JP2021102470A - Simple assembly box - Google Patents

Abstract

To provide a simple assembly box that can improve yield.SOLUTION: A simple assembly box 11 is assembled from one blank sheet, and includes a bottom surface part 2, a pair of first side surface parts 3 facing each other, and a pair of second side surface parts 4 facing each other. The first side surface parts 3 are connected to a pair of mutually parallel edges of the bottom surface part 2. The second side surface parts 4 include a pair of first flaps 5 which are connected to both side edges of one first side surface part 3, and a pair of second flaps 4 connected to both side edges of the other first side surface part 3. At least either one side edges of the upper and lower edges of the first flaps 3 or the opposite side edges to the one side of the upper and lower edges of the second flaps 4 have notches 12 and 13 for connecting the first flaps 3 and the second flaps 4 by causing the edges to be crossed with each other.SELECTED DRAWING: Figure 4

Description

The present invention relates to an assembly-type simple assembly box that does not require gluing.

As a blank sheet of a simple assembly box that can be assembled without gluing, for example, there is one shown in FIG. The blank sheet 100 shown in FIG. 10 is made of, for example, corrugated cardboard, and a pair of first side surface portions 102 and a pair of second side surface portions 103 form bending lines L100 and L101 on a rectangular bottom surface portion 101 in a plan view. It is connected through a series. An inner wall portion 104 is continuously provided on one of the pair of first side surface portions 102 via a bending line L102, an intermediate portion 105, and a bending line L103, and a top surface portion 106 is continuously provided via a bending line L104 on the other side. doing. An insertion piece 107 is continuously provided on the top surface portion 106 via a bending line L105, and an engagement piece 108 is provided on the tip edge of the inner wall portion 104. A first flap 109 is continuously provided on one side of the second side surface portion 103 via a bending line L106, and a second flap 110 is continuously provided on the other side via a bending line L107. Further, a bent piece 111 is continuously provided at the tip edge of the second side surface portion 103 via a bending line L108. One of the pair of first flaps 109 has a notch 112 at the end edge which becomes the upper end edge when assembling the simple assembly box, and the other has a notch 112 at the end edge which becomes the lower end edge when assembling the simple assembly box. Have.

As shown in FIG. 11, the blank sheet 100 shown in FIG. 10 is raised vertically by bending the pair of second side surface portions 103 by 90 degrees with respect to the bottom surface portion 101, and then the first of the second side surface portions 103. One notch 112 of the pair of first flaps 109 is engaged with the other notch 112 while the flap 109 is bent 90 degrees inward with respect to the second side surface portion 103. As a result, the pair of first flaps 109 are connected, and the pair of second side surface portions 103 are maintained in an upright state.

Next, as shown in FIG. 12 (A), the second flap 110 of the second side surface portion 103 that is vertically raised is bent 90 degrees inward with respect to the second side surface portion 103, and then a pair of first side surfaces. One of the portions 102 is bent 90 degrees to stand up vertically and overlap the outer surface of the pair of second flaps 110. Subsequently, as shown in FIG. 12B, the inner wall portion 104 is bent inward by 180 degrees to sandwich the pair of second flaps 110 with the one first side surface portion 102, and the inner wall portion 104 is engaged. The piece 108 is fitted into the engagement hole 113 formed at the corner of the bottom surface portion 101 with the one first side surface portion 102. As a result, one of the first side surface portions 102 is maintained in an upright state.

Finally, as shown in FIG. 13, the pair of bent pieces 111 are bent inward by 90 degrees to form a slit S between the bent pieces 111 and the second flap 110. Subsequently, the other side of the pair of first side surface portions 102 is bent 90 degrees to stand up vertically, and the top surface portion 106 is bent 90 degrees inward with respect to the first side surface portion 102 to cover and insert. The piece 107 is bent 90 degrees inward with respect to the top surface portion 106 and inserted into the slit S. This completes the assembly of the simple assembly box.

