Packing box
The packaging box design addresses the issue of inner box stability by using aligned inner and outer side walls with inwardly swingable flaps and notches, ensuring the inner box is securely held within the outer box, enhancing stability and ease of assembly.
Patent Information
- Application Number
- JP2021141742
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-08-31
- Publication Date
- 2025-07-23
- Estimated Expiration
- 2041-08-31
AI Technical Summary
Conventional packaging boxes fail to reliably prevent the inner box from falling out of the outer box when the outer box is gripped, necessitating a robust bottom wall to avoid collapse.
The packaging box design includes an outer box with aligned inner and outer side walls, inwardly swingable flaps, and notches to support the inner box with both the outer box bottom wall and inner flaps, enhancing stability and preventing the inner box from falling out.
The design effectively prevents the inner box from falling out by supporting it with both the outer box bottom wall and inner flaps, improving stability and ease of assembly while maintaining waterproofness and reducing material costs.
Smart Images
Figure 0007712152000001 
Figure 0007712152000002 
Figure 0007712152000003
Abstract
Description
Technical Field
[0001] The present invention relates to a packaging box including an outer box that houses an inner box.
Background Art
[0002] Conventionally, a packaging box including an outer box and an inner box housed in the outer box has been known (see, for example, Patent Document 1).
Prior Art Document
Patent Document
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] In a conventional packaging box, when the outer box is gripped, it is necessary to configure the bottom wall of the outer box to be robust so that the bottom wall of the outer box does not collapse and the inner box does not fall out. In view of the above points, an object of the present invention is to provide a packaging box that can more reliably prevent the inner box from falling out of the outer box than in the prior art.
Means for Solving the Problems
[0005] To achieve the above object, the packaging box of the present invention includes an outer box having a pair of opposing outer first side walls, a pair of opposing outer second side walls connected to the side edges of the outer first side walls, and an outer box bottom wall, a pair of opposing inner first side walls, a pair of opposing inner second side walls connected to the side edges of the inner first side walls, and an inner box bottom wall. An inner box is accommodated in the outer box such that the outer first side wall and the inner first side wall are aligned, and the outer second side wall and the inner second side wall are aligned. An outer flap for the inner box is bent inwardly swingably from the upper edge of the inner second side wall, an inner flap for the outer box is bent inwardly swingably from the upper edge of the outer first side wall, and a notch is formed at the side edge of the inner flap for the outer box to make the width of the inner flap for the outer box narrower than the width of the outer first side wall by at least the thickness of the outer flap for the inner box.
[0006] According to the present invention, since the notch is formed at the side edge of the inner flap for the outer box, the inner flap for the outer box can be bent inwardly first, and then the outer flap for the inner box can be bent inwardly and overlapped on the inner flap for the outer box. Therefore, the inner box can be supported not only by the outer box bottom wall but also by the inner flap for the outer box via the outer flap for the inner box. Compared with the conventional packaging box supported only by the outer box bottom wall, the packaging box of the present invention can more reliably prevent the inner box from falling out of the outer box due to the breakage of the seal of the outer box bottom wall.
[0007] In the present invention, the upper edge of the outer second side wall is configured to extend upward by at least the thickness of the outer flap for the inner box more than the upper edge of the outer first side wall, and an outer flap for the outer box is provided which is bent inwardly swingably from the upper edge. is preferable.
[0008] According to such a configuration, since the upper edge of the outer second side wall extends upward by at least the thickness of the outer flap for the inner box more than the upper edge of the outer first side wall, it is possible to prevent the outer flap for the inner box from being sandwiched and crushed between the inner flap for the outer box and the outer flap for the outer box, and the outer flap for the outer box can be easily bent inwardly.
[0009] In the present invention, a support piece that supports the inner flap for the outer box and is bent inwardly swingably from the upper edge of the inner first side wall, and a support piece that is bent from the tip edge of the support piece so as to be foldable onto the inner surface of the inner first side wall swingably, and an inner flap for the inner box that is sandwiched between the inner surfaces of the pair of inner second side walls are provided. This is preferable.
