TW201811628A - Packaging container - Google Patents

Abstract

There is provided a packaging container that the lid can be opened with a push. A packaging container comprising a container body that it comprises an opening section at an upper edge and at least an upper end section is capable of elastic deformation, and a lid section for covering the opening section, wherein the lid section comprises a top plate, an outer cylindrical wall extending downward in a vertical direction from an outer periphery of the top plate, and an inner cylindrical wall extending downward in a vertical direction from an inner surface of the top plate, being slightly more internally disposed than the outer cylindrical wall, and following a shape of an inner surface wall of the upper end section of the opening section; a locking section is disposed outside a vicinity of the opening section; a first locked section locked by the locking section is disposed on an inner peripheral surface of the outer cylindrical wall; and the upper end section of the container body is deformed by applying external force to the container, and the deformation propagates from at least the first locked section to the whole lid section to distort the lid section, whereby the first locked section is released and the inner cylindrical wall is pushed up by an inside of the opening section, whereby the opening section is opened.

Description

 Packaging container  

The present invention relates to a packaging container that can open a lid in a one-touch manner.

In recent years, there have been commodities in which a fruit such as chewing gum, chocolate, and sucrose is contained in a recloseable bottle-shaped packaging container. An example of such a recloseable packaging container is described in Patent Document 1. Further, it is not limited to the packaging container for fruits, and it is expected that a packaging container in which the lid is opened in a one-touch manner is expected to have a wide range of needs due to its ease of operation. Examples of such a one-touch opening container are described in Patent Documents 2 and 3.

 [Previous Technical Literature]    [Patent Literature]  

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2010-76819

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2007-261670

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2004-276960

The container described in Patent Document 1 is provided with a discharge port for separating contents such as chewing gum and a take-out port for waste paper on one cover. Therefore, the area of the pouring outlet of the contents is narrower than the cover area, and as a result, there is a disadvantage that it is difficult to take out the contents. Further, in the container, the gripping portion for the switch is provided at the pouring outlet of the contents, and it is difficult to open and close the lid by using the gripping portion with the same hand while grasping the container with one hand.

On the other hand, the containers described in Patent Documents 2 and 3 are intended to be used as a switch for covering with one hand. However, in these containers, a spring means is provided in the hinge portion for smooth switching (Patent Document 2), or a hinge portion is configured to urge the lid body upward (Patent Document 3). Thus, in such containers, the hinge portion needs to be specially constructed, and thus the manufacturing steps are complicated.

Accordingly, it is an object of the present invention to provide a packaging container which can be opened in a one-touch manner without a special configuration of the hinge portion.

According to a first aspect of the invention, a packaging container includes a container body having an opening at an upper edge and at least an upper end portion elastically deformable, and a lid portion closing the opening, wherein the lid portion includes: a top plate; an outer cylindrical drooping wall that hangs from the outer periphery of the top plate; and an inner cylindrical drooping wall that hangs down from the inner surface of the top plate and is located further inside the outer cylindrical drooping wall, and along the opening a shape of an inner surface of the upper end portion; a locking portion is provided on an outer side of the opening portion; and a first locked portion that is locked by the locking portion is provided on an inner circumferential surface of the outer cylindrical hanging wall The upper end portion of the container body is deformed by applying an external force to the container body, and the deformation propagates from at least the first engaged portion to the entire cover portion to deform the cover portion, thereby releasing the pair of locking portions The first locked portion is locked, and the inner cylindrical hanging wall is pushed up by the inner side of the opening, thereby opening the opening.

The invention is the packaging container according to the first aspect, wherein the first engaged portion is provided on one of inner circumferential surfaces of the outer cylindrical hanging wall, and the upper end portion of the container body is along the first portion An external force is applied in a direction in which the distance between the vicinity of the locking portion and the opposite side is shortened, and the upper end portion of the container body is deformed, and the deformation propagates from the first engaged portion and the opposite side portion to the entire cover portion. The cover is deformed.

The packaging container according to the first aspect or the second aspect, wherein the lid portion is slidably coupled to the container body via a hinge portion so as to close the opening portion.

The invention of claim 4, wherein the hinge portion is provided in the vicinity of the opening, and one of the outer cylindrical hanging walls is coupled to the hinge portion, and the first engaged portion is located at least The connection position between the outer cylindrical hanging wall and the hinge portion is opposite to the center of the top plate from the inner circumferential surface of the outer cylindrical hanging wall, and the first portion is adjacent to the hinge portion of the container body. An external force is applied in a direction in which the distance in the vicinity of the locking portion is shortened to deform the upper end portion of the container body, and the deformation propagates from the hinge portion and the first engaged portion to the entire cover portion to deform the cover portion. The unlocking of the first engaged portion by the locking portion is released, and the inner cylindrical hanging wall in the vicinity of the hinge portion is pushed up by the inner side of the opening portion, thereby opening the opening portion.

The packaging container according to any one of the items 1 to 4, wherein the container body is provided with a container body member having an upper edge opening and at least an upper end portion being elastically deformable, and being fixed to the container body An annular port member elastically deformable at an upper edge of the member, wherein the cover portion includes a fitting ring portion that is elastically deformed by being fitted to the annular port member, and a cap body for opening and closing the opening, the cover The main body includes the top plate, the outer cylindrical hanging wall, and the inner cylindrical hanging wall.

The packaging container according to any one of the items 1 to 5, wherein the first to-be-locked portion is present in the outer cylindrical shape in an angular range of 3° or more and 120° or less in the circumferential direction. The inner circumference of the wall.

The packaging container according to any one of the preceding claims, wherein the locking portion is provided on the outer circumference of the vicinity of the opening.

The packaging container according to any one of the items 1 to 7, wherein the cover portion is elastically deformable.

The packaging container according to any one of the items 1 to 8, wherein the cover portion has a substantially circular shape or a substantially elliptical shape.

The packaging container according to any one of the preceding claims, wherein, when the container body and the lid portion have a substantially circular shape in plan view, when the locking is released, The deformation rate p obtained by the following formula (1) is 7.0% or more and 8.5% or less, and the formula (1) p = {(Rr) / R} × 100

(In the above formula (1), p represents a deformation ratio (%), R represents a maximum diameter (mm) of the container body before the deformation, and r represents a short diameter (mm) of the container body at the time of the deformation.

The packaging container according to any one of the items 1 to 10, wherein the container body has an average wall thickness of 0.10 mm or more and 10 mm or less.

The packaging container according to any one of the items 1 to 11, wherein the upper end portion of the container body has an average wall thickness of 0.10 mm or more and 10 mm or less.

The invention of claim 13 wherein the container body comprises polyethylene, polypropylene, polyethylene terephthalate, polyamine, polycarbonate. At least one material selected from the group consisting of esters and polyvinyl chloride.

The packaging container according to any one of the items 4 to 13, wherein the outer cylindrical tubular hanging wall and the joint portion with the hinge portion and the first engaged portion are present The second to-be-locked portion is provided at at least one of the positions, and the second to-be-locked portion protrudes toward the center of the top plate from the inner circumferential surface of the outer cylindrical hanging wall, and is locked by the locking portion. The packaging container according to the fourteenth aspect, wherein the second to-be-locked portion is present on the inner circumferential surface of the outer cylindrical hanging wall in an angular range of 3° or more and 20° or less in the circumferential direction.

