JP3363249B2 - Paperboard container - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container made of paperboard, which is used when various kinds of goods are stored therein.
In particular, it relates to a paperboard container that can be opened and closed using an engagement mechanism. 2. Description of the Related Art FIG. 4 shows an example of a conventional paperboard container.
It will be described based on. In this paperboard container, an upper container 41 having a downward concave portion and a lower container 42 having an upward concave portion are connected to each other via a folding curve 43 so as to be freely opened and closed. [0003] A bent piece 45 is continuously provided at a leading edge of the side wall 44 of the upper container 41 at a position opposite to the bent curve 43, and an engaging tongue piece 46 is projected from the center of the bent piece 45. Have been. On the other hand, at the center of the side wall 47 of the lower container 42 at a position facing the folding curve 43, the engaging tongue piece 46 is provided.
Is provided with an engagement slit 48 with which the engagement is made. That is, in this conventional example, the engaging tongue 46 and the engaging slit 48 constitute an engaging mechanism. [0006] However, the locking mechanism and the release of the engaging mechanism in the above-mentioned conventional paperboard container are very troublesome. Further, when the locking function is weak and the load of the goods stored in the inside is applied to the side wall 47 of the lower container 42, the side wall 47 is pushed out and the engaging slit of the engaging tongue piece 46 is engaged. There is a drawback that it is easy to come off because the number of fittings into the 48 decreases, and the appearance is poor. Accordingly, an object of the present invention is to provide a paperboard container which can be easily locked and unlocked, has a strong locking function, and has a good-looking engagement mechanism. [0009] In order to solve the above problems, the present invention opens and closes an upper container having a downward recess and a lower container having an upward recess through a folding curve. In a paperboard container, which is freely connected and engages the side walls of the upper container and the lower container at positions opposed to each other with the folding curve by an engaging mechanism, the engaging mechanism comprises a first loose engaging portion. And the second disengagement portion, the first disengagement portion, the tip of the first engagement piece extending to the tip edge of the side wall of one of the upper and lower containers, folded back outward By partially fixing, the other part is released and formed, and the second release engagement part is turned inward by turning the second engagement piece connected to the leading edge of the side wall of the other container inward. Partially fixed to release other parts and correspond to the first release engagement part That is, a configuration in which the components are formed is adopted. The paperboard container constructed as described above is rotated inward about the folding line so that the upper container and the lower container are overlapped with each other. The free engagement portion and the second free engagement portion are engaged with each other, and the paperboard container is closed. At this time, since the outward force is applied to the first release engagement portion together with the first engagement piece, the locking function is strengthened. Further, when the load of the product stored inside is applied to the side wall at the position opposite to the bent curve, the side wall is pushed outward, and the first free engaging portion and the second free engaging portion are pushed out. Are more closely fitted and strongly engaged. [0013] The side wall having the first engagement piece with the first free engagement portion is lightly pushed inward, or the second engagement piece with the second free engagement portion is formed. When the side wall is slightly pulled out outward, the engagement between the first free engaging portion and the second free engaging portion is released. In this state, when the paperboard container is rotated outward about the folding curve, the paperboard container is opened. DESCRIPTION OF THE PREFERRED EMBODIMENTS The paperboard container shown in FIG. 1 has an upper container 1 having a downward recess and a lower container 2 having an upward recess connected in an openable and closable manner. Assembled from. As shown in FIG. 2, a blank 1a forming the upper container 1 and a blank 2 forming the lower container 2
a are connected to each other via a folding curve 3. In the blank 1a, side walls 6a and 6b are provided on both sides of the top plate 4 via fold lines 5, and end plates 8 are provided on both ends of the top plate 4 via fold lines 7, respectively. 6a,
A bent piece 9 is attached to both ends of 6b so as to be overlapped and fixed on the end plate 8. On the other hand, in the blank 2a, side walls 13a and 13b are provided on both sides of a bottom plate 11 via fold lines 12, and end plates 8 are provided on both ends of the bottom plate 11 via fold lines 7, respectively. Folded pieces 9 are attached to both ends of 13a and 13b so as to be overlapped and fixed on the end plate 8. Further, in this embodiment, a first engaging piece 15 is extended through a fold line 14 at a leading edge of a side wall 13a of the lower container 2 at a position facing the fold curve 3. A folded line 16 is provided at the tip of the first engagement piece 15. On the other hand, a second engaging piece 18 is connected to the leading edge of the side wall 6 a of the upper container 1 facing the folding curve 3 via a folding line 17. Further, in this embodiment, a flange 19 is provided at the tip of each end plate 8. By the flange 19, when the upper container 1 and the lower container 2 assembled as described later are overlapped, the end plate 8 of one container enters the inside of the end plate 8 of the other container, and the paperboard Deformation of the container can be prevented. The blank shown in FIG. 2 is assembled as follows. First, the folded line 16 is folded outward, that is, toward the back side of the paper surface, and a portion indicated by reference numeral 21 is glued to form a fixed portion. Reference). The fold line 17 is folded inward, that is, toward the front side of the paper surface, and the portion indicated by reference numeral 23 is glued to form a fixed portion. Is formed corresponding to the second release engagement portion 24 (see FIG. 1). The first free engaging portion 22 and the second free engaging portion 24 are formed by folding and partially fixing the first engaging piece 15 and the second engaging piece 18 so that the first and second engaging pieces 15 and 18 are partially fixed. Due to the repulsive force, other parts that are not fixed are loosely formed. Next, the folding curve 3 is once bent outward, and the side walls 6a, 6b, 1
When the 3a, 13b and each end plate 8 are erected, and the bent pieces 9 are fixed to the inner surface of each end plate 8, respectively, the paperboard container is completed. A product is stored in the lower container 2, and the upper container 1 is stacked by rotating inward about the folding curve 3 so that the top plate 4 and the bottom plate 11 are sandwiched. . In this case, as shown in FIG. 3, the first release engagement portion 22 and the second release engagement portion 24 are engaged with each other, and the upper container 1 and the lower container 2 are overlapped. Will be closed. At this time, since the outward force is applied to the first release engaging portion 22 together with the first engaging piece 15, the locking function is strengthened. In this embodiment, each of the end plates 8 of the upper container 1 and the lower container 2 has a fan shape, and is provided at both ends of the side walls 6a, 6b, 13a, 13b. By fixing the piece 9, the opening surface becomes the top plate 4 and the bottom plate 11.
Each side wall 6a, 6b, 13a, 13
b are inclined outward. Therefore, as described above, the upper container 1 and the lower container 2
When the first engagement piece 1 is locked, the fold line 14 is bent and the first engagement piece 15 is inclined inward.
A repulsive force is exerted on the outer surface 5 to move outward, and the locking function is further strengthened, which is preferable. Further, when the load of the product is applied to the side wall 6a of the upper container 1 and the side wall 13a of the lower container 2 which are located opposite to the folding curve 3, the side wall 6a and the side wall 13a are pushed out. The first free engaging portion 22 and the second free engaging portion 24 are more deeply fitted and strongly engaged. When opening the paperboard container, the side wall 13a having the first engagement piece 15 having the first free engagement portion 22 may be gently pushed inward.
Alternatively, the side wall 6a having the second engagement piece 18 on which the second free engagement portion 24 is formed is lightly pulled outward. With this arrangement, the engagement between the first free engaging portion 22 and the second free engaging portion 24 is released, and the paperboard container can be easily opened. It should be noted that the upper container 1 located at the position opposite to the folding curve 3
The first engagement piece 15 on the side wall 6a of the lower container 2 and the side wall 13a of the lower container 2.
Even if the second engagement piece 18 is provided on the second member and the first free engagement portion 22 and the second free engagement portion 24 are respectively formed, a paperboard container exhibiting the same operation can be obtained. The first engagement piece 15 and the second engagement piece 18
By providing the fixing portions 21 and 23 at each of the three ends at both ends and the center, the first free engaging portion 22 and the second free engaging portion 24 sandwiched between the fixing portions 21 and 23 are respectively set at required intervals. It can also be formed in two places. Alternatively, the first engagement piece 15 and the second engagement piece 1
The fixing portions 21 and 23 may be provided only at the central portion of 8 and the first free engaging portion 22 and the second free engaging portion 24 may be formed at both ends. Further, it is sufficient that the first free engaging portion 22 and the second free engaging portion 24 are provided at corresponding positions, and the positions of the fixing portions 21 and 23 are determined by the upper container 1 and the lower container 2. It does not matter if it is slightly off. As described above, in the paperboard container according to the present invention, when the upper container and the lower container are overlapped and sandwiched, the first free engaging portion and the second free engaging portion Are engaged with each other, and the side wall having the first engagement piece is pushed inward, or the side wall having the second engagement piece is pulled out outward, so that the first free engagement portion and the second Since the engagement with the loose engagement portion is released, opening and closing is extremely easy. Further, when a load of a product housed inside is applied, the side wall is pushed outward, so that the engagement between the first free engaging portion and the second free engaging portion is further strengthened. An excellent lock function can be provided. Further, since the engagement mechanism is present inside one of the side walls, the engagement mechanism is not visible from the outside, and a beautiful paperboard container can be provided. In addition, the first disengagement portion and the second disengagement portion constituting the engagement mechanism are formed by folding back the tip of the side wall at the position opposite to the folding curve, and being partially fixed. Therefore, it is possible to provide a paperboard container that is easy to manufacture and suitable for mass production.

