JPH04128264U - Locking structure at the bottom of the container - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] To provide a locking structure for the bottom of a container that exhibits high strength against both tensile force and pressing force. [Structure] A flap hole 26 is formed by providing a U-shaped cut line 24 near the outer edge of the bottom plate portion 14 in the bottom plate portions 12 and 14 that form a container bottom by engaging the two flap portions, and a bottom plate. and a protrusion 34 formed at a portion of the outer edge of the portion 12 corresponding to the flap hole 26,
A locking piece 38 with a dimension larger than the width of the flap hole 26 is formed on the projection piece 34 by the cut line 36, and when the bottom plate parts 12 and 14 are butted together during assembly, the locking piece 38 is pushed into the flap hole 26 and the bottom plate part 12 and 14, the inner ends of both side edges of the protruding piece 34 on the bottom plate portion 12 form a cut line 48 extending inward from the outer edge of the bottom plate portion that engages with the outer edge of the bottom plate portion 14. During assembly, the outer edge of the bottom plate portion 14 was inserted into the cut lines 48 on both side edges of the projection piece 34 and frictionally engaged with the bottom plate portion 12.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention provides a bottom part of a container in which the bottom part is formed by engaging two flap parts. Regarding locking structure.

0002

[Conventional technology]

Conventionally, containers of the above type were used as multi-packs, which store and package multiple identical products. It is widely used in so-called integrated packaging bodies called Various forms are also used.

0003 Representative examples of multipacks of the above type are shown in FIGS. 4 to 6. blank Although not shown in its entirety, the plate 10 is shown in FIG. 4 in a state just before butting engagement. Certain bottom plate portions 12, 14 are shown. These bottom plate parts 12 and 14 are respectively The side wall portions 20, 22 and the top plate portion (not shown in FIG. 4) are connected via the fold lines 16, 18. (not shown at 32 in FIG. 5).

0004 Near the outer edge of one bottom plate portion 12, there is a substantially inward U-shaped cut line 24. This cut line 24 constitutes a flap hole 26. In addition, this The outer edge of the bottom plate portion 12 is uneven, and extends from the outer edge corresponding to the recess 28. A partition plate portion (indicated by 30 in FIG. 5) is folded inside.

[0005] The outer edge of the other bottom plate portion 14 also has an uneven shape, and the protruding portion corresponding to the convex portion 34 has a substantially spade shaped portion having a dimension larger than the width of the flap hole 26. A shaped cut line 36 is formed, and this constitutes a locking piece 38. Locking piece The inner end of 38 is connected to the bottom plate portion 14 via a fold line 40.

[0006] These bottom plate portions 12 and 14 are protruded so that the outer edge of the bottom plate portion 14 is on the outside. After aligning and engaging, push the locking piece 38 into the corresponding flap hole 26. As can be seen from FIGS. 5 and 6, the side part of the locking piece 38 is aligned with the flap hole 26. It engages with the inner surface of the side edge to prevent separation of the bottom plate portions 12 and 14, and also to open the flap hole 26. The constituting flap 28 engages with the locking piece 38 to prevent it from slipping out. It has become.

[0007]

[Problem that the idea aims to solve]

In such a conventional configuration, the two bottom plate portions 12, 14 are provided with a locking piece as described above. 38 and the engagement of the flap hole with the flap 28 and the flap hole on the side of the locking piece 38 By engaging with the side edges of 26, it is strong against the pulling force that tries to separate them from each other. Those who resist, but press the bottom plate parts against each other when they take out some of the stored items. In the case of force in the direction of the This has the disadvantage that the engagement may come off.

[0008] This invention was devised in view of these conventional problems, and its purpose is to Not only is it strong against force, but it also shows strong strength against pressing force and is easy to engage. An object of the present invention is to provide a locking structure for the bottom of a container that prevents it from coming off.

[0009]

[Means to solve the problem]

In order to achieve the above object, the present invention connects two flap parts of a blank board to each other. Bottom plate portions that engage to form a container bottom, one of the bottom plate portions; By providing an almost inward U-shaped cut line near the outer edge of the The formed flap hole and the outer edge of the other bottom plate portion correspond to the flap hole. a protrusion formed in the flap hole, and the protrusion has a width larger than the width of the flap hole. A locking piece having a section of dimension is formed by a score line, and when assembled, the said bottom plate When the parts are butted together, the locking piece is pushed into the flap hole. Therefore, in the structure that locks the bottom plate portion, the protrusion on the one bottom plate portion This one bottom plate portion in which the inner ends of both side edges butt and engage with the outer edges of the other bottom plate portion. It has a cut line that extends inward from the outer edge of the other bottom plate when assembled. The outer edges of the protrusions are inserted into the cut lines on both sides of the protruding piece and connected to the one bottom plate part. A locking structure at the bottom of a container characterized by partially overlapping and frictionally engaging the structure. I will provide a.

0010

[Effect]

According to the present invention, the locking mechanism is used to hold the bottom plate portions in a butt and engaged state with each other. The engagement of the piece with the flap of the flap hole and the engagement of the side of the locking piece with the side edge of the flap hole. In addition to the mating, the outer edge of one bottom plate portion is inserted into the outer edge of the other bottom plate portion. This creates a frictional engagement and provides sufficient strength against pressing force.

