Article storage box

Abstract

The present invention provides an article storage box from which it is possible to smoothly remove an article despite the action of a return force. An article storage box 1 stores an article and comprises a box-shaped body 10. The body 10 has a removal opening formation part 20 with which a removal opening for the article is formed. The removal opening formation part 20 includes a bending flap 22, a bending flap 24, a fold line 32, and a fold line 34. The bending flap 22 and the bending flap 24 can bend obliquely upward such that the inner surfaces thereof face one another. A distal end side 22a of the bending flap 22 has protrusions 26 that project toward the bending flap 24. A distal end side 24a of the bending flap 24 has protrusions 28 that project toward the bending flap 22. The protrusions 26 and the protrusions 28 are spaced apart from and face one another. The fold line 32 is used for bending the bending flap 22. The fold line 34 is used for bending the bending flap 24.

Description

Item storage box

[0001] The present invention relates to an item storage box for storing items.

[0002] An example of a conventional storage box is described in Patent Document 1. The storage box described in this document includes a box-shaped main body having an access opening formed on the top surface thereof. The access opening formed on the top surface thereof includes a pair of folding pieces that are folded diagonally upward from the top surface thereof so that their inner surfaces face each other, and folding lines for folding each folding piece. The folding lines are curved and bulge outward from the folding pieces. An access opening for an item can be formed by folding the folding pieces along the folding lines.

[0003] International Publication No. 2024 / 117271

[0004] In the above-described storage box, the folding pieces are folded along the curved creases. In this case, a force (returning force) acts on the folding pieces to return them to their original (unfolded) state. This prevents the folding angle of the folding pieces from becoming too large. However, when the returning force acts, the pair of folding pieces exerts a stronger force to pinch the items, making it difficult to remove the items from the access opening.

[0005] The present invention has been made in view of the above-mentioned problems, and has an object to provide an item storage box from which items can be smoothly removed despite the action of a return force.

[0006] The item storage box according to the present invention is an item storage box for storing items, and comprises a box-shaped main body having an outlet forming portion in which an outlet for the item is formed, and the outlet forming portion includes first and second folding pieces that are bent diagonally upward so that their inner surfaces face each other, a first curved fold line for folding the first folding piece, and a second curved fold line for folding the second folding piece, and the first tip edge, which is the tip edge of the first folding piece, has a first convex portion that protrudes toward the second folding piece, and the second tip edge, which is the tip edge of the second folding piece, has a second convex portion that protrudes toward the first folding piece, and the first convex portion and the second convex portion are spaced apart from each other and face each other.

[0007] In this storage box, the protrusion (first protrusion) provided on the leading edge (first leading edge) of the first bent piece and the protrusion (second protrusion) provided on the leading edge (second leading edge) of the second bent piece are spaced apart and face each other. By providing a gap between the first protrusion and the second protrusion, the force with which the first and second bent pieces clamp the item can be prevented from becoming too strong. This allows items to be smoothly removed from the access opening.

[0008] According to the present invention, an article storage box is realized from which an article can be smoothly removed despite the action of a return force.

[0009] 9 is a plan view showing a first embodiment of an item storage box according to the present invention. FIG. 10 is a plan view showing an outlet forming portion 20. FIG. 11 is a view for explaining the width w1 of the convex portion 26. FIG. 12 is a view for explaining the length d1 of the convex portion 26. FIG. 13 is a view for explaining the width w2 of the convex portion 28. FIG. 14 is a view for explaining the length d2 of the convex portion 28. FIG. 15 is a view for explaining the distance d3 between the convex portions 26 and 28. FIG. 16 is a plan view showing a fold line 32. FIG. 17 is a perspective view showing an item storage box 1 when in use. FIG. 18 is a view for explaining the structure of an end face taken along line A-A in FIG. 9. FIG. 19 is a perspective view showing a second embodiment of an item storage box according to the present invention. FIG. 11 is a plan view showing the item storage box of FIG. 12. FIG. 19 is a rear view showing the item storage box of FIG. 12. FIG. 19 is a side view showing the item storage box of FIG. 12. FIG. 19 is a view for explaining an example of a method of using the item storage box 2. FIG. 20 is a view for explaining an example of a method of using the item storage box 2. FIG. 21 is a view for explaining an example of a method of using the item storage box 2. FIG. 22 is a view for explaining an example of a method of manufacturing the item storage box 2. 29 is a side view illustrating a modified example of the cutting blade 62. FIG. 29 is a plan view illustrating a modified example of the main body 10. FIG. 29 is a view illustrating the structure of the end face along line CC of FIG. 22. FIG. 29 is a plan view illustrating a modified example of the outlet forming section 20. FIG. 29 is a plan view illustrating a modified example of the tip edge 22a. FIG. 29 is a plan view illustrating a modified example of the tip edge 24a. FIG. 29 is a plan view illustrating another modified example of the outlet forming section 20. FIG. 29 is a plan view illustrating another modified example of the fold line 32 and the fold line 34. FIG. 29 is a plan view illustrating the effect of the modified example of FIG.

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicated explanations will be omitted. (First Embodiment)

[0011] 1 is a plan view showing a first embodiment of an item storage box according to the present invention. The item storage box 1 is an item storage box for storing items and includes a main body 10. Examples of the items include sanitary paper (tissue paper, toilet paper, paper towels, kitchen paper, etc.), gloves, and masks. In this embodiment, a plurality of items are stored in a stacked state in the item storage box 1 (main body 10).

[0012] The main body 10 is box-shaped. Specifically, the main body 10 is rectangular. The main body 10 has a main surface 12. The main surface 12 is rectangular in plan view. In this embodiment, the main surface 12 is equivalent to the top surface of the main body 10. However, the item storage box 1 may be used with the main surface 12 facing upward or with the main surface 12 facing sideways.

[0013] The main body 10 is preferably configured to be refillable with items. This configuration can be achieved, for example, by making the main surface 12 or another surface openable and closable. The main body 10 is flexible. The main body 10 can be made of, for example, paper such as cardboard. The item storage box 1 is preferably made only of paper.

[0014] The main body 10 has an outlet forming section 20. The outlet forming section 20 is provided on the main surface 12 of the main body 10. An outlet for removing an item is formed in the outlet forming section 20. The outlet forming section 20 has a horizontally elongated shape. In other words, the dimension of the outlet forming section 20 in the long side direction of the main surface 12 (the left-right direction in FIG. 1 ) is larger than the dimension of the outlet forming section 20 in the short side direction of the main surface 12 (the up-down direction in FIG. 1 ).

