Box

Abstract

To provide a box assembled from one sheet and suitable for housing an article needing cold insulation.SOLUTION: A box is formed such that folding parts 10a, 10b doubly folded inward and folded into in / out surface sides of second side wall parts are provided between first side wall parts 4 and the second side wall parts 6 formed on four sides of a bottom part 2 and adjacent to each other; projecting piece parts 12a, 12b are provided to two open sides of the folding parts; locking piece parts 15 continuously contact with the open sides of the second side wall part via sixth folding lines 14 are formed; fitting ports 16a, 16b fitted to the projecting piece parts provided to the folding parts are formed between the locking piece part and the second side wall part; projecting piece parts provided to the open side of the folding part are fitted to the fitting ports by ridge-folding the locking piece parts 15 from the sixth folding line; and engagement holes 19 disengageably engaging each of corner parts on one diagonal line of a cold insulator are formed into the folding parts in one diagonal line direction of the respective two folding parts folded in the inner surface sides of the facing second side wall part.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a box constructed from a single sheet and provided with a support means for supporting a rectangular plate-shaped ice pack therein. [Background technology]

[0002] The box is assembled from a single sheet, and has a first side wall portion connected to two opposing sides of a rectangular bottom portion via a first fold line, and a second side wall portion connected to the other two opposing sides of the bottom portion via a second fold line, and is formed into a square having both side edges connected to adjacent first and second side wall portions via third and fourth fold lines, respectively, and is folded inwardly in half with the diagonal line between the third and fourth fold lines as a fifth fold line to form a triangle. There is a box in which a folded portion is provided that is folded toward the inner surface of a wall portion, two open edges of the folded portion are provided with protrusions, and a locking piece is provided that is connected to the open edge of the second side wall portion via a sixth fold line, and an engagement opening is formed between the locking piece and the second side wall portion into which the protrusion provided on the folded portion fits, and by valley folding the locking piece from the sixth fold line, the protrusion provided on the open edge of the folded portion folded toward the inner surface of the second side wall portion fits into the engagement opening (see, for example, Patent Document 1).

[0003] A box constructed in this manner is easy to handle and is suitable as a box for storing various items. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent Publication No. 2021-14282 Summary of the Invention [Problem to be solved by the invention]

[0005] The box described in Patent Document 1 can be used to store items that need to be kept cold, such as frozen foods and fresh foods, by putting frozen ice packs (cooling agents) inside the box, but no special measures are provided inside the box to support the ice packs.

[0006] As a result, the positions of the items that need to be kept cold and the ice packs inside the box may be unstable, making it impossible to provide proper cooling, or the items to be kept cold may be deformed due to contact with the ice packs.As a result, the boxes are not necessarily suitable for stably storing items that need to be kept cold, such as frozen foods and fresh foods.

[0007] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a box which can be assembled from a single sheet and is suitable for stably storing items which require refrigeration. [Means for solving the problem]

[0008] In order to achieve the above object, the invention described in claim 1 provides a box assembled from a single sheet having a support means for supporting a rectangular plate-shaped ice pack inside, the box having a rectangular bottom with a first side wall portion connected to two opposing sides of the bottom through a first fold line, and a second side wall portion connected to the other two opposing sides of the bottom through a second fold line, and a folded-in portion is provided between the adjacent first side wall portion and second side wall portion, the folded-in portion is connected to both side edges through a third fold line and a fourth fold line, the folded-in portion is folded inwardly in half with the diagonal line between the third fold line and the fourth fold line as a fifth fold line, and is folded into a triangle that is folded into the inner surface of the second side wall portion. The two open edges of the folding portion are provided with protrusions, and a locking piece portion is provided connected to the open edge of the second side wall portion via a sixth fold line, and an engagement opening is formed between the locking piece portion and the second side wall portion into which the protrusion portion provided on the folding portion fits, and by valley folding the locking piece portion from the sixth fold line, the protrusion portion provided on the open edge of the folding portion folded toward the inner surface of the second side wall portion fits into the engagement opening.Furthermore, of the two folding portions folded toward the inner surface of the opposing second side wall portions, an engagement hole is formed in one diagonal folding portion for releasably engaging with a corner portion on one diagonal of the ice pack.

