Pallet integral packaging box

Abstract

To enable a side wall to be maintained in an upright state without requiring human labor.SOLUTION: In a pallet integral packaging box, a box body fixed to an upper surface of a cardboard pallet includes: a rectangular bottom plate; the front and rear side walls and the left and right side walls provided around the bottom plate; and the front and rear support walls that are connected to the left and right side walls and that maintain the front and rear side walls in an upright state. Wave-shaped engagement parts are provided at both left and right ends of the front and rear side walls and at the end parts of the front and rear support walls on the side facing the front and rear side walls. When the front and rear side walls are raised, the engagement parts are engaged with each other to generate a frictional force, thereby maintaining the front and rear side walls in an upright state.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a packaging box formed integrally with a corrugated board pallet. [Background technology]

[0002] Patent Document 1 discloses a pallet-integrated packaging box in which a sheet-like base member is fixed to the top surface of a cardboard pallet, and side walls formed integrally with the base member are folded at fold lines to stand the pallet up, and then a cover body is placed over the pallet from above. The side wall is provided with a deployable stopper so that the side wall can be kept standing without manual intervention when the cover body is placed over the side wall. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-182279 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in Patent Document 1, when placing the cover body from above, it is necessary to deploy stoppers provided on the side walls to keep the side walls upright, but the task of deploying the stoppers must be done manually, which is cumbersome.

[0005] SUMMARY OF THE PRESENT DISCLOSURE In view of the above problems, an object of the present invention is to provide a pallet-integrated packaging box capable of maintaining the side walls in an upright position without requiring manual labor. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention is configured as follows. That is, in a pallet-integrated packaging box consisting of a cardboard pallet, a box body formed by folding up a single piece of cardboard and fixed to the top surface of the pallet, and a cardboard cover body attached to the top of the box body, the box body has a rectangular bottom plate, front and rear side walls and left and right side walls arranged around the bottom plate, and front and rear support walls connected to the left and right side walls and maintaining the front and rear side walls in an upright position, and wave-shaped engagement portions are provided on both the left and right ends of the front and rear side walls and on the ends of the front and rear support walls facing the front and rear side walls.

[0007] The front and rear side walls may be provided with engagement pieces on the bottom plate side thereof, which are cut and raised in association with the erection of the front and rear side walls and engage with the bottom plate. Furthermore, inclined portions may be provided below the engagement portions provided on the front and rear side walls and the front and rear support walls. Furthermore, protrusions may be provided on the lower portions of the front and rear support walls on the sides adjacent to the left and right side walls. Effect of the Invention

[0008] In the present invention, by providing wave-shaped engaging portions on both the left and right ends of the front and rear side walls and on the ends of the front and rear support walls on the front and rear side wall sides, when the front and rear side walls are erected, the engaging portions engage with each other to generate frictional force, thereby maintaining the front and rear side walls in an upright state, so that the front and rear side walls can be easily maintained in an upright state with approximately a single action. Furthermore, if engaging pieces are provided on the bottom plate side of the front and rear side walls, which are cut and raised in conjunction with the standing movement of the front and rear side walls and engage with the bottom plate, frictional forces can be generated not only between the front and rear side walls and the front and rear support walls, but also between them and the bottom plate, making it possible to maintain the front and rear side walls in an upright state. Furthermore, by providing inclined portions below the engaging portions provided on the front and rear side walls and the front and rear support walls, frictional force can be generated not only by the engagement between the engaging portions but also by the engagement between the inclined portions, thereby making it possible to maintain the front and rear side walls in an upright state. Furthermore, if protrusions are provided on the lower parts of the front and rear support walls on the sides adjacent to the left and right side walls, the front and rear support walls will be constantly biased toward the front and rear side walls, making the engagement with the front and rear side walls more secure and enabling the upright state to be maintained well. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a pallet-integrated packaging box according to the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a development view showing a state before the box bodies constituting the packaging box are assembled. [Figure 4] FIG. 11 is a perspective view showing the state before the box body is assembled. [Diagram 5] FIG. 11 is an enlarged perspective view showing a state in which the box body is being assembled. [Figure 6] FIG. 11 is an enlarged perspective view showing the box body in the middle of being assembled. [Figure 7] FIG. 11 is an enlarged perspective view showing the box body in the middle of being assembled. [Figure 8] FIG. 11 is an enlarged perspective view showing the box body in the middle of being assembled. [Figure 9] 1 is an enlarged perspective view showing the state in which the left and right side walls and the front and rear support walls of the box body are assembled. FIG. [Figure 10] 1 is a perspective view showing a state before the front and rear side walls of the box are erected. FIG. [Figure 11] 11 is a perspective view showing a state in which the front wall of the box is being erected. FIG. [Figure 12] FIG. 11 is a perspective view showing the front wall in the middle of being erected. [Figure 13] FIG. 13 is a perspective view showing a state in which the front wall is raised. [Figure 14] FIG. 13 is a perspective view showing the front wall in an upright position. [Figure 15] 13 is an enlarged view showing an engagement state between the engagement portions of the front side wall and the front support wall and between the inclined portions. FIG. [Figure 16]13 is an enlarged view showing an engagement state between the engagement piece and the bottom plate. FIG. [Figure 17] 13 is an enlarged view showing an engagement state between the engagement portions of the rear side wall and the rear support wall and between the inclined portions. FIG. [Figure 18] FIG. 2 is a perspective view showing the box body in an assembled state. [Figure 19] 13A and 13B are diagrams showing other embodiments of the engagement portion and the inclined portion. [Figure 20] 13A and 13B are diagrams showing another embodiment of the engagement piece. BEST MODE FOR CARRYING OUT THEINVENTION

