JP5306069B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box with a virgin lock function.

  As a packaging box with a virgin lock function, as described in Patent Document 1, a hexahedron having first to fourth side walls, a top wall connected to the upper edge of the first side wall, and a bottom wall that closes the bottom opening. The top wall has a free end edge and a locking piece connected to the free end edge, and the second side wall is formed from a slit formed in the vicinity of the upper end edge, and the slit. And an opening / closing window formed toward the lower side of the container. When the locking piece is inserted into the container through the slit, the leading end of the locking piece is engaged with the inside of the container, and the opening / closing window is connected to the second side wall. When it is swung outwardly, there is one in which an opening is formed which is connected to a slit so that the tip of the locking piece can be pulled out of the container. In this packaging box, when the top opening is opened by rotation of the top wall, the opening / closing window is opened from the second side wall in order to release the engagement (virgin lock) between the locking piece continuous to the top wall and the container. It must be cut off, and it can be seen that the container has been opened when the virgin lock is released and the opening / closing window appears in the appearance of the container.

  However, in the packaging box described in Patent Document 1, the operation of releasing the virgin lock of the container and opening it is a process of separating the opening / closing window from the second side wall and turning it outward, and forming a locking piece on the second side wall. It consists of a plurality of steps of drawing out from the slits that are made, and quickly lacks.

  As another conventional packaging box with a virgin lock function, as shown in FIG. 9, it is a part of the upper edge side of the rear plate 2 and is provided so as to be cut off from the other part of the rear plate 2. It has a stop piece 3 and a slit 5 </ b> A provided in the insertion flap 5 of the lid plate 4 connected to the front plate 1 and extending in the width direction. The insertion flap 5 is connected to the inner surface of the rear plate 2. When the upper end locking portion 3A of the locking piece 3 is inserted into the slit 5A from the outer surface of the insertion flap 5, the upper end locking of the locking piece 3 is inserted. There is one in which the slit 5A is locked to the portion 3A so that the lid plate 4 can be closed.

  In this packaging box, if the locking piece 3 locked with the slit 5A of the insertion flap 5 of the cover plate 4 is cut from the other part of the rear plate 2, the virgin lock of the cover plate 4 is released and the The lid plate 4 can be opened immediately.

JP2003-160127

  However, in the conventional packaging box with a virgin lock function shown in FIG. 9, the gap 5 between the inner surface of the rear plate 2 and the rear edge of the inner flap 6 is inserted into the insertion flap 5 of the lid plate 4 after the lid plate 4 is opened. When the cover plate 4 is resealed by inserting the cover plate 4, the cover plate 4 is likely to be freely opened due to the opening behavior force generated in the bent continuous connection portion of the cover plate 4 with respect to the front plate 1.

  An object of the present invention is to enable free opening of a resealed lid plate in a packaging box with a virgin lock function while allowing the lid plate released from the virgin lock to be opened immediately.

  The invention according to claim 1 is a body comprising a front plate, a rear plate, and left and right side plates, a lid plate connected to the upper edge of the front plate, an insertion flap provided at the tip of the lid plate, An inner flap that is connected to at least one of the upper edges of the side plate, and the inner flap is folded into the opening of the body portion, and the insertion flap of the cover plate that is folded outside the inner flap is placed on the rear plate. A locking piece provided on a part of the upper edge side of the rear plate and capable of being cut off from the other part of the rear plate. And a slit provided in the insertion flap of the cover plate and extending in the width direction thereof, and when the insertion flap is inserted into the gap between the inner surface of the rear plate and the rear edge of the inner flap, the locking piece Is inserted into the slit from the outer surface of the insertion flap, and the slit is locked to the upper end locking portion of the locking piece. A packaging box that allows the lid plate to be closed, cuts off the locking piece that is latched with the slit of the insertion flap of the lid plate from other parts of the rear plate, and allows the lid plate to be opened, After opening the cover plate, when the cover plate is re-sealed by inserting the insertion flap of the cover plate into the gap between the inner surface of the rear plate and the rear edge of the inner flap, it is locked to the slit of the insertion flap. The upper end locking portion of the locking piece inside the insertion flap is brought into contact with the inner side surface of the inner flap so that the free opening of the lid plate can be restrained.

