JP2023136478A - Packaging container - Google Patents

Abstract

To acquire a packaging container which firmly holds fitting between a lid body and a container body when closing a lid, and which can be quickly and easily opened when opening the lid.SOLUTION: A packaging container includes a container body 1 and a lid body 2 which includes an annular fitting part 23 that can be attached to/detached from the container body 1. The annular fitting part 23 of the lid body 2 comprises: a pair of engagement regions 23a where a plurality of locking protrusion parts 24 are disposed intermittently at opposing positions in the circumferential direction of an inner peripheral surface; and a pair of non-engagement regions 23b where the regions without the locking protrusion parts 24 exist in the opposing positions. Locking protrusion parts 24l adjacent to the pair of non-engagement regions 23b of the locking protrusion parts 24 are lower than other locking protrusion parts 24h, and when closing the lid, the locking protrusion parts 24 are locked to a receiving part 14 of the container body 1, the pair of engagement regions 23a are engaged with the container body 1, the annular fitting part 23 is fitted by forming a gap S between the pair of non-engagement regions 23b and the receiving part 14. When opening the lid, the pair of non-engagement regions 23b are pressed inward, the annular fitting part 23 is elastically deformed, locking between the locking protrusion parts 24 and the receiving part 14 is alleviated, and the fitting of the annular fitting part 23 and the container body 1 is released.SELECTED DRAWING: Figure 1

Description

The present invention relates to packaging containers used for packaging foods such as ice cream, soft serve ice cream, various sweets such as cakes and Japanese sweets, and other foods.

Various sweets such as soft serve ice cream and cakes sold at convenience stores are usually packaged in packaging containers consisting of a cup-shaped container body and a lid that removably fits into the container body. It is generally sold as As such a packaging container, for example, as in the packaging container shown in FIG. It has been known in the past that the lid body 2 can be removably fitted to the container body 1 by removably locking it to the receiving portion 14 of the cup-shaped container body 1.

According to this packaging container, when packaging various sweets such as soft serve ice cream, the lid 2 is placed over the container body 1 with the sweets stored in the container body 1, and the annular fitting portion 23 of the lid 2 is By locking the locking convex portion 24 provided on the inner circumferential surface to the receiving portion 14 of the container body 1, the lid body 2 can be fitted into the container body 1 and closed. On the other hand, when opening the lid, the lid 2 fitted to the container body 1 is pushed up from the container body 1 to release the lock between the locking convex portion 24 and the receiving portion 14, and the lid 2 is removed from the container. It can be removed from the main body 1.

However, in this packaging container, since the locking convex portion 24 of the lid 2 and the receiving portion 14 of the container body 1 are locked over the entire circumference, the lid 2 and the container body 1 are locked together. The fitted state is relatively strong. Therefore, when removing the lid 2 from the container body 1, it is necessary to push up the lid 2 with strong force, resulting in a problem that it is difficult to open the lid. Also, if you push up the lid 2 with strong force when removing it from the container body 1, the lid 2 will come off all at once, and the wrapped sweets may fall out of the container body 1 due to the force, or the lid 2 that came off may You need to be careful when opening the lid, as it may come into contact with the sweets.

In this regard, in Japanese Patent Application Laid-Open No. 2004-59055, a pair of locking protrusions (locking pieces) provided on the inner wall surface of the lid body are locked to a receiving part (annular protrusion strip) of the container body. A package that fits into the container body, and when the lid is opened, the lid body is pressed and elastically deformed, thereby releasing the locking state of the locking convex part to the receiving part, and allowing the lid body to be removed from the container body. containers have been proposed.

According to this packaging container, when the peripheral wall of the lid on the side where the locking protrusion is not provided is pressed inward to elastically deform the lid, the side of the lid on which the locking protrusion is provided is pressed inward. The peripheral wall deforms so as to bulge outward, and the locking convex part on the wall of the lid body and the receiving part of the container body are released. In this state, pull the lid upward to compare. The lid can be easily removed from the container body.

