Article storage container

Abstract

To provide an article storage container with an anti-tampering function which can reliably leave traces (evidence) even if the container has been opened illegally and which is difficult to return to a state that appears unopened.SOLUTION: When a lid panel 15 and an insertion flap 20 are pivoted downward in a vertical direction and the insertion flap is inserted into a first insertion slit 39 and first and second engagement openings 40, 41 of an article storage container 10A, an engagement protrusion 42 of a fold-in flap 19 engages into a third engagement opening 61 of the insertion flap, a first engagement portion 62 of the insertion flap engages into the first engagement opening of the fold-in flap and a second engagement portion 63 of the insertion flap engages into the second engagement opening of the fold-in flap, so that the lid panel blocks a top opening 17, and when the lid panel, in the state of blocking the top opening, is pivoted upward in the vertical direction to open the top opening, the first and second engagement portions are separated from the insertion flap at first and second perforation lines 78, 79, and the lid panel and the insertion flap are separated.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an article storage container with a tamper-proof function for storing predetermined articles in an article storage space. [Background technology]

[0002] Various types of tamper-proof item storage containers are in use that have a hexahedral item storage container having front and back panels of a specified area spaced apart in the front-to-back direction, first and second side panels of a specified area spaced apart in the horizontal direction, a lid panel that covers the top opening, and a bottom flap that covers the bottom opening, spaced apart in the vertical direction, and that are designed to prevent tampering by leaving traces of opening if the container is tamper-proofed.

[0003] As an example of a container designed to prevent tampering, an item storage container with anti-tampering function is disclosed in which a lid member is extended from one end of a cylindrical body formed by multiple side panels, an opening portion surrounded by an opening break line is provided at the end of the cylindrical body on the same side as the lid member, one end of the cylindrical body is closed with the lid member continuous with the opening portion or a specific portion of the lid member fixed to the opening portion, the opening break line has a first break portion in which multiple slits are arranged side by side at a predetermined pitch, the first break portion and the second break portion in which a slit is formed at an angle that follows the contour of the opening portion, and the first break portion and the second break portion are arranged alternately to surround the opening portion (see Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2020-164217 A Summary of the Invention [Problem to be solved by the invention]

[0005] An article storage container with a tamper-proof function needs to be able to visually confirm that it has been tampered with, but after being tampered with, it may be cleverly returned to its original state so that it appears unopened. In recent years, for reasons of product management, quality control, and the like, there has been a demand for an article storage container that allows reliable visual confirmation of its opening.

[0006] To provide an article storage container having a tamper-proof function that can reliably leave traces (evidence) even if the container is illegally opened and makes it difficult to return the container to a state that appears unopened. [Means for solving the problem]

[0007] The premise of the present invention to solve the above-mentioned problems is a hexahedral item storage container having front and back panels of a specified area that are spaced apart in the front-to-back direction, first and second side panels of a specified area that are spaced apart in the horizontal direction, and a lid panel that covers the top opening and a bottom panel that covers the bottom opening that are spaced apart in the vertical direction.

[0008] A first feature of the present invention based on the above premise is that the container includes a fold-in flap connected to the upper edge of either the front panel or the rear panel and capable of vertically pivoting about the lower edge, and an insert flap connected to the upper edge of the lid panel and capable of vertically pivoting about the lower edge, and the fold-in flap has a first insertion slit formed in the center of its lower edge, extending laterally, into which the insert flap can be inserted, and a first insertion slit between one edge of the first insertion slit and one edge of the fold-in flap. a first insertion opening formed between the other end edge of the first insertion slit and the other side edge of the fold-in flap; a second insertion opening formed between the other end edge of the first insertion slit and the other side edge of the fold-in flap; and an engagement protrusion surrounded by the first insertion slit and the inner edges of the first and second insertion openings and protruding forward in the front-rear direction when the fold-in flap is turned downward in the up-down direction; and the insertion flap has a third insertion opening formed in the center of its lower end edge and a third insertion opening extending laterally from the other end edge of the third insertion opening toward the other side edge of the insertion flap. The container has a first engagement portion detachably connected to an upper edge of the lid panel via a first perforation line extending toward the upper edge of the third engagement opening, and a second engagement portion detachably connected to an upper edge of the lid panel via a second perforation line extending laterally from one edge of the third engagement opening toward one side edge of the insertion flap, and the article storage container is configured such that, when the lid panel and the insertion flap are rotated downward in the vertical direction to insert the insertion flap into the first insertion slit and the first and second engagement openings, the engagement protrusion of the folding flap is inserted into the insertion flap. The first engagement portion of the insertion flap engages into the third engagement opening of the insertion flap, the first engagement portion of the insertion flap engages into the first engagement opening of the fold-in flap and the second engagement portion of the insertion flap engages into the second engagement opening of the fold-in flap so that the lid panel blocks the top opening, and when the lid panel is rotated upward in the vertical direction from the state in which the lid panel blocks the top opening to open the top opening, the first and second engagement portions are separated from the insertion flap at the first and second perforations, and the lid panel and the insertion flap are separated.

[0009] As an example of the present invention having the first characteristic, the first insertion opening of the folding flap is formed of a first semicircular opening that opens in a semicircular shape from one end edge of the first insertion slit toward the upper part of the folding flap, and a first band-shaped opening that opens in a band-like shape in the horizontal direction from one opening end of the first semicircular opening toward one side edge of the folding flap, and the second insertion opening of the folding flap is formed of a semicircular opening that opens in a semicircular shape from the other end edge of the first insertion slit toward the upper part of the folding flap. The third engagement opening of the insertion flap is formed of a second semicircular opening that opens toward the insertion flap, and a second band-shaped opening that opens in a band-like manner from the other opening end of the second semicircular opening toward the other side edge of the insertion flap in a horizontal direction, and a third engagement opening of the insertion flap is formed of a third semicircular opening that opens in a semicircular manner toward the upper side of the insertion flap at a center thereof, a third band-shaped opening that opens in a band-like manner from the other opening end of the third semicircular opening toward the other side edge of the insertion flap, and a third engagement opening of the third semicircular opening that opens in a band-like manner from one opening end of the third semicircular opening toward the insertion flap. and a fourth band-shaped opening that opens in a band shape toward one side edge of the insertion flap. When the lid panel and the insertion flap are rotated downward in the up-down direction to insert the insertion flap into the first insertion slit and the first and second engagement openings, one lateral corner of the engagement protrusion of the fold-in flap is engaged with the third band-shaped opening of the insertion flap in a manner that makes it difficult to release, and the other lateral corner of the engagement protrusion of the fold-in flap is engaged with the fourth band-shaped opening of the insertion flap in a manner that makes it difficult to release. When the top opening is opened to release the engagement of the engagement protrusion with respect to the third engagement opening from a state in which the cover panel covers the top opening, one horizontal corner portion of the engagement protrusion of the fold-in flap catches on the opening edge of the third band-shaped opening of the insertion flap, and the other horizontal corner portion of the engagement protrusion of the fold-in flap catches on the opening edge of the fourth band-shaped opening of the insertion flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

[0010] As another example of the present invention having the first characteristic, an insertion flap has a first notched opening cut laterally inward from its other side edge toward the first engagement portion, and a second notched opening cut laterally inward from its one side edge toward the second engagement portion, and when the top opening of the item storage container is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, the opening edge of the first notched opening of the insertion flap hooks onto the opening edge of the first strip-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap hooks onto the opening edge of the second strip-shaped opening of the fold-in flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

[0011] As another example of the present invention having the first characteristic, the folding flap has a second insertion slit extending laterally from one opening end of the first strip-shaped opening toward one side edge of the folding flap, and a third insertion slit extending laterally from the other opening end of the second strip-shaped opening toward the other side edge of the folding flap, and when the top opening of the item storage container is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion into the third engagement opening, the opening edge of the first notched opening of the insertion flap catches on the slit edge of the second insertion slit of the folding flap, and the opening edge of the second notched opening of the insertion flap catches on the slit edge of the third insertion slit of the folding flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

[0012] A second feature of the present invention based on the above premise is that the article storage container includes a fold-in flap connected to an upper edge of either the front panel or the rear panel and capable of vertically pivoting about the lower edge, and an insertion flap connected to an upper edge of the lid panel and capable of vertically pivoting about the lower edge, and the fold-in flap has a first insertion slit formed in the center of its lower edge, extending laterally, into which the insertion flap can be inserted, a first engagement opening formed between one edge of the first insertion slit and one side edge of the fold-in flap, and a second edge of the first insertion slit and a second edge of the fold-in flap. The insertion flap has a second engagement opening formed between the other side edge of the fold-in flap, and an engagement protrusion that is surrounded by the first insertion slit and the inner edges of the first and second engagement openings and that protrudes forward in the front-rear direction when the fold-in flap is turned downward in the up-down direction, and the insertion flap has a third engagement opening formed in the center of its lower end edge and extending laterally into which the engagement protrusion of the fold-in flap engages when the insertion flap is turned downward in the up-down direction, and a first continuous engagement opening that is located between the other end edge of the third engagement opening and the other side edge of the insertion flap, extends laterally, and engages with the first engagement opening. and a second connecting portion located between one edge of the third insertion opening and one side edge of the insertion flap and extending laterally to be inserted into the second insertion opening. The lid panel has a perforation line that connects the other edge of the first connecting portion and one edge of the second connecting portion and that protrudes downward in the vertical direction from the upper edge of the lid panel, a separation area that is surrounded by the perforation line and can be separated from the lid panel at the perforation line, and a finger insertion opening that opens downward in the vertical direction from the perforation line of the separation area. The article storage container is composed of the lid panel and the insertion flap. When the insertion flap is pivoted downward in the vertical direction to insert it into the first insertion slit and the first and second engagement openings, the engagement protrusion engages into the first engagement opening so that the cover panel blocks the top opening, and when a finger is inserted into the finger insertion opening from the state in which the cover panel blocks the top opening and the tear-off area is pivoted upward in the vertical direction, the tear-off area is separated from the cover panel along the perforation line and the insertion flap is separated from the cover panel, and the remaining area of ​​the cover panel excluding the tear-off area is pivoted upward in the vertical direction to open the top opening.

[0013] As one example of the present invention having the second characteristic, the perforation line surrounding the tear-off area forms an arc that convexly extends downward in the vertical direction from the upper edge of the cover panel between the other edge of the first connecting part and one edge of the second connecting part, and the finger insertion opening forms an arc that convexly extends downward in the vertical direction from the lower center of the tear-off area.

[0014] As another example of the present invention having the second characteristic, the first engagement opening of the fold flap is formed of a first convex opening that opens in a convex shape from one end edge of the first insertion slit toward the upper end of the fold flap, and a first band-shaped opening that opens in a band-like shape in the horizontal direction from one opening end of the first convex opening toward one side edge of the fold flap, the second engagement opening of the fold flap is formed of a second convex opening that opens in a convex shape from the other end edge of the first insertion slit toward the upper end of the fold flap, and a second band-shaped opening that opens in a band-like shape in the horizontal direction from the other opening end of the second convex opening toward the other side edge of the fold flap, and the third engagement opening of the insertion flap is formed of a first vertical cut line that extends in the vertical direction from an inner end of the first connection portion toward an upper edge of the insertion flap, and a second vertical cut line that extends in the vertical direction from an inner end of the second connection portion toward the upper edge of the insertion flap. The container is shaped like a horizontal band that convex forward in the front-to-back direction and is surrounded by a second vertical cut line that extends in the up-down direction and a horizontal cut line that extends horizontally between the first and second vertical cut lines. When the lid panel and the insertion flap are rotated downward in the up-down direction and the insertion flap is inserted into the first insertion slit and the first and second engagement openings, the engagement protrusion of the fold-in flap engages with the third engagement opening of the insertion flap, which is shaped like a horizontal band, in a manner that makes it difficult to release it, and the lid panel blocks the top opening. When a finger is inserted into the finger insertion opening from the state in which the lid panel blocks the top opening and the separation area is rotated upward in the up-down direction, the engagement protrusion of the fold-in flap gets caught on the horizontal cut line that surrounds the third engagement opening of the insertion flap, and the separation area is separated from the lid panel and the insertion flap is separated from the lid panel.