The packaging container according to any one of the fourth aspect, wherein the third locked portion is provided in the vicinity of a connection position between the outer cylindrical hanging wall and the hinge portion. The to-be-locked portion protrudes toward the center of the top plate from the inner circumferential surface of the outer cylindrical hanging wall, and is locked by the locking portion. The packaging container according to the sixteenth aspect, wherein the third to-be-locked portion is present on the inner circumferential surface of the outer cylindrical hollow wall in an angular range of 3° or more and 120° or less in the circumferential direction.

According to the present invention, by applying an external force to the container body, the lid portion is deformed in accordance with the deformation of the upper end portion of the container body, and as a result, the locking can be released and the lid portion can be pushed up, and the lid can be opened in a one-touch manner.

1‧‧‧ container body

1a‧‧‧Container body member

1b‧‧‧Ring port components

1c‧‧‧ card stop

1d‧‧‧ inside of the opening

2‧‧‧ Cover

3‧‧‧ openings

4‧‧‧Mixed ring

5‧‧‧ Cover body

6‧‧‧Scratch

7‧‧‧Tear tape

8‧‧‧Instruction Department

9‧‧‧Switch gripper

10‧‧‧ Hinge section

10a‧‧‧ Connection position of the outer cylindrical hanging wall 22 and the hinge portion 10

21‧‧‧ top board

22‧‧‧Outer cylindrical drooping wall

23‧‧‧Inside cylindrical wall

23a‧‧‧Inside cylindrical sag wall near the hinge part 10

24‧‧‧1st carded part

25‧‧‧2nd carded part

26‧‧‧3rd carded part

27‧‧‧The first locked part of the reference example

30‧‧‧ body part of the container body

100‧‧‧First embodiment of packaging container

A‧‧‧ indicates a point chain at the location of the cut surface

θ ₁ ‧‧‧ angle

θ ₂ ‧‧‧ angle

Fig. 1 is a perspective view showing a first embodiment of the packaging container of the present invention.

Fig. 2 is an exploded perspective view showing the case where the container body 1 and the lid portion 2 include different members in the first embodiment.

Fig. 3 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the first embodiment.

Fig. 4 is a right side sectional view showing the first embodiment.

Fig. 5A is a right side cross-sectional view showing the first embodiment before releasing the locking of the cover.

Fig. 5B is a right side view of the model of the first embodiment immediately before the locking of the lid is released by one hand.

Fig. 5C is a front view photograph of the model of the first embodiment immediately before the locking of the lid is released by one hand.

Fig. 6 is a right side cross-sectional view showing the first embodiment in which the sealing of the packaging container has just been broken.

Fig. 7 is a right side cross-sectional view showing the first embodiment before the sealing is broken and the cover is fully opened.

Fig. 8 is a right side sectional view showing the first embodiment after the cover is fully opened.

Fig. 9 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the second embodiment.

Fig. 10 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the third embodiment.

Fig. 11 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the fourth embodiment.

Fig. 12 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the fifth embodiment.

Fig. 13 is a perspective view showing a sixth embodiment of the packaging container of the present invention.

Fig. 14 is a right side sectional view and a bottom sectional view, respectively, of a reference example of a lid portion.

The packaging container according to the present invention includes a container body having an opening at an upper edge and at least an upper end portion elastically deformable, and a lid portion closing the opening, wherein the lid portion includes a top plate and an outer cylindrical shape sag a wall that hangs from the outer periphery of the top plate; and an inner cylindrical sag wall that hangs down from the inner surface of the top plate and is located further inside the outer cylindrical sag wall and along the inner wall of the upper end of the opening a locking portion is provided on the outer side of the opening portion, and a first locked portion that is locked by the locking portion is provided on an inner circumferential surface of the outer cylindrical hanging wall, and an external force is applied to the container body. The upper end portion of the container body is deformed, and the deformation propagates from at least the first engaged portion to the entire cover portion to deform the cover portion, thereby releasing the locking portion to the first engaged portion. When the inner side cylindrical hanging wall is pushed up by the inner side of the opening, the opening is opened.

The term "packaging container" as used in the present invention means a container for packaging, and the state before the object is packaged is also included in the present invention.

Hereinafter, the packaging container of the present invention will be described with reference to the drawings. Furthermore, the person shown here is an example of the packaging container of the present invention, and the present invention is not limited thereto. Fig. 1 is a perspective view showing a first embodiment of the packaging container of the present invention. The first embodiment 100 of the packaging container includes a container body 1 and a lid portion 2 located at an upper portion of the container body 1. The container body 1 and the lid portion 2 may be integrally molded with each other, or the container body 1 and the lid portion 2 may be formed into different members and assembled at the manufacturing stage.

In the present embodiment, the container body 1 has a circular shape in a plan view and has a cylindrical shape having a bottom and an opening at the upper edge. The container body 1 may be an integrally molded product or may be composed of two or more members. For example, the container body 1 may include a container body member having an open upper edge and an annular port member fixed to the upper edge of the container body member. Fig. 2 is an exploded perspective view showing the case where the container body 1 and the lid portion 2 include different members in the first embodiment. As shown in Fig. 2, the container body 1 includes a container body member 1a and an annular port member 1b, and the annular port member 1b is provided with a locking portion 1c on the outer side of the opening portion. Since the annular port member 1b is fitted to the inside of the lid portion 2, it is hidden inside the lid portion 2 in a state after assembly.

In the present embodiment, the lid portion 2 has a circular shape in a plan view, and is coupled to the container body 1 via a hinge portion so as to close the opening portion 3. A hinge portion (not shown) is provided in the vicinity of the opening portion 3. The lid portion 2 is slidably coupled to the container body 1. However, in the present invention, as described below, the container body and the lid portion can be separated in the open state of the lid. Further, even if the container body is coupled to the lid portion, the connecting means is not necessarily limited to the hinge. The lid portion 2 may be an integrally molded product or may be composed of two or more members. For example, the lid portion 2 may include a fitting ring portion 4 that is externally fitted to the annular port member, and a cap body 5 that is used to open and close the opening portion 3. In the present embodiment, the cover body 5 is provided to be swingable about the hinge portion. The fitting ring portion 4 and the cap body 5 may be integrally formed with each other, or may be formed separately from different parts. In the present specification, the "opening of the lid" is a case where the lid portion only has a structure for closing the opening of the container body, and the opening portion is opened by the lid portion itself being separated from the opening portion of the container body. . On the other hand, in the case where the lid portion has a structure (for example, the fitting ring portion or the like) other than the structure for closing the opening of the container body (for example, the lid body or the like), the cover is referred to in the present specification. "Opening" means opening the opening by leaving the opening of the container body by the cover body or the like.

As described below, one of the main features of the container of the present invention is that the cover is opened by applying an external force, and therefore it is preferable to be elastically deformable at least at a portion to which an external force is applied. The term "elastic deformation" as used in the present invention refers to a deformation that immediately disappears when an object deformed by a force below the elastic limit is removed. Here, the term "elastic limit" refers to a case where an external force is applied to a solid to deform it, and if the stress is larger than a certain limit, the ultimate stress of the original shape cannot be restored.

The opening of the lid requires deformation of the upper end portion of the container body, so that at least the upper end portion of the container body is required to be elastically deformable. Further, when the container body is configured to include the container body member and the annular port member, at least the upper end portion of the container body member and the annular port member are required to be elastically deformable. Further, when the lid portion is configured to include the fitting ring portion and the lid body, the fitting ring portion fitted to the annular port member must be elastically deformable together with the annular port member. Further, since the force applied to the annular port member or the container body is transmitted to the cap body through the hinge portion to deform the cap body, it is preferable that the cap body or the hinge portion is also elastically deformable. In the present invention, it is preferred that both the container body and the lid portion are elastically deformable.