FIG. 1 is a perspective view showing a lid open state before an article is accommodated in a packaging box. FIG. 2 is a perspective view showing a closed state of the packaging box after the article is accommodated. FIG. 3 is a development view of the packaging box. 4A and 4B show the lid open state, where FIG. 4A is a front view, and FIG. 4B is a schematic cross-sectional view taken along line BB in FIG. 5A and 5B show the lid closed state, in which FIG. 5A is a front view and FIG. 5B is a schematic cross-sectional view taken along line BB in FIG. 6A and 6B show a lid opened state, in which FIG. 6A is a front view, and FIG. 6B is a schematic cross-sectional view taken along line BB in FIG. 7A and 7B show a lid resealed state, where FIG. 7A is a front view and FIG. 7B is a schematic cross-sectional view taken along line BB in FIG. 8A and 8B show the inner flaps arranged in the opening of the trunk portion of the packaging box. FIG. 8A is a plan view of an example, and FIG. 8B is a plan view of another example. FIG. 9 shows a conventional packaging box, in which (A) is a perspective view and (B) is a schematic sectional view.

  The packaging box 10 with the virgin lock function shown in FIGS. 1 and 2 accommodates the article in the lid open state shown in FIG. 1, and then virgin locks the lid closed state shown in FIG. Is released so that the lid can be opened.

  The packaging box 10 is manufactured from a developed material as shown in FIG. 3 punched out of a paperboard, a plastic sheet, or a composite sheet of paper and plastic. In the present specification, with the packaging box 10 placed on the horizontal plane, one orthogonal to the horizontal plane is referred to as front and rear, and the other is referred to as the left and right. Is referred to below. The left, right, upper edge, and lower edge of each part in the unfolded state of the material means the left and right, upper edge, and lower edge of each part in the packaging box in which this material is assembled. The upper edge and the lower edge.

  The packaging box 10 has left and right side plates 13 and 14 connected to both left and right sides of the front plate 11 via folds 13A and 14A, and a rear plate 12 connected to the left side plate 13 via folds 12A. The glued pieces 15 are continuously provided on the plate 12 through the folds 15A. Each plate 11, 12, 13, 14 is bent into a prismatic shape, and a glued piece 15 is bonded to the inner side surface of the right side plate 14 to form the body portion 10 </ b> A.

  In the packaging box 10, a lid plate 21 is connected to the upper edge of the front plate 11 via a fold 21 </ b> A, an insertion flap 22 is provided at the tip of the lid plate 21 via a fold 22 </ b> A, and left and right side plates 13. The left and right inner flaps 23 and 24 are connected to the upper edge of the left and right via the folds 23A and 24A.

  The packaging box 10 has a bottom plate 25 connected to the lower edge of the front plate 11 via a fold 25A, and a bottom plate 26 connected to the lower edge of the rear plate 12 via a fold 26A. In the packaging box 10, inner flaps 27 and 28 are connected to lower edges of the left and right side plates 13 and 14 via folds 27 </ b> A and 28 </ b> A.

  When the packaging box 10 is opened at least once with the lid closed state in which the opening 10B of the trunk portion 10A is closed with the lid plate 21 or the like as will be described later, A virgin lock function is provided by the locking piece 30 of (A) and the slit 40 of (B).

  (A) The packaging box 10 has a locking piece 30 that is a part of the center on the upper edge side of the rear plate 12 and that can be cut off from the other portions of the rear plate 12. As shown in FIGS. 4 to 7, the locking piece 30 is connected to the other portion of the rear plate 12 and the cuttable portion 31 that can be cut through the perforation 31 </ b> A and the upper center of the cuttable portion 31. The upper end locking portion 32 is formed. The upper end locking portion 32 includes a connecting portion 32A connected to the center upper portion of the cut-away portion 31, shoulder portions 32B and 32B extending to the left and right sides in the width direction of the connecting portion 32A, and connecting portions of the shoulder portions 32B and 32B on both sides. It forms a tongue-like shape surrounded by a bulging curve 32C that connects the outer ends of 32A. In the present embodiment, the bulging curve 32C of the upper end locking portion 32 forms an outwardly convex arc shape.

  (B) The packaging box 10 has a slit 40 provided at the center of the insertion flap 22 of the lid plate 21 and extending in the width direction (left-right direction). The slit 40 has a central portion in the width direction as a convex slit portion 41 that is convex toward the tip side. When the convex piece portion 42 that is defined along the convex slit portion 41 of the insertion flap 22 and forms a V-shaped outline inserts the upper end locking portion 32 of the locking piece 30 into the slit 40 as will be described later. Become a guide.

  The packaging box 10 is assembled as described below using the above-described materials, and forms a box body in the lid open state shown in FIG.

  (1) Each plate 11, 12, 13, 14 of the material is bent into a prismatic shape, and a glued piece 15 is bonded to the inner side surface of the right side plate 14 to form the body portion 10 </ b> A. An opening 10B is formed at the upper end of the body portion 10A.

  (2) Inner flaps 27 and 28 are folded and arranged in the opening at the lower end of the body portion 10A, and the bottom plates 25 and 26 folded and overlapped outside the inner flaps 27 and 28 are engaged and bonded to each other to form the bottom portion 10C. .

