JP7444434B2 - packaging containers - Google Patents

Description

The present invention relates to a stackable packaging container, and specifically relates to a packaging container for storing food that is convenient for draining and drying.

When stackable packaging containers are stacked, the outer and inner walls of the stacked containers come into close contact with each other, making it difficult to drain and dry the stacked containers. For this purpose, as shown in FIG. 11, the containers must be turned over individually to drain water and dry, which requires a large space.

In order to solve this problem, a plurality of convex ribs were provided that protruded from the outer peripheral surface of the container body, and the ribs were formed in a vertically elongated shape with an increasing slope from the mouth edge of the container body toward the bottom, and were overlapped. In some cases, it has been proposed to create a gap using ribs to prevent the container peripheral wall from coming into close contact with each other.

Utility Model Publication No. 6-12330

In the above-mentioned conventional technology, a gap is obtained between the peripheral walls by the ribs, but in order to obtain a wide gap, it is necessary to increase the height of the ribs. Increasing the height of the ribs increases the height when stacked, which requires a large storage space.

The object of the present invention is to widen the gap between the inner and outer walls of stacked containers as much as possible while reducing the stacked height as much as possible.

This invention provides a packaging container that is stackable and whose opening has a contour shape in plan view in which the upper and lower containers fit into each other when rotated 90 degrees. Steps are provided, of which a pair of locking steps are formed at the intersection of a first imaginary straight line passing through the center point of the planar shape and the peripheral wall of the container, and the other pair of locking steps are formed at the intersection of the peripheral wall of the container. It is formed at the intersection of a second imaginary straight line passing through the center point and making 90 degrees with the straight line and the peripheral wall of the container, and each pair of locking steps are formed at the same depth position. By forming one pair of locking steps at a shallow position (close to the opening of the container) and forming the other pair of locking steps at a deep position (close to the bottom of the container), the above problem can be solved. This is to solve the problem.

The planar shape of the packaging container of the present invention may be circular, rectangular, or polygonal as long as the upper and lower containers fit together when rotated 90 degrees.
In the above, the pair of locking steps are formed at the intersection of the first imaginary straight line passing through the center point of the planar shape and the peripheral wall of the container, and the other pair of locking steps are formed at the center point of the planar shape. Specifically, the phrase "formed at the intersection of the peripheral wall of the container and a second imaginary straight line passing through and forming an angle of 90 degrees with the straight line" specifically means the embodiments illustrated in FIGS. 1 to 3.

FIG. 1 shows an example in which the planar shape is circular, and a pair of step portions A1 and A2 are formed at the intersection of the first imaginary straight line L1 passing through the center point M of the planar shape and the peripheral wall of the container, and the center point M A pair of stepped portions B1 and B2 are formed at the intersection of a second imaginary straight line L2 passing through and orthogonal to the imaginary straight line L1 and the peripheral wall of the container.
The depth positions of the stepped portions A1 and A2 are the same, and the depth positions of the stepped portions B1 and B2 are the same.

FIG. 2 shows an example in which the planar shape is octagonal, and a pair of stepped portions A1 and A2 are formed at the intersection of the virtual straight line L1 passing through the center point M of the planar shape and the peripheral wall of the container, and passing through the center point M. A pair of step portions B1 and B2 are formed at the intersection of a virtual straight line L2 perpendicular to the straight line L1 and the peripheral wall of the container.

FIG. 3 shows an example in which the planar shape is petal-like, and a pair of stepped portions A1 and A2 are formed at the intersection of the longest virtual straight line L1 passing through the center point M of the planar shape and the peripheral wall of the container, and the center point M A pair of step portions B1 and B2 are formed at the intersection of the circumferential wall of the container and an imaginary straight line L2 passing through and orthogonal to the straight line L1.

According to the second aspect of the invention, the first virtual straight line is the longest straight line passing through the center point of the planar shape. Although an imaginary straight line may be drawn as shown by the broken line in FIG. 3 and a stepped portion may be provided at the intersection of the imaginary straight line and the peripheral wall of the container, by making the longest straight line the imaginary straight line, the stacked state is stabilized.

In the invention of claim 3, the packaging container is square in plan view, and the locking step portions are provided at the four corners of the container peripheral wall. It is connected by.

In this invention, two pairs of locking steps are provided, each pair of locking steps are formed at the same depth position, one pair of locking steps are formed at a shallow position, and the other pair of locking steps are formed at a shallow position. The part is formed at a deep position. The planar shape of the container is such that the upper and lower containers fit together when rotated 90 degrees. Therefore, depending on the direction in which the containers are stacked, the step portions that are locked when stacked differ.

That is, when the upper and lower containers are stacked in the same direction, the stepped portions formed at deep positions engage with each other, and the upper and lower containers are stacked almost closely together.
On the other hand, when stacking containers are rotated 90 degrees and stacked on top of each other, the shallow step and the deep step are locked together, so the upper container is lifted from the lower container, and the upper and lower containers are stacked. A large gap forms between the side walls of the container. Therefore, if you leave it with the opening side facing down, water will drain and air will circulate, which will speed up drying.