[0009] According to the invention described in claim 1, a box can be assembled from a single sheet by a simple operation of folding the folded portion provided between the adjacent first side wall portion and the second side wall portion inwardly in half by valley-folding the third fold line and the fourth fold line and mountain-folding the fifth fold line, while valley-folding the first side wall portion and the second side wall portion from the bottom along the first fold line and the second fold line to raise the folded portion, folding the folded portion folded in half toward the inner surface of the second side wall portion and overlapping it on the inner surface of the second side wall portion, and from this state, valley-folding the locking piece provided at the open edge of the second side wall portion along the sixth fold line, and fitting the protruding piece provided at the open edge of the folded portion folded toward the inner surface of the second side wall portion into the fitting opening formed between the locking piece and the second side wall portion.

[0010] Furthermore, of the two folded portions folded onto the inner surface of the opposing second side wall portions, one diagonal folded portion has an engagement hole formed therein for releasably engaging with a corner portion on one diagonal of the ice pack. Therefore, by engaging the corner portion on one diagonal of the ice pack with the engagement hole formed in the folded portion in one diagonal direction and engaging the corner portion on the other diagonal with the engagement hole formed in the folded portion in the other diagonal direction, the ice pack can be stably supported at a predetermined position within the box.

[0011] The invention described in claim 2 is characterized in that, when the folding portion described in claim 1 is folded in half from the fifth fold line and folded toward the inner surface side of the second side wall portion, the engagement hole formed in the folding portion is formed in a position close to the open edge of the second side wall portion.

[0012] According to the invention described in claim 2, the engagement hole formed in the folded portion is formed in a position close to the open edge of the second side wall portion when the folded portion is folded in half from the fifth fold line toward the inner surface of the second side wall portion. Therefore, the ice pack engaged with the engagement hole is supported on the opening side opening upward of the box, so that a large storage space can be secured within the box and an efficient cooling effect can be obtained.

[0013] The invention described in claim 3 is characterized in that the engagement hole formed in the folding portion in one diagonal direction described in claim 1 or 2 is located on a diagonal line that intersects at the midpoint of an imaginary line that divides the opposing second side wall portion into left and right halves at their respective center positions.

[0014] According to the invention described in claim 3, the engagement hole formed in the folded portion in one diagonal direction is located on a diagonal line that intersects at the midpoint of an imaginary line that divides the opposing second side wall portion into left and right halves at their respective center positions, so that the ice pack can be supported in a more stable state, and the ratio of the opening area of ​​the opening of the box to the planar area of ​​the ice pack can be made closer, thereby achieving a more efficient cooling effect. Effect of the Invention

[0015] As described above, the box according to the present invention is easy to assemble, convenient to handle, and suitable for stably storing items that require refrigeration. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing an example of an embodiment of a box according to the present invention. [Diagram 2] FIG. 2 is an exploded view of the box shown in FIG. [Diagram 3] 2A to 2C are explanatory diagrams showing the process of assembling the box shown in FIG. [Figure 4] 2 is a perspective view showing an example of a cooling agent supported in the box shown in FIG. 1. [Diagram 5] 2 is an explanatory diagram showing a state in which a cooling agent is supported in the box shown in FIG. 1. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a box according to the present invention will be described in detail with reference to the drawings. Figures 1 to 5 show an example of an embodiment of a box according to the present invention, with Figure 1 being an oblique view of the box of this example, Figure 2 being an exploded view of the box shown in Figure 1, Figure 3 being an explanatory diagram showing the process of assembling the box shown in Figure 1, Figure 4 being an oblique view showing an example of an ice pack supported by the box shown in Figure 1, and Figure 5 being an explanatory diagram showing the state in which the ice pack is supported by the box shown in Figure 1.

[0018] Box 1 of this embodiment has a support means for supporting rectangular plate-like ice pack 100 therein, and is assembled from a single sheet. The sheet to be used is not particularly limited as long as it is a sheet-like material, and examples of the sheet that can be used include paper sheets, plastic sheets, etc. Paper sheets include thick paper sheets, white paperboard sheets, paper corrugated sheets, etc., and plastic sheets include plastic plate sheets, plastic corrugated sheets, etc.

[0019] The sheet may have at least one surface that will become the inner surface of the box treated to be liquid-resistant. For liquid-resistant treatment, a paper sheet such as a thick paper sheet, a white paperboard sheet, or a corrugated paper sheet may be laminated with a liquid-resistant film or coated with a liquid-resistant paint, or a liquid-resistant agent may be contained in the paper layer. In this example, the sheet used to assemble the box 1 is a corrugated cardboard sheet made of paper, the entire surface of which that will become the inner surface of the box 1 is coated with a liquid-resistant paint.

