Packing box

Abstract

A packing box includes a bottom wall, first side walls, second side walls, and split walls. The bottom wall has a quadrangular shape having first side edges and second side edges. The first side walls respectively extend from the first side edges and have first opposite side edges that are respectively opposite to the first side edges. The second side walls respectively extend from the second side edges. The split walls respectively extend from the first opposite side edges of the first side walls and respectively have distal-end edges in directions in which the split walls extend. The distal-end edges of the split walls are configured to abut on each other such that the split walls form a ceiling wall that is opposite to the bottom wall. The split walls are respectively configured to be locked with the second side walls with a locking member.

1 . A packing box comprising:
 a bottom wall having a quadrangular shape and including first side edges that are opposite to each other and second side edges that are different from the first side edges and opposite to each other;   first side walls respectively extending from the first side edges of the bottom wall and being raised from the bottom wall, the first side walls having first opposite side edges that are respectively opposite to the first side edges;   second side walls respectively extending from the second side edges of the bottom wall and being raised from the bottom wall; and   split walls respectively extending from the first opposite side edges of the first side walls,   the split walls respectively having distal-end edges in directions in which the split walls extend, the distal-end edges of the split walls being configured to abut on each other such that the split walls form a ceiling wall that is opposite to the bottom wall, and   the split walls being respectively configured to be locked with the second side walls with a locking member.   
     
     
         2 . The packing box according to  claim 1 , wherein the locking member includes a locking piece extending from one of the split walls and the second side walls, and a locking hole formed in another one of the split walls and the second side walls and into which the locking piece is to be inserted. 
     
     
         3 . The packing box according to  claim 2 , wherein the locking piece is included in one of the split walls and the locking hole is formed in one of the second side walls. 
     
     
         4 . A packing box comprising:
 a bottom wall having a quadrangular shape and including first side edges that are opposite to each other and second side edges that are opposite to each other and different from the first side edges;   first side walls respectively extending from the first side edges of the bottom wall and being raised from the bottom wall;   second side walls respectively extending from the second side edges of the bottom wall and being raised from the bottom wall; and   a ceiling wall extending from a first opposite side edge of one of the first side walls to another one of the first side walls, the first opposite side edge being opposite to one of the first side edges, the ceiling wall being disposed to be opposite to the bottom wall, and   the ceiling wall being locked with the other one of the first side walls and the second side walls with a locking member.   
     
     
         5 . The packing box according to  claim 4 , wherein the locking member locking the ceiling wall with each of the second side walls includes
 a locking piece extending from one of the ceiling wall and the second side walls, and   a locking hole formed in the other of the ceiling wall and the second side walls and into which the locking piece is to be inserted.   
     
     
         6 . The packing box according to  claim 5 , wherein the locking piece is included in the ceiling wall and the locking hole is formed in one of the second side walls.