JP7333667B1 - Lower container, packaging container - Google Patents

Abstract

[Problem] A lower container that uses a lid-integrated container as an upper container and has a storage space divided into upper and lower parts without sacrificing the convenience of the lid-integrated container, and a lower container and a lid-integrated container. Realize a packaging container that [Solution] The lower container (2) supports the storage bottom portion (21), the peripheral wall portion (22), and the outer edge of the upper container (3), which is a lid-integrated container. A mounting stage section (24) that is placed above the storage bottom section (21), a locking section (25) that locks the outer edge of the placed upper container (3), and a placed upper portion. It has a relief part (26) provided at a part corresponding to the hinge part (33) of the container (3). The relief part (26) has a part that allows a hinge part (33) to be opened and expanded when the lid (32) of the upper container (3) is opened and closed in a placed and locked state. [Selection diagram] Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower container and a packaging container capable of containing food and the like.

2. Description of the Related Art Conventionally, various types of food such as boxed lunches and side dishes are sold in packaging containers at various stores that sell take-out foods. In addition, it is also practiced to purchase the necessary items from the various side dishes arranged on the table in a necessary amount in a packaging container. The work of placing the product in the packaging container may be performed by the store employee or by the purchaser himself/herself.

Packaging containers have a wide variety of shapes, structures, and the like. One known example is a lid-integrated container in which a container body and a lid are connected by a hinge, a so-called food pack (for example, Patent Document 1 ).

There is also a packaging container that includes an inner plate in addition to the container body and lid (for example, Patent Document 2). In such a container, boiled rice, noodles, etc., are stored under the middle plate, and side dishes, rice bowl ingredients, etc. are stored on the middle plate.

JP 2016-41599 A JP 2015-145285 A

By the way, lid-integrated containers are highly convenient products in which the lid of the container body can be easily closed and opened.

On the other hand, a packaging container provided with an inner plate is superior in terms of storing different foods, etc. separately, because the interior can be partitioned into upper and lower parts by the inner plate. However, since the container main body, the lid and the inner plate are separate parts, it does not have the convenience of a lid-integrated container.

One aspect of the present invention is a lower container in which a lid-integrated container can be used as an upper container, and a storage space can be divided into upper and lower portions to store food and the like without impairing the convenience of the lid-integrated container, and the lower container and the lower container. An object of the present invention is to realize a two-stage packaging container composed of a lid-integrated container.

In order to solve the above-described problems, a lower container according to an aspect of the present invention includes a housing bottom portion, a peripheral wall portion extending upward from the housing bottom portion, a container main body positioned on the inner peripheral side of the peripheral wall portion, and A rectangular lid-integrated container in which a lid is connected by a hinge portion is used as an upper container, and a mounting step portion for supporting the outer edge of the upper container and placing it above the housing bottom portion; an engaging portion positioned above the writing stepped portion for engaging an outer edge portion of the upper container placed on the placing stepped portion; and a relief portion provided at a portion corresponding to the hinge portion, the relief portion having the upper container mounted on the mounting step portion and the outer edge portion being locked by the locking portion. In the folded state, there is a portion that allows the hinge portion to be opened and widened when the lid body is opened and closed.

According to the above configuration, the upper container can be placed and locked on the lower container at the mounting step portion and the locking portion of the lower container. As a result, a packaging container having a two-stage structure in which the upper container is stably set on the lower container is realized. Moreover, the lower container is formed with a relief portion having a portion that allows the hinge portion to be opened and widened when the lid body of the upper container set in the lower container is opened and closed. The lid of the upper container can be freely opened and closed.

As one aspect of the present invention, the mounting step portion may have a hinge mounting step portion on which the hinge portion is mounted.

According to the above configuration, the hinge portion whose shape changes as the lid of the upper container is opened and closed can be stably supported, so that the opening and closing operation of the lid is stabilized.

As one aspect of the present invention, the locking portion may have a hinge locking portion that is positioned above the hinge mounting step portion and locks the hinge portion.

According to the above configuration, the opening and closing operation of the lid is stabilized by engaging the hinge portion whose shape changes as the lid of the upper container is opened and closed.