[0015] The outlet forming section 20 includes a folding piece 22 (first folding piece), a folding piece 24 (second folding piece), a crease 32 (first crease), and a crease 34 (second crease). The folding pieces 22 and 24 are folded diagonally upward from the main surface 12 so that their inner surfaces face each other. In other words, the folding pieces 22 and 24 have a double-door structure. Figure 1 shows the folding pieces 22 and 24 in an unfolded state.

[0016] FIG. 2 is a plan view showing the outlet forming portion 20. The leading edge 22a (first leading edge) of the bent piece 22 has a convex portion 26 (first convex portion). The leading edge 22a is the portion of the periphery of the bent piece 22 that faces the outlet. The convex portion 26 protrudes toward the bent piece 24. The leading edge 22a has multiple convex portions 26. The multiple convex portions 26 have mutually congruent shapes. The width w1 (see FIG. 3) of each convex portion 26 is preferably 15 mm or more and 50 mm or less. The width w1 is equal to the distance between the vertices 27a of the recesses 27 (portions between two adjacent convex portions 26). The vertices 27a are the points closest to the long side 12a of the main surface 12 (the long side on the fold line 32 side). Specifically, the width w1 is equal to the distance between a straight line L1 that passes through the vertex 27a located at one end of each convex portion 26 and is parallel to the short side direction of the main surface 12, and a straight line L2 that passes through the vertex 27a located at the other end of the convex portion 26 and is parallel to the short side direction of the main surface 12.

[0017] The length d1 (see FIG. 4 ) of each convex portion 26 is preferably 3 mm or more and 7 mm or less. The length d1 is equal to the distance from the vertex 27 a to the vertex 26 a of each convex portion 26 in the short-side direction of the main surface 12. The vertex 26 a is the point farthest from the long side 12 a of the main surface 12. Specifically, the length d1 is equal to the distance between a line L3 passing through the vertex 27 a located at the end of each convex portion 26 and parallel to the long side direction of the main surface 12, and a line L4 passing through the vertex 26 a of the convex portion 26 and parallel to the long side direction of the main surface 12. Note that if the distance from the vertex 27 a located at one end of the convex portion 26 to the long side 12 a is different from the distance from the vertex 27 a located at the other end of the convex portion 26 to the long side 12 a, the line L3 is taken to be the line passing through the vertex 27 a closer to the long side 12 a.

[0018] The tip edge 24a (second tip edge) of the folded piece 24 has a convex portion 28 (second convex portion). The tip edge 24a is the portion of the periphery of the folded piece 24 that faces the outlet. The convex portion 28 protrudes toward the folded piece 22. The tip edge 24a has multiple convex portions 28. The multiple convex portions 28 have mutually congruent shapes. The width w2 (see FIG. 5) of each convex portion 28 is preferably 15 mm or more and 50 mm or less. The width w2 is equal to the distance between the vertices 29a of the recesses 29 (portions between two adjacent convex portions 28). The vertices 29a are the points closest to the long side 12b of the main surface 12 (the long side on the fold line 34 side). Specifically, the width w2 is equal to the distance between a straight line L5 that passes through the vertex 29a located at one end of each protrusion 28 and is parallel to the short side direction of the main surface 12, and a straight line L6 that passes through the vertex 29a located at the other end of the protrusion 28 and is parallel to the short side direction of the main surface 12. In this embodiment, the width w1 of the protrusion 26 and the width w2 of the protrusion 28 are equal to each other.

[0019] The length d2 (see FIG. 6 ) of each protrusion 28 is preferably 3 mm or more and 7 mm or less. The length d2 is equal to the distance from the vertex 29 a to the vertex 28 a of each protrusion 28 in the short-side direction of the main surface 12. The vertex 28 a is the point farthest from the long side 12 b of the main surface 12. Specifically, the length d2 is equal to the distance between a line L7 passing through the vertex 29 a at the end of each protrusion 28 and parallel to the long side direction of the main surface 12, and a line L8 passing through the vertex 28 a of the protrusion 28 and parallel to the long side direction of the main surface 12. Note that if the distance from the vertex 29 a at one end of the protrusion 28 to the long side 12 b is different from the distance from the vertex 29 a at the other end of the protrusion 28 to the long side 12 b, the line L7 passing through the vertex 29 a closest to the long side 12 b is used. In this embodiment, the length d1 of the protrusion 26 and the length d2 of the protrusion 28 are equal to each other.

[0020] The protrusions 26 and 28 are spaced apart from each other. That is, when the folding pieces 22 and 24 are not folded, the protrusions 26 and 28 are spaced apart from each other. The distance d3 (see FIG. 7 ) between the protrusions 26 and 28 is preferably 0.5 mm or more and 3 mm or less. The distance d3 is equal to the distance between the vertex 26 a of the protrusion 26 and the vertex 28 a of the protrusion 28. Specifically, the distance d3 is equal to the distance between a straight line L9 that passes through the vertex 26 a and is parallel to the long side direction of the main surface 12, and a straight line L10 that passes through the vertex 28 a and is parallel to the long side direction of the main surface 12.

[0021] The protrusions 26 and 28 face each other. The distance from the vertex 26a of one protrusion 26 to the vertex 28a of the other protrusion 28 facing the protrusion 26 in the long-side direction of the main surface 12 is preferably equal to or less than ¼ of the width w1 or w2. This distance is equal to the distance between a line passing through the vertex 26a and parallel to the short-side direction of the main surface 12, and a line passing through the vertex 28a and parallel to the short-side direction of the main surface 12. In this embodiment, the vertex 26a of each protrusion 26 and the vertex 28a of the other protrusion 28 facing the protrusion 26 are located on the same line parallel to the short-side direction of the main surface 12. In other words, the distance is zero.

[0022] Returning to FIG. 1 , the outlet forming section 20 includes a cutout section 20a. The cutout section 20a is surrounded by a cut line and is the portion that is cut out from the outlet forming section 20. The cutout section 20a is entirely surrounded by cut lines. The cut lines that form the periphery of the cutout section 20a include a cut line 42 that coincides with the leading edge 22a of the folded piece 22, a cut line 44 that coincides with the leading edge 24a of the folded piece 24, a portion of a cut line 46 (described later), and a portion of a cut line 48 (described later). The cut lines 42, 44, 46, and 48 are perforations. Only one cutout section 20a exists between the folded pieces 22 and 24. The cutout section 20a reaches the left-right end of the outlet forming section 20 (which is the same as the long side direction of the main surface 12).