[0015] As another example of the present invention having the second characteristic, the insertion flap has a first notched opening cut laterally inward from its other side edge toward the first engagement portion, and a second notched opening cut laterally inward from one side edge toward the second engagement portion, and when the separation area of ​​the item storage container is rotated upward in the vertical direction with the lid panel covering the top opening and a finger inserted into the finger insertion opening, the opening edge of the first notched opening of the insertion flap catches on the opening edge of the first strip-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap catches on the opening edge of the second strip-shaped opening of the fold-in flap, so that the separation area is separated from the lid panel and the insertion flap is separated from the lid panel.

[0016] As another example of the present invention having the second characteristic, the fold-in flap has a second insertion slit extending laterally from one opening end of the first strip-shaped opening toward one side edge of the fold-in flap, and a third insertion slit extending laterally from the other opening end of the second strip-shaped opening toward the other side edge of the fold-in flap, and when the separation area of ​​the item storage container is rotated upward in the vertical direction with the lid panel covering the top opening and a finger inserted into the finger insertion opening, the opening edge of the first notch opening of the insertion flap catches on the slit edge of the second insertion slit of the fold-in flap, and the opening edge of the second notch opening of the insertion flap catches on the slit edge of the third insertion slit of the fold-in flap, so that the separation area is separated from the lid panel and the insertion flap is separated from the lid panel. Effect of the Invention

[0017] According to the article storage container of the present invention having the first characteristic, when the lid panel and the insertion flap are rotated downward in the vertical direction and the insertion flap is inserted into the first insertion slit and the first and second engagement openings, the engagement protrusion of the fold-in flap engages with the third engagement opening of the insertion flap, the first engagement portion of the insertion flap engages with the first engagement opening of the fold-in flap and the second engagement portion of the insertion flap engages with the second engagement opening of the fold-in flap, so that the lid panel closes the top opening, and then the lid panel is rotated upward in the vertical direction from the state in which the lid panel closes the top opening. When the top opening is opened, the first and second insertion portions are separated from the insertion flap at the first and second perforation lines, and the lid panel and the insertion flap are separated, so that when the lid panel is rotated upward in the vertical direction to open the top opening in order to remove the items stored inside the article storage container from the state in which the top opening is closed by the lid panel, the insertion flap connected to the upper edge of the lid panel is separated from the lid panel and remains in the first insertion slit and the first and second insertion openings, and only the lid panel from which the insertion flap has been separated rotates upward in the vertical direction. Therefore, even if the article storage container is illegally opened, the lid panel and the insertion flap are separated and the insertion flap is lost from the lid panel, leaving a trace (evidence) of the opening. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0018] When the cover panel and the insertion flap are rotated vertically downward to insert the insertion flap into the first insertion slit and the first and second engagement openings, one horizontal corner portion of the engagement protrusion of the fold-in flap engages with the third band-shaped opening of the insertion flap in a manner that makes it difficult to release it, and the other horizontal corner portion of the engagement protrusion of the fold-in flap engages with the fourth band-shaped opening of the insertion flap in a manner that makes it difficult to release it, and when the top opening is opened from a state in which the cover panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, one horizontal corner portion of the engagement protrusion of the fold-in flap gets caught on the opening edge of the third band-shaped opening of the insertion flap and the other horizontal corner portion of the engagement protrusion of the fold-in flap gets caught on the opening edge of the fourth band-shaped opening of the insertion flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines. When the top opening of the item storage container is opened with the lid panel covering it, one horizontal corner of the engagement protrusion of the fold-in flap hooks onto the opening edge of the third opening band of the insertion flap, and the other horizontal corner of the engagement protrusion of the fold-in flap hooks onto the opening edge of the fourth opening band of the insertion flap, causing the first and second engagement bands to be separated from the insertion flap at the first and second perforation lines.Therefore, when the lid panel is rotated upward in the vertical direction to open the top opening, the insertion flap connected to the upper edge of the lid panel is detached from the lid panel and remains in the first insertion slit and the first and second engagement openings, and the lid panel and the insertion flap are separated and the insertion flap is lost from the lid panel. Even if the item storage container has been opened illegally, traces (evidence) of opening can be left behind. The article storage container cannot be returned to a state that appears unopened, and by looking at the article storage container after it has been opened, it is easy to tell that it has been opened, so it has an excellent anti-tampering effect and can improve the quality of product management and quality control.In the article storage container, one horizontal corner portion of the engagement protrusion of the fold-in flap engages with the third opening band of the insertion flap in a manner that makes it difficult to release, and the other horizontal corner portion of the engagement protrusion of the fold-in flap engages with the fourth opening band of the insertion flap in a manner that makes it difficult to release, and the lid panel closes the top opening, so that the top opening of the article storage container cannot be easily opened, and it is possible to prevent articles stored in the storage space from being exposed or inadvertently removed from the article storage container, and to prevent articles from being removed from the storage space.

[0019] When the top opening is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, the opening edge of the first notched opening of the insertion flap catches on the opening edge of the first band-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap catches on the opening edge of the second band-shaped opening of the fold-in flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.In this article storage container, when the top opening is opened from a state in which the lid panel covers the top opening, the opening edge of the first notched opening of the insertion flap catches on the opening edge of the first opening band of the fold-in flap, Since the opening edge of the second notched opening of the insertion flap is caught by the opening edge of the second opening band of the fold-in flap, the first and second engagement bands are securely separated from the insertion flap at the first and second perforation lines, and when the lid panel is rotated upward in the vertical direction to open the top opening, the insertion flap connected to the upper edge of the lid panel is separated from the lid panel and remains in the first insertion slit and the first and second engagement openings, and the lid panel and the insertion flap are separated and the insertion flap is lost from the lid panel, so that even if the article storage container is illegally opened, a trace (evidence) of the opening can be left. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0020] When the top opening is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, the opening edge of the first notched opening in the insertion flap catches the slit edge of the second insertion slit in the fold-in flap, and the opening edge of the second notched opening in the insertion flap catches the slit edge of the third insertion slit in the fold-in flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines, so that when the top opening is opened from a state in which the lid panel covers the top opening, the opening edge of the first notched opening in the insertion flap catches the slit edge of the second insertion slit in the fold-in flap. At the same time, the opening edge of the second notched opening of the insertion flap catches the slit edge of the third insertion slit of the fold-in flap, so that the first and second engagement belt parts are securely separated from the insertion flap at the first and second perforation lines, and when the lid panel is rotated upward in the vertical direction to open the top opening, the insertion flap connected to the upper edge of the lid panel is separated from the lid panel and remains in the first insertion slit and the first and second engagement openings, and the lid panel and the insertion flap are separated and the insertion flap is lost from the lid panel, so that even if the article storage container is illegally opened, a trace (evidence) of the opening can be left. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0021] According to the article storage container of the present invention having the second feature, when the lid panel and the insertion flap are rotated downward in the vertical direction and the insertion flap is inserted into the first insertion slit and the first and second engagement openings, the engagement protrusion engages with the first engagement opening and the lid panel closes the top opening, and when a finger is inserted into the finger insertion opening from the state in which the lid panel closes the top opening and the tear-off area is rotated upward in the vertical direction, the tear-off area is separated from the lid panel along the perforation line, and the insertion flap is separated from the lid panel, and the remaining part of the lid panel excluding the tear-off area is separated from the lid panel. Since the area rotates upward in the vertical direction to open the top opening, when the top opening is closed by the lid panel and the tear-off area of ​​the lid panel is rotated upward in the vertical direction to open the top opening in order to remove the items stored inside the article storage container, the tear-off area of ​​the lid panel and the insertion flap connected to the upper edge of the lid panel are separated from the lid panel, the insertion flap remains in the first insertion slit and the first and second engagement openings, and only the remaining area of ​​the lid panel from which the insertion flap and tear-off area have been separated rotates upward in the vertical direction. Therefore, even if the article storage container is illegally opened, the tear-off area of ​​the lid panel and the insertion flap are separated from the lid panel and the tear-off area and the insertion flap are lost from the lid panel, leaving a trace (evidence) of the opening. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0022] In an item storage container in which the perforation line surrounding the separation area forms an arc that convex downward in the vertical direction from the upper edge of the lid panel between the other edge of the first connecting part and one edge of the second connecting part, and the finger insertion opening forms an arc that convex downward in the vertical direction from the lower center of the separation area, a finger can be easily inserted into the arc-shaped finger insertion opening, and when the separation area of ​​the lid panel is rotated upward in the vertical direction with a finger inserted into the finger insertion opening, the separation area is easily separated from the lid panel along the arc-shaped perforation line and the insertion flap is easily separated from the lid panel, and the separation area and insertion flap of the lid panel are separated from the lid panel and the separation area and insertion flap are lost from the lid panel, leaving traces (evidence) that it has been opened.

[0023] When the lid panel and the insertion flap are rotated downward in the vertical direction and the insertion flap is inserted into the first insertion slit and the first and second engagement openings, the engagement protrusion of the fold flap engages with the third engagement opening of the insertion flap formed in a horizontally elongated band shape in a manner that makes it difficult to release it, and the lid panel closes the top opening, and when the separation area is rotated upward in the vertical direction with a finger inserted into the finger insertion opening from a state in which the lid panel closes the top opening, the engagement protrusion of the fold flap gets caught on the first and second vertical cut lines and horizontal cut lines surrounding the third engagement opening of the insertion flap, and the separation area is separated from the lid panel and the insertion flap is separated from the lid panel. When the tear-off area of ​​the lid panel is rotated upward in the vertical direction to open the top opening in order to remove the items stored inside the article storage container from the state in which the top opening is closed, the engagement protrusion of the fold-in flap gets caught on the horizontal cut line surrounding the third engagement opening of the insertion flap, the tear-off area of ​​the lid panel and the insertion flap connected to the upper edge of the lid panel are separated from the lid panel, the insertion flap remains in the first insertion slit and the first and second engagement openings, and the tear-off area of ​​the lid panel and the insertion flap are separated from the lid panel and are lost from the lid panel, so that a trace (evidence) of opening can be left. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0024] When the lid panel is turned upward in the vertical direction with the top opening closed by the lid panel and a finger inserted into the finger insertion opening, the opening edge of the first notched opening of the insertion flap catches the opening edge of the first band-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap catches the opening edge of the second band-shaped opening of the fold-in flap, and the tear-off area is separated from the lid panel and the insertion flap is separated from the lid panel. In order to remove an article stored inside the article storage container from a state in which the top opening is closed by the lid panel, the tear-off area of ​​the lid panel is turned upward in the vertical direction. When the top opening is opened, the opening edge of the first notched opening of the insertion flap catches on the opening edge of the first band-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap catches on the opening edge of the second band-shaped opening of the fold-in flap, the cut-off area of ​​the lid panel and the insertion flap connected to the upper edge of the lid panel are cut off from the lid panel, the insertion flap remains in the first insertion slit and the first and second engagement openings, the cut-off area of ​​the lid panel and the insertion flap are separated from the lid panel, and the cut-off area and the insertion flap are lost from the lid panel, so that a trace (evidence) of opening can be left. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control.

