WO2020039907A1

WO2020039907A1 - Packaging container

Info

Publication number: WO2020039907A1
Application number: PCT/JP2019/030697
Authority: WO
Inventors: 松岡忠
Original assignee: シーピー化成株式会社
Priority date: 2018-08-23
Filing date: 2019-08-05
Publication date: 2020-02-27
Also published as: JP7244045B2; JP2020029294A; CN111295341A

Abstract

In the present invention, at least one of four corners of a rectangular container main body (3) and a lid body is specified as an designated corner, the designated corner (1X) is defined as a lid-opening area (11), inner peripheral ribs (32A) protruding toward the inside of the container are disposed on a main body peripheral wall section (32) at a position corresponding to the designated corner (1X), and inverse-tapered engagement sections where a main body inverse-tapered part (35) and a lid body inverse-tapered part engage with each other are respectively disposed over substantially the entire lid-opening area (11) and independently at a middle part of at least one of the sides of the rectangular container body (3) and the lid body in peripheral areas of the container other than the lid-opening area (11).

Description

Packaging containers

The present invention relates to a packaging container provided with a container body and a lid.

For example, in the following Patent Document 1 (Japanese Patent No. 6371023), a main body reverse taper portion [35] provided on the container main body [3] and a lid reverse taper portion [55] provided on the lid [5] are provided. ], The container [1] is disclosed, which enables the container body [3] and the lid [5] to be firmly fitted to each other. And, in the packaging container [1] of Patent Document 1, the lid knob which is held at the time of opening the lid corresponds to the position where the main body reverse taper portion [35] and the lid reverse taper portion [55] engage. Since the portion [56] is provided, the container body [3] and the lid [5] can be firmly fitted as described above, but the lid is easily opened.

By the way, a packaging container configured so that the container body and the lid are firmly fitted when the lid is closed requires a certain amount of force when the lid is closed, and the lid has a knob portion and is opened. Even with an easy configuration, a certain amount of force is required since the fitting between the container body and the lid must be released when the lid is opened. Therefore, in such a packaging container, a load is applied when the lid is opened or closed, and the container body may be bent. Deflection of the container main body also causes the articles contained in the container to ramp up. For example, in a case where a partition wall [38] for partitioning a storage portion [37] for storing an object to be stored is provided in the container body [3] as in a packaging container [1] of Patent Document 1. The partition wall [38] plays a role of reinforcing the container body [3], and it is also possible to suppress the bending of the container body [3]. However, in this type of field, such a partition wall is not always provided in the packaging container, and furthermore, with respect to suppressing the bending of the container body regardless of the presence or absence of the partition wall. There is room for improvement.

Japanese Patent No. 6371023

て In view of the above situation, in a packaging container in which the container main body and the lid are firmly fitted, it is desired that the container main body be hardly bent when the lid is opened or closed.

Packaging container according to the present disclosure,
A packaging container comprising a container body and a lid, formed by sheet molding,
The container body and the lid are formed in a rectangular shape in plan view,
The container body includes a bottom portion, a main body peripheral wall portion extending upward from the bottom portion, a main body flange portion extending outward from the main body peripheral wall portion, and a main body reverse taper portion provided on a peripheral side of the main body flange portion. And a main body knob formed of a protruding piece protruding outward from the main body flange,
The lid is provided on a top surface portion, a lid peripheral wall portion extending downward from the top surface portion, a lid flange portion extending outward from the lid peripheral wall portion, and provided on a peripheral side with respect to the lid flange portion. A lid body reverse taper portion that engages with the main body reverse taper portion, and a lid body grip portion that is composed of a projecting piece that protrudes outward from the lid body flange portion and is overlapped with the main body grip portion,
An opening area where the main body knob and the lid knob are overlapped is provided on the outer periphery of the container,
Of the four corners of the rectangular container body and the lid, at least one corner is a target corner, and the target corner is the open area,
In the main body peripheral wall portion, at a portion corresponding to the target corner portion, an inner peripheral rib portion convex toward the inside of the container is provided,
A reverse taper engagement portion formed by engaging the main body reverse taper portion and the lid reverse taper portion is provided over substantially the entire region in the cover opening region, and other than the cover opening region on the outer periphery of the container. Are independently provided at an intermediate portion of at least one of the sides of the rectangular container main body and the lid.