As one aspect of the present invention, a predetermined storage space may be secured between the bottom surface of the container body of the upper container placed on the mounting step and the storage bottom surface.

As one aspect of the present invention, the mounting step portion may be formed in an annular shape over the entire circumference of the peripheral wall portion.

According to the above configuration, since the outer edge of the upper container is placed on the stepped portion of the lower container over the entire circumference, the upper container can be placed on the lower container in a more stable state. can.

As one aspect of the present invention, the upper container further has a flange portion that extends flat laterally from the upper end portion of the peripheral wall portion, and the inner end portion of the flange portion is placed and locked. It may have a stopper function that restricts the movement of the lid in the opening direction.

According to the above configuration, the flange part restricts the movement of the lid of the upper container in the opening direction, so that the lid can be in a half-open state. As a result, the cover can be prevented from being completely opened, and the area occupied by the packaging container with the two-stage structure in the state where the cover is open can be reduced.

In order to solve the above problems, a packaging container according to one aspect of the present invention includes an upper container, which is a rectangular container in which a container body and a lid are connected by a hinge, and and a lower container of the aspect.

According to one aspect of the present invention, a lid-integrated container can be used as an upper container, and a lower container and a lower container in which food and the like can be stored by dividing the storage space above and below without impairing the convenience of the lid-integrated container, and the lower container. It is possible to realize a packaging container having a two-tiered structure composed of the lid-integrated container and the lid-integrated container.

1 is a perspective view of a packaging container according to an embodiment of the present invention with its lid closed; FIG. FIG. 2 is a perspective view of the packaging container of FIG. 1 with the lid open; FIG. 2 is a perspective view of the upper container of the packaging container of FIG. 1 with the lid open, viewed from the container body side. Fig. 2 is a perspective view of a lower container 2 of the packaging container of Fig. 1; Figure 5 is a plan view of the lower container of Figure 4; FIG. 6 is a cross-sectional view taken along the line AA in FIG. 5; FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5; 1. It is a schematic end view of the main part on the connecting side side in the closed state of the packaging container of FIG. FIG. 2 is a schematic end view of the main part of the connecting side of the packaging container of FIG. 1 with the lid opened. 1. It is a figure explaining direction of the upper container with respect to a lower container in the packaging container of FIG. FIG. 10 is a view showing a state in which the lid-open upper container shown in FIG. 9 is rotated 180 degrees;

In the packaging container according to one aspect of the present invention, the lid-integrated container itself has a function as an inner plate that partitions the top and bottom and a function as a lid body of the packaging container, and the convenience that the lid-integrated container has It can be accommodated separately from the top and bottom without impairing the flexibility.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 10. FIG. In the present embodiment, as a packaging container according to one aspect of the present invention, a packaging container for food that stores food as an object to be stored will be described as an example. However, the items to be stored in the packaging container according to one aspect of the present invention are not limited to foodstuffs.

(Overview of packaging container)
An overview of a packaging container 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a perspective view of a packaging container 1 according to one embodiment of the present invention with the lid closed. FIG. 2 is a perspective view of the packaging container 1 of FIG. 1 with the lid open.

As shown in FIGS. 1 and 2, in this embodiment, the packaging container 1 has a square shape in plan view and a rectangular shape in plan view. A packaging container 1 includes a lower container 2 and an upper container 3 . The upper container 3 is a lid-integrated container having a hinge portion 33 , and the lid 32 of the upper container 3 serves as the lid of the packaging container 1 . In other words, the packaging container 1 is a packaging container having a two-tiered structure in which the storage space is vertically separated. A later-described housing bottom surface portion 21 of the lower container 2 constitutes the bottom of the packaging container 1, and a main body bottom surface portion 34 of the upper container 3 constitutes a middle bottom separating the top and bottom of the packaging container 1, and the lid of the upper container 3. 32 constitutes the lid of the packaging container 1 .

In the packaging container 1, the lid 32 of the upper container 3 can be freely opened and closed while the upper container 3 is placed on the lower container 2 and locked. In the following, placing and locking the upper container 3 on the lower container 2 is also referred to as "set", and the state thereof is also referred to as "set state".