[0010] Hereinafter, the best mode for carrying out the present invention will be described with reference to Fig. 1 to Fig. 20. Fig. 1 is a perspective view showing a pallet-integrated packaging box according to the present invention, and Fig. 2 is an exploded perspective view of the same packaging box. As shown in Figures 1 and 2, the pallet-integrated packaging box 1 of the present invention is composed of a cardboard pallet 2, a cardboard box body 3 fixed to the upper surface of the pallet 2, and a cardboard cover body 4 that is placed over the box body 3 from above. The pallet 2 is configured to include a horizontally long rectangular base 21, a horizontally long rectangular top plate 22, and a number of girder members 23 interposed between the base 21 and the top plate 22. Spaces 24 are provided between the girder members 23 for inserting the forks of a forklift, and notches 22a are provided in the top plate 22 at positions corresponding to the spaces 24. The cover body 4 is formed in a rectangular parallelepiped shape and includes a top plate 41 and front, rear, left and right side walls (only a front wall 42 and a left side wall 43 are shown in FIGS. 1 and 2) provided around the periphery of the top plate 41.

[0011] Next, the configuration of the box 3 will be described with reference to FIGS. As shown in FIG. 2, the box body 3 is configured to include a bottom plate 31, front and rear side walls 32, 33 and left and right side walls 34, 35 arranged around the bottom plate 31, and front and rear support walls 36, 37 connected to the left and right side walls 34, 35 and configured to maintain the front and rear side walls 32, 33 in an upright state. The left and right side walls 34, 35 and the front and rear support walls 36, 37 are formed with approximately the same height dimension, and the front and rear side walls 32, 33 are formed with a height dimension slightly more than twice that of the left and right side walls 34, 35 and the front and rear support walls 36, 37. In addition, the front side wall 32 is formed larger than the width direction (left and right direction) dimension of the rear side wall 33, and the front support wall 36 is formed smaller than the width direction (left and right direction) dimension of the rear support wall 37.