According to this configuration, the container main body and the lid can be firmly fitted by the engagement between the main body reverse taper and the lid reverse taper. The rigidity of the container main body can be increased by the inner peripheral rib provided on the peripheral wall of the main body, and when the lid is closed when the container main body and the lid are fitted, or when the fitting is released, the opening is released. Even when a load is applied during the lid, the container main body can be made hard to bend.

In one embodiment,
Of the four corners of the rectangular container body and the lid, two corners arranged diagonally are the target corners and the lid opening area, and the remaining two corners are the body knobs. And the lid knob is a non-opening area where the lid knob is not overlapped,
It is preferable that the reverse taper engagement portions are provided in all the open regions and all the non-open regions.

According to this configuration, since the inverted tapered engagement portions can be arranged at all four corners of the rectangular container main body and the lid, the container main body and the lid can be fitted in a well-balanced manner as a whole container. The lid opening area where the body knob and the lid knob are overlapped is arranged at two diagonal corners of the four corners of the rectangular container main body and the lid, and the other two corners are non-corner. Since the opening area is not required for the main body knob and the lid knob, the configuration can be simplified.

In one embodiment,
It is preferable that a positioning rib portion for positioning an object to be accommodated in the container is formed to protrude upward from the bottom portion.

According to this configuration, since the container in the container can be positioned by the positioning rib portion, even if a load is applied at the time of opening or closing the container and the container body is slightly bent, the container is kept in the container. Ramping can be suppressed.

In one embodiment,
It is preferable that a display unit, which serves as a guide when placing the objects to be accommodated in the container, is formed on the bottom surface.

According to this configuration, the container can be placed at a predetermined position by the display unit, so even if a load is applied at the time of opening or closing the container and the container body is slightly bent, it is arranged at a different position. It is possible to suppress mixing of a plurality of (or a plurality of types of) stored objects.

In one embodiment,
The bottom surface portion has a mounting portion on which an object is mounted, and a bottom groove portion provided at an outer edge of the mounting portion and recessed downward,
A positioning rib portion for positioning an object to be placed on the placement portion is formed to protrude upward from the placement portion, and extends continuously to the bottom groove portion,
It is preferable that the display section is formed to protrude upward or to be recessed downward from the placement section, and extend continuously to the bottom groove section.

According to this configuration, for example, excess water coming out of the object to be stored or excess water adhering to the object to be stored can flow into the bottom groove portion via the positioning rib portion or the display portion. Therefore, it is possible to suppress a decrease in the quality of the stored object.

さらなる Further features and advantages of the technology according to the present disclosure will become more apparent from the following description of exemplary and non-limiting embodiments with reference to the drawings.

Exploded front view of packaging container Exploded side view of a packaging container Top view of packaging container Top view of container body VV sectional view in FIG. VI-VI sectional view in FIG. VII-VII sectional view in FIG.

(Schematic configuration of packaging container)
The packaging container 1 according to the present embodiment will be described with reference to the drawings. The packaging container 1 is formed by sheet molding, and includes a container body 3 and a lid 5 as shown in FIGS. 1 and 2. 5 to 7 are cross-sectional views taken along a line VV, a line VI-VI, and a line VII-VII in FIG. 3 showing a plan view of the packaging container 1.
And, in order to make the cut portion of the container main body 3 easily understandable, the above-mentioned sectional line is also shown in FIG. 4 showing a plan view of the container main body 3.

The packaging container 1 accommodates an object such as food (for example, a dish) therein. The packaging container 1 according to the present embodiment is suitable for accommodating, for example, small lump objects such as nigiri sushi and rice balls. In the following, the direction from the inner side of the packaging container 1, that is, the direction from the outer edge side to the center side is referred to as “inward” or “inward”. The direction from the outer side of the packaging container 1, that is, the direction from the center to the outer edge is described as “outward” or “outside”.

示す As shown in FIG. 3, in this embodiment, the packaging container 1 is formed in a rectangular shape in plan view. That is, the container main body 3 and the lid 5 constituting the packaging container 1 are formed in a rectangular shape in plan view. In the present embodiment, the container body 3 and the lid 5 are formed in a rectangular shape in plan view, and have a pair of short sides 3SS and 5SS and a pair of long sides 3SL and 5SL, respectively. However, without being limited to such a configuration, the container body 3 and the lid 5 may be formed in a square shape in plan view.

