JP2012071855A - Packaging box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flip-top carton type packaging box which makes it possible to surely lock a cover to a body part without providing a piece of a mouth part, and is easily assembled.SOLUTION: By holding an upper part of the packaging box 1 and pulling it up, and breaking unsealing lines 9a and 9b, a portion lower than the unsealing lines 9a and 9b of the packaging box 1 becomes a body part 20 to contain contents, and a portion upper than the unsealing lines 9a and 9b becomes a cover 21 supported to freely open/close the body part 20 through a hinge line 10. When the cover 21 is turned to close an opening 23, both sides of an edge of a cover locking piece 13 projecting from an opening edge 21a of the cover 21 are inserted inside the opening edge 20a of the body part 20, whereby the cover 21 is locked to the body part 20, and kept in a closed state.

Description

  The present invention relates to a rectangular tube-shaped paper packaging box that is divided into a lid part and a main body part via a hinge line and that can be opened and closed, and particularly relates to a method for locking the lid part.

  Conventionally, a so-called flip top carton that can be opened and opened by breaking the opening line provided at the upper part of the rectangular tube box, can be divided into a lid part and a body part that can be freely opened and closed. It is used as a container for various products such as confectionery, cigarettes, and small medical instruments because the entire upper part of the container is opened and the contents can be easily taken out.

  In the flip top carton as described above, when the lid is closed again after opening and used as a container, the lid opens due to the elastic force (restoring force) of the hinge between the lid and the main body. was there.

  Normally, a mouth piece protruding from the opening edge of the main body is formed, and the lid is locked to the main body by covering the mouth with the lid. Further, in Patent Literature 1, a guide piece provided on both sides of the mouth piece and an insertion space formed between the inner edges of the guide piece are provided, and the guide portion is provided inside the insertion space. A kerf that follows the inner edge of each piece is formed, and a latching piece that is defined by the opposing kerf and whose mouth edge faces the insertion space is formed. A method has been proposed in which the hook is securely locked to the main body.

Utility Model Registration No. 3056312

  However, in order to form the mouth piece at the opening edge of the main body portion, it is necessary to provide a mouth piece portion of the same size as the side surface of the main body portion on the sheet material for assembling the box body. There has been a problem that the material cost becomes high, and the method of Patent Document 1 has a problem that the configuration of the mouth piece is complicated, leading to a decrease in assembly workability in addition to an increase in cost.

  In view of the above problems, an object of the present invention is to provide a flip-top carton type packaging box that can securely lock the lid to the main body without providing a mouth piece and is easy to assemble.

  In order to achieve the above object, the present invention is formed in a rectangular tube box having a front plate, a rear plate, a pair of left and right side plates, a top plate and a bottom plate, and a rear plate of the rectangular tube box. A hinge line, and an opening line that is formed on the front plate and the side plate of the rectangular tube box and has both ends connected to the hinge line, and the contents are stored by the hinge line and the opening line. In a packaging box divided into a main body portion including the bottom plate and a lid portion including the top plate capable of opening and closing the main body portion, the lid portion is engaged with the lid portion along the inner surface of the front plate. A piece is provided, and with the lid closed, at least a part of the tip of the lid locking piece protruding from the opening edge of the lid is inserted inside the opening edge of the main body. It is a feature.

  In the packaging box having the above-described configuration, the opening line formed on the front plate is curved so as to protrude downward from the front plate, and the tip of the lid locking piece Both sides are inserted into the opening edge inside the main body.

  Further, in the packaging box having the above-described configuration, the opening line formed on the front plate is curved so as to protrude upward from the front plate, and the tip of the lid portion locking piece The center of the part is inserted inside the opening edge of the main body.

  In the packaging box having the above-described configuration, the hook portion that can be cut and raised from the front plate is formed on the upper side of the unsealing line of the front plate. The hook portion is provided so as to completely cover the inside of the front plate.

  Moreover, this invention is a packaging box of the said structure. WHEREIN: The said cover part locking piece is one sheet with the said front plate, back plate, side plate, top plate, and bottom plate which comprise the said rectangular tube-shaped box body. It is characterized by being integrally formed from materials.

  In the packaging box having the above-described configuration, the present invention is provided with an adhesive piece that is connected to the upper end of the front plate and is bonded to the back surface of the top plate, and the lid locking piece is the adhesive piece. It is characterized in that it is extended to the tip.

  According to the first configuration of the present invention, at least a part of the tip of the lid locking piece protruding from the opening edge of the lid is inserted inside the opening edge of the main body, so that the lid is securely closed. Can be held in. Moreover, since it is not necessary to form a mouth piece at the opening edge of the main body as in the prior art, the structure and assembly work of the packaging box are simplified.

