JP2021172360A - Storage box - Google Patents

Abstract

To provide a storage box capable of assembling without using an adhesive agent.SOLUTION: A storage box 1 is assembled from a piece of blank sheet and includes: a first bottom surface part 4 for constituting a bottom surface 2; a pair of first side surface parts 6 for constituting side surfaces 3; a pair of second side surface parts 7 for constituting the side surfaces 3 together with the first side surface parts 6 by being erected with lower end edges being the center so that upper end edges face upward from a state of being arranged flush with each other so as to sandwich the first bottom surface part 4; and a pair of second bottom surface parts 5 connected with the lower end edges of the second side surface parts 7, for constituting the bottom surface 2 together with the first bottom surface part 4. At the first side surface part 6, support parts 8 which overlap with the outside surface of the second side surface part 7 are connected with both side edges thereof. At the second bottom surface part 5, folding parts 9 which overlap with the outside surface of the second bottom surface part 5 are connected with both side edges thereof. The folding part 9 connects the second bottom surface part 5 and the support part 8 by being connected with the lower end edge of the support part 8. The second bottom surface part 5 is placed on the inside surface of the first bottom surface part 4 by an inner end edge part 50 riding over from below the first bottom surface part 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a storage box such as an assembly type tray, and particularly to a storage box that can be assembled without using an adhesive such as glue.

A tray for accommodating and transporting agricultural products such as fruits and vegetables and various other articles is generally assembled by folding a blank sheet such as corrugated cardboard along a predetermined crease. For example, the tray 110 shown in FIG. 10 is assembled by the blank sheet 111 shown in FIG. 11, and has a bottom surface portion 100, a pair of first side surface portions 101 rising from a pair of opposite side edges of the bottom surface portion 100, and a bottom surface portion 100. It includes a pair of second side surface portions 102 that rise from another pair of opposing side edges. A bonding portion 103 is continuously provided on both end edges of the second side surface portion 102, and the bonding portion 103 is bonded to the inside of the first side surface portion 101 using an adhesive such as glue to form four side surfaces. The portions 101 and 102 are maintained in an upright state with respect to the bottom surface portion 100, and the tray 110 has a box shape.

It is also known that this type of tray has a box shape when accommodating articles, but can be folded and flattened when not accommodating articles to save space when storing the tray. (See, for example, Patent Document 1).

In the tray 110 shown in FIG. 10, creases 104 are provided on both side edges of the second side surface portion 102, and the second side surface portion 102 is folded in a mountain at the crease 104 to tilt the first side surface portion 101 inward and the second side surface portion 101 is second. By tilting the side surface portion 102 outward, the tray 110 is made flat as shown in FIG.

Jikkai Sho 59-106825

When assembling from a blank sheet, the above-mentioned conventional tray requires a step of adhering adjacent side surfaces with an adhesive, which causes problems in tray manufacturing efficiency and cost.

The present invention has been made by paying attention to the above problems, and an object of the present invention is to provide a storage box such as a tray that can be assembled without using an adhesive.

The present invention relates to a storage box that is assembled from a single blank sheet and includes a bottom surface and side surfaces surrounding the bottom surface. The storage box of the present invention has a first bottom surface portion constituting the bottom surface, a pair of first side surface portions erected on a pair of opposite side edges of the first bottom surface portion, and forming the side surface, and the first side surface portion. 1 The side surface together with the first side surface portion is raised from a state where the bottom surface portion is arranged flush with each other so that the upper end edge on the first bottom surface portion side faces upward. A pair of second side surface portions and a pair of second bottom surface portions that are connected to the lower end edge of the pair of second side surface portions and form the bottom surface together with the first bottom surface portion. The 1 side surface portion is provided with support portions that are overlapped with the outer surface of the second side surface portion on both side edges thereof, and the second bottom surface portion is a folded portion that is folded over the outer surface of the second bottom surface portion on both side edges thereof. The second bottom surface portion and the support portion are connected by being continuously provided at the lower end edge of the support portion, and at least a part of the second bottom surface portion is connected. It is characterized in that it rides on from under the first bottom surface portion and covers the inner surface of the first bottom surface portion.

In the storage box of the present invention, preferably, the inner end edge portion of the second bottom surface portion is overlapped with the inner surface of the first bottom surface portion, and the first bottom surface portion is the inner end edge portion of the second bottom surface portion. It can be configured such that the portion covered with is bendable up and down with respect to other portions.