As will be described later in detail, the container main body 3 is provided with a main body reverse taper portion 35, and the lid 5 is provided with a lid reverse taper portion 55 that engages with the main body reverse taper portion 35. Then, as shown in FIG. 3, the packaging container 1 is provided with a reverse taper engagement portion 15 in which the main body reverse taper portion 35 and the lid reverse taper portion 55 are engaged. As a result, the container body 3 and the lid 5 can be firmly fitted. The container main body 3 is provided with a main body knob 36, and the lid 5 is provided with a lid knob 56 on which the main body knob 36 is overlapped. Then, as shown in FIG. 3, the packaging container 1 is provided with a lid opening area 11 in which the main body knob 36 and the lid knob 56 overlap each other. This makes it easy to pinch the lid knob 56 in the lid opening area 11, and when opening the lid, it is easy to open the lid while pinching the lid knob 56.

Then, as shown in FIGS. 1 to 3, at least one of the four corners of the rectangular container body 3 and the lid 5 is set as the target corner 1X, and the target corner 1X is set as the lid open area 11. In the present embodiment, of the four corners of the rectangular container body 3 and the lid 5, two diagonally arranged corners are set as the target corners 1 X and the cover open area 11, and are set as the target corners 1 X. The other two corners that are not formed are the non-opening regions 12 where the main body knob 36 and the lid knob 56 are not overlapped. In the illustrated example, neither the main body knob 36 nor the lid knob 56 is disposed in the non-opening area 12.
However, without being limited to such a configuration, any one of the main body knob 36 and the lid knob 56 may be arranged in the non-covered area 12. Hereinafter, the configuration of each part of the packaging container 1 will be described in detail.

(Container body)
As shown in FIG. 4, the container main body 3 has four main body side portions 3S. In the present embodiment, the main body side portion 3S includes a pair of main body short side portions 3SS forming a short side portion of the container main body 3 having a rectangular shape in a plan view, and a pair of main body long side portions 3SL forming a long side portion. Contains.

As shown in FIGS. 4 to 7, the container main body 3 includes a bottom surface portion 31, a main body peripheral wall portion 32 extending upward from the bottom surface portion 31, a main body flange portion 33 extending outward from the main body peripheral wall portion 32, and a main body flange portion. It has a main body reverse taper portion 35 provided on the peripheral side (outside) of the main body 33 and a main body knob 36 made of a projecting piece protruding outside the main body flange portion 33.

The bottom surface portion 31 is formed in a rectangular shape (rectangular shape) in plan view. In the example shown in FIG. 4, the bottom surface portion 31 has a shape in which four corners are chamfered. The container main body 3 has a housing portion 37 that is surrounded by the main body peripheral wall portion 32 and stores an object to be housed. In the present embodiment, the bottom surface portion 31 includes a mounting portion 31A on which an object stored in the storage portion 37 is mounted, and a first bottom groove portion 31B provided on an outer edge of the mounting portion 31A and recessed downward ( And a second bottom groove 31C provided on the outer edge of the first bottom groove 31B and recessed downward.

The mounting portion 31A is provided at the center of the container body 3, and is disposed above the first bottom groove 31B and the second bottom groove 31C. The first bottom groove portion 31B is formed outside the mounting portion 31A, and in the illustrated example, is formed in an annular shape surrounding the entire circumference of the mounting portion 31A. Further, the second bottom groove 31C is formed outside the first bottom groove 31B, and in the illustrated example, is formed in an annular shape surrounding the entire circumference of the first bottom groove 31B. And the 2nd bottom groove part 31C is arrange | positioned below 31 A of mounting parts, and the 1st bottom groove part. As shown in FIGS. 5 to 7, in the present embodiment, the second bottom groove 31C constitutes the leg 30 of the container body 3 on the back surface side. In addition, as shown in FIG. 4, the second bottom groove 31C has a plurality of in-groove protrusions 31Ca protruding upward inside the second bottom groove 31C. This makes it possible to increase the rigidity of the leg 30 formed by the second bottom groove 31C.

As shown in FIG. 4, in this embodiment, a positioning rib portion 38 for positioning an object to be accommodated in a container (preventing displacement) is formed so as to protrude upward from the bottom surface portion 31. In the illustrated example, the positioning rib portion 38 is formed so as to protrude upward from the mounting portion 31A on the bottom surface portion 31, and positions an object to be mounted on the mounting portion 31A.