[0020] As shown in the developed view of Figure 2, a box 1 made of such a cardboard sheet has a first side wall portion 4 provided on each of two opposing sides of a rectangular bottom portion 2 via a first fold line 3, and a second side wall portion 6 provided on each of the other two opposing sides of the bottom portion 2 via a second fold line 5.

[0021] Between the adjacent first side wall portion 4 and second side wall portion 6, there are provided folded portions 10a, 10b, which are connected to both side edges via third fold lines 7 and fourth fold lines 8, respectively, and are formed into a square with both side edges as two sides, and are folded inward in half with the diagonal line between the third fold line 7 and the fourth fold line 8 as a fifth fold line 9, to form a triangle and be folded toward the inner surface side of the second side wall portion 6.

[0022] In this example, the lengths of both side edges of the first side wall 4 and the second side wall 6 are the same as the lengths of the two sides of the bottom 2 that contact the second side wall 6. Therefore, when the folded-in portion formed into a square with both side edges of the first side wall 4 and the second side wall 6 as two sides is folded in half and folded into the inner surface side of the second side wall 6, a notch 11 is formed in the open corner of the square folded-in portions 10a, 10b before folding so that the tips of the triangular folded-in portions 10a, 10b do not overlap each other.

[0023] In addition, protrusions 12a, 12b are provided on the two open sides of the folded portions 10a, 10b. In this example, the central portions of the two open sides of the folded portions 10a, 10b are cut to a depth exceeding the sheet thickness to form recesses 13, and protrusions on both sides of recesses 13 are protrusions 12a, 12b, so that the recesses 13 formed on the two open sides of the folded portions 10a, 10b and the protrusions 12a, 12b overlap when the folded portions 10a, 10b are folded in half along the fifth fold line 9.

[0024] In addition, a locking piece portion 15 is provided on the open edge of the second side wall portion 6, which is connected via a sixth fold line 14, and fitting openings 16a, 16b are formed between the locking piece portion 15 and the second side wall portion 6, into which the protrusions 12a, 12b provided on the folded portions 10a, 10b fit. By folding the locking piece portion 15 in a valley from the sixth fold line 14, the protrusions 12a, 12b provided on the folded portions 10a, 10b folded toward the inner surface of the second side wall portion 2 fit into the fitting openings 16a, 16b.

[0025] In this example, the fitting openings 16a, 16b are formed by slits provided between the locking piece portion 15 and the second side wall portion 6, and as described below, by folding the locking piece portion 15 from the sixth fold line 14, the slits open and the fitting opening 16a opens in a hole-like shape, and the fitting opening 16b opens in a groove-like shape.

[0026] In the present example, in the locking piece portion 15 provided on the open edge of the second side wall portion 6, an engagement opening 16a is formed in the center along the open edge of the second side wall portion 6, into which the two overlapping protrusion portions 12a fit, and engagement openings 16b are formed on both sides of the locking piece portion 15 along the open edge of the second side wall portion 6, into which the two overlapping protrusion portions 12b fit.

[0027] Between fitting opening 16a and fitting opening 16b is connecting portion 17 where locking piece 15 is connected to second side wall 6, and connecting portion 17 has a width that can fit into recesses 13 formed in the two open sides of folded-in portions 10a and 10b, and second side wall 6 is provided with cuts 18 that form connecting portion 17 within a range that does not exceed the depth of recess 13, and the line connecting the tips of cuts 18 is sixth fold line 14. By folding locking piece 15 from sixth fold line 14, connecting portion 17 is formed by cut 18, and a slit is opened so that fitting opening 16a opens in a hole-like shape and fitting opening 16b opens in a groove-like shape.

[0028] Furthermore, among the folding portions 10a, 10b provided between the adjacent first side wall portion 4 and second side wall portion 6 and respectively folded onto the inner surface side of the opposing second side wall portion 6, each of the folding portions 10a in one diagonal direction has an engagement hole 19 formed therein that releasably engages with a corner portion on one diagonal of the ice pack 100 when the box 1 is assembled as described below, thereby serving as a support means for supporting the ice pack 100 (see Figures 1 and 5).

[0029] In this example, two engagement holes 19 are formed on either side of the fifth fold line 9 of the folded portion 10a, and the two engagement holes 19 are formed at positions that overlap when the folded portion 10a is folded in half along the fifth fold line 9 to form a triangle, and are also formed at positions close to the open edge of the second side wall portion 6 when the folded portion 10a is folded in half along the fifth fold line 9 and folded toward the inner surface side of the second side wall portion 6 (see FIG. 3 ).

