JP6803952B1 - Packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container which can prevent the lid from being inadvertently removed, can easily close the lid, and can be easily opened by a consumer. SOLUTION: A substantially rectangular container body 1 has a body hanging portion 14 on the outside of an opening, and a lid 2 has a lid hanging portion 24 overlapping the outside of the main body hanging portion 14 in a closed state. Main body protrusions 34 and 35 for projecting outward and maintaining the closed state are formed in the vicinity of the corner portion 142 of the hanging portion 14, and inward in the vicinity of the corner portion 242 of the lid hanging portion 24. Lid protrusions 44 and 45 for projecting toward and maintaining the closed state are formed, and in the closed state, the lid protrusions 44 and 45 are located below the main body protrusions 34 and 35 and the main body. By arranging the protrusions 34, 35 and the lid protrusions 44, 45 so as to be displaced from each other in the horizontal direction, only a part thereof is overlapped with each other in the vertical direction, not the total length in the horizontal direction. [Selection diagram] Fig. 1

Description

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

In recent years, the population living alone has increased. In particular, it takes time and effort to make prepared foods and bento boxes for one person. Therefore, there is an increasing demand to buy these at convenience stores and supermarkets. These prepared foods and lunch boxes are cooked in the backyard of each store and then packaged and provided, or cooked at a dedicated factory and packaged in a container and transported to each store for display. Has been done. In such a container, the lid may be inadvertently removed during display or transportation. Therefore, usually, the container body and the lid are further fixed with adhesive tape to prevent them.

However, it is troublesome to further fix the container body and the lid with the adhesive tape after packaging each food material in the container. In addition, recently, due to the shortage of human resources to perform these tasks and the soaring prices of raw materials, there is a demand for a container whose lid cannot be removed even when tape is not used.

For example, in Patent Document 1 below, in a substantially rectangular packaging container, a main body bulging portion and a main body reverse taper portion continuous to the lower side thereof are formed over the entire circumference of the skirt portion of the container main body. When covering the container body with the lid, it is necessary for the lid reverse taper portion to forcibly overcome the main body bulging portion downward over the entire length in the horizontal direction and fit with the main body reverse taper portion. .. Therefore, when the lid is closed, the reverse taper portion has a large force when it gets over the bulging portion of the main body, and it is difficult to close the lid when cooking and packaging in a store. In addition, when food is cooked in a dedicated factory and packaged in a container, there may be a problem that an automatic lid closing machine causes a lid closing failure. Furthermore, there is a problem that it is difficult for the consumer who purchased the lid to open the lid because the lid is tightly closed.

Further, in Patent Document 2 below, in a substantially rectangular packaging container, the skirt portion of the container body is provided with a fitted portion recessed toward the inner surface side, and the skirt portion of the lid is provided on the inner surface side. A container provided with a fitting portion protruding toward the surface is disclosed. The fitted portion of the container body and the fitted portion of the lid are in a positional relationship corresponding to each other and are set to have the same length. Then, when the lid is closed, the fitting portion of the lid is fitted to the fitting portion of the container body. Also in this container, since the entire fitting portion of the lid is fitted into the entire fitting portion of the container body, there is a problem that the lid is tightly closed and difficult to open when the consumer opens the lid. ..

Further, Patent Document 3 below describes a configuration in which a screw portion of the main body and a screw portion of the lid are engaged by twisting the lid in the circumferential direction with respect to the main body in a circular container. However, the configuration in which the lid is slid with respect to the main body in the circumferential direction to engage the screw portions with each other is a configuration that can be adopted only in a circular container, and cannot be physically adopted in a rectangular container.

Japanese Patent No. 6371023 JP-A-2019-43565 Special Table 2007-532417

An object of the present invention is to provide a packaging container which can prevent the lid from being inadvertently removed, can easily close the lid, and can be easily opened by a consumer.

The packaging container according to the present invention includes a substantially rectangular container body having an opening opened on the upper side and a lid that covers the container body and closes the opening of the container body, and the container body is outside the opening. The lid has a lid hanging portion that overlaps the outside of the main body hanging portion when the lid is closed, and the lid projects outward in the vicinity of the corner portion of the main body hanging portion to maintain the closed state. A main body protrusion is formed for the lid, and a lid protrusion is formed in the vicinity of the corner of the lower part of the lid to project inward and maintain the closed state. In the closed state, the lid protrusion is formed. , The main body protrusion and the lid protrusion are located below the main body protrusion, and by arranging the main body protrusion and the lid protrusion with their positions shifted in the horizontal direction, not the total length in the horizontal direction but only a part of them overlap each other in the vertical direction. It becomes.

According to this configuration, the lid protrusion and the main body protrusion are partially overlapped in the vertical direction in the closed state, so that the force for covering the container main body during the lid closing operation can be small. Then, in the closed state, the lid protrusion is located below the main body protrusion and partially overlaps in the vertical direction, so that the lid protrusion is caught by the main body protrusion when the lid is about to come off. Therefore, it is possible to prevent the lid from being inadvertently removed without fixing the lid and the container body with tape. Further, in the closed state, the lid protrusion and the main body protrusion do not overlap in the vertical direction over the entire length in the horizontal direction, but only partially overlap, so that the lid can be easily opened when the lid is opened. ..

In particular, it is preferable that the lid protrusions are arranged so as to be displaced toward the corners with respect to the main body protrusions in the closed state. According to this configuration, the lid can be more smoothly covered by the container body during the lid closing operation. In the closed state, the portion of the horizontal length of the main body protrusion on the corner portion side and the portion of the horizontal length of the lid protrusion on the side center portion side overlap each other in the vertical direction. The corner portion side is the side edge portion side, and the side center portion side is the anti-corner portion side.

