JP3188857U - Packaging box - Google Patents

Abstract

Provided is a packaging box in which a side surface of the packaging box is formed by a combination of flaps, and even when a force is applied in the vertical direction of the packaging box, the packaging box is difficult to be released.
A top surface portion, a bottom surface portion, a side wall portion and a side wall portion, an inner flap covering at least a part of the opening, an outer flap, a outer flap, a outer flap, and an outer flap. Provided with an outer flap 7F that covers at least a part of the outer flap 7F, and is provided with an insertion portion 12 and a locking portion 13 provided at a corner of the outer flap 7F, an outer flap 6R and an outer flap 6L, and the insertion portion 12 is inserted from the outside. It is characterized by having an insertion port to be formed, a locking portion 11 provided so as to be locked and detachable with the locking portion 13, and at least one broken line 20a provided on the outer side flap 7F.
[Selection] Figure 1

Description

  The present invention relates to a packaging box.

  For example, a substantially rectangular packaging box formed of a sheet member such as a cardboard sheet material is mainly composed of four side walls and a flap that extends from each side wall and is combined to form a lid of the packaging box. It has been known. A packaging box is also known in which an insertion port is provided at the corner of the tip of one set of flaps and an insertion portion is provided in the other set of flaps (see, for example, Patent Document 1). When assembling such a packaging box, after folding a set of flaps having an insertion port so as to cover the opening of the packaging box, the other set of flaps is overlaid on the previously folded flap. Bend it. And by inserting the insertion part provided in one set of flaps into the insertion opening provided in the pair of folded flaps, the insertion opening and the insertion part are locked, and each flap is fixed. As a result, the lid of the packaging box is formed. In such a packaging box, since the packaging box is formed without using a fixing member such as a tape, the operation of forming the packaging box can be simplified.

  When packaging products (contents) made of soft materials such as leafy vegetables using such a packaging box, the contents stored on the lower side are pressed by the weight of the contents stored on the upper side, The contents could be damaged. In order to prevent such a situation, the contents are sequentially stored in the packaging box, and after the lid is closed, the packaging box may be rotated so that the lid becomes the side of the packaging box. This is because the contents do not fold in the vertical direction, and other contents can be prevented from being pressed by the weight of the contents.

JP 2005-298029 A

  However, in actual use of the packaging box, a plurality of the packaging boxes may be stacked for transportation and storage. At this time, when the packaging box described in Patent Document 1 is used so that the lid portion becomes the side surface as described above, the flaps constituting the lid portion of the packaging box are locked. There was a problem that the cover part would come off and open. This is because when the force in the vertical direction is applied to the packaging box, the flap having the insertion portion is deformed so as to bulge outward, and the locking between the insertion portion and the insertion port is released.

  The present invention has been made to solve the above-described problems, and is a case where force is applied in the vertical direction of the packaging box in a packaging box in which the side surface of the packaging box is formed by a combination of flaps. However, an object of the present invention is to provide a packaging box in which the flaps are not easily disengaged. It is another object of the present invention to provide a packaging box that can be easily assembled without using a fixing member or the like and can be easily unpacked.

In order to achieve the above object, the present invention provides the following means.
The packaging box of the present invention comprises a top surface part that forms the top surface of the packaging box, a bottom surface part that forms the bottom surface, the top surface part and the bottom surface part, and constitutes a cylindrical body part together with the top surface part and the bottom surface part. A pair of side walls, a first flap extending from the side of the top surface adjacent to at least one opening of the cylindrical body toward the bottom surface, and covering at least a part of the opening A pair of second flaps extending from the side of the one side wall adjacent to the opening toward the other side wall facing the opening and covering at least a part of the opening; and the opening A third flap that extends from the side of the bottom surface adjacent to the top surface toward the top surface and covers at least a part of the second flap, and is provided at a corner of the third flap Portion and a first engagement provided in the insertion portion And an insertion port provided at a position corresponding to the insertion portion of the second flap, the insertion portion being inserted from the outside, a side of the insertion port, the first locking portion, A second locking portion provided so as to be able to be locked and disengaged, and at least one fold line extending from the side of the tip of the third flap toward the side where the third flap and the bottom surface portion are adjacent to each other. It is characterized by having.

  In the packaging box having such a feature, the packaging box can be assembled by a simple operation of simply inserting the insertion portion into the insertion slot. Further, the insertion portion and the insertion port are respectively provided with a first locking portion and a second locking portion, and when the insertion portion is pulled out as it is, the first locking portion and the second locking portion are provided. Since the part abuts, the insertion part inserted into the insertion port is difficult to come off (hereinafter, the state where the first engagement part and the second engagement part are in contact with each other, and the insertion part The state in which the second locking portion comes into contact with the first locking portion when pulling out is described as the first locking portion and the second locking portion being locked.) In addition, since the locking does not use a fixing member or the like, the locking can be released by shifting at least one locking portion inward or outward (hereinafter, such locking). Is described as being locked so that it can be locked and detached.) Therefore, the third flap is fixed to the second flap and can be easily removed.