However, in this packaging container, since the locking protrusion is only partially provided on the inner circumferential surface of the lid, the fit between the lid and the container body is weak, resulting in unintentional errors. Otherwise, the lid may come off from the container body.

Japanese Patent Application Publication No. 2004-59055

An object of the present invention is to provide a packaging container that can be opened quickly and easily while maintaining a strong fit between the lid and the container body when the lid is closed. .

The present invention provides a packaging container having a container body and a lid having an annular fitting part that is removably fitted into the container body, wherein the annular fitting part of the lid has an inner part. A pair of engagement regions in which regions in which a plurality of locking projections are intermittently formed in the circumferential direction of the circumferential surface are arranged at opposing positions, and a region in which the locking projections are not formed is in opposing positions. and a pair of non-engaging regions arranged in the pair, and among the plurality of locking projections formed in the pair of engaging regions, the locking projections adjacent to the pair of non-engaging regions are other than the locking projections adjacent to the pair of non-engaging regions. The height of the locking protrusion is lower than that of the locking protrusion, and when the lid is closed, the locking protrusion engages with the receiving part of the container body, so that the pair of engagement regions are engaged with the container body. At the same time, the annular fitting part is fitted into the container main body with a gap formed between the pair of non-engaging areas and the receiving part, and when the lid is opened, the annular fitting part is fitted into the container body, and when the lid is opened, the pair of non-engaging areas are inserted into the container body. By pressing in the opposite direction to elastically deform the annular fitting portion, the locking between the locking convex portion and the receiving portion is relaxed, and the fitting between the annular fitting portion and the container body is released. It is configured as a packaging container.

The heights of the plurality of locking convex portions are such that when the lid is closed, the container is locked to the receiving portion of the container body, and when the lid is opened, the annular fitting portion is elastically deformed. The height of the locking protrusion adjacent to the non-engaging area is set to be lower than the other locking protrusions. It is good if it is.

A second aspect of the invention is characterized in that the annular fitting portion has an inner diameter larger in the direction of the pair of non-engaging regions than in the direction of the pair of engaging regions.

The invention according to claim 3 is characterized in that a finger rest portion is provided on the outer peripheral side of the pair of non-engaging regions. The finger rest part may be provided with a shape that is not convex in the outer circumferential direction in order to make it easier to put a finger on the non-engaging area when pressing inward. A portion of the outer periphery of the region may be formed into a linear shape or a concave arc shape in plan view, or a portion may be additionally provided with a flat surface or a concave curved surface on the outer periphery side of the non-engaging region. It is possible to do so.

According to this invention, since a plurality of locking convex portions are provided in the circumferential direction on the inner circumferential surfaces of the pair of engagement regions facing each other in the annular fitting portion of the lid, when the lid is closed, A plurality of locking protrusions are locked to the receiving portion of the container main body, and the fitted state between the annular fitting portion and the container main body can be made strong. Furthermore, when the lid is closed, the annular fitting part is fitted to the container body with a gap formed between the pair of non-engaging regions and the receiving part, so that the annular fitting part and the container main body are connected to each other. In the fitted state, a space can be secured when pressing the pair of non-engaging regions of the annular fitting part from outside to inside. Then, when the pair of non-engaging areas of the annular fitting part is pressed inward from the outside, the pair of engaging areas side is elastically deformed so as to bulge outward, so that the locking convex part and the receiving part are The locking is relaxed, and the fitting between the annular fitting part and the container body can be released and the lid can be opened.

