Packing box

Abstract

To provide an easily movable packing box in an opened state.SOLUTION: A packaging box 1 has a top surface part, a bottom surface part and a cylindrical body part positioned between the top surface part and the bottom surface part. The body part has a pair of right and left first side face part 11 (or 13) and a pair of front and back second side face part 12 (or 14). The top surface part is composed of a pair of right and left first flap 21 (or 23) continued to an upper end of the first side face part 11 (or 13) and a pair of front and back second flap 22 (or 24) continued to an upper end of the second side face part 12 (or 14). The first side face part 11 (or 13) has a handhole part 11c (or 13c), and the first flap 21 (or 23) has a fixed flap 21b (or 23b) inserted into the handhole part 11c (or 13c) and engageable.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging box. [Background technology]

[0002] 2. Description of the Related Art Conventionally, it has been known that heavy articles are stored in packaging boxes and transported. The stored articles are sometimes used in an unpackaged state.

[0003] As an example of this type of packaging box, Patent Document 1 discloses a packaging box in which the flap on the top surface is configured so as not to return. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-348974 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the invention described in Patent Document 1 does not have a structure to assist in carrying the packaging box, so there is a risk that the packaging box may not be easily moved when opened.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a packaging box that is configured to be easily moved in an opened state. [Means for solving the problem]

[0007] One aspect of the present invention is a packaging box having a top surface, a bottom surface, and a cylindrical body portion located between the top surface and the bottom surface, wherein the body portion has a pair of first side surfaces (left and right) and a pair of second side surfaces (front and back), the top surface portion is composed of a pair of first flaps (left and right) connected to the upper ends of the first side surfaces, and a pair of second flaps (front and back) connected to the upper ends of the second side surfaces, the first side surfaces having a hand hole, and the first flaps having fixing flaps that can be inserted into and fitted into the hand hole. [Effects of the Invention]

[0008] According to the present invention, by engaging the fixing flap with the hand hole, it is possible to fix the flap on the top surface so that it does not return when the packaging box is opened, and since the engaging portion also serves as a handle portion, the packaging box can be easily moved when opened. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of a packaging box according to an embodiment of the present invention. [Figure 2] FIG. 2 is a perspective view of a packaging box according to an embodiment of the present invention during transportation. [Figure 3] 1 is an oblique view of the top surface of a packaging box according to an embodiment of the present invention after opening. FIG. [Figure 4] 4A and 4B are enlarged views of the packaging box of FIG. 1 and a cross-sectional view of IVa and IVb-IVb, respectively. [Figure 5] 1 is a blank sheet for a packaging box according to one embodiment of the present invention. [Figure 6] FIG. 6 is an enlarged view of VI of the blank sheet in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will now be described in detail with reference to the drawings.

[0011] Fig. 1 is a perspective view of a packaging box 1 according to one embodiment of the present invention after it has been opened. Fig. 2 is a perspective view of the packaging box 1 according to this embodiment during transportation before it has been opened. Fig. 3 is a perspective view of the top surface of the packaging box according to this embodiment after it has been opened. The packaging box 1 according to this embodiment, which will be described in detail later, is transported while containing a heavy item, and the user opens the packaging box 1, fits the fixing flaps 21b, 23b on the outer flaps 21, 23 into parts of the hand hole portions 11c, 13c having flaps (hereinafter also referred to as hand hole flaps) formed on the first side surface portions 11, 13, folds the fold-in portions 31, 32 outward, and uses the packaging box 1 while maintaining the opened state.

[0012] 1 and 2, packaging box 1 has a top surface and a bottom surface that are parallel to each other and face each other in the up-down direction, and a cylindrical body portion located between the top surface and the bottom surface. The body portion has a pair of first side surface portions 11, 13 that are parallel to each other and face each other in the left-right direction, and a pair of second side surface portions 12, 14 that are parallel to each other and face each other in the front-rear direction and perpendicular to first side surface portions 11, 13. In addition, the top surface portion has a pair of outer flaps 21, 23 that are connected to first side surface portions 11, 13, respectively, and a pair of inner flaps 22, 24 that are located inside outer flaps 21, 23 and connect to second side surface portions 12, 14, respectively.

