Packaging box

Abstract

The present invention relates to a packaging box, of which a cubic body can be assembled without the use of packaging tape, twine, or separate portable holder clips, wherein the cubic body, after being completely assembled, can be used in holding and easily transporting various kinds of heavy objects such as daily necessities, without the concern of the box being untied from a fastened state by heavy loads.

1 . A packaging box comprising:
 a quadrangular box main body; and   bottom forming parts each formed to extend from a lower end portion of the quadrangular box main body and bent inward to form a bottom,   wherein the bottom forming parts include a front side bottom plate and a rear side bottom plate that are formed to extend from a front side of the lower end portion of the quadrangular box main body and a rear side of the lower end portion, respectively, toward a lower portion of the quadrangular box main body to have ends touching each other when bent inward from the quadrangular box main body and that have a one-side slit and an other-side slit formed at one side and the other side, respectively, in a horizontal direction; and a one-side bottom plate and an other-side bottom plate that are formed to extend from one side of the lower end portion of the quadrangular box main body and the other side of the lower end portion, respectively, toward the lower portion of the quadrangular box main body to be bent inward from the quadrangular box main body and that have a front side cutting line and a rear side cutting line formed at a front side and a rear side, respectively, in the horizontal direction and a front side wing part and a rear side wing part respectively formed on a front side portion downward of the front side cutting line and a rear side portion downward of the rear side cutting line, and   in a process in which the front side bottom plate and the rear side bottom plate are each bent inward from the quadrangular box main body, and then the one-side bottom plate and the other-side bottom plate are bent inward from the quadrangular box main body, the front side wing part and the rear side wing part are secured inside the quadrangular box main body in a state in which the front side wing part and the rear side wing part pass through the one-side slit and the other-side slit, respectively.   
     
     
         2 . The packaging box of  claim 1 , wherein a left-right width of the one-side slit and a left-right width of the other-side slit of the front side bottom plate and the rear side bottom plate are the same as an up-down width of the front side wing part and an up-down width of the rear side wing part of the one-side bottom plate and the other-side bottom plate. 
     
     
         3 . The packaging box of  claim 1 , wherein:
 a one-side cutting line and an other-side cutting line, each formed of a first horizontal cutting line and a first vertical cutting line extending a predetermined length upward from the first horizontal cutting line from each of one side and the other side of the first horizontal cutting line, are formed at one side and the other side of the front side bottom plate and one side and the other side of the rear side bottom plate; and   as a portion of the front side bottom plate and a portion of the rear side bottom plate in a direction inward from the one-side cutting line and a direction inward from the other-side cutting line are folded inward from the quadrangular box main body, the one-side slit and the other-side slit are formed inside of the one-side cutting line and inside of the other-side cutting line, respectively.   
     
     
         4 . The packaging box of  claim 1 , wherein a perforated line extending in an up-down direction of the front side wing part and an up-down direction of the rear side wing part is formed at each of a rear side of the front side wing part and a front side of the rear side wing part. 
     
     
         5 . The packaging box of  claim 1 , wherein:
 an upper cutting line in a vertical direction and a lower cutting line in the vertical direction are formed at an upper portion of a front side of the front side wing part and a lower portion of the front side;   an upper securing wing and a lower securing wing that are foldable to be orthogonal to the front side wing part are formed at each of a portion of the front side wing part that is forward from the upper cutting line and a portion of the front side wing part that is forward from the lower cutting line; and   a through-hole through which the upper securing wing and the lower securing wing, which are in a folded state, pass is formed at a rear side of the rear side wing part.   
     
     
         6 . The packaging box of  claim 1 , wherein:
 an upper cutting line in a vertical direction and a lower cutting line in the vertical direction are formed at an upper portion of a front side of the rear side wing part and a lower portion of the front side;   an upper securing wing and a lower securing wing that are foldable to be orthogonal to the rear side wing part are formed at each of a portion of the rear side wing part that is rearward from the upper cutting line and a portion of the rear side wing part that is rearward from the lower cutting line; and   a through-hole through which the upper securing wing and the lower securing wing, which are in a folded state, pass is formed at a front side of the front side wing part.   
     
     
         7 . The packaging box of  claim 5 , wherein a perforated line extending in a left-right direction of the upper securing wing and a left-right direction of the lower securing wing is formed at a lower portion of the upper securing wing and an upper portion of the lower securing wing. 
     
     
         8 . The packaging box of  claim 5 , wherein:
 a rear side auxiliary cutting line, formed of a first vertical auxiliary cutting line and a first horizontal auxiliary cutting line extending a predetermined length forward from the first vertical auxiliary cutting line from each of an upper portion and a lower portion of the first vertical auxiliary cutting line, is formed at the rear side of the rear side wing part; and   as a portion of the rear side wing part that is in a direction inward from the rear side auxiliary cutting line is folded to be orthogonal to the rear side auxiliary cutting line, the through-hole is formed inside of the rear side auxiliary cutting line.   
     
     
         9 . The packaging box of  claim 6 , wherein:
 a front side auxiliary cutting line, formed of a first vertical auxiliary cutting line and a first horizontal auxiliary cutting line extending a predetermined length rearward from the first vertical auxiliary cutting line from each of an upper portion and a lower portion of the first vertical auxiliary cutting line, is formed at the front side of the front side wing part; and   as a portion of the front side wing part that is in a direction inward from the front side auxiliary cutting line is folded to be orthogonal to the front side auxiliary cutting line, the through-hole is formed inside of the front side auxiliary cutting line.   
     
     
         10 . The packaging box of  claim 1 , wherein:
 a through-hole is formed at a front side of the front side wing part;   a rear side auxiliary cutting line, formed of a first vertical auxiliary cutting line and a first horizontal auxiliary cutting line extending a predetermined length rearward from the first vertical auxiliary cutting line from each of an upper portion and a lower portion of the first vertical auxiliary cutting line, is formed at a rear side of the rear side wing part; and   a portion of the rear side wing part that is in a direction inward from the rear side auxiliary cutting line is secured after passing through the through-hole of the front side wing part and being caught in and fixed to the through-hole.   
     
     
         11 . The packaging box of  claim 1 , wherein:
 a through-hole is formed at a rear side of the rear side wing part;   a front side auxiliary cutting line, formed of a first vertical auxiliary cutting line and a first horizontal auxiliary cutting line extending a predetermined length forward from the first vertical auxiliary cutting line from each of an upper portion and a lower portion of the first vertical auxiliary cutting line, is formed at a front side of the front side wing part; and   a portion of the front side wing part that is in a direction inward from the front side auxiliary cutting line is secured after passing through the through-hole of the rear side wing part and being caught in and fixed to the through-hole.   
     
     
         12 . The packaging box of  claim 6 , wherein a perforated line extending in a left-right direction of the upper securing wing and a left-right direction of the lower securing wing is formed at a lower portion of the upper securing wing and an upper portion of the lower securing wing.