In the simple assembly box described above, the inner wall portion 104 is continuously provided on one of the first side surface portions 102, and the inner wall portion 104 is bent inward by 180 degrees and fixed to the one first side surface portion 102. Maintaining an upright position. As described above, in the simple assembly box described above, since the inner wall portion 104 having substantially the same height as the first side surface portion 102 is continuously provided on one of the first side surface portions 102, a blank is provided as shown in FIG. The length L1 in one direction of the sheet 100 (the XY direction in FIG. 10) is increased, and the area of the corrugated cardboard required for producing the blank sheet 100 is increased accordingly. As shown in FIG. 14, the blank sheet 100 is manufactured by cutting out a predetermined area from one roll-shaped corrugated cardboard sheet 1000 having a predetermined length and width, but when the length L1 of the blank sheet 100 is large. , The number of blank sheets 100 that can be cut out from one corrugated cardboard sheet 1000 at the time of manufacturing the blank sheet 100 (in the case of FIG. 14, the blank sheet 100 that can be cut out in the width direction orthogonal to the transport direction of the corrugated cardboard sheet 1000). The problem arises that the number of sheets) decreases and the yield decreases, and this problem becomes more remarkable as the depth of the simple corrugated cardboard (the height of the first side surface portion 102) increases. In particular, since the width direction of the corrugated cardboard sheet 100 is limited by the manufacturing apparatus, it is desirable that a large number of blank sheets 100 can be cut out in the width direction of the corrugated cardboard sheet 100.

The present invention has been made by paying attention to the above problems, and an object of the present invention is to provide a simple assembly box capable of improving the yield.

The present invention relates to a simple assembly box assembled from one blank sheet. The simple assembly box of the present invention includes a rectangular bottom surface portion, a pair of first side surface portions facing each other, and a pair of second side surface portions facing each other. The second side surface portion is connected to a pair of parallel edge portions, and the second side surface portion is a pair of first flaps connected to both side edges of the first side surface portion and both sides of the other first side surface portion. A pair of second flaps connected to the edge of the first flap, one end of the upper and lower edges of the first flap and the upper and lower edges of the second flap on the opposite side of the other. At least one of the edge edges is characterized by having a notch that intersects the edge edges and connects the first flap and the second flap.

In the simple assembly box of the present invention, the notch of the first flap and the notch of the second flap are V-shaped, and the notches engage with each other in the first flap and the second flap. It can be configured to be connected by doing so.

Further, in the simple assembly box of the present invention, the second side surface portion further includes a pair of third flaps connected to a pair of other parallel edge edges of the bottom surface portion, and the third flap Located inside the first flap and the second flap, the width thereof is substantially the same as the length between the pair of first side surface portions, and the height thereof is the height of the pair of first side surface portions. It can be configured to be about the same height.

Further, in the simple assembly box of the present invention, the second side surface portion further includes a pair of third flaps connected to a pair of other parallel edge edges of the bottom surface portion, and the third flap One of the edge of both sides has a V-shaped notch, and one of the first flap and the second flap has the notch of the flap engage with the notch of the third flap. Can be configured to be connected to the third flap.

The blank sheet for the simple assembly box for assembling the simple assembly box of the present invention is a pair of a rectangular bottom surface portion and a pair of vertically connected blank sheets via a pair of first bending lines parallel to the bottom surface portion. A pair of first flaps connected in the lateral direction via a pair of second bending lines orthogonal to the first bending line on one of the first side surface portion and the pair of first side surface portions, and the pair of first flaps. A pair of second flaps that are connected in the lateral direction via a pair of third folding lines that are orthogonal to the first folding line are provided on the other side of one side surface portion, and the second folding line of the first flap is provided. One edge of both orthogonal edges and / or the edge of the second flap orthogonal to the third bend line of the second flap in the same direction as the one edge. It is characterized by having a notch capable of connecting the first flap and the second flap so as to cross each other.

In the above-mentioned blank sheet, the notch of the first flap and the notch of the second flap are V-shaped, and the notches engage with each other in the first flap and the second flap. It can be configured so that it can be connected with.

Further, the above-mentioned blank sheet is further provided with a pair of third flaps that are connected in the lateral direction via a pair of fourth bending lines that are orthogonal to the first bending line and parallel to each other on the bottom surface portion. The length of the third flap is substantially the same as the length of the first side surface portion in the vertical direction, and the length of the vertical direction is substantially the same as the length of the bottom surface portion in the vertical direction. It can be configured as it is.

Further, the above-mentioned blank sheet is further provided with a pair of third flaps that are connected in the lateral direction via a pair of fourth bending lines that are orthogonal to the first bending line and parallel to each other on the bottom surface portion. The third flap has a V-shaped notch on one of the edge edges on both sides orthogonal to the fourth bending line, and one of the first flap and the second flap has the notch of the flap. It can be configured so that it can be connected to the third flap by engaging with the notch of the third flap.

