JP3122876U - Assembled paper box - Google Patents

Abstract

An object of the present invention is to make it possible to firmly engage the left and right side walls and the rear side wall, and to sufficiently increase the strength of the joint portion between them.
An assembled paper box that is assembled into a box shape by folding a sheet of thick paper, and a folding piece that is foldable to the side wall is connected to the folding contact position of the rear side wall and the left and right side walls. A step fold may be provided and both are engaged.
[Selection] Figure 3

Description

  The present invention relates to an assembled paper box made of cardboard for storing cakes and confectionery.

  Various types of assembled paper boxes have been proposed, but as a paper box for storing small cakes and confectionery, basically, from a single cardboard to a square bottom, Left and right side walls and front and rear side walls that are foldably connected, a temporary fastening piece that is foldably connected to one side of the left and right side walls, and whose free ends engage with each other, and an upper edge of at least one of the front and rear side walls In general, a lid that is connected to the head is constructed and assembled into a box by folding the cardboard.

The following documents can be cited as technologies related to the assembly paper box so far.
Registered utility model No. 3118748. JP2004-338799A. JP 2000-255545 A. Japanese Patent Laid-Open No. 9-24930.

  Although common to all of the above-described prior arts, for example, in the above Japanese Patent Laid-Open No. 9-24930 (hereinafter referred to by reference to the member number of the same publication), in assembling the box, Using the bottom (11) as a base, the left and right side walls (13) and the front and rear side walls (14) are bent and raised, the temporary fixing piece (21) on one side of the left and right side walls (13) is bent, and The ends are engaged with each other (22), but the other side of the left and right side walls (13) is provided with an engaging projection (23a), and the bent piece (19) provided on the side of the rear side wall (14). The method of fitting to the slit (23b) formed in the above is adopted.

  Such a temporary fixing method is common, but the engaging protrusion (23a) is directly fitted into the slit (23b) of the bent piece (19) of the rear side wall (14). Since only the part (23a) holds the engaged state, if the bending force acts on the part of the engaging protrusion (23a), it is easily buckled and is extremely weak. Since the slit (23b) is formed at the boundary between the side portion of the side wall (14) and the bent piece (19), the strength of the rear side wall (14) itself also decreases.

  In view of such a problem, an object of the present invention is to make it possible to firmly engage the left and right side walls and the rear side wall and to sufficiently increase the strength of the joint portion between them.

In the present invention, the following vocabulary is clarified.
The left and right side walls and the front and rear side walls referred to here depend on how to grasp the left and right side and the front and back side walls. Here, the side where the temporary fastening piece on one side of the left and right side walls is located is the front side wall. The side facing the rear wall is the rear side wall, and the left and right sides are left and right side walls.
The temporary fixing pieces on one side of the left and right side walls are usually provided with notches at their free ends, and the notches engage with each other in a partially overlapping state.
The lid connected to the upper edge of at least one of the front and rear side walls refers to a single lid, but in the present invention, an embodiment in which the lid part is connected to both upper edges of the front and rear side walls is shown. As described above, whether the number of lids is one or two, it is an object of the present invention.