[0023] The fold line 32 is a fold line for folding the folding piece 22. That is, the folding piece 22 is folded along the fold line 32. The fold line 32 coincides with the rear end edge of the folding piece 22 (the portion of the periphery of the folding piece 22 that remains separated from the main surface 12 even after the folding piece 22 is folded). The fold line 32 is curved. Specifically, the fold line 32 is curved and bulges outward from the folding piece 22. The vertex 32a of the fold line 32 is located on the center line C1 that bisects the main surface 12 in the long-side direction. The vertex 32a is the point closest to the long side 12a of the main surface 12. The fold line 32 is line-symmetrical with respect to the center line C1. It is preferable that the fold line 32 describe a circular arc or an elliptical arc.

[0024] FIG. 8 is a plan view showing the crease 32. The curvature of the crease 32 is preferably 2.3% or more and 11.6% or less, and more preferably 2.3% or more and 5.8% or less. Here, the curvature is a numerical value reflecting the magnitude of the curve and is defined as the value obtained by dividing the length d4 by the length d5. The length d4 is equal to the length of the short side of the smallest rectangle R1 that can contain the entire crease 32. The length d4 is, for example, 2 mm or more and 20 mm or less. The length d5 ​​is equal to the length of the long side of the rectangle R1. The short side and long side of the rectangle R1 are parallel to the short side and long side of the main surface 12, respectively. The length d5 ​​is, for example, 120 mm or more and 200 mm or less.

[0025] The fold line 34 is a fold line for folding the folding piece 24. In other words, the folding piece 24 is folded along the fold line 34. The fold line 34 coincides with the rear end edge of the folding piece 24 (the portion of the periphery of the folding piece 24 that remains separated from the main surface 12 even after the folding piece 24 is folded). The fold line 34 is curved. Specifically, the fold line 34 is curved and bulges outward from the folding piece 24. The vertex 34a of the fold line 34 is located on the center line C1. The vertex 34a is the point closest to the long side 12b of the main surface 12. The fold line 34 is symmetrical with respect to the center line C1 as the axis of symmetry. It is preferable that the fold line 34 describe a circular arc or an elliptical arc.

[0026] In this embodiment, the fold line 34 has a shape congruent with the fold line 32. The fold line 34 is arranged symmetrically with the fold line 32, with the center line C2, which bisects the main surface 12 in the short-side direction, as the axis of symmetry. On the main surface 12, the entire fold piece 22 is located in the region between the center line C2 and the long side 12a, and the entire fold piece 24 is located in the region between the center line C2 and the long side 12b. The fold pieces 22 and 24 are symmetrical with each other, with the center line C2 as the axis of symmetry. The curvature of the fold line 34 is preferably 2.3% or more and 11.6% or less, and more preferably 2.3% or more and 5.8% or less. The definition of the curvature of the fold line 34 is the same as that of the fold line 32.

[0027] The outlet forming section 20 includes a cut line 46 and a cut line 48. The cut lines 46 and 48 are end cut lines that define the left and right ends of the outlet forming section 20. The cut line 46 connects one end of the fold line 32 to one end of the fold line 34. The cut line 46 coincides with the side edge of the folding piece 22 (the portion of the periphery of the folding piece 22 other than the leading edge 22a or the trailing edge) and the side edge of the folding piece 24 (the portion of the periphery of the folding piece 24 other than the leading edge 24a or the trailing edge). The cut line 46 is a straight line parallel to the short side direction of the main surface 12. The cut line 48 connects the other end of the fold line 32 to the other end of the fold line 34. The cut line 48 coincides with the side edge of the folding piece 22 and the folding piece 24. The cut line 48 is a straight line parallel to the short side direction of the main surface 12. The cut line 48 is arranged symmetrically with the cut line 46 with respect to the center line C1 as the axis of symmetry.

[0028] FIG. 9 is a perspective view showing the storage box 1 in use. FIG. 10 is a diagram illustrating the structure of the end surface along line A-A in FIG. 9 . Items are not shown in FIG. 9 . To use the storage box 1, first, cuts are made in the outlet forming portion 20 along the cut lines 42, 44, 46, and 48. This removes the cutout portion 20a from the outlet forming portion 20. Next, the folding pieces 22 and 24 are folded diagonally upward along the creases 32 and 34, respectively. This forms an outlet 50 between the folding pieces 22 and 24. The item 90 can be removed from the main body 10 by pulling it after it has passed through the outlet 50. Unlike typical tissue storage boxes, the storage box 1 does not have a plastic film at the outlet 50.

[0029] The effects of the item storage box 1 will now be described. In the item storage box 1, the protrusion 26 provided on the tip edge 22a of the bent piece 22 and the protrusion 28 provided on the tip edge 24a of the bent piece 24 are spaced apart and face each other. By providing a gap between the protrusion 26 and the protrusion 28 in this manner, the force (clamping force) that clamps the item 90 between the bent pieces 22 and 24 can be prevented from becoming too strong. This allows the item 90 to be smoothly removed from the removal opening 50. Therefore, an item storage box 1 is realized that allows the item 90 to be smoothly removed despite the application of a return force.

[0030] In the item storage box 1, the clamping force is not too strong, so the risk of damaging the item 90 and the risk of getting injured by having a finger pinched in the outlet 50 can be reduced.

[0031] Furthermore, since the protrusions 26 and 28 face each other, the article 90 can be sandwiched and held between the protrusions 26 and 28. This makes it difficult for the article 90 pulled out from the outlet 50 to fall into the main body 10. This is advantageous for successively removing multiple articles 90 from the article storage box 1.

[0032] Furthermore, by arranging the protrusions 26 and 28 facing each other, the protrusions 26 and 28 can be prevented from entering the recesses 29 and 27, respectively. If the protrusions 26 enter the recesses 29, the protrusions 26 will push the article 90 into the recesses 29, which will cause a problem of making it difficult to remove the article 90 from the outlet 50. Similarly, if the protrusions 28 enter the recesses 27, the protrusions 28 will push the article 90 into the recesses 27, which will cause a problem of making it difficult to remove the article 90 from the outlet 50. According to this embodiment, these problems can be solved.

