JP3223745U - Packaging container - Google Patents

Abstract

An object of the present invention is to provide a packaging container that can be stacked up and down in a stable state even if the upper part of the container is not flat, and that can hold the assembled shape even when stacked. A packaging container 11 for folding and assembling a sheet material, comprising a plurality of side plates 21a, 21b, 22a, 22b having a polygonal cylindrical shape, an upper side and a lower side opening 20; The lid 30 includes a convex lid 30 that swells upward that closes the upper opening, and a concave bottom 40 that substantially closes the shape of the lid 30 that closes the lower opening of the side portion 20. The bottom portion 40 is fitted and can be stacked in the vertical direction. [Selection] Figure 2

Description

  The present invention relates to a packaging container, and more particularly, to a packaging container having a function of stacking in a vertical direction in a stable state even when a container having a non-flat upper portion is formed.

  Conventionally, a semi-cylindrical cylindrical paper box is widely known as a packaging container for packaging articles such as merchandise. Such a paper box has a so-called bowl shape, and forms a semi-cylindrical shape with a bottom plate provided in the axial direction of the cylinder and a side plate bent in an arc shape from the bottom plate, and both end portions of the cylindrical body are formed. A lid for covering is provided (for example, see Patent Document 1).

Utility Model Registration No. 3026472

  However, the cylindrical paper box of Patent Document 1 has a semi-cylindrical shape that is not flat at the top, but the bottom plate is flat, so that it becomes extremely unstable when stacked in the vertical direction. In addition, there is a problem that the semi-cylindrical shape is easily crushed.

  The present invention has been made to solve the above problems. An object of the present invention is to provide a packaging container that can be stacked in a vertical direction in a stable state even if the upper part of the container is not flat, and can hold the assembled shape even when stacked.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

  In the first device, a packaging container that folds and assembles a sheet material, which is formed into a polygonal cylindrical shape by a plurality of side plates, and closes the side part that opens upward and downward, and the opening above the side part. A convex lid portion that bulges upward, and a concave bottom portion that substantially closes the shape of the lid portion, which closes the opening below the side portion, and the bottom portion fits in the lid portion in the vertical direction. It is a container for packaging characterized by enabling stacking.

  The second device is the first device, wherein the cover part includes a cover plate, the cover plate is connected to an upper edge of the side plate, and is curved so as to swell upward. A packaging container characterized in that a lid is formed.

  In a third device, according to the second device, the side portion includes a first side plate portion including a pair of side plates facing one side, and a second side plate portion including a pair of side plates facing the other side. The lid plate facing the first side plate portion and / or the second side plate portion is connected to the upper side edge of the first side plate portion and / or the second side plate portion. A packaging container.

  The fourth device is the second or third device, wherein the lid plate has an upper edge of the side plate as a base end portion, and is closer to a convex top portion than a width of the base end portion. A packaging container characterized by narrowing.

  The fifth device is any one of the first to fourth devices, wherein the bottom portion includes a bottom plate, and the bent portion having a curved shape that bulges upward is formed on the lower edge of the side plate. The packaging container is characterized in that a bottom plate is continuously provided and the bottom plate is curved to form the bottom portion.

  According to a sixth aspect, in the fifth aspect, the side portion includes a first side plate portion including a pair of side plates facing one side, and a second side plate portion including a pair of side plates facing the other side. The bottom plate facing the bottom side edge of the first side plate part and / or the second side plate part, and the bottom plates are locked together to form the bottom part. Container.

    According to the present invention, although it is a very simple configuration, even if the upper part of the container is not flat, it can be stacked up and down in a stable state, and the shape of the assembled packaging container can be maintained even when stacked. .

The top view of the expansion body 1 of the container 11 for packaging of this invention. The perspective view in the middle of the assembly of the packaging container 11 of this invention. The perspective view of the state which closed the lower opening of the container 11 for packaging of this invention. The bottom view of the container 11 for packaging of this invention. The perspective view of the state which closed the upper opening of the container 11 for packaging of this invention. The side view of the container 11 for packaging of this invention. The front view of the container 11 for packaging of this invention. The side view of the state which piled up the container 11 for packaging of this invention. The front view of the state which accumulated the container 11 for packaging of this invention. The packaging container which concerns on other embodiment of this invention.

  Next, an embodiment of the present invention will be described with reference to FIGS.

The packaging container 11 of the present invention described below is used as a package for articles such as food.
The packaging container 11 is made of paperboard, but can be made of other sheet materials such as cardboard sheets and plastic sheets.

The packaging container 11 is formed by assembling the development body 1 shown in FIG.
In the packaging container 11, the lid 30 closes the opening above the side portion 20, and the bottom 40 closes the opening below the side portion 20.