[0030] In addition, the engagement holes 19 formed in each of the diagonal folded portions 10a are formed so as to be located on a diagonal line L2 that intersects at the midpoint C of an imaginary line L1 that divides the opposing second side wall portions 6 into left and right halves at their respective center positions when the folded portion 10a is folded in half from the fifth fold line 9 toward the inner surface side of the second side wall portion 6 (see FIG. 5).

[0031] In this example, a lid portion 21 is provided on an open side of the first side wall portion 4 provided on one of the two opposing sides of the bottom portion 2, the lid portion 21 being connected via a seventh fold line 20.

[0032] The box 1 of this example having such an unfoldable structure is assembled as follows. First, the first side wall 4 provided on two opposing sides of the bottom 2 is raised by valley folding from the first fold line 3, and the second side wall 6 provided on the other two opposing sides of the bottom 2 is raised by valley folding from the second fold line 5. In synchronization with the raising of the first side wall 4 and the second side wall 6, the square folded portions 10a and 10b provided between the adjacent first side wall 4 and second side wall 6 are folded inwardly in two by mountain folding at the diagonal fifth fold line 9 and valley folding at the third fold line 7 and the fourth fold line 8 to form a triangle, and are folded toward the inner surface of the second side wall 6. When the folded portions 10a and 10b are folded inward in two to form a triangle, the recesses 13 formed on the two open sides of the folded portions 10a and 10b and the protruding pieces 12a and 12b overlap with each other (see FIG. 3).

[0033] Next, the locking piece portion 15 provided on the open edge of the second side wall portion 6 is folded inwardly from the sixth fold line 14, and the protrusion portions 12a, 12b provided on the folded portions 10a, 10b are fitted into the fitting openings 16a, 16b formed between the locking piece portion 15 and the second side wall portion 6.

[0034] In this example, in the locking piece portion 15, a fitting opening 16a is formed in the center along the open edge of the second side wall portion 6, into which the two overlapping protrusions 12a fit, and fitting openings 16b are formed on both sides of the locking piece portion 15 along the open edge of the second side wall portion 6, into which the two overlapping protrusions 12b fit. Between the fitting openings 16a and 16b is a connecting portion 17 where the locking piece portion 15 is connected to the second side wall portion 6, and the connecting portion 17 has a width that can fit into the recesses 13 formed on the two open edges of the fold-in portion 10, and further, the second side wall portion 6 has a connecting portion 17 extending in a direction not exceeding the depth of the recesses 13. An incision 18 is provided to form a connection portion 17, and the line connecting the tips of the incision 18 is the sixth fold line 14. By folding the locking piece portion 15 in a valley shape from the sixth fold line 14, the incision 18 forms the connecting portion 17, and a slit is opened so that the fitting opening 16a opens in a hole-like shape and the fitting opening 16b opens in a groove-like shape. By folding the locking piece portion 15 inwardly from the sixth fold line 14 and fitting the connecting portion 17 into the recess 13, the protrusion portions 12a, 12b provided on the folded portions 10a, 10b are fitted into the fitting openings 16a, 16b formed between the locking piece portion 15 and the second side wall portion 6.

[0035] In this manner, the assembly of box 1 is completed (see FIG. 3). The assembled box 1 has two folded portions 10a, 10b folded onto the inner surface of the opposing second side wall portions 6, and the folded portion 10a, which is folded in half in one diagonal direction to form a triangle, has engagement holes 19 formed therein that detachably engage with corners on one diagonal of the ice pack 100, thereby serving as a support means for supporting the ice pack 100.

[0036] In this manner, in the box 1 of this embodiment, the folded-in portions 10a, 10b provided between the adjacent first side wall portion 4 and second side wall portion 6 are folded inward in two by making valley folds at the third fold line 7 and the fourth fold line 8 and mountain folds at the fifth fold line 9, while the first side wall portion 4 and the second side wall portion 6 are raised from the bottom portion 2 by making valley folds at the first fold line 3 and the second fold line 5, and the folded-in portions 10a, 10b are folded toward the inner surface of the second side wall portion 6 to form the second side wall portion 6. A box can be assembled from a single sheet by the simple procedure of placing the sheet on the inner surface of the second side wall portion 6, and from this state, folding the locking piece 15 provided on the open edge of the second side wall portion 6 at the sixth fold line 14, and fitting the protrusions 12a, 12b provided on the open edges of the folded-in portions 10a, 10b folded toward the inner surface of the second side wall portion 6 into fitting openings 16a, 16b formed between the locking piece 15 and the second side wall portion 6.