Furthermore, among the plurality of locking projections provided on the inner circumferential surface of the pair of engagement regions, the height of the locking projection adjacent to the non-engaging region is set lower than the height of the other locking projections. Therefore, when the annular fitting part is elastically deformed by pressing the pair of non-engaging regions from the outside to the inside, the locking protrusion adjacent to the non-engaging region will close to the container body. The lid can be removed from the container body smoothly without getting caught in the receiving part. That is, when a pair of non-engaging regions is pressed inward from the outside, the pair of engaging regions elastically deforms so as to expand outward, while the pair of non-engaging regions shrinks inward. Where elastic deformation occurs, the degree of outward bulge of the engaging area on the non-engaging area side (the position where the locking protrusion adjacent to the non-engaging area is provided) is different from that of other engaging areas (other areas). Since the bulge is not as large as the bulge at the position where the locking protrusion is provided, if the height of the locking protrusion adjacent to the non-engaging area is the same as the other locking protrusions, the disengagement will occur. This makes it difficult to release the lock between the locking convex portion and the receiving portion adjacent to the area. In this regard, in the present invention, since the height of the locking protrusion adjacent to the non-engaging area is lower than the height of the other locking protrusions, the degree of outward bulge during elastic deformation is reduced. Even if the locking protrusion is provided on the non-engaging area side of the small engagement area (even if the locking protrusion is provided adjacent to the non-engaging area), the locking with the receiving part is relaxed. It can be canceled by doing so. As a result, the range of the engagement area can be made as large as possible, and the fitted state between the lid and the container body when the lid is closed can be made strong.

According to the invention of claim 2, the inner diameter of the annular fitting portion is larger in the direction of the pair of non-engaging regions than the inner diameter in the direction of the pair of engaging regions. The range of the engagement area can be made as large as possible, and the fitted state between the lid and the container body when the lid is closed can be made stronger. In other words, if the inner diameter in the direction of the pair of non-engaging regions is made larger than the inner diameter in the direction of the pair of engaging regions, the shape of the annular fitting portion becomes longer in the direction of the pair of non-engaging regions than in the direction of the pair of engaging regions. Because of the shape, the range of the pair of engagement regions that can be engaged with the container body can be increased more than when the inner diameter in the direction of the pair of engagement regions and the inner diameter in the direction of the pair of non-engagement regions are the same diameter. can be made larger. In addition, when the outer edge shape of the receiving part of the container body is a perfect circle in plan view, the inner diameter in the direction of the pair of engagement areas and the outer diameter of the receiving part of the container body are the same size, while the pair of non-engaging A gap can be formed between the inner circumferential surface of the mating region and the receiving portion of the container body.

According to the third aspect of the invention, since the finger rests are provided on the outer periphery of the pair of non-engaging regions, it is easy to grasp the position of the non-engaging regions of the annular fitting portion to be pressed when opening the lid. , it is easy to press the non-engaged area by placing your finger on it.

A front view and a side view showing the outline of the packaging container of the present invention Similarly, A end view and B end view in Figure 1. Similarly, bottom view of lid body 2 Front view and side view with the lid closed as well. Similarly, C end view and D end view in Fig. 4. Similarly, a diagram illustrating the relative positional relationship between the annular fitting part 23 of the lid body 2 and the receiving part 14 of the container body 1 when the lid is closed and when the lid is opened. An enlarged view of one engagement region 23a portion in FIG. 6 as well. Schematic diagram showing an example of a conventional packaging container

1 to 5 are diagrams showing an outline of an embodiment of a packaging container of the present invention.

The packaging container of the present invention consists of a container body 1 made of synthetic resin and a lid 2 made of synthetic resin that can be fitted into and removed from the container body 1.

The container body 1 is a substantially cylindrical cup-shaped container with an open top surface, and a flange portion 12 extends outward from the periphery of the opening portion 11, and a flange portion 12 extends from the outer edge of the flange portion 12 via an inclined portion 13. A receiving portion 14 is formed. The outer edges of the opening portion 11, the flange portion 12, and the receiving portion 14 are all formed into a perfect circular shape in a plan view.

The lid body 2 is formed into a substantially truncated conical shape with an open bottom, and a first flange portion 22 extends outward from the periphery of the opening 21, and extends downward from the outer edge of the first flange portion 22. An annular fitting portion 23 is formed toward the end. Further, a second flange portion 25 is provided outward from the lower end of the annular fitting portion 23, and a rising portion 26 is further provided obliquely upward from the outer edge of the second flange portion 25.

