Packing box

Abstract

A packing box includes a plurality of side plates, an outer cover and an inner cover. The plurality of side plates is provided mutually and continuously through a first bending portion. The outer cover is linked to at least one of the side plates through a second bending portion crossing the first bending portion, and serves to block a packed product port formed by the side plates. The inner cover is linked to the outer cover through a third bending portion on an extension of the first bending portion, and is linked to any of the side plates being adjacent to the side plate provided with the outer cover through a fourth bending portion in the same direction as the second bending portion. The inner cover is bent inward through a fifth bending portion extended from a crossing position of the third bending portion and the fourth bending portion.

1 . A packing box comprising:
 a plurality of side plates that is provided mutually and continuously through a first bending portion;   an outer cover that is provided to be linked to at least one of the side plates through a second bending portion crossing the first bending portion, and that serves to block a packed product port formed by the side plates; and   an inner cover (i) that is disposed to be linked to the outer cover through a third bending portion on an extension of the first bending portion, (ii) that is disposed to be linked to any of the side plates which is adjacent to the side plate provided with the outer cover through a fourth bending portion in the same direction as the second bending portion, and (iii) that is bent inward through a fifth bending portion extended from a crossing position of the third bending portion and the fourth bending portion.   
     
     
         2 . The packing box according to  claim 1 ,
 wherein the inner cover is protruded into an internal space surrounded by the side plates when the outer cover is closed.   
     
     
         3 . The packing box according to  claim 1 ,
 wherein the second bending portion is positioned closer to a tip side of the outer cover than the fourth bending portion.   
     
     
         4 . The packing box according to  claim 1 ,
 wherein a hole portion is formed in the crossing position of the third bending portion and the fourth bending portion.   
     
     
         5 . The packing box according to  claim 1 ,
 wherein a sixth bending portion extended from a portion crossing an outer edge part of the inner cover is formed on the outer cover.   
     
     
         6 . The packing box according to  claim 1 ,
 wherein the hole portion is formed in the crossing position of the first bending portion and the second bending portion.   
     
     
         7 . The packing box according to  claim 1 ,
 wherein a difference between positions of the second bending portion and the forth bending portion along an outer cover tip direction is greater that a thickness of a member constituting the packing box.   
     
     
         8 . The packing box according to  claim 1 ,
 wherein the hole portion has a length along a direction of the third bending portion, and   the length of the hole is greater than a sum of a thickness of each member constituting the side plate, the outer cover and the inner cover of the packing box.   
     
     
         9 . The packing box according to  claim 1 ,
 wherein a length from a side of the hole formed on the second bending portion to the third bending portion is smaller than a length from a side of the forth bending portion to the third bending portion.