Illicit opening-preventive packaging box

Abstract

To provide an illicit opening-preventive packaging box allowed to prevent the illicit opening due to distortion closer to an opening of a box body and to be positively lidded in a simple procedure.SOLUTION: An illicit opening-preventive packaging box includes a lid body 20 that extends from an opening edge 11 of a box body 10, one pair of bend pieces that extend from the opening edges 11 at left and right of the lid body 20, an insertion piece 21 that is formed at a tip of the lid body 20 and to be engaged at both sides with adjacent bend pieces upon lid closure, a for-opening removal piece 30 that is provided in the box body 10 or the lid body 20, an auxiliary piece 50 that is formed from one bend piece so as to prevent an opening of the box body 10 from getting distorted, and a distortion-preventive piece 40 formed with a guard piece 41 that is provided from the other bend piece, so that the auxiliary piece 50, the distortion-preventive piece 40 and the lid body 20 are superposed together to be lidded to the opening of the box body 10.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tamper-evident packaging box that can prevent unauthorized opening during the distribution process of a paper box. [Background technology]

[0002] Conventionally, there is a packaging box of this type proposed by the applicant previously (Patent Document 1). This packaging box is configured to prevent unauthorized opening without using adhesive means such as a sealing paper and to be opened safely. That is, a removal piece 13 that opens a release opening 12 is formed on the side of the box body 10. Furthermore, both ends of an insertion fixing piece 22A formed on the lid body 20 are engaged with the insertion cut line 21A of the inner top plate 21 so as not to be easily removed. Then, when the removal piece 13 is removed at the time of opening, the release opening 12 opens on the side of the box body 10, and the insertion fixing piece 22A can be easily released.

[0003] A packaging box that is prevented from being illegally opened during distribution is also described in Patent Document 2. This packaging box is also configured so that an opened opening can be resealed with a lid. That is, when the cover plate 30 is closed, the insertion piece 22 of the front plate 11 is inserted into the insertion hole 37 of the fold-back piece 34 to lock it, and the locking piece 36 of the cover plate 30 is inserted into the insertion hole 23 of the insertion piece 22 to lock it. At this time, the fold-back piece 34 is folded back inward so as to overlap with the inner surface of the cover plate 31. When the cover plate 30 that has been opened is closed again, the fold-back piece 34 is inserted into the insertion hole 26 of the front plate 11 to reseal the opening.

[0004] Furthermore, Patent Document 3 discloses a packaging box that can be opened with one touch. This packaging box is provided with a mechanism for locking the cover plate 9 and a function for opening the cover plate 9 with one touch after unlocking. That is, the locking mechanism is a locking mechanism in which an insertion hole 16 is formed between the cover plate 9 and the bent piece 10, an insertion piece 12 formed on the swing piece 11 is inserted into the insertion hole 16, and a side folded portion 15 of the swing piece 11 is inserted into a through hole 17 of the bent piece 10. Furthermore, the bent piece 10 is configured to rebound, and when the cover plate 9 is unlocked, the rebound of the bent piece 10 causes the cover plate 9 to jump up with one touch. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6775261 [Patent Document 2] Patent No. 6658440 [Patent Document 3] Patent No. 4676326 Summary of the Invention [Problem to be solved by the invention]

[0006] The packaging box of Patent Document 1 has both ends of the insertion fixing piece 22A engaged within the insertion cut line 21A, and when the removal piece 13 is removed during opening, the release opening 12 opens on the side of the box body 10, preventing unauthorized opening and allowing safe opening without using adhesive means such as a seal paper. However, since both ends of the insertion fixing piece 22A of the outer top plate 22 are engaged within the insertion cut line 21A of the inner top plate 21 facing the outer top plate 22, if the opening portion of the packaging box is distorted when the lid is put on, there is a risk that the position of the insertion fixing piece 22A will shift and come off the insertion cut line 21A, or a gap will occur at the opening.

[0007] Furthermore, there is a risk that the opening of the packaging box may be intentionally distorted to form a gap, and this gap may be used to remove the insertion fixing piece 22A. Thus, in conventional tamper-proof packaging boxes, the distortion occurring at the opening of the packaging box has been an issue in preventing tampering.

[0008] On the other hand, the packaging box described in Patent Document 2 has a structure in which, when the lid is closed, the insertion piece 22 is inserted into the insertion hole 37 to lock it, and the locking piece 36 is inserted into the insertion hole 23 to lock it, thereby providing a double locking structure. This makes the structure to prevent tampering complicated, and there is an issue that closing the lid requires a lot of effort.