FIG. 3 is a bottom view of the lid body 2. The annular fitting part 23 has a pair of engaging areas 23a that are areas that are engaged with the receiving part 14 of the container body 1 when the lid is closed, and a pair of non-engaging areas 23b that are areas that are not engaged with the receiving part 14. are arranged at opposing positions, respectively. Five locking protrusions 24 are formed intermittently in the circumferential direction on the inner peripheral surface of each engagement region 23a, while nothing is formed on the inner peripheral surface of each non-engaging region 23b. . Here, the height of the locking protrusion 24 is such that when the lid is closed, it is locked to the receiving part 14 of the container body 1, and when the lid is opened, when the annular fitting part 23 is elastically deformed. The height is set to such an extent that the locking state with the receiving part 14 can be relaxed and released, and in particular, the two locking protrusions 24l disposed on the side adjacent to the non-engaging area 23b are The height is lower than that of the three locking protrusions 24h.

Further, the inner diameter of the annular fitting portion 23 is set to be the same as the outer diameter of the receiving portion 14, but the inner diameter _L2 in the direction of the pair of non-engaging regions _23b is the same as the outer diameter of the receiving portion 14. , has a slightly larger diameter than the outer diameter of the receiving portion 14, and has a larger diameter than the inner diameter _L1 in the direction of the pair of engagement regions 23a. By configuring the inner diameter of the annular fitting part 23 in this way, a gap S is formed between the non-engaging area 23b of the annular fitting part 23 and the receiving part 14 of the container body 1 when the lid is closed. It has become.

The shape of the outer edge of the second flange 25 and the rising portion 26 extending outward from the outer edge of the annular fitting portion 23 when viewed from the bottom is approximately one size larger than the outer edge shape of the annular fitting portion 23. However, by forming only the outer edge portions on the outside of the pair of non-engaging regions 23b into a linear shape, the finger rest portions 27 are provided on the rising portions 26 on the outside of the pair of non-engaging regions 23b. ing.

4 and 5 are diagrams schematically showing a state in which the lid body 2 is fitted to the container body 1 (lid closed state).

When fitting the lid 2 to the container body 1, when the lid 2 is placed over the container body 1 so as to cover the entire opening 11 of the container body 1 and pushed down, the pair of annular fitting portions 23 are engaged. The locking convex portion 24 formed on the inner circumferential surface of the fitting region 23a climbs over the receiving portion 14 of the container body 1 and reaches below, thereby being locked to the receiving portion 14, and the annular fitting portion 23 and the container body 1 are locked. The lid can be closed while being engaged in the pair of engagement areas 23a. At this time, there is no gap between the receiving part 14 of the container body 1 and the inner circumferential surface of the engaging area 23a, and the receiving part 14 and the inner circumferential surface of the engaging area 23a are in contact with each other. Therefore, there is no possibility that the container body 1 will shift in the direction of the pair of engagement areas 23a of the lid 2 (FIG. 5(a)). In addition, since all the locking convex portions 24 are locked to the receiving portion 14, the pair of engagement regions 23a are engaged with the container body 1, so that the fitting between the container body 1 and the annular fitting portion 23 is prevented. The situation can be strengthened. On the other hand, since a gap S is formed between the receiving portion 14 and the inner circumferential surface of the non-engaging region 23b (FIG. 5(b)), when the lid is opened, the pair of non-engaging regions 23b can be opened from the outside. The annular fitting portion 23 can be elastically deformed by pressing inward. Further, since the lid is closed with the flange portion 12 of the container body 1 and the first flange portion 22 of the lid body 2 in contact with each other over the entire circumference, it is possible to prevent foreign matter from entering from the outside.

6 and 7 are diagrams illustrating the relative positional relationship between the annular fitting portion 23 of the lid body 2 and the receiving portion 14 of the container body 1 when the lid is closed and when the lid is opened.