[0033] By reducing the lengths d1 and d2, the depth of the recesses 27 and 29 can also be reduced. A smaller depth of the recesses 27 and 29 is advantageous for minimizing the above-mentioned problems that occur when the article 90 is pressed into the recesses 27 and 29. From this perspective, the lengths d1 and d2 are preferably 7 mm or less. On the other hand, if the lengths d1 and d2 are too small, the holding force of the protrusions 26 and 28 on the article 90 may be insufficient. From this perspective, the lengths d1 and d2 are preferably 3 mm or more.

[0034] The length d1 of the protrusion 26 and the length d2 of the protrusion 28 are equal to each other. In this case, the bent pieces 22 and 24 can be made congruent in shape. This improves the aesthetic appearance of the access opening 20 and, ultimately, the item storage box 1.

[0035] Increasing the distance d3 between the protrusions 26 and 28 is advantageous for smooth removal of the item 90. From this perspective, the distance d3 is preferably 0.5 mm or more. On the other hand, if the distance d3 is too large, dust will easily enter the main body 10 through the removal opening 50. From this perspective, the distance d3 is preferably 3 mm or less.

[0036] The width w1 of the protrusion 26 and the width w2 of the protrusion 28 are equal to each other, which allows the entire protrusion 26 and the entire protrusion 28 to face each other.

[0037] By reducing the widths w1 and w2, the number of protrusions 26 and 28 can be increased. A larger number of protrusions 26 and 28 is advantageous for strengthening the holding force of the protrusions 26 and 28 on the article 90. From this perspective, the widths w1 and w2 are preferably 50 mm or less. On the other hand, if the widths w1 and w2 are too small, the tips of the protrusions 26 and 28 become narrower, making it easier for the article 90 to get caught on the folding pieces 22 and 24. From this perspective, the widths w1 and w2 are preferably 15 mm or more.

[0038] The leading edge 22a has a plurality of protrusions 26, and the leading edge 24a has a plurality of protrusions 28. In this case, the holding force of the protrusions 26 and 28 on the article 90 can be strengthened compared to when the leading edge 22a and the leading edge 24a each have only one protrusion 26 and one protrusion 28.

[0039] The plurality of protrusions 26 provided on the leading edge 22a have mutually congruent shapes, which can improve the aesthetic appearance of the folding piece 22 and, in turn, the item storage box 1. Similarly, the plurality of protrusions 28 provided on the leading edge 24a have mutually congruent shapes, which can improve the aesthetic appearance of the folding piece 24 and, in turn, the item storage box 1.

[0040] Only one cutout portion 20a exists between the bent pieces 22 and 24. In this case, the work of forming the outlet 50 in the outlet forming portion 20 is easier than when multiple cutout portions exist. In addition, the amount of waste (cutout portions 20a) generated during this process can be reduced.

[0041] The cutouts 20a reach the left and right ends of the outlet forming section 20. In this case, the gap between the protrusions 26 and 28 can be provided over the entire left and right direction of the outlet forming section 20. This is also advantageous for smooth removal of the article 90.

[0042] The fold line 32 is curved and bulges outward from the folding piece 22. In this case, unlike when the folding piece 22 is bent along a straight fold line, a restoring force acts on the folding piece 22 bent along the fold line 32. This prevents the folding angle of the folding piece 22 from becoming too large. This has the advantage of making it more difficult for dust to enter the main body 10 through the outlet 50.

[0043] Moreover, in this embodiment, the fold line 34 also has a curved shape that bulges outward from the folding piece 24. In this case, a restoring force also acts on the folding piece 24 that is folded along the fold line 34. This makes it possible to prevent the folding angle of the folding piece 24 from becoming too large.

[0044] When the fold line 32 forms a circular arc or an elliptical arc, it contributes to improving the aesthetic appearance of the outlet forming section 20 and therefore the item storage box 1. Similarly, when the fold line 34 forms a circular arc or an elliptical arc, it contributes to improving the aesthetic appearance of the outlet forming section 20 and therefore the item storage box 1.

[0045] Increasing the curve rate of the fold line 32 is advantageous for strengthening the return force acting on the folding piece 22. From this perspective, the curve rate of the fold line 32 is preferably 2.3% or more. On the other hand, if the curve rate of the fold line 32 is too large, the return force may become excessively strong. From this perspective, the curve rate of the fold line 32 is preferably 11.6% or less, and more preferably 5.8% or less.

[0046] Increasing the curve rate of the fold line 34 is advantageous for strengthening the return force acting on the folding piece 24. From this perspective, the curve rate of the fold line 34 is preferably 2.3% or more. On the other hand, if the curve rate of the fold line 34 is too large, the return force may become excessively strong. From this perspective, the curve rate of the fold line 34 is preferably 11.6% or less, and more preferably 5.8% or less.

[0047] Increasing the return force has the advantage of making it less likely that the folding pieces 22 and 24 will bend backward. Even if the return force is increased in this way, the item storage box 1 can still ensure smooth removal of the item 90, as described above.

[0048] If the main body 10 is made of paper, the outer surface of the main body 10 can be used as a canvas for drawing. Furthermore, if a line drawing is printed on the outer surface of the main body 10 in advance, the user can enjoy coloring. That is, a line drawing for coloring may be printed on the outer surface of the main body 10. Therefore, the item storage box 1 is also suitable as a toy for children.

[0049] If the main body 10 is configured to be refillable with the items 90, the main body 10 can be reused economically by refilling it with new items 90 even after the items 90 have been used up. This also leads to a reduction in waste (unnecessary main bodies 10), thereby contributing to a reduction in the environmental burden.

[0050] In the item storage box 1, no plastic film is provided at the outlet 50. This contributes to reducing waste plastic, and therefore the item storage box 1 also has the advantage of being environmentally friendly. (Second embodiment)

[0051] Fig. 11 is a perspective view showing a second embodiment of an item storage box according to the present invention. Figs. 12 and 13 are a plan view and a rear view, respectively, of the item storage box of Fig. 11. Figs. 14 and 15 are side views of the item storage box of Fig. 11. The item storage box 2 is an item storage box for storing items and includes a main body 10. In this embodiment, the items are rolled sanitary paper 92. Examples of sanitary paper 92 include tissue paper, toilet paper, paper towels, and kitchen paper. Here, rolled sanitary paper 92 refers to strip-shaped sanitary paper 92 wound around an axis parallel to its short side. A cylindrical core may be provided in the center of the sanitary paper 92, or such a core may not be provided.