  Moreover, according to the 2nd structure of this invention, in the packaging box of the said 1st structure, the opening edge of the cover part curved so that it might become convex toward the downward direction of a front board with the closing operation of a cover part Both ends of the front end of the lid locking piece protruding from both ends are gradually bent while interfering with the opening edge of the main body, and engage with both ends of the opening edge of the main body. Therefore, it becomes a packaging box excellent in usability that allows the lid portion to be reliably locked only by performing a normal operation of closing the lid portion.

  Moreover, according to the 3rd structure of this invention, it protrudes from the approximate center (concave part) of the opening edge of the cover part curved so that it might become convex toward the upper direction of a front plate in the packaging box of the said 1st structure. The lid locking piece to be engaged engages with the center (convex portion) of the opening edge of the main body curved in a convex shape upward. Therefore, the engagement between the lid portion locking piece and the opening edge of the main body portion is unlikely to be released, and the lid portion can be reliably held in the closed state.

  According to the fourth configuration of the present invention, in the packaging box of any one of the first to third configurations, the hook portion that can be cut and raised from the front plate is provided on the upper side of the opening line of the front plate. By forming and providing the lid portion locking piece so as to completely cover the hook portion from the inside of the front plate, the lid plate locking piece plays a role of closing the hole formed by using the hook portion from the inside. Therefore, it is possible to effectively prevent a deterioration in the design of the packaging box, leakage of contents from the packaging box, and entry of foreign matter into the packaging box.

  Further, according to the fifth configuration of the present invention, in the packaging box of any one of the first to fourth configurations, the lid portion locking piece includes a front plate, a rear plate, and a rectangular tube box. By integrally forming from one sheet material together with the side plate, top plate and bottom plate, the number of members of the packaging box can be reduced and the assembly process can be simplified.

  Further, according to the sixth configuration of the present invention, in the packaging box of the fifth configuration, an adhesive piece is provided continuously to the upper end of the front plate and bonded to the back surface of the top plate. By extending the locking piece at the tip of the adhesive piece, the lid locking piece can be efficiently arranged in the sheet material before assembly, and the area of the sheet material required for punching can be reduced.

The expanded view of the packaging box which concerns on 1st Embodiment of this invention The perspective view which shows the state before opening of the packaging box of 1st Embodiment. Partial sectional view of the vicinity of the lid in FIG. The perspective view which shows the state after opening of the packaging box of 1st Embodiment. Partial sectional view of the vicinity of the lid in FIG. The perspective view which shows the state which cut and raised the hook part of the packaging box of 1st Embodiment. The expanded view of the packaging box which concerns on 2nd Embodiment of this invention The perspective view which shows the state which opened the packaging box of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a development view of a packaging box according to the first embodiment of the present invention, FIG. 2 is a perspective view showing a state before the packaging box of the first embodiment is opened, and FIG. 3 is a lid in FIG. It is a fragmentary sectional view (AA cross section of FIG. 2) of a part vicinity. In each figure, the same code | symbol is attached | subjected to the common part.

  As shown in FIG. 1, the packaging box 1 is assembled from a single sheet (thick paper) punched into a predetermined shape, and the front plate 2 and the left side plate 3a successively connected to the left end of the front plate 2 via a folding line. The rear surface plate 4, the right side surface plate 3 b, and the top surface plate 5 and the bottom surface plate 6 are connected to the upper and lower surfaces of the rear surface plate 4 via folding lines. In FIG. 1, the mountain fold line is indicated by a broken line, and the valley fold line is indicated by a one-dot chain line.

  An adhesive piece 7 a bonded to the back surface of the top plate 5 is connected to the upper end of the front plate 2 via a folding line, and an adhesive piece 7 b bonded to the back surface of the bottom plate 6 is connected to the lower end of the front plate 2. Are connected via a folding line. Further, an adhesive piece 7c bonded to the back surface of the right side plate 3b is connected to the right end of the front plate 2 via a folding line. Further, flaps 8 are connected to the upper and lower ends of the left side plate 3a and the right side plate 3b.

  Further, an open line 9a is formed from the left side plate 3a across the upper portion of the front plate 2 to the adhesive piece 7c, and an open line 9b is formed on the left side plate 3a. The opening line 9b is formed at a position overlapping the opening line 9a formed on the adhesive piece 7c when the packaging box 1 is assembled. A hinge wire 10 is formed on the rear plate 4 so as to connect the ends of the opening wires 9a and 9b. The unsealing line 9 a that crosses the front plate 2 draws a gentle curve that protrudes downward from the front plate 2.