[Brief description of the drawings] FIG. 1 is a perspective view of an embodiment in an opened state. FIG. 2 is a development view of the above. FIG. 3 is a vertical sectional side view of the above-mentioned closed state. FIG. 4 is a perspective view of a conventional example in an opened state. [Explanation of symbols] 1, 41 Upper container 1a, 2a blank 2,42 Lower container 3,43 folding curve 4 Top plate 5, 7, 12, 14 fold line 6a, 6b, 13a, 13b, 44, 47 Side wall 8 End plate 9,45 bent piece 11 Bottom plate 15 First engagement piece 16, 17 Return line 18 Second engagement piece 19 Flange 21, 23 fixing part 22 First disengagement part 24 Second disengagement part 46 Engagement tongue 48 Slit for engagement

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 54-109729 (JP, U) JP-A 6-6231 (JP, U) JP-A 63-32123 (JP, U) Registered utility model 358409 ( JP, Z2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 5/00 B65D 5/06 B65D 5/66

Claims (1)

(57) [Claims 1] An upper container having a downward recess and a lower container having an upward recess are openably and closably connected via a folding curve, and the folding curves are opposed to each other. In a paperboard container in which side walls of the upper container and the lower container at positions are engaged with each other by an engagement mechanism, the engagement mechanism is constituted by a first free engagement portion and a second free engagement portion. The first free engaging portion, the distal end of the first engaging piece extending to the distal end edge of the side wall of one of the upper and lower containers, by turning back outward and partially fixing, the other portion The other part is formed by folding back the second engagement piece, and partially fixing the second engagement piece connected to the tip edge of the side wall of the other container to the inside. And a paperboard container formed to correspond to the first release engagement portion.