[0010] According to such a configuration, since the inner flap for the inner box is sandwiched between the inner surfaces of the pair of inner second side walls, the support piece that connects the inner flap for the inner box and the upper edge of the inner first side wall is also held in a posture bent inwardly. Since this support piece supports the inner flap for the outer box, as a result, the inner box can be more stably supported by this inner flap for the outer box via the outer flap for the inner box.
[0011] In the present invention, the shape of the outer box bottom wall is rectangular, the shape of the inner box bottom wall is a rectangular shape smaller than the outer box bottom wall, the inner first side wall and the inner second side wall are respectively continuously provided at the side edges of the inner box bottom wall, the inner first side wall and the inner second side wall are configured such that the width gradually increases toward the upper edge, the inner first side wall and the inner second side wall are continuously provided with adjacent side edges connected via a folding piece, and the folding piece is provided with a crease line extending from the inner box bottom wall so as to divide the folding piece into two, and is folded so as to be folded in two along the crease line. This is preferable.
[0012] According to such a configuration, since the inner first side wall and the inner second side wall are configured such that the width gradually increases toward the upper edge, by inserting the inner box before assembly into the outer box by pushing in the inner box bottom wall, the inner first side wall and the inner second side wall stand up along the outer first side wall and the outer second side wall. Also, the folding piece that connects the inner first side wall and the inner second side wall can be folded so as to be folded in two along the crease line. Therefore, according to such a configuration, the inner box can be easily assembled.
[0013] In the present invention, it is preferable that the inner box has a waterproof treatment on its inner surface. This is preferable.
[0014] According to such a configuration, since the inner first side wall, the inner second side wall, and the inner box bottom wall are connected by the folding pieces, even an inner box that can be easily assembled by being pushed into the outer box by simply performing a waterproof treatment on its inner surface can exhibit sufficient waterproofness and water resistance.
Brief Description of the Drawings
[0015]
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Mode for Carrying Out the Invention
[0016] With reference to the drawings, the packaging box of the embodiment of the invention will be described. Referring to FIG. 1, the packaging box 1 of the present embodiment includes an outer box 100 and an inner box 200 accommodated in the outer box 100. FIG. 2 is a cross-sectional view showing the state where the packaging box 1 of FIG. 1 is cut along the line I-I.
[0017] Figure 3 is an exploded view of the outer box 100. As shown in Figure 3, the outer box 100 is assembled by folding a single sheet of cardboard formed by punching corrugated paper, and includes a rectangular outer first side wall 110. An outer second side wall 120, which is wider than the outer first side wall 110 and rectangular, is continuously provided at the left edge of the outer first side wall 110 via a fold line L1. A second outer first side wall 110 is continuously provided at the left edge of the outer second side wall 120 via a fold line L2. A second outer second side wall 120 is continuously provided at the left edge of the second outer first side wall 110 via a fold line L3. An adhesive margin piece 130 for pasting on the inner surface of the first outer side wall 110 is continuously provided at the left edge of the second outer second side wall 120 via a fold line L4.
[0018] An inner flap 140 for the outer box, which is trapezoidal and whose width gradually narrows toward the tip, is continuously provided at the upper edge of the first outer side wall 110 located at the far right of Figure 3 via a fold line L5. Both side edges of the inner flap 140 for the outer box are cut out by cutout portions 310, and due to the cutout portions 310, the width of the inner flap 140 for the outer box is narrower than the width of the outer first side wall 110. A rectangular outer flap 150 for the outer box is continuously provided at the upper edge of the first outer second side wall 120 located second from the right in Figure 3 via a fold line L6. Note that the outer second side wall 120 is formed such that the upper edge of the outer second side wall 120 is positioned above the upper edge of the outer first side wall 110 by the thickness of the plate.