  First, the configuration of the packaging container 11 will be described according to the developed body 1 shown in FIG. The broken line of the expansion body 1 indicates a bent portion.

The side portion of the packaging container 11 includes a first side plate portion 21 and a second side plate portion 22.
The first side plate portion 21 includes a side plate 21a and a side plate 21b that face each other in the assembled state.
The second side plate portion 22 includes a side plate 22a and a side plate 22b that face each other in the assembled state.
Specifically, the side plate 22a is connected to the right side of the side plate 21a via a bent portion, the side plate 21b is connected to the right side of the side plate 22a via the bent portion, and the side plate 22b is connected to the right side of the side plate 21b via the bent portion. Has been established. A connection plate 23 is continuously provided on the left side of the side plate 21a via a bent portion.

The lid portion 30 of the packaging container 11 includes a first lid plate portion 31 and a second lid plate portion 32.
The first cover plate portion 31 includes a cover plate 31a and a cover plate 31b that face each other in the assembled state.
The second lid plate portion 32 includes a lid plate 32a and a lid plate 32b that face each other in the assembled state.
Specifically, the upper edge of the side plate 21a is used as the base end portion, the lid plate 31a is used as the base end portion, the upper end edge of the side plate 22a is used as the base end portion, the cover plate 32a is connected via the bent portion, and the upper side of the side plate 21b. The lid plate 31b is connected to the base plate 31b through the bent portion with the upper edge of the side plate 22b as the base end portion.
In addition, the bending part is not provided between the side plate 21a and the cover plate 31a, and between the side plate 21b and the cover plate 31b.
The cover plate 31a is narrower than the base end as it goes upward. A locking flap 33a is formed at the upper edge by cutting.
The cover plate 31b is narrower than the base end portion as it goes upward. A locking flap 33b is formed at the upper edge by cutting.
The cover plate 32a and the cover plate 32b are formed in a substantially trapezoidal shape.
In the assembled state, the upper opening is closed by the locking of the locking flap 33a and the locking flap 33b, and is released when the locking is released.

The bottom portion 40 of the packaging container 11 includes a first bottom plate portion 41 and a second bottom plate portion 42.
The first bottom plate portion 41 includes a bottom plate 41a and a bottom plate 41b that face each other in an assembled state.
The second bottom plate portion 42 includes a bottom plate 42a and a bottom plate 42b that face each other in an assembled state.
Specifically, the bottom plate 41a is connected to the lower edge of the side plate 21a via a bent portion that bulges upward and curves, and the bent portion that bulges and curves upward to the lower edge of the side plate 22a. The bottom plate 42a is bent through a bent portion that bulges upward at the lower edge of the side plate 21b, and the bottom plate 41b is bent through a bent portion that bulges upward at the lower edge of the side plate 22b. 42b is continuously provided.
Locking flaps 43a are formed on the left and right end sides of the lower edge of the bottom plate 41a. A locking groove 43aa is formed at the center.
A locking flap 43b is formed at the center of the lower edge of the bottom plate 41b. A locking groove 43bb is formed on the left and right sides of the locking flap 43b.
A locking flap 44a is formed on the right end side of the lower edge of the bottom plate 42a.
At the lower edge of the bottom plate 42b, a locking flap 44b is formed on the left end side.
In the assembled state, the bottom plate 41a, the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b can be combined and locked to close the opening below the side portion 20.

  Next, assembly of the packaging container 11 will be described with reference to FIGS.

First, the assembly of the side part 20 will be described.
The side portion 20 bends the side plate 21a, the side plate 21b, the side plate 22a, the side plate 22b, and the connection plate 23 along the bent portion to fix the inner surface of the side plate 22b and the outer surface of the connection plate 23, as shown in FIG. As shown, it is formed into a square cylinder. In this state, the upper and lower ends of the side portion 20 form an opening.

Next, the assembly of the bottom 40 will be described.
The bottom portion 40 of the packaging container 11 is bent to the center side of the cylindrical side portion 20 by bending the bottom plate 41a, the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b along the bent portion that bulges upward and locks the bottom plate 41b. The groove 43bb and the locking flap 44a of the bottom plate 42a are locked, the locking groove 43bb of the bottom plate 41b and the locking flap 44b of the bottom plate 42b are locked, and the locking groove 43bb of the bottom plate 41b and the locking flap 43a of the bottom plate 41a. And the locking flap 43b of the bottom plate 41b is locked in the locking groove 43aa of the bottom plate 41a.
In this state, as shown in FIGS. 3 and 4, the bottom plate 41a, the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b are curved along a bent portion that bulges upward and curves, and the bottom portion 40 has a concave shape. , The opening below the side 20 is closed.
When placed on a flat surface in this state, a corner A between the bottom plate 42a and the bottom plate 41a, a corner B between the bottom plate 41a and the bottom plate 42b, and a corner C between the bottom plate 42b and the bottom plate 41b. The corner portion D between the bottom plate 41b and the bottom plate 42a is in contact with the flat surface, but the side portion between the corner portion A and the corner portion B, the side portion between the corner portion B and the corner portion C, and the corner portion. The side part between C and the corner part D and the side part between the corner part A and the corner part D do not touch the flat surface.
The bent portion has a curved size that dents the bottom portion 20 so as to substantially follow a convex shape that swells above an assembled lid portion 30 described later when the packaging containers 11 are stacked upward.