Further, the storage box of the present invention is preferably configured so that a concave groove into which at least one user's finger can be inserted is formed in the upper end edge of the second side surface portion. Can be done.

Further, in the storage box of the present invention, preferably, the second side surface portion has a trapezoidal shape in which both side edges approach toward the upper end edge, and the support portion is a portion where the side edges of the second side surface portion hit. It can be configured to be characterized in that it is provided with a crease.

Further, preferably, in the storage box of the present invention, the support portion is provided with a notch at a portion where at least a part of the upper end edge side of the side edge of the second side surface portion touches. Can be configured.

Further, in the storage box of the present invention, a crease is preferably provided at the boundary between the second side surface portion and the second bottom surface portion, and the crease is the thickness of the blank sheet from both sides of the blank sheet. Can be configured to be characterized in that it is formed by compressing.

According to the storage box of the present invention, it can be assembled without using an adhesive.

It is a perspective view of the storage box which concerns on one Embodiment of this invention. It is a top view of the storage box of FIG. It is a bottom view of the storage box of FIG. FIG. 1 is a cross-sectional view taken along the line AA of FIG. It is a blank sheet for the storage box of FIG. It is a BB end view of FIG. It is explanatory drawing which shows the procedure of assembling the containment box. FIG. 7 is an explanatory diagram showing a procedure for assembling the storage box following FIG. 7. It is a perspective view when the storage box of FIG. 1 is made flat. It is a perspective view of the storage box of a conventional example. It is a top view of the blank sheet for the storage box of FIG. It is a perspective view when the storage box of FIG. 10 is made flat.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 4 show a storage box 1 which is an embodiment of the present invention. The storage box 1 is a tray having a rectangular bottom surface 2 and a side surface 3 surrounding the bottom surface 2, and in the present embodiment, the top surface is open.

The bottom surface 2 is mainly composed of a first bottom surface portion 4 and a pair of second bottom surface portions 5 sandwiching the first bottom surface portion 4 in between. As shown in detail in FIG. 4, a part of the second bottom surface portion 5, in the present embodiment, the inner end edge portion 50 having a certain range from the inner end edge of the second bottom surface portion 5 is the inner surface of the first bottom surface portion 4. The second bottom surface portion 5 is supported by the first bottom surface portion 4.

The side surface 3 is mainly composed of a pair of first side surface portions 6 facing each other and a pair of second side surface portions 7 adjacent to the first side surface portion 6 and facing each other. The first side surface portion 6 is a pair of side edges facing each other of the first bottom surface portion 4 and is formed on a pair of side edges orthogonal to the outer end edge (end edge opposite to the inner end edge) of the second bottom surface portion 5. It is erected (that is, it is erected continuously). The second side surface portion 7 is erected on the outer edge of the second bottom surface portion 5.

On both side edges of the first side surface portion 6, support portions 8 projecting inward and overlapping the outer surface of the second side surface portion 7 are continuously provided. Folded portions 9 that are folded over the outer surface of the second bottom surface portion 5 are continuously provided on both side edges of the second bottom surface portion 5. In the present disclosure, the outer surface refers to the outer surface of the storage box 1, and the inner surface refers to the inner surface of the storage box 1.

The storage box 1 is assembled by the blank sheet 10 shown in FIG. The shape of the blank sheet 10 is not limited to the shape shown in FIG. The blank sheet 10 can be formed by using various known paper materials such as thick paper and corrugated cardboard, but the material of the blank sheet 10 is not limited to the above-mentioned paper material. The blank sheet 10 includes a first bottom surface portion 4, a pair of second bottom surface portions 5, a pair of first side surface portions 6, a pair of second side surface portions 7, four support portions 8, and four folded portions 9.

As shown in FIG. 5, in the blank sheet 10, the first bottom surface portion 4 is arranged in the center, a pair of second side surface portions 7 are arranged on both sides in one direction of the first bottom surface portion 4, and the second side surface portion 7 is arranged. The second bottom surface portion 5 is arranged on the opposite side of the first bottom surface portion 4. Further, a pair of first side surface portions 6 are arranged on both sides of the first bottom surface portion 4 in the other direction orthogonal to the one direction. A pair of support portions 8 are arranged on both sides of the first side surface portion 6, a pair of folded portions 9 are arranged on both sides of the second bottom surface portion 5, and the adjacent support portions 8 and the folded portions 9 are connected to each other. , The first side surface portion 6 and the second bottom surface portion 5 are connected.