[0052] The main body 10 has a main surface 12, a side surface 14, and a side surface 16. The main surface 12 is provided with an outlet forming section 20. The configuration of the outlet forming section 20 is as described in the first embodiment. However, in this embodiment, detailed illustration of the outlet forming section 20 is omitted. The side surface 14 and the side surface 16 are a pair of side surfaces perpendicular to the central axis of the sanitary paper 92. Here, the central axis of the sanitary paper 92 refers to an imaginary axis that corresponds to the central axis of a cylinder or column when the rolled sanitary paper 92 is viewed as a column or cylinder.

[0053] In this embodiment, the main body 10 further has a cutting blade 62, as well as an insertion portion 64 and an insertion portion 66. The cutting blade 62 is a portion for cutting the sanitary paper 92 pulled out from the outlet. The cutting blade 62 is provided at a position separated from the outlet forming portion 20. Specifically, the cutting blade 62 is provided on the periphery of the main surface 12. The cutting blade 62 is formed integrally with a side surface 18 of the main body 10 (see FIG. 13). The side surface 18 is a side surface that is perpendicular to the side surfaces 14 and 16. The cutting blade 62 protrudes above the main surface 12 (see FIGS. 14 and 15).

[0054] The insertion portion 64 is a portion that is inserted into a gap in the center of the sanitary paper 92. As shown in FIG. 14 , the insertion portion 64 is provided on the side surface 14 of the main body 10. The outer shape of the insertion portion 64 is a polygon. Preferably, the outer shape of the insertion portion 64 is a regular n-gon (n is an integer greater than or equal to 5). In this embodiment, an example is shown where n = 8. The insertion portion 64 has cut lines 64a. The cut lines 64a consist of multiple line segments connecting the center of the insertion portion 64 to each vertex. The cut lines 64a are perforations. After cutting the side surface 14 along the cut lines 64a, the tongues (triangular portions with the bases at each side of the polygon) of the insertion portion 64 can be folded inward along the periphery (each side of the polygon) of the insertion portion 64 to insert the insertion portion 64 (multiple tongues) into the center of the sanitary paper 92. In this way, the insertion portion 64 is made up of a part of the side surface 14 .

[0055] The insertion portion 66 is a portion that is inserted into the gap in the center of the sanitary paper 92. As shown in FIG. 15 , the insertion portion 66 is provided on the side surface 16 of the main body 10. The outer shape of the insertion portion 66 is a polygon. Similar to the outer shape of the insertion portion 64, the outer shape of the insertion portion 66 is preferably a regular n-gon. The insertion portion 66 has a cut line 66a. The cut line 66a consists of multiple line segments connecting the center of the insertion portion 66 to each vertex. The cut line 66a is a perforation. After cutting the side surface 16 along the cut line 66a, the tongue can be bent inward along the periphery of the insertion portion 66 toward the inside of the main body 10, allowing the insertion portion 66 to be inserted into the center of the sanitary paper 92. In this way, the insertion portion 66 is made up of a portion of the side surface 16. The insertion portions 64 and 66 are disposed so as to completely overlap each other when viewed from a direction perpendicular to the side surfaces 14 and 16. The entire main body 10, including the cutting blade 62, the insertion portions 64 and 66, is made of the same material. The other configurations of the item storage box 2 are the same as those of the item storage box 1.

[0056] An example of how to use the item storage box 2 will be described with reference to FIGS. 16 to 18 . FIG. 16 is a perspective view showing the item storage box 2 when in use. FIG. 17 is a view illustrating the structure of the end surface along line B-B in FIG. 16 . The sanitary paper 92 is not shown in FIG. 16 . To use the item storage box 2, first, cuts are made in the outlet forming section 20 along the cut lines 42, 44, 46, and 48. This removes the cutout section 20a from the outlet forming section 20. Next, the folding pieces 22 and 24 are folded diagonally upward along the creases 32 and 34, respectively. This forms the outlet 50 between the folding pieces 22 and 24. Furthermore, cuts are made in the side surface 14 along the cut line 64a of the insertion section 64, and cuts are made in the side surface 16 along the cut line 66a of the insertion section 66. Thereafter, the insertion portions 64 and 66 are folded inward of the main body 10 and inserted into the center of the sanitary paper 92 .

[0057] Next, as shown in Figure 17, one end of the sanitary paper 92 is pulled to pull it out of the main body 10. Then, as shown in Figure 18, the pulled-out sanitary paper 92 is pressed against the tip of the cutting blade 62 and cut. This allows a cut piece of sanitary paper 92 of the desired length to be obtained.

[0058] An example of a manufacturing method for the item storage box 2 will be described with reference to Figures 19 and 20. First, a sheet 70 of sufficient size is prepared and cut into the shape shown in Figure 19. In this example, the sheet 70 is made of a single piece of cardboard. The cut sheet 70 includes a portion 12p that will become the main surface 12, a portion 13p that will become the bottom surface of the main body 10 (the surface opposite the main surface 12), a portion 14p that will become the side surface 14, a portion 16p that will become the side surface 16, a portion 18p that will become the side surface 18, and a portion 19p that will become the remaining side surfaces of the main body 10 (the sides other than the sides 14, 16, and 18). The portion 12p has an access opening 20 formed therein. Insertion portions 72 are connected to three sides of the portion 12p. The portion 14p has an insertion portion 64 formed therein. Glue margins 74 are connected to two sides of the portion 14p. The portion 16p has an insertion portion 66 formed therein. Two sides of portion 16p are connected to a margin 76. Portion 18p is connected to a cutting blade 62. Note that Fig. 19 shows the inner surfaces (inner surfaces of main body 10) of portions 12p, 13p, 14p, 16p, 18p, and 19p.

[0059] Next, the sheet 70 is valley-folded along folds F1 to F8. Fold F1 is located at the boundary between portion 12p and portion 16p. Fold F2 is located at the boundary between portion 12p and each insertion portion 72. Fold F3 is located at the boundary between portion 13p and portion 14p. Fold F4 is located at the boundary between portion 14p and each glue tab 74. Fold F5 is located at the boundary between portion 13p and portion 16p. Fold F6 is located at the boundary between portion 16p and each glue tab 76. Fold F7 is located at the boundary between portion 13p and portion 18p. Furthermore, fold F8 is located at the boundary between portion 13p and portion 19p.