[0025] When the lid panel is turned upward in the vertical direction with the top opening closed by the lid panel and a finger inserted into the finger insertion opening, the opening edge of the first notch opening of the insertion flap is caught by the slit edge of the second insertion slit of the fold-in flap, and the opening edge of the second notch opening of the insertion flap is caught by the slit edge of the third insertion slit of the fold-in flap, and the tear-off area is separated from the lid panel and the insertion flap is separated from the lid panel. In order to remove an article stored inside the article storage container from a state in which the top opening is closed by the lid panel, the tear-off area of ​​the lid panel is turned upward in the vertical direction. When the top opening is opened, the opening edge of the first notch opening of the insertion flap gets caught on the slit edge of the second insertion slit of the fold-in flap, and the opening edge of the second notch opening of the insertion flap gets caught on the slit edge of the third insertion slit of the fold-in flap, the cut-off area of ​​the lid panel and the insertion flap connected to the upper edge of the lid panel are cut off from the lid panel, the insertion flap remains in the first insertion slit and the first and second engagement openings, the cut-off area of ​​the lid panel and the insertion flap are separated from the lid panel, and the cut-off area and the insertion flap are lost from the lid panel, so that a trace (evidence) of opening can be left. The article storage container cannot be returned to a state that appears unopened, and it is easy to tell that it has been opened by looking at the article storage container after it has been opened, so it has an excellent tamper-proof effect and can improve the quality of product management and quality control. [Brief description of the drawings]

[0026] [Figure 1] FIG. 2 is a front perspective view showing an example of an item storage container as viewed from the front panel side. [Diagram 2] FIG. 4 is an exploded plan view of the container before assembly. [Diagram 3] A close-up of the front panel and fold-out flap. [Figure 4] A close-up view of the lid panel and the insert flap. [Diagram 5] 1 is a front perspective view of an item storage container with a top opening closed by a lid panel. FIG. [Figure 6]FIG. 4 is a front perspective view of the container with the lid panel pivoted upward in the vertical direction. [Figure 7] FIG. 11 is a front perspective view showing another example of an item storage container as viewed from the rear panel side. [Figure 8] FIG. 4 is an exploded plan view of the container before assembly. [Figure 9] A close-up of the front panel and fold-out flap. [Figure 10] A close-up view of the lid panel and the insert flap. [Figure 11] 1 is a front perspective view of an item storage container with a top opening closed by a lid panel. FIG. [Figure 12] FIG. 4 is a front perspective view of the container with the lid panel pivoted upward in the vertical direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] The details of the article storage container according to the present invention will be described below with reference to the attached drawings such as Fig. 1, which is a front perspective view showing an example of an article storage container 10A as seen from the front panel 11 side. Fig. 2 is an expanded plan view of the article storage container 10A before assembly, and Fig. 3 is a partially enlarged view of the front panel 11 and the fold-in flap 19. Fig. 4 is a partially enlarged view of the lid panel 15 and the insertion flap 20. Fig. 1 shows the state before the insertion flap 20 is inserted into the insertion slit 49 and the first and second engagement openings (before the top opening 17 is closed). In Figs. 1 and 2, the up-down direction is indicated by arrow X, the lateral direction is indicated by arrow Y, and the front-rear direction is indicated by arrow Z.

[0028] The container 10A is made by cutting box blanks (blank sheets) from an original roll and assembling the box blanks (developed plan view) shown in Fig. 2. The container 10A is a hexahedral container (box) that is a regular rectangular prism that is long in the vertical direction. However, the container 10A may also be a hexahedral container (box) that is a regular rectangular prism that is long in the horizontal direction.

[0029] The item storage container box 10A is formed from a front panel 11 (front plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a back panel 12 (back plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a first side panel 13 (first side plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a second side panel 14 (second side plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a lid panel 15 (lid plate) that covers the top opening 17, a bottom flap 16 (bottom panel) that covers the bottom opening 18, a fold-in flap 19 and an insertion flap 20 that cover the top opening 17, a glue flap 21, a first top flap 22 (side flap), and a second top flap 23 (side flap).

[0030] In the developed plan view of FIG. 2, the order from left to right in the horizontal direction is the glue flap 21 → the front panel 11 → the first side panel 13 → the back panel 12 → the second side panel 14. The bottom flap 16 is formed of the first main bottom flap 16a and the first auxiliary bottom flap 16c, and the second main bottom flap 16b and the second auxiliary bottom flap 16d. The first main bottom flap 16a has a substantially triangular glue flap portion 24 that connects (joins) the first main bottom flap 16a and the first auxiliary bottom flap 16c. The second main bottom flap 16b has a substantially triangular glue flap portion 24 that connects (joins) the second main bottom flap 16b and the second auxiliary bottom flap 16d. The first main bottom flap 16a and the second main bottom flap 16b have the same shape and size, and their planar shapes are formed into a substantially triangular shape. The first auxiliary bottom flap 16b and the second auxiliary bottom flap 16d are of the same shape and size, and their planar shapes are formed into a substantially triangular shape.

[0031] In the article storage container 10A, the front panel 11 and the back panel 12 face each other with a space therebetween in the front-rear direction, the first side panel 13 and the second side panel 14 face each other with a space therebetween in the lateral direction, and the cover panel 15 and the bottom flap 16 face each other with a space therebetween in the up-down direction. In the article storage container 10A, an article storage space 25 of a predetermined volume is defined, surrounded by the panels 11-15 and the bottom flap 16. The article storage container 10A stores predetermined articles (goods) in the article storage space 25, and is placed in a predetermined location such as an article display shelf or an article display case.

[0032] The materials used for the article storage container 10A (including the panels 11-15 and bottom flaps 16 (first main bottom flap 16a, first auxiliary bottom flap 16c, second main bottom flap 16b, second auxiliary bottom flap 16d), fold-in flap 19, insert flap 20, glue flap 21, first and second top flaps 22, 23) (including the article storage container 10B) are paper (cardboard), synthetic resin sheets (plastic sheets), and composite sheets.

[0033] For paper (paperboard), chipboard, craft board, coated board, uncoated board, coated ivory, corrugated board, high-grade paperboard, special paperboard, non-wood paper, thinned wood paper, etc. are used. For synthetic resin sheets, PP sheets, PET sheets, etc. are used. Synthetic resin sheets may be colored transparent, colored semi-transparent, colorless transparent, or colorless semi-transparent. For composite sheets, laminated sheets of paper and synthetic resin sheets, aluminum-deposited paper, foil paper, fancy paper, water-resistant / oil-resistant paper, heat-resistant paper, antibacterial paperboard, etc. are used. The container 10A (including the container 10B) may be subjected to various surface treatments (press coat, UV coat, film coat). The material of the container 10A (including the container 10B) is not particularly limited, and the material of the container 10A includes not only currently used materials but also all materials that will be used in the future.

[0034] As shown in the developed plan view of FIG. 2, the glue flap 21 is located on the side of the front panel 11 and is connected to the front panel 11 via a side edge 26 (a fold line where the glue flap 21 is folded at a substantially right angle to the front panel 11) extending in the vertical direction. The fold-in flap 21 is located above the front panel 11 and is connected to the front panel 11 via an upper edge 27 (a fold line where the fold-in flap 21 is folded at a substantially right angle to the front panel 11) extending in the horizontal direction. The fold-in flap 21 can be rotated in the vertical direction around the upper edge 27 (the lower edge 27 of the fold-in flap 21). The first main bottom flap 16a is located below the front panel 11 and is connected to the front panel 11 via a lower edge 28 (a fold line where the first main bottom flap 16a is folded at a substantially right angle to the front panel 11) extending in the horizontal direction.

[0035] The front panel 11 is located to the side of the first side panel 13 and is connected to the first side panel 13 via a side edge 29 extending in the vertical direction (a fold line where the front panel 11 is folded at a substantially right angle to the first side panel 13). The first top flap 22 (first side flap) is located above the first side panel 13 and is connected to the first side panel 13 via a top edge 30 extending in the horizontal direction (a fold line where the first top flap 22 is folded at a substantially right angle to the first side panel 12). The first auxiliary bottom flap 16c is located below the first side panel 13 and is connected to the first side panel 13 via a bottom edge 31 extending in the horizontal direction (a fold line where the first auxiliary bottom flap 16c is folded at a substantially right angle to the first side panel 13).

[0036] The first side panel 13 is located to the side of the back panel 12 and is connected to the back panel 12 via a vertically extending side edge 32 (a fold line where the second side panel 14 is folded at a substantially right angle to the back panel 12). The lid panel 15 is located above the back panel 12 and is connected to the back panel 12 via a horizontally extending upper edge 33 (a fold line where the lid panel 15 is folded at a substantially right angle to the back panel 12). The second main bottom flap 16b is located below the back panel 12 and is connected to the back panel 12 via a horizontally extending lower edge 34 (a fold line where the second main bottom flap 16b is folded at a substantially right angle to the back panel 12). The insertion flap 20 is located above the lid panel 15 and is connected to the lid panel 15 via a top edge 35 extending laterally (a fold line along which the insertion flap 20 is folded at a substantially right angle to the lid panel 15). The insertion flap 20 is vertically rotatable about the top edge 35 (the bottom edge 35 of the insertion flap 20).

[0037] The back panel 12 is located to the side of the second side panel 14 and is connected to the second side panel 14 via a vertically extending side edge 36 (a fold line where the back panel 12 is folded at a substantially right angle relative to the first side panel 13). The second top flap 23 (second side flap) is located above the second side panel 14 and is connected to the second side panel 14 via a horizontally extending upper edge 37 (a fold line where the second top flap 23 is folded at a substantially right angle relative to the second side panel 14). The second auxiliary bottom flap 16d is located below the second side panel 14 and is connected to the second side panel 14 via a horizontally extending lower edge 38 (a fold line where the second auxiliary bottom flap 16d is folded at a substantially right angle relative to the second side panel 14).

[0038] The fold-in flap 19 has a first insertion slit 39 and a first engagement opening 40, a second engagement opening 41 and an engagement protrusion 42, a second insertion slit 43 and a third insertion slit 44. The fold-in flap 19 has a horizontal length dimension that is approximately the same as that of the lid panel 15 in the horizontal direction. The first insertion slit 39 is formed in the horizontal center of the lower edge 27 (upper edge 27) of the fold-in flap 19 and extends in the horizontal direction. The insertion flap 20 is inserted into the first insertion slit 39.

[0039] The first insertion opening 40 is formed at the lower end edge 27 (upper end edge 27) of the folding flap 19 between one end edge 45 of the first insertion slit 43 and one side edge 46 of the folding flap 19. The insertion flap 20 is inserted into the first insertion opening 40. The first insertion opening 40 is located approximately in the center of one half of the folding flap 19 when the folding flap 19 is horizontally divided into two. The first insertion opening 40 is formed of a first semicircular opening 47 that opens in a semicircular shape by drawing an arc from one end edge 45 of the first insertion slit 43 toward the upper end (upper end edge) of the folding flap 19 so as to be convex, and a first band-shaped opening 49 that is connected to one opening end 48 of the first semicircular opening 47 and opens in a band-like shape from one opening end 48 toward one side edge 46 of the folding flap 19 in the horizontal direction.

[0040] The first semicircular opening 47 of the folding flap 19 is formed by cutting the folding flap 19 along a first arc-shaped cut line 50 that forms an arc so as to protrude upward (to the upper edge) from the lower edge 27 (upper edge 27) of the folding flap 19. The first strip-shaped opening 49 of the folding flap 19 is formed by cutting the folding flap 19 along a first horizontal cut line 51 that extends straight in the horizontal direction from one opening end of the first semicircular opening 50 and a first vertical cut line 52 that extends straight in the vertical direction from one edge of the first horizontal cut line 51.

[0041] The second insertion opening 41 is formed at the lower end edge 27 (upper end edge 27) of the folding flap 19 between the other end edge 53 of the first insertion slit 39 and the other side edge 54 of the folding flap 19. The insertion flap 20 is inserted into the second insertion opening 41. The second insertion opening 41 is located approximately in the center of the other half of the folding flap 19 when the folding flap 19 is horizontally divided into two. The second insertion opening 41 is formed of a second semicircular opening 55 that opens in a semicircular shape by drawing an arc so as to be convex from the other end edge 53 of the first insertion slit 39 toward the upper side (upper end edge) of the folding flap 19, and a second band-shaped opening 57 that is connected to the other opening end 56 of the second semicircular opening 55 and opens in a band-like shape in the horizontal direction from the other opening end 56 toward the other side edge 54 of the folding flap 19.