[0019] On the upper edge of the second outer first side wall 110 located third from the right in FIG. 3, a trapezoidal second inner flap 140 for the outer box, whose width gradually narrows toward the tip via a fold line L7, is continuously provided. Both side edges of the inner flap 140 for the outer box are cut out by cutout portions 310, and due to the cutout portions 310, the width of the inner flap 140 for the outer box is narrower than the width of the outer first side wall 110. On the upper edge of the second outer second side wall 120 located fourth from the right in FIG. 3, that is, the leftmost, a rectangular second outer flap 150 for the outer box is continuously provided via a fold line L8. Note that, similar to the first one, the second outer second side wall 120 is formed such that the upper edge of the outer second side wall 120 is positioned upward by the thickness of the plate compared to the upper edge of the outer first side wall 110.
[0020] On the lower edge of the first outer first side wall 110 located rightmost in FIG. 3, a trapezoidal first bottom wall piece 151, whose width gradually narrows toward the tip via a fold line L9, is continuously provided. A first hook 151a is provided on the right side edge of the first bottom wall piece 151. On the lower edge of the first outer second side wall 120 located second from the right in FIG. 3, a trapezoidal second bottom wall piece 152, whose width gradually narrows toward the tip via a fold line L10, is continuously provided. A first cutout portion 152a is provided on the left side edge of the second bottom wall piece 152. A first bottom wall paste margin 152b is provided on the right side edge of the second bottom wall piece 152.
[0021] On the lower edge of the second outer first side wall 110 located third from the right in FIG. 3, a trapezoidal third bottom wall piece 153, whose width gradually narrows toward the tip via a fold line L11, is continuously provided. A second hook 153a is provided on the right side edge of the third bottom wall piece 153. On the lower edge of the second outer second side wall 120 located fourth from the right in FIG. 3, that is, the leftmost, a trapezoidal fourth bottom wall piece 154, whose width gradually narrows toward the tip via a fold line L12, is continuously provided. A second cutout portion 154a is provided on the left side edge of the fourth bottom wall piece 154. A second bottom wall paste margin 154b is provided on the right side edge of the fourth bottom wall piece 154.
[0022] In the rightmost first outer first side wall 110 and the first bottom wall piece 151 in FIG. 3, a pair of cut lines 161a extend symmetrically about the fold line L9 so as to straddle the fold line L9 vertically. Both ends of the pair of cut lines 161a are connected by a pair of fold lines 161b, 161b parallel to each other, respectively. A fold line 161c is provided on the extension line of the fold line L9 in the middle of the pair of fold lines 161b, 161b. The first handle portion 161 is defined by the cut lines 161a, 161a and the fold lines 161b, 161b.
[0023] In the third outer first side wall 110 and the third bottom wall piece 153 from the right in FIG. 3, a pair of cut lines 162a, 162a extend symmetrically about the fold line L11 so as to straddle the fold line L11 vertically. Both ends of the pair of cut lines 162a, 162a are connected by a pair of fold lines 162b, 162b parallel to each other, respectively. A fold line 162c is provided on the extension line of the fold line L11 in the middle of the pair of fold lines 162b, 162b. The second handle portion 162 is defined by the cut lines 162a, 162a and the fold lines 162b, 162b.
[0024] FIG. 4 is a developed view of the inner box 200. As shown in FIG. 4, it is formed by punching out a cardboard formed by subjecting a corrugated paper with waterproof treatment and then folding and assembling it, and includes a rectangular inner box bottom wall 270. Inner first side walls 210 are continuously provided via fold lines L21 on a pair of short sides of the inner box bottom wall 270. Inner second side walls 220 are continuously provided via fold lines L22 on a pair of long sides of the inner box bottom wall 270.
[0025] At the upper edges of the pair of inner first side walls 210, short support pieces 230 are continuously provided via fold lines L23. At the tip edges of the pair of support pieces 230, inner box inner flaps 240 are continuously provided via fold line L24. At the upper edges of the pair of inner second side walls 220, outer flaps 250 for the inner box are continuously provided via fold line L25. At both side edges of the inner first side wall 210, folding pieces 280 are continuously provided via fold line L26. The folding piece 280 is provided with a fold line 280a extending so as to divide the corner of the inner box bottom wall 270 into two, and is configured to be foldable by folding it in half along the fold line 280a. Further, the folding piece 280 is also continuously provided at the side edge of the inner second side wall 220 via fold line L27. That is, both side edges of the inner first side wall 210 are continuously connected to the side edges of the adjacent inner second side wall 220 via the folding piece 280.