In particular, in the configuration of claim 4, contact between the inner and outer walls of the upper and lower containers is avoided by the continuous step between adjacent locking steps, so that the draining and drying effects are improved.

An explanatory diagram of the position of the stepped portion in a circular container in plan view An explanatory diagram of the position of the step part in an octagonal container in plan view An explanatory diagram of the position of the stepped portion in a petal-shaped container in plan view Plan view of example Front view of example Side view of the embodiment Front view of the stacked state of the example Front view of the embodiment rotated 90 degrees and stacked Also a perspective view Cross-sectional view along the same diagonal line Perspective view of a conventional container when draining water

Examples of the present invention will be described below.

In a packaging container 1 that is square in plan view and has a taper formed on the outer surface of the peripheral wall so as to be stackable, the relationship between the first imaginary straight line L1, which is a diagonal passing through the center point M in plan view, and the peripheral wall 2 of the container 1 is A pair of stepped portions A1 and A2 (hereinafter sometimes collectively referred to as "stepped portions A") are provided at the corners of the peripheral wall 2, which are intersection points. Further, at the corner of the peripheral wall 2, which is the intersection of the second virtual straight line L2, which is a diagonal line that is orthogonal to the virtual straight line L1 and passes through the center point M, there is another pair of stepped portions B1, B2 (hereinafter sometimes collectively referred to as "stepped section B") is provided.

Each of the steps A1, A2, B1, and B2 is an upward step on the inner surface of the peripheral wall 2, and a downward step on the outer surface. The pair of step portions A1 and A2 are provided at shallow positions at the same depth, and the other pair of step portions B1 and B2 are provided at deep positions at the same depth. Continuous step portions 3 are provided between adjacent step portions A1 and B1, B1 and A2, A2 and B2, and B2 and A1, and the peripheral wall 2 is surrounded by the step portions. There is.

The function of the stepped portion will be explained below.

When storing containers by stacking them, a plurality of containers are stacked one on top of the other in such a direction that the stepped portions A and B are engaged with each other (hereinafter referred to as the "basic state"). At this time, the stacked containers can be fitted to the deep position where the stepped portion B is formed. However, in this state, there is no gap between the inner and outer surfaces of the peripheral wall 2, making it unsuitable for draining and drying.

When draining and drying, multiple containers are stacked one on top of the other in an orientation in which the stacked containers are rotated 90 degrees (hereinafter referred to as "rotated state"). By rotating the container 90 degrees, the stepped portion A of the lower container and the stepped portion B of the upper container are engaged. Then, the stepped portion A of the upper container is not locked, and the upper part of the upper container is largely exposed from the lower container. Therefore, a wide gap 4 is created below the stepped portion A.
In addition, since continuous step portions 3 are provided between adjacent step portions, gaps 5 are also created below the step portions 3.

Therefore, water droplets remaining in the container flow out through the gaps 4 and 5, and air circulates through the gaps 4 and 5, thereby promoting drying.
In addition to the function of increasing the gap, the continuous step portions 3 also have the function of making it easier to grasp the orientation of the container.

This invention facilitates draining and drying of packaging containers in a stacked state, which is difficult to drain and dry in a stacked state, and has industrial applicability.

1 Container 2 Peripheral wall 3 Continuous stepped portion 4 Gap 5 Gap A1, A2 Pair of stepped portions B1, B2 Pair of stepped portions
L1, L2 virtual straight line

Claims (4)

In a packaging container that has a tapered outer surface of its peripheral wall so that it can be stacked, and whose opening has a contour shape in plan view that allows the upper and lower containers to fit together when rotated 90 degrees,
Two pairs of locking steps are provided on the inner and outer surfaces of the container peripheral wall,
The pair of locking steps are formed at the intersection of the first imaginary straight line passing through the center point of the planar shape and the peripheral wall of the container,
The other pair of locking step portions are formed at the intersection of the peripheral wall of the container and a second imaginary straight line passing through the center point of the planar shape and making 90 degrees to the straight line,
Each pair of locking step portions are formed at the same depth position,
One pair of locking steps are formed at a shallow position, and the other pair of locking steps are formed at a deep position,
When the upper and lower containers are stacked in the same direction, the stepped portions formed at the same depth lock into each other, and the upper and lower containers are stacked almost closely together.On the other hand, the containers to be stacked are rotated 90 degrees and stacked. Then, the step formed at a shallow position and the step formed at a deep position are engaged, and the upper container is lifted from the lower container, and a large gap is created between the side walls of the upper and lower containers. did,
Packaging containers. The packaging container according to claim 1, wherein the first virtual straight line is the longest straight line passing through the center point of the planar shape. 2. The packaging container according to claim 1, wherein the packaging container is square in plan view, and the locking step portions are provided at four corners of the container peripheral wall. 4. The packaging container according to claim 1, wherein adjacent locking steps are connected by a continuous step.