[0009] Moreover, when closing the cover plate 30 again, the flap 34 folded back on the inside of the cover plate 31 is opened and inserted into the insertion hole 26 to reseal the opening. As a result, a separate structure for resealing the cover plate 30 is also required, further complicating the overall structure of the packaging box.

[0010] Furthermore, the packaging box described in Patent Document 3 has a structure in which the cover plate 9 can be opened with one touch due to the rebound of the bent piece 10, but the locked state of the cover body is easily disengaged. That is, the cover plate 9 is fixed to the opening of the box body by inserting the insert piece 12 into the insertion hole 16 and engaging the side folded parts 15, which are bent on both sides of the insert piece 12, with the through hole 17. Therefore, if the insert piece 12 is swung several times in the pull-out direction, the bent side folded parts 15 may gradually become horizontal, causing the insert piece 12 to come off from the insertion hole 16.

[0011] Therefore, the present invention has been devised to solve the above-mentioned problems, and aims to provide a tamper-evident packaging box in a packaging container that prevents tampering due to deformation of the opening side of the box body and can be reliably closed with a lid in a simple procedure. [Means for solving the problem]

[0012] In order to achieve the above object, the first means of the present invention is a tamper-evident box comprising a lid 20 extending from an opening edge 11 of a box 10, and a pair of bent pieces extending from the opening edges 11 on the left and right sides of the lid 20, in which an insertion piece 21 formed by bending the tip of the lid 20 is engaged on both sides with the adjacent bent pieces when the lid is closed, and a removal piece 30 for opening is provided on either or both of the box 10 and the lid 20, A guard piece 41 is bent and formed on the side edge of one of the bent pieces to form a distortion prevention piece 40. When the lid is attached, the other bent piece 50, the distortion prevention piece 40 and the lid body 20 are overlapped, and the guard piece 41 of the distortion prevention piece 40 is overlapped on the back side of the insertion piece 21 of the lid body 20.

[0013] The second means is to form a notched engaging portion 41A at both ends of the guard piece 41 and to form an engaging protrusion 51 on the bending side edge of the other bent piece to form an auxiliary piece 50, and to engage one of the notched engaging portions 41A of the guard piece 41 with the engaging protrusion 51 of the auxiliary piece 50.

[0014] The third means is to form a notch engaging portion 41A at both ends of the guard piece 41 and to form a notch engaging portion 21A at both ends of the insertion piece 21, and to engage each notch engaging portion 21A of the insertion piece 21 with each notch engaging portion 41A of the guard piece 41.

[0015] The fourth means is configured such that the removal piece 30 is formed on the box 10 so as to reach the opening edge 11, and the box 10 is resealed with the lid 20 after being opened.

[0016] The fifth means is configured such that the removal piece 30 is formed on the lid 20 so as to reach the opening edge 11 side, and the box 10 is resealed with the distortion prevention piece 40 after being opened. Effect of the Invention

[0017] According to the present invention, the distortion prevention piece 40 prevents distortion of the opening of the box body 10. In addition, the guard piece 41 of the distortion prevention piece 40 prevents the formation of unauthorized gaps. As a result, unauthorized opening that exploits distortion or gaps in the opening can be prevented. Moreover, the lid can be easily attached with a simple operation.

[0018] Furthermore, the guard piece 41 of the distortion prevention piece 40 also enables the box 10 to be resealed after it has been opened. As a result, after the box 10 has been opened, it can be resealed not only by the lid 20 but also by the distortion prevention piece 40, so that even if the lid 20 is damaged by the removal piece 30, it can be resealed with a good appearance.

[0019] In this way, the present invention has achieved its initial objective of being able to attach the lid with simple operations and to prevent unauthorized removal due to distortion of the opening of the box body. [Brief description of the drawings]