Further, in the vicinity of both side ends of each side of the lower part of the main body, a plurality of main body protrusions are arranged side by side at intervals in the horizontal direction to form a row of main body protrusions. In the vicinity of both side ends, a plurality of lid protrusions are arranged side by side at intervals in the horizontal direction to form a lid protrusion row, and in the closed state, the lid protrusion row is on the corner side with respect to the main body protrusion row. The lid protrusion overlaps with the main body protrusion corresponding to the lid protrusion at the end on the center side of the side, and the lid protrusion overlaps with the main body corresponding to the lid protrusion at the end on the corner side. It is preferable that the protrusion overlaps with the main body protrusion located next to the corner portion side of the protrusion. According to this configuration, the lid can be more smoothly covered by the container body during the lid closing operation. Then, in the closed state, the lid protrusion rows are arranged so as to be offset from the corner portion side with respect to the main body protrusion row, and both ends in the horizontal direction of the lid protrusions are the main body protrusions corresponding to the lid protrusions and their respective. Since it overlaps with the protrusion of the main body next to the corner side, careless removal of the lid is effectively prevented. Moreover, when opening the lid, the lid can be easily opened.

Further, it is preferable that the main body protrusion has a shape in which the upper edge is lowered toward the corner portion and the vertical dimension is reduced. According to this configuration, it becomes easier to close the lid and the closed state is maintained.

Further, it is preferable that the main body protrusion has a shape in which the protrusion height decreases toward the corner portion side. According to this configuration, it is easier to close the lid.

As described above, in the packaging container according to the present invention, the lid closing operation can be easily performed, and the lid can be inadvertently removed without fixing the lid and the container body with tape in the closed state. And the lid can be easily opened by the consumer.

The perspective view which shows the open state of the packaging container in one Embodiment of this invention. Enlarged view of the main part of FIG. A partially enlarged view of the opened state of the packaging container as viewed from the long side. A partially enlarged cross-sectional view of the long side showing the opened state of the packaging container. Top view of the container body of the packaging container. Enlarged view of the main part of FIG. Front view of the container body as seen from the long side. Side view of the container body as viewed from the short side. The figure which looked at the main body protrusion of the container body from the front. (A) is a view of the main body protrusion seen from the AA side of FIG. 9, and (b) is a view of the main body protrusion seen from the BB side of FIG. Top view of the lid of the packaging container. Front view of the lid as seen from the long side. Side view of the lid as seen from the short side. The figure which looked at the lid protrusion of the lid from the front. (A) is a schematic cross-sectional view taken along the line CC of FIG. 14, and (b) is a view seen from the DD side of FIG. The front view which shows the closed state of the packaging container as seen from the long side side. FIG. 16 is an enlarged view of a main part. A side view showing the closed state of the packaging container as seen from the short side. An enlarged view of a main part of FIG. A partially enlarged cross-sectional view corresponding to FIG. 4 showing a closed state of the packaging container. A cross-sectional perspective view of a long side showing a closed state of the packaging container. A front view of the packaging container as seen from the long side showing the state in which the lid is being closed. A side view of the packaging container as viewed from the short side showing the state in which the lid is being closed. It is a figure which shows the relationship between the main body protrusion and the lid protrusion in the long side portion of the packaging container, (a) shows the state in the middle of closing a lid, and (b) shows the state of closing a lid. It is a figure which shows the relationship between the main body protrusion and the lid protrusion in the short side portion of the packaging container, (a) shows the state in the middle of closing a lid, and (b) shows the state of closing a lid. (A) to (c) are views of the main body protrusion of the packaging container according to another embodiment of the present invention as viewed from the front. An enlarged plan view of a main part of a container body of a packaging container according to another embodiment of the present invention. (A) and (b) are views corresponding to FIG. 24 showing the relationship between the main body protrusion and the lid protrusion of the packaging container in another embodiment of the present invention. (A) and (b) are views corresponding to FIG. 24 showing the relationship between the main body protrusion and the lid protrusion of the packaging container in another embodiment of the present invention.

Hereinafter, the packaging container according to the embodiment of the present invention will be described with reference to FIGS. 1 to 25. The container in this embodiment is for accommodating various foods. The shape of the container in a plan view is substantially rectangular, and in the present embodiment, it is a substantially rectangular shape in a plan view. Each side may or may not bulge outward in a plan view. In addition, the presence or absence of a corner cut shape at each corner portion is also arbitrary. The container includes a container body 1 and a lid 2. The container body 1 has an opening that opens upward. The lid 2 covers the container body 1 and closes the opening of the container body 1.

Both the container body 1 and the lid 2 are formed from a synthetic resin sheet by various thermoforming (sheet molding) such as vacuum forming and compressed air forming. Various synthetic resin sheets can be used for the container body 1 and the lid 2. The synthetic resin sheet is composed of, for example, a polyester resin such as polyethylene terephthalate, a styrene resin such as polystyrene, and a polyolefin resin such as polypropylene. Further, a stretched sheet obtained by stretching these sheets uniaxially or biaxially is also preferable. Among these sheets, when a sheet having excellent transparency is used for the lid 2, the contained food can be visually recognized, which is preferable.

<Container body 1>
The container body 1 is substantially rectangular in plan view, and in the present embodiment, is substantially rectangular in plan view. The container main body 1 includes a bottom surface portion 10, a main body side surface portion 11 extending upward from the outer edge of the bottom surface portion 10 while expanding upward, and a main body flange portion extending outward from the upper end of the main body side surface portion 11. There is. The bottom surface portion 10 is substantially rectangular in plan view. Legs (not shown) having various shapes may be provided on the bottom surface 10. In order to prevent a so-called blocking phenomenon in which the container bodies 1 are tightly fitted to each other and cannot be removed when a large number of container bodies 1 are stacked on the side surface portion 11 of the main body during collection, a convex portion or a concave portion for preventing blocking is formed. (Not shown) may be provided. The convex portions and concave portions for preventing blocking are arranged so that their positions are shifted for each container body 1. Various reinforcing ribs may be provided on the side surface portion 11 of the main body. The upper end of the side surface portion 11 of the main body is an opening edge portion. The opening is substantially rectangular in plan view. The main body flange portion is located outside the opening. The main body flange portion is formed over the entire circumference of the opening edge portion.

