Packing box with cardboard walls

Abstract

A packing box with cardboard walls includes a pallet base, four wall assemblies, a top cover, a plurality of fasteners and five cardboard pieces. A horizontally extending female edge is provided on each of the four sides of the pallet base. The right and left sides of each wall assembly are provided with a male edge and a female edge to allow two neighboring wall assemblies to engage with each other. The upper and lower sides of each wall assembly are provided with a male edge, and the male edge on the lower side of each wall assembly may rest on and engage with the corresponding female edge of the pallet base. Each side of the top cover has a downwards extending wall edge and a horizontally extending top cover edge so that the top cover may rest on the four wall assemblies via the four top cover edges and the male edges and that the four wall edges may engage with the inner members of the four male edges of the wall assemblies. The cross section of the fasteners has a “ ” shape, and a fastening groove is provided on each of the fasteners. A threaded hole extends through one arm of the fastener and a bolt may be fitted into the hole. A convex tip is provided on the front tip of the bolt and two protrusions are provided on the other arm of the fastener. Last, the five cardboard pieces are fitted onto the four wall assemblies and the top cover.

1 . A packing box with cardboard walls, comprising: 
 a pallet base with a horizontally extending female edge provided on each four sides thereof;    four wall assemblies each with a male edge and a female edge provided at right and left sides thereof respectively to allow two neighboring wall assemblies to engage with each other, and with another male edge provided at upper and lower sides thereof to rest on and engage with the corresponding female edge of the pallet base;    a top cover with a downwards extending wall edge and a horizontally extending top cover edge at each side thereof so that the top cover rests on the four wall assemblies via four top cover edges and the male edges and that the four wall edges engage with the inner members of the four male edges of the wall assemblies;    a plurality of fasteners each having a fastening groove, a threaded hole extending through one arm of the fastener, and a bolt being fitted into the hole, a convex tip being provided on front tip of the bolt and two protrusions being provided on the other arm of the fastener; and    a plurality of cardboard pieces fitted onto the four wall assemblies and the top cover.    
   
   
       2 . The packing box with cardboard walls as in  claim 1 , wherein each of the cardboard pieces has a water-proof coating.  
   
   
       3 . The packing box with cardboard walls as in  claim 1 , wherein the cross section of the fasteners has a “ ” shape.