JPH10218185A - Corrugated board box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support an upper corrugated board box reliably without particularly making larger a supporting portion of a corrugated board box on which the upper corrugated board box is set, by forming side boards having no projecting pieces into a trapezoidal shape whose upper side is shorter than its lower side, and contracting upper sides of these side boards to position side boards having the projecting pieces inwardly. SOLUTION: Side boards 2 are extendedly provided on four sides of the circumference of a bottom board 5 and, further, inner boards 7 are extendedly provided along the surfaces of the opposed side boards 2 on one side with the aid of width boards 6. Insert pieces 8 provided at top ends of the inner boards 7 are inserted into insert holes 4 to be locked therein and, further, the opposed side boards 2 on the other side are formed into a trapezoidal shape, respectively. Adjacent lateral portions of each side board 2 are connected with one another by means of fold pieces. Furthermore, projecting pieces 3 are formed by providing U-shaped notches ranging from the fold pieces to the width boards 6 and the inner boards 7. When corrugated board boxes 1 are stacked on one another, two projecting pieces 3 provided on the side boards 2 and the fold pieces are inserted into the insert holes 4 provided in the bottom board 5 to support an upper box on a lower box. By this method, the corrugated board box 1 is reliably set on the width boards 6 of the lower box and can be stably stacked thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cardboard box provided with a stacking support.

[0002]

2. Description of the Related Art There are various types of conventional cardboard boxes having a stacking support. Basically,
A projecting piece is provided at the upper end of the side plate forming the peripheral surface, and a locking portion is provided below the projecting piece, and these are supported by being engaged with each other during stacking. Since the protruding piece is provided along the outer surface of the side plate, the locking portion is formed as a recess into which the protruding piece fits. In other words, the outer surfaces of the projecting pieces are exposed even when they are stacked. Also, a protruding piece is provided only at the upper end of the side plate,
There is a structure in which the width of the bottom plate is formed narrower instead of providing the engagement portion at the lower end portion, and the projection piece is brought into contact with the side plate to prevent displacement.

[0003]

However, in a conventional cardboard box provided with a stacking support,
Since the four sides of the side plate are erected, or all or a part of the side plate is formed with the upper end inclined outward, the portion for supporting the cardboard box to be put on is formed quite wide. There was a problem that had to be done. This causes a reduction in storage capacity and a reduction in workability during storage.

[0004] In addition, most cardboard boxes provided with a stacking support portion are in the form of a container having an open top, are repeatedly used as returnable boxes, and have a structure that can be folded. However, in the conventional device, as described above, the supporting portion needs to be formed wide, so that there is a drawback that assembly is difficult, and there is a problem that it cannot be easily used. Furthermore, when repeatedly used as a returnable box, the upper end portion is inevitably easily spread, and the function as a support portion for stacking is reduced at an early stage. This was particularly remarkable in the case of the structure in which the upper end of the side plate was inclined outward, or in the case where the depth of the cardboard box was deep.

[0005]

In view of the above-mentioned problems, the present inventor has accomplished the present invention as a result of intensive research. The feature of the present invention is that four sides around the bottom plate are surrounded by side plates. A protruding piece at the upper end of the side plate disposed at the opposite position of
In a corrugated cardboard container having a stacking support portion provided with a locking portion for the projecting piece at a lower portion of the projecting piece, a side plate having a projecting piece at an upper end and disposed at one opposed position and a width plate from an upper side thereof Between the adjacent side plates of the respective side plates, and a folding piece provided with a fold rule on a diagonal line between the side plates, and a plug provided at the tip of the inner plate. A structure in which the piece is assembled into a container by hooking the piece on the locking portion, and the side plates disposed at other facing positions are formed in a trapezoidal shape in which the upper side is shorter than the lower side, and the locking portion is formed. An insertion hole through which the projecting piece is inserted is provided.

[0006] The "stacking support portion" referred to in this specification is provided with a projecting piece at the upper end of a cardboard container, and a locking portion at the lower end when engaged with the projecting piece. Means to fix it during stacking. In the present invention, the protruding piece is formed at the upper end of the side plate disposed at one opposing position. The engaging portion is an insertion hole opened in the bottom plate. In this case, the insertion hole only needs to be opened at least in the bottom plate, and may be formed by cutting out a part of the side plate. The point is that any part of the projecting piece may be inserted. Further, the projecting piece may be provided at the upper end of a folding piece described later. Since the folding piece is folded in two by the folding rule provided on the diagonal line, two projecting pieces may be provided.

[0007] The "inner plate" is a plate extending from the upper side of the side plate provided with the protruding pieces via a width plate, and having an insertion piece inserted into the insertion hole at the end thereof. Say. The width plate is provided to maintain a space between the side plate and the inner plate, and a U-shaped cut is made in this portion to form a projecting piece at the upper end of the side plate. Of course, depending on the height of the protruding piece and the width of the width plate, a U-shaped cut is formed over the inner plate. The inner plate may be provided with a folded piece for folding from both sides to a lower portion between the side plate and the side plate to secure an opening of the insertion hole. The folded piece keeps the gap between the inner plate and the side plate in the vicinity of the insertion hole, thereby holding the insertion piece of the inner plate inside the insertion hole. This is for facilitating insertion into the device. The folded piece may be fixed to the inner plate with an adhesive such as hot melt or a wire stopper, or may be folded during assembly. However, the folded piece is interposed between the side plate and the inner plate in a folded state, and the interval therebetween is maintained. Therefore, it is not always necessary to provide the folded piece.