The lower container 2 and the upper container 3 are not particularly limited, but can be manufactured by thermoforming a synthetic resin sheet. The synthetic resin sheet may be either a non-foamed resin sheet or a foamed resin sheet.

In the case of a non-foamed resin sheet, it is preferable to use a sheet having a thickness within the range of 0.12 mm to 0.45 mm, particularly within the range of 0.18 mm to 0.30 mm. In the case of a foamed resin sheet, it is preferable to use a sheet having a thickness within the range of 0.3 mm to 3.0 mm, particularly within the range of 0.5 mm to 2.0 mm. Furthermore, in the case of a foamed resin sheet, the expansion ratio is preferably 1.05 to 20.0 times, particularly 1.5 to 15.0 times.

Non-foamed resin sheets include, for example, polyethylene resin sheets, polyolefin resin sheets such as polypropylene resin sheets, polystyrene resin sheets, polyethylene terephthalate resin sheets, and polyester sheets such as modified polyethylene terephthalate resin sheets with heat resistance. A thermoplastic resin sheet such as a base resin sheet can be used. Materials that can withstand heating in a microwave oven, such as heat-resistant polystyrene resin sheets, polypropylene resin sheets, and modified polyethylene terephthalate resin sheets with heat resistance, may also be used.

As the foamed resin sheet, for example, a foamed polyolefin resin sheet, a foamed polystyrene resin sheet, and a foamed polyester resin sheet such as foamed polyethylene terephthalate can be used.

A laminated sheet obtained by laminating a synthetic resin sheet can also be used. Examples of the laminated sheet include a laminated sheet obtained by thermally laminating a resin film on a non-foamed resin sheet or a foamed resin sheet, a laminated sheet obtained by a coextrusion method, and a laminated sheet obtained by an extrusion lamination method. Laminated sheets and the like can be mentioned.

Thermoforming includes vacuum forming, pressure forming, vacuum pressure forming, hot plate forming, and the like.

The lower container 2 and the upper container 3 may be colored such as black or white, or may be transparent or translucent so that the inside can be visually recognized. In this embodiment, the lower container 2 is black and opaque, and the upper container 3 is colorless and transparent. The lower container 2 and the upper container 3 may be provided with ribs or the like for reinforcement.

(upper container)
By being placed above the lower container 2, the upper container 3 also functions as a lid that closes the opening of the lower container 2 (see FIGS. 1 and 2). FIG. 3 is a perspective view of the upper container 3 of the packaging container 1 of FIG. 1, viewed from the container body 31 side with the lid open. The upper container 3 is a so-called food pack that accommodates various foods.

As shown in FIG. 3 , the upper container 3 is a lid-integrated container in which a container body 31 and a lid 32 are connected by a hinge portion 33 . The lid 32 can be rotated up and down about a horizontal axis with respect to the container body 31 by means of a hinge portion 33 . The specific configurations of the container body 31, the lid 32, and the hinge portion 33 that connects and integrates them are all arbitrary, but for example, the configuration shown in the drawing can be adopted.

In this embodiment, the container body 31 has a rectangular shape in plan view, and includes a body bottom portion 34 , a body side portion 35 , a convex portion 36 and a body flange portion 37 .

The main body bottom portion 34 has a rectangular shape in a plan view. The main body side surface portion 35 is a wall surface that rises from the outer edge of the main body bottom surface portion 34 so as to be slanted and spread upward. The main body side portions 35 are provided on four sides (four sides) so as to surround the outer edge of the main body bottom portion 34 .

The convex portion 36 is provided along the entire circumference on the side of the upper end of the main body side portion 35 and convexes upward. Specifically, the convex portion 36 is formed at the upper end of the main body side portion 35 by slightly extending laterally and then rising, then extending flatly laterally, and then falling again.

The body flange portion 37 is provided along the entire circumference at the lower end of the outer wall forming the convex portion 36 . Specifically, the main body flange portion 37 is formed so as to flatly extend sideways from the lower end of the outer wall forming the convex portion 36 .

