JP5324615B2 - Packaging container - Google Patents

Description

  The present invention relates to an openable / closable packaging container, and more particularly, to a packaging container suitable for storing food such as a hamburger provided in a fast food store or the like.

  As a packaging container for storing a hamburger or the like provided in a fast food restaurant or the like, as described in Patent Document 1 or Patent Document 2, the container section and the lid section are assembled from a single sheet with a predetermined score line. There are known packaging containers made of foamed synthetic resin or paper that can be freely opened and closed via a hinge part. FIG. 5 is a development view showing an example of such a packaging container, and FIG. 6 shows a perspective view of the packaging container assembled therefrom.

  The packaging container 1 includes a container part a and a lid part b. The container part a includes a bottom plate 11, a front plate 12, left and right side plates 13, 14 and a rear plate 15, and the front plate 12 is provided on both sides thereof. It has the extension parts 12a and 12a. The rear plate 15 also has extensions 15a and 15a on both sides thereof. Similarly, the lid b has a top plate 21, a front plate 22, left and right side plates 23 and 24, and a rear plate 25. The rear plate 25 has extension portions 25a and 25a on both sides thereof, The side plates 23 and 24 have extension portions 23a and 24a on the front side thereof. The upper edge of the rear plate 15 of the container part a and the lower edge of the rear plate 25 of the lid part b are connected to each other, and this part becomes the hinge part P of the packaging container 1 after assembly.

  In assembling, the front plates 12 and 22, the left and right side plates 13, 14 and 23, 24 and the rear plates 15 and 25 located around the bottom plate 11 and the top plate 21 were raised with respect to the bottom plate 11 and the top plate 21. The posture. In the container part a, the extension parts 12a, 12a on both sides of the front plate 12 are bonded to the front inner side surfaces of the left and right side plates 13, 14, and the extension parts 15a, 15a on both sides of the rear plate 15 are attached to the left and right side plates. It is adhered to the rear side inner surfaces of 13 and 14. As a result, a box-shaped container part a having four side walls extending outward at an angle α is formed. As illustrated in FIG. 1, the angle α is an angle formed by each side edge of the front plate 12, the left and right side plates 13 and 14, and the rear plate 15 with respect to the side of the bottom plate 11.

  In the lid portion b, the extension portions 25a and 25a on both sides of the rear plate 25 are bonded to the rear inner surfaces of the left and right side plates 23 and 24, and the front extension portions 23a and 24a of the left and right side plates 23 and 24 are attached. Is bonded to the inner surface of the front plate 22. Thereby, like the container part a, it is set as the box-shaped cover part b which four side walls spread outside at the angle (beta). Note that the angle β is an angle formed by each side edge of the front plate 22, the left and right side plates 23 and 24, and the rear plate 25 with respect to the side of the top plate 21 as illustrated in FIG. 1. The angle β and the angle α may be the same angle. Further, as shown in the drawing, the height of the front plate 22 of the lid portion b is higher than the height of the front plate 12 of the container portion a, and the heights of the left and right side plates 23 and 24 of the lid portion b are also the left and right sides of the container portion a. It is higher than the height of the side plates 13 and 14.

  In the assembled posture, a first lock protruding forward by the portions 12b, 12b of the extension portions 12a, 12a on both sides of the front plate 12 in the container portion a and the tip portions 13b, 14b of the left and right side walls 13, 14 Claws 12B and 12B are formed. Further, notches 23c and 24c are formed in the extension portions 23a and 24a of the left and right side plates 23 and 24 in the lid portion b, and the left and right end portions 22b of the top edge portions 23b and 24b and the upper edge of the front plate 22 are formed. , 22b form second locking claws 23B, 24B. That is, in the packaging container 1, first locking claws 12 </ b> B and 12 </ b> B are formed on the side of the container part a opposite to the hinge part P, and the second locking claw is formed on the side of the lid part b opposite to the hinge part P. 23B and 24B are formed.