According to the present invention, it is possible to provide a simple assembly box capable of improving the retention.

It is a perspective view of the simple assembly box which concerns on 1st Embodiment of this invention. It is a top view of the blank sheet for the simple assembly box which concerns on 1st Embodiment of this invention. It is sectional drawing which shows the procedure of assembling the simple assembly box by the blank sheet of FIG. It is sectional drawing which shows the procedure of assembling the simple assembly box by the blank sheet of FIG. 2 following FIG. It is a top view which compared the blank sheet of FIG. 2 and the blank sheet of the conventional example. It is a perspective view of the simple assembly box which concerns on 2nd Embodiment of this invention. It is a top view of the blank sheet for the simple assembly box which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the procedure of assembling the simple assembly box by the blank sheet of FIG. It is sectional drawing which shows the procedure of assembling the simple assembly box by the blank sheet of FIG. 7 following FIG. It is a top view of the blank sheet for the simple assembly box of the conventional example. It is sectional drawing which shows the procedure of assembling the simple assembly box of the conventional example by the blank sheet of FIG. FIG. 11 is a cross-sectional perspective view showing a procedure for assembling a conventional simple assembly box using the blank sheet of FIG. 10 following FIG. It is sectional drawing which shows the procedure of assembling the simple assembly box of the conventional example by the blank sheet of FIG. 10 following FIG. It is a top view explaining the example of cutting out a blank sheet from a corrugated cardboard sheet.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows a simple assembly box 11 which is the first embodiment. The simple assembly box 11 includes a bottom surface portion 2 having a rectangular shape in a plan view, a pair of first side surface portions 3 facing each other, and a pair of second side surface portions 4 facing each other. In the present embodiment, the simple assembly box 11 further includes a top surface portion 8 that can be opened and closed. The simple assembly box 11 can be assembled using the blank sheet 1 shown in FIG. 2 without gluing. The blank sheet 1 can be formed by using various known paper materials such as thick paper and corrugated cardboard.

As shown in FIG. 2, the blank sheet 1 includes a bottom surface portion 2, a pair of first side surface portions 3, a pair of first flaps 4, and a pair of second flaps 5. In the present embodiment, the blank sheet 1 further includes a pair of third flaps 7 and a top surface portion 8. In the present disclosure, in the blank sheet 1, the direction in which one side surface portion 3, the bottom surface portion 2, the other side surface portion 3 and the top surface portion 8 are arranged is the vertical direction, and the direction orthogonal to the vertical direction is the horizontal direction.

The bottom surface portion 2 has a rectangular shape in a plan view and a rectangular shape in the present embodiment, and is orthogonal to a pair of bending lines L1 (corresponding to the “first bending line” in the claims) and the bending lines L1 facing each other in parallel. However, they are separated by a pair of bending lines L2 (corresponding to the "fourth bending line" in the claims) facing each other in parallel.

The pair of first side surface portions 3 are connected to the bottom surface portion 2 via a pair of bending lines L1. The pair of first side surface portions 3 have a rectangular shape in a plan view and a rectangular shape in the present embodiment. A pair of first flaps 5 are laterally provided on one of the pair of first side surface portions 3 via a pair of bending lines L3 (corresponding to the "second bending line" in the claims) orthogonal to the folding line L1. It will be installed in series. On the other side of the pair of first side surface portions 3, a pair of second flaps 6 are laterally arranged via a pair of bending lines L4 (corresponding to the "third bending line" in the claims) orthogonal to the folding line L1. It will be installed in series. Further, on the other side surface portion 3, a top surface portion 8 is continuously provided in the vertical direction via a bending line L5 facing parallel to the bending line L1. The top surface portion 8 has a rectangular shape in a plan view and a rectangular shape in the present embodiment, and insertion pieces 9 are continuously provided in the top surface portion 8 via a bending line L6 facing parallel to the folding line L5.