  Furthermore, since the third flap is provided with a broken line, even if a force is applied to the third flap from the top surface to the bottom surface due to a load applied to the top surface of the packaging box, The force is distributed by the broken line. In other words, a part of the vertical force applied to the packaging box is also directed in the direction of bending the third flap along the fold line, and the first locking portion and the second locking portion. Can prevent the third flap from being easily separated.

  In the above-mentioned device, a wrapping box formed from a corrugated sheet material having a shin formed in a substantially S shape with a continuous cross section and a liner sandwiching the shin, and the ridge line of the shin is The corrugated sheet material is disposed so as to extend in a direction substantially orthogonal to the upper surface portion and the bottom surface portion at least in the side wall portion and the second flap, and in the third flap, The corrugated sheet material is preferably arranged such that a ridge line of the shin extends in a direction substantially parallel to the upper surface portion and the bottom surface portion.

  The corrugated cardboard material is composed of a surface material (liner) that forms the front surface and the back surface of the corrugated sheet material, and an intermediate slab that is disposed between the surface material and has a substantially S-shaped wave shape with a continuous cross section. From this structure, in general, when a force is applied to the end of the corrugated cardboard sheet in a direction parallel to the surface of the corrugated cardboard sheet, the force against the direction in which the ridgeline of the center shin extends (the width direction of the corrugated cardboard sheet) It has a characteristic that it is strong (not easily deformed) and weak (easy to deform) in a direction (flow direction of the corrugated cardboard sheet material) orthogonal to the direction in which the ridgeline of the middle shin extends.

  Therefore, when the corrugated sheet material is arranged in such a manner that the width direction of the corrugated sheet material is aligned with the direction of the force applied from the outside, a packaging box having increased resistance to the force in the direction can be obtained. However, when the packaging box is formed from a single cardboard sheet material in this way, the width direction of the cardboard sheet material constituting the third flap is the third flap left-right direction. For this reason, when a force is applied in the vertical direction of the packaging box, a force is applied in the flow direction of the cardboard sheet material in the third flap, and the third flap is easily deformed. However, by providing a broken line on the third flap, the vertical force is dispersed, and the deformation of the third flap that prevents the first locking portion and the second locking portion from coming off is prevented. Yes.

  In the above device, the insertion portion provided at the corner of the first flap, the first locking portion provided at the insertion portion, and the position corresponding to the insertion portion of the second flap. And an insertion port into which the insertion portion is inserted from the outside, and a second locking portion which is a side of the insertion port and is provided so as to be able to be locked and detached from the first locking portion. It is preferable to be characterized by this.

  By doing in this way, since the 1st flap extended from an upper surface part is also latched and detachably latched by the 2nd flap, the fixation of the flap used as the cover part of a packaging box is made more reliable. It becomes possible.

  According to the packaging box of the present invention, it is not necessary to use a fixing member such as a tape for assembling the packaging box, so that the assembly can be performed with an easy operation. Moreover, since the flap which becomes a lid part of a packaging box is latched and detachably latched, it is prevented that a cover part opens naturally, and it can unpack easily. Furthermore, even if a force is applied in a direction from the top surface portion to the bottom surface portion of the packaging box by the broken line provided on the third flap, a part of the force is bent in the third flap along the broken line. The third flap is prevented from being deformed because it is also used and dispersed. For this reason, the third flap is deformed, and the second flap and the third flap are prevented from being unlocked.

It is a perspective view explaining the structure of the packaging box which concerns on 1st embodiment of this invention. It is an expanded view explaining the structure of the packaging box which concerns on 1st embodiment of this invention. It is the perspective view explaining the assembly method of the packaging box which concerns on 1st embodiment of this invention, and the elements on larger scale explaining the latching of a flap. It is a perspective view explaining the structure of the packaging box which concerns on 2nd embodiment of this invention. It is an expanded view explaining the structure of the packaging box which concerns on 2nd embodiment of this invention.

[First embodiment]
Hereinafter, a packaging box according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the present embodiment, the case will be described where the present packaging box is applied to a packaging box for leafy vegetables such as mizuna. The contents of the packaging box may be various things such as other vegetables, foodstuffs, clothing and industrial supplies, and are not particularly limited thereto.