In order to shape at least the upper end portion of the container body to be elastically deformable, it is preferred to define the average wall thickness and material of the container body as follows. The average wall thickness of the container body is preferably 0.10 mm or more and 10 mm or less. If the average wall thickness is less than 0.10 mm, the strength of the container body is weakened, and the original shape of the packaging container cannot be maintained. Further, in the case where the average wall thickness exceeds 10 mm, the container body is hard to be deformed, and as a result, it is difficult to open the lid by the following method. The average wall thickness of the container body is preferably 0.50 mm or more and 5.0 mm or less, and more preferably 0.75 mm or more and 2.5 mm or less. In order to be elastically deformable, at least the upper end portion of the container body may be thinner than the above average wall thickness. For the same reason, the average thickness of the lid portion is preferably 0.10 mm or more and 10 mm or less, more preferably 0.50 mm or more and 5.0 mm or less, and further preferably 0.75 mm or more and 2.5 mm or less. Furthermore, the average wall thickness of the lid portion may be substantially equal to or different from the average wall thickness of the container body.

The average thickness of the upper end portion of the container body is preferably 0.10 mm or more and 10 mm or less. If the average wall thickness is less than 0.10 mm, the strength of the opening of the container body is particularly weakened. Further, when the average wall thickness exceeds 10 mm, the container body is hardly deformed, and as a result, it is difficult to open the lid by the following method. The average thickness of the upper end portion of the container body is preferably 0.50 mm or more and 5.0 mm or less, and more preferably 0.75 mm or more and 2.5 mm or less.

The method of measuring the average wall thickness of the container body is as follows. First, the thickness of the wall of any part of the container body is measured by a device such as a vernier caliper. Similarly, 10 to 20 portions of the container body were measured, and the average value was set to an average wall thickness. The method of measuring the average wall thickness of the lid portion is also the same as described above.

The method of measuring the average wall thickness at the upper end of the container body is as follows. First, the thickness of the wall of the upper end portion of the container body is measured by a device such as a vernier caliper (the thickness of the wall of the annular port member when the container body is provided with the container body member and the annular port member). Similarly, 10 to 20 portions of the upper end portion of the container body were measured, and the average value thereof was defined as the average wall thickness at the upper end portion of the container body.

The material constituting the container body is not particularly limited as long as the container body is elastically deformable. Examples of the material constituting the container body include an elastically deformable resin and a layer containing the resin on both surfaces of a substrate such as paper or aluminum or a single-layer layer. The container body preferably comprises polyethylene (PE), polypropylene (PP), polyethylene terephthalate, polyamide, polycarbonate, or polyvinyl chloride. The reason for this is that the materials are easy to form, inexpensive, and have the strength and flexibility required for the packaging container. These materials may be used alone or in combination of two or more. The cover portion preferably contains the above material as well as the container body. For the container body, it is more preferred to use polyethylene and/or polypropylene, and it is preferred to use polypropylene. On the other hand, it is more preferable to use polyethylene and/or polypropylene for the lid portion, and it is more preferable to use polyethylene. Regarding the lid portion, when a tear tape is used as described below, polyethylene which is a softer material is suitably used.

In the present invention, when the container body is difficult to be deformed, it is difficult to open the lid. However, on the other hand, in the case where the container body is easily deformed, there is a possibility that the cover is easily opened due to a slight impact on the container body. In the case where the shape of the container body and the lid portion are substantially circular, the deformation rate p obtained by the following formula (1) is exemplified as a reference for the allowable range of the opening ease of the lid.

Formula (1) p={(R-r)/R}×100

(In the above formula (1), p represents a deformation ratio (%), R represents a maximum diameter (mm) of the container body before deformation, and r represents a short diameter (mm) of the container body at the time of deformation.)

In addition, the above-mentioned "maximum diameter of the container body" means the length of the longest diameter when the container body is viewed from the upper edge side thereof, and the above-mentioned "short diameter of the container body during deformation" means the time of deformation. The length of the shortest diameter of the container body when viewed from the upper edge side thereof.

The locking portion is locked to the first engaged portion (and the other locked portion in the case where it is present, and the above-mentioned locked portion may be collectively referred to as "the first engaged portion or the like") When the release is performed, the deformation ratio p obtained by the above formula (1) is preferably 7.0% or more and 8.5% or less. If the deformation rate p is less than 7.0% when the card is released, there is a case where the lid is opened even when the container body is deformed by a small amount of impact. On the other hand, if the deformation rate p exceeds 8.5% and the locking is released, there is a demand for the container body to be deformed more greatly in order to open the lid, and the burden on the user of the packaging container is large. The deformation rate p at the time of releasing the above-described locking is more preferably 7.2% or more and 8.0% or less, further preferably 7.5% or more and 7.8% or less.

In the present invention, when the container body is difficult to be deformed, it is necessary to impart a larger external force for the opening of the lid. On the other hand, however, when the container body is easily deformed, it is crushed when an external force is applied and cannot be restored to its original shape. In particular, the tolerance of the flexibility of the container body is naturally limited in order to open the lid with one hand. As a criterion for specifying the allowable range of the flexibility of the container body, for example, an external force should be applied in order to release the locking. When the engagement of the locking portion with respect to the first engaged portion or the like is released, the external force applied to the container body is preferably 35.0 N or more and 60.0 N or less. If the external force is less than 35.0 N, the container body is too soft, so that the shape of the container body cannot be restored even if the lid is opened. On the other hand, if the card is released by a force exceeding 60.0 N, it is difficult to open the cover. The external force at the time of releasing the above-described locking is preferably 40.0 N or more and 55.0 N or less, and more preferably 42.8 N or more and 51.0 N or less. In the present invention, the stress generated on the container body due to the external force required for the opening of the lid is preferably less than the elastic limit of the container body.

As shown in FIG. 1, the lid portion 2 may be provided with a grip portion 6 for opening and a tear strip 7 connected to the grip portion 6. The tear tape 7 can be removed from the cover portion 2 by pinching the grip portion 6 with a finger and pulling it. The lid portion 2 can be opened by the following method of applying an external force to the container. Also, the cover portion 2 can be closed to the illustrated state, that is, it can be reclosed.

As shown in FIGS. 1 and 2, the cover portion 2 may be provided with an indication portion 8 for indicating an appropriate position for applying an external force. The indication portion 8 is preferably provided in the vicinity of the first locked portion described below. The reason for this is that the user of the container can easily release the locking of the first engaged portion by applying an appropriate external force to the pointing portion 8. Examples of the indication unit 8 include printing, coloring, or engraving the instruction unit 8, or stereoscopically forming the indication unit 8. Although not shown, the same indicator portion may be provided in the vicinity of the hinge portion. Thereby, the user of the container can be instructed to both the position in the vicinity of the first engaged portion and the position in the vicinity of the hinge portion, and the opening of the cover can be facilitated.

As shown in FIGS. 1 and 2, a switch gripping portion 9 may be provided in the vicinity of the tear tape 7. The cover can also be opened by pushing the switch gripping portion 9 up.

As shown in Fig. 2, a locking portion 1c is provided on the outer side of the opening of the container body 1. The shape, the number, and the like of the locking portion 1c are not particularly limited as long as the first engaged portion or the like can be locked. For example, when the first engaged portion or the like has a convex shape, the locking portion may be a groove corresponding to the shape of the first engaged portion or the like. On the other hand, unlike the one shown in FIG. 2, in the present invention, the locking portion may be a ridge ring, and the first engaged portion or the like may be a groove. Further, when there are two or more cases in which the first engaged portion or the like is present, the shape of each of the locked portions may be changed, and the locking portion may be provided in combination with the respective shapes.