As shown in FIG. 4, the positioning rib 38 is disposed at the center of the mounting portion 31A in the direction along the main body short side 3SS, and extends along the main body long side 3SL. Positioning of the object in the direction along the side 3SS is performed. In the illustrated example, the central portion of the positioning rib portion 38 extends along the main body long side portion 3SL in plan view. On the other hand, both ends of the positioning rib 38 are inclined in a plan view with respect to both the direction along the main body long side 3SL and the direction along the main body short side 3SS. In the present embodiment, the positioning rib 38 extends continuously to the first bottom groove 31B. Both ends of the positioning rib 38 extend continuously from the first bottom groove 31B. In other words, the positioning rib 38 extends over the first bottom groove 31B formed in an annular shape. Thus, excess moisture on the mounting portion 31A (for example, excess moisture from an object to be stored) can flow smoothly to the first bottom groove portion 31B via the positioning rib portion 38, and the mounting portion 31A It is possible to appropriately maintain the quality of the object placed on the device. However, without being limited to such a configuration, the positioning rib portion 38 is configured to remain in the mounting portion 31A, and does not have to extend to the first bottom groove portion 31B.

では As shown in FIG. 4, in the present embodiment, the display unit 39 serving as a guide when assembling the objects to be accommodated in the container is formed on the bottom surface 31. In this example, the display unit 39 is formed to be recessed downward from the placement unit 31A on the bottom surface 31. However, without being limited to such a configuration, the display unit 39 may be formed to protrude upward from the placement unit 31A. The depth of the recess and the height of the protrusion of the display unit 39 may be small as long as they are visually recognizable. In addition, the display unit 39 may be configured by a design having no unevenness, as long as the display unit 39 can be visually recognized.

(4) As shown in FIG. 4, the display unit 39 is arranged on both sides of the positioning rib portion 38 of the mounting portion 31A with an interval from the positioning rib portion 38. A plurality of display units 39 are arranged at intervals in a direction along the main body long side 3SL. In the illustrated example, the display section 39 extends in the same direction as the direction in which both ends of the positioning rib section 38 are inclined in a plan view, and all of the plurality of display sections 39 extend in the same direction. I have. In the present embodiment, one end of the display unit 39 (the end opposite to the positioning rib 38) extends continuously to the first bottom groove 31B. Thus, in addition to the positioning ribs 38 described above, the display unit 39 allows excess water on the mounting unit 31A to flow to the first bottom groove 31B via the display unit 39. However, without being limited to such a configuration, the display unit 39 is configured to stay in the placement unit 31A, and does not have to extend to the first bottom groove 31B.

The main body peripheral wall portion 32 extends upward from the bottom surface portion 31 as described above. As shown in FIGS. 5 to 7, in the present embodiment, the main body peripheral wall portion 32 is connected to the second bottom groove portion 31C of the bottom surface portion 31 and extends upward from the second bottom groove portion 31C. In the illustrated example, the main body peripheral wall portion 32 is formed so as to be inclined outward as it goes upward.

Here, in general, for example, when a partition wall for partitioning a storage section for storing an object to be stored is provided in the container body, such as a container for hors d'oeuvres or a lunch box for storing a large number of dishes, Such a partition wall has a function of increasing the rigidity of the container main body, and can suppress bending of the container main body when a load is applied to the container main body when the lid is opened or closed, for example. However, as described above, the packaging container 1 according to the present embodiment is suitable for accommodating small lump-shaped objects such as nigiri sushi and rice balls, for example, a container for hors d'oeuvres and a lunch container. It does not have a partition wall for partitioning the housing portion 37 as described above.

Therefore, as shown in FIGS. 4 and 5, a portion corresponding to the target corner 1 X (the target corner of the four corners of the packaging container 1) in the main body peripheral wall portion 32 is directed toward the inside of the container. An inner peripheral rib portion 32A that is convex is provided. According to this, even when the above configuration does not have the partition wall, the container main body 3 can be made hard to bend when a load is applied to the container main body 3 when the lid is opened or closed. In the present embodiment, the inner peripheral rib portions 32A are disposed at two corners that are the target corners 1X and two other corners that are not the target corners 1X among the four corners of the rectangular container body 3. I have. In other words, the inner peripheral rib portions 32 A are arranged at all four corners of the container body 3. In the illustrated example, the inner peripheral rib 32 A is formed to extend vertically along the inclined surface of the main body peripheral wall 32. In this example, a plurality of inner circumferential ribs 32A are arranged in the circumferential direction at each of the four corners of the container body 3. However, without being limited to such a configuration, only one inner circumferential rib portion 32 A may be arranged at each of the four corners of the container body 3. In the case where a plurality of inner circumferential ribs 32A are provided at each of the four corners of the container body 3, the number is not limited to three as in the illustrated example, but may be two or four or more. Furthermore, the number of the inner peripheral rib portions 32A may be different between the target corner 1X and the target corner 1X.

