Self-closing packaging box

Abstract

The present disclosure discloses a self-closing packaging box. When one end of a box body needs to be sealed, each of a first inner lining board, a second inner lining board, and a third inner lining board cover the one end of the box body, then one or more first connectors are changed to a folded position and inserted into the box body through one or more first insertion holes, so that a first board finally covers the one end of the box body, and finally the one or more first connectors are automatically unfolded to be in an unfolded position to be clamped to the one or more first insertion holes to perform a self-closing function.

What is claimed is: 
     
         1 . A self-closing packaging box, comprising:
 a box body,   a first box cover, and   a second box cover, wherein:
 the first box cover and the second box cover respectively cover two ends of the box body, 
 the box body comprises a first side board, a second side board, a third side board, and a fourth side board, which are sequentially connected, 
 the first box cover comprises a first board, a first inner lining board, a second inner lining board, and a third inner lining board, which are respectively connected to a first end of the first side board, a first end of the second side board, a first end of the third side board, and a first end of the fourth side board, 
 the first board is disposed with one or more first connectors, 
 the one or more first connectors are configured to be changed between an unfolded position and a folded position, 
 at least one of the first inner lining board, the second inner lining board, or the third inner lining board comprises one or more first insertion holes configured to be matched with the one or more first connectors when the one or more first connectors are in the folded position, and 
 when a first end of the two ends of the box body is to be sealed:
 each of the first inner lining board, the second inner lining board, and the third inner lining board are configured to cover the first end of the box body, 
 the one or more first connectors are then configured to be changed to the folded position and inserted into the box body through the one or more first insertion holes so that the first board covers the first end of the box body, and 
 the one or more first connectors are automatically unfolded to the unfolded position to be clamped to the one or more first insertion holes to perform a self-closing function. 
 
   
     
     
         2 . The self-closing packaging box according to  claim 1 , wherein:
 the one or more first connectors are two first connectors,   the two first connectors are respectively disposed on a left side and a right side of the first board,   the one or more first insertion holes are two first insertion holes,   a first of the two first insertion holes is disposed between the first inner lining board and the first side board,   a second of the two first insertion holes is disposed between the third inner lining board and the fourth side board,   two first space-providing grooves are respectively disposed on a left end and right end of the second inner lining board, and   the two first space-providing grooves respectively correspond to the two first insertion holes.   
     
     
         3 . The self-closing packaging box according to  claim 1 , wherein:
 the one or more first connectors is a first connector,   the first connector is disposed on a top edge of the first board,   the one or more first insertion holes is a first insertion hole,   the first insertion hole is disposed between the second inner lining board and the third side board,   a first of two first space-providing grooves is disposed between the first inner lining board and the second side board,   a second of the two first space-providing grooves is disposed between the third inner lining board and the fourth side board, and   when the two first space-providing grooves are disposed opposite to each other, the two first space-providing grooves each correspond to the first insertion hole.   
     
     
         4 . The self-closing packaging box according to  claim 1 , wherein:
 each of the one or more first connectors comprises a first connector body and a first folding portion fixedly connected to a side of the first connector body,   each of the one or more first insertion holes is L-shaped and has a long side section and a short side section, and   when the one or more first connectors are in the folded position:
 the first connector body and the first folding portion define an L-shaped structure, 
 the long side section of a corresponding one of the one or more first insertion holes corresponds to the first connector body, and 
 a short side section of a corresponding one of the one or more first insertion holes corresponds to the first folding portion. 
   
     
     
         5 . The self-closing packaging box according to  claim 4 , wherein:
 a width of the short side section of each of the one or more first insertion holes is shorter than a width of the first folding portion when the first folding portion is unfolded.   
     
     
         6 . The self-closing packaging box according to  claim 1 , wherein:
 the one or more first connectors have a shape of a cube, a cuboid, a sphere, a triangle, a trapezoid, or a combination of these shapes.   
     
     
         7 . The self-closing packaging box according to  claim 1 , wherein:
 one or more unlocking holes are disposed on at least one of the first side board, the second side board, the third side board, or the fourth side board,   the number of the one or more unlocking holes is the same as at least one of the number of the one or more first connectors or the number of the one or more first insertion holes, and   the one or more unlocking holes respectively correspond to the one or more first insertion holes.   
     
     
         8 . The self-closing packaging box according to  claim 7 , wherein:
 the one or more unlocking holes are disposed with a connecting piece, and   the one or more unlocking holes and the connecting piece are connected by a point-breaking structure.   
     