  When the lid b is rotated from the opened position after assembly toward the container part a with the hinge part P as a fulcrum, the front plate 12 of the container part a and part of the left and right side plates 13 and 14 are covered. The front plate 22 of the portion b and the left and right side plates 23 and 24 are placed inside, and the second locking claws 23B and 24B slide on the front end portions of the first locking claws 12B and 12B. Then, when the first locking claws 12B and 12B are overcome, the first locking claws 12B and 12B enter the notches 23c and 24c. Thereby, the packaging container 1 is in a closed posture.

JP 2003-72749 A Design Registration No. 1089332

  In the packaging container 1 described above, the left and right side plates 13 and 14 of the container part a enter inside the left and right side plates 23 and 24 of the lid part b in the process of changing from the open position to the closed position. The side walls are configured to spread outwardly, and in the process of entering, the upper edges of the left and right side plates 13 and 14 of the container part a It rotates in contact with the inner surface. Extension portions 25a and 25a on both sides of the rear plate 25 are bonded to the rear side of the inner side surfaces of the left and right side plates 23 and 24 of the lid portion b, that is, the side close to the hinge portion P, and the extension portions are provided there. Step portions S corresponding to the thicknesses 25a and 25a are formed.

  When the upper edge of the left and right side plates 13 and 14 of the container part a is on the stepped part S, the resistance when closing the lid part b is increased, and smooth lid closing work may be hindered. At that time, the person who closes the lid pushes down the lid b with a greater force, which not only hinders the smoothness of the work, but also the large force at the time of pushing down causes the first locking. The claw 12B and the vicinity thereof may act on the upper edges of the notches 23c and 24c to cause cracks in the portions.

  The present invention has been made in view of the above circumstances, and in the packaging container having the shape described in Patent Documents 1 and 2, even when the packaging container becomes small, the lid closing operation is smoothly performed. It is an object to provide a packaging container that can be used in a simple manner. Another object of the present invention is to provide an upper edge of the notches 23c and 24c via the first locking claw 12B and its vicinity in the packaging container having the shape described in Patent Documents 1 and 2. It is an object of the present invention to provide a packaging container in which a crack is not generated in a portion even when a large force acts on the portion.

  A packaging container according to the present invention is a packaging container in which a container part and a lid part can be freely opened and closed via a hinge part, and the container part has a bottom plate, a front plate, left and right side plates, and a rear plate, and is an extension of the front plate. Part is bonded to the front inner surface of the left and right side plates, and the extension of the rear plate is bonded to the rear inner surface of the left and right side plates, and the lid is made of the top plate, front plate, left and right side plates and rear A plate, and an extension of the rear plate is adhered to the rear side inner surfaces of the left and right side plates, and the rear plate upper edge of the container portion and the rear plate lower edge of the lid portion are the hinge portions, A first latching claw is formed at an adhesive portion between the extension portion of the front plate and the front side inner surface of the left and right side plates on the opposite side of the hinge portion of the container portion, and the first locking claw is formed on the opposite side of the lid portion from the hinge portion. In the closed position, the front plate of the container part and a part of the left and right side plates are in the inside of the lid part. A notch portion into which the first locking claw of the container portion enters is formed in the vicinity of the portion where the second locking claw is formed in the first locking claw and the second locking claw In a packaging container having at least a configuration in which the first engaging claws of the container part enter the lid part, the upper end of the notch part has a rounded shape. It is characterized by being.

  By adopting this shape, it is possible to disperse the impact load when the upper edge of the first locking claw and the vicinity thereof abut against the upper end of the notch, and the generation of cracks is more effectively achieved. It can be avoided.

  In a preferred aspect of the packaging container according to the present invention, the upper edge of the extension portion of the front plate is higher than the upper edge of the left and right side plates in the adhesive portion between the extension portion of the front plate and the front side inner surface of the left and right side plates in the container portion. Is also positioned in the lower order.

  By adopting this configuration, the upper edge of the first locking claw and the vicinity thereof have a thickness equivalent to one sheet, and when that portion comes into contact with the upper edge of the notch with a large force. The lid closing operation becomes smooth due to the deformation of the upper edge of the first locking claw and the vicinity thereof, and as a result, it is possible to avoid the occurrence of cracks in the upper edge of the notch.