  On the opposite side of the adhesive piece 7 a from the front plate 2, a lid locking piece 13 is continuously provided via a mountain fold line 11. A valley fold line 15 parallel to the mountain fold line 11 is formed on the lid locking piece 13. The dimension L1 from the tip of the lid locking piece 13 to the valley fold line 15 is substantially the same as the dimension L2 from the upper end of the front plate 2 to the center of the opening line 9a. On the upper side of the opening line 9 a of the front plate 2, a hook portion 17 surrounded by an arcuate perforation and a notch 19 continuous below the hook portion 17 are formed.

  The assembly procedure of the packaging box 1 is demonstrated using FIGS. First, the left side plate 3a, the rear side plate 4, the right side plate 3b, and the adhesive piece 7c successively connected to the front plate 2 are bent along the fold line, and the adhesive piece 7c is bonded to the inner side of the right side plate 3b. Next, the top plate 5, the bottom plate 6, the adhesive plates 7a, 7b connected to the front plate 2, the four flaps 8 connected to the left side plate 3a, and the right side plate 3b are bent along the fold line, An adhesive piece 7 b is bonded to the inside of the face plate 6.

  Next, as shown in FIG. 3, the lid locking piece 13 connected to the adhesive piece 7 a is bent along the mountain fold line 11 and the valley fold line 15. That is, the lid locking piece 13 is bent into an L-shaped cross section along the inner surface of the adhesive piece 7a and the front plate 2 (indicated by hatching in FIG. 3). Then, after filling the contents (not shown), the outer surface of the adhesive piece 7a is bonded to the back surface of the top plate 5 to seal the packaging box 1. In this way, the packaging box 1 as shown in FIG. 2 is assembled.

  When taking out the contents, the opening lines 9a and 9b are broken by grasping the upper portion of the packaging box 1 and pulling it upward. Thereby, the lower part of the packaging box 1 below the opening lines 9a and 9b becomes the main body part 20 for storing the contents, and the upper part of the opening lines 9a and 9b can freely open and close the main body part 21 via the hinge wire 10. It becomes the cover part 21 supported by.

  4 is a perspective view showing a state in which the packaging box 1 is opened, and FIG. 5 is a partial cross-sectional view in the vicinity of the lid in FIG. The opening lines 9a and 9b are broken, and the lid part 21 is rotated upward about the hinge line 10 as an axis, whereby an opening 23 is formed in the upper part of the main body part 20 as shown in FIG. Is possible. After taking out a predetermined amount of contents, the lid 21 is rotated downward to close the opening 23.

  As described above, the opening line 9a (see FIG. 2) crossing the front plate 2 is convex downward of the packaging box 1, and the opening on the front surface of the lid portion 21 after the opening line 9a is broken. The edge 21a is also convex downward. On the other hand, the lid portion locking piece 13 has a rectangular shape as shown in FIG. Therefore, as shown in FIGS. 4 and 5, both ends of the front end of the lid locking piece 13 protrude from the opening edge 21 a of the lid 21.

  Therefore, when the lid 21 is rotated to close the opening 23, the lid 21 is locked to the main body 20 by inserting both ends of the lid locking piece 13 into the opening edge 20 a of the main body 20. And held in the closed state. With this configuration, the lid 21 can be reliably held in the closed state even after the packaging box 1 is opened, and therefore leakage of contents and entry of foreign matter can be prevented.

  The opening edge 20a of the main body 20 has a gentle arc shape, and the lid locking piece 13 gradually protrudes from the center of the opening edge 21a of the lid 21 toward both ends. With the closing operation of 21, the both ends of the lid portion locking piece 13 are gradually bent while interfering with the opening edge 20a of the main body portion 20 and inserted into the inside of the opening edge 20a.

  Therefore, the lid 21 can be reliably locked only by performing the normal operation of closing the lid 21, and it is not necessary to perform a special operation such as deforming the main body 20 or the lid 21. Will also be an excellent packaging box.

  Further, when the packaging box 1 is suspended and displayed on a hanger, as shown in FIG. 6, a finger is inserted into the notch 19 to break the perforation, and the hook portion 17 is cut and used. At this time, since the notch 19 formed in the front plate 2 of the packaging box 1 is expanded to the portion where the hook portion 17 is cut and raised, a large hole is opened in the packaging box 1.

  However, in the configuration of the present embodiment, the cover plate locking piece 13 existing along the inner surface of the front plate 2 plays a role of closing the notch 19 from the inside. Accordingly, it is possible to effectively prevent the design of the packaging box 1 from being lowered, the leakage of the contents from the packaging box 1 and the entry of foreign matter into the packaging box 1.