  A packaging box 1 according to a first embodiment of the present invention is a hexahedral cubic container and is made of a corrugated cardboard material. The packaging box 1 includes an upper surface portion 2, a bottom surface portion 4, a side wall portion 3 and a side wall portion 5 constituting a set of side walls facing each other, and a side wall A and a side wall B constituting another set of side walls facing each other. It is mainly composed. A portion surrounded by each surface is a storage space D of the packaging box 1. Note that the side wall A and the side wall B are configured by combining a plurality of flaps so as to be able to be engaged and disengaged, and form a lid that can be freely opened and closed.

  In the present embodiment, the corrugated cardboard sheet material has a width direction (a direction in which the ridgeline of the central shin line extends) is a vertical direction of each side wall of the packaging box 1 (a direction from the top surface portion 2 toward the bottom surface portion 4). Sheet material is arranged. In general, a corrugated cardboard sheet material is composed of an inner core formed in a substantially S-shape having a continuous cross section and a liner sandwiching the inner core. When a force parallel to the flat surface is applied to the end of the cardboard sheet material, it is strong against the force in the width direction of the cardboard sheet material (hard to bend), and the flow direction of the cardboard sheet material (the ridgeline of the center It has a characteristic of being weak (easy to bend) in the direction orthogonal to the extending direction. For this reason, the intensity | strength of the up-down direction of the packaging box 1 can be increased by arrange | positioning the width direction of a corrugated board material so that it may become the up-down direction of each side wall of the packaging box 1. FIG. If the cardboard sheet material is arranged in this way, even if a force is applied in the direction from the top surface portion 2 to the bottom surface portion 4 by, for example, stacking a plurality of packaging boxes 1, the packaging box disposed on the lower side. It is possible to prevent 1 from being deformed.

  In the following description, the storage space D of the packaging box 1 is described as the inside of the packaging box 1 or simply the inside, and the space opposite to the storage space D of the packaging box 1 separated by each surface of the packaging box 1. Is described as the outside of the packaging box 1 or simply the outside. The left-right direction, the up-down direction, and the front-rear direction are directions shown in the drawings. Further, in the description of FIG. 1, since the rear side wall B of the packaging box 1 has the same configuration as the front side wall A, the front side wall A will be described, and a detailed description of the rear side wall B will be given. Is omitted.

  The bottom surface portion 4 is a portion that becomes the bottom surface of the packaging box 1 and is a portion that mainly supports the weight of the contents. The upper surface portion 2 that faces the bottom surface portion 4 across the storage space D is a portion that forms the upper surface of the packaging box 1.

  The side wall portion 3 and the side wall portion 5 are a pair of side walls facing each other with the storage space D interposed therebetween, and are connected to the upper surface portion 2 and the bottom surface portion 4 substantially orthogonally to each other. In addition, the upper surface part 2 and the side wall part 5 are connected by fixing the fixing part 21 provided in the side wall part 5 to the inner surface of the upper surface part 2 by a fixing member such as an adhesive. The cylindrical body constituted by the upper surface portion 2, the side wall portion 3, the bottom surface portion 4 and the side wall portion 5 is the cylindrical body portion in the scope of the utility model registration claim.

From the side a ₁ c ₁ that is the side of the upper surface portion 2, the inner flap 9 </ b> F is substantially orthogonal to the upper surface portion 2 and extends toward the bottom surface portion 4. The inner flap 9F is disposed so as to be in contact with the inner surfaces of the outer flap 6R and the outer flap 6L described later, and covers a part of one opening of the storage space D.

The outer flap 6R extends from the side c ₁ c ₂ which is the side of the side wall portion 3 toward the side wall portion 5 substantially orthogonal to the side wall portion 3. Similarly, the outer side flap 6 </ b> L extends from the side a ₁ a ₂ of the side wall 5 toward the side wall 3 substantially perpendicular to the side wall 5.

  In the outer flap 6R and the outer flap 6L on the bottom face portion 4 side, push pieces 10 partitioned by cutting are respectively provided. Further, an opening that is generated when the pushing piece 10 is pushed inward is an insertion port 23.

The insertion slot 23 is provided with a locking portion 11 substantially parallel to the side a ₂ c ₂ of the packaging box 1. This latching | locking part 11 is a part latched with the latching | locking part 13 provided in the outer side flap 7F mentioned later so that a latching and detachment | leave are possible.

An outer flap 7F extends from the side a ₂ c ₂ of the bottom surface portion 4 toward the top surface portion 2 substantially orthogonal to the bottom surface portion 4. The outer flap 7F is disposed so as to contact the outer surfaces of the outer flap 6R and the outer flap 6L, and covers a part of the outer flap 6R and the outer flap 6L.

At both corners of the side on the upper surface portion 2 side of the outer flap 7F, insertion portions 12 are provided symmetrically about the side b ₁ b ₂ . The insertion portion 12 is provided with a locking portion 13 substantially parallel to the side a ₂ c ₂ of the outer flap 7F.