The locking portion 1c may be provided on the outer circumference of the vicinity of the opening portion 3. In this case, in the manufacturing step of the packaging container, the first locked portion or the like can be stopped by the locking portion 1c regardless of the orientation of the container body 1. On the other hand, in the present invention, the locking portion may be provided in a portion near the opening portion, and the first engaged portion may be provided over the entire circumference.

In the present invention, only one of the locking portions may be provided, or two or more of them may be provided. For example, only one of the locking portions is provided. In other words, an example in which only one groove or a convex shape is provided in one portion on the outer side in the vicinity of the opening portion, and only one groove or a ridge ring is provided on the entire outer side in the vicinity of the opening portion. For example, the second or more locking portions are provided. In other words, an example in which two or more grooves or convex shapes are intermittently provided on the outer side in the vicinity of the opening portion, and a double or triple groove or a ridge ring is provided on the outer side in the vicinity of the opening portion.

The shape of the container body is not particularly limited. Examples of the shape of the container body include a cylindrical shape, a prismatic shape, a spherical shape, an elliptical spherical shape, and the like. Further, as in the sixth embodiment described below, the shape of the portion of the container body such as the main body portion of the container body that does not directly participate in the opening of the lid can be freely designed.

The shape of the lid portion is also not particularly limited. The term "shape of the lid portion" as used herein refers to the shape of the lid portion in a plan view. When the lid portion includes the fitting ring portion 4 and the lid body 5, it refers to the shape of the entire lid portion after the members are combined. . In FIGS. 1 and 2, both the container body 1 and the lid portion 2 are circular in plan view, but the container body 1 and the lid portion 2 do not have to have the same shape in plan view, and may be different from each other. The planar shape of the lid portion is preferably substantially circular or substantially elliptical in view of high symmetry and excellent design.

In the present invention, a hinge portion that connects the other portion of the lid portion and the container body may be provided as a part of the lid portion. In the case where the lid portion includes the fitting ring portion and the lid body, the hinge portion preferably serves as a member that connects the fitting ring portion and the lid body. In this case, the fitting ring portion is fitted to the upper end of the container body (or In the annular port member, the hinge portion functions to connect the container body and the cap body. The hinge portion is preferably elastically deformable in the same manner as the other portion of the lid portion or the container body.

In the present invention, in the case where the lid portion and the container body are joined, the joining means is not limited to the hinge. However, in the present invention, the container body and the lid portion may be separated in the open state of the lid. In this case, a connecting means such as a hinge portion is not required.

Fig. 3 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the first embodiment. Hereinafter, a case where the lid portion includes the fitting ring portion and the lid body will be mainly described. Further, in Fig. 3, Fig. 9 to Fig. 12, and Fig. 14, the bottom view of the cover body which is cut by the one-dot chain line A in the right side cross-sectional view (upper side of the figure) corresponds to a bottom cross-sectional view of the lower side of the figure. As shown in the right side cross-sectional view of the upper side of FIG. 3, the lid portion 2 is configured by the fitting ring portion 4 and the lid body 5 being coupled via the hinge portion 10. In FIG. 3, the tear tape 7 is drawn as another component.

As shown in the right side cross-sectional view of the upper side of FIG. 3, the cap body 5 is provided with a top plate 21, an outer cylindrical hanging wall 22, and an inner cylindrical hanging wall 23. As shown in the figure, the top plate 21, the outer cylindrical hanging wall 22, and the inner cylindrical hanging wall 23 are integrally formed, and a switch grip portion 9 is provided on the front side of the outer cylindrical hanging wall 22. The outer cylindrical hanging wall 22 hangs from the outer periphery of the top plate 21, and a part thereof (the rear side of the container, that is, the left side portion of the drawing) is coupled to the hinge portion 10 and connected to the fitting ring portion 4.

The first engaged portion that is locked by the locking portion is provided on the outer cylindrical hanging wall. In the first embodiment, the position of the first engaged portion is set to a position on the opposite side of the connection position with the hinge portion. Further, in the present embodiment, the direction in which the first engaged portion protrudes is a direction from the inner circumferential surface of the outer cylindrical hanging wall toward the center of the top plate. As shown in the right side sectional view of the upper side of FIG. 3, in the present embodiment, the first engaged portion 24 is provided at a position completely opposite to the connection position between the outer cylindrical hanging wall 22 and the hinge portion 10 (in front of the container, that is, The right part of the figure). That is, this means that the position of the center of the first locked portion in the circumferential direction is at a position separated from the center in the circumferential direction of the joint position 10a by 180° as shown in the bottom cross-sectional view of the lower side of FIG. 3 . As shown in the right side cross-sectional view of the upper side of FIG. 3, the first to-be-locked portion 24 is disposed on the inner side of the switch grip portion 9. However, in the present embodiment, the position of the first engaged portion may be at least a position opposite to the connection position with the hinge portion. Here, the "position on the opposite side to the joint position with the hinge portion" means a position substantially opposite to the joint position with the hinge portion, and means a fixed region including a position completely opposite to the joint position. Therefore, the center of the first locked portion in the circumferential direction may be present in the region. In this range, the center of the first locked portion in the circumferential direction and the position completely opposite to the connected position may be slightly deviated. In this case, the cover portion can also be deformed, and the cover can be smoothly opened.

As shown in the bottom cross-sectional view of the lower side of Fig. 3, it is preferable that the first to-be-locked portion 24 (indicated by oblique lines) is present on the inner circumferential surface of the outer cylindrical sagging wall in a fixed angular range. The angles mentioned here are equal to θ _{1 in} the figure. θ _{1 is} preferably 3° or more and 120° or less, more preferably 30° or more and 100° or less, and still more preferably 60° or more and 90° or less. When θ _{1 is} less than 3°, the portion occupied by the first engaged portion of the outer cylindrical hanging wall is too narrow, so that the locking of the cover is insufficient. On the other hand, when θ ₁ exceeds 120°, the portion occupied by the first locked portion of the outer cylindrical hanging wall is excessively large, so that it is difficult to release the locking, and it is difficult to open the cover by the following method. More preferably, the first engaged portion 24 is provided in a range of 1.5° or more and 60° or less from the center in the circumferential direction of the first to-be-locked portion 24 to the both sides.

In the present invention, it is preferable that the first engaged portion is provided at a portion of the inner circumferential surface of the outer cylindrical hanging wall. Fig. 14 is a right side sectional view and a bottom cross-sectional view showing a reference example of the lid portion 2. Fig. 14 shows the same as Fig. 3 except that all of the first engaged portion 27 (indicated by oblique lines) is provided on all of the outer cylindrical hanging walls. When the reference example is used, the first engaged portion 27 is uniformly locked to the locking portion, and as a result, it is difficult to cause the cover portion to bulge even if an external force is applied. However, the present invention can be exerted by appropriately adjusting the shape of the locking portion, the height of the first engaged portion 27 with respect to the outer cylindrical hanging wall, or changing the height or strength according to the portion of the first engaged portion 27. The effect.

As shown in the right side sectional view of the upper side of Fig. 3, the inner cylindrical hanging wall 23 is suspended from the inner surface of the top plate 21, and is located further inside the outer cylindrical hanging wall 22. The height of the wall of the inner cylindrical hanging wall 23 may also differ depending on the location of the cover. The height of the wall referred to herein refers to the distance from the point of contact with the top plate 21 in the inner cylindrical sagging wall 23 to the front end of the wall from which the point hangs.