In order to achieve the above object, an assembled paper box according to the present invention comprises a rectangular bottom portion 1, left and right side walls 2, 4 and front and rear side walls 3, 5 that are foldably connected to the square bottom 1. At the upper edge of at least one of the front and rear side walls 3 and 5 are connected to one side of the side walls 2 and 4 so that they can be bent and the free end portions 2a and 4a engage with each other. An assembled paper box that forms a box shape by folding the cardboard,
At the folding contact position between the rear side wall 3 and the left and right side walls 2, 4, foldable matching pieces 8, 9, 10, 11 are connected to the side walls 2, 3, 4,
The mating pieces 10 and 11 of the left and right side walls 2 and 4 are integrally provided with one-step bent portions 2A and 4A extending upward with the upper edges of the left and right side walls 2 and 4 being bent, and the one-step bent portion 2A. , 4A are provided with one-step bent portion engaging pieces 12, 13 at the upper edge, and rear wall engaging holes 14, 15 are provided at positions corresponding to the upper edges of the left and right side walls 2, 4 in the one-step bent portions 2A, 4A. Perforated,
Two steps formed at the upper ends of the mating pieces 8 and 9 of the rear side wall 3 so as to be longer than the first bent portions 2A and 4A of the left and right side walls 2 and 4 with the upper edge of the rear side wall 3 being bent. Bending portions 8A and 9A are provided, two-step bending portion engaging pieces 16 and 17 are provided on the upper edges of the two-step bending portions 8A and 9A, and the rear side wall 3 in the two-step bending portions 8A and 9A is provided. Lower slits 18 and 19 for engaging the two-step bent portion engaging pieces 16 and 17 are formed at positions corresponding to the upper edge, and the one-step bent portion is provided at a substantially intermediate position between the two-step bent portions 8A and 9A. The intermediate slits 20 and 21 for engaging the part engaging pieces 12 and 13 are formed, and when the paper box is assembled, the mating pieces 8, 9, 10 and 11 are bent inward and the one-stage bent part engaging pieces 12 and 13 are Intermediate The folds 20 and 21 are engaged, and the two-step bent portion engaging pieces 16 and 17 are bent one step to be engaged with the rear wall engaging holes 14 and 15 and the two-step bent portion engaging pieces 16 are engaged. , 17 are bent in two steps, the one-step bent portions 2A, 4A are bent in one step, and the two-step bent portion engaging pieces 16, 17 are engaged with the lower slits 18, 19 through the wall engaging holes 14, 15. After assembling, the one-step bent portions 2A, 4A and the two-step bent portions 8A, 9A are integrated and positioned substantially horizontally, and the outer edges 2C, 4C of the left and right side walls 2, 4 are The means that it is configured to contact the inner upper edge portions 2D and 4D is taken.

According to the assembled paper box according to the present invention, the left and right side walls and the rear side wall can be firmly engaged with each other, and the strength of the joint portion between them can be sufficiently increased.
Further, since the mating pieces of the left and right side walls and the rear side wall are located at the side edges of both, the strength at the mating portion is improved.

And, by engaging the two-step fold of the two-step fold portion, which is wound around the one-step fold portion, and the two-step fold portion engaging piece with the lower slit through the engagement hole for the rear wall, There is an advantage that it is difficult to disengage the two.
In addition, the two-stage bent portion including the one-stage folded portion of the one-stage fold is substantially horizontal after assembly, and an outer edge thereof is in contact with an inner upper edge portion of the left and right side walls. The upper corner where the rear side wall touches is solid.

In carrying out the present invention, it is preferable that the mating pieces 8 and 9 of the rear side wall 3 are bent inward in advance and adhered to the inner surface of the rear side wall 3.
As described above, when the mating pieces 8 and 9 of the rear side wall 3 are bent inward in advance and are attached to the inner surface of the rear side wall 3, the paper box can be developed in a complete plane and can be transported. Although only the mating pieces 10 and 11 of the left and right side walls 2 and 4 need to be bent, the mating pieces 8 and 9 and the rear side wall 3 are completely integrated. In this way, the strength can be significantly increased.

Two lid portions 25A and 25B are provided to be foldably connected to the upper edges of both the front and rear side walls 3 and 5, and handles 8C and 8D are formed by bending the lid portions 25A and 25B, and It is preferable that pressing pieces 2B and 4B that engage with the handles 8C and 8D are connected to the upper edges of both the left and right side walls 2 and 4 so as to be foldable.
Thus, the lid body 25 is composed of the two lid body portions 25A and 25B, the handles 8C and 8D are formed on them, and the holding pieces 2B and 4B are provided. Assembly paper box can be obtained

  A preferred embodiment of an assembled paper box according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view of the completed paper box, FIG. 2 is a developed view, and FIGS. 3 to 5 are perspective views showing assembly steps.

  Here, as shown in FIG. 2, the basic structure of the assembly paper box is as follows: a single thick paper (thickness of about 1 mm), a square bottom 1 and left and right side walls 2, 4 and front and rear side walls that are foldably connected thereto. 3, 5, temporary fixing pieces 6, 7 which are foldably connected to one side of the left and right side walls 2, 4 and whose free ends 2 a, 4 a engage with each other, and the front and back side walls 3, 5 The lid body 25 connected to the upper edge of at least one of the above is constructed and assembled into a box shape by folding the cardboard.