The first bottom surface portion 4 has a rectangular shape together with the pair of second side surface portions 7, and has a rectangular shape in the present embodiment. A notch 11 is formed between the first bottom surface portion 4 and the second side surface portion 7. The second side surface portion 7 is connected to the first bottom surface portion 4 in a state of being separated from the first bottom surface portion 4 by a notch 11, and is arranged flush with the first bottom surface portion 4 so as to sandwich the first bottom surface portion 4 in between. It is possible to stand up independently.

The notch 11 includes a pair of hypotenuse portions 11a that become narrower toward the first bottom surface portion 4 side, and an apical portion 11b between the tips of the pair of hypotenuse portions 11a. A crease L1 is provided between both ends on the opposite side of the pair of hypotenuse portions 11a from the top end portion 11b, and a second bottom surface portion 5 is continuously provided on the second side surface portion 7 via the crease L1.

The crease L1 may be formed by a ruled line (folded line) formed by compressing the thickness of the blank sheet 10 from one surface of the blank sheet 10, but in the present embodiment, as shown in FIG. 6, the blank sheet 10 may be formed. It is composed of reverse ruled lines formed by compressing the thickness of the blank sheet 10 from both sides of the blank sheet 10. That is, the crease L1 is formed by compressing from one side of the blank sheet 10 and compressing both sides of the blank sheet 10 so as to sandwich the recess on the one side from the other side.

As shown in FIG. 5, in the second side surface portion 7, the end edge at the position of the top edge portion 11b of the notch 11 (the end edge on the first bottom surface portion 4 side) is the upper end edge, and the end at the position of the crease L1. The edge (the edge on the second bottom surface 5 side) is the lower edge. The second side surface portion 7 is pulled up in a direction away from the first bottom surface portion 4 so that the upper end edge faces upward with the lower end edge as the center, and when the storage box 1 is assembled (FIGS. 1 to 4). See) on side 3. The second side surface portion 7 has a trapezoidal shape in which both side edges approach each other toward the upper end edge.

A concave groove 14 is formed in the center in the width direction on the upper end edge of the second side surface portion 7. The concave groove 14 has a size capable of inserting at least one finger of the user, and when the user inserts a finger into the concave groove 14, the second side surface portion 7 can be easily pulled up and started up. ..

The first bottom surface portion 4 is formed with a pair of notches 12 continuous with a pair of hypotenuse portions 11a of the notches 11. As a result, the first bottom surface portion 4 includes a pair of movable portions 40 that are provided between the pair of notches 12 and have a trapezoidal shape. The movable portion 40 is a portion on which the inner end edge portion 50 of the second bottom surface portion 5 rides up and covers when the storage box 1 is assembled (see FIGS. 1 to 4).

A crease L2 parallel to the crease L1 is provided between the ends of the pair of notches 12, and the movable portion 40 can be bent with respect to another portion (main body portion 41) of the first bottom surface portion 4. The folds L2 and the folds L3 to L8 described later can be formed of, for example, ruled lines (folded lines) formed by compressing the thickness of the blank sheet 10 from one surface of the blank sheet 10.

A pair of first side surface portions 6 are continuously provided on the first bottom surface portion 4 via a pair of creases L3 orthogonal to the crease L1. The position of the pair of creases L3 is the pair of opposite side edges of the first bottom surface portion 4. The shape of the first side surface portion 6 is rectangular, and the width thereof is longer than the maximum width of the second side surface portion 7, but may be equal.

A pair of support portions 8 are continuously provided on the first side surface portion 6 via a pair of creases L4 orthogonal to the crease L3. The positions of the pair of creases L4 are both side edges of the second side surface portion 7. The crease L4 is located on the extension line of the crease L1. The support portion 8 is bent 90 degrees inward with respect to the first side surface portion 6 and is overlapped with the outer surface of the second side surface portion 7 when the storage box 1 is assembled (see FIGS. 1 to 4). As a result, the second side surface portion 7 is supported by the support portion 8 so as not to fall outward. The shape of the support portion 8 may be rectangular, quadrant, triangular, or the like, but is preferably rectangular in order to effectively support the second side surface portion 7.