[0020] [Figure 1] FIG. 2 is a development view showing a sheet body of the packaging box of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 4 is a perspective view of a main portion showing an auxiliary piece of the present invention in a closed state. [Figure 4] FIG. 4 is an enlarged perspective view of a main portion showing a locking protrusion of an auxiliary piece of the present invention. [Diagram 5] FIG. 2 is a perspective view of a main part showing a state in which the distortion prevention piece of the present invention is closed. [Figure 6] FIG. 4 is an enlarged perspective view of a main portion showing a cut-out engagement portion of a guard piece according to the present invention. [Figure 7] FIG. 2 is a perspective view of a main part of the packaging box of the present invention with the lid closed. [Figure 8] FIG. 13 is a perspective view of a main part showing a state in which the removal piece of the present invention has been removed from the box body. [Figure 9] FIG. 2 is a perspective view of a main part of the packaging box of the present invention after opening. [Figure 10] FIG. 2 is a perspective view of a main part showing the state in which the packaging box of the present invention has been resealed with a lid. [Figure 11] FIG. 13 is a perspective view of a main portion showing another embodiment of the removal piece of the present invention. [Figure 12] 12 is a perspective view of a main part showing the packaging box shown in FIG. 11 in an opened state. [Figure 13] 12 is a perspective view of a main part showing a process of resealing the packaging box shown in FIG. 11. [Figure 14] 12 is a perspective view of a main part showing a state in which the packaging box shown in FIG. 11 is resealed with a guard piece. [Figure 15] FIG. 13 is a perspective view of a main portion showing another embodiment of the removal piece of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The basic configuration of the present invention comprises a box 10, a lid 20, a removal piece 30, a distortion prevention piece 40, and an auxiliary piece 50 (see FIG. 1). The box 10 is formed by bending a sheet body P, and the lid 20, the distortion prevention piece 40, and the bent pieces constituting the auxiliary piece 50 are provided on the opening edge 11 of the box 10 so as to be able to swing freely.

[0022] In the illustrated example, the box 10 includes a lid 20 extending from the opening edge 11 at the rear, and a pair of bent pieces extending from the opening edges 11 on the left and right sides of the lid 20 (see FIG. 2). One of these bent pieces constitutes a distortion prevention piece 40 equipped with a guard piece 41, and the other constitutes an auxiliary piece 50 having an engaging protrusion 51. The shape of the box 10 is a cube, but the shape of the box 10 can be changed as desired.

[0023] The lid body 20 has an insertion piece 21 bent at the tip, and when the lid is closed, both ends of the insertion piece 21 engage with the adjacent bent pieces so that it is difficult to remove. That is, notch-shaped locking portions 21A are formed at both ends of the insertion piece 21, and these notch locking portions 21A engage with the adjacent bent pieces to make it difficult to remove.

[0024] The notch locking portion 21A formed at both ends of the insertion piece 21 is formed by a linear notch and a hook-shaped notch formed at the end of the notch (see FIG. 1). When the insertion piece 21 is bent, the linear portion of the notch locking portion 21A separates into upper and lower portions, creating a step (see FIG. 7). Therefore, the notch locking portion 41A and the locking protrusion 51 described later are locked between the linear portions of the notch locking portion 21A (see FIG. 2).

[0025] The removal piece 30 is a portion to be removed when opening, and is provided on either or both of the box body 10 and the lid body 20 (see FIG. 1). The illustrated removal piece 30 is formed on the box body 10 and is removed from the opening edge 11 side (see FIG. 8).

[0026] The removal piece 30 can also be formed on the lid body 20 (see Figs. 11 and 15). The removal piece 30 in Fig. 11 is for removing the lid body 20 so as to traverse it. On the other hand, the removal piece 30 in Fig. 15 has a knob 31 at the center of the tip side of the lid body 20, and is for removing from this knob 31 toward the left and right side edges. In this way, the position and shape of the removal piece 30 can be changed as desired, and it may be formed on both the box body 10 and the lid body 20 (not shown).

[0027] The warping prevention piece 40 is formed by forming a guard piece 41 on one of the bent pieces adjacent to the lid body 20 (see FIG. 1). This guard piece 41 overlaps with the back side of the insertion piece 21 of the lid body 20, and the warping prevention piece 40 overlapping with the lid body 20 strengthens the opening of the box body 10 and prevents warping.

[0028] Furthermore, the guard piece 41 overlaps the back side of the insertion piece 21, thereby reinforcing the insertion piece 21 itself and also strengthening the structure on the insertion piece 21 side so that even the slightest gap does not occur on the insertion piece 21 side of the lid body 20.

[0029] The illustrated guard piece 41 has substantially the same shape as the insertion piece 21 of the lid body 20, and has notched locking portions 41A formed at both ends similar to the notched locking portions 21A of the insertion piece 21 described above (see FIG. 3). When the lid is closed, the notched locking portions 41A overlap with and lock onto the notched locking portions 21A of the insertion piece 21 (see FIG. 7).