[0042] The second semicircular opening 55 of the folding flap 19 is formed by cutting the folding flap 19 along a second arc-shaped cut line 58 that forms a convex arc from the lower edge 27 (upper edge 27) of the folding flap 19 upward (to the upper edge). The second strip-shaped opening 57 of the folding flap 19 is formed by cutting the folding flap 19 along a second horizontal cut line 59 that extends straight in the horizontal direction from the other opening end of the second semicircular opening 58 and a second vertical cut line 60 that extends straight in the vertical direction from the other edge of the second horizontal cut line 59.

[0043] The engagement protrusion 42 is surrounded by the first insertion slit 39 and the inner edges of the first and second engagement openings 40, 41 (the inner edge of the arc-shaped first cut line 50 and the inner edge of the arc-shaped second cut line 58) and is formed in a long strip shape in the horizontal direction. The engagement protrusion 42 protrudes forward in the front-rear direction when the folding flap 19 is turned downward in the vertical direction to close the top opening 17. The second insertion slit 43 is formed in the lower end edge 27 of the folding flap 19, is connected to one opening end of the first strip-shaped opening 49, and extends laterally from the one opening end toward one side edge 46 of the folding flap 19. The insertion flap 20 is inserted into the second insertion slit 43. The third insertion slit 44 is formed in the lower edge 27 of the fold-in flap 19, and is connected to the other opening end of the second band-shaped opening 57 and extends laterally from the other opening end toward the other side edge 54 of the fold-in flap 19. The insertion flap 20 is inserted into the third insertion slit 44.

[0044] The insertion flap 20 has a third insertion opening 61, a first insertion portion 62, a second insertion portion 63, a first notched opening 64, and a second notched opening 65. The insertion flap 20 has a lateral length dimension that is shorter than that of the cover panel 15. The third insertion opening 61 is formed in the center of the lower edge 35 (upper edge 35) of the insertion flap 20. The third engagement opening 61 is formed from a third semicircular opening 66 located at its center (the center of the insertion flap 20) and opening in a semicircular shape, drawing an arc so as to convex upward toward the insertion flap 20, a third band-shaped opening 69 connected to the other opening end 67 of the third semicircular opening 66 and opening in a band-like shape laterally from the other opening end 67 toward the other side edge 68 of the insertion flap 20, and a fourth band-shaped opening 72 connected to one opening end 70 of the third semicircular opening 66 and opening in a band-like shape laterally from the one opening end 70 toward one side edge 71 of the insertion flap 20.

[0045] The third semicircular opening 66 of the third insertion opening 61 is formed by cutting the insertion flap 20 along a third arc-shaped cut line 73 that forms an arc so as to protrude upward (toward the upper edge) from the side of the lower edge 35 of the insertion flap 20 at the center of the third insertion opening 61. The third band-shaped opening 69 of the third insertion opening 61 is formed by cutting the insertion flap 20 along a third horizontal cut line 74 that extends straight in the horizontal direction from the other opening end 67 of the third semicircular opening 66 and a third vertical cut line 75 that extends straight in the vertical direction from the other edge of the third horizontal cut line 74. The fourth strip-shaped opening 72 of the third insertion opening 61 is created by cutting the insertion flap 20 along a fourth horizontal cut line 76 extending straight horizontally from one opening end 70 of the third semicircular opening 66 and along a fourth vertical cut line 77 extending straight vertically from one edge of the fourth horizontal cut line 76.

[0046] The first insertion portion 62 extends in a strip-like shape in the horizontal direction from the other edge (third vertical cut line 75) of the third insertion opening 61. The first insertion portion 62 is connected to the upper edge 35 of the lid panel 15 via a first perforation line 78 that extends in the horizontal direction from the other edge (third vertical cut line 75) of the third insertion opening 61 toward the other side edge 68 of the insertion flap 20. The first insertion portion 62 can be separated from the upper edge 35 of the lid panel 15 at the first perforation line 78. The first insertion portion 62 is inserted into the first insertion opening 40 of the fold-in flap 19 when the insertion flap 20 is inserted into the first insertion slit 39 and the first and second insertion openings 40, 41.

[0047] The second insertion portion 63 extends in a strip shape from one edge (fourth vertical cut line 77) of the third insertion opening 61 in the horizontal direction. The second insertion portion 63 is connected to the upper edge 35 of the lid panel 15 via a second perforation line 79 extending laterally from one edge (fourth vertical cut line 77) of the third insertion opening 61 toward one side edge 71 of the insertion flap 20. The second insertion portion 63 can be separated from the upper edge 35 of the lid panel 15 at the second perforation line 79. The second insertion portion 63 is inserted into the second insertion opening 41 of the fold-in flap 19 when the insertion flap 30 is inserted into the first insertion slit 39 and the first and second insertion openings 40, 41.

[0048] The first cutout opening 64 is cut laterally inward from the other side edge 68 of the insertion flap 20 toward the first engagement portion 62, and opens in a strip shape in the horizontal direction. The second cutout opening 65 is cut laterally inward from one side edge 71 of the insertion flap 20 toward the second engagement portion 63, and opens in a strip shape in the horizontal direction. The first cutout opening 64 is created by cutting out the insertion flap 20 by a fifth vertical cut line 80 extending vertically from the other edge of the first engagement portion 62 and a fifth horizontal cut line 81 extending straight in the horizontal direction from the upper edge of the fifth vertical cut line 80. The second cutout opening 65 is created by cutting out the insertion flap 20 along a sixth vertical cut line 82 extending vertically from one edge of the second engagement portion 63 and a sixth horizontal cut line 83 extending horizontally in a straight line from the upper edge of the sixth vertical cut line 82.

[0049] Fig. 5 is a front perspective view of the container 10A with the top opening 17 closed by the cover panel 15, and Fig. 6 is a front perspective view of the container 10A with the cover panel 15 rotated upward in the vertical direction. An example of a procedure for assembling the container box 10A from the box blank (developed plan view) shown in Fig. 2 is as follows. The glue flap 21 is folded (folded) at the side edge 26 (the fold line for folding the glue flap 21 at a substantially right angle to the front panel 11) so that the glue flap 21 is substantially perpendicular to the front panel 11, and the front panel 11 is folded (folded) at the side edge 29 (the fold line for folding the front panel 11 at a substantially right angle to the first side panel 13) so that the front panel 11 is substantially perpendicular to the first side panel 13.

[0050] The first side panel 13 is folded (bent) at a side edge 32 (a fold line that folds the first side panel 13 at approximately a right angle to the back panel 12) so that the first side panel 13 is approximately perpendicular to the back panel 12, and the back panel 12 is folded (bent) at a side edge 36 (a fold line that folds the back panel 12 at approximately a right angle to the second side panel 14) so ​​that the back panel 12 is approximately perpendicular to the second side panel 14.

[0051] The first main bottom flap 16a is folded (bent) at the lower edge 28 (a fold line that folds the first main bottom flap 16a at approximately a right angle to the front panel 11) so that the first main bottom flap 16a is approximately perpendicular to the front panel 11, and the first auxiliary bottom flap 16c is folded (bent) at the lower edge 31 (a fold line that folds the first auxiliary bottom flap 16c at approximately a right angle to the first side panel 13) so that the first auxiliary bottom flap 16c is approximately perpendicular to the first side panel 13.

[0052] The second main bottom flap 16b is folded (bent) at the lower edge 34 (a fold line that folds the second main bottom flap 16b at approximately a right angle to the back panel 12) so that the second main bottom flap 16b is approximately perpendicular to the back panel 12, and the second auxiliary bottom flap 16d is folded (bent) at the lower edge 38 (a fold line that folds the second auxiliary bottom flap 16d at approximately a right angle to the second side panel 14) so ​​that the second auxiliary bottom flap 16d is approximately perpendicular to the second side panel 14.

[0053] After folding the glue flap 21, the front panel 11, the first side panel 13, the back panel 12, the first main bottom flap 16a, the first auxiliary bottom flap 16c, the second main bottom flap 16b, and the second auxiliary bottom flap 16d in order, the outer surface of the glue flap 21 is overlapped with the inner surface of the second side panel 14, and the outer surface of the glue flap 21 is joined to the inner surface of the second side panel 14 by glue or adhesive. The inner surface of the glue flap portion 24 of the first main bottom flap 16a is overlapped with the outer surface of the first auxiliary bottom flap 16c, and the inner surface of the glue flap portion 24 of the first main bottom flap 16a is joined to the outer surface of the first auxiliary bottom flap 16c by glue or adhesive. The inner surface of the glue tab 24 of the second main bottom flap 16b is overlapped with the outer surface of the second auxiliary bottom flap 16d, and the inner surface of the glue tab 24 of the second main bottom flap 16b is joined to the outer surface of the second auxiliary bottom flap 16d by glue or adhesive.

[0054] When the glue flap 21, the glue portion 24 of the first main bottom flap 16a, and the glue portion 24 of the second main bottom flap 16b are joined, the article storage container 10A has an article storage space 25 surrounded by the front panel 11, the first side panel 13, the back panel 12, the second side panel 14, and the bottom flap 16 (the first main bottom flap 16a, the second main bottom flap 16c, the first auxiliary bottom flap 16b, and the second auxiliary bottom flap 16d). The bottom opening 18 is closed by the bottom flap 16 (the first main bottom flap 16a, the second main bottom flap 16c, the first auxiliary bottom flap 16b, and the second auxiliary bottom flap 16d). The top opening 17 is in an open state. A predetermined article is stored in the article storage space 25 from the top opening 17.

[0055] After storing items in the item storage space 25, the second top flap 23 is folded (bent) at the upper edge 37 (the fold line that folds the second top flap 23 at approximately a right angle to the second side panel 14) so ​​that the second top flap 23 is approximately perpendicular to the second side panel 14, and the first top flap 22 is folded (bent) at the upper edge 30 (the fold line that folds the first top flap 22 at approximately a right angle to the first side panel 13) so that the first top flap 22 is approximately perpendicular to the first side panel 13.

[0056] The fold-in flap 19 is folded (bent) toward the rear panel 11 at the upper edge 27 (the fold line along which the fold-in flap 19 is bent at a substantially right angle to the front panel 11) so that the fold-in flap 19 is substantially perpendicular to the front panel 11. The inner surface of the fold-in flap 19 overlaps the outer surfaces of the first and second top flaps 22, 23. When the fold-in flap 19 is folded toward the rear panel 12, the engagement protrusion 42 extending in a horizontally elongated U-shape becomes convex toward the front in the front-rear direction. Furthermore, the first engagement opening 40 (first semicircular opening 47, first strip-shaped opening 49) opens in the vertical direction, and the second engagement opening 41 (second semicircular opening 55, second strip-shaped opening 57) opens in the vertical direction.

[0057] Next, the insertion flap 15 is folded (bent) downward in the vertical direction at the upper edge 35 (a folding line along which the insertion flap 20 is folded at a substantially right angle to the lid panel 15) so that the insertion flap 20 is substantially perpendicular to the lid panel 15. When the insertion flap 20 is folded relative to the lid panel 15, the third engagement opening 61 (the third semicircular opening 66, the third band-shaped opening 69, the fourth band-shaped opening 72) and the first and second notched openings 64, 65 open in the front-to-rear direction, and the first and second engagement portions 62, 63 extend in the vertical direction.

[0058] After folding the insertion flap 20 relative to the lid panel 15, the lid panel 15 is folded (bent) at the upper edge 33 (the folding line along which the lid panel 15 is folded at a substantially right angle relative to the front panel 11) so that the lid panel 15 is substantially perpendicular to the front panel 11, and the lid panel 15 is rotated downward in the vertical direction toward the front panel 11, while the insertion flap 20 is gradually inserted into the first insertion slit 39 and the first and second engagement openings 40, 41 so that the insertion flap 20 is positioned inside the front panel 11. When the insertion flap 20 is inserted into the first insertion slit 39 and the first and second engagement openings 40, 41, the outer surface of the insertion flap 20 (the upper edge of the insertion flap 20) slides against the inner surface of the front panel 11, and the insertion flap 20 gradually enters the item storage space 25.