[0013] The top surface comprises a pair of first outer flaps 21, 23 connected to the first side surface portions 11, 13 at their upper edges, the fifth and seventh creases L5 and L7, and a pair of first inner flaps 22, 24 located inside the first outer flaps 21, 23 and connected to the second side surface portions 12, 14 at their upper edges, the sixth and fourth creases L6 and L4. As described below, when the packaging box 1 is assembled, the first inner flaps 22, 24 butt their free edges together, so that the first outer flaps 21, 23 and the first inner flaps 22, 24 overlap. The top surface is formed by sealing the first outer flaps 21, 23 and the first inner flaps 22, 24 together with an adhesive such as hot melt. Butting the free edges of the first inner flaps 22, 24 together ensures the strength of the packaging box 1 during transport. In this embodiment, the first outer flaps 21, 23 and the first inner flaps 22, 24 are sealed by bonding them together with adhesive or the like, but this is not limited to this, and the free end edges of the first outer flaps 21, 23 may be butted together and sealed with tape or the like.

[0014] The bottom surface portion (not shown) is composed of a pair of second outer flaps 25, 27 connected to the first side surface portions 11, 13 at their lower edges, the fifth and seventh creases L5 and L7, and a pair of second inner flaps 26, 28 located inside the second outer flaps 25, 27 and connected to the second side surface portions 12, 14 at their lower edges, the fourth and sixth creases L4 and L6. As with the top surface portion, the second inner flaps 26, 28 are arranged such that their free ends butt against each other, and the second outer flaps 25, 27 and the second inner flaps 26, 28 overlap each other. The bottom surface portion is formed by sealing the second outer flaps 25, 27 and the first inner flaps 22, 24 together by applying an adhesive such as hot melt. In this embodiment, the second outer flaps 25, 27 and the second inner flaps 26, 28 are sealed by applying adhesive or the like, but this is not limited to this, and the free end edges of the second outer flaps 25, 27 may be butted together and sealed with tape or the like.

[0015] As shown in FIGS. 1 and 2 , in packaging box 1, first side surface portions 11, 13 have hand holes 11c, 13c, and first outer flaps 21, 23 on the top surface have fixing flaps 21b, 23b and fixing flap openings 21c, 23c. Furthermore, packaging box 1 is inserted into first side surface portions 11, 13 connected to first outer flaps 21, 23 so that fixing flaps 21b, 23b fit into hand holes 11c, 13c. Hand hole flaps 11b, 13b are formed in hand holes 11c, 13c. Forming flaps in hand holes 11c, 13c prevents dust and other particles from entering packaging box 1 during transportation. In this embodiment, hand hole flaps 11b, 13b are formed in hand holes 11c, 13c, but this is not limited thereto, and the packaging box may have only hand holes. Furthermore, the fixing flap openings 21c, 23c are formed to correspond to the hand holes 11c, 13c. Specifically, the distance from the fifth score line L5 and the seventh score line L7 to the opening flap openings 21c, 23c is the same as the distance from the fifth score line L5 and the seventh score line L7 to the hand holes 11c, 13c. This allows the fixing flaps 21b, 23b to be inserted so as to fit into the hand holes 11c, 13c when the first outer flaps 21, 23 contact the first side surface portions 11, 13, as shown in FIG.

[0016] Fig. 4(a) is an enlarged view of IVa of the packaging box of Fig. 1, and Fig. 4(b) is a cross-sectional view of IVb-IVb of Fig. 4(a). The fixing flaps 21b, 23b are composed of folding lines L21a, L23a parallel to the fifth line L5 and the seventh line L7 of the first outer flaps 21, 23, and cut lines L21c, L23c connected to both ends of the folding lines L21a, L23a and located on the free edge side of the first outer flaps 21, 23, and have at least one fitting portion 21a, 23a on the cutting line side. In this embodiment, the fixing flaps 21b, 23b are formed with a pair of cut lines L21b, L23b (see Fig. 2) to facilitate insertion into the hand holes 11c, 13c, as described below. In this embodiment, the fixing flaps 21b, 23b also have a pair of fitting portions 21a, 23a (see Fig. 1).

[0017] Hand hole flaps 11b, 13b are formed on the first side surface portions 11, 13 by folding lines L11a, L13a and cut lines L11b, L13b. Hand hole flaps 11b, 13b are inserted into the packaging box 1 to form hand hole portions 11c, 13c. These hand hole portions 11c, 13c are formed at positions where the fastening flaps 21b, 23b can be inserted by folding the first outer flaps 21, 23 outward. The hand hole portions 11c, 13c are formed in rounded rectangular shapes. For example, the folding line L23a of the fastening flap 23b and the folding line L13a of the hand hole flap 13b are formed at positions the same length from the seventh score line. This makes it easier to insert the fastening flap 21b into the hand hole portion 11c by folding the first outer flap 21 outward. Similarly, the fold line L21a of the fixing flap 21b and the fold line L11a of the hand hole flap 11b are also formed at positions the same length from the fifth score line L5.