  This insertion part 12 is a part inserted in the insertion port 23 provided in the position corresponding to the outer side flap 6R and the outer side flap 6L, respectively. When inserting the insertion portion 12 into the insertion port 23, first, the outer flap 7F is slightly pushed and bent outward, so that the insertion portion 12 is substantially in the same position as the pressing pieces 10 provided on the outer flap 6R and the outer flap 6L. Like that. Thereafter, the pushing piece 10 is pushed inward to open the insertion port 23, and the insertion portion 12 is inserted into the insertion port 23 (see FIG. 3A).

  When the insertion portion 12 is inserted into the insertion port 23, the locking portion 13 provided in the insertion portion 12 and the locking portion 11 provided in the insertion port 23 are locked in a detachable manner (FIG. 3 ( See b). By these locking, the outer side flap 7F, the outer side flap 6R and the outer side flap 6L are locked so as to be locked and detachable, and the side wall A of the packaging box 1 is formed.

The outer flap 7F is provided with a polygonal line 20a, a polygonal line 20b, and a polygonal line 20c. Polygonal line 20a from outer flap 7F near side _a 2 _{c 2} midpoints in which the point _{b 2,} the sides _a 2 _{c 2} and substantially perpendicular direction toward the side opposite the side _a 2 _{c 2} of the outer flap 7F It is a polygonal line extending to Polygonal line 20b from the vicinity of the midpoint of the side _a 2 _{b 2,} as the extend toward the side _a 2 _{c 2} and opposite sides of the outer flap 7F, is a line which is provided so as to close the fold line 20a. The polygonal line 20c is a polygonal line provided symmetrically with the polygonal line 20b around the polygonal line 20a.

  In the present embodiment, the side wall A of the packaging box 1 is formed by combining a plurality of flaps. In such a packaging box, for example, when a plurality of packaging boxes 1 are stacked and a force is applied in a direction from the top surface portion 2 toward the bottom surface portion 4, a vertical force is also applied to the outer flap 7F. become. When such a force is applied, the outer flap 7F is deformed so as to bulge outward, and the insertion portion 12 that has been inserted into the insertion port 23 is easily removed. However, if a broken line is provided on the outer flap 7F as in the present embodiment, the vertical force is dispersed, and the outer flap 7F is difficult to deform. In other words, a part of the force applied in the vertical direction also works in the direction of bending the outer flap 7F along the broken line, so that the deformation of the outer flap 7F that is easily released can be prevented.

  In addition, an inner side flap 9B, an outer side flap 8R, an outer side flap 8L, and an outer side flap 7B are provided on the rear side of the packaging box 1 in the same manner as the front side, and the pushing piece 14, the locking part 15, the insertion part 16, A locking portion 17 is provided. Then, the side wall B is formed by combining these flaps and inserting the insertion portion 16 provided at the corner of the outer flap 7B into the insertion port 24 while pushing the pushing piece 14 inward. Similarly to the outer flap 7F, the outer flap 7B is provided with a fold line 20a, a fold line 20b, and a fold line 20c, respectively, so that the same effect as that of the outer flap 7F can be obtained.

  In addition, the handle part 22R and the handle part 22L which were divided by the notch | incision are provided in the part by the side of the upper surface part 2 of the side wall part 3 and the side wall part 5, respectively. The handle portion 22R and the handle portion 22L are portions used as handles when the packaging box 1 is transported.

  FIG. 2 is a development view of the packaging box 1. The packaging box 1 is formed by bending or joining a sheet member E formed from a single cardboard sheet material in a shape as shown in FIG. In the present embodiment, as described above, in order to make the strength in the vertical direction of the packaging box 1 (the direction from the top surface portion 2 toward the bottom surface portion 4) sufficient, the corrugated cardboard sheet material extends in the direction in which the center line C extends. Corrugated sheet material is arranged in the width direction.

  If the cardboard sheet material is arranged in this way, when the packaging box 1 is assembled, the side wall portion 3, the side wall portion 5, the outer side flap 6R, the outer side flap 6L, the outer side flap 8R, and the outer side flap 8L are in the vertical direction. It becomes the same as the width direction. For this reason, it can be set as the packaging box strong against the force of an up-down direction.

Hereinafter, the sheet member E that forms the packaging box 1 will be described with reference to FIG. In addition, in description, the name of each structure of the sheet | seat member E is demonstrated using the name of each structure of the corresponding packaging box 1. FIG. For example, in FIG. 2, the region surrounded by the points a ₁ c ₁ g ₁ e ₁ is a portion that becomes the upper surface portion 2 of the packaging box 1, and therefore the region is referred to as the upper surface portion 2. In addition, the broken line in a figure has shown the broken line.