[0059] When the entire insertion flap 20 enters the item storage space 26 (first insertion slit 39, first and second engagement openings 40, 41), the engagement protrusion 42 of the folding flap 19 is positioned in the third engagement opening 61 of the insertion flap 20 (third semicircular opening 66, third strip-shaped opening 69, fourth strip-shaped opening 72), and one horizontal corner portion of the engagement protrusion 42 extending forward in the front-to-back direction of the folding flap 19 engages with difficulty in releasing into the third strip-shaped opening 69 opening in the front-to-back direction of the insertion flap 20, and the other horizontal corner portion of the engagement protrusion 42 engages with difficulty in releasing into the fourth strip-shaped opening 72 opening in the front-to-back direction of the insertion flap 20.

[0060] Furthermore, the first engagement portion 62 extending in the vertical direction of the insertion flap 20 engages with difficulty in being released into the first engagement opening 40 opening in the vertical direction of the folding flap 19, and the second engagement portion 63 extending in the vertical direction of the insertion flap 20 engages with difficulty in being released into the second engagement opening 41 opening in the vertical direction of the folding flap 19, the opening edge of the first notch opening 64 of the insertion flap 20 (the opening edge defining the first notch opening 64 of the insertion flap 20) engages with difficulty in being released into the slit edge of the second insertion slit 43 of the folding flap 19, and the opening edge of the second notch opening 65 of the insertion flap 20 (the opening edge defining the second notch opening 65 of the insertion flap 20) engages with difficulty in being released into the slit edge of the third insertion slit 44 of the folding flap 19.

[0061] When the entire insertion flap 20 is inserted into the article storage space 26 (first insertion slit 39, first and second engagement openings 40, 41), the state shown in FIG. 5 is reached, in which the inner surface of the lid panel 15 abuts against the outer surface of the fold-in flap 19, and the top opening 17 of the article storage container 10A is closed by the first and second top flaps 22, 23, the fold-in flap 19, and the lid panel 15. The article storage container 10A is placed in a predetermined location on an article display shelf, an article display case, or the like in the state shown in FIG. 5. After the insertion flap 20 is inserted into the first insertion slit 39 and the first and second engagement openings 40, 41, it becomes difficult to release the engagement (engagement) of the insertion flap 20 with the first insertion slit 39 and the first and second engagement openings 40, 41.

[0062] In the article storage container 10A, the insertion flap 20 is inserted into the article storage space 26 (the first insertion slit 39, the first and second engagement openings 40, 41), the engagement protrusion 42 of the fold-in flap 19 engages with the third semicircular opening 66 and the third and fourth band-shaped openings 69, 72 of the insertion flap 20, the first and second engagement portions 62, 63 of the insertion flap 20 engage with the first and second engagement openings 40, 41 of the fold-in flap 19, and the first and second notched openings 64, 65 of the insertion flap 20 engage with the third semicircular opening 66 and the third and fourth band-shaped openings 69, 72 of the insertion flap 20. By engaging the fold-in flap 19 with the second and third insertion slits 43, 44 of the flap 18, not only can the top opening 17 be closed, but since it is difficult to release the engagement (engagement) between the fold-in flap 19 and the insertion flap 20, the top opening 17 of the item storage container 10A cannot be easily opened, thereby preventing the items stored in the item storage space 25 from being exposed or inadvertently removed from the item storage container 10A, and also preventing the items from being removed from the item storage space 25.

[0063] In an article storage container 10A in which the folding flap 19 and the insertion flap 20 are engaged (engaged), when an attempt is made to rotate the lid panel 15 upward in the vertical direction, one horizontal corner portion of the engagement protrusion 42 of the folding flap 19 catches on the opening edge of the third band-shaped opening 69 of the insertion flap 20, and the other horizontal corner portion of the engagement protrusion 42 of the folding flap 19 catches on the opening edge of the fourth band-shaped opening 72 of the insertion flap 20, the opening edge of the first notch opening 64 of the insertion flap 20 catches on the slit edge of the second insertion slit 43 of the folding flap 19, and the opening edge of the second notch opening 65 of the insertion flap 20 catches on the slit edge of the third insertion slit 44 of the folding flap 19, preventing the lid panel 15 from rotating upward in the vertical direction and preventing the lid panel 15 (top opening 17) from being rotated (opened).

[0064] When the lid panel 15 is forcibly rotated upward in the vertical direction with the fold-in flap 19 and the insertion flap 20 engaged, in an attempt to forcibly release the engagement between the fold-in flap 19 and the insertion flap 20, the rotation force acts on the first engagement portion 62 and the second engagement portion 63 located on both lateral sides of the third engagement opening 61. When the rotation force acting on the first engagement portion 61 and the second engagement portion 63 is strong enough to break the first and second perforations 78, 79 formed on the first and second engagement portions 61, 63, the first engagement portion 61 is cut off (separated) from the insertion flap 20 at the first perforation line 78, and the second engagement portion 63 is cut off (separated) from the insertion flap 20 at the second perforation line 79.

[0065] When the first and second engagement portions 61, 63 are separated from the insertion flap 20, the lid panel 15 and the insertion flap 20 are vertically separated at the first and second engagement portions 61, 63, and only the lid panel 15 pivots upward in the vertical direction (see FIG. 6). After only the lid panel 15 is pivoted upward in the vertical direction, the fold-in flap 19 is pivoted upward in the vertical direction, and the first and second top flaps 22, 23 are pivoted upward in the vertical direction, thereby opening the top opening 17.

[0066] In the article storage container 10A, when the top opening 17 is opened to forcibly release the engagement between the fold-in flap 19 and the insertion flap 20, the first insertion portion 62 breaks along a first perforation line 78 formed in the first insertion portion 62 and is separated from the insertion flap 20, and the second insertion portion 63 breaks along a second perforation line 79 formed in the second insertion portion 63 and is separated from the insertion flap 20, and the lid panel 15 and the insertion flap 20 are separated. The insertion flap 20 remains in the article storage space 26 of the article storage container 10A, and only the lid panel 15 pivots upward in the vertical direction. When the lid panel 15 and the insertion flap 20 are separated from the item storage container 10A and the top opening 17 is opened, the insertion flap 20 cannot be re-inserted into the fold-in flap 19, and the top opening 17 cannot be blocked by the lid panel 15.

[0067] In the article storage container 10A, when the insertion flap 20 is inserted into the article storage space 25 (the first insertion slit 30, the first and second engagement openings 40, 41), the horizontal corner portions of the engagement protrusion 42 of the fold-in flap 19 are engaged with the third and fourth band-shaped openings 69, 72 of the insertion flap 20 in a manner that makes it difficult to release them, the first and second engagement portions 62, 63 of the insertion flap 20 are engaged with the first and second engagement openings 40, 41 of the fold-in flap 19, and the opening edges of the first and second notched openings 64, 65 of the insertion flap 20 are engaged with the slit edges of the second and third insertion slits 43, 44 of the fold-in flap 19, so that the lid panel 15 closes the top opening 17, and the engagement between the fold-in flap 19 and the insertion flap 20 is forcibly released. When the top opening 17 is opened as shown in FIG. 14, the first perforation line 78 of the first engagement portion 62 at the first engagement opening 40 breaks, separating the first engagement portion 62 from the insertion flap 20, and the second perforation line 79 of the second engagement portion 63 at the second engagement opening 41 breaks, separating the second engagement portion 63 from the insertion flap 20, and the lid panel 15 and the insertion flap 20 are separated at the first and second engagement portions 62, 63. Therefore, when the lid panel 15 is pivoted upward in the vertical direction to open the top opening 17, the insertion flap 20 connected to the upper edge 35 of the lid panel 15 remains in the item storage space 25 (within the first insertion slit 39), and only the lid panel 15 from which the insertion flap 20 has been separated pivots upward in the vertical direction. Therefore, even if the container 10A is tampered with, the lid panel 15 and the insertion flap 20 separate at the first and second engagement portions 62, 63, and the insertion flap 20 is lost from the lid panel 15, so that a trace (evidence) of the opening can be left behind reliably. The container 10A cannot be returned to a state that appears unopened, and by looking at the container 10A after it has been opened, it is easily known that the container 10A has been opened, providing excellent tamper prevention effects and improving the quality of product management and quality control.

[0068] Fig. 7 is a front perspective view showing another example of the article storage container 10B as seen from the rear panel 12 side, and Fig. 8 is an expanded plan view of the article storage container 10B before assembly. Fig. 9 is a partial enlarged view of the rear panel 12 and the fold-in flap 19, and Fig. 10 is a partial enlarged view of the lid panel 15 and the insertion flap 20. Fig. 7 shows the state before the insertion flap 20 is inserted into the insertion slit 49 and the first and second engagement openings 40, 41 (before the top opening 17 is closed). In Figs. 7 and 8, the up-down direction is indicated by an arrow X, the lateral direction is indicated by an arrow Y, and the front-rear direction is indicated by an arrow Z.

[0069] The container 10B is made by cutting box blanks (blank sheets) from the original roll and assembling the box blanks (developed plan view) shown in Fig. 8. The container 10B is a hexahedral container (box) that is a regular rectangular prism that is long in the vertical direction. However, the container 10B may also be a hexahedral container (box) that is a regular rectangular prism that is long in the horizontal direction.

[0070] The item storage container box 10B is formed from a front panel 11 (front plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a back panel 12 (back plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a first side panel 13 (first side plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a second side panel 14 (second side plate) molded into a rectangular (quadrant) that is long in the vertical direction and has a specified area, a lid panel 15 (lid plate) that covers the top opening 17, a bottom flap 16 (bottom panel) that covers the bottom opening 18, a fold-in flap 19 and an insertion flap 20 that cover the top opening 17, a glue flap 21, a first top flap 22 (side flap), and a second top flap 23 (side flap).

[0071] In the developed plan view of FIG. 8, the order from left to right in the horizontal direction is the glue flap 21, the back panel 12, the first side panel 13, the front panel 11, and the second side panel 14. The bottom flap 16 is formed of the first main bottom flap 16a and the first auxiliary bottom flap 16c, and the second main bottom flap 16b and the second auxiliary bottom flap 16d. The first main bottom flap 16a has a substantially triangular glue flap portion 24 that connects (joins) the first main bottom flap 16a and the first auxiliary bottom flap 16c. The second main bottom flap 16b has a substantially triangular glue flap portion 25 that connects (joins) the second main bottom flap 16b and the second auxiliary bottom flap 16d. The first main bottom flap 16a and the second main bottom flap 16b have the same shape and size, and their planar shapes are formed into a substantially triangular shape. The first auxiliary bottom flap 16b and the second auxiliary bottom flap 16d are of the same shape and size, and their planar shapes are formed into a substantially triangular shape.

[0072] In the article storage container 10B, the front panel 11 and the back panel 12 face each other with a space therebetween in the front-rear direction, the first side panel 13 and the second side panel 14 face each other with a space therebetween in the lateral direction, and the cover panel 15 and the bottom flap 16 face each other with a space therebetween in the up-down direction. In the article storage container 10B, an article storage space 25 of a predetermined volume is defined, surrounded by the panels 11-15 and the bottom flap 16. The article storage container 10B stores predetermined articles (goods) in the article storage space 25, and is placed in a predetermined location such as an article display shelf or an article display case.