  FIG. 7 is a developed view of the packaging box according to the second embodiment of the present invention, and FIG. 8 is a perspective view showing a state in which the packaging box of the second embodiment is opened. Portions common to the first embodiment are denoted by the same reference numerals. In the present embodiment, the unsealing line 9 a that crosses the front plate 2 has a gentle curve that protrudes upward from the front plate 2, and the rectangular lid locking piece 13 is formed on the lid 21. It protrudes from the approximate center (concave portion) of the opening edge 21a. Note that the development view of the packaging box 1, the state before opening, the assembly and the opening procedure are the same as those in the first embodiment, and the description thereof will be omitted.

  Also in the present embodiment, as in the first embodiment, when the lid 21 is rotated and the opening 23 is closed, the center of the front end of the lid locking piece 13 is inserted inside the opening edge 20a of the main body 20. Thus, even after the packaging box 1 is opened, the lid portion 21 can be reliably held in the closed state, so that leakage of contents and entry of foreign matter can be prevented.

  In addition, since the lid plate locking piece 13 closes the notch 19 from the inside, the design of the packaging box 1 is deteriorated when the hook portion 17 is used, the leakage of the contents from the packaging box 1, the inside of the packaging box 1 It is possible to effectively prevent the foreign matter from entering.

  In the present embodiment, since the center of the tip of the lid locking piece 13 is inserted into the convex portion of the opening edge 20a of the main body 20, the main body 20 or the lid 21 is slightly bent when the lid 21 is closed. There is a need. However, since the engagement between the lid locking piece 13 and the opening edge 20a is less likely to be disengaged than the first embodiment after the lid 21 is closed, the lid 21 can be held more securely than the first embodiment. It becomes possible.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of this invention. For example, in each of the above embodiments, the lid locking piece 13 is extended to the tip of the adhesive piece 7a, but is not limited thereto, and may be extended to the tip of the top plate 5. Alternatively, the lid locking piece 13 may be fixed to the inner surface of the front plate 2 as a separate member.

  Moreover, there is no restriction | limiting in particular also about the shape and magnitude | size of the packaging box 1, It can replace with the above-mentioned vertically long rectangular parallelepiped shape, and can also be applied to a planar-view square shape or horizontally long packaging box.

  The present invention is divided into a lid part and a main body part by a hinge line and an opening line, and can be used for a rectangular tube-shaped paper packaging box that can be opened and closed. A lid locking piece is provided, and at least a part of the tip of the lid locking piece is inserted inside the opening edge of the main body with the lid closed.

  By utilizing the present invention, it is possible to provide a flip top carton type packaging box that can securely lock the lid portion to the main body portion and is easy to assemble.

DESCRIPTION OF SYMBOLS 1 Packaging box 2 Front plate 3a Left side plate 3b Right side plate 4 Rear surface plate 5 Top surface plate 6 Bottom plate 7a-7c Adhesive piece 8 Flap 9a, 9b Opening line 10 Hinge line 11 Mountain fold line 13 Cover part locking piece 15 Valley fold line 17 Hook part 19 Notch 20 Main part 20a Opening edge (main part)
21 Lid 21a Opening edge (lid)
23 Opening

Claims (6)

A rectangular box having a front plate, a rear plate, a pair of left and right side plates, a top plate and a bottom plate;
A hinge wire formed on the rear plate of the rectangular tubular box;
Formed on the front plate and the side plate of the rectangular tube-shaped box body, and both ends are connected to the hinge wire,
In the packaging box divided by the hinge line and the opening line into a main body including the bottom plate for storing contents and a lid including the top plate capable of opening and closing the main body,
The lid portion is provided with a lid locking piece along the inner surface of the front plate, and the front end of the lid locking piece protruding from the opening edge of the lid portion with the lid closed. A packaging box, wherein at least a part of the packaging box is inserted inside the opening edge of the main body.   The opening line formed on the front plate is curved so as to protrude downward from the front plate, and both ends of the front end of the lid locking piece are inserted inside the opening edge of the main body. The packaging box according to claim 1.   The unsealing line formed on the front plate is curved so as to protrude upward from the front plate, and the center of the front end of the lid locking piece is located inside the opening edge of the main body. The packaging box according to claim 1, wherein the packaging box is inserted.   A hook portion that can be cut and raised from the front plate is formed above the opening line of the front plate, and the lid locking piece completely covers the hook portion from the inside of the front plate. The packaging box according to any one of claims 1 to 3, wherein the packaging box is provided as described above.   The lid portion locking piece is integrally formed from a single sheet material together with the front plate, the rear plate, the side plate, the top plate, and the bottom plate that constitute the rectangular tube box. The packaging box in any one of Claims 1 thru | or 4.   An adhesive piece is provided continuously to the upper end of the front plate and bonded to the back surface of the top plate, and the lid locking piece extends to the tip of the adhesive piece. The packaging box according to claim 5.

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