The sheet member E has a line-symmetric shape with the center line C as the center. The area surrounded by the points a ₂ c ₂ g ₂ e ₂ located at the approximate center of FIG. 2 is the bottom surface portion 4 that becomes the bottom surface of the packaging box 1. From the side a ₂ e ₂ of the bottom surface part 4, the side wall part 5 extends in the direction in which the center line C extends. Similarly, from the side c ₂ g ₂ , the side wall part 3 extends in the direction in which the center line C extends. Yes. Further, from the side a ₂ c ₂ and the side e ₂ g ₂ , the outer flap 7F and the outer flap 7B extend symmetrically in the direction orthogonal to the center line C, respectively.

Cutouts are provided on the sides of the outer flap 7F adjacent to the outer flap 6R and the outer flap 6L. Also, two places of notches in the side facing the side a ₂ c ₂ of the outer flap 7F is provided. The portions at both corners of the outer flap 7F partitioned into polygonal shapes by these notches are the insertion portions 12. Of the sides of the insertion portion 12, the side formed substantially parallel to the side a ₂ c ₂ is the locking portion 13. The outer flap 7B is also provided with an insertion portion 16 and a locking portion 17 in line symmetry with the outer flap 7F with the center line C as the center.

  The outer flap 7F and the outer flap 7B are the third flap in the scope of the utility model registration request. The insertion portion 12 and the insertion portion 16 are the insertion portion in the scope of the utility model registration request, and the locking portion 13 and the locking portion 17 are the first locking portion in the scope of the utility model registration request.

The outer flap 7F, sides _a 2 _c side _a 2 _{c 2} and substantially perpendicular from the vicinity of the point _{b 2} a ₂ midpoint, line 20a is provided to extend in a direction toward the side opposite the side _a 2 _{c 2} ing. In addition, a fold line 20b extending from the vicinity of the middle point of the side a ₂ b ₂ toward the fold line 20a as it approaches the side facing the side a ₂ c ₂ is provided. Further, a fold line 20c is provided symmetrically with the fold line 20b around the fold line 20a.

  Similarly, the outer flap 7B is provided with a fold line 20a, a fold line 20b, and a fold line 20c in line symmetry with the outer flap 7F with the center line C as the center. The broken line 20a, the broken line 20b, and the broken line 20c are the broken lines in the claims of the utility model registration.

  In the present embodiment, as described above, since the width direction of the corrugated cardboard sheet material is aligned in the direction in which the center line C extends, when the packaging box 1 is assembled, the vertical direction of the outer flap 7F and the outer flap 7B is In the flow direction of the corrugated cardboard sheet material. For this reason, for example, when the packaging box 1 is overlapped and a force is applied in the direction from the top surface portion 2 to the bottom surface portion 4 and a vertical force is applied to the outer flap 7F and the outer flap 7B, the outer flap 7F. And the outer side flap 7B bulges outside, and is easily deformed. However, by providing a polygonal line as in this embodiment, the force is dispersed, so that such deformation can be prevented.

From the side c ₁ g ₁ of the side wall part 3, the upper surface part 2 extends in the direction in which the center line C extends. Further, the outer flap 6R and the outer flap 8R extend symmetrically from the side c ₁ c ₂ and the side g ₁ g ₂ of the side wall 3 in the direction orthogonal to the center line C, respectively.

  The outer flap 6R is a flap that covers substantially the entire one opening of the storage space D together with an outer flap 6L described later. Further, the outer flap 8R is a flap that covers substantially the entire other opening of the storage space D together with an outer flap 8L described later. Note that a handle 22 </ b> R partitioned by a cut line is provided on a portion of the side wall 3 on the upper surface 2 side.

A pushing piece 10 defined by a cut line is provided at a portion of the outer flap 6R corresponding to the insertion portion 12 provided on the outer flap 7F. An opening generated when the pushing piece 10 is pushed inward is an insertion port 23. Further, a portion of the side of the insertion opening 23 provided on the center line C side and substantially parallel to the side b ₂ c ₂ is the locking portion 11. The engaging part 11 is a part that is engaged with the corresponding engaging part 13 provided on the outer flap 7F and is removably engaged.

  Also on the outer flap 8R, the pushing piece 14 and the locking portion 15 are provided in line symmetry with the outer flap 6R with the center line C as the center. An opening that is generated when the pushing piece 14 is pushed inward is an insertion port 24. And the latching | locking part 15 provided in the insertion port 24 is a part latched and detachable with the corresponding latching | locking part 17 provided in the above-mentioned outer side flap 7B.