The support portion 8 is provided with a crease L5. The crease L5 is located on a substantially extension line of the hypotenuse portion 11a of the notch 11. The crease L5 is located at a portion where the side edge of the trapezoidal second side surface portion 7 that overlaps the inner surface of the support portion 8 when the storage box 1 is assembled (see FIGS. 1 to 4) abuts. The position of the crease L5 in the support portion 8 does not necessarily have to completely coincide with the portion where the side edge of the second side surface portion 7 hits, and if the crease L5 is parallel to the side edge of the second side surface portion 7, it is somewhat. It may be misaligned.

The support portion 8 is provided with a crease L6 that is parallel to the crease L5. The creases L6 are arranged at intervals from the creases L5, and are spaced apart from each other by approximately the thickness of the blank sheet 10.

The support portion 8 is provided with a notch portion 13. The notch 13 is provided at a portion where at least a part of the upper end edge side of the trapezoidal second side surface portion 7 that overlaps the inner surface of the support portion 8 when the storage box 1 is assembled (see FIGS. 1 to 4) is in contact with the notch portion 13. To position. As a result, the support portion 8 is not overlapped on the outer side of at least the upper end edge side portion of the side edge of the second side surface portion 7. In the present embodiment, the tip edge of the support portion 8 opposite to the end edge to which the first side surface portion 6 is continuously provided (the end edge facing the crease L4 in FIG. 5) and the second bottom surface portion 5 are continuously provided. The support portion 8 is substantially L-shaped because the corner portion between the lower end edge and the upper end edge on the opposite side (the end edge facing the crease L8 in FIG. 5) is cut out in a rectangular shape or a quadrant shape, for example. The shape is formed, and the portion on the upper end edge side of the second side surface portion 7 is exposed without being covered by the support portion 8 by the notch portion 13 having a rectangular shape or the like.

A folded-back portion 9 is continuously provided in the support portion 8 via the crease L8. The position of the crease L8 corresponds to the lower end edge of the support portion 8. The folded-back portion 9 will be described later.

The second bottom surface portion 5 is connected to the second side surface portion 7 via the crease L1. The crease L1 corresponds to the lower end edge of the second side surface portion 7, and the second bottom surface portion 5 is bent 90 degrees inward with respect to the second side surface portion 7 when the storage box 1 is assembled (see FIGS. 1 to 4). ) To form the bottom surface 2 by protruding into the box. The second bottom surface portion 5 has a trapezoidal shape in which the edge at the position of the crease L1 becomes the outer edge, the edge opposite to the crease L1 becomes the inner edge, and both side edges approach toward the inner edge. I'm doing it.

The second bottom surface portion 5 is not the same size as the second side surface portion 7, but is formed to be slightly larger than the second side surface portion 7. Specifically, the angle θ formed by both side edges of the second bottom surface portion 5 with the crease L1 is equal to or slightly larger than the angle α formed by both side edges of the second side surface portion 7 with the crease L1. On the other hand, the distance (height of the trapezoid) H between the inner edge of the second bottom surface portion 5 and the crease L1 is larger than the distance (height of the trapezoid) h between the upper end edge of the second side surface portion 7 and the crease L1. Somewhat big. As a result, when the storage box 1 is assembled (see FIGS. 1 to 4), the inner end edge portion 50 of the second bottom surface portion 5 is covered with the inner surface of the first bottom surface portion 4.

A pair of folded portions 9 are continuously provided on the second bottom surface portion 5 via a pair of creases L7. The positions of the pair of creases L7 are both side edges of the second bottom surface portion 5. The folded-back portion 9 has a triangular shape, and together with the second bottom surface portion 5, has a rectangular shape, and in the present embodiment, has a rectangular shape. The folded-back portion 9 is folded over the outer surface of the second bottom surface portion 5 so that when the storage box 1 is assembled (see FIGS. 1 to 4), the folded-back portion 9 protrudes into the box together with the second bottom surface portion 5 and the tip portion thereof. Is put on the inner surface of the first bottom surface portion 4 together with the inner end edge portion 50 of the second bottom surface portion 5. As a result, the folded-back portion 9 is also supported by the first bottom surface portion 4 together with the second bottom surface portion 5. The tip of the folded-back portion 9 does not necessarily have to cover the inner surface of the first bottom surface portion 4.

The folded-back portion 9 is continuously provided to the support portion 8 via the fold L8. As a result, the movement of folding the folded-back portion 9 on the outer surface of the second bottom surface portion 5 and the movement of bending inward with respect to the first side surface portion 6 of the support portion 8 are interlocked with each other. Therefore, when the folded-back portion 9 is folded over the outer surface of the second bottom surface portion 5 when the storage box 1 is assembled (see FIGS. 1 to 4), the support portion 8 is naturally inside the first side surface portion 6. It is bent and overlapped with the outer surface of the second side surface portion 6.