The lid body 32 has a shape corresponding to the container body 31, is rectangular in plan view, and is configured to face the container body 31 in the closed state. The lid body 32 has a shape that bulges upward when the lid is closed.

The lid body 32 includes a top surface portion 38 , a lid side surface portion 39 , a concave portion 40 and a lid flange portion 41 . Although FIG. 3 shows the lid open state, for convenience of explanation, the configuration of each part of the lid body 32 will be described based on the lid closed state.

The top surface portion 38 has a rectangular shape in plan view. The lid side surface portion 39 is a wall surface that slopes downward from the outer edge of the top surface portion 38 when the lid is closed so as to spread downward. The lid side surface portions 39 are provided on four sides (four sides) so as to surround the outer edge of the top surface portion 38 .

The recessed portion 40 is provided along the entire circumference from the lower end of the lid side surface portion 39 and is recessed upward in the closed state. Specifically, the recessed portion 40 is formed by slightly extending laterally and then rising at the lower end of the lid side portion 39 in the closed state, then extending flatly laterally, and then falling again. .

The lid flange portion 41 is provided along the entire circumference at the lower end of the outer wall forming the concave portion 40 . Specifically, the lid flange portion 41 is formed to flatly extend laterally from the lower end of the outer wall forming the recessed portion 40 in the closed state.

In the present embodiment, the convex portion 36 of the container body 31 is fitted into the concave portion 40 of the lid 32, whereby the lid 32 is locked (fitted) to the container body 31, and the upper container 3 is closed. Lid state. The body flange portion 37 and the lid flange portion 41 are configured so as to overlap each other when the lid is closed.

The hinge portion 33 is provided at a connecting portion between the body flange portion 37 and the lid flange portion 41 . The container main body 31 and the lid body 32 are connected by a hinge portion 33 . In this embodiment, the hinge portion 33 is formed on the long side of the body flange portion 37 and the lid flange portion 41 . Hereinafter, the side on which the hinge portion 33 is located is referred to as a connecting side, and the side opposite to the connecting side is referred to as an unsealing side.

The hinge portion 33 can have various shapes, and FIG. 3 shows the hinge portion 33 having an arcuate cross section. The hinge portion 33 may have a U-shaped cross section. Further, the hinge portion 33 may be flat when the lid is open, and may be folded in half vertically by the folding portion when the lid is closed. The bent portion is a portion formed linearly at the center of the hinge portion 33 .

The body flange portion 37 and the lid flange portion 41 described above and the hinge portion 33 are positioned at the outer edge of the upper container 3 . At least a part of the outer edge of the upper container 3 is supported by a later-described mounting step portion 24 (see FIG. 4) of the lower container 2 , so that the upper container 3 is mounted above the lower container 2 . In other words, the “outer edge portion” is the connection side on which the hinge portion 33 is formed, and the side of the body flange portion 37 and the lid flange portion 41 on which the hinge portion 33 is not formed. a side and an opposing opening side.

A lid knob portion (knob portion) 42 is formed on the unsealing side of the lid flange portion 41 . Similarly, a main body knob portion (a knob portion) 43 is formed on the unsealing side of the main body flange portion 37 . When the lid of the upper container 3 is closed, the lid knob portion 42 and the main body knob portion 43 are configured to overlap each other.

The lid body 32 can be easily opened with respect to the container body 31 by gripping the lid knob portion 42 with the fingertips. Also, by pinching together the overlapping portion of the lid knob 42 and the body knob 43, the upper container 3 can be easily removed from the lower container 2.例文帳に追加In this embodiment, both the lid gripping portion 42 and the body gripping portion 43 are formed at both ends of the opening side.

(lower container)
The lower container 2 is configured so that the upper container 3 can be placed thereon, and is a type of packaging container that realizes a packaging container 1 with a two-stage structure by placing the upper container 3 (see FIG. 1 , 2).