From the side a ₁ a ₂ and the side e ₁ e ₂ of the side wall portion 5, the outer flap 6L and the outer flap 8L extend symmetrically in the direction orthogonal to the center line C, respectively. A pushing piece 10 partitioned by cutting is provided at a portion of the outer flap 6L corresponding to the insertion portion 12 provided in the outer flap 7F. An opening that is generated when the pushing piece 10 is pushed inward is an insertion opening 23. Further, a portion of the side of the insertion port 23 that is provided on the center line C side and is substantially parallel to the side a ₂ b ₂ is the locking portion 11. The engaging part 11 is a part that is engaged with the corresponding engaging part 13 provided on the outer side flap 7F so as to be engaged and disengaged.

  Also on the outer flap 8L, the pushing piece 14 and the locking portion 15 are provided at positions symmetrical to the outer flap 6L with the center line C as the center. An opening generated when the pushing piece 14 is pushed inward is an insertion port 24. And the latching | locking part 15 provided in the insertion port 24 is a part latched and detachable with the corresponding latching | locking part 17 provided in the above-mentioned outer side flap 7B.

  The outer flap 6R, the outer flap 6L, the outer flap 8R, and the outer flap 8L are the second flaps in the utility model registration claim. The insertion port 23 and the insertion port 24 are the insertion port in the scope of the utility model registration claim, and the locking portion 11 and the locking portion 15 are the second locking portion in the scope of the utility model registration claim.

From the side a ₁ c ₁ and the side e ₁ g _{1 of the} upper surface portion 2, the inner flap 9F and the inner flap 9B extend symmetrically in the direction orthogonal to the center line C, respectively. Each of the inner flap 9F and the inner flap 9B is a portion that is bent on the storage space D side so as to be substantially orthogonal to the upper surface portion 2 and covers a part of each opening of the storage space D. At this time, the respective flaps are arranged so as to contact the inner surfaces of the outer flap 6R, the outer flap 6L, the outer flap 8R, and the outer flap 8L. The inner flap 9F and the inner flap 9B are the first flap in the scope of the utility model registration request.

From the side a ₁ e ₁ of the side wall portion 5, the fixing portion 21 extends in the direction in which the center line C extends. The fixing portion 21 is a portion that connects the upper surface portion 2 and the side wall portion 5 using a fixing member such as an adhesive. Specifically, in a state in which the sides a ₁ e ₁ side a ₁ e ₁ and the side wall portion 5 of the upper surface portion 2 is brought into contact so as to match the inner top portion 2 of the fixing unit 21 by using the fixing member Fix it to the surface. Note that a handle portion 22 </ b> L partitioned by a cut line is provided on a portion of the side wall portion 5 on the upper surface portion 2 side.

  According to the packaging box 1 having the above-described configuration, it is not necessary to use a fixing member or the like for fixing the flap. Therefore, the assembly can be performed with an easy operation. Moreover, since each flap which comprises the side wall A and the side wall B which are the cover parts of the storage space D of the packaging box 1 is latched and detachable by each latching | locking part, the packaging box 1 is natural. It can be easily opened and unpacked.

  Furthermore, in this embodiment, since the cardboard sheet material is arranged with the width direction of the cardboard sheet material constituting the packaging box 1 aligned with the vertical direction of the packaging box 1, the cardboard sheet material is directed from the top surface portion 2 toward the bottom surface portion 4. The packaging box is strong against various vertical forces. On the other hand, when the cardboard sheet material is arranged in this way, the vertical direction of the outer flap 7F and the outer flap 7B becomes the flow direction of the cardboard sheet material. In this case, when a vertical force is applied to the packaging box 1, the outer flap 7 </ b> F and the outer flap 7 </ b> B are deformed so as to bulge outward, and the locking is easily released. However, by providing the outer flap 7F and the outer flap 7B with a fold line along the flow direction, it is possible to prevent the outer flap 7F and the outer flap 7B from being easily released from being locked. For this reason, even if it is a case where the force of an up-down direction is added to the packaging box 1, for example by stacking a plurality of packaging boxes 1, it is a packaging box which is hard to release the flap.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. The basic configuration of the packaging box 100 of this embodiment is the same as that of the first embodiment, but is different from the first embodiment mainly in the shape of the flap extending from the upper surface portion 2 and its arrangement. . Therefore, in this embodiment, only a different part from 1st embodiment is demonstrated and description of another common part is abbreviate | omitted. In the description of FIG. 4, the front side wall A and the rear side wall B of the packaging box 100 have the same configuration, so the front side wall A will be described and a detailed description of the rear side wall B will be given. Is omitted.

