Patent Publication Number: US-2010108669-A1

Title: Assembly box structure

Description:
FIELD OF THE INVENTION 
     The present invention relates to a box structure, and more particularly to an assembly box structure. 
     BACKGROUND OF THE INVENTION 
     According to the publication information, an assembly board is divided into two board body set, wherein the first board body has the embedding portion composed of multiple bending form and the upper and lower bonding boards. The second board body also has the connection portion composed of multiple bending forms and the upper and lower engaging boards. The assembly board has the drawbacks of time consuming and complicated during the processing procedure. 
     Further, the first board body and the second board body are thin plates. The assembly manner may result in larger intervals and not fasten although the embedding portion and the connection portion can be fitted to each other. 
     Accordingly, to overcome the foregoing shortcomings, the inventor(s) of the present invention based on years of experience in the related field to conduct extensive researches and experiments, and finally invented an assembly box structure. 
     SUMMARY OF THE INVENTION 
     The objective of the present invention is to provide an assembly box structure having easy assembly and high structure strength. 
     To achieve the foregoing objective, the assembly box structure disclosed by the present invention includes two first side boards and two second side boards interlaced and embedded to each other. Symmetric protruding portions are outwardly extended from two short sides of the first side boards. The protruding portion is composed of an extending section and a width expansion section. In addition, a cover sheet is outwardly extended from the tops of the protruding portions. Symmetric recession portions are inwardly caved at two sides of a longer edge of the second side board. The recession portion is composed of a cross-section channel and a width expansion slot. The depth of the cross-section channel is slightly smaller than the length of the extending section. The depth of the width expansion slot is greater than the length of the width expansion section. The cover sheet can seal the upper opening of the width expansion slot. Accordingly, the contact area can be reduced while assembling the protruding portion and the recession portion. The width expansion slot can be closely covered by the cover sheet to achieve fast insertion and effect of close overlaying. 
     Other features and advantages of the present invention and variations thereof will become apparent from the following description, drawings, and claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a decomposition chart of the structure according to a preferred embodiment of the present invention; 
         FIG. 2  is an assembly drawing of the structure according to a preferred embodiment of the present invention; 
         FIG. 3  is an A-A cross-sectional drawing according to  FIG. 2 ; 
         FIG. 4  is a B-B cross-sectional drawing according to  FIG. 2 ; 
         FIG. 5  is a reference diagram of using the structure according to a preferred embodiment of the present invention; 
         FIG. 6  is a decomposition chart of the structure according to a preferred embodiment II of the present invention; 
         FIG. 7  is an assembly drawing of the structure according to a preferred embodiment II of the present invention; and 
         FIG. 8  is a C-C cross-sectional drawing according to  FIG. 7 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The present invention will be apparent from the following detailed description, which proceeds with reference to the accompanying drawings, wherein the same references relate to the same elements. 
     Please referring  FIG. 1  to  FIG. 4 , schematic diagrams of an assembly box structure is shown according to a preferred embodiment of the present invention. The structure includes two first side boards  10  and two second side boards  20  having the same height and width. Both the first side boards and the second side boards are interlaced and embedded to each other. 
     Symmetric protruding portions  11  are outwardly extended from two short sides of the first side boards  11 . The protruding portion  11  is composed of an extending section  12  and a width expansion section  13 . Cover sheets  14  are outwardly extended from the tops of the protruding portions. A proper distance is remained between the bottom of the protruding portion  11  and the bottom of the first side board  10 . 
     Symmetric recession portions  21  are inwardly caved at two sides from one of longer edges of the second side board  20 . The recession portion  21  is composed of a cross-section channel  22  and a width expansion slot  23 . The depth of the cross-section channel  22  is slightly smaller than the length of the extending section  12  of the first side board  10 . The depth of the width expansion slot  23  is slightly greater than the length of the width expansion section  13  of the first side board  10 . The cover sheet  14  of the first side board  10  can seal the upper opening of the width expansion slot  23  completely. In addition, the bottom of the recession portion  21  is the non-penetrating shape. 
     By utilizing the above components, when the protruding portion  11  of the first side board  10  is embedded to the recession portion  21  of the second side board  20  in order, the operation of smoothly performing the embedding effect can be acquired during the initial stage. The cover sheet  14  then is used to completely and closely seal the opening of the width expansion slot  23  during the subsequent stage to achieve effects of rapid embedding and close fitting, thereby assembling the hollow box body  100 . 
     As shown in  FIG. 5 , a reference diagram of an assembly box structure is shown according to the present invention. A plurality of box bodies  100  are stacked up with each other to arrange the multiplayer type rack at will. 
     Moreover, referring  FIG. 6  to  FIG. 8 , schematic diagrams of the assembly box structure is shown according to a preferred embodiment II of the preset invention. In the box body  100  interlaced by two first side boards  10  and two second side boards  20 , side bottom boards  15  and  25  are extended from the inner bottoms of the first side board  10  and the second side board  20 . A plurality of through holes  151  and  251  is arranged to each side bottom board  15  and  25  based on the proper distance spaced at interval. A plurality of expansion cylinders  31  is further at the periphery of the bottom of a bottom board, and corresponds to the through holes  151  and  251  of each side bottom board  15  and  25 . Accordingly, the bottom sealed box  110  can be assembled. 
     Although the invention has been described with reference to specific embodiments, this description is not meant to be construed in a limiting sense. Various modifications of the disclosed embodiments, as well as alternative embodiments, will be apparent to persons skilled in the art. It is, therefore, contemplated that the appended claims will cover all modifications that fall within the true scope of the invention.