4 is a perspective view of the lower container 2 of the packaging container 1 of FIG. 1. FIG. 5 is a plan view of the lower container 2 of FIG. 4. FIG. 6 is a cross-sectional view taken along the line AA of FIG. 5. FIG. 7 is a cross-sectional view taken along the line BB in FIG. 5. FIG. In addition, in FIGS. 6 and 7, the cross section is drawn thicker than it actually is for emphasis. FIG. 8 is a schematic end view of the main part of the connecting side of the packaging container 1 in FIG. 1 with the lid closed. FIG. 9 is a schematic end view of the main part of the connecting side of the packaging container 1 in FIG. 1 with the lid opened. The state of the hinge portion 33 shown in FIG. 9 is the expanded state of the hinge portion 33 . 8 and 9 show only the end face of the connecting side of the packaging container 1 cut in the vertical direction. FIG. 10 is a diagram for explaining the orientation of the upper container 3 with respect to the lower container 2 in the packaging container 1 of FIG. FIG. 11 is a diagram showing a state in which the upper container with the lid open shown in FIG. 9 is rotated 180 degrees.

As shown in FIGS. 4 and 5, the lower container 2 has a shape corresponding to that of the upper container 3, is rectangular in plan view, and is open at the top. The lower container 2 includes a housing bottom portion 21 , a peripheral wall portion 22 extending upward from the housing bottom portion 21 , a container flange portion (flange portion) 23 , a mounting step portion 24 , a locking portion 25 , and a relief portion 26 . and have.

In the present embodiment, the housing bottom surface portion 21 has a generally rectangular shape in plan view, and the outer edge thereof has a zigzag shape in plan view. A recess 21-1 that is one step lower than the other portions is formed in the outer edge of the housing bottom portion 21, and the portions other than the recess 21-1 are formed flat.

The peripheral wall portion 22 is formed so as to be inclined upward from the outer edge of the housing bottom portion 21 so as to spread upward, and the portion surrounded by the upper end portion 22a of the peripheral wall portion 22 is an opening. The peripheral wall portion 22 has a first peripheral wall portion 22-1 connected to the outer edge of the housing bottom portion 21 and a second peripheral wall portion 22-2 located above the first peripheral wall portion 22-1.

The first peripheral wall portion 22-1 is formed to protrude (swell) toward the center of the lower container 2, and is between the upper end of the first peripheral wall portion 22-1 and the lower end of the second peripheral wall portion 22-2. , a flat stepped portion is provided. This stepped portion constitutes the mounting stepped portion 24 .

The cross-sectional shape of the first peripheral wall portion 22-1 cut along a plane parallel to the housing bottom surface portion 21 and the shape of the inner edge of the mounting step portion 24 also exhibit a zigzag shape.

The mounting step portion 24 is positioned on the inner peripheral side of the peripheral wall portion 22 and supports the outer edge portion of the upper container 3 to mount the upper container 3 above the housing bottom surface portion 21 . By providing the mounting step portion 24, the upper container 3 can be mounted above the lower container 2 (see FIGS. 1 and 2). In this embodiment, the mounting step portion 24 supports the upper container 3 by abutting at least a portion thereof against the outer edge of the upper container 3 .

As shown in FIGS. 8 and 9, a predetermined height is provided between the main body bottom portion (bottom portion) 34 of the container body 31 of the upper container 3 placed on the mounting step portion 24 and the housing bottom portion 21. A predetermined accommodation space having a height h is secured. That is, the mounting step portion 24 is provided at a height that can ensure a predetermined height h between the body bottom portion 34 of the upper container 3 placed on the mounting step portion 24 and the housing bottom portion 21 . It is

Further, in this embodiment, the mounting stepped portion 24 has a hinge mounting stepped portion 24-1 on which the hinge portion 33 is mounted. The hinge mounting stepped portion 24-1 abuts against the hinge portion 33 to support the hinge portion 33. As shown in FIG. With such a configuration, as shown in FIGS. 8 and 9, the hinge portion 33, which changes in shape as the lid body 32 of the upper container 3 is opened and closed, is placed on the hinge mounting step portion 24-1. The lid 32 can be stably supported, and the opening/closing operation of the lid 32 is stabilized.

