JP5235732B2 - paper box - Google Patents

Description

  The present invention relates to a paper box.

  There is a thing of patent document 1 as a hanging type packaging box which cannot be easily removed by vibrations or the like because the lid is not easily opened. The box described in Patent Document 1 includes a box-forming piece integrally punched from one blank sheet such as cardboard, and the box-forming piece includes a plurality of side surfaces connected in parallel to each other, A lid piece formed at the end of the side surface, and a hanging piece formed by extending from the other side surface of the side surface facing the side surface on which the lid piece is formed. A locking piece is formed at the center upper portion of the side surface, and the insertion piece formed to be connected to the end of the lid piece has a locking hole into which the locking piece is inserted, and the locking piece is Some are inserted into the locking holes and locked.

  Moreover, there exists a thing of the patent document 2 as a packaging box which makes it impossible to take out the content unless the packaging box is cut open by locking a flap. In the box described in Patent Document 2, an inner flap is extended to the upper end on the front side of the box, a hanging piece is extended to the upper end on the back side of the box, and an outer flap is further extended to the hanging piece. The insertion piece is extended at the end of the outer flap, the insertion port of the insertion piece is provided at the base of the inner flap, and the insertion piece is pulled out when the insertion piece is inserted into the insertion port from the outside. It is made to have the lock structure which prevents.

JP2001-130545 JP2007-168877

  In the box described in Patent Document 1, when the box is assembled and the suspension piece can be suspended, the engagement piece formed on the suspension piece is inserted into the engagement hole of the insertion piece provided on the lid piece. The lid piece is locked so as not to open due to the vibration of the box or its own weight. That is, the lid piece is always locked at the time of assembling the box, and it is necessary to make the lock strong when the box is heavy. On the contrary, a large force is required to release the lock when opening the lid piece.

  In the box described in Patent Document 2, when the box is assembled and the hanging piece can be hung, the insertion piece of the outer flap extended to the hanging piece is inserted into the insertion port of the base portion of the inner flap. The outer flap and the inner flap are locked so as not to open due to the vibration or dead weight of the box. In other words, the outer and inner flaps are always locked when the box is assembled, and it is necessary to make the locks strong in a heavy box. Conversely, a large force is required to release the lock when opening the outer and inner flaps. Is required.

  SUMMARY OF THE INVENTION An object of the present invention is to make it possible to easily lock and unlock the lid flap when it is necessary to lock the lid flap in a paper box that can be suspended when the suspension is necessary.

  According to the first aspect of the present invention, a box body portion is constituted by the first and second side plates facing each other and the first and second end plates facing each other across the side plates. First and second end flaps connected to each upper side of the end plate are foldable on the opening side of the box body, and a lid flap connected to the upper side of the first side plate is opened to the box side. Folded to the upper side of the first and second end flaps that have been folded to the side, the insertion piece at the tip of the lid flap can be inserted into the back side of the second side plate, and a hanging piece is attached to the lid flap. It is a paper box formed continuously, and a notch window is provided in the lid flap, and a pressing tongue piece is formed in a part along the notch window so as to face the notch window of the lid flap in the first end flap. An engagement part is provided that extends from the part to a position that overlaps the tip of the pushing tongue of the lid flap. When the pushing tongue piece is pushed in, the lid flap can be locked by engaging with the back side of the engaging portion of the first end flap, and the portion of the first end flap facing the notch window of the lid flap is pushed in. Accordingly, the engagement of the pushing tongue piece is released so that the lid flap can be unlocked.

  (a) The lid flap is locked by engaging the pushing tongue piece of the lid flap with the back side of the engaging portion of the first end flap, and whether or not the suspension piece can be suspended. It is made regardless of whether or not. Therefore, when not hanging, such as displaying a plurality of paper boxes in a stacked state, it is not always necessary to lock the lid flap. Even if the paper box is suspended, it is not always necessary to lock the lid flap when the weight of the box is light. In such a case, the lid flap is not locked more than necessary, and the usability of the paper box is simplified.

  (b) When the lid flap needs to be locked, the lid flap can be easily locked simply by pushing it in. On the contrary, when opening the lid flap, the above-mentioned lid flap can be easily unlocked simply by pushing the portion of the first end flap facing the notch window of the lid flap.

FIG. 1 is a perspective view showing an unsealed state of the paper box. FIG. 2 is a perspective view showing a state in which the lid flap of the paper box is closed and the hanging piece of the lid flap is not raised. FIG. 3 is a perspective view showing a state in which the lid flap of the paper box is closed, and a state in which the hanging piece of the lid flap is raised. FIG. 4 is a perspective view showing a locked state in which the lid flap of the paper box is in a closed state and a pushing tongue piece of the lid flap is pushed in. FIG. 5 is a plan view showing a developed state of the paper box.