本体 As shown in FIGS. 4 to 7, the main body flange portion 33 extends outward from the upper end of the main body peripheral wall portion 32. In the present embodiment, the container body 3 has a body skirt portion 34 extending downward from the outer end of the body flange portion 33. The main body skirt portion 34 is formed over the entire circumference of the container main body 3. The main body skirt portion 34 is formed with a main body bulging portion 34A bulging outward over the entire circumference of the container main body 3. In the present embodiment, the main body reverse taper portion 35 is formed below the main body bulge portion 34A so as to be continuous with the main body bulge portion 34A. The main body reverse taper portion 35 is formed so as to be inclined inward as going downward.

As shown in FIG. 4, in the present embodiment, the main body reverse taper portion 35 is formed intermittently on the outer periphery of the container main body 3. In the illustrated example, the main body reverse taper portion 35 is provided over substantially the entire area of the lid opening area 11 (the target corner 1X), and a plurality of main body side parts are provided in a region other than the lid opening area 11 on the outer periphery of the container. It is provided independently at the intermediate portion 3M of at least one main body side 3S among the 3S.

In the present embodiment, the main body reverse taper portion 35 is provided at the intermediate portion 3M of the main body long side portion 3SL. Further, the main body long side portion 3SL is also provided with a main body reverse taper portion 35 at each of both end portions 3E. In the illustrated example, the main body reverse taper portion 35 is also provided on the main body short side portion 3SS, and more specifically, is provided on both ends 3E of the main body short side portion 3SS. In addition, the main body reverse taper part 35 is not provided in the intermediate part 3M of the main body short side part 3SS. Therefore, in this example, the main body reverse taper portion 35 is provided independently at both ends 3E and the intermediate portion 3M of the pair of main body long side portions 3SL of the rectangular container main body 3, and the pair of main body short sides is provided. The portion 3SS is provided only at each end 3E.

本体 As shown in FIGS. 4 and 5, the main body knob 36 is formed continuously with the main body flange 33 via the main body skirt 34 and protrudes outward from the main body flange 33. In the present embodiment, the main body knobs 36 are arranged at two corners, which are the target corners 1X, of the four corners of the container body 3, and are not arranged at the other two corners that are not the target corners 1X. In the example shown in FIG. 4, the main body knob 36 is formed in a substantially triangular shape in plan view. As shown in FIG. 5, in this embodiment, the main body knob 36 extends outward from the lower end of the main body skirt 34 along the horizontal direction. In the present embodiment, the main body knob 36 is provided with a main body knob 36A formed in a planar shape and an upper protrusion 36B protruding upward from the main body knob 36A.

(Lid)
As shown in FIGS. 1 to 3, the lid 5 has four lid sides 5S. In the present embodiment, the lid side portion 5S includes a pair of lid short side portions 5SS forming the short side portion of the rectangular lid 5 in a plan view and a pair of lid long side portions 5SL forming the long side portion. And

The lid 5 includes a top surface portion 51, a lid peripheral wall portion 52 extending downward from the top surface portion 51, a lid flange portion 53 extending outward from the lid peripheral wall portion 52, and a peripheral edge side of the lid flange portion 53. A lid reverse taper portion 55 that is provided and engages with the main body reverse taper portion 35; a lid grip portion 56 that is made of a projecting piece that protrudes outside the lid flange portion 53 and overlaps the main body grip portion 36; have.

The top surface portion 51 is formed in a rectangular shape (rectangular shape) in plan view. In the example shown in FIG. 3, the top surface portion 51 has a shape in which four corners are chamfered.

The lid peripheral wall portion 52 is formed continuously to the outer edge of the top surface portion 51. The lid peripheral wall portion 52 is formed so as to be inclined outward as it goes downward. As shown in FIG. 3 and FIG. 5, peripheral wall recesses 52 A that are recessed inward are provided at positions corresponding to the four corners of the lid 5 in the lid peripheral wall 52. The peripheral wall recess 52A extends in the up-down direction. In the present embodiment, the peripheral wall recess 52 A is formed over the entire vertical region of the lid peripheral wall 52. The strength of the lid body peripheral wall part 52 can be improved by the peripheral wall recessed part 52A, and the lid body 5 can be prevented from being bent by an external force.