Further, in the present embodiment, the first peripheral wall portion 22-1 is located inside the second peripheral wall portion 22-2 over the entire circumference. Therefore, the mounting step portion 24 is formed in an annular shape over the entire circumference of the peripheral wall portion 22 . With such a configuration, the outer edge of the upper container 3 is supported by the lower container 2 over the entire circumference, and the upper container 3 can be placed on the lower container 2 in a more stable state.

In addition, in the present embodiment, the first peripheral wall portion 22-1 protrudes more at the central portion of each side and the corner portions at the four corners than the other portions, and is located at the central portion and the corner portions at the four corners of each side. The mounting step portion 24 has a larger area than the other portions. By adopting such a configuration, the first peripheral wall portion 22-1 can secure a certain amount of accommodation even when the lower container 2 protrudes, and the large-area mounting step portion 24 provided at a key point can be used. Therefore, the upper container 3 can be stably supported.

Note that the configuration of the mounting step portion 24 is not limited to the configuration illustrated in FIGS. good. For example, the second peripheral wall portion 22-2 may be formed in a rib-like shape protruding toward the center of the lower container 2 and extending in the horizontal direction, and the upper surface thereof may be used as a mounting step portion. Also, the mounting stepped portions may be provided only at the four inner corners of the peripheral wall portion 22 so that the opening of the lower container 2 has a chamfered rectangular shape in plan view.

The locking portion 25 is positioned above the mounting step portion 24 and locks the outer edge portion of the upper container 3 mounted on the mounting step portion 24 . By providing the locking portion 25 , the upper container 3 can be locked to the lower container 2 . In this embodiment, the locking portion 25 is provided on the inner peripheral side of the peripheral wall portion 22 .

In this embodiment, the engaging portion 25 is positioned at the upper end portion 22a of the peripheral wall portion 22, and as shown in FIG. It is provided in a rib shape. The upper container 3 is locked when the upper surface of the outer edge portion of the upper container 3 abuts against the lower surface of the locking portion 25 . In the present embodiment, such locking portions 25 extend from the upper end portion 22a of the peripheral wall portion 22 in the direction in which the edge of the upper end portion 22a extends, and a total of eight such locking portions 25 are provided, two on each side.

Further, in this embodiment, the locking portion 25 has a hinge locking portion 25-1 that is positioned above the hinge mounting step portion 24-1 and locks the hinge portion 33. As shown in FIG. With such a configuration, as shown in FIGS. 8 and 9, the hinge portion 33, which changes in shape as the lid 32 of the upper container 3 is opened and closed, is locked by the hinge locking portion 25-1. Therefore, the opening/closing operation of the lid body 32 is stabilized.

4 and 5, the outer edge of the upper container 3 placed on the mounting step portion 24 can be locked. Anything is fine.

The relief portion 26 is provided at a portion corresponding to the hinge portion 33 of the upper container 3 placed on the stepped portion 24 . In this embodiment, the relief portion 26 is provided in the peripheral wall portion 22 .
With the upper container 3 placed on the mounting stepped portion 24 and the outer edge portion thereof locked by the locking portion 25, the relief portion 26 can open and widen the hinge portion 33 generated when the lid body 32 is opened and closed. It has a part. In other words, the escape portion 26 allows the cover 32 to be opened and closed by escaping the change in the shape of the hinge portion 33 when the upper container 3 is placed and locked (set state). .

By providing the relief portion 26 , the lid 32 of the upper container 3 can be freely opened and closed even when the upper container 3 is set on the lower container 2 . The relief portion 26 enables the lid 32 to be opened at an angle of 90 degrees or more with respect to the container body 31 .

In this embodiment, the distance between the hinge-mounting stepped portion 24-1 and the hinge locking portion 25-1 is set to a distance that allows the change in the shape of the hinge portion 33 when the hinge portion 33 is opened and widened, and the hinge locking portion 25 -1, a relief portion 26 is formed by securing a space that enables opening and closing of the lid body 32. As shown in FIG. The outer edge of the upper container 3 is locked at a portion other than the hinge portion 33, and the hinge locking portion 25-1 is not provided. It is possible to secure a space that makes it possible to provide a relief portion 26 . In short, the relief part 26 has a space in the part where the hinge part 33 of the upper container 3 in the set state is located, so that the shape of the hinge part 33 can be changed when the lid body 32 is opened and closed. Any shape that can be secured may be used.