[0060] Next, the adhesive tab 74 is glued to the inner surfaces of the portions 18p and 19p, and the adhesive tab 76 is glued to the inner surfaces of the portions 18p and 19p. Then, as shown in FIG. 20 , the inserting portion 72 is inserted into the space surrounded by the portions 13p, 14p, 16p, 18p, and 19p so that the inserting portion 72 overlaps the inner surfaces of the portions 14p, 18p, and 19p. This completes the storage box 2 (main body 10) shown in FIGS. 11 to 15 . In this example, the main body 10 is obtained from a single sheet 70. The inserting portion 72 may or may not be glued to the inner surfaces of the portions 14p, 18p, and 19p. In the former case, sanitary paper 92 must be placed in the space prior to gluing. In the latter case, a main body 10 having an openable main surface 12 is obtained.

[0061] The effects of the item storage box 2 will now be described. The main body 10 has a cutting blade 62. This makes it easier to cut the sanitary paper 92 neatly compared to cutting the sanitary paper 92 pulled out of the main body 10 by hand.

[0062] The cutting blade 62 is provided at a position separated from the outlet forming section 20. In this case, after cutting, the sanitary paper 92 pulled out from the main body 10 remains between the outlet forming section 20 and the cutting blade 62. This has the advantage that the sanitary paper 92 can be easily picked up the next time it is pulled out.

[0063] The cutting blade 62 is provided on the periphery of the main surface 12. In this case, by providing the cutting blade 62 connected to the side surface of the main body 10, the main body 10 having the cutting blade 62 can be realized with a simple configuration. In fact, in the item storage box 2, the cutting blade 62 is connected to the upper end of the side surface 18.

[0064] The main body 10 has insertion portions 64, 66. This makes it difficult for the central axis of the sanitary paper 92 to move. This is advantageous for stably pulling out the sanitary paper 92 from the main body 10.

[0065] The insertion portion 64 is made up of a part of the side surface 14 of the main body 10. This allows the main body 10 having the insertion portion 64 to be realized with a simple configuration. Similarly, the insertion portion 66 is made up of a part of the side surface 16 of the main body 10. This allows the main body 10 having the insertion portion 66 to be realized with a simple configuration.

[0066] When the outer shape of each insertion portion 64, 66 is a regular n-gon (n is an integer of 5 or greater), the outer shape becomes close to a circle, which makes it easier to smoothly rotate the sanitary paper 92 with the insertion portion 64, 66 inserted through the center.

[0067] The entire body 10, including the cutting blade 62, the insertion portion 64, and the insertion portion 66, is made of the same material. This contributes to reducing the manufacturing cost of the item storage box 2. Other effects of the item storage box 2 are the same as those of the item storage box 1.

[0068] In this embodiment, the outer shape of each insertion section 64, 66 is an n-sided polygon (n is an integer greater than or equal to 5). However, the outer shape of each insertion section 64, 66 may also be a triangle or a square. In this case, while it becomes more difficult for the sanitary paper 92 to rotate smoothly, it also becomes more difficult for the sanitary paper 92 to rotate in the reverse direction. This has the advantage that the sanitary paper 92 pulled out of the main body 10 is less likely to return backward.

[0069] In the present embodiment, the case where both the insertion portion 64 and the insertion portion 66 are provided on the main body 10 has been exemplified. However, the main body 10 may be provided with only either the insertion portion 64 or the insertion portion 66. Alternatively, the main body 10 may be provided with neither the insertion portion 64 nor the insertion portion 66.

[0070] In this embodiment, the cutting blade 62 protrudes above the main surface 12. However, the cutting blade 62 may protrude laterally from the main surface 12, as shown in Fig. 21 . In this case, the cutting blade 62 can be formed integrally with the main surface 12.

[0071] In this embodiment, the case where only one roll of sanitary paper 92 is stored in the main body 10 has been illustrated. However, the main body 10 may store multiple rolls of sanitary paper 92, as shown in Figures 22 and 23, for example. Figure 23 is a diagram illustrating the structure of the end surface along line C-C in Figure 22. In this example, two rolls of sanitary paper 92 are stored in the main body 10. A partition 10a is provided within the main body 10 to separate the two rolls of sanitary paper 92. The main surface 12 has multiple outlet forming sections 20 to accommodate the multiple rolls of sanitary paper 92. That is, one outlet forming section 20 has an outlet formed for one roll of sanitary paper 92, and the other outlet forming section 20 has an outlet formed for the other roll of sanitary paper 92.

[0072] Storing multiple sanitary papers 92 in the main body 10 in this way improves convenience for the user. For example, if multiple different types of sanitary papers 92 are stored in the main body 10, the user can selectively remove the appropriate sanitary paper 92 from the main body 10 depending on the application. Furthermore, by providing multiple outlet forming sections 20 to accommodate multiple sanitary papers 92, the multiple sanitary papers 92 can be removed from separate outlets. This prevents the multiple sanitary papers 92 from interfering with each other, allowing each sanitary paper 92 to be removed smoothly.

[0073] The present invention is not limited to the above embodiment, and various modifications are possible. In the above embodiment, the length d1 of the protrusion 26 and the length d2 of the protrusion 28 are equal to each other. However, as shown in FIG. 24, for example, the lengths d1 and d2 may be different. In this figure, the length d2 is greater than the length d1. When the lengths d1 and d2 are different in this way, the design freedom of the outlet forming portion 20 can be increased.

[0074] In the above embodiment, the multiple protrusions 26 have mutually congruent shapes. However, the multiple protrusions 26 may have mutually non-congruent shapes. In this case, it is sufficient that at least two of the multiple protrusions 26 provided on the tip edge 22 a have mutually non-congruent shapes. In this way, when the multiple protrusions 26 have mutually non-congruent shapes, the design freedom of the outlet forming portion 20 can be increased.

[0075] In the above embodiment, the multiple protrusions 28 have mutually congruent shapes. However, the multiple protrusions 28 may have mutually non-congruent shapes. In this case, it is sufficient that at least two of the multiple protrusions 28 provided on the tip edge 24 a have mutually non-congruent shapes. In this way, when the multiple protrusions 28 have mutually non-congruent shapes, the design freedom of the outlet forming portion 20 can be increased.