[0011]

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 1 to 3 of the accompanying drawings. This example shows the case where it is applied to the bottom locking structure of a multi-pack, and is shown in Fig. 4. In structures that are almost the same as the conventional structure shown in Figure 6, the same reference numerals are used for the same parts. This will be explained below. As shown in the exploded view in Figure 1, a piece of paper bracket is used to assemble the container. The link plate 10A has bottoms at both ends that engage with each other to form a container bottom when assembled. Plate portions 12, 14 and inner edges of each bottom plate portion 12, 14 through fold lines 16, 18. The connecting side wall portions 20 and 22 and the opposite edges of these side wall portions 20 and 22 are connected to a polygonal line 3. and a top plate portion 32 connected to each other via 2A, and one of the bottom plate portions. Near the outer edge of the uneven shape of the bottom plate portion 14 of A flap hole 26 is formed by the U-shaped cut line 24 in the direction, and the other bottom plate is A convex portion on the outer edge of the uneven shape of the portion 12 corresponding to the position of the flap hole 26 is a protrusion. A piece 34 is formed. Each protrusion 34 is provided with a substantially spade-shaped cut line 36. A locking piece 38 is formed, and this locking piece 38 is larger than the width of the flap hole 26. Of course, it has a portion with a critical dimension.

0012 In addition, a partition plate portion 30 (see FIG. 3) is provided at the outer edge of the bottom plate portion 12 in its concave portion. The flaps that become 46 inwardly. Furthermore, this bent portion is provided on both side edges of each projecting piece 34. A score line 48 is provided extending inward from line 46 and along each side edge.

[0013] In addition, as is well known, the top plate portion 32 has a place where you can insert your finger in order to lift the container. A pair of holes 42 are formed by a score line 44 so that the holes 42 can be inserted into each other.

[0014] In this configuration, as shown in FIGS. 2 and 3, the bottom plate portions 12 and 14 are When mating and engaging, first align the outer edge convex portion of the bottom plate portion 14 with the corresponding bottom plate portion 12. Insert the protruding piece 34 under the protruding piece 34, and then insert the outer edge recess of the bottom plate part 14 into the protruding piece of the bottom plate part 12. 34 into the cut line 48 along the side edge of the bottom plate part 14 to partially cut the outer edge of the bottom plate part 14 The outer edge of the bottom plate portion 12 is overlapped with the outer edge of the bottom plate portion 12. As a result, the bottom plate portion 12 and the bottom plate portion The ends of 14 are frictionally engaged with each other and have strong resistance against pressing force. So After that, push the locking piece 38 of each protruding piece 34 into the corresponding flap hole 26 to close the flap. The assembly is completed by engaging the flap 28 of the hole 26. Of course the pulling force The engagement between the locking piece 38 of each protruding piece 34 and the flap hole 26 and flap 28 is It shows resistance depending on the situation. The partition plate portion 30 is shown in FIG. 2 when assembled. As in, it rises from the bottom inner surface of the container.

[0015] In addition, in this example, the present invention is applied to the bottom locking of a container called a so-called multi-pack. Although the case where it is applied to the structure is shown, the case is not limited to this, and in general, the case where the flaps are engaged with each other is used. Needless to say, it can be applied to the bottom locking structure of containers where the bottom is .

[0016]

[Effect of the idea]

As explained in detail above, according to the present invention, the locking pieces of each protrusion are removed during assembly. Engages with the flap hole and its flaps to resist pulling force and push force Also, strong resistance is provided by the insertion engagement of the outer edge parts of the bottom plate parts. Containers with this kind of bottom locking structure can withstand tensile forces and push-in. It also becomes strong in force.

[Brief explanation of drawings]

FIG. 1 is a fragmentary developed plan view showing an embodiment in which the present invention is applied to a multipack.

FIG. 2 is a perspective view of the embodiment shown in FIG. 1 in an assembled state;

FIG. 3 is a bottom view of the embodiment shown in FIG. 1 in an assembled state;

FIG. 4 is a bottom view of the conventional configuration just before the bottom is assembled.

FIG. 5 is a perspective view of a conventional example in an assembled state.

FIG. 6 is a bottom view of the conventional example in an assembled state.

[Explanation of symbols]

10,10A blank board 12, 14 Bottom plate part 20, 22 Side wall part 24, 36 Cut line 26 Flap hole 32 Top plate part 34 Projection piece 38 Locking piece 48 Cut line

Claims (1)

[Scope of utility model registration request] 1. A bottom plate portion that forms a container bottom by mutually engaging two flap portions of a blank plate, the bottom plate portion having a substantially inward U-shape near the outer edge of one of the bottom plate portions. a flap hole formed by providing a cut line in the shape of a shape, and a protrusion formed at a portion of the outer edge of the other bottom plate portion corresponding to the flap hole,
A locking piece having a portion larger than the width of the flap hole is formed on the projecting piece by a cut line, and the locking piece is pushed into the flap hole when the bottom plate parts are butted together during assembly. In the structure for locking the bottom plate portions, the inner ends of both side edges of the protrusion on the one bottom plate portion are inwardly than the outer edge of the one bottom plate portion that butts and engages with the outer edge of the other bottom plate portion. The outer edge of the other bottom plate portion is inserted into the cut lines on both side edges of the projecting piece and partially overlaps and frictionally engages with the one bottom plate portion when assembled. A locking structure at the bottom of the container.