The container flange portion 23 is formed to flatly extend laterally from the upper end portion 22a of the peripheral wall portion 22 . The container flange portion 23 is provided over the entire circumference of the upper end portion 22 a of the peripheral wall portion 22 .

As shown in FIG. 9, the inner end portion of the container flange portion 23, that is, the upper end portion 22a of the peripheral wall portion 22 is located in the middle of the movement of the lid body 32 of the upper container 3 set on the lower container 2 in the opening direction. It has a stopper function that regulates with By adopting such a configuration, it is possible to prevent the lid 32 of the upper container 3 set on the lower container 2 from being opened too much, thereby making it half open. As a result, the area occupied by the packaging container 1 having the two-stage structure in the state where the lid 32 is open can be reduced.

In this embodiment, as shown in FIGS. 4 and 5 , the mounting step portion 24 , the locking portion 25 , and the relief portion 26 are provided symmetrically about the center of the housing bottom portion 21 . With such a configuration, the upper container 3 can be set even if the upper container 3 is rotated 180 degrees with respect to the lower container 2, as shown in the diagrams of reference numerals 101 and 102 in FIG. Further, as shown in FIG. 11, the lid 32 of the upper container 3 can be opened and closed even if the upper container 3 is rotated by 180 degrees.

As a result, when placing the upper container 3, there is no need to consider which side of the two long sides of the lower container 2 the unsealing side of the upper container 3 should be positioned. It can be easily set by matching only the shape of

Further, in this embodiment, as shown in FIGS. 4, 5 and 7, a pair of corner cut portions 27 are formed at diagonal positions of the container flange portion 23 . The corner cut portion 27 protrudes the tips of the lid knob portion 42 and the main body knob portion 43, which are the knob portions of the upper container 3 that has been set, from the outer edge of the lower container 2, so that the lid body 32 can be removed by pinching the knob portions. It facilitates the opening operation. By providing a pair of such corner cut portions 27 at diagonal positions of the container flange portion 23, even when the upper container 3 is set after being rotated by 180 degrees, the grip portion can always be protruded.

Further, in the present embodiment, the corner portion of the second peripheral wall portion 22-2 where the corner cut portion 27 is located has a tip that widens from the upper end of the second peripheral wall portion 22-2 toward the upper end of the first peripheral wall portion 22-1. An inclined surface 28 is formed so as to be inclined. By providing the inclined surface 28, the lid knob 42 and the main body knob 43 of the set upper container 3 are oriented obliquely upward, and the tip portion is oriented obliquely upward and sticks out. This makes it easier to remove the upper container 3 from the lower container 2 by grasping both the lid knob 42 and the main body knob 43 .

(effect)
As described above, according to the lower container 2 and the packaging container 1 of the present embodiment, the upper container 3, which is a lid-integrated container, functions as a middle plate that partitions the upper and lower housing spaces of the packaging container 1 and also as a packaging container. It functions as a lid body of the container 1 and can be vertically separated without impairing the convenience of the lid-integrated container. Moreover, since the lower container 2 is formed with the escape portion 26 that allows the cover 32 to open and close by escaping the change in the shape of the hinge portion 33 of the upper container 3 when the hinge portion 33 is opened and expanded, it is set in the lower container 2 . Even in this state, the lid 32 of the upper container 3 can be freely opened and closed.

Thus, even when the upper container 3 containing side dishes such as tempura is set on the lower container 2 containing rice, noodles, etc., the lid body 32 can be easily opened and closed to add the side dishes. .

In addition, in the above configuration, the mounting stepped portion 24 and the engaging portion 25 are provided point-symmetrically about the center P of the housing bottom portion 21. Therefore, even if the upper container 3 is rotated by 180 degrees, the lower container 2 does not move. can be set on.

Thereby, setting can be easily performed by matching only the shape of the lower container 2 and the upper container 3 without considering the position of the hinge portion of the upper container 3, etc., and the usability is good.