From the side a ₁ c ₁ of the upper surface portion 2 of the packaging box 100, the outer side flap 109 F is substantially orthogonal to the upper surface portion 2 and extends toward the bottom surface portion 4. The outer flap 109F is disposed so as to contact the outer surfaces of the outer flap 6R and the outer flap 6L, and covers a part of the outer flap 6R and the outer flap 6L.

At both corners of the side on the bottom surface 4 side of the outer flap 109F, insertion portions 112 are provided symmetrically. The insertion part 112 is provided with a locking part 113 substantially parallel to the side a ₁ c ₁ of the outer flap 109F. This insertion part 112 is a part inserted in the insertion port 123 provided in the outer side flap 6R and the outer side flap 6L which will be described later.

The outer flap 109F is provided with a polygonal line 120a, a polygonal line 120b, and a polygonal line 120c. Polygonal line 120a from the vicinity of the side _a 1 _c midpoint at which point _{b 1} of the _first outer flap 109F, the side _a 1 _{c 1} and substantially orthogonal, direction toward the side opposite the side _a 1 _{c 1} of the outer flap 109F It is a polygonal line extending to Polygonal line 120b is, as extending toward the side opposite from substantially near the midpoint of the side _a 1 _{b 1} a side _a 1 _{c 1} of the outer flap 109F, is a line which is provided so as to close the fold line 120a. The polygonal line 120c is a polygonal line provided symmetrically with the polygonal line 120b around the polygonal line 120a.

  In the positions corresponding to the insertion portions 112 provided in the outer flap 109F on the outer flap 6R and the outer flap 6L, push pieces 110 partitioned by cutting are respectively provided. An opening generated when the pushing piece 110 is pushed inward is an insertion port 123.

The insertion slot 123 is provided with a locking portion 111 that is substantially parallel to the side a ₁ c ₁ of the packaging box 100. The engaging portion 111 is a portion that engages with and disengages from the engaging portion 113 provided on the outer flap 109F, and the outer flap 109F, the outer flap 6R, and the outer flap 6L are engaged by this engagement. It is locked so that it can be stopped and released.

  FIG. 5 is a development view of the packaging box 100. The packaging box 100 is formed by performing an assembling operation such as bending or joining a sheet member F formed in a shape as shown in FIG. In addition, the direction of the width direction and the flow direction of the cardboard sheet material is the same as that of the first embodiment.

Hereinafter, the sheet member F forming the packaging box 100 will be described with reference to FIG. The sheet member F has a line-symmetric shape with the center line C as the center. From the sides a ₁ c ₁ and e ₁ g _{1 of the} upper surface portion 2, the outer flap 109 </ b> F and the outer flap 109 </ b> B extend symmetrically in the direction perpendicular to the center line C.

At the corners at both ends of the side facing the side a ₁ c ₁ among the sides of the outer flap 109F, insertion portions 112 that are partitioned into polygonal shapes by notches are provided. Of the sides of the insertion portion, a portion substantially parallel to the side a ₁ c ₁ is the locking portion 113. Similarly, an insertion portion 116 and a locking portion 117 are provided at the corners of the sides of the outer flap 109B in line symmetry with the outer flap 109F with the center line C as the center. The outer flap 109F and the outer flap 109B are the first flap in the utility model registration claim. Further, the insertion portion 112 and the insertion portion 116 are the insertion portions in the scope of the utility model registration request, and the locking portion 113 and the locking portion 117 are the first locking portions in the scope of the utility model registration request. Yes.

  The outer flap 109F is provided with a polygonal line 120a, a polygonal line 120b, and a polygonal line 120c, respectively, in the same manner as the polygonal line provided on the outer flap 7F. The outer flap 109B is also provided with a fold line 120a, a fold line 120b, and a fold line 120c symmetrically with the outer flap 109F with the center line C as the center.

  Thus, by providing a broken line on the outer flap 109F and the outer flap 109B, for example, the upper surface portion 2 can be used as the bottom surface side of the packaging box. That is, since the outer flap 109F and the outer flap 109B extending from the upper surface portion 2 are also provided with a fold line, even if the upper surface portion 2 is used as the bottom surface side of the packaging box, the outer flap 109F and the outer flap 109B are deformed. This is because it is prevented.

  Pushing pieces 110 partitioned by cutting are provided at positions corresponding to the insertion portions 112 provided on the outer flap 109F on the outer flap 6R and the outer flap 6L. An opening generated when the pushing piece 110 is pushed inward is an insertion port 123. In addition, the insertion port 123 is provided with a locking portion 111 as in the insertion port 23. The locking portion 111 is a portion that is locked to and detachable from the locking portion 113 provided on the outer flap 109F.

