Assembly box structure

Abstract

An assembly box structure includes two first side boards and two second side boards. Symmetric protruding portions are outwardly extended from two short sides of the first side boards. Symmetric recession portions are inwardly caved at two sides of a longer edge of the second side board. The protruding portion of one side of the first side board is embedded with the recession portion of the second side board through the two first side boards interlaced and assembled to the two second side boards, thereby rapidly assembling the hollow box body. Side bottom boards are extended from the bottoms of the first and second side boards. A plurality of through holes is arranged according to the proper distance spaced at interval. A plurality of expansion cylinders is at the periphery of the bottom of a bottom board, and corresponds to the through holes of each side bottom board.

1 . An assembly box structure comprising: two first side boards having symmetric protruding portions outwardly extended from two short sides of the two first side boards, the protruding portion composed of an extending section and a width expansion section, and a cover sheet outwardly extended from a top of the protruding portion; two second side boards having symmetric recession portions inwardly caved at two sides from one of longer edges of the second side board, the recession portion for embedding with the protruding portion, the recession section composed of a cross-section channel and a width expansion slot, the depth of the cross-section channel being smaller than the length of the extending section of the first side board, the depth of the width expansion slot being slightly greater than the length of the width expansion section of the first side board, and the cover sheet of the first side board for sealing the upper opening of the width expansion slot completely to compose a hollow box body. 
   
   
       2 . The assembly box structure as claimed in  claim 1 , wherein a bottom of the recession portion is non-penetrating shape, and a proper distance is remained between the bottom of the protruding potion and a bottom of the first side board. 
   
   
       3 . The assembly box structure as claimed in  claim 1  further comprising: a plurality of expansion cylinders disposed at the periphery of the bottom of a bottom board, and side bottom boards extended from inner bottoms of the first side board and the second side board, and a plurality of through holes arranged to each side bottom board based on a proper distance spaced at interval to provide each expansion cylinder of the bottom board for buckling and embedding to assemble a bottom sealed box body.