  According to the present invention, it is assembled from a single sheet with a required score line, and the container portion and the lid portion are connected by the hinge portion, so that an open posture and a closed posture can be taken selectively. In the packaging container thus made, it is possible to effectively avoid the occurrence of cracks at the joint between the front plate of the lid and the left and right side plates. Thereby, the packaging container according to the present invention is extremely effective as a packaging container for storing a hamburger provided in a fast food store or the like.

It is a perspective view shown in the state which assembled one form of the packaging container by this invention, and is equivalent to FIG. 6 which shows the conventional packaging container. The expanded view which shows the other form of the packaging container by this invention. The figure shown in the state which assembled the packaging container shown by the expanded view in FIG. The figure shown in the state which closed the packaging container shown by the expanded view in FIG. The development view of the conventional packaging container. In addition, the expanded view of the packaging container by this invention shown in FIG. 1 is shown with the virtual line. The figure shown in the state which assembled the packaging container shown by the expanded view in FIG.

  Hereinafter, the present invention will be described based on embodiments with reference to the drawings. FIG. 1 is a perspective view showing an assembled form of a packaging container according to the present invention, and corresponds to FIG. 6 showing a conventional packaging container. FIG. 2 is a developed view showing another form of the packaging container according to the present invention, FIG. 3 shows the assembled container, and FIG. 4 shows the packaging container closed.

  The packaging container 1a shown in FIG. 1 is different from the packaging container 1 described based on FIGS. 5 and 6 in the following three points, and the other points are the same. Accordingly, the same members as those of the packaging container 1 are denoted by the same reference numerals and description thereof is omitted, and only the three different points will be described in detail below. In addition, the structure which concerns on three different points 1, 2, and 3 is shown with the virtual line in FIG. 5, The development view of the packaging container 1a by this invention is obtained by cutting a sheet | seat along the line. It is done.

  The difference 1 is that a side plate extending from a lower end 31 of the stepped portion 30 is formed by forming a stepped portion 30 in the portions 13a and 14a adjacent to the hinge portion P on the upper edges of the left and right sideplates 13 and 14 of the container portion a. The upper edge 32 of 13 and 14 reaches the hinge part P.

  The difference 2 is that the upper edge 33 of the extension portions 12a and 12a of the front plate 12 is in an adhesive portion between the extension portions 12a and 12a of the front plate 12 and the front side inner surfaces of the left and right side plates 13 and 14 in the container portion a. It is a point located lower than the upper edges 34 of the left and right side plates 13 and 14.

  The difference 3 is that the upper ends 35 of the notches 23c and 24c into which the first locking claws 12B and 12B of the container part a in the lid part b enter are rounded.

  In the packaging container 1a of this form, due to the difference 1, when the lid part b is rotated in the direction of the arrow about the hinge part P for closing the lid, the corner part at the upper end of the step part 30 is provided. 30a first contacts the inner surfaces of the left and right side plates 23, 24 of the lid b. When the lid b is further rotated in the direction of the arrow after the contact, the left and right side plates 23 and 24 of the lid b are pushed out by the corner 30a at the upper end of the stepped portion 30 and its vicinity. It gradually spreads outward.

  Therefore, when the lid is closed, the upper edges of the left and right side plates 13 and 14 of the container portion a are bonded to the rear inner surfaces of the left and right side plates 23 and 24 of the lid portion b. , 25a, it is possible to avoid the above-described stepped portion S formed from above with a high probability. Accordingly, the lid closing operation can be smoothly performed until the closed posture is obtained.

  Further, due to the difference 2, the upper edges of the first locking claws 12B and 12B and the vicinity thereof are the thickness of one sheet, so that the portion is formed on the plate lid part b with a large force. When the upper edges 35 and 35 of the notches 23c and 24c are brought into contact with each other, the lid closing operation becomes smooth due to the deformation of the upper edges of the first locking claws 12B and 12B and the vicinity thereof, and the notches 23c. , 24c can be effectively prevented from cracking at the upper edges 35, 35.

  Further, due to the difference 3, the impact load when the upper edges of the first locking claws 12B and 12B and the vicinity thereof abut against the upper edges 35 and 35 of the notches 23c and 24c is dispersed. This makes it possible to more effectively avoid the occurrence of cracks at that portion.