[0012] FIG. 3 is an exploded view showing the state of the box body 3 before it is assembled, and FIG. 4 is a perspective view of the same. The box body 3 is formed by folding up a sheet of cardboard shown in FIGS. 3 and 4 along multiple creases. As shown in Figures 3 and 4, the bottom plate 31 has a horizontally long rectangular shape, and the front and rear side walls 32, 33 and the front and rear support walls 36, 37 are connected to the front and rear (top and bottom in Figure 3) sides via folds A1, A2. The front and rear support walls 36, 37 are double walls, and consist of outer walls 36a, 37a connected to the bottom plate 31 via the fold A2, and inner walls 36b, 37b connected to the outer walls 36a, 37a via double folds B1, B2. The front and rear side walls 32, 33 and the front and rear support walls 36, 37 are divided by cuts C1, C2, and the boundaries between the front and rear side walls 32, 33 and the outer walls 36a, 37a of the front and rear support walls 36, 37 are provided with wave-shaped engagement parts 32a, 33a and 36c, 37c, and inclined parts 32b, 33b and 36d, 37d, respectively. Furthermore, the outer walls 36a, 37a of the front and rear support walls 36, 37 are provided with protrusions 36e, 37e protruding to the position of a slit D provided inside the fold A2 on the sides adjacent to the left and right side walls 34, 35. Furthermore, the inner walls 36b, 37b of the front and rear support walls 36, 37 are provided with locking protrusions 36f, 37f that engage with the engagement holes 31a, 31b provided in the bottom plate 31 when folded at the double folds B1, B2. Furthermore, on the bottom plate 31 side of the front and rear side walls 32, 33, inverted trapezoidal engagement pieces 32c, 33c are provided in two positions in the left and right direction via a fold K provided inside the fold A1, and the engagement pieces 32c, 33c and the bottom plate 31 are divided by a slit L.

[0013] 3, left and right side walls 34, 35 are connected to the left and right sides of the bottom plate 31 via a fold line E. A front reinforcing wall 38 interposed between the outer wall 36a and the inner wall 36b of the front support wall 36 is connected to one end of the left and right side walls 34, 35 via a fold line F1, and a rear reinforcing wall 39 interposed between the outer wall 37a and the inner wall 37b of the rear support wall 37 is connected to the other end of the left and right side walls 34, 35 via a fold line G. The front reinforcing wall 38 includes an outer wall 38a connected to the left and right side walls 34, 35 via the fold F1, an outer wall 38b connected to the outer wall 38a via a fold F2, an inner wall 38c connected to the outer wall 38b via a fold F3, and an inner wall 38d connected to the inner wall 38c via a fold F4, and is formed into a hollow rectangular tube by folding along the folds F1 to F4. In addition, the left and right side walls 34, 35 are provided with trapezoidal locking pieces 34a, 35a that engage with the engagement holes 38e provided in the inner wall 38c of the front reinforcing wall 38 at positions close to the front reinforcing wall 38 so as to be expandable along the fold H. The front and rear support walls 36, 37 and the front and rear reinforcing walls 38, 39 are divided by cuts J1, J2.

[0014] Next, the assembly of the box body 3 will be described with reference to FIGS. First, as shown in FIG. 5, the left side wall 34 is folded vertically along the crease E to erect the left side wall 34. Next, the front reinforcing wall 38 is assembled to be connected to the left side wall 34 via the crease F1. As described above, the front reinforcing wall 38 has the outer wall 38a, the outer wall 38b, the inner wall 38c, and the inner wall 38d connected to each other via the creases F1 to F4. Therefore, as shown in FIG. 6, the respective portions 38a to 38d are folded sequentially along the creases F1 to F4 to form a hollow rectangular tube. As shown in FIG. 7, the left side wall 34 and the front reinforcing wall 38 are integrally assembled by engaging the locking piece 34a provided on the left side wall 34 with the engagement hole 38e provided on the inner wall 38c with the inner wall 38d in contact with the inside of the left side wall 34. At the same time, as shown in Figs. 5 to 7, the rear reinforcing wall 39 connected to the left side wall 34 via the fold line G is folded at a right angle along the fold line G.

[0015] Next, as shown in Figure 8, the outer wall 36a of the front support wall 36 is folded along fold A2 and raised along the outer wall 38a of the front reinforcing wall 38, and the inner wall 36b of the front support wall 36 is folded downward at double fold B1 so as to follow the inner wall 38c of the front reinforcing wall 38, and the locking protrusion 36f provided on the inner wall 36b of the front support wall 36 is engaged with the engagement hole 31a provided in the bottom plate 31, thereby assembling the front support wall 36 with the front reinforcing wall 38 interposed between the outer wall 36a and the inner wall 36b. As shown in FIG. 8, the outer wall 37a of the rear support wall 37 is folded along fold A2 and raised along the outer surface of the rear reinforcing wall 39, and the inner wall 37b of the rear support wall 37 is folded downward at double fold B2 along the inner surface of the rear reinforcing wall 39, and the locking protrusion 37f provided on the inner wall 37b of the rear support wall 37 is engaged with the engagement hole 31b provided in the bottom plate 31, thereby assembling the rear support wall 37 with the rear reinforcing wall 39 interposed between the outer wall 37a and the inner wall 37b. By assembling the front and rear support walls 36, 37 as described above, protrusions 36e, 37e are provided at the lower portions of the sides adjacent to the left and right side walls 34, 35, respectively.