[0076] In the above embodiment, the leading edge 22a of the bent piece 22 has a cornered shape. That is, the leading edge 22a has a corner at the vertex 27a of the recess 27. However, the leading edge 22a may have a shape without a corner, as shown in FIG. 25, for example. In the figure, the leading edge 22a is wavy and formed along a single continuous curve. When the leading edge 22a has a shape without a corner, the risk of damaging the item 90 and the risk of getting injured by getting a finger caught in the outlet 50 can be further reduced.

[0077] In the above embodiment, the case where the tip edge 24a of the bent piece 24 has a cornered shape has been exemplified. That is, the case where the tip edge 24a has a corner at the vertex 29a of the recess 29 has been exemplified. However, the tip edge 24a may have a shape without a corner, for example, as shown in FIG. 26 . In the same figure, the tip edge 24a is wavy and formed along a single continuous curve. When the tip edge 24a has a shape without a corner, the risk of damaging the item 90 and the risk of getting injured by getting a finger caught in the dispensing opening 50 can be further reduced.

[0078] In the above embodiment, for example, as shown in Figure 27, the distance d6 between the tip edge 22a and the tip edge 24a at the center of the outlet forming section 20 may be larger than the distance between the tip edge 22a and the tip edge 24a in the remaining part of the outlet forming section 20. In the figure, the distance d6 between the tip edge 22a and the tip edge 24a at the center of the outlet forming section 20 is larger than the distance between the tip edge 22a and the tip edge 24a in any other part. By increasing the distance d6 at the center of the outlet forming section 20 in this way, the item 90 can be taken out more smoothly.

[0079] In the above embodiment, the cutout portion 20a reaches the left-right end of the outlet forming portion 20. However, the cutout portion 20a does not have to reach the left-right end of the outlet forming portion 20, as shown in FIG. 28, for example. In the same figure, the outlet forming portion 20 includes a cut line 49 (boundary cut line). The cut line 49 extends from the cutout portion 20a to each of the cut lines 46, 48, forming the boundary between the folded piece 22 and the folded piece 24. The cut line 49 is a perforation. Each of the cut lines 46, 48 is connected to the cut line 49 in a curved manner.

[0080] When cutout portion 20a does not reach the left-right end of outlet forming portion 20 in this way, the gap between protrusions 26 and 28 can be limited to a portion of the left-right direction of outlet forming portion 20. This has the advantage of making it more difficult for dust to enter main body 10 through outlet 50. Furthermore, because each of 46, 48 is connected to cut line 49 in a curved line, when making a cut along cut line 49, it is less likely that the cut will extend beyond the extension of cut line 49 (outside outlet forming portion 20).

[0081] In the above embodiment, the folding line 32 has a curved shape that bulges outward from the folding piece 22. However, the folding line 32 may have a curved shape that bulges inward from the folding piece 22. Similarly, in the above embodiment, the folding line 34 has a curved shape that bulges outward from the folding piece 24. However, the folding line 34 may have a curved shape that bulges inward from the folding piece 24.

[0082] In the above embodiment, for example, as shown in Figure 29, the fold line 32 may be curved so as to bulge outward from the folding piece 22, while the fold line 34 may be curved so as to bulge inward from the folding piece 24. In Figure 29, the curve rate of the fold line 34 is smaller than the curve rate of the fold line 32. The curve rate of the fold line 34 is preferably between ¼ and ¾ of the curve rate of the fold line 32.

[0083] In this case, as shown in Figure 30, no cut lines 46, 48 are present on both sides 32b of fold line 32 (portions that overlap fold line 32 when viewed from the long side of main surface 12), whereas cut lines 46, 48 are present on both sides 34b of fold line 34 (portions that overlap fold line 34 when viewed from the long side of main surface 12). For this reason, folding piece 24, which is bent along fold line 34, is easier to fold than folding piece 22, which is bent along fold line 32. In other words, the bending angle of folding piece 24 is likely to be larger than the bending angle of folding piece 22. As a result, removal opening 50 widens in the height direction of main body 10, allowing item 90 to be removed more smoothly.

[0084] Furthermore, the curve of the crease 34 is smaller than the curve of the crease 32. Making the curve of the crease 34 smaller in this way is also advantageous for making the folding piece 24 easier to fold. This makes it easier to ensure that the outlet 50 is wide in the height direction of the main body 10. From this perspective, it is preferable that the curve of the crease 34 is ¾ or less of the curve of the crease 32. On the other hand, if the curve of the crease 34 is too small, the bending angle of the folding piece 24 may be excessively large. From this perspective, it is preferable that the curve of the crease 34 is ¼ or more of the curve of the crease 32. However, the curve of the crease 34 may be equal to or greater than the curve of the crease 32.

[0085] In the above embodiment, the cut lines 42, 44, 46, 48, and 49 are perforations. That is, the cut lines 42, 44, 46, 48, and 49 are configured so that cuts are made along the cut lines 42, 44, 46, 48, and 49 only when force is applied to both sides of the cut lines 42, 44, 46, 48, and 49. However, the cut lines 42, 44, 46, 48, and 49 may be pre-cut. The same applies to the cut lines 64a and 66a.

[0086] In the above embodiment, the entire main body 10 is made of a single material. However, the main body 10 may be made of multiple materials. For example, it is conceivable to use plastic or metal as the material for the cutting blade 62, while using cardboard as the material for the remainder of the main body 10 (portions other than the cutting blade 62). Alternatively, it is conceivable to use cardboard as the material for the main surface 12, while using another material for the remainder of the main body 10 (portions other than the main surface 12). Examples of other materials include cardboard, CNF (cellulose nanofiber), wood, plastic, or metal.

[0087] REFERENCE SIGNS LIST 1 Item storage box 2 Item storage box 10 Main body 10a Partition section 12 Main surface 12a Long side 12b Long side 14 Side surface 16 Side surface 18 Side surface 20 Access opening forming section 20a Cutout section 22 Folded piece (first folded piece) 22a Tip edge (first tip edge) 24 Folded piece (second folded piece) 24a Tip edge (second tip edge) 26 Convex section (first convex section) 26a Vertex 27 Concave section 27a Vertex 28 Convex section (second convex section) 28a Vertex 29 Concave section 29a Vertex 32 Fold line (first folded line) 32a Vertex 32b Both sides 34 Fold line (second folded line) 34a Vertex 34b Both sides 42 Cut line 44 Cut line 46 Cut line (end cut line) 48 Cut line (end cut line) 49 Cut line (boundary cut line) 50 Take-out opening 62 Cutting blade 64 Insertion part 64a Cut line 66 Insertion part 66a Cut line 70 Sheet 72 Insertion part 74 Adhesive part 76 Adhesive part 90 Article 92 Sanitary paper

Claims

1. An item storage box for storing items, comprising: a box-shaped main body having an outlet forming section through which an outlet for the items is formed, the outlet forming section including: first and second folding pieces that are bent diagonally upward so that their inner faces face each other; a first curved fold line for folding the first folding piece; and a second curved fold line for folding the second folding piece, wherein a first tip edge that is the tip edge of the first folding piece has a first convex portion that protrudes toward the second folding piece, and a second tip edge that is the tip edge of the second folding piece has a second convex portion that protrudes toward the first folding piece, and the first convex portion and the second convex portion are spaced apart from each other and face each other.

