JP4280109B2 - Assembly box - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an assembly box that is assembled by folding paperboard.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a rectangular parallelepiped packaging box having a pair of first side plates and a pair of second side plates, a pair formed on the side edges of a pair of connecting pieces that are connected to the left and right side edges of both first side plates. There is known an assembly box in which the outer surfaces of the insertion pieces are overlapped with each other and inserted into the cut portions formed in the second side plates, respectively (for example, see Patent Document 1).
[0003]
In such an assembly box, a crosspiece connected to the upper edge of the second side plate is bent through a crease line so as to face the bottom plate of the assembly box. At this time, since the crosspiece is supported by the insertion piece, it is possible to provide an assembly box with improved stacking strength and easy assembly.
[0004]
However, in the shape of the conventional assembly box, the insertion piece projects into the assembly box. Therefore, when the article is stored in the assembly box, the insertion piece may become an obstacle and a useless space may be generated.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 03-84717 (page 11, FIG. 1)
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of the above background, and an object of the present invention is to provide an assembly box having no projecting portion inside while maintaining ease of assembly and stacking strength.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an assembly box of the present invention includes a pair of first side plates provided continuously with the front and rear side edges of a rectangular bottom plate, and a pair of second side plates provided continuously with the left and right side edges of the bottom plate. Each of the first side plates is erected through a fold line, and is connected to the left and right side edges of each first side plate, and is connected to a connecting piece having a width substantially equal to a quarter width of the second side plate in the front-rear direction. Folded through the crease line so as to overlap the outer surface of each second side plate, and fold inwardly the insertion piece having approximately the same width as the connection piece connected to the side edge of each connection piece through the crease line. Each insertion piece is inserted into a cut portion formed over the entire length in the height direction of each second side plate at a position matching the side edge of each connection piece of each second side plate, and each insertion piece inserted In a state where each of the second side plates is overlaid on the inner surface of each second side plate, a protruding piece portion formed so as to protrude downward at the lower edge tip portion of each insertion piece Locking is inserted into the insertion hole which is formed in contact with the fold line between the side plates.
[0008]
Then, the first crosspiece connected to the upper edge of each first side plate is bent to face the bottom plate via the crease line, and the second crosspiece provided to the upper edge of each second side plate is folded. Folded so as to face the bottom plate through the line of sight, the first crosspiece is connected to the end holes on both sides of the second crosspiece to the locking holes formed so as to contact the crease line between the first crosspiece and the first side plate The locking piece is inserted and locked.
[0009]
According to such a configuration, since the protruding piece portion is inserted into the insertion hole, and the inserting piece is arranged to be folded inside the second side plate, there is nothing protruding inside the assembly box, Goods can be stored by effectively utilizing the space without waste.
[0010]
Moreover, since the upper edge of the insertion piece supports the bottom surface of the second crosspiece, the longer the width of the insertion piece, the higher the stacking strength of the assembly box. Here, considering only the stacking strength, the closer to the left and right side edges of the second side plate, the longer the width of the insertion piece in the front-rear direction, the longer the width of the insertion piece. Heavy strength can be improved. However, considering the ease of assembly, the closer the notches are to the left and right side edges of the second side plate, the shorter the front-rear width of the connecting piece and the longer the front-rear width of the insert piece. , It is difficult to insert the insertion piece into the notch, and the assembly box is difficult to assemble.
[0011]
Based on these facts, in the assembly box of the present invention, the width of the connecting piece in the front-rear direction is set to be substantially equal to one-fourth of the width in the front-rear direction of the second side plate. The cut portion is formed at the position of the two side plates, that is, at a position separated from the side edge of the second side plate by a distance substantially equal to a quarter width of the width of the second side plate in the front-rear direction. For this reason, as described above, the insertion piece is folded inside the second side plate to maintain the space for storing the assembly box widely, while maintaining the ease of insertion of the insertion piece into the notch, Stack strength can also be maintained.
[0012]
In addition, in order to increase the longitudinal width of the insertion piece supporting the second side plate and further improve the stacking strength of the assembly box, the side edges of the insertion pieces inserted into the same second side plate abut each other. It is preferable to do so.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a partially cutaway perspective view of the assembly box of the present embodiment, FIG. 2 is a development view of the assembly box of the present embodiment, and FIGS. 3 and 4 are explanatory diagrams showing the assembly process of the present embodiment. is there.
[0014]
As shown in FIG. 1, the outer shape of the assembly box 1 of this embodiment is a substantially rectangular parallelepiped, and is formed by punching a packaging board such as cardboard into the shape shown in FIG.
[0015]
As shown in FIG. 2, a pair of first side plates 3 are connected to the front and rear side edges of the rectangular bottom plate 2 via a fold line a, and a pair of first side plates 3 are connected to the left and right side edges of the bottom plate 2. Two side plates 4 are connected to each other via a crease line b. An insertion hole 5 is formed at the center of the left and right side ends of the bottom plate 2 so as to be in contact with the crease line b.
[0016]
In addition, a connecting piece 6 is connected to each of the left and right side edges of each first side plate 3 via a crease line c, and an insertion piece 7 is connected to each connecting piece 6 via a crease line d. Has been. Both the connecting piece 6 and the insertion piece 7 are formed to have a width in the left-right direction (front-rear direction in an upright state) substantially equal to a quarter width of the front-rear direction width of the second side plate 4. Further, a substantially U-shaped notch 8 is formed at the leading edge of the insertion piece 7, and the inner edge (the lower edge in the standing state) of the insertion piece 7 has an inner side ( A projecting piece 9 is formed projecting downward (downward in a standing state).
[0017]
The 1st crosspiece 10 is continuously provided by the outer edge (edge used as an upper edge in a standing state) of each 1st side board 3 via the crease line e. Locking holes 11 are formed at the left and right side ends of the first crosspieces 10 so as to contact the crease line e.
[0018]
Further, each second side plate 4 has a notch 12 extending over the entire length in the left-right direction (the height direction in the standing state) at a position that is separated from the front-rear side edge by a distance substantially equal to the width of one-fourth of the front-rear width. Is formed. A handle hole 13 is formed in the central outer portion of each second side plate 4. A second crosspiece 15 is connected to the outer edge of each second side plate 4 (the upper edge when standing) via a crease line g. Locking pieces 16 are continuously connected to the front and rear side edges of the second crosspiece 15 via a crease line h.
[0019]
Next, the assembly from the unfolded state of FIG. 2 will be described step by step.
[0020]
As shown in FIG. 3, first, the first and second side plates 3 and 4 are bent vertically through the crease lines a and b, respectively, and are erected. Next, each connecting piece 6 is folded so as to overlap the outer surface of the second side plate 4 via the crease line c, and the insertion piece 7 is folded and inserted into the cut hole 12 via the crease line d. Next, each protruding piece 9 is inserted into the insertion hole 5 as shown in FIG. At this time, the side edges of the insertion pieces 7 inserted into the same second side plate 4 are abutted with each other. Next, as shown in FIG. 4, the first crosspiece 10 is bent so as to face the bottom plate 2 through the crease line e. Next, the second crosspiece 15 is bent so as to face the bottom plate 2 via the crease line g, and the locking piece 16 is bent inward at a right angle via the crease line h, and inserted into the locking hole 11.
[0021]
In this way, the assembly box 1 shown in FIG. 1 is assembled.
[0022]
According to the assembly box 1 of the present embodiment, the protruding piece portion 9 is inserted into the insertion hole 5, and the insertion piece 7 is disposed so as to be folded inside the second side plate 4, so that it protrudes inside the assembly box 1. There is nothing to do, and the space in the assembly box 1 can be effectively utilized without waste to store articles.
[0023]
Moreover, since the upper edge of the insertion piece 7 supports the bottom surface of the second crosspiece 15, the longer the width of the insertion piece 7 in the front-rear direction, the higher the stacking strength of the assembly box 1. Here, the closer each notch 12 is to the left and right side edges of the second side plate, the longer the longitudinal width of the insertion piece 7, and the greater the stacking strength. However, this makes it difficult to insert the insertion piece 7 into the notch 12 and makes it difficult to assemble the assembly box 1.
[0024]
Based on these facts, in the assembly box 1 of the present embodiment, the front and rear direction width of the connection piece 6 is set to be substantially equal to the quarter width of the second side plate 4 in the front and rear direction width. The notch 12 is located at a position of the second side plate 4 that coincides with the edge, that is, a position that is separated from the side edge of the second side plate 4 by a distance that is substantially equal to one-fourth the width of the second side plate 4 in the front-rear direction. Forming.
[0025]
For this reason, as described above, the insertion piece 7 can be folded inside the second side plate 4 and the storage space of the assembly box 1 can be kept wide, so that the insertion piece 7 can be easily inserted into the cut portion 12. The stacking strength can also be maintained while maintaining the above. Moreover, since the side edges of the insertion pieces 7 to be inserted into the same second side plate are abutted with each other, the portion supporting the second side plate 4 becomes longer, and the stacking strength of the assembly box 1 of the present embodiment is further increased. Can be improved [Brief description of drawings]
FIG. 1 is a perspective view showing a part of an assembly box according to an embodiment.
FIG. 2 is an exploded view of an assembly box according to the present embodiment.
FIG. 3 is an explanatory diagram showing an assembly process of the embodiment.
FIG. 4 is an explanatory view showing an assembly process of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Assembly box, 2 ... Bottom plate, 3 ... 1st side plate, 4 ... 2nd side plate, 5 ... Insertion hole, 6 ... Connection piece, 7 ... Insertion piece, 8 ... Notch part, 9 ... Projection piece part, 10 ... 1st crosspiece, 11 ... locking hole, 12 ... notch part, 13 ... handle hole, 15 ... 2nd crosspiece, 16 ... locking piece.