Further, since the folded-back portion 9 is continuously provided to the support portion 8 via the crease L8, the second bottom surface portion 5 and the support portion 8 are connected by the folded-back portion 9. The inner end edge portion 50 of the second bottom surface portion 5 is covered on the inner surface of the first bottom surface portion 4 at the time of assembling the storage box 1 (see FIGS. 1 to 4), and the second bottom surface portion 5 is below the first bottom surface portion 4. By being supported from the side, it is restricted from opening in the direction (lower side) of coming off from the first bottom surface portion 4. As a result, the support portion 8 connected to the second bottom surface portion 5 is restricted from opening in a direction away from the outer surface (outside) of the second side surface portion 7. Therefore, when the storage box 1 is assembled (see FIGS. 1 to 4), the support portion 8 is maintained in a state of being overlapped with the outer surface of the second side surface portion 7 while being bent inward with respect to the first side surface portion 6. Therefore, the second side surface portion 7 is continuously supported so that the second side surface portion 7 does not fall outward. Further, since the support portion 8 is maintained in a state of being bent inward with respect to the first side surface portion 6, it continues to be pulled inward with respect to the first side surface portion 6 so as not to fall outward. As a result, the first side surface portion 6 and the second side surface portion 7 are maintained in an upright state with respect to the first bottom surface portion 4 and the second bottom surface portion 5, respectively.

Next, a procedure for assembling the storage box 1 shown in FIGS. 1 to 3 using the blank sheet 10 shown in FIG. 5 will be described. First, as shown in FIG. 7A, the first side surface portion 6 is raised by bending the first side surface portion 6 inward by 90 degrees with respect to the first bottom surface portion 4. Then, as shown in FIG. 7B, the second bottom surface portion 7 is pulled up in a direction away from the first bottom surface portion 4 by inserting a user's finger into the concave groove 14 at the upper end edge thereof, thereby drawing the second bottom surface portion 7 (C). ), The second side surface portion 7 is raised. As a result, the side surface 3 of the storage box 1 is formed.

At this time, the second bottom surface portion 5 connected to the second side surface portion 7 changes its direction as the second side surface portion 7 is pulled up, and the second side surface portion is in a state where the inner end edge thereof faces downward. It hangs down from 7. Further, the folded-back portion 9 is folded over the outer surface of the second bottom surface portion 5 in conjunction with the change of the direction of the second bottom surface portion 5, and the support portion 8 is bent 90 degrees inward with respect to the first side surface portion 6. It is superposed on the outer surface of the second side surface portion 7.

Next, as shown in FIG. 8A, the second bottom surface portion 5 is bent 90 degrees inward with respect to the second side surface portion 7, and between the first bottom surface portion 4 and the raised second side surface portion 7. The inner end edge portion 50 of the second bottom surface portion 5 is put on the inner surface of the first bottom surface portion 4 by passing the second bottom surface portion 5 through the space. At this time, if the second bottom surface portion 5 is pushed up as it is, the inner end edge portion 50 abuts on the first bottom surface portion 4, so that the second bottom surface portion 5 does not smoothly pass through the space. On the other hand, as shown in FIG. 8 (B), by pushing up the second bottom surface portion 5 while bending the movable portion 40 of the first bottom surface portion 4 upward with respect to the main body portion 41, FIG. 8 (C) As shown in the above, since the inner end edge portion 50 of the second bottom surface portion 5 smoothly passes through the space without hitting the first bottom surface portion 4, the inner end edge portion 50 of the second bottom surface portion 5 is the first. Easily climb from the bottom to the top of the bottom surface 4. After that, as shown in FIG. 8 (D), by returning the movable portion 40 of the first bottom surface portion 4 to be flush with the original main body portion 41, the inner end edge portion 50 of the second bottom surface portion 5 is formed. It covers the inner surface of the first bottom surface portion 4. As a result, the bottom surface 2 of the storage box 1 is formed, and the storage box 1 shown in FIGS. 1 to 3 is assembled.