[0026] Next, a method for assembling the packaging box 1 of the present embodiment will be described. First, referring to FIG. 3, the outer first side wall 110 and the outer second side wall 120 adjacent to each other of the outer box 100 are bent at right angles via fold lines L1 to L3. Also, the adhesive margin piece 130 is bent at right angles via fold line L4 with respect to the second outer second side wall 120 and attached to the inner surface of the first outer first side wall 110. In this way, the rectangular tubular body of the outer box 100 is completed.
[0027] Also, each of the first bottom wall piece 151, the second bottom wall piece 152, the third bottom wall piece 153, and the fourth bottom wall piece 154 is bent inward at a right angle with respect to the outer first side wall 110 or the outer second side wall 120 via fold lines L9 to L12. Then, the first bottom wall adhesive margin 152b is attached to the outer surface of the first bottom wall piece 151, and the second bottom wall adhesive margin 154b is attached to the outer surface of the third bottom wall piece 153. Then, the first hook 151a is engaged with the second notch 154a, and the second hook 153a is engaged with the first notch 152a.
[0028] In this way, by engaging the first to fourth bottom wall pieces 151 to 154 with each other, the outer box bottom wall 170 shown in FIG. 5 is completed. Since the first to fourth bottom wall pieces 151 to 154 are each short in length, the outer box bottom wall 170 has an opening at the center, thereby reducing the material cost used for the outer box 100.
[0029] Also, by folding the first handle portion 161 and the second handle portion 162 at right angles along the fold lines 161c and 162c and pushing them inward, fingers can be hooked on the first handle portion 161 and the second handle portion 162. In this way, the outer box 100 with an open top is completed.
[0030] Then, referring to FIG. 6, the unassembled inner box 200 is pushed into the outer box 100 with an open top. At this time, since the inner box bottom wall 270 is smaller than the outer box bottom wall 170, the unassembled inner box 200 can be easily pushed into the outer box 100. Also, when the unassembled inner box 200 is being pushed in, the pair of inner first side walls 210 and the pair of inner second side walls 220 come into contact with the upper edges of the pair of outer first side walls 110 and the pair of outer second side walls 120 and gradually stand up with respect to the inner box bottom wall 270. At this time, the folding piece 280 is folded in half along the fold line 280a and overlapped along the outer surface of the inner second side wall 220.
[0031] Then, referring to FIG. 7, the support piece 230 is folded along the fold line L23 so as to be horizontal inward with respect to the inner first side wall 210. Also, the inner box inner flap 240 is folded downward along the fold line L24 with respect to the support piece 230. The downwardly folded inner box inner flap 240 prevents the inner second side wall 220, which is pushed inward by the self-restoring force of the folded folding piece 280, from falling inward.
[0032] Also, when the pair of inner second side walls 220 are pushed inward by the self-restoring force of the folding piece 280, the inner box inner flap 240 is clamped by the pair of inner second side walls 220, and the inner box inner flap 240 is prevented from returning upward by the self-restoring force.
[0033] Then, as shown in FIG. 8, the swingable inner flap 140 for the outer box is bent inward at right angles along fold lines L5 and L8 with respect to the outer first side wall 110. At this time, the inner flap 140 for the outer box is supported from below by the support piece 230. Also, since the width of the inner flap 140 for the outer box is narrower than the width of the outer first side wall 110, a gap is formed between the inner flap 140 for the outer box and the adjacent outer second side wall 120, and through this gap, the upper edge of the inner second side wall 220 and the outer flap 250 for the inner box can be positioned above the inner flap 140 for the outer box.
[0034] Then, as shown in FIG. 9, the swingable outer flap 250 for the inner box is bent inward at right angles along fold line L25 with respect to the inner second side wall 220. At this time, the outer flap 250 for the inner box will be supported from below by the inner flap 140 for the outer box. Finally, by bending the swingable outer flap 150 for the outer box inward at right angles along fold lines L6 and L8 with respect to the outer second side wall 120, the opening above the packaging box 1 is closed as shown in FIGS. 1 and 2, and the top plate of the packaging box 1 is formed.