<Body flange>
The main body flange portion includes a main body flange upper surface portion 13 extending substantially horizontally from the upper end of the main body side surface portion 11 toward the outside, a main body hanging lower portion 14 hanging downward from the outer edge of the main body flange upper surface portion 13, and a main body hanging portion. It is provided with a main body edging portion 15 extending substantially horizontally from the lower end of the portion 14 toward the outside. The main body hanging portion 14 has four side portions 140 and 141 and four corner portions 142. In the present embodiment, since the container is substantially rectangular in a plan view, the hanging portion 14 of the main body has two long side portions 140 and two short side portions 141. The corner portion 142 is located between the adjacent long side portion 140 and the short side portion 141. In the present embodiment, the corner portion 142 has a corner cut shape that is cut diagonally in a plan view as shown in FIGS. 5 and 6, but has a rounded corner shape that is curved in an arc shape in a plan view as shown in FIG. 27. You may. The main body edging portion 15 may be provided with a main body picking portion 150 having various shapes to facilitate the lid opening operation. In the present embodiment, a substantially triangular main body knob portion 150 is formed on the outside of each corner portion 142 of the main body hanging portion 14, but the arrangement and number thereof are arbitrary.

The upper surface and the lower surface of the main body edging portion 15 may be subjected to fine uneven processing or embossing to form an uneven shape. By forming the unevenness on the main body edging portion 15, the main body edging portion 15 is reinforced, and even if a finger or the like hits, the finger or the like can be prevented from being cut. This unevenness has a wavy shape when viewed from the front, for example, and the directions of many peaks and valleys are formed short in the width direction on each side, and the direction connecting the corners and the center at the corners ( It is formed parallel to the radial direction). Further, the unevenness is preferably formed by knurled eyes such as flatfish knurled eyes and twill knurled eyes, and further preferably formed by knurled eyes to prevent slipping.

<Main body protrusion>
A main body protrusion for maintaining the closed lid state is formed on the main body hanging portion 14. The main body protrusion protrudes outward, that is, toward the outer surface side. The main body protrusion is formed on the upper part of the main body hanging portion 14. The corner portion 142 may be formed with a streak-shaped main body protrusion 30 extending in the horizontal direction. The streaky main body protrusion 30 of the corner portion 142 may be divided into a plurality of parts. In the present embodiment, the streak-shaped main body protrusion 30 is divided into three portions, and is composed of a central divided portion (reference numeral 30) and divided portions 32 and 33 located on both sides thereof.

A strip-shaped main body protrusion 31 extending in the horizontal direction may be formed in the central portion of the long side portion 140. Although no streak-shaped body protrusion is formed in the center of the side of the short side portion 141, the streak-shaped main body is also formed in the center of the side of the short side portion 141 as in the center of the side of the long side portion 140. Protrusions may be formed.

<Main body protrusion row 340 of long side 140>
Island-shaped main body protrusions 34a, 34b, 34c, and 34d are formed in the vicinity of both side ends of the long side portion 140, respectively. The island-shaped main body protrusions 34a, 34b, 34c, and 34d may be collectively referred to as an island-shaped main body protrusion 34. The island-shaped main body protrusions 34a, 34b, 34c, and 34d are located in the vicinity of the corner portion 142. The island-shaped main body protrusions 34a, 34b, 34c, and 34d are located in the vicinity of the streak-shaped main body protrusion 30 of the corner portion 142, and are located at intervals from the streak-shaped main body protrusion 30. The island-shaped main body protrusions 34a, 34b, 34c, and 34d are shorter in the horizontal direction than the streak-shaped main body protrusions 31 at the center of the side. A plurality of island-shaped main body protrusions 34a, 34b, 34c, 34d are formed at regular intervals in the horizontal direction.

The number of island-shaped main body protrusions 34a, 34b, 34c, 34d is arbitrary, but in the present embodiment, four island-shaped main body protrusions 34a, 34b, 34c, 34d are formed in the vicinity of both side ends. Has been done. When the long side portion 140 is viewed from the front, the island-shaped main body protrusions 34a, 34b, 34c, and 34d are arranged symmetrically. The four island-shaped main body protrusions 34a, 34b, 34c, 34d are arranged in a row along the horizontal direction, and the four island-shaped main body protrusions 34a, 34b, 34c, 34d are grouped together. It constitutes the main body protrusion row 340. The main body protrusion row 340 is arranged away from the streaky main body protrusion 31 at the center of the side.

<Main body protrusion row 350 of short side portion 141>
Similarly, a plurality of island-shaped main body protrusions 35a, 35b, and 35c are formed at regular intervals in the horizontal direction in the vicinity of both side ends of the short side portion 141. The island-shaped main body protrusions 35a, 35b, and 35c may be collectively referred to simply as the island-shaped main body protrusions 35. The island-shaped main body protrusion 35 on the short side portion 141 and the island-shaped main body protrusion 34 on the long side portion 140 may have the same shape or different shapes, but in the present embodiment, they are the same. The shape. In the present embodiment, three island-shaped main body protrusions 35a, 35b, and 35c are formed in the vicinity of both side ends of the short side portion 141, and the short side portion 141 is formed from the long side portion 140. The number is small. However, for example, the long side portion 140 and the short side portion 141 may have the same number. When the short side portion 141 is viewed from the front, island-shaped main body protrusions 35a, 35b, and 35c are arranged symmetrically. In the vicinity of the side edge of the short side portion 141, the three island-shaped main body protrusions 35a, 35b, 35c are arranged in a row along the horizontal direction, and the three island-shaped main body protrusions 35a, 35b, 35c are arranged. , As a group, form a group of main body protrusion rows 350. The main body protrusion rows 350 are arranged at intervals next to the streaky main body protrusions 30 of the corner portion 142.