As described above, according to the storage box 1 of the present embodiment, the second bottom surface portion 5 constituting the bottom surface 2 is formed by the first bottom surface portion 4 by covering the inner surface of the first bottom surface portion 4 with the inner end edge portion 50 thereof. It is supported and is restricted from opening in the direction (lower side) of falling out of the first bottom surface portion 4. Therefore, even if the article is stored in the storage box 1, the bottom surface 2 can be in a stable state in which bottoming out is suppressed.

On the other hand, the second side surface portion 7 constituting the side surface 3 is supported by the support portion 8 by overlapping the support portion 8 on the outer surface thereof, and is restricted from falling outward. Further, since the support portion 8 is connected to the second bottom surface portion 5 via the folded-back portion 9 and the second bottom surface portion 5 is configured so as not to open downward as described above, the support portion 8 is formed. It is regulated to open the second side surface portion 7 in a direction away from the outer surface (outside). Therefore, the support portion 8 can bring the second side surface portion 7 into a stable and upright state. Further, the first side surface portion 6 is restricted from falling outward because the support portion 8 is maintained in a state of being bent inward with respect to the first side surface portion 6. Therefore, the support portion 8 can bring the first side surface portion 6 into a stable and upright state.

As described above, the storage box 1 of the present embodiment is formed from a blank sheet 10 in which a substantially rectangular sheet is provided with creases and notches, and is formed on the bottom surface 2 by a simple assembly operation without using an adhesive or the like. On the other hand, the side surface 3 can be maintained in an upright state. Further, as shown in FIG. 9, the storage box 1 can be folded from the assembled state to a flatter state, and can be stored and transported in this state.

Further, according to the storage box 1 of the present embodiment, in the first bottom surface portion 4, the movable portion 40 covered by the inner end edge portion 50 of the second bottom surface portion can be bent up and down with respect to the main body portion 41. As a result, when the second bottom surface portion 5 is passed through the space between the first bottom surface portion 4 and the second side surface portion 7, the movable portion 40 is bent upward with respect to the main body portion 41, whereby the second bottom surface portion is formed. No. 5 smoothly passes through the space without the inner end edge portion 50 hitting the first bottom surface portion 4. Therefore, for example, since the inner end edge portion 50 rides up from the bottom of the first bottom surface portion 4 without deforming the second bottom surface portion 5, the bottom surface 2 of the storage box 1 can be easily formed.

Further, according to the storage box 1 of the present embodiment, a concave groove 14 into which at least one user's finger can be inserted is formed on the upper end edge of the second side surface portion 7. Therefore, the second side surface portion 7 can be easily pulled up, and the side surface 3 of the storage box 1 can be easily formed.

Further, according to the storage box 1 of the present embodiment, the second side surface portion 7 has a trapezoidal shape in which both side edges approach toward the upper end edge, and the support portion 8 has the side edges of the second side surface portion 7. A crease L5 is provided at the hit portion. As a result, as shown in FIG. 9, by tilting the second side surface portion 7 outward, the support portion 8 is folded in half at the crease L5 and folded back at the position of the side edge of the second side surface portion 7. While sandwiching the side surface portion 7, it falls outward together with the second side surface portion 7. Then, in conjunction with the movement of the support portion 8, the first side surface portion 6 to which the support portion 8 is continuously provided collapses inward. As a result, the storage box 1 can be deformed into a flat state, and space can be saved when transporting and storing the unused storage box 1. In the present embodiment, the support portion 8 is provided with a crease L6 parallel to the crease L5, and the distance between the crease L5 and the crease L6 corresponds to the thickness of the blank sheet 10. As a result, the support portion 8 is easily folded back at the position of the side edge of the second side surface portion 7 by the folds L5 and L6, so that the storage box 1 can be easily deformed into a flat shape.

Further, according to the storage box 1 of the present embodiment, the support portion 8 is provided with a notch portion 13 at a portion where at least a part of the upper end edge side of the side edge of the second side surface portion 7 hits. As a result, when the second side surface portion 7 is tilted outward in order to make the storage box 1 flat as shown in FIG. 9, the support portion 8 does not interfere with the second side surface portion 7, so that the storage box 1 can be easily made. Can be flattened.

Further, according to the storage box 1 of the present embodiment, the crease L1 at the boundary between the second side surface portion 7 and the second bottom surface portion 5 is formed by compressing the thickness of the blank sheet 10 from both sides of the blank sheet 10. There is. As a result, the second side surface portion 7 and the second bottom surface portion 5 can be smoothly bent both inside and outside, so that the work of assembling the storage box 1 in a box shape and the storage box 1 in a flat shape can be performed. The work of transforming into can be facilitated.

