JP2004307038A - Packaging container, and inside plug - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container in which an inside plug thereof is improved in both installation stability and attachment/detachment facility. <P>SOLUTION: The inside plug 4 which is attachable/detachable to an opening of a container main body of the packaging container, is integrally formed of a nozzle 41 protruding upward and a base portion 40. The base portion 40 formed like a cylinder protrudes downward from the nozzle 41, and abuts on an inner surface of the opening. Further the base portion 40 has a notch 40a formed therein by cutting away part of the base portion 40. The notch functions to absorb deformation of the base portion 40, occurring when the inside plug 4 is removed from the container main body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【００２７】
比較例に関しては、装着安定性には優れているものの、着脱容易性が極めて悪いことが確認された。これに対して、実施例１〜３は、比較例との対比において、着脱容易性が改善されることが確認された。特に、実施例１に関しては、装着安定性と着脱容易性とのバランスが最もよいことが確認された。
【００２８】
【発明の効果】
このように、本発明によれば、基部の変形を許容する切欠部を基部の一部に設けることによって、中栓の装着安定性と着脱容易性との両立を図ることが可能となる。
【図面の簡単な説明】
【図１】包装用容器の展開斜視図
【図２】中栓の外観斜視図
【図３】中栓の取付状態を示す要部断面図
【図４】切欠部の変形例を示す側面図
【図５】切欠部の別の変形例を示す側面図
【図６】ガイド部の変形例を示す外観斜視図
【符号の説明】
１ 包装用容器
２ 容器本体
３ キャップ
４ 中栓
２０ 開口部
４０ 基部
４０ａ 切欠部
４１ ノズル
４１ａ ガイド部
４１ｂ 注出口
４２ 係合部
４２ａ 突出部
４２ｂ 爪部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a packaging container and an inner plug, and more particularly, to a structure of an inner plug that can be attached to and detached from an opening of a container body.
[0002]
[Prior art]
There are various forms of packaging containers, and one of the forms is one in which an inner plug is fitted into an opening of a container body. Generally, this inner plug is often firmly fitted into the opening of the container body in order to prevent accidental falling off in a normal use state. However, the inserted inner plug may need to be removed from the container body in some cases. For example, in a packaging container in which the container body and the inner plug are formed of different materials, it is necessary to remove the inner plug at the time of separate collection. The same operation is required when refilling the empty container body with the contents. Therefore, requirements for such an inner plug include that it is hard to fall off in a normal use state (attachment stability) and that it is easy to remove at the time of removing work (easiness of attaching and detaching).
[0003]
For example, Patent Literature 1 discloses a structure of a removable inner plug. This inner plug has a part of the outer peripheral surface in the peripheral wall portion depressed, and a slit extending in the vertical direction is formed in this depressed portion. The user can easily remove the inner plug from the container body by pushing up the depressed portion with a finger.
[0004]
[Patent Document 1]
JP 2001-97428 A [0005]
[Problems to be solved by the invention]
An object of the present invention is to achieve compatibility between mounting stability of an inner plug and ease of attachment and detachment.
[0006]
[Means for Solving the Problems]
In order to solve such a problem, a first invention provides a packaging container. This packaging container is integrally formed with a container body in which the contents are filled and an opening is provided, an inner plug that is detachable from the opening, and a nozzle protruding upward and a base. And an inner plug. Here, the base protrudes downward from the nozzle in a cylindrical shape, and is in contact with the inner surface of the opening. The base allows deformation of the base that occurs when the inner plug is removed from the container body. The notch is formed by cutting out a part of the base.
[0007]
Here, in the first invention, it is preferable that the notch is formed below a seal portion for preventing liquid leakage between the opening and the inner plug. Further, it is desirable that the cutout portion is constituted by a cut portion tapered upward from a lower edge portion of the base portion and a slit extending upward from the cut portion.
[0008]
Further, in the first invention, it is preferable that a guide portion indicating a direction in which the inner plug is removed from the container main body is provided at one portion of the nozzle corresponding to the notch. Further, it is desirable that the guide portion is formed by depressing a part of the outer peripheral surface of the nozzle.
[0009]
A second invention provides an inner plug which is detachable from an opening provided in a container main body and discharges contents filled in the container main body to the outside. The inner plug has a nozzle projecting upward and a base projecting cylindrically downward from the nozzle and in contact with an inner surface of the opening. Here, a cutout portion that allows deformation of the base portion that occurs when the inner plug is removed from the container body is formed in the base portion by cutting out a part of the base portion.
[0010]
Here, in the second invention, it is preferable that the cutout portion is formed below a seal portion for preventing liquid leakage between the opening portion and the inner plug. Further, it is desirable that the cutout portion is constituted by a cut portion tapered upward from a lower edge portion of the base portion and a slit extending upward from the cut portion.