  Then, at the bending contact position between the rear side wall 3 and the left and right side walls 2, 4, foldable matching pieces 8, 9, 10, 11 are connected to the side walls 2, 3, 4. The mating pieces 10 and 11 are integrally provided with one-step bent portions 2A and 4A extending upward, with the upper edges of the left and right side walls 2 and 4 being bent, and one step at the upper edges of the one-step bent portions 2A and 4A. Bending portion engaging pieces 12 and 13 are provided, and rear wall engaging holes 14 and 15 are drilled at positions corresponding to the upper edges of the left and right side walls 2 and 4 in the one-step bent portions 2A and 4A.

  Further, the upper end of the mating pieces 8 and 9 of the rear side wall 3 is formed longer than the one-step bent portions 2A and 4A of the left and right side walls 2 and 4 with the upper edge of the rear side wall 3 as the folding position. Two-stage bent portions 8A and 9A are provided, two-stage bent portion engaging pieces 16 and 17 are provided on the upper edges of the two-step bent portions 8A and 9A, and the rear side wall at the two-step bent portions 8A and 9A. Lower slits 18 and 19 for engaging the two-step bent portion engaging pieces 16 and 17 are formed at positions corresponding to the upper edge of the upper and lower ends of the two-step bent portions 8A and 9A. Intermediate slits 20 and 21 for engaging the one-step bent portion engaging pieces 12 and 13 are formed.

In this implementation, the mating pieces 8 and 9 of the rear side wall 3 are bent inward in advance and adhered to the inner surface of the rear side wall 3.
In this way, when the mating pieces 8 and 9 of the rear side wall 3 are bent inward in advance and adhered to the inner surface of the rear side wall 3, the paper box is not developed on a complete plane, Although the bulk is high, it is only necessary to bend the mating pieces 10 and 11 of the left and right side walls 2 and 4, which is convenient at the time of assembly and is greatly improved by completely integrating the mating pieces 8 and 9 and the rear side wall 3. Strength can be increased.

Two lid portions 25A and 25B are provided to be foldably connected to the upper edges of both the front and rear side walls 3 and 5, and handles 8C and 8D are formed by bending the lid portions 25A and 25B, and Pressing pieces 2B and 4B that engage with the handles 8C and 8D are provided on upper edges of both the left and right side walls 2 and 4 so as to be foldable.
Thus, the lid body 25 is composed of the two lid body portions 25A and 25B, the handles 8C and 8D are formed on them, and the holding pieces 2B and 4B are provided. Assembly paper box can be obtained

Therefore, when assembling the paper box, from the state shown in FIG. 3, as shown in FIG. 4, the mating pieces 8, 9, 10, and 11 are bent inward and the one-step bent portion engaging pieces 12 and 13 are connected to the intermediate slit. 20 and 21 are engaged.
Next, the two-step bent portion engaging pieces 16 and 17 are bent one step to be engaged with the rear wall engaging holes 14 and 15, and the two-step bent portion engaging pieces 16 and 17 are bent into two steps. The bent portions 2A and 4A are bent one step, and the two-step bent portion engaging pieces 16 and 17 are engaged with the lower slits 18 and 19 through the wall engaging holes 14 and 15, respectively.

  As a result, after assembly, the one-step bent portions 2A, 4A and the two-step bent portions 8A, 9A are integrated and positioned substantially horizontally as shown by the phantom line in FIG. 2C and 4C come into contact with the inner upper edge portions 2D and 4D of the left and right side walls 2 and 4, and the left and right side walls 2 and 4 are strengthened.

  The assembly paper box according to the present invention can be applied to various types of boxes such as cakes and confectionery as long as it is of a type cut out from a single cardboard, and its application range is wide.

The perspective view of the whole assembly paper box concerning the present invention. The expansion | deployment top view of the whole assembly paper box which concerns on this invention. The perspective view which shows one assembly process of an assembly paper box by this invention. The perspective view which shows one assembly process of an assembly paper box by this invention. The perspective view which shows one assembly process of an assembly paper box by this invention.