The shapes of the island-shaped main body protrusions 34 and 35 may be various. It is preferable that the island-shaped main body protrusions 34 and 35 have a shape in which the vertical dimension becomes smaller toward the corner portion 142 side. The upper edges of the island-shaped main body protrusions 34 and 35 preferably descend toward the corner portion 142 side. The lower edges of the island-shaped main body protrusions 34 and 35 are preferably substantially horizontal. It is preferable that the island-shaped main body protrusions 34 and 35 have a shape in which the protrusion height decreases toward the corner portion 142 side. The lower protrusion height means that the amount of protrusion of the island-shaped main body protrusions 34 and 35 is reduced. In the present embodiment, the shape of the island-shaped main body protrusion 34 on the long side portion 140 and the shape of the island-shaped main body protrusion 35 on the short side portion 141 are the same as each other, but they may be different from each other. When the lower edges of the island-shaped main body protrusions 34 and 35 are inclined upward toward the corner portion 142, the upper edges of the island-shaped lid protrusions 44 and 45, which will be described later, are the island-shaped main body protrusions. It is preferable to incline according to the shape of the upper edges of 34 and 35.

FIG. 9 shows an enlarged view of an example of the island-shaped main body protrusion 34. In FIG. 9, the front and back directions of the paper surface are the protruding directions of the island-shaped main body protrusions 34. In FIG. 9, the corner portion 142 side is indicated by an arrow P, and the side center portion side (anti-corner portion side) opposite to the corner portion 142 side is indicated by an arrow Q. The island-shaped main body protrusion 34 shown in the figure is formed in the vicinity of the side end portion on the left side when the long side portion 140 is viewed from the front, and the side on the left side when the short side portion 141 is viewed from the front. The one formed near the end has the same shape. The shape formed in the vicinity of the side edge on the right side when the long side portion 140 is viewed from the front is a left-right inverted shape of that in FIG. 9, and the shape on the right side when the short side portion 141 is viewed from the front is Similarly, the shape formed in the vicinity of the edge portion is a left-right inverted shape of that shown in FIG. Further, FIG. 10 shows a view of the protruding shape of the island-shaped main body protrusion 34 as viewed from two directions, from the right side (arrows AA) and from the lower side (arrows BB).

The island-shaped main body protrusion 34 is a substantially triangular shape having the lower side as the base when viewed from the front as shown in FIG. The island-shaped main body protrusion 34 includes a top surface 341 and a plurality of inclined surfaces located around the top surface 341. The top surface 341 may be a substantially flat surface having a constant protrusion height, but in the present embodiment, as shown in FIG. 10B, the protrusion height is a small inclination angle toward the corner portion 142 side. Is a lowered slope. The top surface 341 is a substantially triangular shape with the lower side as the base as a whole, and the vertical dimension of the top surface 341 is gradually reduced toward the corner portion 142 side.

The inclined surface is composed of a lower inclined surface 342, a side inclined surface 343, a first upper inclined surface 344, and a second upper inclined surface 344b. The lower inclined surface 342, the side inclined surface 343, the first upper inclined surface 344a, and the second upper inclined surface 344b each gradually increase in projecting height toward the top upper surface 341. The lower inclined surface 342 has an island-shaped main body protrusion 34 lower edge 346. The lower edge 346 of the island-shaped main body protrusion 34 extends along a substantially horizontal direction. The protruding height of the lower inclined surface 342 gradually decreases toward the lower side. The side inclined surface 343 constitutes a portion of the island-shaped main body protrusion 34 near the end on the side center side. The side inclined surface 343 has a side edge 347 on the side central portion side of the island-shaped main body protrusion 34. The side edge 347 on the side central portion side of the island-shaped main body protrusion 34 extends substantially in the vertical direction. The protruding height of the side inclined surface 343 gradually decreases toward the center side.

The first upper inclined surface 344a and the second upper inclined surface 344b have upper edges 348a and 348b of the island-shaped main body protrusion 34. The upper edges 348a and 348b of the island-shaped main body protrusion 34 gradually descend toward the corner portion 142 side. The first upper inclined surface 344a has a first upper edge 348a of the island-shaped main body protrusion 34, and the second upper inclined surface 344b has a second upper edge 348b of the island-shaped main body protrusion 34. The first upper edge 348a descends toward the corner 142 side with a relatively small gradient, and the second upper edge 348b descends toward the corner 142 side with a larger gradient than the first upper edge 348a. There is. The first upper edge 348a is curved toward the lower side, but may be curved toward the upper side or may be a straight line. The second upper edge 348b is straight but may be curved. The first upper inclined surface 344a and the second upper inclined surface 344b gradually decrease in projecting height toward the upper side and gradually decrease toward the corner portion 142 side. That is, the protrusion heights of the first upper inclined surface 344a and the second upper inclined surface 344b gradually decrease toward the diagonally upper side on the corner portion 142 side. As described above, the island-shaped main body protrusion 34 in the present embodiment has a shape in which the protrusion height decreases toward the corner portion 142 side due to the top surface 341, the first upper inclined surface 344a, and the second upper inclined surface 344b. ing.

Another example of the island-shaped main body protrusion 34 is shown in FIG. As shown in FIG. 26A, the first upper edge 348a may be formed in an L shape. As shown in FIGS. 26 (b) and 26 (c), the configuration may include only one upper inclined surface 344. The upper edge 348 may be curved upward as shown in FIG. 26 (b), or the upper edge 348 may be a straight line as shown in FIG. 26 (c).

<Lid 2>
The lid 2 has a shape corresponding to the container body 1 and is substantially rectangular in plan view, and in the present embodiment, is substantially rectangular in plan view. The lid 2 is preferably transparent, and the food contained in the container can be visually recognized from the outside through the lid 2. The lid 2 includes a top surface portion 20, a lid side surface portion 21 extending downward from the outer edge of the top surface portion 20, and a lid flange portion extending outward from the lower end of the lid side surface portion 21. I have. The central main portion of the top surface portion 20 may be formed substantially flat without unevenness. A protrusion for preventing misalignment may be provided on the peripheral edge of the top surface portion 20 so as to prevent the containers from being displaced in the horizontal direction when the containers in the closed lid state are stacked and displayed.