     
         9 . The self-closing packaging box according to  claim 1 , wherein:
 the second box cover comprises a second board, a sixth inner lining board, a seventh inner lining board, and an eighth inner lining board, which are respectively connected to a second end of the third side board, a second end of the fourth side board, a second end of the first side board, and a second end of the second side board,   the second board is disposed with one or more second connectors,   the one or more second connectors are configured to be changed between the unfolded position and the folded position,   at least one of the sixth inner lining board, the seventh inner lining board, or the eighth inner lining board comprises one or more second insertion holes configured to be matched with the one or more second connectors when the one or more second connectors are in the folded position, and   when a second end of the two ends of the box body is to be sealed:
 each of the sixth inner lining board, the seventh inner lining board, and the eighth inner lining board are configured to cover the second end of the box body, 
 the one or more second connectors are then configured to be changed to the folded position and inserted into the box body through the one or more second insertion holes so that the second board covers the second end of the box body, and 
 the one or more second connectors are automatically unfolded to the unfolded position to be clamped to the one or more second insertion holes to perform the self-closing function. 
   
     
     
         10 . The self-closing packaging box according to  claim 1 , wherein:
 the one or more first connectors is a first connector,   the first connector is disposed on a top edge of the first board,   the one or more first insertion holes is a first insertion hole,   the first insertion hole is disposed on the second inner lining board,   a sum of widths of the first inner lining board and the third inner lining board is shorter than a length of the third side board, and   a space is defined between the first inner lining board and the third inner lining board and corresponds to the first insertion hole.   
     
     
         11 . The self-closing packaging box according to  claim 10 , wherein:
 the first connector comprises a first connector body and a first folding portion connected to a side of the first connector body,   the first insertion hole is linear-shaped, and   when the first connector is in the folded position, the first connector body and the first folding portion define a linear-shaped structure.   
     
     
         12 . The self-closing packaging box according to  claim 11 , wherein:
 the first connector body is fixedly connected to the top edge of the first board, and   the first folding portion is not connected to the first board to define a free end.   
     
     
         13 . The self-closing packaging box according to  claim 4 , wherein:
 the first connector body is fixedly connected to the first board, and   the first folding portion is not connected to the first board to define a free end.   
     
     
         14 . A self-closing packaging box, comprising:
 a box body,   a first box cover, and   a second box cover, wherein:
 the first box cover and the second box cover respectively cover two ends of 
 the box body, the box body comprises a first side board, a second side board, a third side board, and a fourth side board, which are sequentially connected, 
 the first box cover comprises a first board, a first inner lining board, a second inner lining board, and a third inner lining board, which are respectively connected to a first end of the first side board, a first end of the second side board, a first end of the third side board, and a first end of the fourth side board, 
 the first board is disposed with one or more first connectors, 
 the one or more first connectors are configured to be changed between an unfolded position and a folded position, 
 at least one of the second side board, the third side board, or the fourth side board comprises one or more first insertion holes configured to be matched with the one or more first connectors when the one or more first connectors are in the folded position, and 
 when a first end of the two ends of the box body is to be sealed:
 each of the first inner lining board, the second inner lining board, and the third inner lining board are configured to cover the first end of the box body, 
 the one or more first connectors are then configured to be changed to the folded position and inserted into the box body through the one or more first insertion holes so that the first board covers the first end of the box body, and 
 the one or more first connectors are automatically unfolded to the unfolded position to be clamped to the one or more first insertion holes to perform a self-closing function. 
 
   
     
     
         15 . The self-closing packaging box according to  claim 2 , wherein:
 each of the two first connectors comprises a first connector body and a first folding portion fixedly connected to a side of the first connector body,   each of the two first insertion holes is L-shaped and has a long side section and a short side section, and   when the two first connectors are in the folded position:
 the first connector body and the first folding portion define an L-shaped structure, 
 the long side section of a corresponding one of the one or more first insertion holes corresponds to the first connector body, and 
 a short side section of a corresponding one of the one or more first insertion holes corresponds to the first folding portion. 
   
     
     
         16 . The self-closing packaging box according to  claim 3 , wherein:
 the first connector comprises a first connector body and a first folding portion fixedly connected to a side of the first connector body,   the first insertion hole is L-shaped and has a long side section and a short side section, and   when the first connector is in the folded position:
 the first connector body and the first folding portion define an L-shaped structure, 
 the long side section of the first insertion hole corresponds to the first connector body, and 
 a short side section of the first insertion hole corresponds to the first folding portion. 
   
     
     
         17 . The self-closing packaging box according to  claim 15 , wherein:
 a width of the short side section of each of the two first insertion holes is shorter than a width of the first folding portion when the first folding portion is unfolded.   
     
     
         18 . The self-closing packaging box according to  claim 16 , wherein:
 a width of the short side section of the first insertion hole is shorter than a width of the first folding portion when the first folding portion is unfolded.   
     
     
         19 . The self-closing packaging box according to  claim 15 , wherein:
 the first connector body is fixedly connected to the first board, and   the first folding portion is not connected to the first board to define a free end.   
     
     
         20 . The self-closing packaging box according to  claim 16 , wherein:
 the first connector body is fixedly connected to the first board, and   the first folding portion is not connected to the first board to define a free end.