  The outer flap 8R and the outer flap 8L are also provided with push-in pieces 114 and locking portions 115, respectively, symmetrically with the outer flap 6R and the outer flap 6L with the center line C as the center. An opening that is generated when the pushing piece 114 is pushed inward is an insertion port 124. The insertion port 124 and the locking portion 115 are the insertion port and the second locking portion in the scope of the utility model registration claim.

  In the packaging box 100 having the above configuration, the outer flap 109F and the outer flap 109B extending from the upper surface portion 2 are also locked to the outer flap 6R, the outer flap 6L, the outer flap 8R, and the outer flap 8L, respectively. The flaps constituting the side wall A and the side wall B of the packaging box 100 are more reliably locked.

  Further, since the outer flap 109F and the outer flap 109B are provided with a broken line, for example, the upper surface portion 2 can be used as the bottom surface side of the packaging box. That is, even if it is used as such, deformation of the outer flap 109F and the outer flap 109B is suppressed by the broken lines provided on the outer flap 109F and the outer flap 109B, and the flap is unintentionally released. This is because it is prevented.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, the outer flap 7F, the outer flap 7B, the outer flap 109F, and the outer flap 109B are each provided with three broken lines, but a different number of broken lines may be provided. Moreover, each broken line may be parallel, and may be provided in different modes such as left-right asymmetry.

  In the above embodiment, the outer flap 7F and the outer flap 7B and the outer flap 109F and the outer flap 109B are provided with a broken line in the same manner. However, in another embodiment, the outer flap 7F and the outer flap 7B and the outer flap 109F and the outer flap 109B may be provided with different lines, such as different numbers. Moreover, the aspect which does not provide a broken line in the outer side flap 109F and the outer side flap 109B may be sufficient. Moreover, although the packaging box comprised from the corrugated cardboard material was described in the said Example, you may be comprised by other well-known members, such as cardboard.

DESCRIPTION OF SYMBOLS 1 Packaging box 2 Upper surface part 3 Side wall part 4 Bottom face part 5 Side wall part 6R Outer flap 6L Outer flap 7F Outer flap 7B Outer flap 8R Outer flap 8L Outer flap 9F Inner flap 9B Inner flap 10 Pushing piece 11 Locking part 12 Insertion part 13 Locking portion 14 Push-in piece 15 Locking portion 16 Insertion portion 17 Locking portion 20a Folding line 20b Folding line 20c Folding line 21 Fixed portion 22R Handle portion 22L Handle portion 23 Insertion port 24 Insertion port 100 Packaging box 109F Outer flap 109B Outer flap 110 Pushing piece 111 Locking portion 112 Insertion portion 113 Locking portion 114 Pushing piece 115 Locking portion 116 Insertion portion 117 Locking portion 123 Insertion port 124 Insertion port A Side wall B Side wall C Centerline D Storage space E Sheet material F Sheet material

Claims (3)

An upper surface part forming the upper surface of the packaging box;
A bottom surface forming a bottom surface;
A pair of side wall portions that connect the upper surface portion and the bottom surface portion and constitute a cylindrical body portion together with the upper surface portion and the bottom surface portion;
A first flap extending from the side of the top surface adjacent to at least one opening of the cylindrical body portion toward the bottom surface and covering at least a part of the opening;
A pair of second flaps extending from one side of the side wall adjacent to the opening toward the other side wall facing the opening, and covering at least a part of the opening;
A third flap extending from the side of the bottom surface adjacent to the opening toward the top surface and covering at least a portion of the second flap;
An insertion portion provided at a corner of the third flap;
A first locking portion provided in the insertion portion;
An insertion port provided at a position corresponding to the insertion portion of the second flap, the insertion portion being inserted from the outside;
A second locking portion which is a side of the insertion opening and is provided so as to be able to lock and detach from the first locking portion;
The packaging box having at least one fold line extending from a side of a tip of the third flap toward an adjacent side of the third flap and the bottom surface. A packaging box formed from a corrugated cardboard sheet material having a shin formed in a substantially S-shape with a continuous cross section and a liner sandwiching the shin,
The corrugated sheet material is arranged so that the ridgeline of the middle shin extends in a direction substantially orthogonal to the upper surface portion and the bottom surface portion in at least the side wall portion and the second flap,
In the third flap, the corrugated sheet material is arranged so that a ridge line of the center of the corrugated sheet material extends in a direction substantially parallel to the upper surface portion and the bottom surface portion. Item 4. A packaging box according to item 1. An insertion portion provided at a corner of the first flap;
A first locking portion provided in the insertion portion;
An insertion port provided at a position corresponding to the insertion portion of the second flap, the insertion portion being inserted from the outside;
A second locking portion which is a side of the insertion port and is provided so as to be locked and detachable with the first locking portion;
The packaging box according to claim 1 or 2, characterized by comprising: