative to the rail unit when the foam member and inner casing contract;    the rail unit comprises 
 a guide rail combined with the rail bracket, and  
 a slide rail that is combined with the guide rail and the drawer unit and slides against the guide rail, the second combining hole being positioned on the guide rail.  
   
   
   
       14 . The refrigerator according to  claim 13 , wherein the rail bracket comprises: 
 a plate portion on which the first combining hole is formed; and    a wing portion extended from the plate portion in the direction approximately perpendicular to the surface of the inner casing, to support the rail unit.    
   
   
       15 . The refrigerator according to  claim 14 , wherein the wing portion is formed to support an upper side and a lower side of the rail unit.  
   
   
       16 . A refrigerator, comprising: 
 an inner casing;    a rail unit provided in the inner casing; and    a screw moveably combining the rail unit with the inner casing, the screw comprising 
 a body portion connected firmly to the inner casing,  
 a head portion having a diameter that is larger than that of the body portion, and  
 a rail guide portion disposed between the body portion and the head portion and having a diameter that is larger than that of the body portion and smaller than that of the head portion, to movably support the rail unit with respect to the inner casing.  
   
   
   
       17 . The refrigerator according to  claim 16 , wherein: 
 the inner casing has a first combining hole;    the rail unit has a second combining hole corresponding to the first combining hole;    the body portion has a thread to combine with the first combining hole; and    the rail guide portion is received in the second combining hole and enables relative movement of the inner casing with respect to the rail unit in a direction approximately perpendicular to a surface of the inner casing.    
   
   
       18 . The refrigerator according to  claim 17 , wherein: 
 the inner casing comprises a rail bracket to support the rail unit; and    the first combining hole is positioned on the rail bracket.    
   
   
       19 . The refrigerator according to  claim 18 , wherein: 
 the rail unit comprises 
 a guide rail connected to the rail bracket, and  
 a slide rail combined with the guide rail and a drawer unit that moves in and out of the refrigerator via the rail unit;  
   the slide rail slides against the guide rail; and    the second combining hole is positioned on the guide rail.    
   
   
       20 . A refrigerator, including an inner casing forming a drawer type storage compartment and a drawer unit being received in and combined with the drawer type storage compartment, the refrigerator comprising: 
 a pair of rail units disposed on opposing lateral sides of the drawer, each rail unit comprising 
 a guide rail having a plurality of holes, and  
 a slide rail fixedly connected to the drawer and slidably connected to the guide rail to move the drawer into and out of the refrigerator; and  
   a plurality of screws corresponding to the plurality of holes, each screw being inserted through a corresponding one of the holes, each screw comprising 
 a guide rail portion,  
 a body portion, axially extending from a first end of the guide rail portion, having a diameter smaller than that of the guide rail portion, and being fixedly connected to the inner casing, and  
 a head portion, axially extending from a second end of the guide rail portion opposite the first end, and having a diameter greater than that of the guide rail portion,  
   wherein each hole has a diameter greater than that of the guide rail portion but less than that of the head portion, enabling relative movement of the inner casing with respect to the guide rail in a direction approximately perpendicular to a surface of the inner casing when the inner casing contracts due to a temperature reduction of the refrigerator.