When assembling the simple assembly box 11 shown in FIG. 1, the bottom surface portion 2 forms the bottom of the simple assembly box 11. The pair of first side surface portions 3 are connected to a pair of edge edges parallel to each other on the bottom surface portion 2 and are perpendicular to the bottom surface portion 2. The pair of first flaps 5 and the pair of second flaps 6 constitute a pair of second side surface portions 4, and the pair of second side surface portions 4 are different from each other, which is different from the pair of first side surface portions 3 of the bottom surface portion 2. It is perpendicular to the bottom surface on a pair of parallel edges. The pair of first side surface portions 3 and the pair of second side surface portions 4 form the outer wall of the simple assembly box 11. The top surface portion 8 is connected to the upper end edge of either of the pair of side surface portions 3 to form a lid for the simple assembly box 11. In the simple assembly box 11, the space surrounded by the bottom surface portion 2, the pair of first side surface portions 3 and the pair of second side surface portions 4 becomes a storage space for storing the contents, and the space above the simple assembly box 11 , An opening (hereinafter, referred to as "upper opening") partitioned by a pair of first side surface portions 3 and a pair of second side surface portions 4 is formed, and the upper opening can be opened and closed by the top surface portion 8.

In the blank sheet 1 shown in FIG. 2, the first flap 5 is an edge 51 on one side of both end edges orthogonal to the bending line L3, and in the present embodiment, an end opposite to the edge 50 connected to the bending line L1. The edge 51 has a notch 12 at the edge 51, which is the upper edge when the simple assembly box 11 shown in FIG. 1 is assembled. The end edge 51 of the first flap 3 is a portion extending at a right angle from the tip edge 52 of the first flap 5 facing parallel to the bending line L3 and a portion extending diagonally toward the end edge 50 side opposite to the end edge 51. A V-shaped notch 12 in a plan view is provided by providing a portion extending diagonally toward the tip edge 30 facing parallel to the bending line L1 of one of the first side surface portions 3.

The second flap 6 is an edge 60 on one side of the edge 60 on both sides orthogonal to the bending line L4, and is an edge 60 on the same direction as the edge 51 having the notch 12 of the first flap 5. Has a notch 13 in the. In the present embodiment, the edge 60 having the notch 13 of the second flap 6 is on the same direction as the upper end edge 51 having the notch 12 of the first flap 5 when assembling the simple assembly box 11 shown in FIG. It becomes the lower end edge 60 on the opposite side. The edge 60 of the second flap 6 extends at a right angle from the tip edge 61 of the second flap 6 facing parallel to the bending line L4, and is oblique toward the bent piece 10 side opposite to the edge 60, which will be described later. It has a V-shaped notch 13 in a plan view by providing a portion extending in a straight line and a portion extending obliquely toward the bending line L1 of the other first side surface portion 3. An engaging groove 14 cut deeper is provided at the bottom of the V-shaped notch 13. The shape of the engaging groove 14 is V-shaped in the present embodiment, but can be various shapes such as a U-shape and a semicircular shape.

On the other side (opposite side of the edge 60) of the edge on both sides orthogonal to the bend line L4 of the second flap 6, the bend line L5 is attached to the edge (the upper edge when the simple assembly box 11 shown in FIG. 1 is assembled). Is formed, and the bent pieces 10 are continuously provided in the vertical direction on the second flap 6 via the bending line L7.

The length of the first flap 5 in the horizontal direction (the length between the tip edge 52 and the bending line L3, which is the width when the simple assembly box 11 shown in FIG. 1 is assembled) is the length in the vertical direction of the bottom surface portion 2. It is substantially the same as the length (the length between the pair of bending lines L1 and the length between the pair of first side surface portions facing each other when the simple assembly box 11 shown in FIG. 1 is assembled). Further, the length of the second flap 6 in the horizontal direction (the length between the tip edge 61 and the bending line L4, which is the width when the simple assembly box 11 shown in FIG. 1 is assembled) is the vertical length of the bottom surface portion 2. It is substantially the same as the length in the direction (the length between the pair of bending lines L1 and the length between the pair of first side surface portions facing each other when the simple assembly box 11 shown in FIG. 1 is assembled). The term "almost the same" is a concept that includes not only the case where the lengths are completely the same but also the case where the lengths are not completely the same but the difference is small (for example, about 5 mm). ..

The third flap 7 is connected to the bottom surface portion 2 in the lateral direction via a pair of bending lines L2. The third flap 7 has a V-shaped notch 15 on one of the edge edges on both sides orthogonal to the bending line L2. In the present embodiment, the notch 15 is provided at the edge 71 on the same direction as the edge 51, 60 having the notches 12, 13 of the first flap 5 and the second flap 6. The edge 71 of the third flap 7 is a portion extending at a right angle from the tip edge 72 of the third flap 7 facing parallel to the bending line L2 and a portion extending diagonally toward the edge 70 side opposite to the edge 71. It has a V-shaped notch 15 in a plan view by providing a portion extending obliquely toward the bending line L1 of one of the first side surface portions 3.