Explanation of symbols

1: Bottom part 2: Left side wall 2A: One-step bent part 2C: Outer edge 2D: Inner upper edge part 2a: Free end part 3: Front side wall 4: Right side wall 4A: One-step bent part 4C: Outer edge 4D: Inner upper edge part 5: Rear side wall 6: Temporary fixing piece 7: Temporary fixing piece 8: Matching piece 8A: Two-stage bent portion 9: Matching piece 9A: Two-step bent portion 10: Matching piece 11: Matching piece 12: One-step bent portion engaging piece 13: One-step bent portion engaging piece 14: Rear wall engaging hole 15: Rear wall engaging hole 16: Two-step bent portion engaging piece 17: Two-step bent portion engaging piece 18: Lower slit 19: Lower slit 20: Intermediate slit 21: Intermediate slit 25: Lid 25A: Lid part 25B: Lid part

Claims (3)

From one sheet of paper, the bottom 1 of the square, the left and right side walls 2, 4 and the front and rear side walls 3, 5 that are foldably connected to this, and one side of the left and right side walls 2, 4 are foldably connected, and The free end portions 2a, 4a are engaged with each other, and the temporary fastening pieces 6, 7 and the lid body 25 connected to the upper edge of at least one of the front and rear side walls 3, 5 are formed. An assembly paper box to be assembled into,
At the folding contact position between the rear side wall 3 and the left and right side walls 2, 4, foldable matching pieces 8, 9, 10, 11 are connected to the side walls 2, 3, 4,
The mating pieces 10 and 11 of the left and right side walls 2 and 4 are integrally provided with one-step bent portions 2A and 4A extending upward with the upper edges of the left and right side walls 2 and 4 being bent, and the one-step bent portion 2A. , 4A are provided with one-step bent portion engaging pieces 12, 13 at the upper edge, and rear wall engaging holes 14, 15 are provided at positions corresponding to the upper edges of the left and right side walls 2, 4 in the one-step bent portions 2A, 4A. Perforated,
Two steps formed at the upper ends of the mating pieces 8 and 9 of the rear side wall 3 so as to be longer than the first bent portions 2A and 4A of the left and right side walls 2 and 4 with the upper edge of the rear side wall 3 being bent. Bending portions 8A and 9A are provided, two-step bending portion engaging pieces 16 and 17 are provided on the upper edges of the two-step bending portions 8A and 9A, and the rear side wall 3 in the two-step bending portions 8A and 9A is provided. Lower slits 18 and 19 for engaging the two-step bent portion engaging pieces 16 and 17 are formed at positions corresponding to the upper edge, and the one-step bent portion is provided at a substantially intermediate position between the two-step bent portions 8A and 9A. The intermediate slits 20 and 21 for engaging the part engaging pieces 12 and 13 are formed, and when the paper box is assembled, the mating pieces 8, 9, 10 and 11 are bent inward and the one-stage bent part engaging pieces 12 and 13 are Intermediate The folds 20 and 21 are engaged, and the two-step bent portion engaging pieces 16 and 17 are bent one step to be engaged with the rear wall engaging holes 14 and 15 and the two-step bent portion engaging pieces 16 are engaged. , 17 are bent in two steps, the one-step bent portions 2A, 4A are bent in one step, and the two-step bent portion engaging pieces 16, 17 are engaged with the lower slits 18, 19 through the wall engaging holes 14, 15. After assembling, the one-step bent portions 2A, 4A and the two-step bent portions 8A, 9A are integrated and positioned substantially horizontally, and the outer edges 2C, 4C of the left and right side walls 2, 4 are An assembled paper box configured to contact the inner upper edge portions 2D and 4D.   The assembled paper box according to claim 1, wherein the mating pieces (8, 9) of the rear side wall (3) are bent inward in advance and adhered to the inner surface of the rear side wall (3).   Two lid portions 25A and 25B are provided to be foldably connected to the upper edges of both the front and rear side walls 3 and 5, and handles 8C and 8D are formed by bending the lid portions 25A and 25B. The assembled paper box according to claim 1 or 2, wherein pressing pieces 2B, 4B engaging with the handles 8C, 8D are connected to the upper edges of both the side walls 2, 4 so as to be foldable.

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