Hereinafter, the usage method of the packaging box 10 is demonstrated.
(1) An article is accommodated in the packaging box 10 in the lid open state shown in FIGS. That is, the lid plate 21 and the inner flaps 23 and 24 of the packaging box 10 are opened outward from the opening 10B, and articles are loaded from the opening 10B.

  (2) The packaging box 10 is placed in a virgin-locked lid closed state as shown in FIGS. That is, the inner flaps 23 and 24 are folded and arranged in the opening 10B of the body portion 10A, and the insertion flap 22 of the cover plate 21 folded and overlapped outside the inner flaps 23 and 24 is connected to the inner surface of the rear plate 12 and the inner flap. 23, 24 is inserted into the gap G (FIG. 8) between the rear edges 23B, 24B.

  In the process of inserting the insertion flap 22 of the cover plate 21 according to (2), the upper end engagement portion 32 of the engagement piece 30 is slit from the outer surface of the insertion flap 22 to the slit of the insertion flap 22 as shown in FIG. 40, and the slit 40 is locked to the upper end locking portion 32 of the locking piece 30 to close the lid plate 21, in other words, virgin lock. When the upper end locking portion 32 of the locking piece 30 is inserted into the slit 40 of the insertion flap 22, the arc top portion of the bulging curve 32 </ b> C of the upper end locking portion 32 corresponds to the above-described convex piece portion 42 of the insertion flap 22. The upper end locking portion 32 is guided into the slit 40 by being guided into the inner surface. At the same time as the insertion of the insertion flap 22 of the cover plate 21 is completed, the upper end locking portion 32 of the locking piece 30 is inserted into the slit 40 of the insertion flap 22 up to the shoulder portion 32B, and the edge of the slit 40 is locked to the upper end. The above-described virgin lock is formed by being engaged with the shoulder portion 32B of the portion 32.

  (3) When taking out the article loaded in the above (1), as shown in FIG. 6, the locking piece 30 locked with the slit 40 of the insertion flap 22 of the lid plate 21 is attached to the rear plate 12. The virgin lock is released by cutting away from other parts and the lid plate 21 can be opened. It can be seen that the traces of the locking pieces 30 separated to release the virgin lock appear on the outer appearance of the packaging box 10 and the packaging box 10 has been opened. The locking piece 30 is cut off from other portions of the rear plate 12 at the perforation 31A of the cut-away portion 31.

  (4) After the opening of the lid plate 21 (3), as shown in FIG. 7, the insertion flap 22 of the lid plate 21 is placed between the inner surface of the rear plate 12 and the rear edges 23B, 24B of the inner flaps 23, 24. The cover plate 21 is resealed by being inserted into the gap G. At this time, in the locking piece 30 of the above-described (3) locked in the slit 40 of the insertion flap 22, the upper end locking portion 32 entering from the slit 40 of the insertion flap 22 is connected to the inner flap 23. , 24 abutting against the inner surface, the free opening of the lid plate 21 is prevented.

  In the packaging box 10, a locking piece for locking the gap G between the rear edges 23 </ b> B and 24 </ b> B of the inner flaps 23 and 24 and the inner surface of the rear plate 12 to the slit 40 of the insertion flap 22. The upper end locking portion 32 of the 30 is set to a small gap sufficient to abut the inner side surface of the inner flaps 23, 24 near the rear edges 23B, 24B. 8A, the rear edges 23B and 24B of the front end side of the inner flaps 23 and 24 are sufficiently extended to the side close to the inner surface of the rear plate 12, and the upper end locking portion 32 of the locking piece 30 is the inner flap 23. , 24 is an example in which the inner side surface on the tip side is surely abutted. FIG. 8B shows that the rear edges 23B, 24B of the inner flaps 23, 24 near the base end side are sufficiently extended to the side close to the inner surface of the rear plate 12, and the upper end locking portion 32 of the locking piece 30 is The inner side surface of the flaps 23 and 24 close to the base end side is abutted, and the insertion flap 22 is connected to the inner side surface in the center in the width direction of the rear plate 12 and the rear edges 23B and 24B on the front end side of the inner flaps 23 and 24 This is an example of facilitating insertion into the gap G between the two.

According to the present embodiment, the following operational effects can be obtained.
(Claim 1)
(a) If the latching piece 30 latched with the slit 40 of the insertion flap 22 of the lid plate 21 is cut from the other part of the rear plate 12, the virgin lock of the lid plate 21 is released and the lid plate 21 can be opened immediately.