[0073] As shown in the developed plan view of FIG. 8, the glue flap 21 is located on the side of the back panel 12 and is connected to the back panel 12 via a side edge 26 (a fold line where the glue flap 21 is folded at a substantially right angle to the back panel 12) extending in the vertical direction. The fold-in flap 19 is located above the back panel 12 and is connected to the back panel 12 via an upper edge 27 (a fold line where the fold-in flap 19 is folded at a substantially right angle to the back panel 12) extending in the horizontal direction. The fold-in flap 19 can be rotated in the vertical direction around the upper edge 27 (the lower edge 27 of the fold-in flap 19). The first main bottom flap 16a is located below the back panel 12 and is connected to the back panel 12 via a lower edge 28 (a fold line where the first main bottom flap 16a is folded at a substantially right angle to the back panel 12) extending in the horizontal direction.

[0074] The back panel 11 is located to the side of the first side panel 13 and is connected to the first side panel 13 via a side edge 29 extending in the vertical direction (a fold line where the back panel 11 is folded at a substantially right angle to the first side panel 13). The first top flap 22 (first side flap) is located above the first side panel 13 and is connected to the first side panel 13 via a top edge 30 extending in the horizontal direction (a fold line where the first top flap 22 is folded at a substantially right angle to the first side panel 13). The first auxiliary bottom flap 16c is located below the first side panel 13 and is connected to the first side panel 13 via a bottom edge 31 extending in the horizontal direction (a fold line where the first auxiliary bottom flap 16c is folded at a substantially right angle to the first side panel 13).

[0075] The first side panel 13 is located to the side of the front panel 11 and is connected to the front panel 11 via a side edge 32 extending in the vertical direction (a fold line where the first side panel 13 is folded at a substantially right angle to the front panel 11). The lid panel 15 is located above the front panel 11 and is connected to the front panel 11 via a top edge 33 extending in the horizontal direction (a fold line where the lid panel 15 is folded at a substantially right angle to the front panel 11). The second main bottom flap 16b is located below the front panel 11 and is connected to the front panel 11 via a bottom edge 34 extending in the horizontal direction (a fold line where the second main bottom flap 16b is folded at a substantially right angle to the front panel 11). The insertion flap 20 is located above the lid panel 15 and is connected to the lid panel 15 via a top edge 35 extending laterally (a fold line along which the insertion flap 20 is folded at a substantially right angle to the lid panel 15). The insertion flap 20 is vertically rotatable about the top edge 35 (the bottom edge 35 of the insertion flap 20).

[0076] The front panel 11 is located to the side of the second side panel 14 and is connected to the second side panel 14 via a vertically extending side edge 36 (a fold line where the front panel 11 is folded at a substantially right angle to the second side panel 14). The second top flap 23 (second side flap) is located above the second side panel 14 and is connected to the second side panel 14 via a horizontally extending upper edge 37 (a fold line where the second top flap 23 is folded at a substantially right angle to the second side panel 14). The second auxiliary bottom flap 16d is located below the second side panel 14 and is connected to the second side panel 14 via a horizontally extending lower edge 38 (a fold line where the second auxiliary bottom flap 16d is folded at a substantially right angle to the second side panel 14).

[0077] The fold-in flap 19 has a first insertion slit 39 and a first engagement opening 40, a second engagement opening 41 and an engagement protrusion 42, a second insertion slit 43 and a third insertion slit 44. The fold-in flap 19 has a horizontal length dimension that is approximately the same as that of the lid panel 15 in the horizontal direction. The first insertion slit 39 is formed in the horizontal center of the lower edge 27 (upper edge 27) of the fold-in flap 19 and extends in the horizontal direction. The insertion flap 20 is inserted into the first insertion slit 39.

[0078] The first insertion opening 40 is formed at the lower edge 27 of the fold-in flap 19 between one edge 45 of the first insertion slit 39 and one side edge 46 of the fold-in flap 19. The insertion flap 20 is inserted into the first insertion opening 40. The first insertion opening 40 is formed of a first convex opening 84 that opens in an arc from one edge 45 of the first insertion slit 39 toward the upper side (upper edge) of the fold-in flap 19, and a first band-shaped opening 49 that is connected to one opening end 48 of the first convex opening 84 and opens in a band-like shape in the horizontal direction from the one opening end 48 toward one side edge 27 of the fold-in flap 19.

[0079] The first convex opening 84 of the folding flap 19 is formed by cutting the folding flap 19 along a convex first cut line 85 that forms an arc convexly upward (to the upper edge) from the lower edge 27 of the folding flap 19. The first band-shaped opening 49 of the folding flap 19 is formed by cutting the folding flap 19 along a first horizontal cut line 51 that extends straight in the horizontal direction from one opening end 48 of the first convex opening 84 and a first vertical cut line 52 that extends in the vertical direction from one edge of the first horizontal cut line 51.

[0080] The second insertion opening 41 is formed at the lower edge 27 of the fold-in flap 19 between the other edge 53 of the first insertion slit 39 and the other side edge 54 of the fold-in flap 19. The insertion flap 20 is inserted into the second insertion opening 41. The second insertion opening 41 is formed of a second convex opening 86 that opens in an arc from the other edge 53 of the first insertion slit 39 toward the upper side (upper edge) of the fold-in flap 19, and a second band-shaped opening 57 that is connected to the other opening end 56 of the second convex opening 86 and opens in a band-like shape in the horizontal direction from the other opening end 56 toward the other side edge 54 of the fold-in flap 19.

[0081] The second convex opening 86 of the folding flap 19 is formed by cutting the folding flap 19 along a convex second cut line 87 that forms an arc so as to be convex upward (to the upper edge) from the lower edge 27 of the folding flap 19. The second band-shaped opening 57 of the folding flap 19 is formed by cutting the folding flap 19 along a second horizontal cut line 59 that extends straight in the horizontal direction from the other opening end 56 of the second convex opening 86 and a second vertical cut line 60 that extends in the vertical direction from the other edge of the second horizontal cut line 59.

[0082] The engagement protrusion 42 is surrounded by the first insertion slit 39 and the inner edges of the first and second engagement openings 40, 41 (the inner edge of the convex first cut line 85 and the inner edge of the convex second cut line 87) and is formed in a long strip shape in the horizontal direction. The engagement protrusion 42 becomes a protrusion toward the front in the front-rear direction when the folding flap 19 is turned downward in the vertical direction and the folding flap 19 closes the top opening 17. The second insertion slit 43 is connected to one opening end of the first strip-shaped opening 49 and extends laterally from the one opening end toward one side edge 46 of the folding flap 19. The insertion flap 20 is inserted into the second insertion slit 43. The third insertion slit 44 is connected to the other opening end of the second strip-shaped opening 57 and extends laterally from the other opening end toward the other side edge 54 of the folding flap 19. The insertion flap 20 is inserted into the third insertion slit 44 .

[0083] The insertion flap 20 has a third engagement opening 61, a first connecting portion 88, a second connecting portion 89, a first notched opening 64, and a second notched opening 65. The lateral length of the insertion flap 20 is shorter than that of the lid panel 15. The third engagement opening 61 is formed in the center of the bottom edge 35 of the insertion flap 20 (the top edge 35 of the lid panel 15). The third engagement opening 61 is surrounded by a first vertical cut line 90 extending in the vertical direction from the inner end of the first connecting portion 64 toward the upper side (upper edge) of the insertion flap 20, a second vertical cut line 91 extending in the vertical direction from the inner end of the second connecting portion 89 toward the upper side (upper edge) of the insertion flap 20, and a horizontal cut line 92 extending horizontally between the upper ends of the first and second vertical cut lines 90, 91, and is shaped like a horizontal band that convex forward in the front-to-rear direction.

[0084] The first connecting portion 88 extends in a strip-like shape from the other edge of the third insertion opening 61 in the horizontal direction. The first connecting portion 88 is connected to the upper edge 35 of the lid panel 15. When the insertion flap 42 is inserted into the first insertion slit 39 and the first and second insertion openings 40, 41, the first connecting portion 88 is engaged into the first insertion opening 40 of the fold-in flap 19. The second connecting portion 89 extends in a strip-like shape from one edge of the third insertion opening 61 in the horizontal direction. The second connecting portion 89 is connected to the upper edge 35 of the lid panel 15. When the insertion flap 20 is inserted into the first insertion slit 39 and the first and second insertion openings 40, 41, the second connecting portion 89 is engaged into the second insertion opening 41 of the fold-in flap 19.

[0085] The first cutout opening 64 is cut laterally inward from the other side edge 68 of the insertion flap 20 toward the first connecting portion 88, and opens in a band-like shape in the horizontal direction. The second cutout opening 65 is cut laterally inward from one side edge 71 of the insertion flap 20 toward the second connecting portion 89, and opens in a band-like shape in the horizontal direction. The first cutout opening 64 is created by cutting out the insertion flap 20 along a fifth vertical cut line 80 extending vertically from the other end edge of the first connecting portion 64 and a fifth horizontal cut line 81 extending straight in the horizontal direction from the upper end of the fifth vertical cut line 80. The second cutout opening 65 is created by cutting the insertion flap 20 along a sixth vertical cut line 82 extending vertically from one end edge of the second connecting portion 65 and a sixth horizontal cut line 83 extending horizontally in a straight line from the upper end of the sixth vertical cut line 82.

[0086] The lid panel 15 has a perforation line 93, a tear-off area 94, and a finger insertion opening 95. The perforation line 93 connects the other edge of the first connecting portion 64 and one edge of the second connecting portion 65, and forms an arc that is convex downward from the upper edge 35 of the lid panel 15 in the vertical direction. The perforation line 93 is formed in a semicircle from the upper edge 35 of the lid panel 15 downward (lower edge 33) between the other edge of the first connecting portion 64 and one edge of the second connecting portion 65, and surrounds the tear-off area 94. The tear-off area 94 is a semicircular area surrounded by the perforation line 93, and can be separated from the lid panel 15 at the perforation line 93. The finger insertion opening 95 is a semicircular opening that opens downward in the vertical direction from the perforation line 93 of the tear-off area 94, is located at the lower center of the tear-off area 94, and forms an arc that protrudes from the perforation line 93 toward the lower side (lower edge 33) of the cover panel 15. A finger can be inserted into the finger insertion opening 95 so as to be removably inserted.

[0087] Fig. 11 is a front perspective view of the container 10B with the top opening 17 closed by the cover panel 15, and Fig. 12 is a front perspective view of the container 10B with the cover panel 15 rotated upward in the vertical direction. An example of a procedure for assembling the container box 10B from the box blank (developed plan view) shown in Fig. 8 is as follows. The glue flap 21 is folded (folded) at the side edge 26 (the fold line for folding the glue flap 21 at a substantially right angle to the back panel 12) so that the glue flap 21 is substantially perpendicular to the back panel 12, and the back panel 12 is folded (folded) at the side edge 29 (the fold line for folding the back panel 12 at a substantially right angle to the first side panel 13) so that the back panel 12 is substantially perpendicular to the first side panel 13.

[0088] The first side panel 13 is folded (bent) at a side edge 32 (a fold line that folds the first side panel 13 at approximately a right angle to the front panel 11) so that the first side panel 13 is approximately perpendicular to the front panel 11, and the front panel 11 is folded (bent) at a side edge 36 (a fold line that folds the front panel 11 at approximately a right angle to the second side panel 14) so ​​that the front panel 11 is approximately perpendicular to the second side panel 14.

[0089] The first main bottom flap 16a is folded (bent) at the lower edge 28 (a fold line that folds the first main bottom flap 16a at approximately a right angle to the back panel 12) so that the first main bottom flap 16a is approximately perpendicular to the back panel 12, and the first auxiliary bottom flap 16c is folded (bent) at the lower edge 31 (a fold line that folds the first auxiliary bottom flap 16c at approximately a right angle to the first side panel 13) so that the first auxiliary bottom flap 16c is approximately perpendicular to the first side panel 13.

[0090] The second main bottom flap 16b is folded (bent) at the lower edge 34 (a fold line that folds the second main bottom flap 16b at approximately a right angle to the front panel 11) so that the second main bottom flap 16b is approximately perpendicular to the front panel 11, and the second auxiliary bottom flap 16d is folded (bent) at the lower edge 38 (a fold line that folds the second auxiliary bottom flap 16d at approximately a right angle to the second side panel 14) so ​​that the second auxiliary bottom flap 16d is approximately perpendicular to the second side panel 14.