  The packaging container 1b shown in FIGS. 2 to 4 is small as a whole as compared with the packaging container 1a shown in FIG. The function of each part constituting the packaging container 1b is almost the same as that of the packaging container 1a or the packaging container 1 shown in FIG. 1, FIG. 5, and FIG. Detailed description will be omitted.

  Since the packaging container 1b is small, the rear plates 15 and 25 and the front plates 12 and 22 have a low height. In particular, since the rear plates 15 and 25 are low in height, an extension 15a formed on the rear plate 15 of the container portion a and a lid are provided in order to secure a necessary bonding margin for the extensions 15a and 25a on both sides thereof. The angle θ formed by the side edge facing the extended portion 25a formed on the rear plate 25 of the portion b cannot be made large, and θ is a narrow angle as shown in the developed view of FIG.

  As a result, as shown in the perspective view of the assembled state in FIG. 3, the distance between the upper edges 36 of the left and right side plates 23 and 24 of the lid portion b and the upper ends of the extension portions 25a must be close. . Even in the packaging container 1b having such a configuration, the configuration of the difference 1 (configuration of the stepped portion 30) is provided on the left and right side plates 13 and 14 of the container portion a, so that the lid can be closed at an early stage of closing the lid. The left and right side plates 23, 24 of the portion b are pushed outward, so that the lid can be smoothly closed. Although description is omitted, as shown in the figure, the packaging container 1b also includes a configuration relating to the second and third differences.

  Note that the shapes of the extension portions 23a and 24a on the front side of the left and right side plates 23 and 24 of the lid portion a are different from those of the packaging container 1a, and the second locking claws 23B and 24B are formed on the front plate 22. It is comprised only by the right-and-left end parts 22b and 22b of an edge. Since this is a small container, the second locking claws 23B, 24B can be easily deformed to easily get over the first locking claws 12B, 12B, and take the closed position shown in FIG. This is to make it easier.

DESCRIPTION OF SYMBOLS 1, 1a, 1b ... Packaging container, a ... Container part, 11 ... Bottom plate, 12 ... Front plate, 12a, 12a ... Extension part of front plate, 12B, 12B ... First latching claw, 13, 14 ... Left and right Side plate, 15 ... rear plate, 15a, 15a ... rear plate extension, b ... lid, 21 ... top plate, 22 ... front plate, 23, 24 ... left and right side plates, 23a, 24a ... side plate extension, 23c , 24c ... notches formed in the extension portions of the left and right side plates, 23B, 24B ... second locking claws, 25 ... rear plate, 25a, 25a ... rear plate extension portion, P ... hinge portion, 30 ... step , 30a: upper end of the stepped portion, 31: lower end of the stepped portion, 32 ... upper edge of the side plate extending from the lower end of the stepped portion, 35 ... upper end of the notched portion to be inserted

Claims (1)

The container part and the lid part are openable and closable packaging containers via a hinge part. The container part has a bottom plate, a front plate, left and right side plates, and a rear plate, and an extension of the front plate is in front of the left and right side plates. Adhered to the inner side surface, and the extension of the rear plate is adhered to the rear inner surface of the left and right side plates. The lid has a top plate, front plate, left and right side plates, and rear plate. The upper part of the left and right side plates are bonded to the rear inner surface, and the upper edge of the rear plate of the container part and the lower edge of the rear part of the lid part are the hinge part, opposite to the hinge part of the container part A first latching claw is formed at an adhesive portion between the extension portion of the front plate on the side and the front side inner surfaces of the left and right side plates, and a second engagement claw is formed on the side opposite to the hinge portion of the lid portion. In the closed posture, the front plate of the container portion and a part of the left and right side plates are in the posture of entering the inside of the lid portion, and the second locking in the lid portion A notch portion into which the first locking claw of the container portion enters is formed near the portion where the first locking claw is formed, and the first engagement claw and the second locking claw are engaged with each other and closed. In a packaging container having at least a configuration for maintaining a posture,
The upper end of the cutout portion into which the first locking claw of the container portion in the lid portion enters is rounded, and the front inner side surface of the extension portion of the front plate and the left and right side plates in the container portion And the upper edge of the extension part of the front plate is positioned lower than the upper edges of the left and right side plates .

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