  (b) After opening the lid plate 21, the insertion flap 22 of the lid plate 21 is inserted into the gap G between the inner surface of the rear plate 12 and the rear edges 23B, 24B of the inner flaps 23, 24, and the lid plate 21 is re-inserted. Even when the opening behavior force generated in the bent continuous connection portion of the lid plate 21 with respect to the front plate 11 attempts to open the lid plate 21 when sealed, it is related to the slit 40 provided in the insertion flap 22 of the lid plate 21. The upper end locking portion 32 inside the insertion flap 22 of the locking piece 30 that stops is abutted so as to be hooked on the inner surface of the inner flaps 23 and 24, and the cover plate 21 is freely opened. Is stopped.

(Claim 2)
(c) The slit 40 provided in the insertion flap 22 of the cover plate 21 is formed with a convex slit portion 41 having a convex shape toward the tip side at the center in the width direction thereof. The convex piece portion 42 defined along the convex slit portion 41 serves as a guide when the upper end locking portion 32 of the locking piece 30 is inserted into the slit 40. Therefore, when the lid plate 21 is first closed, the upper end locking portion 32 of the locking piece 30 provided on the rear plate 12 can be easily inserted into the slit 40 of the insertion flap 22.

(Claim 3)
(d) The upper end locking portion 32 of the locking piece 30 provided on the rear plate 12 has a connecting portion 32A connected to the center upper portion of the cuttable portion 31, and a shoulder portion extending on both sides in the width direction of the connecting portion 32A. It forms a tongue-like shape surrounded by 32B, 32B and a bulging curve 32C that connects the outer ends of the shoulder portions 32B, 32B on both sides to the connecting portion 32A. Therefore, when the lid plate 21 is initially closed, the tongue-like upper end locking portion 32 of the locking piece 30 provided on the rear plate 12 can be easily inserted into the slit 40 of the insertion flap 22.

  In the packaging box, when the lid is re-sealed by inserting the insertion flap of the lid into the gap between the inner surface of the rear plate and the rear edge of the inner flap after the lid is opened. The upper end locking portion of the locking piece locked in the slit of the insertion flap is brought into contact with the inner side surface of the inner flap, so that the free opening of the cover plate can be prevented.

DESCRIPTION OF SYMBOLS 10 Packaging box 10A Body part 10B Opening 11 Front plate 12 Rear plate 13, 14 Side plate 21 Cover plate 22 Insertion flap 23, 24 Inner flap 30 Locking piece 31 Cut-off possible part 31A Perforation 32 Upper end locking part 32A Connection part 32B Shoulder portion 32C bulging curve 40 slit 41 convex slit portion 42 convex piece portion

Claims (3)

A body composed of a front plate, a rear plate, and left and right side plates; a lid plate connected to the upper edge of the front plate; an insertion flap provided at the tip of the lid plate; and at least the upper edges of the left and right side plates The inner flap is connected to one side, the inner flap is folded and arranged in the opening of the trunk, and the insertion flap of the cover plate folded and overlapped outside the inner flap is connected to the inner surface of the rear plate and the inner flap. Allows insertion into the gap between the trailing edges,
A part on the upper edge side of the rear plate, which is provided so as to be cut off from the other part of the rear plate, and a slit provided in the insertion flap of the lid plate and extending in the width direction thereof. When the insertion flap is inserted into the gap between the inner surface of the rear plate and the rear edge of the inner flap, the upper end locking portion of the locking piece is inserted into the slit from the outer surface of the insertion flap. , The slit can be locked to the upper end locking portion of the locking piece and the lid plate can be closed,
It is a packaging box that cuts off the locking piece locked with the slit of the insertion flap of the cover plate from the other part of the rear plate, and allows the cover plate to be opened,
After opening the cover plate, when the cover plate is re-sealed by inserting the insertion flap of the cover plate into the gap between the inner surface of the rear plate and the rear edge of the inner flap, it is locked to the slit of the insertion flap. A packaging box capable of restraining free opening of the cover plate by abutting an upper end engaging portion of the engaging piece inside the insertion flap with an inner surface of the inner flap. The slit provided in the insertion flap of the lid plate is a convex slit portion that forms a convex shape toward the front end side in the center in the width direction,
The packaging box according to claim 1, wherein the convex piece portion defined along the convex slit portion of the insertion flap serves as a guide when the upper end locking portion of the locking piece is inserted into the slit. A locking piece provided on the rear plate includes a cutable portion joined to other portions of the rear plate so as to be cut through a perforation, and an upper end locking portion connected to a central upper portion of the cuttable portion. Become
The upper end locking portion has a connecting portion with the central upper portion of the cuttable portion, a shoulder portion extending on both sides in the width direction of the connecting portion, and a bulging curve connecting outer ends of the connecting portions of the shoulder portions on both sides. The packaging box of Claim 1 or 2 which makes the shape of a tongue piece enclosed by.

Images