[0008] The "folded piece" is one in which adjacent side sides of each side plate are connected to each other and a ruled line is provided diagonally from the base of the side plate. The folded piece is folded between the side plate and the inner plate in a state of being folded into two by the folding rule. And it is hold | maintained by inserting the insertion piece of an inner side plate into an insertion hole, and is formed as a container in this state. The side plate extends on four sides of the bottom plate, and in the present invention, the side plate having no protruding pieces or the like is formed in a trapezoidal shape in which the upper side is shorter than the lower side. Therefore, by squeezing the upper side of the side plate, the side plate having the protruding piece is located inward, and it is possible to reliably support the cardboard box mounted on the upper side without increasing the supporting portion. Become.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments of the invention shown in the drawings.

FIG. 1 shows an embodiment of a cardboard box 1 according to the present invention, in which a projecting piece 3 is provided at an upper end of a side plate 2 and an insertion hole 4 is provided below the projecting piece 3. By providing each of them, a structure is provided in which they are supported during stacking. The cardboard box 1 has side plates 2 extending on four sides around a bottom plate 5, and an inner plate 7 is further extended on one of the opposing side plates 2 via a width plate 6. Is inserted into the insertion hole 4 and locked.
The other opposing side plate 2 has a trapezoidal shape as a whole because the upper side is formed narrower than the lower side. The protruding pieces 3 are formed by making U-shaped cuts in the width plate 6 and the inner plate 7, and are provided at two locations on one opposed side plate 2.

As shown in the blank sheet of FIG. 2, the corrugated cardboard box 1 is formed by connecting adjacent side sides of each side plate 2 with a folding piece 9, and the folding piece 9 is formed on a diagonal line on the base side of the side plate 2. Are folded in two by the folding rule provided in the side plate 2 and are folded between the side plate 2 and the inner plate 7. The projecting piece 3 is also provided on the folding piece 9, and two pieces are juxtaposed by projecting from the opening of the width plate 6 opened to form the projecting piece 3 of the side plate 2.

When the cardboard boxes 1 are stacked, as shown in FIG. 3, the two projecting pieces 3 provided on the side plate 2 and the folding piece 9 are inserted into the insertion holes 4 provided on the bottom plate 5 and supported. State. Therefore, at the time of stacking, the cardboard boxes 1 can be reliably placed on the width plates 6 arranged on both sides, and the stability at the time of stacking is extremely high.

As another example of the embodiment of the cardboard box 1 according to the present invention, as shown in a blank sheet of FIG. 4, folded pieces 10 may be respectively extended from both sides of each inner plate 7. The folded piece 10 is folded inward to form the side plate 2.
This is to maintain the space in the lower part between the inner plate 7 and the inner plate 7 to facilitate the insertion of the projecting pieces 3 into the insertion holes 4 during stacking. If the folded piece 10 is fixed to the inner plate 7 in advance with an adhesive or the like, the labor for assembling can be reduced. Further, the protruding piece 3 may be further provided on the folding piece 9 as shown by a chain line (two-dot chain line) in the figure. In this case, the opening of the insertion hole 4 may be secured by further folding the folded piece 10.

[0014]

As described above, in the cardboard box according to the present invention, four peripheral surfaces of the bottom plate are surrounded by side plates, and a projecting piece is provided at the upper end of the side plate arranged at one opposing position, and a projecting piece is provided below the projecting piece. In a corrugated cardboard container having a stacking support portion provided with a locking portion for a protruding piece, the side plate having a protruding piece at an upper end and extending from a top side of the side plate via a width plate is disposed at one opposed position. Between the adjacent side sides of each side plate, and a folded piece provided with a ruled line on the diagonal line is folded, and the insertion piece provided at the tip of the inner plate is engaged with the locking portion. The side plate disposed at the other opposing position is formed into a trapezoidal shape whose upper side is shorter than the lower side, and the locking portion is inserted through the protruding piece. Because it is a hole, the part to be placed during stacking is Kushinaku also can ensure support. In addition, the upper opening of the box is practically hard to spread, so that the projections and the insertion holes can be securely engaged even when storing items that are actually in use, and can be stacked during storage or transportation. Work becomes extremely easy, and these effects can be similarly maintained even when the box is deep. In particular, even when repeatedly used as a returnable box, it has a very useful effect in practical use, such as a small change in shape, the initial state can be maintained for a long time, and the simple structure allows easy disassembly and assembly. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a cardboard box according to the present invention.

FIG. 2 is a plan view of a blank sheet in which the cardboard box shown in FIG. 1 is developed.

FIG. 3 is a sectional view of a state in which the cardboard boxes shown in FIG. 1 are stacked.

FIG. 4 is a plan view of a blank sheet showing another example of the embodiment of the cardboard box according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated cardboard box 2 Side plate 3 Projection piece 4 Insertion hole 5 Bottom plate 6 Width plate 7 Inside plate 8 Insertion piece 9 Folding piece 10 Folding piece

Claims (3)

[Claims] 1. A stacking support wherein four sides surrounding a bottom plate are surrounded by side plates, and a protruding piece is provided at an upper end of the side plate disposed at one opposing position, and a locking portion of the protruding piece is provided below the protruding piece. In a corrugated cardboard container having a portion, between the side plate disposed at one opposing position and having a protruding piece at the upper end and the inner plate extending from the upper side thereof via the width plate, the side adjacent to each side plate It is of a structure in which the sides are connected to each other, a folding piece provided with a crease on the diagonal is folded, and a fitting piece provided at the tip of the inner plate is engaged with the locking portion to assemble into a container. A side plate disposed at the other opposing position is formed in a trapezoidal shape with an upper side shorter than a lower side, and the locking portion is an insertion hole through which the projecting piece is inserted. 2. The cardboard box according to claim 1, wherein the folding piece has a protruding piece provided at an upper end thereof. 3. The inner plate has a folded piece extending from both sides to a lower portion between the inner plate and the side plate.
Cardboard box as described.