In order to prevent a so-called blocking phenomenon in which the lids 2 are tightly fitted to each other and cannot be removed when a large number of lids 2 are stacked on the lid side surface portion 21 at the time of collection, a convex portion or a concave portion for blocking prevention (not shown). Omitted) may be provided. The convex portions and concave portions for preventing blocking are arranged so that their positions are shifted for each lid 2. Various reinforcing ribs may be provided on the lid side surface portion 21. The lid flange portion is formed over the entire circumference.

<Lid flange part>
The lid flange portion includes a lid flange upper surface portion 23 extending substantially horizontally from the lower end of the lid side surface portion 21 toward the outside, a lid hanging lower portion 24 that hangs downward from the outer edge of the lid flange upper surface portion 23, and a lid hanging portion. A lid edging portion 25 extending substantially horizontally from the lower end of the portion 24 to the outside is provided. The lower lid 24 has four side portions 240 and 241 and four corner portions 242. In the present embodiment, since the container is substantially rectangular in a plan view, the lid lower portion 24 has two long side portions 240 and two short side portions 241. The corner portion 242 is located between the adjacent long side portion 240 and the short side portion 241. In the present embodiment, the corner portion 242 has a corner cut shape that is cut diagonally in a plan view as shown in FIG. 11, but may be curved in an arc shape in a plan view.

The lid edging portion 25 may be provided with a lid picking portion 250 having various shapes to facilitate the lid opening operation. The lid picking portion 250 may be provided at a position corresponding to the main body picking portion 150. In the present embodiment, a substantially triangular lid knob portion 250 is formed on the outside of each corner portion 242 of the lid lower portion 24, but the arrangement and the number thereof are arbitrary. The upper surface and the lower surface of the lid edging portion 25 may be subjected to fine uneven processing or embossing to form an uneven shape. By forming the unevenness on the lid edging portion 25, the lid edging portion 25 can be reinforced and the finger or the like can be prevented from being cut even if the finger or the like hits the lid edging portion 25. This unevenness has a wavy shape when viewed from the front, for example, and the directions of many peaks and valleys are formed short in the width direction on each side, and the direction connecting the corners and the center at the corners ( It is formed parallel to the radial direction). Further, the unevenness is preferably formed by knurled eyes such as flatfish knurled eyes and twill knurled eyes, and further preferably formed by knurled eyes to prevent slipping.

<Lid protrusion>
The lower part of the lid 24 is formed with a lid protrusion for maintaining the closed state in cooperation with the main body protrusion. The lid protrusion protrudes inward, that is, toward the inner surface side. The lid protrusion is formed in the lower part of the lid lower portion 24. The lid protrusion is formed at a position corresponding to the main body protrusion. The corner portion 242 may be formed with a streak-shaped lid protrusion 40 extending in the horizontal direction. The streak-shaped lid protrusion 40 of the corner portion 242 may be divided into a plurality of parts. In the present embodiment, the streak-shaped lid protrusion 40 is divided into three portions, and is composed of a central divided portion (reference numeral 40) and divided portions 42 and 43 located on both sides thereof.

A streaky lid protrusion 41 extending in the horizontal direction is formed in the central portion of the long side portion 240. The horizontal length of the streak-shaped lid protrusion 41 at the center of the long side portion 240 is substantially equal to the horizontal length of the corresponding streak-shaped main body protrusion 31. Although a streak-shaped lid protrusion is not formed on the central side of the short side portion 241, a streak-shaped lid protrusion may be formed on the short side portion 241 as well as the long side portion 240.

<Lid protrusion row 440 of long side 240>
Island-shaped lid protrusions 44a, 44b, 44c, and 44d are formed in the vicinity of both side ends of the long side portion 240, respectively. The island-shaped lid protrusions 44a, 44b, 44c, 44d may be collectively referred to simply as the island-shaped lid protrusions 44. The island-shaped lid protrusions 44a, 44b, 44c, 44d are located in the vicinity of the corner portion 242. The island-shaped lid protrusions 44a, 44b, 44c, 44d are located in the vicinity of the streak-shaped lid protrusion 40 of the corner portion 242, and are located at intervals from the streak-shaped lid protrusion 40. The island-shaped lid protrusions 44a, 44b, 44c, 44d are shorter in the horizontal direction than the streak-shaped lid protrusions 41 at the center of the side. A plurality of island-shaped lid protrusions 44a, 44b, 44c, 44d are formed at regular intervals in the horizontal direction.

The number of island-shaped lid protrusions 44a, 44b, 44c, 44d is arbitrary, but in the present embodiment, four island-shaped lid protrusions 44a, 44b, 44c, 44d are formed in the vicinity of both side ends, respectively. Has been done. When the long side portion 240 is viewed from the front, the island-shaped lid protrusions 44a, 44b, 44c, 44d are formed and arranged symmetrically. The four island-shaped lid protrusions 44a, 44b, 44c, 44d are arranged in a row along the horizontal direction, and the four island-shaped lid protrusions 44a, 44b, 44c, 44d are grouped together. It constitutes a lid projection row 440. The lid protrusion row 440 is arranged away from the streaky lid protrusion 41 at the center of the side.

<Lid protrusion row 450 of short side portion 241>
Similarly, a plurality of island-shaped lid protrusions 45a, 45b, 45c are formed in the vicinity of both side ends of the short side portion 241 in the horizontal direction at regular intervals. The island-shaped lid protrusion 45 on the short side portion 241 and the island-shaped lid protrusion 44 on the long side portion 240 may have the same shape or different shapes, but in the present embodiment, they are the same. The shape. In the present embodiment, three island-shaped lid protrusions 45a, 45b, and 45c are formed in the vicinity of both side ends of the short side portion 241, and the short side portion 241 is larger than the long side portion 240. The number is small. However, for example, the long side portion 240 and the short side portion 241 may have the same number. When the short side portion 241 is viewed from the front, island-shaped lid protrusions 45a, 45b, and 45c are formed and arranged symmetrically. In the vicinity of the side edge of the short side portion 241 the three island-shaped lid projections 45a, 45b, 45c are arranged in a row along the horizontal direction, and the three island-shaped lid projections 45a, 45b, 45c are arranged. , As a group, form a group of lid protrusion rows 450. The lid protrusion rows 450 are arranged at intervals next to the streaky lid protrusions 40 at the corner portion 242.