Although the embodiments of the present invention have been described above, the specific embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the above-described embodiments.

For example, in the above-described embodiment, when the storage box 1 is assembled, the second bottom surface portion 5 is entirely passed through the space between the first bottom surface portion 4 and the raised second side surface portion 7. As a modification, for example, only the inner edge portion 50 of the second bottom surface portion 5 can pass through the space.

Further, in the above-described embodiment and modification, only the inner end edge portion 50 of the second bottom surface portion 5 is covered on the inner surface of the first bottom surface portion 4, but as another modification, in addition to the inner end edge portion 50. It is possible to and / or change so that the other portion of the second bottom surface portion 5 (for example, both side edge portions having a certain range from both side edges) is covered with the inner surface of the first bottom surface portion 4.

Further, in the above-described embodiment and modification, the first bottom surface portion 4 includes the movable portion 40, but as another modification, the first bottom surface portion 4 does not include the movable portion 40, that is, the crease L2 or the notch. It is possible not to provide the 12 on the first bottom surface portion 4.

Further, in the above-described embodiment and modified example, the concave groove 14 is provided on the upper end edge of the second side surface portion 7, but as another modified example, the concave groove 14 is not formed on the second side surface portion 7. It is possible.

Further, in the above-described embodiments and modifications, the storage box 1 can be changed from the box shape shown in FIG. 1 to the flat shape shown in FIG. 9, but as another modification, the storage box 1 can be made flat. It is not necessary to provide the folds L5 and L6 and the notch 13 in the support portion 8.

Further, in the above-described embodiment and modified example, the storage box 1 is not provided with a lid and the top surface is open. However, as another modified example, for example, a lid is continuously provided on the first side surface portion 6 to provide the storage box 1. It is possible to block the top surface of the box with a lid.

1 Storage box 2 Bottom 3 Side 4 1st bottom 5 2nd bottom 6 1st side 7 2nd side 8 Support 9 Folded 10 Blank sheet 13 Notch 14 Recessed groove 40 Movable part of 1st bottom 50 Inner edge of the second bottom surface L1 Fold at the boundary between the second side surface and the second bottom surface L5 Fold of the support

Claims (6)

A storage box assembled from a single blank sheet and having a bottom surface and side surfaces surrounding the bottom surface.
The first bottom surface portion constituting the bottom surface and
A pair of first side surface portions that are erected on a pair of opposite side edges of the first bottom surface portion and constitute the side surface.
From the state of being lined up flush with the first bottom surface portion sandwiched between them, the upper end edge on the first bottom surface portion side is raised around the lower end edge so as to face upward, so that the first side surface portion and the first side surface portion are together. A pair of second side surface portions constituting the side surface,
A pair of second bottom surface portions, which are connected to the lower end edge of the pair of second side surface portions and form the bottom surface together with the first bottom surface portion, are provided.
The first side surface portion is provided with support portions that are overlapped with the outer surface of the second side surface portion on both side edges thereof.
The second bottom surface portion is provided with a series of folded portions that are folded over the outer surface of the second bottom surface portion on both side edges thereof.
The folded-back portion is connected to the lower end edge of the support portion to connect the second bottom surface portion and the support portion.
The second bottom surface portion is a storage box characterized in that at least a part thereof rides on from under the first bottom surface portion and covers the inner surface of the first bottom surface portion. The inner end edge of the second bottom surface is overlapped with the inner surface of the first bottom surface.
The storage box according to claim 1, wherein the portion of the first bottom surface portion covered with the inner end edge portion of the second bottom surface portion can be bent up and down with respect to other portions. The storage box according to claim 1 or 2, wherein a concave groove into which at least one user's finger can be inserted is formed in the upper end edge of the second side surface portion. The second side surface portion has a trapezoidal shape in which both side edges approach toward the upper end edge.
The storage box according to any one of claims 1 to 3, wherein the support portion is provided with a crease in a portion where the side edge of the second side surface portion contacts. The storage box according to any one of claims 1 to 4, wherein the support portion is provided with a notch in a portion where at least a part of the upper end edge side of the side edge of the second side surface portion hits. .. A crease is provided at the boundary between the second side surface portion and the second bottom surface portion.
The storage box according to any one of claims 1 to 5, wherein the crease is formed by compressing the thickness of the blank sheet from both sides of the blank sheet.

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