  The paper box 1 shown in FIGS. 1 to 4 has a box body 10 and a bottom 20 (not shown) that closes the bottom surface of the box body 10, and a storage space formed by the box body 10 and the bottom 20. A lid 30 is provided for accommodating the contents and opening and closing the opening of the box body 10. The paper box 1 can be hung and provided for display, or stacked and provided for display.

  The paper box 1 is assembled by folding a developed material as shown in FIG. 5 in which cardboard or other thick paper is punched. The upper side and the lower side of each part in the unfolded state of the cardboard are referred to as the upper side and the lower side, respectively, which constitute the upper side and the lower side of each part in the assembled state of the paper box 1 in which the cardboard is assembled.

  In the assembled state, the paper box 1 is a box body portion that includes first and second side plates 11 and 12 that face each other, and first and second end plates 13 and 14 that face each other across the side plates 11 and 12. 10 is configured. In the unfolding material of the paper box 1, a glued flap 15 is provided at one end of the second side plate 12 via a fold a, and the second end plate 14 is provided at the other end of the second side plate 12 via a fold b. To be installed. That is, when viewed from the first side plate 11 facing the second side plate 12, the end plate 14 is connected to the second end plate 14 through the fold c at one end. The other end of the first side plate 11 is connected to the first end plate 13 through a fold d. In the assembled state of the paper box 1, the side plates 11 and 12 and the end plates 13 and 14 are bent at the folds a, b, c, and d to form a square tube, and the inner surface of the first end plate 13 is glued. The box body 10 is formed by attaching the flap 15.

  The paper box 1 includes a first bottom plate 21 connected to the lower side of the first side plate 11 via a fold e, and a second bottom plate connected to the lower side of the second side plate 12 via a fold f. The bottom plate 22, the first bottom flap 23 connected to the lower side of the first end plate 13 via the fold g, and the lower side of the second end plate 14 connected to the lower side via the fold h. It has a second bottom flap 24. In the assembled state of the paper box 1, the first bottom flap 23 and the second bottom flap 24 are folded at the folds g and h and folded into the bottom surface side of the box body portion 10, and then the first bottom plate 21 and the first bottom flap 21. The second bottom plate 22 is bent at the folds e and f. The glued portion 22B of the second bottom plate 22 is inserted into the back side of the protruding portion 21A of the first bottom plate 21, and the glued portion 21B of the first bottom plate 21 is inserted into the back side of the projected portion 22A of the second bottom plate 22. In this state, the protrusion 22A of the bottom plate 22 is adhered to the surface of the glued portion 21B of the bottom plate 21, and the protrusion 21A of the bottom plate 21 is adhered to the surface of the glued portion 22B of the bottom plate 22 to form the bottom portion 20. To do.

  The paper box 1 has a lid flap 31 that is connected to the upper side of the first side plate 11 via a fold i, and an insertion piece 32 that is connected to the tip of the lid flap 31 via a fold j. A first end flap 33 connected to the upper side of the first end plate 13 via a fold k, and a second end connected to the upper side of the second end plate 14 via a fold l. It has a flap 34. In the assembled state of the paper box 1, the first end flap 33 and the second end flap 34 are folded at the folds k and l and folded into the opening side of the box body 10, and then the lid flap 31 is folded at the fold i. Is folded at the upper side of the above-mentioned folded first and second end flaps 33, 34, and the insertion piece 32 at the tip of the lid flap 31 is inserted into the back side of the second side plate 12, The lid portion 31 is formed with the lid flap 31 closed. The lid flap 31 and the end flaps 33, 34 are folded in the order of the short second end flap 34, the long first end flap 33, and finally the lid flap 31.

  In the paper box 1, the length L1 (FIG. 1) of the first lid flap 33 from the upper side (fold k) of the first end plate 13 is the lid flap along the upper side of the first side plate 11. It is set longer than half of the length L3 (FIG. 1) of 31. The length L2 (FIG. 1) of the second end flap 34 is shorter than half the length L3 of the lid flap 31, and is shorter than the engaging portion 53 of the first end flap 33 described later, that is, the end flap 34. It is set so that the front end portion does not reach the engaging portion 53. Furthermore, the tip of the first end flap 33 is set to overlap the second end flap 34.

  The paper box 1 is close to the upper side of the first end plate 13 of the first end flap 33, and is provided with a convex first locking portion 33A on the side adjacent to the second side plate 12, A convex second locking portion 34 </ b> A is provided on the side adjacent to the second side plate 12 and adjacent to the upper side of the second end plate 14 of the end flap 34. The paper box 1 has a first engagement of the first end flap 33 with the lid 30 closed at the both ends of the side where the insertion piece 32 of the lid flap 31 is provided, as described above. Locking cutout portions 31A and 31A that can be locked by the stop portion 33A and the second locking portion 34A of the second end flap 34 are provided. In the closed state of the lid flap 31, the lid flap 31 is locked by the locking portions 33A and 34A and the locking cut portions 31A and 31A.