The length of the third flap 7 in the horizontal direction (the length between the tip edge 72 and the bending line L2, which is the width when the simple assembly box 11 shown in FIG. 1 is assembled) is the vertical length of the first side surface portion 3. Approximately the length in the direction (the length between the tip edge 30 and the bending line L1 and the length between the bending line L1 and the bending line L5, which is the height when the simple assembly box 11 shown in FIG. 1 is assembled). It is the same. The term "almost the same" is a concept that includes not only the case where the lengths are completely the same but also the case where the lengths are not completely the same but the difference is small (for example, about 5 mm). ..

When assembling the simple assembly box 11 shown in FIG. 1, as shown in FIG. 4A, the first of the edge on both sides of the first flap 5 and the edge on both sides of the second flap 6 facing each other. Since the one-sided edge 51 (upper edge 51) of the flap 5 and the one-sided edge 60 (lower edge 60) of the second flap 6 have notches 12, 13, the two notches 12, 13 have. By engaging, both end edges 51 and 60 intersect, and the first flap 5 and the second flap 6 are connected. As a result, a pair of second side surface portions 4 are constructed. At this time, a part of the end edge 51 of the first flap 5 is fitted into the engaging groove 14 of the notch 13 of the second flap 6, so that the first flap 5 and the second flap 6 are locked and strengthened. Is connected to.

Further, in the present embodiment, the notch 15 is provided on one end edge 71 of the third flap 7, and the notch 15 and the notch 13 of the end edge 60 (lower end edge 60) of the second flap 6 By engaging with each other, both end edges 71 and 60 intersect, and the third flap 7 and the second flap 6 are connected. As a result, the three flaps 5 to 7 are entwined and connected to each other, so that the connection of the three flaps 5 to 7 is less likely to be disengaged, and the strength of the second side surface portion 4 can be increased.

Next, a procedure for assembling the simple assembly box 11 shown in FIG. 1 using the blank sheet 1 shown in FIG. 2 will be described. First, as shown in FIG. 3A, one first side surface portion 3 is bent 90 degrees with respect to the bottom surface portion 2 to stand up vertically, and then a pair of first flaps of the first side surface portion 3 are raised. 5 is bent 90 degrees inward with respect to the first side surface portion 3. Subsequently, as shown in FIG. 3B, the pair of third flaps 7 are bent 90 degrees with respect to the bottom surface portion 2 to stand up vertically, and the third flap 7 is formed on the outer surface of the corresponding first flap 5. Layer on.

Next, as shown in FIG. 4, after the pair of second flaps 6 of the other first side surface portion 3 are bent 90 degrees inward with respect to the first side surface portion 3, the first side surface portion 3 is bent to the bottom surface. Bend 90 degrees with respect to part 2 to stand up vertically. At this time, a part of the second flap 6 on the tip edge 61 side is inserted inside the corresponding first flap 3 so as to follow the inner surface thereof, and a part on the opposite side of the tip edge 61 is the corresponding third flap. By following the outer surface of 7, the upper end edge 51 of the first flap 5 and the lower end edge 60 of the second flap 6 are crossed, and the notches 12 and 13 are engaged with each other, so that the first flap 5 and the first flap 5 and the first flap 6 are engaged with each other. 2 The flap 6 is connected. At this time, the edge 71 of the third flap 7 and the lower edge 60 of the second flap 6 intersect at the same time and the notches 13 and 15 engage with each other, so that the second flap 6 is also connected to the third flap 7. Will be done. As a result, as shown in FIG. 1, a pair of second side surface portions 4 are constructed, and the pair of first side surface portions 3 are maintained in an upright state, and the simple assembly box 11 is in a state where the top surface portion 8 is opened. Is assembled.

The top surface portion 8 is bent 90 degrees inward with respect to the other first side surface portion 3, and the insertion piece 9 is a slit formed between the pair of bent pieces 10 and the one first side surface portion 3. It can be closed by inserting it into S.