2. An item storage box as described in claim 1, wherein the distance between the first convex portion and the second convex portion is 0.5 mm or more and 3 mm or less.

3. An item storage box as described in claim 1, wherein the width of the first convex portion and the width of the second convex portion are equal to each other.

4. An item storage box as described in claim 1, wherein the width of the first and second protrusions is 15 mm or more and 50 mm or less.

5. An item storage box as described in claim 1, wherein the length of said first protrusion and the length of said second protrusion are equal to each other.

6. An item storage box as described in claim 1, wherein the length of the first convex portion and the length of the second convex portion are different from each other.

7. An item storage box as described in claim 1, wherein the length of the first and second protrusions is 3 mm or more and 7 mm or less.

8. An item storage box according to any one of claims 1 to 7, wherein the first end edge has a plurality of the first protrusions, and the second end edge has a plurality of the second protrusions.

9. An item storage box according to claim 8, wherein the plurality of first protrusions have mutually congruent shapes.

10. An item storage box according to claim 8, wherein the plurality of first protrusions have shapes that are not congruent with one another.

11. An item storage box according to claim 8, wherein the plurality of second protrusions have mutually congruent shapes.

12. An item storage box according to claim 8, wherein the second protrusions have shapes that are not congruent with one another.

13. An item storage box as described in claim 8, wherein the distance between the first end edge and the second end edge at the central portion of the removal opening forming portion is greater than the distance between the first end edge and the second end edge at the remaining portion of the removal opening forming portion.

14. An item storage box according to any one of claims 1 to 7, wherein the first tip edge has a shape without corners.

15. An item storage box according to claim 14, wherein the second tip edge has a shape without corners.

16. An item storage box as claimed in any one of claims 1 to 7, wherein the removal opening forming portion is surrounded by a cut line and includes a cut-out portion cut out from the removal opening forming portion, and there is only one cut-out portion between the first folded piece and the second folded piece.

17. An item storage box according to claim 16, wherein the cutout portion reaches the left and right ends of the removal opening forming portion.

18. An item storage box as described in claim 16, wherein the cutout portion does not reach the left and right ends of the removal opening forming portion.

19. An item storage box as described in claim 18, wherein the removal opening forming portion includes an end cut line that constitutes the end, and a boundary cut line that extends from the cutout portion to the end cut line and constitutes the boundary between the first folded piece and the second folded piece.

20. An item storage box according to claim 19, wherein the end cut line is connected to the boundary cut line while drawing a curve.

21. An item storage box according to any one of claims 1 to 7, wherein the first fold line is curved and bulges outward from the first bent piece.

22. An item storage box according to any one of claims 1 to 7, wherein the first fold line is curved and bulges inwardly from the first bent piece.

23. An item storage box according to any one of claims 1 to 7, wherein the first fold line forms a circular arc or an elliptical arc.

24. An item storage box according to any one of claims 1 to 7, wherein the curve rate of the first crease is 2.3% or more and 11.6% or less.

25. An item storage box as described in claim 24, wherein the curve rate of the first crease is 2.3% or more and 5.8% or less.

26. An item storage box according to any one of claims 1 to 7, wherein the second fold line is curved and bulges outward from the second bent piece.

27. An item storage box according to any one of claims 1 to 7, wherein the second fold line is curved and bulges inwardly from the second bent piece.

28. An item storage box according to any one of claims 1 to 7, wherein the second fold line forms a circular arc or an elliptical arc.

29. An item storage box as claimed in any one of claims 1 to 7, wherein the curve rate of the second fold is 2.3% or more and 11.6% or less.

30. An item storage box as described in claim 29, wherein the curve rate of the second crease is 2.3% or more and 5.8% or less.

31. An item storage box according to any one of claims 1 to 7, wherein the first and second fold lines are curved and bulge outward from the first and second bent pieces, respectively.

32. An item storage box as claimed in any one of claims 1 to 7, wherein the first fold line is curved and bulges outward from the first folded piece, and the second fold line is curved and bulges inward from the second folded piece.

33. An item storage box according to claim 32, wherein the curve rate of the second crease is smaller than the curve rate of the first crease.

34. An item storage box according to claim 33, wherein the curve ratio of the second crease is between 1 / 4 and 3 / 4 of the curve ratio of the first crease.

35. An item storage box according to any one of claims 1 to 7, wherein the item is a roll of sanitary paper.

36. An item storage box according to claim 35, wherein the main body has a cutting blade for cutting the sanitary paper pulled out from the outlet.

37. An item storage box according to claim 36, wherein the cutting blade is provided at a position spaced apart from the outlet forming portion.

38. An item storage box according to claim 36, wherein the main body, including the cutting blade, is entirely made of the same material.

39. An item storage box according to claim 35, wherein the main body has an insertion portion that is inserted into a gap in the center of the sanitary paper.

40. An item storage box as described in claim 39, wherein the insertion portion is formed from a part of the side surface of the main body.

41. An item storage box according to claim 40, wherein the outer shape of the insertion portion is a regular n-sided polygon (n is an integer of 5 or more).

42. An item storage box as described in claim 39, wherein the main body, including the insertion portion, is entirely made of the same material.

43. An item storage box according to claim 35, wherein the main body stores a plurality of the sanitary paper sheets.

44. An item storage box according to claim 43, wherein the main body is provided with a plurality of the outlet forming portions so as to correspond to the plurality of sanitary papers.

45. An item storage box according to any one of claims 1 to 7, wherein the main body is configured so that the items can be refilled into the item storage box.

46. ​​An item storage box according to any one of claims 1 to 7, wherein a line drawing for coloring is printed on the outer surface of the main body.

Images