The island-shaped lid protrusions 44, 45 may have various shapes. In the present embodiment, the shape of the island-shaped lid protrusion 44 on the long side portion 240 and the shape of the island-shaped lid protrusion 45 on the short side portion 241 are the same as each other, but they may be different from each other. FIG. 14 shows an enlarged view of an example of the island-shaped lid protrusion 44. In FIG. 14, the front and back directions of the paper surface are the protruding directions of the island-shaped lid protrusions 44.

As shown in FIG. 14, the island-shaped lid protrusion 44 is substantially rectangular when viewed from the front, and more specifically, is substantially rectangular with the horizontal direction as the long side direction. The island-shaped lid protrusion 44 includes a top surface 441 and a plurality of inclined surfaces located around the top surface 441. The top surface 441 may be a substantially flat surface having a constant protrusion height or an inclined surface, but in the present embodiment, the protrusion height is constant as shown in FIG. 15B. The surface is almost flat. The top surface 441 is a substantially rectangular shape with the horizontal direction as the long side direction. The inclined surface is composed of a lower inclined surface 442, a pair of left and right side inclined surfaces 443, and an upper inclined surface 444. The lower inclined surface 442, the pair of left and right side inclined surfaces 443, and the upper inclined surface 444 gradually increase in projecting height toward the top surface 441, in other words, the farther away from the top surface 441. The protruding height is low.

<Lid closing work and lid closing state>
22 and 23 show a state in which the lid is being closed. First, three corners 142 of the four corners 142 of the container body 1 are covered with the corresponding corners 242 of the lid 2. Then, the corner portion 142 of the remaining one container body 1 is floated upward without being covered with the corresponding corner portion 242 of the lid 2. If the corner portion 242 of the lid 2 not covered on the container body 1 is referred to as the final corner portion 242, the lid 2 is in an inclined state with the final corner portion 242 as the apex. The long side portion 240 of the lid 2 is inclined with the final corner portion 242 as the upper side, and the short side portion 241 of the lid 2 is also inclined with the final corner portion 242 as the upper side. After that, the final corner portion 242 of the lid 2 is put on the remaining one corner portion 142 of the container body 1 by pushing the lid 2 from above or the like. At that time, the lid 2 moves downward while being slightly pulled in the horizontal direction toward the outside of the final corner portion 242.

<Closed state>
16 to 21 show the closed state. As shown in FIGS. 20 and 21, the lid flange upper surface portion 23 overlaps the upper side of the main body flange upper surface portion 13 in the closed lid state. The lid flange upper surface portion 23 may be in contact with the upper surface of the main body flange upper surface portion 13, or may face the upper surface with a slight gap. The lid hanging portion 24 overlaps the outside of the main body hanging portion 14. The lid edging portion 25 overlaps the upper side of the main body edging portion 15. Then, the lid protrusion is located below the main body protrusion.

Specifically, the streaky lid protrusions 40 at the corners 242 of the lid 2 are located below the streaky main body protrusions 30 at the corners 142 of the container body 1 and overlap each other in the vertical direction. The streak-shaped lid protrusion 41 at the center of the side of the long side portion 240 of the lid 2 is located below the streak-shaped main body protrusion 31 at the center of the side of the long side portion 140 of the container body 1. It is preferable that the streak-shaped main body protrusion 30 at the corner portion 142 of the container main body 1 and the streak-shaped lid protrusion 40 at the corner portion 242 of the lid 2 overlap in the vertical direction over the entire length in the horizontal direction. Further, the streak-shaped main body protrusion 31 at the center of the side of the long side portion 140 of the container body 1 and the streak-like lid protrusion 41 at the center of the side of the long side portion 240 of the lid 2 move up and down over the entire length in the horizontal direction. It is preferable that they overlap in the direction. Then, the lid protrusion rows 440 and 450 of the lid 2 are arranged below the main body protrusion rows 340 and 350 of the container body 1 with their positions shifted in the horizontal direction.

FIG. 24 shows the relationship between the main body protrusion rows 340 and the lid protrusion rows 440 on the long side portions 140 and 240, and FIG. 25 shows the relationship between the main body protrusion rows 350 and the lid protrusion rows 450 on the short side portions 141 and 241. 24 (a) and 25 (a) show the relationship between the main body protrusion rows 340 and 350 and the lid protrusion rows 440 and 450 in the state in which the lid is closed, and FIGS. 24 (b) and 25 (b) show the relationship. The relationship between the main body protrusion rows 340 and 350 and the lid protrusion rows 440 and 450 in the closed state is shown. In FIGS. 24 and 25, the corner portions 142 and 242 are indicated by arrows P.

In the closed state, only a part of the island-shaped main body protrusions 34 and 35 of the main body protrusion rows 340 and 350 and the island-shaped lid protrusions 44 and 45 of the lid protrusion rows 440 and 450 are in the vertical direction. The total length in the horizontal direction does not overlap in the vertical direction. The lid protrusion rows 440 and 450 are arranged so as to be offset from the corner portions 142 and 242 with respect to the main body protrusion rows 340 and 350, and the island-shaped lid protrusions 44 and 44 are arranged with respect to the island-shaped main body protrusions 34 and 35. The 45 is arranged so as to be displaced from the corner portions 142 and 242.