[0016] Thereafter, similar assembly is carried out on the right side wall 35 side, completing the assembly of the left and right side walls 34, 35 and the front and rear support walls 36, 37 as shown in FIG.

[0017] Next, from the state shown in Fig. 10, the front wall 32 is folded along the fold A1 and gradually raised as shown in Figs. 11 and 12. As a result, the engagement piece 32c connected to the front wall 32 via the fold K is bent obliquely upward along the fold K and is pulled toward the front wall 32 while being cut and raised from the bottom plate 31 at the cut L portion. When the front wall 32 is raised vertically from this state as shown in Figures 13 and 14, the corrugated engagement portion 32a and the inclined portion 32b provided at both the left and right ends of the front wall 32 engage with the corrugated engagement portion 36c and the inclined portion 36d provided on the front support wall 36 as shown in Figure 15. The engagement piece 32c connected to the front wall 32 is formed in an inverted trapezoid shape, and is pulled toward the front wall 32 to engage with the bottom plate 31 at the slit L as shown in Figure 16. As the engagement piece 32c is cut and raised from the bottom plate 31, the portion connected to the front wall 32 is recessed below the bottom plate 31 as shown in Figures 15 and 16. However, since the top plate 22 of the pallet 2 to which the box body 3 is fixed is provided with a notch 22a at a position corresponding to the engagement piece 32c, the cutting and raising operation of the engagement piece 32c is not hindered. As described above, the engagement of the engaging portions 32a, 36c and the inclined portions 32b, 36d generates a frictional force between the front wall 32 and the front support wall 36, so that the upright state of the front wall 32 can be favorably maintained. In addition, the engagement of the engaging piece 32c with the bottom plate 31 also generates a frictional force, so that the upright state of the front wall 32 can be assisted.

[0018] Thereafter, the rear side wall 33 is similarly folded along the fold A1 to stand it up, and as shown in FIG. 17, the corrugated engagement portions 33a and inclined portions 33b on both the left and right ends thereof are engaged with the corrugated engagement portions 37c and inclined portions 37d on the rear support wall, and as shown in FIG. 16, the engagement piece 33c connected to the rear side wall 33 via the fold K is engaged with the bottom plate 31, thereby completing the assembly of the box body 3 as shown in FIG. 18.

[0019] In actual use of the pallet-integrated packaging box 1 of the present invention, for example, the box body 3 may be shipped in a cardboard factory in an assembled state up to the stage before the front and rear side walls 32, 33 are raised as shown in Figure 10, and the contents (products) may be stored in the box body 3 in this state at a production factory. After that, the front and rear side walls 32, 33 are raised as shown in Figure 18 to completely assemble the box body 3. Then, as shown in Figures 1 and 2, the cover body 4 is attached from above the box body 3, and the cover body 4 and pallet 2 are fixed together using adhesive tape, bands, or the like. Furthermore, the pallet-integrated packaging box 1 can be reused. When not in use, the box body 3 can be stored without taking up too much space by returning it to a state in which the front and rear side walls 32, 33 are unfolded as shown in FIG. 10 (i.e., the state in which it is shipped from the cardboard factory). When it is to be reused, the front and rear side walls 32, 33 can be raised again as shown in FIG. 18.