Claims (2)

A pair of first side plates connected to the front and rear side edges of the rectangular bottom plate and a pair of second side plates connected to the left and right side edges of the bottom plate are each erected via a crease line,
A connecting piece having a width substantially equal to one-fourth of the width of the second side plate in the front-rear direction is connected to the left and right side edges of each first side plate and overlaps the outer surface of each standing second side plate. Bend through the crease line,
Fold the inset piece of approximately the same width as the connecting piece provided on the side edge of each connecting piece inward through the crease line,
Each insertion piece is inserted into a notch formed over the entire length in the height direction of each second side plate at a position matching the side edge of each connection piece of each second side plate, and each inserted piece is inserted In a state of being superimposed on the inner surface of each second side plate, a protruding piece portion formed so as to protrude downward at the lower edge tip portion of each insertion piece is in contact with the crease line between the bottom plate and the second side plate. Inserted into the insertion hole formed and locked
The first crosspiece connected to the upper edge of each first side plate is bent to face the bottom plate via the crease line, and the second crosspiece provided to the upper edge of each second side plate is folded. Through the bottom plate
Inserting and locking the locking pieces provided on both side edges of the second crosspiece into the locking holes formed on the first crosspiece so as to contact the crease line between the first crosspiece and the first side plate. An assembly box characterized by. The insertion pieces are inserted into the respective cut portions, and when the protruding pieces are inserted into the respective insertion holes, the side edges of the insertion pieces inserted into the same second side plate are abutted against each other. The assembly box according to claim 1.

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