The main body protrusions 34a, 34b, 34c, 34d of the main body protrusion row 340 in the long side portion 140 are sequentially formed from the corner portion 142 side by the first main body protrusion 34a of the long side portion 140 and the second main body protrusion of the long side portion 140. It is referred to as 34b, the third main body protrusion 34c of the long side portion 140, and the fourth main body protrusion 34d of the long side portion 140, and the respective lid protrusions 44a, 44b, 44c, 44d of the lid protrusion row 440 on the long side portion 240 are cornered. From the side of the portion 242, the first lid projection 44a of the long side portion 240, the second lid projection 44b of the long side portion 240, the third lid projection 44c of the long side portion 240, and the fourth of the long side portion 240. It is called a lid protrusion 44d. The first to fourth main body protrusions 34a, 34b, 34c, 34d of the long side portion 140 correspond to the first to fourth lid protrusions 44a, 44b, 44c, 44d of the long side portion 240, respectively. In the closed state, the first to fourth lid protrusions 44a, 44b, 44c, 44d of the long side portion 240 have the same with respect to the first to fourth main body protrusions 34a, 34b, 34c, 34d of the long side portion 140. , The positions are shifted to the corner portions 142 and 242, respectively.

The portion of the long side portion 240 on the side center side of the first lid protrusion 44a overlaps the portion of the long side portion 140 on the corner portion 142 side of the first main body protrusion 34a in the vertical direction. The portion of the long side portion 240 on the corner portion 242 side of the first lid projection 44a does not overlap with the first main body projection 34a of the long side portion 140 in the vertical direction. Similarly, the portions of the long side portion 240 on the side center side of the second to fourth lid projections 44b, 44c, 44d are the portions of the second to fourth main body projections 34b, 34c, 34d of the long side portion 140, respectively. Although it overlaps with the portion on the corner portion 142 side in the vertical direction, the portion on the corner portion 242 side of the second to fourth lid protrusions 44b, 44c, 44d of the long side portion 240 is the second to third portion of the long side portion 140, respectively. It does not overlap with the four main body protrusions 34b, 34c, 34d in the vertical direction. The ends of the second to fourth lid protrusions 44b, 44c, 44d of the long side portion 240 on the corner portion 242 side are the ends of the first to third main body protrusions 34a, 34b, 34c on the side center side, respectively. And overlap in the vertical direction. For example, as shown in FIG. 24B, the horizontal dimension W2 in which the second lid protrusion 44b of the long side portion 240 overlaps with the second main body protrusion 34b of the long side portion 140 in the vertical direction is the long side portion 240. The second lid protrusion 44b of the above may be larger than the horizontal dimension W1 that overlaps the first main body protrusion 34a of the long side portion 140 in the vertical direction. That is, W2> W1 may be satisfied. However, W2 = W1 or W2 <W1 may be satisfied. The same applies to the third and fourth lid protrusions 44c and 44d of the long side portion 240.

The same applies to the short side portions 141 and 241. The main body protrusions 35a, 35b, 35c of the main body protrusion row 350 in the short side portion 141 are sequentially arranged from the corner portion 142 side by the first main body protrusion 35a of the short side portion 141 and the second main body protrusion 35b of the short side portion 141. It is referred to as the third main body protrusion 35c of the short side portion 241, and the lid protrusions 45a, 45b, 45c of the lid protrusion row 450 in the short side portion 241 are arranged in order from the corner portion 242 side as the first lid protrusion of the short side portion 241. It is referred to as 45a, the second lid protrusion 45b of the short side portion 241 and the third lid protrusion 45c of the short side portion 241. The first to third main body protrusions 35a, 35b, 35c of the short side portion 141 correspond to the first to third lid protrusions 45a, 45b, 45c of the short side portion 241, respectively. In the closed state, the first to third lid protrusions 45a, 45b, 45c of the short side portion 241 are corner portions with respect to the first to third main body protrusions 35a, 35b, 35c of the short side portion 141, respectively. The positions are shifted to the 142 and 242 sides.

The portion of the short side portion 241 on the side center side of the first lid protrusion 45a overlaps the portion of the short side portion 141 on the corner portion 142 side of the first main body protrusion 35a in the vertical direction. The portion of the short side portion 241 on the corner portion 242 side of the first lid projection 45a does not overlap with the first main body projection 35a of the short side portion 141 in the vertical direction. Similarly, the portions of the short side portions 241 on the side central portion side of the second and third lid projections 45b and 45c are on the corner portions 142 side of the second and third main body projections 35b and 35c of the short side portion 141, respectively. The portions of the short side portions 241 on the second and third lid protrusions 45b and 45c on the corner portion 242 side overlap with the portion of the short side portion 141 in the second and third main body protrusions 35b, respectively. It does not overlap with 35c in the vertical direction. The ends of the second and third lid protrusions 45b and 45c of the short side portions 241 on the corner portion 242 side are vertically aligned with the ends of the first and second main body protrusions 35a and 35b on the side center portion side, respectively. overlap. For example, as shown in FIG. 25B, the horizontal dimension W4 in which the second lid protrusion 45b of the short side portion 241 overlaps the second main body protrusion 35b of the short side portion 141 in the vertical direction is the short side portion 241. The second lid protrusion 45b of the above may be larger than the horizontal dimension W3 that overlaps the first main body protrusion 35a of the short side portion 141 in the vertical direction. That is, W4> W3 may be satisfied. However, W4 = W3 or W4 <W3 may be satisfied. The same applies to the third lid protrusion 45c of the short side portion 241.