[0020] As described above, in the present invention, when assembling the box body 3, the front and rear side walls 32, 33 are folded vertically along the crease A1 to stand up, and the engagement portions 32a, 33a and the inclined portions 32b, 33b provided on the front and rear side walls 32, 33 are engaged with the engagement portions 36c, 37c and the inclined portions 36d, 37d provided on the front and rear support walls 36, 37, respectively, thereby generating frictional force between the front and rear side walls 32, 33 and the front and rear support walls 36, 37, thereby maintaining the front and rear side walls 32, 33 in an upright state. Therefore, the front and rear side walls 32, 33 can be easily maintained in an upright state with approximately one operation. In addition, as the front and rear side walls 32, 33 are raised, the engagement pieces 32c, 33c connected to the front and rear side walls 32, 33 via the fold K bend diagonally upward along the fold K and are cut and raised from the bottom plate 31 at the slit L, while being pulled toward the front and rear side walls 32, 33, and engage with the bottom plate 31 at the slit L, thereby generating a frictional force between the engagement pieces 32c, 33c and the bottom plate 31, thereby assisting the front and rear side walls 32, 33 in being raised. Furthermore, protrusions 36e, 37e are provided on the lower parts of the front and rear support walls 36, 37 on the sides adjacent to the left and right side walls 34, 35, so that the front and rear support walls 36, 37 are always biased toward the front and rear side walls 32, 33, thereby ensuring the engagement between the engagement portions 32a, 33a and 36c, 37c and between the inclined portions 32b, 33b and 36d, 37d.

[0021] It should be noted that the present invention is not limited to the above-described embodiment, and can be modified as appropriate. For example, the front and rear side walls 32, 33 and the front and rear support walls 36, 37 are provided with the engagement parts 32a, 33a and 36c, 37c, and the inclined parts 32b, 33b and 36d, 37d, respectively, but as shown in Fig. 19(a), the inclination direction of the inclined parts 32b, 33b and 36d, 37d may be opposite to that of the embodiment. Also, as shown in Fig. 19(b), instead of providing the inclined parts 32b, 33b and 36d, 37d, vertical linear engagement surfaces 32d, 33d and 36g, 37g may be provided. Furthermore, as shown in Fig. 19(c), the inclined parts 32b, 33b and 36d, 37d may not be provided, and the engagement parts 32a, 33a and 36c, 37c may be provided below the front and rear side walls 32, 33 and the front and rear support walls 36, 37.

[0022] In addition, instead of having an inverted trapezoidal shape, the shape of the engagement pieces 32c, 33c may be a concave arc shape as shown in FIG. 20(a), a convex arc shape as shown in FIG. 20(b), a stepped shape as shown in FIG. 20(c), a hexagonal shape as shown in FIG. 20(d), or any other shape that is likely to generate frictional force when engaging with the bottom plate 31. [Explanation of symbols]

[0023] 1 Pallet Integrated Packaging Box 2 Palettes 3 box body 4 Cover body 31 Bottom plate 31a, 31b Engagement hole 32,33 Front and rear side walls 32a, 33a Engagement part 32b,33b Slope part The engaging pieces 32c and 33c The engaging surfaces 32d and 33d The left and right side walls 34 and 35 The locking pieces 34a and 35a The front and rear support walls 36 and 37 The outer walls 36a and 37a The inner walls 36b and 37b The engaging portions 36c and 37c The inclined portions 36d and 37d The protruding portions 36e and 37e The locking protrusions 36f and 37f The engaging surfaces 36g and 37g The front and rear reinforcing walls 38 and 39 The outer wall 38a The outer side wall 38b The inner wall 38c The inner side wall 38d The engaging holes 38e The creases A1, A2, E, F1, F2, F3, F4, G, H, K The double creases B1 and B2 The cuts C1, C2, D, J1, J2, L

Claims

1. A pallet-integrated packaging box is provided, which comprises a cardboard pallet, a box body formed by folding up a single piece of cardboard and fixed to the top surface of the pallet, and a cardboard cover body attached to the top of the box body. The box body includes a rectangular bottom plate, front and rear side walls and left and right side walls provided around the bottom plate, and front and rear support walls connected to the left and right side walls and configured to hold the front and rear side walls in an upright state, A pallet-integrated packaging box characterized in that corrugated engagement portions are provided on both left and right ends of the front and rear side walls and on the ends of the front and rear support walls on the front and rear side wall sides.

2. 2. The pallet-integrated packaging box according to claim 1, wherein the front and rear side walls are provided with engagement pieces on the bottom plate side thereof which are cut and raised in association with the raising movement of the front and rear side walls and engage with the bottom plate.

3. 2. The pallet-integrated packaging box according to claim 1, wherein an inclined portion is provided below the engagement portions provided on said front and rear side walls and said front and rear support walls.

4. 2. The pallet-integrated packaging box according to claim 1, wherein said front and rear support walls are provided with protrusions at lower portions on the sides adjacent to said left and right side walls.

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