[0030] The auxiliary piece 50 is formed by the other bent piece adjacent to the cover 20, and has a locking protrusion 51 that locks onto one side of the guard piece 41 (see FIG. 1). This locking protrusion 51 protrudes from the side edge of the auxiliary piece 50 on the bent part side (see FIGS. 3 and 4). When one side of the notched locking portion 41A is locked onto this locking protrusion 51, the position of the guard piece 41 is fixed (see FIG. 5).

[0031] Furthermore, the notched engaging portion 21A of the insertion piece 21 is overlapped and engaged with the notched engaging portion 41A of the fixed guard piece 41 (see FIG. 7). As a result, the distortion prevention piece 40 and the auxiliary piece 50 work together to increase the strength of the lid 20 and prevent distortion of the opening of the box 10.

[0032] In the present invention, when the box 10 is covered, the auxiliary piece 50 (see FIG. 3), the warp prevention piece 40 (see FIG. 5), and the lid 20 are stacked on the opening of the box 10 (see FIG. 7). In the illustrated example, the auxiliary piece 50, the warp prevention piece 40, and the lid 20 are stacked in this order. The procedure for covering is as follows: first, the guard piece 41 of the warp prevention piece 40 is engaged with the engagement protrusion 51 of the auxiliary piece 50 (see FIG. 6). Then, the notch engagement portions 21A at both ends of the insertion piece 21 of the lid 20 are engaged with the notch engagement portions 41A of the guard piece 41 (see FIG. 7). Therefore, even if the box is tamper-proof, the procedure for covering can be easily performed in the same manner as for a normal box.

[0033] In the present invention, the box 10 that has been opened by removing the removal piece 30 can be closed again. For example, if the removal piece 30 is formed on the box 10, the lid 20 is not broken at the removal piece 30 (see FIG. 8). Therefore, the open lid 20 can be used to reseal the box 10 (see FIG. 9 and FIG. 10).

[0034] On the other hand, if the removal piece 30 is formed on the lid body 20 (see FIG. 11), removing the removal piece 30 breaks the lid body 20 (see FIG. 12). In this case, to reseal the box 10 after opening, the warping prevention piece 40 is used instead of the lid body 20 (see FIG. 13 and FIG. 14). At this time, the damaged lid body 20 is placed on the inside of the warping prevention piece 40, so that the damaged lid body 20 does not spoil the aesthetic appearance when resealed (see FIG. 13).

[0035] In this way, even if the lid body 20 is damaged when opened, it can be resealed using the distortion prevention piece 40, so it is possible to reseal the lid body 20 even if the removal piece 30 formed on the lid body 20 has a different shape (see Figure 15).

[0036] The configuration of the present invention is not limited to the illustrated example, and design changes can be freely made within the scope of the present invention without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0037] P sheet body 10 box body 11 Opening edge 20 Lid 21 Insert 21A Notch locking part 30 Removal piece 31 Knob 40 Distortion prevention piece 41 Guard Piece 41A Cut-out locking part 50 Auxiliary piece 51 Locking protrusion

Claims

1. A tamper-proof box is provided with a lid body extending from an opening edge of a box body, and a pair of bent pieces extending from the opening edges on the left and right sides of the lid body, and when the lid is closed, both sides of an insertion piece formed by bending the tip of the lid body are engaged with the adjacent bent pieces, and a removal piece for opening is provided on either or both of the box body and the lid body, A guard piece is bent and formed on a side edge of one of the bent pieces to form a distortion prevention piece; This tamper-evident box is characterized in that, when the lid is attached, the other folding piece, the distortion prevention piece, and the lid body are overlapped, and the guard piece of the distortion prevention piece is superimposed on the back side of the insertion piece of the lid body.

2. A notch is formed at each end of the guard piece, and a protrusion is formed at the bent side edge of the other bent piece to form an auxiliary piece.

2. The tamper-evident box according to claim 1, wherein a notched engaging portion on one side of said guard piece is engaged with a engaging protrusion of said auxiliary piece.

3. 2. A tamper-evident box as described in claim 1, wherein a notch engaging portion is formed at both ends of said guard piece and a notch engaging portion is formed at both ends of said insertion piece, and each notch engaging portion of said guard piece engages each notch engaging portion of said insertion piece.

4. 2. The tamper-evident box according to claim 1, wherein the removal piece is formed on the box body and reaches the edge of the opening, and the box body is resealed with the lid body after opening.

5. 2. The tamper-evident box according to claim 1, wherein the removal piece is formed on the lid body and extends to an edge side of the opening, and the box body is resealed after opening with the distortion prevention piece.

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