[0018] The second side surface portions 12, 14 and the first inner flaps 22, 24 each have a pair of fold-in portions 31, 32 formed with a pair of cut lines L31, L32 extending from the second side surface portions 12, 14 to the first inner flaps 22, 24 (see FIG. 1, etc.). The fold-in portions 31, 32 fold the first inner flaps 22, 24 outward, thereby fixing the first inner flaps 22, 24 in the folded state. This prevents the first inner flaps 22, 24 from spontaneously returning inward. While the present embodiment has fold-in portions, this is not limiting and any other configuration may be used as long as the first inner flaps 22, 24 are prevented from returning inward.

[0019] Then, as shown in Figures 2 and 3, the packaging box 1 is opened, the first outer flaps 21 and 23 are folded outward, and the fixing flaps 21b and 23b are inserted into the hand holes 11c and 13c, and are fitted by the fitting portions 21a and 23a, so that the first outer flaps 21 and 23 can be fixed, respectively, resulting in the state shown in Figure 1, and the user can insert their hands through the fixing flaps and move easily.

[0020] The packaging box 1 of this embodiment is formed from the blank sheet shown in Fig. 5. Fig. 6 is an enlarged view of VI of the blank sheet of Fig. 5.

[0021] This blank sheet has a rectangular first surface portion (first side surface portion) 11 that forms the side surface of the packaging box 1, and a rectangular second surface portion (second side surface portion) 12 that is connected to the first surface portion 11 via a second score line L2 that is parallel to the first score line L1. It also has a rectangular third surface portion (third side surface portion) 13 that is connected to the second surface portion 12 via a third score line L3 that is parallel to the second score line L2. It also has a rectangular fourth surface portion (fourth side surface portion) 14 that is connected to the first surface portion 11 via the first score line L1. Therefore, the surfaces are connected in the order of the fourth surface portion 14, the first surface portion 11, the second surface portion 12, and the third surface portion 13. Furthermore, a joint margin 15 is connected to the fourth surface portion 14 via an eighth score line L8 that is parallel to the first score line L1. In the present invention, the joint margin 15 is connected to the fourth surface portion 14 , but it may also be connected to the third surface portion 13 .

[0022] A first flap (first outer flap) 21 and a first flap (second outer flap) 25 are connected to the first surface portion 11 via a pair of parallel fifth lines L5 extending perpendicular to the first score line L1. A second flap (first inner flap) 22 and a second flap (second inner flap) 26 are connected to the second surface portion 12 via a pair of parallel sixth lines L6 extending perpendicular to the second score line L2. A third flap (first outer flap) 23 and a third flap (second outer flap) 27 are connected to the third surface portion 13 via a pair of parallel seventh lines L7 extending perpendicular to the third score line L3. Furthermore, a fourth flap (first inner flap) 24 and a fourth flap (second inner flap) 28 are connected to the fourth surface portion via a pair of parallel fourth lines L4 extending perpendicular to the first lines L1.

[0023] Of the pair of first flaps 21, 25, the first flap 21 has a fixed flap 21b, which is formed by a folding line L21a and a cut line L21c, and has a pair of fitting portions 21a on the free end side L21 side of the first flap 21. Note that in this embodiment, there is a pair of fitting portions 21a, but this is not limited to this, and there may be one fitting portion 21a, or three or more fitting portions 21a. The folding line L21a is provided at a position spaced a predetermined distance from the fifth ruled line L5.

[0024] The first surface portion 11 has a hand hole flap 11b, which is formed by a folding line L11a and a cut line L11b. The folding line L11a is located at a predetermined distance from the fifth score line L5, which is the same distance as the distance from the fifth score line L5 to the folding line L21a.

[0025] Of the pair of third flaps 23, 27, the third flap 23 has a fixed flap 23b, which is formed by a folding line L23a and a cut line L23c, and has a pair of fitting portions 23a on the free end edge L23 side of the third flap 23. Note that in this embodiment, there is a pair of fitting portions 23a, but this is not limited thereto, and there may be one fitting portion 23a, or three or more fitting portions 23a. The folding line L23a is provided at a position spaced a predetermined distance from the seventh ruled line L7.