In the simple assembly box 11 of the present embodiment described above, the second side surface portion 4 is configured by connecting the first flap 5 connected to one of the pair of side surface portions 3 and the second flap 6 connected to the other side surface portion 3. At the same time, the state in which the first side surface portion 3 stands upright is maintained. Therefore, unlike the blank sheet 100 of the conventional simple assembly box shown in FIG. 10, it is not necessary to connect the inner wall portion 104 having substantially the same height as the first side surface portion 102 to one of the first side surface portions 102. Therefore, as shown in FIG. 5, the length L2 in one direction (XY direction in FIG. 5) of the blank sheet 1 is changed to the length L1 in the blank sheet 100 of the conventional simple assembly box having the same volume shown in FIG. Can be smaller than. As a result, the area of the corrugated cardboard required to create the blank sheet 1 can be reduced, and when the blank sheet 1 is cut out from one corrugated cardboard sheet 1000 as shown in FIG. 14, the simple assembly of the conventional example is performed. Since the length is smaller than that of the blank sheet 100 of the box (L2 <L1), a large number of blank sheets 1 can be cut out, and the yield can be improved. In particular, the width direction of the corrugated cardboard sheet 100 is limited in size by the manufacturing apparatus. Therefore, in the present embodiment, a large number of blank sheets 1 can be cut out in the width direction of the corrugated cardboard sheet 100, which is extremely effective.

Further, in the blank sheet 1 and the simple assembly box 11 of the present embodiment described above, since the second side surface portion 4 is formed by entwining and connecting the three flaps 5 to 7, the three flaps 5 In addition to being difficult to disconnect, the strength of the second side surface portion 4 can be increased.

Further, in the blank sheet 1 and the simple assembly box 11 of the present embodiment described above, since the box can be manufactured without the need for gluing, the box can be easily assembled.

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

For example, in the above embodiment, the notches 12, 13 and 15 of the flaps 5 to 7 have a V-shape, but the shapes of the notches 12, 13 and 15 are not particularly limited, and a horizontally long or vertically long U-shape. Any shape such as a semicircular shape or a semi-elliptical shape may be used as long as the edges of the flaps 5 to 7 can be crossed to connect the three flaps 5 to 7. Further, although the notches 12, 13 and 15 have a wide groove shape, they may have a narrow linear shape.

Further, in the above embodiment, the first flap 5 has a notch 12 at the upper end edge 51, the second flap 6 has a notch 13 at the lower end edge 60, but the first flap 5 has a notch 12 at the lower end edge. The second flap 6 may have a notch 13 at the upper end edge. In this case, the pair of bent pieces 10 are provided on the upper end edges 51 of the pair of first flaps 3. Further, the third flap 7 has a notch 15 at the edge 70 opposite to the edge 71.

Further, in the above embodiment, the engaging groove 14 is provided in the notch 13 of the second flap 6, but may be provided in the notch 12 of the first flap 5.

Further, in the above embodiment, the top surface portion 8 is continuously provided on one of the first side surface portions 3, but may be continuously provided on the other first side surface portion 3.

Further, in the above embodiment, the pair of third flaps 7 has a notch 15, but the pair of third flaps 7 does not necessarily have to have a notch 15. FIG. 7 shows the simple assembly box 11 of the second embodiment, and FIG. 8 shows the blank sheet 1 of the simple assembly box 11 of the second embodiment. Since the blank sheet 1 and the simple assembly box 11 of the second embodiment have the same configuration as the blank sheet 1 and the simple assembly box 11 of the first embodiment except for the shape of the pair of third flaps 7, the details are described here. Description will be omitted.

The third flap 7 has a rectangular shape in a plan view, and is rectangular in the present embodiment. The length of the third flap 7 in the horizontal direction (the length between the tip edge 72 and the bending line L2, which is the width when the simple assembly box 11 shown in FIG. 6 is assembled) is the vertical length of the first side surface portion 3. Approximately the length in the direction (the length between the tip edge 30 and the bending line L1 and the length between the bending line L1 and the bending line L5, which is the height when the simple assembly box 11 shown in FIG. 6 is assembled). It is the same. In addition, the length of the third flap 7 in the vertical direction (the length between the edge 70s and 71 on both sides, which is the height when the simple assembly box 11 shown in FIG. 6 is assembled) is the length of the bottom surface portion 2. It is substantially the same as the length in the direction (the length between the pair of bending lines L1 and the length between the pair of first side surface portions facing each other when the simple assembly box 11 shown in FIG. 6 is assembled). The term "almost the same" is a concept that includes not only the case where the lengths are completely the same but also the case where the lengths are not completely the same but the difference is small (for example, about 5 mm). ..

