JPH0221367Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to a packaging box that has a double-plate structure and whose side panels can be opened and closed.

[Background technology]

In a typical packaging box, side panels are fixed to the four sides of the bottom panel so as to stand up, and these side panels are fixedly connected to each other to form a single box body. . With such a packaging box, it is difficult to take out items that are large enough to fit into the internal space, and when items are stacked, it is difficult to inspect the items on the bottom later. It is difficult to take it out.

Therefore, there is a device in which a part of the side plate portion is made into an openable/closed side plate portion.

This packaging box can be freely taken out by opening the opening/closing side panels, but conventional packaging boxes have no means for holding the opening/closing side panels in a closed state. Because it was not provided, not only was there an inconvenience that the opening/closing side plate part could open unexpectedly and the contents leaked out, but also the opening/closing side plate part was not connected to the adjacent fixed side plate part, making the box structurally unstable. I have a weak side.

[Purpose of invention]

In view of the above-mentioned disadvantages, the object of this invention is to provide a packaging box that does not allow the contents to protrude outside and has a strong box structure.

[Disclosure of invention]

In order to achieve the above object, the packaging box according to the invention is provided with side panels integrally provided on each side of the rectangular bottom panel to have a double panel structure by folding back the outer and inner walls. In the packaging box, the packaging box is made up of a fixed side plate part that stands up from the bottom plate part and is in a fixed state, and an opening/closing side plate part that can be opened and closed by raising and lowering with respect to the bottom plate part. The end portion is provided with an opening/closing guide piece that is slidably inserted between the inner and outer walls of the fixed side plate portion, and the outer wall portion of the fixed side plate portion is provided with an opening/closing guide piece formed at the end portion of the opening/closing side plate portion. It is characterized by being integrally provided with a locking tongue that can be freely inserted and removed between the inner and outer walls of the opening through the insertion opening and that holds the opening/closing side plate in a closed state in the inserted state. do.

This invention will be explained in detail below with reference to drawings showing embodiments thereof.

FIG. 1 shows an example of the packaging box according to this invention in a state after assembly. As shown in FIG. 2, this packaging box is formed by punching out a single blank sheet. A rectangular bottom plate part 1 is provided in the center, and four side plate parts are integrally formed on each side of this bottom plate part 1. These side plate portions consist of fixed side plate portions 2, 2 and opening/closing side plate portions 3, 3. Fixed side plate part 2
has an outer wall portion 5 extending outward via parallel folding lines 4, 4 of the bottom plate portion 1, and a slightly narrow width extending outward from the outer wall portion 5 via a strip-shaped folded piece 6. It has an inner wall portion 7. As shown in FIG. 3, in the fixed side plate part 2, the outer wall part 5 rises up as shown by arrow A and rises vertically from the bottom plate part 1, and the inner wall part 7 is folded back as shown by arrow B to form the outer wall. Part 5
They are arranged parallel to each other so as to leave a certain gap inside. In other words, it has a double plate structure. A fixing tongue piece 8 protrudes from the tip of the inner wall part 7, and this fixing tongue piece 8 fits into a fixing slit 9 formed on the outer peripheral edge of the bottom plate part 1, as shown in FIG. Therefore, the fixed side plate portion 2 is arranged upright.

In this way, the pair of fixed side plates 2, 2 are erected independently on two parallel sides of the bottom plate 1, and are opposed to each other.