  However, the paper box 1 is provided with a hanging piece 40 connected to the central portion of the lid flap 31 and can be hung using the hanging piece 40 when it is required to be hung, and when the lid flap 31 is required to be locked. The lid flap 31 can be easily locked and unlocked easily by the lock portion 50 different from the normal locking means comprising the locking portions 33A and 34A and the locking cut portions 31A and 31A. The following configuration is provided.

  The hanging piece 40 is connected to the central portion of the lid flap 31 through a fold m that is parallel to the upper side of the first side plate 11. The hanging piece 40 is bent from the lid flap 31 at a crease m and is erected, and is used for hanging. The suspension piece 40 includes a suspension hole 41.

  The lock portion 50 is provided with a notch window 51 in the lid flap 31, and a pressing tongue piece 52 is formed by cutting a part of the center of the window side along the window side of the notch window 51. The pushing tongue piece 52 is sandwiched between two cuts 52A and 52A intersecting the window side of the cutout window 51, and both cuts 52A are connected via a connecting portion 52B that connects the ends of the cuts 52A started to be cut from the window side. Thus, the first end flap 33 can be elastically flexibly deformed so as to press down an engaging portion 53 described later.

  The lock portion 50 has a front end portion of the pushing tongue piece 52 of the lid flap 31 (the pushing tongue piece 52 extends along the window side of the notch window 51 from the portion facing the cutout window 51 of the lid flap 31 in the first end flap 33. The engaging portion 53 is provided so as to extend to a position overlapping only with the portion. The first end flap 33 has a notch portion 54 that defines a front edge portion of the engaging portion 53 so that the engaging portion 53 overlaps only with the distal end portion of the pushing tongue piece 52. Provided so that the front edge portion of the engaging portion 53 overlaps the tip portion of the pushing tongue piece 52. The engaging portion 53 can be formed in a tongue-like shape sandwiched between two notches 53A and 53A intersecting the front edge portion along the notch portion 54, particularly when the paper box 1 is thick. When pressed by the pressing tongue piece 52, it can be flexibly deformed elastically and flexibly.

  As described above, in the lock portion 50 of the paper box 1, the pushing tongue piece 52 of the lid flap 31 is against the engaging portion 53 of the first end plate 33 in the closed state of the lid flap 31 shown in FIG. 3. When the finger is pushed in with a finger, the distal end of the pushing tongue piece 52 of the lid flap 31 is engaged with the first end flap 33 as shown in FIG. It engages with the back side of the front edge of the joint portion 53 so that the closed state of the lid flap 31 can be locked.

  On the other hand, when the closed state of the lid flap 31 is locked as shown in FIG. 4, the portion facing the cutout window 51 of the lid flap 31 in the first end flap 33 (the engaging portion 53 itself or the engaging portion 53. 3), the leading edge portion of the engaging portion 53 of the first end flap 33 is shown in FIG. 3 through the flexible bending deformation of the pressing tongue piece 52 and the engaging portion 53. As shown, the back of the front end portion of the pushing tongue piece 52 of the lid flap 31 is restored, the engagement by the pushing tongue piece 52 is released, and the lock of the lid flap 31 in the closed state is released.

  In the paper box 1, the hanging piece 40 connected to the lid flap 31 is assumed to be cut and raised from the cutout window 51 of the lid flap 31.

According to the paper box 1, the following effects are obtained.
(a) The lid flap 31 is locked by engaging the pushing tongue piece 52 of the lid flap 31 with the back side of the engaging portion 53 of the first end flap 33, and the hanging piece 40 is suspended. Regardless of whether or not it can be lowered. Accordingly, the lid flap 31 does not necessarily need to be locked when the paper boxes 1 are not suspended, for example, in a stacked state. Even if the paper box 1 is suspended, it is not always necessary to lock the lid flap 31 when the weight of the box is light. In such a case, the lid flap 31 is not locked more than necessary, and the usability of the paper box 1 is simplified.

  (b) When the lid flap 31 needs to be locked, the lid flap 31 can be easily locked only by pushing in the pushing tongue piece 52. Conversely, when the lid flap 31 is opened, the above-described lock of the lid flap 31 can be easily released simply by pressing the portion of the first end flap 33 that faces the cutout window 51 of the lid flap 31.

  (c) The length L1 of the first end flap 33 from the upper side of the first end plate 13 is longer than half of the length L2 of the lid flap 31 along the upper side of the first side plate 11, and The front end of the flap 33 overlaps the second end flap 34. When the lid flap 31 needs to be locked, the tip of the pushing tongue piece 52 of the lid flap 31 is pushed on the upper surface of the engaging portion 53 of the first end flap 33. As a result of the tip being overlapped and supported on the second end flap 34, the first end flap 33 does not escape downward due to the pushing force from the lid flap 31. The pushing tongue piece 52 of the lid flap 31 to be pushed is surely engaged with the back side of the engaging portion 53 of the first end flap 33.