[0091] After folding the glue flap 21, the back panel 12, the first side panel 13, the front panel 11, the first main bottom flap 16a, the first auxiliary bottom flap 16c, the second main bottom flap 16b, and the second auxiliary bottom flap 16d in order, the outer surface of the glue flap 21 is overlapped with the inner surface of the second side panel 14, and the outer surface of the glue flap 21 is joined to the inner surface of the second side panel 14 by glue or adhesive. The inner surface of the glue flap portion 24 of the first main bottom flap 16a is overlapped with the outer surface of the first auxiliary bottom flap 16c, and the inner surface of the glue flap portion 24 of the first main bottom flap 16a is joined to the outer surface of the first auxiliary bottom flap 16c by glue or adhesive. The inner surface of the second main bottom flap 16b's glue tab 24 is overlapped with the outer surface of the second auxiliary bottom flap 16d, and the inner surface of the second main bottom flap 16b's glue tab 24 is joined to the outer surface of the second auxiliary bottom flap 16d by glue or adhesive. The bottom opening 18 is closed by the bottom flap 16. A specified item is stored in the item storage space 25 from the top opening 17.

[0092] After storing items in the item storage space 25, the first top flap 22 is folded (bent) at the upper edge 30 (a fold line that folds the first top flap 22 at approximately a right angle to the first side panel 13) so that the first top flap 22 is approximately perpendicular to the first side panel 13, and the second top flap 23 is folded (bent) at the upper edge 37 (a fold line that folds the second top flap 23 at approximately a right angle to the second side panel 14) so ​​that the second top flap 23 is approximately perpendicular to the second side panel 14.

[0093] The fold-in flap 19 is folded (bent) toward the front panel 11 at the upper edge 27 (the fold line along which the fold-in flap 19 is bent at a substantially right angle to the rear panel 11) so that the fold-in flap 19 is substantially perpendicular to the rear panel 11. The inner surface of the fold-in flap 19 overlaps the outer surfaces of the first and second top flaps 22, 23. When the fold-in flap 19 is folded toward the front panel 11, the horizontally long U-shaped engagement protrusion 42 protrudes forward in the front-rear direction. Furthermore, the first engagement opening 40 (first convex opening 84, first band-shaped opening 49) opens in the vertical direction, and the second engagement opening 41 (second convex opening 85, second band-shaped opening 57) opens in the vertical direction.

[0094] Next, the insertion flap 15 is folded (bent) downward in the vertical direction at the upper edge 35 (a folding line along which the insertion flap 20 is folded at a substantially right angle relative to the lid panel 15) so that the insertion flap 20 is substantially perpendicular to the lid panel 15. When the insertion flap 20 is folded relative to the lid panel 15, the third engagement opening 61 and the first and second cutout openings 64, 65 open in the front-to-rear direction, and the first and second connecting portions 88, 89 extend in the vertical direction.

[0095] After folding the insertion flap 20 relative to the lid panel 15, the lid panel 15 is folded (bent) at the upper edge 33 (the folding line along which the lid panel 15 is folded at a substantially right angle relative to the front panel 11) so that the lid panel 15 is substantially perpendicular to the front panel 11, and the lid panel 15 is rotated vertically downward toward the rear panel 12, while the insertion flap 20 is gradually inserted into the first insertion slit 39 and the first and second engagement openings 40, 41 so that the insertion flap 20 is positioned inside the rear panel 12. When the insertion flap 20 is inserted into the first insertion slit 39 and the first and second engagement openings 40, 41, the outer surface of the insertion flap 20 (the upper edge of the insertion flap 20) slides against the inner surface of the rear panel 12, and the insertion flap 20 gradually enters the item storage space 25.

[0096] When the entire insertion flap 20 enters the item storage space 25 (first insertion slit 39, first and second engagement openings 40, 41), the engagement protrusion 42 extending forward in the fore-and-aft direction of the fold-in flap 19 is positioned at the third engagement opening 61 of the insertion flap 20, and the engagement protrusion 42 engages with the third engagement opening 61 of the insertion flap 20 in a manner that is difficult to release. Furthermore, the first connecting portion 88 extending in the vertical direction of the insertion flap 20 engages with difficulty in being released into the first engagement opening 40 opening in the vertical direction of the folding flap 19, and the second connecting portion 89 extending in the vertical direction of the insertion flap 20 engages with difficulty in being released into the second engagement opening 41 opening in the vertical direction of the folding flap 19, the opening edge of the first notch opening 64 of the insertion flap 20 (the opening edge defining the first notch opening 64 of the insertion flap 20) engages with difficulty in being released into the slit edge of the second insertion slit 43 of the folding flap 19, and the opening edge of the second notch opening 65 of the insertion flap 20 (the opening edge defining the second notch opening 65 of the insertion flap 20) engages with difficulty in being released into the slit edge of the third insertion slit 44 of the folding flap 19.

[0097] When the entire insertion flap 20 is inserted into the article storage space 25 (first insertion slit 39, first and second engagement openings 40, 41), the state shown in FIG. 11 is reached, in which the inner surface of the lid panel 15 abuts against the outer surface of the fold-in flap 19, and the top opening 17 of the article storage container 10B is closed by the first and second top flaps 22, 23, the fold-in flap 19, and the lid panel 15. The article storage container 10B is placed in a predetermined location on an article display shelf, an article display case, or the like in the state shown in FIG. 11. After the insertion flap 20 is inserted into the first insertion slit 39 and the first and second engagement openings 40, 41, it becomes difficult to release the engagement (engagement) of the insertion flap 20 with the first insertion slit 39 and the first and second engagement openings 40, 41.

[0098] In the article storage container 10B, the insertion flap 20 is inserted into the article storage space 25 (the first insertion slit 39, the first and second engagement openings 40, 41), the engagement protrusion 42 of the fold-in flap 19 engages with the third engagement opening 61 of the insertion flap 20, the first and second connecting portions 88, 89 of the insertion flap 20 engage with the first and second engagement openings 40, 41 of the fold-in flap 19, and the first and second cutout openings 64, 65 of the insertion flap 20 engage with the second and By engaging the third insertion slits 43, 44, not only can the top opening 17 be closed, but since it is difficult to disengage the fold-in flap 19 and the insertion flap 20, the top opening 17 of the item storage container 10B cannot be easily opened, thereby preventing the items stored in the item storage space 25 from being exposed or inadvertently removed from the item storage container 10B, and preventing the items from being removed from the item storage space 25.

[0099] In the article storage container 10B in which the folding flap 19 and the insertion flap 20 are engaged (engaged), when an attempt is made to rotate only the cover panel 15 upward in the vertical direction, the engagement protrusion 42 of the folding flap 19 gets caught on the first and second vertical cut lines 90, 91 and the horizontal cut line 92 surrounding the third engagement opening 61 of the insertion flap 20, the first connecting portion 88 of the insertion flap 20 gets caught on the opening edges of the first convex opening 84 and the first band-shaped opening 49 of the folding flap 19, and the second connecting portion 89 of the insertion flap 20 gets caught on the opening edges of the first convex opening 84 and the first band-shaped opening 49 of the folding flap 19. 89 gets caught on the opening edges of the first convex opening 86 and the second strip-shaped opening 57 of the folding flap 19, the opening edge of the first notched opening 64 of the insertion flap 20 gets caught on the slit edge of the second insertion slit 43 of the folding flap 19, and the opening edge of the second notched opening 65 of the insertion flap 20 gets caught on the slit edge of the third insertion slit 43 of the folding flap 9, preventing the lid panel 15 from pivoting upward or downward and making it impossible to pivot (open) the lid panel 15 (top opening 17).

[0100] The procedure for opening the top opening 17 of the article storage container 10B by rotating the lid panel 15 upward and downward is as follows. With the lid panel 15 covering the top opening 17, a finger is inserted into the finger insertion opening 95, and the tear-off area 94 is rotated upward in the vertical direction with the finger. When the tear-off area 94 is rotated upward in the vertical direction with the finger inserted into the finger insertion opening 95, the rotating force acts on the tear-off area 94. When the rotating force acting on the tear-off area 94 is strong enough to break the perforation line 93 surrounding the tear-off area 94, the tear-off area 94 is separated (cut) from the lid panel 15 at the perforation line 93, and the insertion flap 20 is separated (cut) from the lid panel 15, and the remaining area 96 of the lid panel 20 excluding the tear-off area 94 is rotated upward in the vertical direction (see FIG. 12). After only the remaining area 96 is pivoted upward in the vertical direction, the fold-in flap 19 is pivoted upward in the vertical direction, and the first and second top flaps 22, 23 are pivoted upward in the vertical direction, thereby opening the top opening 17.

[0101] In the item storage container 10B, when the separation area 94 is rotated upward in the vertical direction from the engaged state between the fold-in flap 19 and the insertion flap 20 to open the top opening 17, the separation area 94 is separated from the lid panel 15 at the perforation line 93, and the insertion flap 20 is separated from the lid panel 15, so that the insertion flap 20 remains in the item storage space 25 of the item storage container 10B, and the top opening 17 cannot be blocked again by the lid panel 15.

[0102] When the insertion flap 20 is inserted into the article storage space 25 (first insertion slit 39, first and second engagement openings 40, 41) of the article storage container 10B, the engagement protrusion 42 of the fold-in flap 19 engages with the third engagement opening 61 of the insertion flap 20, the first and second connecting portions 88, 89 of the insertion flap 20 engage with the first and second engagement openings 40, 41 of the fold-in flap 19, and the first and second cutout openings 64, 65 of the insertion flap 20 engage with the second and third insertion slits 43, 44 of the fold-in flap 19, so that the lid panel 15 closes the top opening 17, and a finger is inserted into the finger insertion opening 95 to lift up the separation area 94 of the lid panel 15. When the container 10B is rotated downward and upward, the tear-off area 94 is separated from the lid panel 15 at the perforation line 93, the insertion flap 20 is separated from the lid panel 15, and the remaining area 96 of the lid panel 15 excluding the tear-off area 94 rotates upward in the vertical direction to open the top opening 17. Therefore, when the top opening 17 is opened from a state in which the top opening 17 is blocked by the lid panel 15, the insertion flap 20 remains in the first insertion slit 39 and the first and second engagement openings 40, 41, and only the remaining area 96 of the lid panel 15 from which the insertion flap 20 and the tear-off area 94 have been separated rotates upward in the vertical direction. Therefore, even if the container 10B is opened illegally, the tear-off area 94 and the insertion flap 20 of the lid panel 15 are separated from the lid panel 15, and the tear-off area 94 and the insertion flap 20 are lost from the lid panel 15, leaving a trace (evidence) of the opening. The container 10B cannot be returned to a state that appears unopened, and by looking at the container 10B after it has been opened, it is easily known that it has been opened, providing excellent tamper prevention effects and enabling the quality of product management and quality control to be improved. [Explanation of symbols]