[0035] According to the packaging box 1 of the present embodiment, since the notch 310 is formed at the side edge of the inner flap 140 for the outer box, after first bending the inner flap 140 for the outer box inward, the outer flap 250 for the inner box can be bent inward and overlapped on the inner flap 140 for the outer box. Therefore, the inner box 200 can be supported not only by the bottom wall 170 of the outer box but also by the inner flap 140 for the outer box via the outer flap 250 for the inner box. Compared with the conventional packaging box that was only supported by the bottom wall 170 of the outer box, the packaging box 1 of the present embodiment can more reliably prevent the seal of the bottom wall 170 of the outer box from being broken and the inner box 200 from falling out of the outer box 100.
[0036] Moreover, according to the packaging box 1 of the present embodiment, since the inner flaps 240 for the inner box are sandwiched by the inner surfaces of the pair of inner second side walls 220, the support pieces 230 connecting the inner flaps 240 for the inner box and the upper edge of the inner first side wall 210 are also held in a posture bent inward. Since this support piece 230 supports the inner flap 140 for the outer box, as a result, the inner box 200 can be more stably supported by this inner flap 140 for the outer box via the outer flap 250 for the inner box.
[0037] Moreover, according to the packaging box 1 of the present embodiment, since the upper edge of the outer second side wall 120 extends upward by at least the thickness of the outer flap 250 for the inner box more than the upper edge of the outer first side wall 110, it is possible to prevent the outer flap 250 for the inner box from being sandwiched and crushed between the inner flap 140 for the outer box and the outer flap 150 for the outer box, and the outer flap 150 for the outer box can be easily bent inward.
[0038] Moreover, according to the packaging box 1 of the present embodiment, by inserting the inner box 200 before assembly into the outer box 100 by pushing in the inner box bottom wall 270, the inner first side wall 210 and the inner second side wall 220 stand up along the outer first side wall 110 and the outer second side wall 120, and can be easily assembled. Also, since the inner box bottom wall 270 is smaller than the outer box bottom wall 170, the inner box bottom wall 270 can be easily pushed into the outer box 100. Furthermore, since the inner first side wall 210, the inner second side wall 220, and the inner box bottom wall 270 are connected by the folding pieces 280, even for the inner box 200 that can be easily assembled in this way, sufficient waterproofness and water resistance can be exhibited only by performing waterproof processing on the inner surface of the inner box. Moreover, since the inner first side wall 210 and the inner second side wall 220 are configured such that the width gradually increases toward the upper edge, a wide internal space can be secured above the inner box 200, and the accommodation volume of the inner box 200 can be increased even if the inner box bottom wall 270 is made smaller.
[0039] Further, by folding the folding piece 280 so as to be positioned between the inner second side wall 220 and the outer second side wall 120, the inner second side wall 220 is pushed inward by the self-restoring force of the folding piece 280, making the inner second side wall 220 liable to fall inward. However, according to the packaging box 1 of the present embodiment, the support piece 230 is bent inward from the upper edge of the inner first side wall 210, and since the inner flap 240 for the inner box is bent from the tip of the support piece 230 so as to be folded on the inner surface of the inner first side wall 210, it is possible to restrict the inner second side wall 220 from falling inward at both side edges of the inner flap 240 for the inner box.
[0040] Moreover, according to the packaging box 1 of the present embodiment, since the first handle part 161 and the second handle part 162 are provided at the lower end part where the gap between the inner box 200 and the outer box 100 is the largest, a large space can be secured for the first handle part 161 and the second handle part 162, making it easier to hold the outer box 100.
[0041] In the present embodiment, the outer inner flap 140, the outer outer flap 150, the inner inner flap 240, and the inner outer flap 250 that constitute all of the top plate that completely closes the upper part of the packaging box 1 have been described. However, the top plate of the packaging box of the invention is not limited to this. For example, it may be configured such that the outer inner flap, the outer outer flap, the inner inner flap, and the inner outer flap constitute a part of the top plate of the invention, and the center of the top plate is open.