及び As shown in FIGS. 3 and 5 to 7, the lid flange portion 53 extends outward from the lower end of the lid peripheral wall portion 52 along the horizontal direction. In the present embodiment, the lid 5 has a lid skirt 54 extending downward from the outer end of the lid flange 53. The lid skirt 54 is formed over the entire circumference of the lid 5. The lid skirt portion 54 is formed with a lid bulging portion 54A that bulges outward over the entire circumference of the lid 5. In the present embodiment, the lid reverse taper portion 55 is formed below the lid bulge 54A so as to be continuous with the lid bulge 54A. The lid inversely tapered portion 55 is formed so as to be inclined inward as going downward.

示す As shown in FIG. 3, in the present embodiment, the lid reverse taper portion 55 is formed intermittently on the outer periphery of the lid 5. The lid inversely tapered portion 55 is provided over substantially the entire area of the lid opening area 11 (target corner 1X), and a plurality of lid sides 5S are provided in areas other than the lid opening area 11 on the outer periphery of the container. Are independently provided in the middle part 5M of at least one lid side part 5S.

In the present embodiment, the lid inversely tapered portion 55 is provided at the intermediate portion 5M of the lid long side 5SL. Further, the lid long side portion 5SL is also provided with a lid reverse taper portion 55 at each of both end portions 5E. In the illustrated example, the lid reverse taper portion 55 is also provided on the lid short side 5SS, and more specifically, on both ends 5E of the lid short side 5SS. Note that the lid reverse taper portion 55 is not provided in the intermediate portion 5M of the lid short side 5SS. Therefore, in this example, the lid reverse taper portion 55 is provided independently at both ends 5E and the intermediate portion 5M of the pair of lid long sides 5SL of the rectangular lid 5, and the pair of lids The short side 5SS is provided only at each end 5E.

As shown in FIGS. 3 and 5, the lid knob 56 is formed continuously with the lid flange 53 via the lid skirt 54, and protrudes outward from the lid flange 53. In the present embodiment, the lid knob 56 is disposed at two corners, which are the target corners 1X, of the four corners of the lid 5, and is not disposed at the other two corners that are not the target corners 1X. In the example shown in FIG. 3, the lid knob 56 is formed in a substantially triangular shape in plan view. As shown in FIG. 5, in the present embodiment, the lid knob 56 extends outward from the lower end of the lid skirt 54 along the horizontal direction. In the present embodiment, the lid knob 56 is provided with a lid knob surface 56A formed in a planar shape and a lower protrusion 56B protruding downward from the lid knob surface 56A.

(3) As shown in FIG. 3, an opening area 11 (see also FIG. 5) serving as a starting point when removing the lid 5 from the container body 3 is provided on the outer periphery of the container. As described above, of the four corners of the rectangular container body 3 and the lid 5, two corners arranged diagonally are the target corner 1 X and the open area 11. The other two corners that are not the target corner 1X are the non-covered areas 12 where the main body knob 36 and the lid knob 56 are not overlapped. In the lid opening region 11, the lid knob 56 and the main body knob 36 are overlapped with the lid knob 56 disposed above the main body knob 36. In a state where the main body knob 36 and the lid knob 56 are overlapped with each other, as shown in FIG. 5, the upper protrusion 36B of the main body knob 36 and the lower protrusion 56B of the lid knob 56 come into contact with each other. As a result, a gap is formed between the main body gripping surface portion 36A and the lid body gripping surface portion 56A. This makes it easy to pinch the lid knob 56 when the lid is opened.

[Reverse taper engagement part]
As shown in FIG. 3, the reverse taper engagement portion 15 in which the main body reverse taper portion 35 (see FIG. 4 and the like) and the lid reverse taper portion 55 are engaged with each other over substantially the entire region of the lid opening region 11. In a region other than the lid opening region 11 on the outer periphery of the container, it is independently provided in the middle portion 1M of at least one of the sides of the rectangular container body 3 and the lid 5. Then, as described above, in the present embodiment, the two corners of the four corners of the rectangular container body 3 and the lid 5 that are not the target corners 1X do not overlap the body knob 36 and the lid knob 56. The area is a non-covered area 12. The reverse taper engagement portions 15 are provided in all the open areas 11 and all the non-open areas 12. Thus, the reverse taper engagement portions 15 are provided at the four corners of the container body 3 and the lid 5. Thus, the entire container body 3 and the entire lid 5 can be fitted in a well-balanced manner.