In particular, as shown in the right side cross-sectional view of the upper side of FIG. 3, the height of the wall of the inner cylindrical sag wall 23 at the rear of the container (the left side portion of the figure) is preferably the inner tube of the front of the container (the right portion of the figure). The height of the wall of the drooping wall 23 is high. The reason for this is that when the cover is opened, the inner cylindrical hanging wall 23 of the rear portion of the container (near the hinge portion 10) acts to push up against the inner side of the opening of the container body, so that the height of the wall is higher. If it is low, the push up becomes insufficient. On the other hand, the inner cylindrical hanging wall 23 at the front portion of the container does not have such an effect. Conversely, in order to break the sealed state of the container body as soon as the lid is opened, the inner cylindrical hanging wall 23 at the front portion of the container is preferable. The height of the wall is moderately low. From this point of view, the height of the wall of the inner cylindrical hanging wall 23 at the rear of the container is preferably 1.0 times and more than 1.5 times, more preferably 1.1 times the height of the wall of the inner cylindrical hanging wall 23 in front of the container. Above and 1.4 times or less.

The shape of the inner cylindrical hanging wall is formed along the shape of the inner wall of the upper end of the opening of the container body. When the lid is closed, the inner cylindrical hollow wall is closely adhered to the inner surface of the upper end of the opening to maintain the sealing property of the packaging container, thereby ensuring the reclosing property.

Hereinafter, details of the opening of the lid using the first embodiment will be described with reference to Figs. 4 to 8 . 4 to 8 are views showing a series of forms of the packaging container from the closed state to the fully open state. Fig. 4 is a right side sectional view showing the first embodiment. In Figure 4, no external force is applied to the container. The upper portion (cover portion) of Fig. 4 indicates the same as the right side cross-sectional view of the upper side of Fig. 3 except that the tear tape 7 is removed. The container body member 1a, the annular port member 1b, and the locking portion 1c are further shown in Fig. 4 . An annular port member 1b is fitted and fixed to the upper edge of the container body member 1a. Further, the fitting ring portion 4 is fitted to the annular port member 1b from the outside. The first engaged portion 24 is stopped by the locking portion 1c provided on the outer side of the opening of the container body. As a result, the entire top plate 21 covers the opening and closes the packaging container. Further, the inner cylindrical hollow wall 23 of the lid body is in close contact with the inner surface wall of the upper end of the opening of the annular port member to maintain the sealing property of the packaging container.

Fig. 5A is a right side cross-sectional view showing the first embodiment before releasing the locking of the cover. 5B is a right side view of the model of the first embodiment before the card is unlocked with one hand, and FIG. 5C is a front view. Comparing Fig. 4 with Fig. 5A, it can be seen that in Fig. 5A, the top plate 21 is convexly warped toward the container. In the first embodiment, an external force is applied in a direction in which the distance between the vicinity of the hinge portion 10 of the container body and the vicinity of the first locked portion 24 is shortened in the first embodiment 100, whereby the container is used. The upper end of the body is deformed. Here, the direction in which the distance between the vicinity of the hinge portion 10 of the container body and the vicinity of the first engaged portion 24 is shortened is a direction substantially parallel to the horizontal direction of the container and inward with respect to the container in FIG. 5A, and The term "external force" refers to the force acting on the container from the outside. In other words, an external force is applied from the left and right sides of the paper surface of FIG. 5A toward the inside of the container, centering on the vicinity of the hinge portion 10 of the container body and the vicinity of the first to-be-locked portion 24.

The force required to open the lid may be any force that is at least to the extent that the upper end of the container body is deformed. In the present invention, the method of applying the external force is not particularly limited. For example, in addition to the method of flattening the upper end portion of the container body, a method of gripping the upper end portion of the container body or pinching a part of the upper end portion of the container body may be mentioned. Method and so on. The portion to which the external force is applied is also not particularly limited, and an external force can be applied to any portion of the container body. However, since the deformation of the upper end portion of the container body is required for the opening of the lid, it is preferable to apply an external force to the upper end portion of the container body. As an example of a method of applying an external force, a method of pressing the vicinity of the hinge portion 10 of the container body or the vicinity of the first to-be-locked portion 24 with an index finger or the like as shown in FIG. 5B or FIG. 5C is considered. The thumb is squeezed to care about the other, and in this state, the thumb and the index finger are brought close to each other to bend the container body. This method is particularly effective when the container body is of a size that can be grasped with one hand. As another method of imparting an external force, for example, a method of pressing the vicinity of the hinge portion 10 of the container body against a wall or the like, and pressing the vicinity of the first engaged portion 24 of the container body with a thumb or a fist is considered. The container body is bent by bringing the thumb toward the wall. The concept of imparting an external force to the container body is such that the shape of the cross-sectional shape of the container body at rest is deformed. For example, when the cross-sectional shape of the container body in the plan view is substantially circular, the cross-sectional shape is a substantially elliptical shape when the external force is applied.

By deforming the upper end portion of the container body, the deformation propagates from the hinge portion 10 and the first engaged portion 24 to the entire cover portion to deform the cover portion. A more detailed explanation is as follows. By the deformation of the upper end portion of the container body, the portion of the outer cylindrical hanging wall that is coupled to the hinge portion 10 moves following the hinge portion 10, and the first locked portion 24 of the outer cylindrical hanging wall follows the locking portion. The locking portion 1c moves. However, the portion other than the above in the outer cylindrical hanging wall does not follow any portion of the upper end portion of the container body, and therefore the bulge from the container body causes the shape of the lid portion to be deformed. In particular, as shown in FIG. 5A, the cover portion is deformed by a top plate 21 having a relatively large area in the cover portion and having a surface substantially parallel to the external force, so that the top plate 21 is convex toward the container. Warping. In each of the photographs of Figs. 5B and 5C, the cover portion is deformed and the top plate is warped. As a result, a portion of the annular port member hidden on the back side of the cover body at the time of closing can be visually recognized from the outside.

Thus, the opening of the lid in the present invention occurs by the deformation of the upper end portion of the container body and the deformation of the lid portion. In the present invention, regardless of the position of the first engaged portion or the presence or absence of the hinge portion, the deformation of the upper end portion of the container body propagates at least from the first engaged portion to the entire cover portion and is interlocked with the deformation of the cover portion. This becomes an opportunity for the cover to open.

Fig. 6 is a right side cross-sectional view showing the first embodiment in which the sealing of the packaging container has just been broken. During the period from FIG. 5A to FIG. 6, the stress accumulated in the top plate 21 exceeds the force at which the locking portion 1c catches the first engaged portion 24, whereby the card is released by the force of the top plate 21 to return to the original shape. The stopper 1c locks the first engaged portion 24. In this case, it can be considered that the top plate 21 obtains an elasticity, and the cover body 5 is opened in a pop-up manner according to the magnitude of the accumulated stress or the material of the top plate 21. As a result, one of the inner cylindrical hanging walls 23 abuts against the opening of the container body, and the sealed state is broken.

Fig. 7 is a right side cross-sectional view showing the first embodiment before the sealing is broken and the lid is fully opened. The release of the card in Fig. 6 may be suddenly generated, so that the cover body may bounce as the case may be. Therefore, with this force, it is preferable that the inner cylindrical hanging wall 23a in the vicinity of the hinge portion 10 is pushed up by the inner side 1d of the opening, thereby opening the opening. Since the contact portion between the inner cylindrical hanging wall 23a and the inner portion 1d of the opening smoothly slides, the opening of the opening smoothly proceeds. Fig. 8 is a right side sectional view showing the first embodiment after the cover is fully opened. As shown in Fig. 8, the inner cylindrical hanging wall 23 abuts against the upper edge of the opening portion 3, whereby the opening of the cover is completed. Further, when the external force is released from the packaging container, the shape of each member of the packaging container is restored to its original shape.