The opening/closing side plate parts 3 are arranged on two other different parallel sides of the bottom plate part 1. As shown in FIG. 2, the opening/closing side plate part 3 integrally includes an outer wall part 15 and an inner wall part 17 forming a double plate structure, and the outer wall part 15 extends from the bottom plate part 1 via the folding line 4. , inner wall portion 17
is provided so as to extend from the outer wall portion 15 via the folded piece 16. The outer wall portion 15 is
As shown in FIG. 3, it can be opened and closed freely in both directions of arrows C and D around the folding line 4, together with the inner wall portion 17 which is folded back and overlapped with each other. The folded piece 16 includes:
As shown in FIG. 2, a pair of insertion ports 20 are formed on one opening/closing side plate 3 on the left and right sides, and on the other opening/closing side plate 3 at the center of the width thereof. There is one in each. An opening finger opening 21 is formed near the insertion opening 20 on the one-piece side, and as shown in FIG. A bent insertion tongue 24 protruding from the lid 23 is inserted into the lid 23. The open finger opening 21
The lid 23 can be easily opened by pulling out the insertion tongue piece 24 through the insertion hole, and the lid 23 is removed by pulling out the other pair of insertion tongue pieces 24, 24 from the insertion opening 20, and the top surface of the packaging box is completely opened. It is becoming more open to the public. An opening/closing guide piece 30 is provided on such opening/closing side plate portion 3.
is provided. As shown in FIG. 2, the opening/closing guide pieces 30 are provided extending through folding lines 4 on both sides of the outer wall 15 and on both sides of the inner wall 17, respectively. Each opening/closing guide piece 30 has a guide portion 31 formed in a fan shape with an angle E (45 degrees in the embodiment).
and a stopper portion 33 having a stopper surface 32 extending straight from the outer peripheral edge of the guide portion 31 in a tangential direction. The stop surface 32 forms an angle F (90 degrees in the embodiment) with respect to an angular reference line 34 shown on one side of the fan-shaped guide portion 31 for clarity. As shown in FIG. 3, such opening/closing guide pieces 30 are overlapped to fit each other by folding back and connecting to each opening/closing side plate part 3.
It protrudes inward from both sides of the packaging box in an L-shape. Each opening/closing guide piece 30 is inserted between the outer wall part 5 and the inner wall part 7 when the fixed side plate part 2 is folded back to form a double plate structure, and is inserted into the gap formed between them. built in so that it can slide along. Figure 4 shows the state after assembly, and the opening/closing side plate part 3 is
The sector-shaped guide portion 31 allows the angle E (in the example
45 degrees), but beyond that, a slight opening is allowed, and as the stopper surface 32 gradually comes into contact with the folded piece 6 at the upper end of the fixed side plate 2, it opens at a certain degree. is increasingly being stopped. Of course, stopper surface 32
If the opening/closing side plate part 3 is pushed open with a force above a certain level, the box can be pulled out of the fixed side plate part 2 due to the elasticity of the box. In order to maintain such an opening/closing side plate part 3 in a closed state, an insertion opening 36 is provided on the opening/closing side plate part 3, and a locking tongue piece 37 is provided on the fixed side plate part 2, respectively. Inlet 3
6 is formed by cutting out both corners of each outer wall portion 15 on the side of the folded piece 16. As shown in FIG. This insertion port 36 is formed by a vertically elongated slit, and when the opening/closing guide piece 30 is bent around the folding line 4 for the opening/closing guide piece 30, as shown in FIG. The end formed by 15 faces outward in the plane direction thereof. As shown in FIG. 5, this insertion port 36 is formed with a semicircular finger insertion hole 38 for removal.
A locking portion 39 corresponding to the lower end portion of the insertion port 36 is located further below the lower end of the insertion port 8 . As shown in FIG. 2, the locking tongue piece 37 is
It is integrally formed at both corners of the outer wall portion 5 of the fixed side plate portion 2. The corner of the outer wall portion 5 on the folded piece 6 side is provided with a base tongue piece 41 that is formed between a pair of punched lines 10 and 10 and is swingable around the folded line 4. The locking tongue piece 37 is integrally provided at the tip of the base tongue piece 41 via the folding line 4 . This locking tongue piece 37 is formed by punching out the opening/closing guide piece 30 of the fixed side plate part 2 via the punch line 10. The base tongue piece 41 is designed to be able to swing around the folding line 4, as shown by the two-dot chain line in FIG. 6, and the locking tongue piece 37 provided at its tip is connected to the insertion opening. It is designed to make it easier to get into 36. While the width of the base tongue piece 41 is the same as the length in the vertical direction of the insertion port 36, the locking tongue piece 37 has one side in the width direction protruding as a locking protrusion 42, so that it cannot be inserted. Slightly more than the mouth 36 (2 to 3 in the example)
mm) is getting wider.