[0037] Of the two folded portions 10a, 10b folded onto the inner surface of the opposing second side wall portion 6, folded portion 10a in one diagonal direction has engagement holes 19 formed therein for releasably engaging corners of ice pack 100 on one diagonal. Thus, by engaging one diagonal corner of ice pack 100 with engagement hole 19 formed in folded portion 10a in one diagonal direction and engaging the other diagonal corner with engagement hole 19 formed in folded portion 10a in the other diagonal direction, ice pack 100 can be stably supported at a predetermined position within box 1.

[0038] Furthermore, in this example, the engagement hole 19 formed in the folded portion 10a is formed in a position close to the open edge of the second side wall portion 6, so that the ice pack 100 engaged with the engagement hole 19 is supported on the opening side opening upward of the box 1, thereby ensuring a large storage space within the box 1, and by cooling the heat retained at the upper part of the box 1 with the ice pack, an efficient cooling effect can be obtained.

[0039] In addition, in this example, the engagement hole 19 formed in the folded portion 10a in one diagonal direction is located on the diagonal line L2 that intersects at the midpoint C of the imaginary line L1 that divides the opposing second side wall portion 6 into left and right at their respective center positions, so that the ice pack 100 can be supported in a more stable state, and the ratio between the opening area of ​​the opening of the box 1 and the planar area of ​​the ice pack 100 can be made closer, thereby achieving a more efficient cooling effect.

[0040] Incidentally, there is no particular limitation on the ice pack that can be used in the box of the present invention, but it is preferable that the ice pack be a cold storage container type (hard type, blow molded container type) ice pack that is in the form of a roughly rectangular plate and has a flat storage area on the inside for storing the refrigerant storage medium, as disclosed in, for example, JP 2001-253437 A, JP 2004-293841 A, JP 2006-97984 A, etc.

[0041] Furthermore, in the box body 1a of the present invention, the configurations of the protrusion portion 12a, the recess 13, the fitting opening 16a, and the connecting portion 17 are not limited to the shapes exemplified, and the protrusion portion 12a, the recess 13, the fitting opening 16a, and the connecting portion 17 may be provided in multiple locations. [Explanation of symbols]

[0042] 1 box 2 bottom 3 1st fold line 4 First side wall 5 Second fold line 6 Second side wall 7 Third fold line 8 4th fold line 9 5th fold line 10a, 10b Folding section 11 Notch 12a,12b Projection piece 13 Recess 14 6th fold line 15 Locking piece 16a,16b fitting opening 17 Connection part 18 Cut 19 Engagement hole 20 7th fold line 21 Lid 100 Ice packs L1 Virtual Line L2 diagonal C intermediate position

Claims

1. A box assembled from a single sheet having a support means for supporting a rectangular plate-shaped ice pack therein, A first side wall portion is provided on two opposing sides of a rectangular bottom portion, each of which is connected via a first fold line, and a second side wall portion is provided on the other two opposing sides of the bottom portion, each of which is connected via a second fold line. The first side wall portion and the second side wall portion are connected to both side edges between the adjacent first and second side wall portions, each of which is connected via a third fold line and a fourth fold line, respectively, to form a square having the both side edges as two sides. The second side wall portion is folded in half inwardly with a diagonal line between the third fold line and the fourth fold line as a fifth fold line to form a triangle. a folded portion that is folded toward the inner surface side is provided, and protruding portions are provided on two open sides of the folded portion; and a locking piece portion is provided that is connected to the open side of the second side wall portion via a sixth fold line; an engagement opening into which the protruding piece portion provided on the folded portion is engaged is formed between the locking piece portion and the second side wall portion; and by valley-folding the locking piece portion from the sixth fold line, the protruding piece portion provided on the open side of the folded portion folded toward the inner surface side of the second side wall portion is engaged with the engagement opening; The box is also characterized in that, of the two folded portions folded toward the inner surface side of the opposing second side wall portions, one diagonal folded portion has an engagement hole formed therein for detachably engaging with a corner portion on one diagonal of the ice pack.

2. 2. The box according to claim 1, wherein the engagement hole formed in the folded portion is formed in a position close to an open edge of the second side wall portion when the folded portion is folded in half along the fifth fold line and folded toward the inner surface side of the second side wall portion.

3. The box according to claim 1 or 2, characterized in that the engagement hole formed in the folded portion in one diagonal direction is located on a diagonal line that intersects at the midpoint of an imaginary line that divides the opposing second side wall portions into left and right halves at their respective center positions.

Images