As shown in Fig. 8, in the first embodiment, the opened lid body is coupled to the container body. However, in the present invention, in the open state of the lid, the container body and the lid portion do not necessarily need to be connected to each other, and may be separated. In this case, depending on the magnitude of the stress accumulated in the lid portion, the lid portion can be made to fly out by the force at the time of opening.

As described above, in the present invention, the lid can be opened by one action of applying an external force to the container body. The principle is that when the first locked portion is provided in at least a part of the lid portion, the lid portion is swelled from the container body when an external force is applied, and as a result, the first engaged portion is detached from the locking portion, thereby opening the lid. . In particular, when the container of the present invention is of a size that can be grasped by one hand, the cover can be opened by the gripping hand, and a relatively simple opening operation can be realized. Further, it is also possible to adopt a configuration in which the stress accumulated by the deformation of the lid portion is used to strongly buck the lid portion at the time of opening. In the case of adopting this configuration, it is also possible to add entertainment to the opening of the cover by further applying characters, figures, symbols, three-dimensional shapes or colors, or a combination thereof, to the back surface of the top plate.

In the present invention, the sealing property of the container is ensured by the shape of the inner cylindrical hanging wall of the lid portion along the shape of the inner wall of the upper end of the opening of the container body. On the other hand, the locking of the lid portion is ensured by the locking portion of the container body and the first engaged portion of the lid portion. As described above, in the present invention, the portion responsible for the airtightness and the portion responsible for the locking function are separately provided, so that the locked portion can be freely designed without sacrificing the airtightness of the container (and the reclosing property thereof). Therefore, the first locked portion 24 can be provided in one of the outer cylindrical hanging walls as shown in the bottom cross-sectional view of Fig. 3, and as a result, the lid portion can be easily opened.

Further, in the present invention, unlike the opening mechanism of the conventional cover, the biasing force of the spring is not necessarily required in the hinge portion. The reason for this is that, as described in the description of FIGS. 5A and 6 described above, the external force is mainly applied to the top plate to accumulate stress, so that the top plate obtains an elasticity, and as a result, the locking is released and the cover is automatically opened. However, depending on the material or shape of the lid portion, the size of the packaging container, or the like, a spring or the like may be provided on the hinge portion to assist the lid to be opened.

The size of the packaging container of the present invention is not particularly limited, but from the viewpoint of opening the lid in a one-touch manner, it is preferably a size that can be taken in one hand (portable type). The height of the packaging container of the present invention can be appropriately adjusted depending on the use, and for example, the outer size can be set to 50 to 100,000 mm. The width of the container body in the present invention can be appropriately adjusted according to the use, and can be set to a size that can be grasped with one hand, for example, 50 to 100 mm in size. When the cross-sectional shape of the container body is substantially circular, the length of the container body (the longest diameter in the width direction of the container) may be 100 to 200 mm, and the short diameter (the width direction of the container body) The size of the shortest diameter is set to 20 to 50 mm. The capacity of the container body in the present invention can be appropriately adjusted in the same manner as the above-described size, and can be, for example, 0.1 to 1,000 L.

In addition to the first engaged portion, the second locked portion that is locked by the locking portion may be separately provided. The second engaged portion is provided at a position different from the position at which the hinge portion is connected to the outer tubular hollow wall and the position at which the first engaged portion is present. It is preferable that the second engaged portion is provided at a position substantially at the middle of the connection position with the hinge portion and the position where the first engaged portion exists. When it is assumed that the first engaged portion is provided on the front side of the packaging container, the second locked portion is preferably provided on the side surface side of the packaging container. The second locked portion is preferably extended in the circumferential direction in the outer cylindrical hanging wall. The second engaged portion protrudes from the inner circumferential surface of the outer cylindrical hanging wall toward the center of the top plate. Only one of the second locked portions may be provided, or two or more of them may be provided.

Fig. 9 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the second embodiment. In the second embodiment, a typical example in which the second engaged portion is used is used. The second embodiment is the same as the first embodiment (FIGS. 1 to 8) except that the second locked portion 25 is further provided. As shown in the bottom cross-sectional view of the lower side of FIG. 9, in the second embodiment, the second engaged portion 25 (indicated by oblique lines) is sagged in the outer cylindrical shape when considered as the outer cylindrical hanging wall 22 One position is provided between the connection position 10a of the wall 22 and the hinge portion 10, and the position in the middle of the position where the first engaged portion 24 is present. More specifically, as shown in the figure, the position of the center in the circumferential direction of the second engaged portion is at a position separated from the center in the circumferential direction of the joint position 10a by 90 degrees. By providing the second engaged portion in this manner, the closed state of the cover portion is more sure. In the second embodiment, the second locked portion may be only one of the two, but in order to achieve a well-balanced closure, it is preferable to provide two.

As shown in the bottom cross-sectional view of the lower side of Fig. 9, the second locked portion 25 is preferably present on the inner circumferential surface of the outer cylindrical hanging wall in a fixed angular range. The angles mentioned here are equal to θ _{2 in} the figure. θ _{2 is} preferably 3° or more and 20° or less, more preferably 5° or more and 18° or less, and still more preferably 10° or more and 15° or less. When θ _{2 is} less than 3°, the portion occupied by the second to-be-locked portion of the outer cylindrical hanging wall is too narrow, and thus the closed state of the lid is insufficient. On the other hand, when θ ₂ exceeds 20°, the portion occupied by the second to-be-locked portion of the outer cylindrical hanging wall is excessively large, so that it is difficult to open the cover. More preferably, the second engaged portion 25 is provided in a range of 1.5° or more and 10° or less from the center in the circumferential direction of the second engaged portion 25 to the both sides.

In addition to the first and second blocked portions, the third engaged portion that is locked by the locked portion may be independently provided. The third engaged portion is provided in the vicinity of the connection position between the outer cylindrical hanging wall and the hinge portion. The center of the third locked portion in the circumferential direction may be aligned with the joint position or may be offset from the joint position. The third engaged portion is preferably extended in the circumferential direction in the outer cylindrical hanging wall. The third engaged portion protrudes from the inner circumferential surface of the outer cylindrical hanging wall toward the center of the top plate.

Fig. 10 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the third embodiment. In the third embodiment, a typical example of the third engaged portion is used. The third embodiment is the same as the first embodiment (Figs. 1 to 8) except that the third engaged portion 26 is further provided. As shown in the bottom cross-sectional view of the lower side of FIG. 10, the third to-be-locked portion 26 (indicated by oblique lines) is provided in the vicinity of the connection position 10a between the outer cylindrical hanging wall and the hinge portion. More specifically, as shown in the figure, the center in the circumferential direction of the joint position 10a is aligned with the position in the circumferential center of the third engaged portion 26. As shown in the bottom cross-sectional view of the lower side of FIG. 10, the third engaged portion 26 is preferably present on the inner circumferential surface of the outer cylindrical hanging wall in a fixed angular range. The angles mentioned here are equal to θ _{1 in} the figure. The numerical range of θ ₁ is the same as that in the case of the above-described first engaged portion. Furthermore, _a different angle with respect to the first portion of the stopper 3 θ card ₁ may be the same angle, it may also be on the card [theta] 1 is the first portion of the stopper.