The reverse taper engagement portion 15 is provided over substantially the entire region in all the open regions 11 and all the non-open regions 12. As shown in FIGS. 5 and 6, in the reverse taper engagement portion 15, the lid reverse taper portion 55 is engaged with the main body reverse taper portion 35 from outside.
And, as described above, the lid reverse taper portion 55 and the main body reverse taper portion 35 are formed so as to be inclined inward as going downward. For this reason, the reverse taper engagement portion 15 formed by these engagements is also inclined inward toward the lower side. In the example shown in FIGS. 5 and 6, the reverse taper engagement portion 15 is inclined so that the angle formed with the vertical line is θ. “Θ” is preferably, for example, 30 ° to 90 °. With the above configuration, the lid 5 is configured to be hard to come off from the container body 3 in a state where no external force is applied.

Further, as shown in FIG. 5, when the lid 5 is fitted to the container main body 3, it is necessary to push the lid inversely tapered portion 55 from above to the main body bulging portion 34A. The body 5 is required to have a strength that can withstand pushing. As described above, in the present embodiment, the positions corresponding to the four corners of the lid 5 in the lid peripheral wall 52, more specifically, the reverse taper engagement portions provided in the open area 11 and the non-open area 12. Immediately above the position 15, a peripheral wall recess 52 A that is recessed inward is provided (see FIGS. 3 and 5). Thereby, since the strength of the lid peripheral wall portion 52 and, by extension, the lid 5 is improved, the lid 5 is not easily bent even when pushed in at the time of fitting.

As described above, the reverse taper engagement portion 15 is independently provided in at least one intermediate portion 1M of the sides of the rectangular container body 3 and the lid 5. In this embodiment, the reverse taper engagement portion 15 is provided at the intermediate portion 1M of each of the long sides 3SL and 5SL of the container body 3 and the lid 5 (the packaging container 1). Further, on each of the long side portions 3SL and 5SL of the container body 3 and the lid 5 (packaging container 1), an inverse taper engagement portion 15 is provided also at each of both end portions 1E. In the illustrated example, the reverse taper engagement portion 15 is also provided on each of the short sides 3SS and 5SS of the container body 3 and the lid 5 (the packaging container 1). It is provided at both ends 1E of 3SS and 5SS. In addition, the reverse taper engagement part 15 is not provided in the intermediate part 1M of each short side part 3SS, 5SS of the container main body 3 and the lid 5 (packaging container 1).
Therefore, in this example, the reverse taper engagement portion 15 is provided independently at both ends 1E and the intermediate portion 1M of the pair of long sides 3SL and 5SL of the rectangular container body 3 and the lid 5. The pair of short sides 3SS, 5SS are provided only at both ends 1E.

According to the packaging container 1 described above, a configuration in which the container main body 3 and the lid 5 can be firmly fitted by the engagement of the main body reverse taper portion 35 and the lid reverse taper portion 55 can be realized. Further, with such a configuration, a certain amount of force is required at the time of opening and closing the lid, and a load is applied to the container body 3. However, in the packaging container 1, since the rigidity of the container body 3 can be increased by the inner peripheral rib portion 32 A provided on the main body peripheral wall portion 32, a load is applied to the container body 3 when the lid is opened or closed. Even in this case, the container body 3 can be made hard to bend.

[Other embodiments]
(1) In the above embodiment, of the four corners of the rectangular container body 3 and the lid 5, two corners arranged diagonally are set as the target corner 1 X and the open area 11. An example has been described in which the other two corners, which are not the corners 1X, are the non-opening regions 12 in which the main body knob 36 and the lid knob 56 are not overlapped. However, the present invention is not limited to such an example. All four corners of the rectangular container body 3 and the lid 5 may be the target corners 1X and the lid open area 11. Alternatively, only one corner of the rectangular container body 3 and the lid 5 may be the target corner 1 X and the lid open area 11.

(2) In the above embodiment, the example in which the positioning rib 38 and the display 39 are formed on the bottom surface 31 has been described. However, the positioning rib portion 38 and the display portion 39 are not essential components, and at least one of them may not be formed on the bottom portion 31.