[0103] 10A Item storage container 10B Item storage container 11 Front Panel 12 Rear Panel 13 First side panel 14 Second Side Panel 15 Lid Panel 16 Bottom flap 16a First main bottom flap 16b Second main bottom flap 16c 1st auxiliary bottom flap 16d Second auxiliary bottom flap 17 Top opening 18 Bottom opening 19 Fold-in flap 20 Insertion flap 21 Glue flap 22 First apical flap 23 Second apical flap 24 Glue section 25 Storage space 26 Side edge 27 Top edge 28 Bottom edge 29 Side edge 30 Top edge 31 Bottom edge 32 Side edge 33 Top edge 34 Bottom edge 35 Top edge 36 Side edge 37 Top edge 38 Bottom edge 39 First insertion slit 40 First Entrance Gate 41 Second Entrance Gate 42 Entrance and exit section 43 Second insertion slit 44 Third insertion slit 45 One edge 46 One side edge 47 First semicircular opening 48 One open end 49 First Belt Opening 50 Arc-shaped first cutting line 51 First cross cutting line 52 First vertical cut line 53 The other edge 54 Other side edge 55 Second semicircular opening 56 The other open end 57 Second Belt Opening 58 Arc-shaped second cut line 59 Second horizontal cutting line 60 Second vertical cut line 61 Third Entrance 62 First Section Joint Department 63 Second Section Joint Department 64 1st notch opening 65 2nd notch opening 66 Third semicircular opening 67 The other open end 68 Other side edge 69 Third Belt Opening 70 One open end 71 One side edge 72 4th Band Opening 73 Arc-shaped third cut line 74 Third cross cutting line 75 Third vertical cut line 76 4th Cross Cut Line 77 4th vertical cut line 78 First perforation line 79 Second perforation line 80 5th vertical cut line 81 5th Cross Cut Line 82 6th vertical cut line 83 6th Crosscut Line 84 1st convex opening 85 Convex first cutting line 86 Second convex opening 87 Convex second cutting line 88 1st connection part 89 2nd connection part 90 First vertical cut line 91 Second vertical cut line 92 Crosscut line 93 Perforation 94 Separation Area 95 Finger insertion opening 96 Remaining Area

Claims

1. A hexahedral container for storing articles has front and back panels of a specified area which face each other in a front-rear direction and are spaced apart from each other, first and second side panels of a specified area which face each other in a lateral direction and are spaced apart from each other, and a lid panel which closes a top opening and a bottom panel which closes a bottom opening which face each other in a vertical direction and are spaced apart from each other, The article storage container includes a folding flap connected to an upper edge of either the front panel or the rear panel and capable of pivoting in the vertical direction about a lower edge, and an insertion flap connected to an upper edge of the lid panel and capable of pivoting in the vertical direction about a lower edge, the folding flap has a first insertion slit formed in the center of its lower edge, extending laterally, into which the insertion flap can be inserted, a first engagement opening formed between one end edge of the first insertion slit and one side edge of the folding flap, a second engagement opening formed between the other end edge of the first insertion slit and the other side edge of the folding flap, and an engagement protrusion surrounded by the first insertion slit and inner edges of the first and second engagement openings, which protrudes forward in the front-rear direction when the folding flap is pivoted downward in the up-down direction, the insertion flap has a third insertion opening formed at the center of its lower edge, a first insertion portion detachably connected to the upper edge of the cover panel via a first perforation line extending laterally from the other edge of the third insertion opening toward the other side edge of the insertion flap, and a second insertion portion detachably connected to the upper edge of the cover panel via a second perforation line extending laterally from one edge of the third insertion opening toward one side edge of the insertion flap, the first engagement portion of the insertion flap engages with the third engagement opening of the insertion flap, the first engagement portion of the insertion flap engages with the first engagement opening of the folding flap and the second engagement portion of the insertion flap engages with the second engagement opening of the folding flap, so that the lid panel blocks the top opening; and when the lid panel is rotated upward in the vertical direction from the state in which the lid panel blocks the top opening to open the top opening, the first and second engagement portions are separated from the insertion flap at the first and second perforation lines, and the lid panel and the insertion flap are separated.

2. The first insertion opening of the folding flap is formed of a first semicircular opening that opens in a semicircular shape from one end edge of the first insertion slit toward the upper part of the folding flap, and a first band-shaped opening that opens in a band-like shape in the horizontal direction from one opening end of the first semicircular opening toward one side edge of the folding flap, and the second insertion opening of the folding flap is formed of a second semicircular opening that opens in a semicircular shape from the other end edge of the first insertion slit toward the upper part of the folding flap, and a second band-shaped opening that opens in a band-like shape in the horizontal direction from one opening end of the first semicircular opening toward the upper part of the folding flap. The third insertion opening of the insertion flap is formed of a third semicircular opening located at the center thereof and opening in a semicircular shape toward the other side edge of the insertion flap, a third semicircular opening opening from the other opening end of the third semicircular opening toward the other side edge of the insertion flap, and a fourth semicircular opening opening from one opening end of the third semicircular opening toward one side edge of the insertion flap. and an opening, and when the lid panel and the insertion flap are rotated downward in the vertical direction to insert the insertion flap into the first insertion slit and the first and second engagement openings, one lateral corner portion of the engagement protrusion of the fold flap engages with the third band-shaped opening of the insertion flap in a manner that makes it difficult to release it, and the other lateral corner portion of the engagement protrusion of the fold flap engages with the fourth band-shaped opening of the insertion flap in a manner that makes it difficult to release it, and the lid panel closes the top opening. An article storage container as described in claim 1, wherein when the top opening is opened from the closed state to release the engagement of the engagement protrusion with the third engagement opening, one lateral corner portion of the engagement protrusion of the fold-in flap catches on the opening edge of the third band-shaped opening of the insertion flap, and the other lateral corner portion of the engagement protrusion of the fold-in flap catches on the opening edge of the fourth band-shaped opening of the insertion flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

3. 3. The item storage container of claim 2, wherein the insertion flap has a first notched opening cut laterally inward from its other side edge toward the first engagement portion, and a second notched opening cut laterally inward from one side edge toward the second engagement portion, and when the top opening is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, the opening edge of the first notched opening of the insertion flap hooks onto the opening edge of the first strip-shaped opening of the fold-in flap, the opening edge of the second notched opening of the insertion flap hooks onto the opening edge of the second strip-shaped opening of the fold-in flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

4. 4. The container for storing items as described in claim 3, wherein the folding flap has a second insertion slit extending laterally from one opening end of the first strip-shaped opening toward one side edge of the folding flap, and a third insertion slit extending laterally from the other opening end of the second strip-shaped opening toward the other side edge of the folding flap, and when the top opening is opened from a state in which the lid panel covers the top opening to release the engagement of the engagement protrusion with the third engagement opening, the opening edge of the first notched opening of the insertion flap catches on the slit edge of the second insertion slit of the folding flap, the opening edge of the second notched opening of the insertion flap catches on the slit edge of the third insertion slit of the folding flap, and the first and second engagement portions are separated from the insertion flap at the first and second perforation lines.

5. A hexahedral container for storing articles has front and back panels of a specified area which face each other in a front-rear direction and are spaced apart from each other, first and second side panels of a specified area which face each other in a lateral direction and are spaced apart from each other, and a lid panel which closes a top opening and a bottom panel which closes a bottom opening which face each other in a vertical direction and are spaced apart from each other, The article storage container includes a folding flap connected to an upper edge of either the front panel or the rear panel and capable of pivoting in the vertical direction about a lower edge, and an insertion flap connected to an upper edge of the lid panel and capable of pivoting in the vertical direction about a lower edge, the folding flap has a first insertion slit formed in the center of its lower edge, extending laterally, into which the insertion flap can be inserted, a first engagement opening formed between one end edge of the first insertion slit and one side edge of the folding flap, a second engagement opening formed between the other end edge of the first insertion slit and the other side edge of the folding flap, and an engagement protrusion surrounded by the first insertion slit and inner edges of the first and second engagement openings, which protrudes forward in the front-rear direction when the folding flap is pivoted downward in the up-down direction, the insertion flap has a third engagement opening formed in the center of its lower edge and extending laterally into which the engagement protrusion of the fold flap engages when the insertion flap is pivoted downward in the vertical direction; a first connecting portion located between the other edge of the third engagement opening and the other side edge of the insertion flap, extending laterally into the first engagement opening; and a second connecting portion located between one edge of the third engagement opening and one side edge of the insertion flap, extending laterally into the second engagement opening, the cover panel has a perforation line that connects the other end edge of the first connecting portion and one end edge of the second connecting portion and that protrudes downward in the vertical direction from the upper end edge of the cover panel, a separation area that is surrounded by the perforation line and can be separated from the cover panel at the perforation line, and a finger insertion opening that opens downward in the vertical direction from the perforation line of the separation area, The article storage container is characterized in that when the lid panel and the insertion flap are rotated downward in the vertical direction and the insertion flap is inserted into the first insertion slit and the first and second engagement openings, the engagement protrusion engages into the first engagement opening so that the lid panel blocks the top opening, and when the tear-off area is rotated upward in the vertical direction from the state in which the lid panel blocks the top opening to a state in which a finger is inserted into the finger insertion opening, the tear-off area is separated from the lid panel along the perforation line and the insertion flap is separated from the lid panel, and the remaining area of ​​the lid panel excluding the tear-off area is rotated upward in the vertical direction to open the top opening.

6. 6. An article storage container as described in claim 5, wherein the perforation line surrounding the tear-off area forms an arc that convexly extends downward in the vertical direction from the upper edge of the lid panel between the other edge of the first connecting portion and one edge of the second connecting portion, and the finger insertion opening forms an arc that convexly extends downward in the vertical direction from the lower center of the tear-off area.

7. The first engagement opening of the folding flap is formed of a first convex opening that opens convexly from one end edge of the first insertion slit toward the upper end of the folding flap, and a first band-shaped opening that opens in a band-like manner in the horizontal direction from one opening end of the first convex opening toward one side edge of the folding flap, the second engagement opening of the folding flap is formed of a second convex opening that opens in a convex manner from the other end edge of the first insertion slit toward the upper end of the folding flap, and a second band-shaped opening that opens in a band-like manner in the horizontal direction from the other opening end of the second convex opening toward the other side edge of the folding flap, and the third engagement opening of the insertion flap is formed of a first vertical cut line that extends in the vertical direction from an inner end of the first connecting portion toward an upper edge of the insertion flap, a second vertical cut line that extends in the vertical direction from an inner end of the second connecting portion toward an upper edge of the insertion flap, and a first and second vertical cut lines that extend in the vertical direction from an inner end of the second connecting portion toward an upper edge of the insertion flap.

7. The container for storing articles according to claim 6, wherein the container is shaped like a horizontal strip and is surrounded by horizontal cut lines extending horizontally between vertical cut lines and is convex forward in the front-to-rear direction, and when the lid panel and the insertion flap are pivoted downward in the vertical direction to insert the insertion flap into the first insertion slit and the first and second engagement openings, the engagement protrusion of the fold flap engages with the third engagement opening of the insertion flap shaped like a horizontal strip in a difficult-to-release manner, so that the lid panel blocks the top opening, and when the lid panel is pivoted upward in the vertical direction from a state in which the lid panel blocks the top opening and a finger is inserted into the finger insertion opening, the engagement protrusion of the fold flap gets caught on the horizontal cut lines surrounding the third engagement opening of the insertion flap, so that the separation area is separated from the lid panel and the insertion flap is separated from the lid panel.

8. 8. The article storage container as described in claim 7, wherein the insertion flap has a first notched opening cut laterally inward from its other side edge toward the first engagement portion, and a second notched opening cut laterally inward from one side edge toward the second engagement portion, and when the tear-off area is rotated upward in the vertical direction with a finger inserted into the finger insertion opening from a state in which the lid panel covers the top opening, the opening edge of the first notched opening of the insertion flap hooks onto the opening edge of the first band-shaped opening of the fold-in flap, and the opening edge of the second notched opening of the insertion flap hooks onto the opening edge of the second band-shaped opening of the fold-in flap, so that the tear-off area is separated from the lid panel and the insertion flap is separated from the lid panel.

9. 9. The container for storing items as described in claim 8, wherein the folding flap has a second insertion slit extending laterally from one opening end of the first strip-shaped opening toward one side edge of the folding flap, and a third insertion slit extending laterally from the other opening end of the second strip-shaped opening toward the other side edge of the folding flap, and when the tear-off area is rotated upward in the vertical direction with the lid panel blocking the top opening and a finger inserted into the finger insertion opening, the opening edge of the first notched opening of the insertion flap catches on the slit edge of the second insertion slit of the folding flap, and the opening edge of the second notched opening of the insertion flap catches on the slit edge of the third insertion slit of the folding flap, so that the tear-off area is separated from the lid panel and the insertion flap is separated from the lid panel.

Images