Fig. 11 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the fourth embodiment. The fourth embodiment is the same as the first embodiment (FIGS. 1 to 8) except that the second to-be-locked portion 25 and the third to-be-locked portion 26 are further provided. Further, the second to-be-locked portion 25 and the third to-be-locked portion 26 are as described above.

In the above-described first to fourth embodiments, only one of the first engaged portions is provided at a position opposite to the connection position between the outer cylindrical hanging wall and the hinge portion. However, in the present invention, the position or the number of the first engaged portions is not particularly limited. Fig. 12 is a right side sectional view and a bottom cross-sectional view of the lid portion 2 in the fifth embodiment. The fifth embodiment is the same as the first embodiment (Figs. 1 to 8) except for the position and the number of the first engaged portions 24. As shown in the bottom cross-sectional view of the lower side of Fig. 12, in the fifth embodiment, the two first engaged portions 24 (indicated by oblique lines) are located at the center in the circumferential direction and the outer cylindrical hanging wall 22 and the hinge portion 10, respectively. The center of the circumferential direction of the joint position 10a is separated by 90°. The position of the first engaged portion 24 is the same as the position of the second locked portion 25 of the second embodiment (FIG. 9). However, in the fifth embodiment, when the position of the first engaged portion is determined, the connection position 10a between the outer cylindrical hanging wall and the hinge portion is not particularly limited. Therefore, the fifth embodiment can also be applied to a packaging container that does not use a hinge as a connecting means between the container body and the lid portion, or a packaging container in which the container body and the lid portion are separated in a state where the lid is opened. As shown in the bottom cross-sectional view of the lower side of FIG. 12, it is preferable that the first to-be-locked portion 24 exists in the inner circumferential surface of the outer cylindrical hanging wall in a fixed angular range. The angles mentioned here are equal to θ _{1 in} the figure. The numerical range of θ _{1 is} the same as that of the first embodiment described above. Although the two first to-be-locked portions 24 are depicted in FIG. 12, in the fifth embodiment, the number of the first to-be-locked portions may be one or three or more. However, in order to achieve a well-balanced closing in the fifth embodiment, it is preferable to provide two or more first locking portions, and it is preferable to arrange the first one equally in the plan view shape of the outer cylindrical hanging wall 22. The locking portion. In the case where two or more first to-be-locked portions are provided, the sizes or shapes thereof may be the same or different.

In the case where the first engaged portion is provided at any position of one of the inner circumferential surfaces of the outer cylindrical hanging wall, the upper end portion of the container body is adjacent to the first engaged portion in order to open the cover. An external force is applied in a direction in which the distance from the opposite side (in the vicinity of the other first engaged portion in Fig. 12) is shortened, whereby the upper end portion of the container body is deformed. For example, when the first engaged portion is provided on the side surface side of the container as shown in FIG. 12, the container body is flattened and deformed from the left and right sides. Further, when the first engaged portion is provided on the obliquely forward side of the container, the container body is sandwiched from the oblique front side and the opposite side to be flattened and deformed. The deformation of the upper end portion of the container body propagates from the first engaged portion and the opposite side portion thereof to the entire cover portion. As will be described in more detail, the first locked portion of the outer cylindrical hanging wall moves following the locking portion that is locked by the deformation of the upper end portion of the container body, and the first card is engaged. The portion of the stop on the opposite side also moves in accordance with the portion of the corresponding container body. However, the portion other than the above in the outer cylindrical hanging wall does not follow any portion of the upper end portion of the container body, and thus the bulge from the container body causes the shape of the lid portion to be deformed. Thus, the deformation of the upper end portion of the container body and the deformation of the lid portion serve as a trigger for the lid to open.

Fig. 13 is a perspective view showing a sixth embodiment of the packaging container of the present invention. In the sixth embodiment, the lower portion of the container body has the same diameter as the upper portion of the container body, and is the same as any of the first to fifth embodiments (Figs. 1 to 12). The present invention has the main features in opening the lid so that the shape of the container body can be freely selected within the limits of not damaging the feature. For example, as shown in Fig. 13, the lid to the neck of the container may be configured in the same manner as in the first embodiment, and the main body portion 30 of the container body may be enlarged. Further, although not shown in the drawings, for example, the main body portion 30 may be polygonal or spherical, or may be shaped like an animal, a plant, a vehicle or a building, and all other objects. . The first to fifth embodiments are mainly hand-held containers, and one of the effects is that they can be easily opened with the hand in a state of being grasped with one hand. On the other hand, in the sixth embodiment, the container body may be large in size and substantially incapable of being picked up. By making the lid and the vicinity thereof the configuration of the present invention, the lid can be simply closed with one hand. Open.

A modification of the present invention is a packaging container including a container body having an opening at an upper edge and at least an upper end portion being elastically deformable, and a lid portion closing the opening, wherein the lid portion includes a top plate; An outer cylindrical hanging wall that hangs from the outer periphery of the top plate; and an inner cylindrical hanging wall that hangs down from the inner surface of the top plate and is located further inside the outer cylindrical hanging wall and along the upper end of the opening a shape of an inner surface wall; a locking portion is provided on an outer side of the opening portion; and a first locked portion that is locked by the locking portion is provided on an inner circumferential surface of the outer cylindrical hanging wall, The locking portion and the first engaged portion close the lid portion, and the inner cylindrical hollow wall and the upper inner wall of the opening portion ensure the airtightness inside the container.

This modification has a more simplified configuration in which the external force is removed and the opening of the lid portion is removed from the first to sixth embodiments. In the above-described modification, the sealing function (and the reclosing function accompanying the same) and the locking function can be utilized in different portions, and the effect is excellent in practical use. By thus using the two functions required to share the packaging container by the different parts, it is not necessary to provide the locking portion as a whole, and it can be provided in one part of the cover. As a result, the resistance received from the locked portion can be minimized when the cover is opened, and the cover can be opened with a relatively small force.

[Examples] Hereinafter, the present invention will be specifically described by way of examples and comparative examples, but the present invention is not limited to the examples.

 1. Manufacturing of packaging containers    [Example 1]  

The packaging container shown in the first embodiment described above was produced. First, the container body member, the annular port member, and the lid portion are molded by injection molding. The material and average wall thickness of each part are as follows.

Container body member: made of polypropylene, with an average wall thickness of 1.0 mm

Annular port member: made of polypropylene, with an average wall thickness of 1.0mm

Cover: polyethylene, average wall thickness 1.5mm

The container main body member and the annular port member are as shown in Figs. 2 and 4, respectively. The lid portion is the one shown in Fig. 3 (first embodiment). At this time, the angle θ ₁ = 60° of the locked portion is set.

Next, the annular port member was fixed to the upper edge of the container body, and the lid portion and the annular port member were fitted together to obtain the packaging container of the first embodiment. The shape and dimensions of the completed packaging container are as follows.

The shape of the packaging container: cylindrical shape

Size of packaging container (outer size): height: 89.0mm

Width (diameter of the cylinder): 66.4mm

Capacity: 0.240L

 2. Compression test of packaging container  

The packaging container of Example 1 was subjected to a compression test. Specifically, using a Tensilon universal testing machine (manufactured by Orientec Co., Ltd., model: RTC-1225A), the packaging container of Example 1 (maximum diameter of the container: 66.4 mm) The vicinity of the hinge portion of the container body and the direction in which the distance between the vicinity of the first engaged portion is shortened is given an external force and is crushed, and the displacement amount and the respective load peaks at the time of releasing the cover and the full opening of the cover are performed. measuring. Furthermore, the term "displacement amount" as used herein refers to the maximum diameter of the container (ie, the size outside the diameter of the container: 66.4mm) The difference between the short diameter of the container when crushed. In addition, the term "when the cover is released" refers to the state shown in Fig. 6, and the "when the cover is fully opened" means the state as shown in Fig. 8. Details of the test methods are as follows.