Next, assembly of the lid part 30 will be described.
First, the lid portion 30 bends the lid plate 32a and the lid plate 32b substantially horizontally inward of the side portion 20 along the bent portion. Then, if the lid plate 31a and the lid plate 31b are curved inward of the side portion 20 and the locking flap 33a and the locking flap 33b at the tip are locked, the lid portion 30 swells upward as shown in FIG. It becomes a convex shape and closes the opening above the side portion 20.

The lid portion 30 of the packaging container 11 in the closed state assembled in this way has a first lid plate portion 31 (the lid plate 31a and the lid plate 31b) that is curved and is upward in the side view shown in FIG. It has a bulging convex shape.
Further, the bottom portion 40 has a second bottom plate portion 42 (a bottom plate 42a and a bottom plate 42b) that is curved, and has a concave shape in a side view shown in FIG.

Further, the lid portion 30 of the packaging container 11 in the closed lid state assembled in this way is such that the first lid plate portion 31 (the lid plate 31a and the lid plate 31b) moves from the base end portion toward the convex top portion. The width is narrow, and it is a convex shape that swells upward in the front view shown in FIG.
Moreover, the bottom part 40 has the 1st bottom board part 41 (bottom board 41a, bottom board 41b) curved, and is concave shape also in the front view shown in FIG.

Next, the stacking of the packaging containers 11 will be described.
As described above, the packaging container 11 that is assembled and closed has a convex shape in which the lid 30 swells upward, and has a concave shape that is formed so that the bottom 40 substantially follows the shape of the lid 30. .
Therefore, the convex shape of the lid portion 30 can be fitted into the concave shape of the bottom portion 40 and can be stably stacked in the vertical direction.
FIG. 8 is a side view when three packaging containers 11 are stacked, and FIG. 9 is a front view when three packaging containers 11 are stacked.

  Thus, the packaging container 11 according to the present embodiment is a packaging container 11 that is assembled by folding the unfolded body 1 made of a sheet material, and is formed into a square cylindrical shape by the plurality of side plates 21a, side plates 21b, side plates 22a, and side plates 22b. None, the side 20 that opens upward and downward, the upper opening of the side 20, the convex-shaped lid 30 that swells upward, and the opening of the lid 30 that closes the opening below the side 20 The packaging container includes a concave bottom portion 40 substantially conforming to the shape, and the bottom portion 40 fits into the lid portion 30 and can be stacked in the vertical direction.

  According to the present invention, even if the upper part of the container is not flat and has a convex shape that swells upward, the bottom part 40 has a concave shape substantially along the lid part 30, so that the bottom part 40 fits into the lid part 30 and is stable. In this state, the lid 30 can be stacked in the vertical direction, and even when stacked, the assembled convex shape of the lid 30 can be held without being crushed.

  Further, the lid portion 30 of the packaging container 11 according to the present embodiment has a lid plate 31a connected to the upper edge of the side plate 21a, a lid plate 31b connected to the upper edge of the side plate 21b, and the side plate 22a. The lid plate 32a is connected to the upper edge of the side plate, the lid plate 32b is connected to the upper edge of the side plate 22b, and the lid plate 31a and the lid plate 31b are curved so as to bulge upward. Is a packaging container.

  For this reason, in addition to said effect, it can be set as the curved convex shape which expands a cover part upwards by simple assembly operation.

  Further, the side portion 20 of the packaging container 11 according to the present embodiment includes a first side plate portion 21 including a pair of side plates 21a and 21b facing one side, and a second side plate including a pair of side plates 22a and 22b facing the other side. The cover plate 31a and the cover plate 31b, and the cover plate 32a and the cover plate 32b are connected to the upper edges of the first side plate portion 21 and the second side plate portion 22, and the cover plate 31a. And a lid plate 31b to form a lid 30.

  For this reason, in addition to said effect, it can be set as the curved convex shape which bulges a cover part upwards by latching of the cover board 31a and the cover board 31b.