[0026] The third surface portion 13 has a hand hole flap 13b, which is formed by a folding line L13a and a cut line L13b. As shown in Fig. 6, the folding line L13a is located at a predetermined distance D1 from the seventh score line L7, which is the same distance as the distance D2 from the seventh score line L7 to the folding line L23a.

[0027] Of the pair of second flaps 22, 26, the second flap 22 has a fold-in portion 32 formed by a pair of cut lines L32 extending from the second surface portion 12 to the second flap 22. Also, of the pair of fourth flaps 24, 28, the second flap 24 has a fold-in portion 32 formed by a pair of fold lines L31 extending from the fourth surface portion 14 to the fourth flap 24.

[0028] The packaging box 1 is formed by assembling the blank sheets shown in Fig. 5. The third surface 13 and the joint margin 15 are joined where they overlap to form a rectangular shape. In the present invention, the joint margin 15 is overlapped on the outside of the third surface 13 so as to be exposed to the outside, but the joint margin 15 may also be overlapped on the inside of the third surface 13 so as not to be exposed to the outside.

[0029] The first and third flaps 25, 27, the second and fourth flaps 26, 28 are then folded, and the first and third flaps 25, 27 are overlapped with the second and fourth flaps 26, 28 so that the second and fourth flaps 26, 28 are on the inside, and the first and third flaps 27, 26, and the second and fourth flaps 26, 28 are bonded and sealed with an adhesive such as hot melt to form a bottom surface. An article is then placed inside the bag, and the first and third flaps 21, 23, 22, and the fourth flaps 24 are folded, and the first and third flaps 21, 23 are bonded and sealed with an adhesive such as hot melt to form a top surface. The package is transported in the state shown in Fig. 2, and when in use, the user opens the top surface portion as shown in Fig. 3. Then, as shown in Fig. 1, the first outer flaps 21, 23 are folded outward, and the fastening flaps 21b, 23b of the first outer flaps 21, 23 are inserted into the hand holes 11c, 13c of the first side surface portions 11, 13, and the fitting portions 21a, 23a are fitted into the hand holes 11c, 13c to secure the first outer flaps 21, 23. The user then folds the first inner flaps 22, 24 outward and folds the tucked-in portions 31, 32 outward to secure the first inner flaps 22, 24. This allows the user to use the package 1 in the opened state, inserting their hands through the fastening flaps 21b, 23b and moving the package box 1.

[0030] As described above, the first outer flaps 21, 23 can be used while being fixed to the first side surface portions 11, 13, and the fitting portions also serve as handles, allowing the packaging box to be easily moved in an opened state. In addition, the first outer flaps and the first side surface portions form a double structure, making it easy to move even heavy items.

[0031] In order to express the contents of the present invention, the preferred embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments, and includes modifications and improvements that are obvious to those skilled in the art based on the matters described in this specification. [Explanation of symbols]

[0032] 1 packaging box 11c 13c Hand hole 21 23 First outer flap (first flap) 22 24 First inner flap (second flap) 11 13 First side part 12 14 Second side part 21b 23b Fixed flap

Claims

1. A packaging box having a top surface, a bottom surface, and a cylindrical body portion located between the top surface and the bottom surface, The body portion has a pair of first side surface portions on the left and right and a pair of second side surface portions on the front and rear, the top surface portion is composed of a pair of left and right first flaps connected to an upper end of the first side surface portion, and a pair of front and rear second flaps connected to an upper end of the second side surface portion, the first side surface portion has a hand hole portion; The first flap has a fixing flap that can be inserted into and fitted to the hand hole, the fixing flap is composed of a folding line parallel to the crease of the first flap and a first cut line connected to both ends of the folding line and positioned on the free edge side of the first flap, and has at least one fitting portion on the side of the first cut line; A packaging box according to claim 1, wherein the fixing flap has a pair of second cut lines formed thereon to facilitate insertion into the hand hole.

2. The packaging box according to claim 1 , wherein the hand hole is formed in a rectangular shape with rounded corners.

3. 3. The packaging box according to claim 2, wherein a hand hole flap is formed in the hand hole.

4. 4. The packaging box according to claim 3, further comprising a fold-in portion formed by a pair of third cut lines extending from the second side surface portion to the second flap.

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