Test speed: 30mm/min

Weight range: 100N

The measurement system was carried out under the same conditions for five containers and the average value thereof was determined. Further, in all five containers, after the external force was released, the shape of each member of the container (the container body member, the annular port member, and the lid portion) was restored to the original shape in a state where the lid was fully opened.

Table 1 below is a table summarizing the displacement amount, the deformation rate, the load peak value of the five containers, and the average value thereof. Further, the experiment numbers 1 to 5 were added for the sake of convenience, and corresponded to the results of the five containers, respectively. In addition, the "deformation rate" in Table 1 means the value obtained by the following formula (1).

Formula (1) p={(R-r)×R}×100

(In the above formula (1), p represents a deformation ratio (%), R represents a maximum diameter (mm) of the container body before deformation, and r represents a short diameter (mm) of the container body at the time of deformation.)

Further, Table 2 below is a table summarizing the maximum diameter of the container before compression and the average amount of deformation at the time of compression.

According to the results of the above-mentioned Table 1, it is confirmed that when the container body and the lid portion have a substantially circular shape in plan view, the deformation rate p at the time of releasing the lid is 7.5% or more and 7.8% or less. At this time, the load is 42.76N or more and 50.99N or less. Further, it was confirmed that the deformation rate p at the time of full opening of the lid was 12% or more and 13% or less, and the load at this time was 34.32 N or more and 36.97 N or less. Further, after the external force is released, the shape of each member of the container is restored to the original shape, and it is confirmed that the stress generated by the container body due to the release of the locking of the cover and the full opening of the cover is less than the elasticity of the container body. limit.

Further, according to Tables 1 and 2 above, it was found that the container having the maximum diameter of the container of 66.4 mm was released at the time point of the average compression of 5.04 mm. Also, the average value of the load-bearing peak at this time was 47.25 N. On the other hand, according to the tables, it was found that the lid was fully opened at the time of the average compression of 8.08 mm for the same container. Moreover, the average value of the load-bearing peak at this time is 35.60N. Further, according to these tables, it was found that the average deformation rate at the time of releasing the lid was 7.6%, and the average deformation ratio at the time of full opening of the lid was 12%.

Claims (17)

 A packaging container comprising: a container body having an opening at an upper edge thereof and at least an upper end portion being elastically deformable; and a lid portion closing the opening portion; the packaging container being characterized by the lid portion The utility model comprises: a top plate; an outer cylindrical hanging wall which hangs from the outer periphery of the top plate; and an inner cylindrical hanging wall which hangs from the inner surface of the top plate and is located further inside than the outer cylindrical hanging wall, and along a shape of an inner surface of the upper end of the opening; a locking portion provided on an outer side of the opening, and a first locked portion that is locked by the locking portion on an inner circumferential surface of the outer cylindrical hanging wall By applying an external force to the container body, the upper end portion of the container body is deformed, and the deformation propagates from at least the first engaged portion to the entire cover portion to deform the cover portion, thereby releasing the card. The stopper is locked to the first engaged portion, and the inner cylindrical hanging wall is pushed up by the inner side of the opening, thereby opening the opening.    The packaging container according to claim 1, wherein the first engaged portion is provided at a portion of the inner circumferential surface of the outer cylindrical hanging wall, and the upper end portion of the container body is adjacent to the first engaged portion An external force is applied in a direction in which the distance from the opposite side is shortened, and the upper end portion of the container body is deformed, and the deformation propagates from the first blocked portion and the opposite side portion to the entire cover portion to cause the cover portion to be generated. deformation.    The packaging container according to claim 1 or 2, wherein the lid portion is slidably coupled to the container body via a hinge portion so as to close the opening portion.    The packaging container according to claim 3, wherein the hinge portion is provided in the vicinity of the opening portion, and one of the outer cylindrical hanging walls is coupled to the hinge portion, and the first engaged portion is located at least with the outer cylindrical hanging wall The inner peripheral surface of the outer cylindrical hollow wall protrudes toward the center of the top plate, and the distance between the vicinity of the hinge portion of the container body and the vicinity of the first locked portion is shortened. An external force is applied to deform the upper end portion of the container body, and the deformation propagates from the hinge portion and the first engaged portion to the entire cover portion to deform the cover portion, thereby releasing the locking portion. The opening of the first engaged portion and the inner cylindrical hanging wall in the vicinity of the hinge portion are pushed up by the inner side of the opening to open the opening.    The packaging container according to any one of claims 1 to 4, wherein the container body comprises: a container body member having an upper edge opening and at least an upper end portion elastically deformable; and an annular mouth member fixed to the above The cover body has an upper edge and is elastically deformable; the cover portion includes a fitting ring portion that is externally fitted to the annular port member and is elastically deformable, and a cover body for opening and closing the opening portion; The cover body includes the top plate, the outer cylindrical hanging wall, and the inner cylindrical hanging wall.    The packaging container according to any one of claims 1 to 5, wherein the first to-be-locked portion is present in an inner circumferential surface of the outer cylindrical hanging wall in an angular range of 3° or more and 120° or less in the circumferential direction.    The packaging container according to any one of claims 1 to 6, wherein the locking portion is provided on the outer circumference of the vicinity of the opening.    The packaging container according to any one of claims 1 to 7, wherein the cover portion is elastically deformable.    The packaging container according to any one of claims 1 to 8, wherein the cover portion has a substantially circular shape or a substantially elliptical shape in plan view.    The packaging container according to any one of claims 1 to 9, wherein the container body and the lid portion have a substantially circular shape in plan view, and when the locking is released, the method is as follows: The deformation rate p is 7.0% or more and 8.5% or less, and the formula (1) p={(Rr)/R}×100 (in the above formula (1), p represents the deformation ratio (%), and R represents the above deformation. The maximum diameter (mm) of the container body, and r is the short diameter (mm) of the container body at the time of the above deformation.    The packaging container according to any one of claims 1 to 10, wherein the container body has an average wall thickness of 0.10 mm or more and 10 mm or less.    The packaging container according to any one of claims 1 to 11, wherein the upper end portion of the container body has an average wall thickness of 0.10 mm or more and 10 mm or less.    The packaging container according to any one of claims 1 to 12, wherein the container body comprises a polyethylene, a polypropylene, a polyethylene terephthalate, a polyamide, a polycarbonate, and a polyvinyl chloride. At least one material selected by the group.    The packaging container according to any one of claims 4 to 13, wherein at least one position different from a position at which the connection portion between the outer tubular hollow wall and the hinge portion and the first locked portion are present is different. The second to-be-locked portion is provided so as to protrude from the inner circumferential surface of the outer cylindrical hanging wall toward the center of the top plate, and is locked by the locking portion.    The packaging container according to claim 14, wherein the second engaged portion is present on the inner circumferential surface of the outer cylindrical hanging wall in an angular range of 3° or more and 20° or less in the circumferential direction.    The packaging container according to any one of claims 4 to 15, wherein a third engaged portion is provided in a vicinity of a connection position between the outer cylindrical hanging wall and the hinge portion, and the third locked portion is from the outer side The inner peripheral surface of the cylindrical hanging wall protrudes toward the center of the top plate, and is locked by the locking portion.    The packaging container according to claim 16, wherein the third engaged portion is present on the inner circumferential surface of the outer cylindrical hanging wall in an angular range of 3° or more and 120° or less in the circumferential direction.