Moreover, in the above configuration, the relief portions 26 are also provided point-symmetrically about the center P of the housing bottom portion 21. Therefore, even when the upper container 3 is rotated 180 degrees and set, the lid of the upper container 3 can still be opened. The body 32 can be freely opened and closed.

That is, according to the above configuration, the upper container 3 can be set even if the upper container 3 is rotated 180 degrees with respect to the lower container 2, and the upper container 3 can be set even if the upper container 3 is rotated 180 degrees with respect to the lower container 2. can be opened and closed.

Here, the configuration in which the upper container 3 can be set with 180° rotational symmetry is illustrated, but in the configuration in which the lid 32 of the upper container 3 in the state of being set in the lower container 2 can be freely opened and closed, such a configuration can be used. It doesn't have to be.

In addition, since the upper container 3, which is a lid-integrated container, functions as a lid body and an inner tray of the upper and lower packaging containers, the lid body 32 is locked (fitted) with the container body 31. ) and locking by the locking portion 25 of the lower container 2 work doubly. As a result, it is possible to effectively prevent the lid 32 from being carelessly opened and the stored items from being wasted during transportation.

In addition, by designing the lower container 2 according to the existing lid-integrated container, it is possible to realize the upper and lower two-stage packaging container 1 using the existing lid-integrated container. As a result, even if the upper container 3 is newly designed, the upper container 3 can be used both singly and in combination with the lower container 2 .

As a result, we can contribute to the achievement of Sustainable Development Goals (SDGs) such as Goal 12 "Responsible consumption and production" and Goal 14 "Life below water".

An example in which the lid-integrated container is used as the upper container and placed on the lower container has been shown, but the usage is not limited to this. Instead of a lid-integrated container, a fitting lid can be fitted to the lower container for use.

The present invention is not limited to the above-described embodiments, but can be modified in various ways within the scope of the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. is also included in the technical scope of the present invention.

1 packaging container 2 lower container 3 upper container 21 housing bottom portion 22 peripheral wall portion 22a upper end portion 23 container flange portion (flange portion)
24 Mounting stepped portion 24-1 Hinge mounting stepped portion 25 Locking portion 25-1 Hinge locking portion 26 Relief portion 31 Container main body 32 Lid 33 Hinge portion (outer edge portion)
34 Body bottom part (bottom part)
37 body flange (outer edge)
41 Lid flange (outer edge)

Claims (7)

a housing bottom portion;
a peripheral wall portion extending upward from the accommodation bottom portion;
A rectangular lid-integrated container located on the inner peripheral side of the peripheral wall portion and having a container body and a lid connected by a hinge portion is used as the upper container, and the outer edge portion of the upper container is supported to support the storage bottom portion. a stepped mounting portion to be mounted above the
a locking portion positioned above the stepped mounting portion for locking an outer edge portion of the upper container placed on the stepped mounting portion;
a relief portion provided at a portion corresponding to the hinge portion of the upper container placed on the stepped portion,
The relief portion prevents the hinge portion from expanding and expanding when the lid body is opened and closed in a state in which the upper container is placed on the mounting step portion and the outer edge portion is locked by the locking portion. Lower container with possible sites. 2. The lower container according to claim 1, wherein the mounting step portion has a hinge mounting step portion on which the hinge portion is mounted. 3. The lower container according to claim 2, wherein the locking portion has a hinge locking portion that is positioned above the hinge mounting stepped portion and locks the hinge portion. 2. The lower container according to claim 1, wherein a predetermined storage space is secured between the bottom surface of the container body of the upper container placed on the mounting step and the storage bottom surface. 2. The lower container according to claim 1, wherein the mounting stepped portion is formed in an annular shape over the entire circumference of the peripheral wall portion. further comprising a flange portion extending flat laterally from the upper end portion of the peripheral wall portion;
2. The lower container according to claim 1, wherein the inner end portion of the flange portion has a stopper function for restricting the movement of the lid in the opening direction of the upper container placed and locked. an upper container, which is a rectangular container in which the container body and the lid are connected by a hinge;
A packaging container comprising the lower container according to any one of claims 1 to 6.

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