When the lid is closed, since the inner diameter _L1 of the annular fitting portion 23 in the direction of the pair of engagement regions 23a and the outer diameter of the receiving portion 14 of the container body 1 are the same size, the engagement region 23a The locking protrusions 24 formed to protrude from the inner circumferential surface of the container body 1 are all locked to the receiving portion 14 of the container body 1, and each engagement region 23a and the container body 1 are firmly engaged. (See FIGS. 6(a) and 7(a)). On the other hand, since the inner diameter _L2 in the direction of the pair of non-engaging regions 23b is larger than the outer diameter of the receiving portion 14 of the container body 1, the inner circumferential surface of each non-engaging region 23b and the receiving portion of the container main body 1 A gap S is formed between each part 14.

When the lid is opened, a gap S is formed between the inner circumferential surface of the pair of non-engaging regions 23b and the receiving portion 14 of the container body 1. It can be pressed inward from both sides. When the finger rests 27 formed on the outside of each non-engaging region 23b are pressed inward from the outside as shown by the thick arrows, the entire lid body 2 including the annular fitting part 23 is elastically deformed, and As shown in the figure, the pair of engagement regions 23a bulge outward, but the degree of outward bulge in each engagement region 23a is smaller on the non-engagement region 23b side than on the other portions. Here, the locking convex portion 24 formed on the inner peripheral surface of each engaging region 23a has a height of the locking convex portion 24l adjacent to the non-engaging region 23b that is higher than the height of the other locking convex portion 24h. Since it is formed low, when the lid body 2 is elastically deformed by pressing the pair of non-engaging regions 23b, the locking convex portions 24l are formed in the respective engaging regions 23a in the outward direction. Even if the degree of bulge is smaller than other parts, it is possible to loosen and release the lock between all the locking protrusions 24 including the locking protrusion 24l and the receiving part 14 of the container body 1 ( (See FIGS. 6(b) and 7(b)). Thereby, the lid 2 can be removed from the container body 1.

The present invention relates to a packaging container used for packaging foods such as various sweets and other foods, and has industrial applicability.

1 Container main body 11 Opening part 12 Flange part 14 Receiving part 2 Lid body 21 Opening part 22 First flange part 23 Annular fitting part 23a Engaging area 23b Non-engaging area 24, 24h, 24l Locking convex part 25 Second flange Part 26 Standing part 27 Finger rest part L ₁ Inner diameter L in the direction of the pair of engagement areas ₂ Inner diameter of the pair of non-engagement areas

Claims (3)

A packaging container comprising a container body and a lid having an annular fitting part that is removably fitted to the container body,
The annular fitting portion of the lid includes a pair of engaging regions in which regions in which a plurality of locking protrusions are intermittently formed in the circumferential direction of the inner circumferential surface are disposed at opposing positions, and the locking portion. It consists of a pair of non-engaging regions in which regions in which no convex portions are formed are arranged at opposing positions,
Among the plurality of locking convex portions formed in the pair of engaging regions, a locking convex portion adjacent to the pair of non-engaging regions is formed lower in height than the other locking convex portions,
When the lid is closed, the locking convex portion locks with the receiving portion of the container main body, so that the pair of engaging regions are engaged with the container main body, and the pair of non-engaging regions and the receiving portion are engaged with each other. The annular fitting part is fitted to the container body with a gap formed therebetween,
When the lid is opened, the pair of non-engaging regions are pressed inward to elastically deform the annular fitting part, thereby relaxing the engagement between the locking convex part and the receiving part, and causing the annular fitting to occur. The fitting between the part and the container body is released;
Packaging containers. The inner diameter of the annular fitting portion of the lid body is formed such that the inner diameter in the direction of the pair of non-engaging regions is larger than the inner diameter in the direction of the pair of engaging regions.
The packaging container according to claim 1. A finger rest is provided on the outer periphery of the pair of non-engaging areas.
The packaging container according to claim 1 or 2.