(3) In the above embodiment, the example in which the main body reverse taper portion 35 is formed intermittently on the outer periphery of the container main body 3 has been described. However, the present invention is not limited to such an example.
The main body reverse taper portion 35 may be formed over the entire outer circumference of the container main body 3. Similarly, the lid reverse taper portion 55 is not limited to the example formed intermittently on the outer circumference of the lid 5 and may be formed over the entire circumference of the outer circumference of the lid 5. . Reverse taper engagement portions 15 in which the main body reverse taper portion 35 and the lid reverse taper portion 55 are engaged with each other are provided over substantially the entire region in the cover opening region 11, and the cover opening region 11 on the outer periphery of the container. In a region other than the above, the main body reverse taper portion 35 and the lid reverse taper portion 55 are formed so as to be independently provided in the intermediate portion 1M of at least one side of the sides of the rectangular container main body 3 and the lid 5. It only has to be decided.

(4) The configurations disclosed in the above embodiments can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction occurs. Regarding other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be appropriately made without departing from the spirit of the present disclosure.

技術 The technology according to the present disclosure can be used for a packaging container including a container body and a lid.

1: Packaging container 1M: Intermediate portion 1X of each side of packaging container 1X: Target corner 3: Container main body 3S: Main body side portion 3M: Intermediate portion 5 of main body side portion 5: Lid 5S: Lid side 5M: Intermediate part 11 of lid side part: open area 12: non-open area 15: reverse taper engagement part 31: bottom part 31A: mounting part 31B: first bottom groove (bottom groove)
32: Body peripheral wall 32A: Inner rib 33: Body flange 35: Inverted taper 38: Positioning rib 39: Display 51: Top surface 52: Cover peripheral wall 52A: Peripheral wall recess 53: Cover flange Part 55: Lid reverse taper part 56: Lid knob

Claims

A packaging container comprising a container body and a lid, formed by sheet molding,
The container body and the lid are formed in a rectangular shape in plan view,
The container body includes a bottom portion, a main body peripheral wall portion extending upward from the bottom portion, a main body flange portion extending outward from the main body peripheral wall portion, and a main body reverse taper portion provided on a peripheral side of the main body flange portion. And a main body knob formed of a protruding piece protruding outward from the main body flange,
The lid is provided on a top surface portion, a lid peripheral wall portion extending downward from the top surface portion, a lid flange portion extending outward from the lid peripheral wall portion, and provided on a peripheral side with respect to the lid flange portion. A lid body reverse taper portion that engages with the main body reverse taper portion, and a lid body grip portion that is composed of a projecting piece that protrudes outward from the lid body flange portion and is overlapped with the main body grip portion,
An opening area where the main body knob and the lid knob are overlapped is provided on the outer periphery of the container,
Of the four corners of the rectangular container body and the lid, at least one corner is a target corner, and the target corner is the open area,
In the main body peripheral wall portion, at a portion corresponding to the target corner portion, an inner peripheral rib portion convex toward the inside of the container is provided,
A reverse taper engagement portion formed by engaging the main body reverse taper portion and the lid reverse taper portion is provided over substantially the entire region in the cover opening region, and other than the cover opening region on the outer periphery of the container. A packaging container that is independently provided at an intermediate portion of at least one of the sides of the rectangular container body and the lid in the region.
Of the four corners of the rectangular container body and the lid, two corners arranged diagonally are the target corners and the lid opening area, and the remaining two corners are the body knobs. And the lid knob is a non-opening area where the lid knob is not overlapped,
The packaging container according to claim 1, wherein the reverse taper engagement portion is provided in all of the open regions and all of the non-open regions.
The packaging container according to claim 1 or 2, wherein a positioning rib portion for positioning an object to be accommodated in the container is formed to protrude upward from the bottom portion.
包装 The packaging container according to any one of claims 1 to 3, wherein a display portion serving as a guide when serving items to be accommodated in the container is formed on the bottom portion.
The bottom surface portion has a mounting portion on which an object is mounted, and a bottom groove portion provided at an outer edge of the mounting portion and recessed downward,
A positioning rib portion for positioning an object to be placed on the placement portion is formed to protrude upward from the placement portion, and extends continuously to the bottom groove portion,
5. The packaging container according to claim 4, wherein the display unit is formed to protrude upward or to be recessed downward from the placement unit, and extend continuously to the bottom groove.