As described above, in the container of the present embodiment, the island-shaped lid protrusions 44 and 45 and the island-shaped main body protrusions 34 and 35 partially overlap each other in the vertical direction. The force required to cover the lid 2 on the container body 1 is small. Therefore, the lid closing operation can be easily performed. In the closed state, the island-shaped lid protrusions 44 and 45 are located below the island-shaped main body protrusions 34 and 35 and partially overlap each other in the vertical direction, so that the lid 2 is attached to the container body 1 from the container body 1. When it is about to come off, the island-shaped lid protrusions 44 and 45 are caught by the island-shaped main body protrusions 34 and 35. Therefore, it is prevented that the lid 2 is inadvertently removed. Since the closed state is maintained even if the lid 2 and the container body 1 are not separately fixed with tape, the tape sticking operation can be omitted. Further, since the island-shaped lid protrusions 44 and 45 and the island-shaped main body protrusions 34 and 35 do not overlap in the vertical direction over the entire length in the horizontal direction but only partially overlap, the lid 2 is attached. When opening, the lid 2 can be easily opened. In particular, since the island-shaped lid protrusions 44 and 45 are arranged so as to be displaced from the island-shaped main body protrusions 34 and 35 to the corners 142 and 242 in the closed state, the lid closing work is more complete. It will be easier. Further, since a plurality of island-shaped lid protrusions 44 and 45 and island-shaped main body protrusions 34 and 35 are formed to form lid protrusion rows 440 and 450 and main body protrusion rows 340 and 350, respectively, the lid closing work is easy. In addition to being able to do so, the engagement state between the island-shaped lid protrusions 44 and 45 in the closed state and the island-shaped main body protrusions 34 and 35 becomes more reliable, and the closed state is further maintained. The island-shaped lid protrusions 44 and 45 may be one, and the island-shaped main body protrusions 34 and 35 may also be one.

Further, if the island-shaped main body protrusions 34 and 35 have a shape in which the upper edge 348 is lowered toward the corner portion 142 and the vertical dimension becomes smaller, the lid closing operation becomes smoother. Become. Further, if the island-shaped main body protrusions 34 and 35 have a shape in which the protrusion height becomes lower toward the corner portion 142 side, the lid closing operation becomes smoother.

In the present embodiment, the island-shaped lid projections 44 and 45 are substantially rectangular when viewed from the front, but as shown in FIG. 28, the island-shaped lid projections 44 and 45 view it from the front. When viewed, it may have a track shape or an oval shape. Further, as shown in FIG. 29, the island-shaped main body protrusions 34 and 35 are substantially rectangular when viewed from the front, and the island-shaped lid protrusions 44 and 45 are substantially triangular when viewed from the front. It may be.

In the above embodiment, the container body 1 and the lid 2 are separate bodies, but the container body 1 and the lid 2 are integrally connected via a hinge portion, which is a so-called food pack. It may be a configuration.

1 Container body 10 Bottom surface 11 Main body side surface 13 Main body flange Upper surface 14 Main body hanging 140 Long side 141 Short side 142 Corner 15 Main body edging 150 Main body picking 30 Main body protrusion 31 Long side Striped main body protrusion 34 in the center of the side of the part Island-shaped main body protrusion 34 in the long side Island-shaped first main body protrusion 34b in the long side Island-shaped second main body protrusion 34c in the long side Island-shaped third main body protrusion 34d Long-sided island-shaped fourth main body protrusion 340 Long-sided main body protrusion row 341 Top top surface 342 Lower inclined surface 343 Side inclined surface 344 Upper inclined surface 344a First Upper inclined surface 344b Second upper inclined surface 346 Lower edge 347 Side edge 348 Upper edge 348a First upper edge 348b Second upper edge 35 Short side island-shaped main body Projection 35a Short side island-shaped first main body Protrusion 35b Island-shaped second main body protrusion on the short side 35c Island-shaped third main body protrusion on the short side 350 Main body protrusion row on the short side 2 Lid 20 Top surface 21 Lid side surface 23 Lid flange upper surface 24 Lower part of the lid 240 Long side 241 Short side 242 Corner 25 Lid edging 250 Lid knob 40 Streaky lid protrusion at the corner 41 Streaky lid protrusion at the center of the long side 44 Long side Island-shaped lid protrusion 44a Long-sided island-shaped first lid protrusion 44b Long-sided island-shaped second lid protrusion 44c Long-sided island-shaped third lid protrusion 44d Long-sided island Fourth lid protrusion 440 Long side lid protrusion row 441 Top top surface 442 Lower slope surface 443 Side slope surface 444 Upper slope surface 45 Short side island-shaped lid protrusion 45a Short side island-shaped first One lid protrusion 45b Short side island-shaped second lid protrusion 45c Short side island-shaped third lid protrusion 450 Short side lid protrusion row

Claims (5)

A substantially rectangular container body having an opening opened on the upper side, and a lid that covers the container body and closes the opening of the container body.
The container body has a body hanging on the outside of the opening, and the lid has a lid hanging on the outside of the body hanging in the closed state.
A main body protrusion is formed in the vicinity of the corner portion of the lower part of the main body to project outward and maintain the closed state, and in the vicinity of the corner portion of the lower part of the lid, the main body protrusion protrudes inward to close the lid. A lid protrusion is formed to maintain the condition,
In the closed state, the lid protrusion is located below the main body protrusion, and the main body protrusion and the lid protrusion are arranged so as to be horizontally offset from each other, so that only a part thereof is not the total length in the horizontal direction. A packaging container in which the lids overlap each other in the vertical direction. The packaging container according to claim 1, wherein the lid protrusions are arranged so as to be displaced toward the corners with respect to the main body protrusions in the closed state. In the vicinity of both side ends of each side of the hanging portion of the main body, a plurality of main body protrusions are arranged side by side at intervals in the horizontal direction to form a main body protrusion row.
In the vicinity of both side ends of each side of the lower part of the lid, a plurality of lid protrusions are arranged side by side at intervals in the horizontal direction to form a lid protrusion row.
In the closed state, the lid protrusion row is arranged so as to be offset to the corner side with respect to the main body protrusion row, and the lid protrusion overlaps with the main body protrusion corresponding to the lid protrusion at the end on the side center side. The packaging container according to claim 1, wherein the lid protrusion overlaps the main body protrusion located next to the corner portion side with respect to the main body protrusion corresponding to the lid protrusion at the end portion on the corner portion side. The packaging container according to claim 1, wherein the main body protrusion has a shape in which the upper edge is lowered toward the corner portion and the vertical dimension is reduced. The packaging container according to claim 1, wherein the main body protrusion has a shape in which the protrusion height decreases toward the corner portion side.

Images