  (d) The hanging piece 40 connected to the lid flap 31 is cut and raised from the cutout window 51 of the lid flap 31. The notch window 51 of the lid flap 31 can be immediately formed by cutting and raising the hanging piece 40, and the pressing tongue piece 52 can be immediately cut and formed in a part along the notch window 51. In addition, when the lid flap 31 is required to be locked, when the pushing tongue piece 52 of the lid flap 31 is engaged with the back side of the engaging portion 53 of the first end flap 33, the pushing tongue piece 52 is lifted from the back side. The engaging portion 53 of the end flap 33 makes it easy to raise the hanging piece 40 from the cutout window 51.

  (e) When the engaging portion 53 of the first end flap 33 has a tongue-like shape, even if the paper box 1 is hard, the engaging portion is pushed by the pushing tongue 52 of the lid flap 31 when the lid flap 31 needs to be locked. 53 is easily pushed in, and the lid flap 31 is easily locked.

  (f) The locking notches 31A and 31A that can be locked by the first locking portion 33A of the first end flap 33 and the second locking portion 34A of the second end flap 34, It is provided at both ends of the side where the insertion piece 32 of the lid flap 31 is provided. Regardless of whether or not the lid flap 31 is locked by the application of the locking portion 50 of the present invention that engages the pressing tongue piece 52 of the lid flap 31 and the engaging portion 53 of the first end flap 33 when the lid flap 31 is closed. The lid flap 31 can always be locked by the normal locking means for locking the first and second locking portions 33A, 34A and the locking cut portions 31A, 31A. When the weight of the box is heavy, the lid flap 31 can be locked firmly by applying the lock portion 50 of the present invention. Therefore, it is not necessary to lock the lid flap 31 by a normal locking means, and the lid flap 31 is opened. Sometimes this can be easily released, and the lid flap 31 can always be locked when the lid flap 31 is closed while making the paper box 1 easy to use.

  According to the present invention, in a paper box that can be suspended when it is necessary to hang, the lid flap can be easily locked and unlocked easily when the lid flap needs to be locked.

DESCRIPTION OF SYMBOLS 1 Paper box 10 Box trunk | drum 11 1st side plate 12 2nd side plate 13 1st end plate 14 2nd end plate 30 Cover part 31 Cover flap 31A Locking notch part 32 Insertion piece 33 1st end Flap 33A First locking portion 34 Second end flap 34A Second locking portion 40 Hanging piece 50 Locking portion 51 Notch window 52 Pushing tongue piece 52A Cutting 53 Engaging portion 53A Cutting

Claims (5)

A box body is constituted by the first and second side plates facing each other, and the first and second end plates facing and intersecting the side plates,
The first and second end flaps connected to the upper sides of the first and second end plates can be folded into the opening side of the box body,
A lid flap connected to the upper side of the first side plate is foldable to the upper side of the first and second end flaps that have been folded into the opening side of the box body, and the insertion piece at the tip of the lid flap is Can be inserted into the back side of the second side plate,
A paper box in which hanging pieces are connected to the lid flap,
A notch window is provided in the lid flap, and a pressing tongue piece is cut and formed in a part along the notch window,
An engaging portion is provided that extends from a portion facing the cutout window of the lid flap in the first end flap to a position overlapping the tip of the pushing tongue of the lid flap;
When the pushing tongue of the lid flap is pushed in, the lid flap can be locked by engaging with the back side of the engaging portion of the first end flap, and the portion facing the notch window of the lid flap in the first end flap is A paper box capable of releasing the lock of the lid flap by releasing the engagement of the pressing tongue piece by being pressed.   The length of the first end flap from the upper side of the first end plate is longer than half the length of the lid flap along the upper side of the first side plate, and the tip of the first end flap is the second end flap. The paper box according to claim 1, which overlaps with the top.   The paper box according to claim 1 or 2, wherein the hanging piece provided continuously to the lid flap is cut and raised from a notch window of the lid flap.   The paper box according to any one of claims 1 to 3, wherein the engaging portion of the first end flap has a tongue shape. A first locking portion is provided on a side adjacent to the second side plate adjacent to the upper side of the first end plate of the first end flap, and on the upper side of the second end plate of the second end flap. Proximate and provided with a second locking portion on the side adjacent to the second side plate,
For locking that the first locking portion of the first end flap and the second locking portion of the second end flap can be locked to both ends of the side where the insertion piece of the lid flap is provided The paper box in any one of Claims 1-4 by which a notch part is provided.

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