Next, a procedure for assembling the simple assembly box 11 shown in FIG. 6 using the blank sheet 1 shown in FIG. 7 will be described. First, as shown in FIG. 8A, the pair of third flaps 7 are bent 90 degrees with respect to the bottom surface portion 2 to stand up vertically. Subsequently, as shown in FIG. 8 (B), one of the first side surface portions 3 is bent 90 degrees with respect to the bottom surface portion 2 to stand up vertically, and then a pair of first side surface portions 3 are raised. The flap 5 is bent 90 degrees inward with respect to the first side surface portion 3 so that the first flap 5 is superposed on the outer surface of the corresponding third flap 7.

Next, as shown in FIG. 9, after the pair of second flaps 6 of the other first side surface portion 3 are bent 90 degrees inward with respect to the first side surface portion 3, the first side surface portion 3 is bent to the bottom surface. Bend 90 degrees with respect to part 2 to stand up vertically. At this time, a part of the second flap 6 on the tip edge 61 side is inserted inside the corresponding first flap 3 so as to follow the inner surface thereof, and a part on the opposite side of the tip edge 61 is the corresponding first flap. By following the outer surface of 5, the upper end edge 51 of the first flap 5 and the lower end edge 60 of the second flap 6 are crossed, and the notches 12 and 13 are engaged with each other, so that the first flap 5 and the first flap 5 and the first flap 5 are engaged with each other. 2 The flap 6 is connected. As a result, as shown in FIG. 6, a pair of second side surface portions 4 are constructed, and the pair of first side surface portions 3 are maintained in an upright state, and the simple assembly box 11 is in a state where the top surface portion 8 is opened. Is assembled.

The top surface portion 8 is bent 90 degrees inward with respect to the other first side surface portion 3, and the insertion piece 9 is a slit formed between the pair of bent pieces 10 and the one first side surface portion 3. It can be closed by inserting it into S.

In the second embodiment as well, as in the first embodiment, when the blank sheet 1 is cut out from one corrugated cardboard sheet 1000 as shown in FIG. 14, the number of blank sheets 1 is larger than that of the blank sheet 100 of the simple assembly box of the conventional example. The number of blank sheets 1 can be cut out, and the yield can be improved. Moreover, since the box can be manufactured without the need for gluing, the box can be easily assembled.

In addition, in the second embodiment, in the pair of second side surface portions 4, the rectangular third flap is located inside the first flap 5 and the second flap 6, and the inner surface of the pair of second side surface portions 4 is formed. To configure. Therefore, all six inner surfaces of the simple assembly box 11 can be made flat, and the contents can be easily accommodated.

Further, in the above embodiment, the pair of third flaps 7 is not always necessary and may be omitted.

1 Blank sheet 2 Bottom part 3 1st side surface part 4 2nd side surface part 5 1st flap 6 2nd flap 7 3rd flap 8 Support plate 11 Simple assembly box 12 1st flap notch 13 2nd flap notch 15 Notch of 3rd flap L1 folding line (1st bending line)
L2 folding line (4th bending line)
L3 folding line (second bending line)
L4 fold line (third fold line)

Claims (4)

It is a simple assembly box that can be assembled from one blank sheet.
The rectangular bottom part and
A pair of facing first side surfaces and
A pair of facing second side surface portions and
The first side surface portion is connected to a pair of edge edges parallel to each other on the bottom surface portion.
The second side surface portion includes a pair of first flaps connected to both end edges of the first side surface portion and a pair of second side surfaces connected to both end edges of the other first side surface portion. Including flaps,
At least one of the upper and lower edge edges of the first flap and at least one of the upper and lower edge edges of the second flap opposite to the one side of the upper and lower edges of the second flap intersects each other. A simple assembly box having a notch connecting one flap and the second flap. The notch of the first flap and the notch of the second flap are V-shaped, and the first flap and the second flap are connected by engaging the notches with each other. Simple assembly box described in. The second side surface further includes a pair of third flaps that are connected to a pair of other parallel edges of the bottom surface.
The third flap is located inside the first flap and the second flap, and the width thereof is substantially the same as the length between the pair of first side surface portions, and the height thereof is the pair. The simple assembly box according to claim 1 or 2, which is substantially the same as the height of the first side surface portion of the above. The second side surface further includes a pair of third flaps that are connected to a pair of other parallel edges of the bottom surface.
The third flap has a V-shaped notch on one of the edges on both sides.
The simplified assembly according to claim 2, wherein one of the first flap and the second flap is connected to the third flap by engaging the notch of the flap with the notch of the third flap. box.

Images