As shown in FIG. 7, the locking tongue piece 37 is fitted between the double plates of the opening/closing side plate 3 through the insertion opening 36, thereby preventing the opening/closing side plate 3 from being opened unexpectedly. This prevents the contents from leaking out. Since the locking tongue piece 37 connects the opening/closing side plate part 3 and the fixed side plate part 2, the strength of the box body can also be increased. Note that the locking tongue piece 37 is slightly wider than the insertion opening 36, so it may be necessary to push it in slightly forcefully by elastic deformation of the mouth edge forming the insertion opening 36. Once inserted and inserted into the insertion port 36, the locking protrusion 42 is caught on the locking portion 39, and the locking tongue piece 37 cannot be easily removed.
When a certain force is applied to the locking tongue piece 37 by finger operation from the removal finger opening 38, the locking protrusion 42 overcomes the locking part 39 and comes off from the insertion hole 36, thereby causing the opening/closing side plate to close. Part 3 can now be opened as shown in FIG. Although one pair of opening/closing side plate portions 3 is provided, only one may be provided and the other may be used as the fixed side plate portion 2. Although the fixed side plate part 2 and the opening/closing side plate part 3 are arranged adjacent to each other, for example, the fixed side plate part 2 may be arranged in an L-shape in plan, and the opening/closing side plate part 3 may also be arranged in an L-shape in plan. The lid 23 is said to be a plug-in type and has an excellent appearance, but it may also have a U-shaped frame. Although the lid 23 is designed to be completely removable, one end may be fixed to the side plate portion. The opening/closing side plate portion 3 is guided by an opening/closing guide piece 30, but such a guiding means may not be provided in some cases.

[Effect of idea]

Since the packaging box according to this invention is constructed as described above, the opening/closing side panels do not open unexpectedly and the contents do not protrude when unnecessary, and the box structure is It has become possible to increase the strength of

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the packaging box according to this invention, Fig. 2 is a developed view of the packaging box, Fig. 3 is a perspective view showing the assembled state, and Fig. 4 is a perspective view showing an embodiment of the packaging box.
The figure is a perspective view showing the opening/closing side plate in an open state, Figure 5 is a perspective view from direction H in Figure 1, Figure 6 is a cross-sectional view taken along the - line in Figure 5, and Figure 7 is a locking tongue piece. FIG. 3 is a perspective view showing a state in which the device is about to be inserted into the insertion port. 1... Bottom plate part, 2... Fixed side plate part, 3... Opening/closing side plate part, 5, 15... Outer wall part, 7, 17... Inner wall part, 36... Insertion port, 37... Locking tongue piece .

Claims (1)

[Claims for Utility Model Registration] (1) On each side of the rectangular bottom plate, a side plate part is integrally provided with a double plate structure by folding back the outer wall part and the inner wall part, and these side plate parts are connected to the bottom plate part. In the packaging box, the packaging box is made up of a fixed side plate part that stands up from the bottom plate and is in a fixed state, and an opening/closing side plate part that opens and closes by tilting up and down with respect to the bottom plate part. , an opening/closing guide piece slidably inserted between the inner and outer walls of the fixed side plate part is provided, and an insert formed at an end of the opening/closing side plate part is provided on the outer wall part of the fixed side plate part. 1. A packaging box, characterized in that a locking tongue piece is integrally provided, which can be inserted into and pulled out between the inner and outer walls of the box through the opening, and which holds the opening/closing side plate part in a closed state in the inserted state. (2) The packaging box according to claim 1, wherein the locking tongue piece is provided at the tip of the base tongue piece formed by cutting out the end of the outer wall. (3) When the opening/closing side plate is opened at a certain angle, a part of the opening/closing guide piece comes into contact with the upper end of the fixed side plate to maintain the opening angle of the opening/closing side plate at the above angle. A packaging box according to claim 1 or 2 of the utility model registration claim. (4) The packaging box according to any one of claims 1 to 3, wherein the opening/closing side plate portion is formed by a pair of opposing side plate portions. (5) The packaging box according to any one of claims 1 to 4, wherein the upper end of the side plate portion is formed with an insertion opening into which the insertion tongue of the lid is inserted. (6) The packaging box according to claim 5 of the utility model registration claim, in which the insertion port is provided in the opening/closing side plate.