[0042] Also, in the present embodiment, the case where the first handle part 161 and the second handle part 162 are provided on the outer first side wall 110 has been described. However, the handle part of the invention is not limited to this. For example, it may be provided at the lower end part of the outer second side wall, or handle parts may be provided on both the outer first side wall and the outer second side wall.
Explanation of Reference Numerals
[0043] 1 Packaging box 100 Outer box 110 Outer first side wall 120 Outer second side wall 130 Paste replacement piece 140 Inner flap for outer box 150 Outer flap for outer box 151 First bottom wall piece 151a First hook 152 Second bottom wall piece 152a First notch 152b First bottom wall paste replacement 153 Third bottom wall piece 153a Second hook 154 Fourth bottom wall piece 154a Second notch 154b Second bottom wall paste replacement 161 First handle part 161a Cutting line 161b Fold line 161c Fold line 162 Second handle part 162a Cutting line 162b Fold line 162c Fold line 170 Outer box bottom wall 200 Inner box 210 Inner first side wall 220 Inner second side wall 230 Support piece 240 Inner flap for inner box 250 Outer flap for inner box 270 Inner box bottom wall 280 Folding piece 280a Fold line 310 Notch part L1 - L12 Fold lines L21 - L25 Fold lines
Claims
1. An outer box having a pair of opposing outer first side walls, a pair of opposing outer second side walls connected to the side edges of the outer first side walls, and an outer box bottom wall, An inner box having a pair of opposing inner first side walls, a pair of opposing inner second side walls connected to the side edges of the inner first side walls, and an inner box bottom wall, wherein the inner box is housed in the outer box such that the outer first side wall and the inner first side wall are aligned and the outer second side wall and the inner second side wall are aligned, An outer flap for the inner box that is swingably bent inward from the upper edge of the inner second side wall, An inner flap for the outer box that is swingably bent inward from the upper edge of the outer first side wall, A notch formed at the side edge of the inner flap for the outer box, the width of the inner flap for the outer box being narrower than the width of the outer first side wall by at least the thickness of the outer flap for the inner box, A packaging box characterized by comprising the above.
2. The packaging box according to Claim 1, The upper edge of the outer second side wall is configured to extend upward by at least the thickness of the outer flap for the inner box from the upper edge of the outer first side wall, and The packaging box is characterized by comprising an outer flap for the outer box that is swingably bent inward from the upper edge thereof.
3. The packaging box according to Claim 1 or Claim 2, A support piece that supports the inner flap for the outer box and is swingably bent inward from the upper edge of the inner first side wall, An inner flap for the inner box that is swingably bent from the tip edge of the support piece so as to be folded onto the inner surface of the inner first side wall and is sandwiched by the inner surfaces of the pair of inner second side walls, A packaging box characterized by comprising the above.
4. The packaging box according to any one of Claims 1 to 3, The shape of the outer box bottom wall is rectangular, The shape of the inner box bottom wall is a rectangular shape smaller than the outer box bottom wall, The inner first side wall and the inner second side wall are respectively connected to the side edges of the inner box bottom wall, The inner first side wall and the inner second side wall are configured such that the width gradually increases toward the upper edge, The inner first side wall and the inner second side wall are connected to each other at adjacent side edges via a folding piece, The folding piece is provided with a crease line extending from the inner box bottom wall to divide the folding piece into two, and is configured to be foldable by folding it in half along the crease line, The folded folding piece is superimposed along the outer surface of the inner second side wall. A packaging box characterized by the above.
5. The packaging box according to Claim 4, The packaging box is characterized in that a handle portion is provided on at least one of the lower end portions of the pair of the outer first side walls and the lower end portions of the pair of the outer second side walls.
Citation Information
Patent Citations
Packaging box
CN216469093U
flower container
DE202021101791U1
JP1978009931U
JP1979044232U
JP1986093423U