  Further, the lid plate 31a of the packaging container 11 according to the present embodiment is narrower than the width of the base end portion as it goes to the top of the convex shape with the upper edge of the side plate 21a as the base end portion, and the lid plate 31b The packaging container is narrower than the width of the base end portion toward the top of the convex shape with the upper edge of 21b as the base end portion.

  For this reason, in addition to the above effects, the packaging container 11 is viewed from the side plate 21b side (front) or the side plate 21a side (rear) by an edge narrower than the width of the base end portion of the cover plate 31a and the cover plate 31b. Even in this case, the lid portion 30 may have a convex shape that swells upward.

  In addition, the bottom portion 40 of the packaging container 11 according to the present embodiment includes a bottom plate 41a, a bottom plate 41b, a bottom plate 42a, and a bottom plate 42b, and a curved bent portion that swells upward at the lower edge of the side plate 21a. A bottom plate 41a is continuously provided, a bottom plate 41b is continuously provided at a lower edge of the side plate 21b via a curved bent portion that swells upward, and a curved shape that is swelled upward at a lower edge of the side plate 22a. The bottom plate 42a is continuously provided through the bent portion, and the bottom plate 42b is continuously provided at the lower edge of the side plate 22b through the curved bent portion that swells upward, and the bottom plate 41a, the bottom plate 41b, the bottom plate 42a, This is a packaging container that forms the bottom 40 by curving the bottom plate 42b.

  For this reason, in addition to the above effect, the bottom portion 40 can be formed into a concave shape that substantially follows the convex shape that swells above the lid portion 30 by a simple assembly operation.

  Further, the bottom portion 40 of the packaging container 11 according to the present embodiment has a side portion 20 from a first side plate portion 21 composed of a pair of side plates 21a and 21b facing one side and a pair of side plates 22a and 22b facing the other side. The bottom plate 41a, the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b are connected to the lower edge of the first side plate portion 21 and the second side plate portion 22, and the bottom plate 41a, This is a packaging container in which the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b are respectively locked to form the bottom portion 40.

  Therefore, in addition to the above effects, the bottom plate 41a, the bottom plate 41b, the bottom plate 42a, and the bottom plate 42b are locked in a curved state, and the concave shape of the bottom portion 40 can be reliably held.

As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment.
For example, like the packaging container shown in FIG. 10, a lid plate 31a covering the entire upper opening from the upper edge of the side plate 21a may be continuously provided and curved into a convex shape that swells upward to form a lid portion. Further, the shape of the cover plate can be the same width as the base end portion.

  The technical scope of the present invention extends widely over the entire scope of technical ideas that are truly intended by the present invention, which will become apparent from the matters described in this specification and the drawings.

DESCRIPTION OF SYMBOLS 1 Unfolding body 11 Packaging container 20 Side 21 First side plate 21a, 21b Side plate 22 Second side plate 22a, 22b Side plate 23 Connection plate 30 Lid 31 First lid plate 31a, 31b Cover plate 32 Second lid Portions 32a and 32b Cover plates 33a and 33b Locking flap 40 Bottom 41 First bottom 41a and 41b Bottom plate 42 Second bottom 42a and 42b Bottom plate 43a Locking flap 43aa Locking groove 43b Locking flap 43bb Locking grooves 44a and 44b Stop flap A, B, C, D Corner

Claims (6)

A packaging container for folding and assembling a sheet material,
The side part which makes a polygonal cylinder shape by a plurality of side plates, and the upper part and the lower part open,
A convex lid that bulges upward, closing the opening above the side;
A concave bottom that substantially conforms to the shape of the lid, closing the opening below the side;
The packaging container is characterized in that the bottom part fits into the lid part and can be stacked in the vertical direction. The lid portion includes a lid plate,
2. The packaging container according to claim 1, wherein the lid plate is connected to an upper edge of the side plate and curved so as to swell upward to form the lid portion. The side portion includes a first side plate portion made of a pair of side plates facing one side, and a second side plate portion made of a pair of side plates facing the other side,
The lid plate facing the first side plate portion and / or the second side plate portion is provided continuously, and the lid portions are formed by locking the lid plates together. The packaging container according to claim 2.   4. The cover plate according to claim 2 or 3, wherein the lid plate is narrower than the width of the base end portion toward the top of the convex shape with the upper edge of the side plate as the base end portion. Packaging container. The bottom includes a bottom plate;
The bottom plate is formed by connecting the bottom plate to a lower edge of the side plate via a curved bent portion that swells upward, and the bottom plate is bent to form the bottom. The packaging container as described in any one of Claim 4. The side portion includes a first side plate portion made of a pair of side plates facing one side, and a second side plate portion made of a pair of side plates facing the other side,
The bottom plate is formed by connecting the bottom plates facing each other to the lower edge of the first side plate portion or / and the second side plate portion, and locking the bottom plates together. 5. A packaging container according to 5.

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