[0011]
Further, in the second invention, it is preferable to further include a guide portion provided at one portion of the nozzle corresponding to the notch portion and indicating a direction of removing the inner plug from the container body. Further, it is desirable that the guide portion is formed by depressing a part of the outer peripheral surface of the nozzle.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is an exploded perspective view of the packaging container according to the present embodiment. The packaging container 1 includes a container body 2, a cap 3, and an inner plug 4. The container body 2 is a painted bottle, PET, or the like that produces a sense of quality, and the inside thereof is filled with a liquid as a content. In the present embodiment, a hair restorer is assumed as the content, but other cosmetics, bath detergents, toilet detergents, and the like may be used. An opening 20 is provided at an upper portion of the container body 2 and projects upward in a cylindrical shape. The removable inner plug 4 is fitted into the opening 20 from above. Examples of the material of the inner plug 4 include low-density polyethylene (LDPE: Low Density Polyethylene), linear low-density polyethylene, polypropylene, and the like. In addition, resin materials having elasticity can be widely used. . Further, a screw portion is formed on the outer periphery of the opening portion 20, and the cap 3 is detachably attached via the screw portion.
[0013]
FIG. 2 is an external perspective view of the inner plug 4. The inner plug 4 formed integrally has a base 40, a nozzle 41, and an engaging portion 42. The base 40 protrudes downward from the nozzle 41 in a cylindrical shape, and has a sufficient protruding length so that the inner plug 4 does not fall off in a normal use state. The outer diameter of the base portion 40 is substantially the same as the inner diameter of the opening portion 20, and a cutout portion 40a is formed by cutting out a part thereof. In the present embodiment, the notch 40a is formed in a substantially inverted Y-shape. Specifically, it has a triangular cut portion tapered upward from the lower edge of the base 40 and a slit extending upward from the cut portion. The corner of the middle part connecting to is rounded off.
[0014]
The nozzle 41 is of a type called a long nozzle that protrudes relatively long upward, and has a substantially conical shape in which the top is cut off. At the top of the nozzle 41, a spout 41b for pouring out the liquid filled in the container body 2 is provided. In addition, a guide portion 41a is provided on a part of the outer peripheral surface of the nozzle 41 to indicate the direction in which the inner plug 4 is removed when the inner plug 4 is removed. The guide portion 41a corresponds in position to the notch portion 40a, and is specifically provided in the same direction (rotation angle) with respect to the center axis of the inner plug 4. In the present embodiment, the guide portion 41a is formed by depressing a part of the outer peripheral surface of the nozzle 41, and has a structure in which a plurality of steps extending in the horizontal direction are arranged in the vertical direction. Thus, the user can see at a glance the removal direction of the inner plug 4 using the guide portion 41a as a mark. Further, since the guide portion 41a does not protrude from the outer peripheral surface of the nozzle 41, the nozzle 41 can be mounted using the mounting jig for the nozzle (existing nozzle) without the guide portion 41a as it is. This is advantageous also in the manufacturing process.
[0015]
The engaging portion 42 includes a disk-shaped protruding portion 42a protruding outward from the entire circumference of a portion where the base portion 40 and the nozzle 41 are connected, and a claw portion 42b rising below the outer peripheral end of the protruding portion 42a. And
[0016]
FIG. 3 is a cross-sectional view of a main part showing an attached state of the inner plug 4. The distal end of the opening 20 provided in the container body 2 is sandwiched by the base 40, the protruding portion 42a, and the claw 42b, and the inner plug 4 is fixed to the opening 20 by engagement of these. Specifically, in a state where the outer peripheral surface of the base 40 is in contact with the inner peripheral surface of the opening 20, the annular projection formed on the outer peripheral surface of the base 40 allows the opening 20 and the base 40 to be separated from each other. Sealed. That is, the annular convex portion functions as a seal portion for preventing liquid leakage between the opening 20 and the inner plug 4. At this time, the cutout portion 40a is formed below the sealing portion so as not to impair the sealing performance at the sealing portion. At the tip of the claw portion 42b, an inwardly protruding claw is provided over the entire circumference, and this claw is engaged with an annular groove formed on the outer peripheral surface of the opening 20.
[0017]
Next, a method of removing the inner plug 4 will be described with reference to FIG. First, the user puts a finger on the guide portion 41a attached to the nozzle 41 and presses the finger laterally (to the left in the arrow shown). As a result, the lever principle with the fulcrum S at the base of the base 40 on the opposite side (left side) of the guide portion 41a acts, and the inner plug 4 starts to tilt obliquely. With the inclination of the inner plug 4, the base 40 on the guide portion 41a side (right side) is strongly pressed against the inner peripheral surface of the opening 20. At this time, a cutout portion 40a that allows deformation of the base portion 40 is provided on the right side of the base portion 40, and the cutout portion 40a functions as an escape portion of the base portion 40, so that the base portion 40 is easily deformed. Accordingly, the right side of the base 40 is smoothly pulled out upward in response to the pressing of the guide portion 41 a by the user, and the inner plug 4 is removed from the opening 20.
[0018]
As described above, according to the present embodiment, by providing the cutout portion 40a that allows the deformation of the base portion 40 in a part of the base portion 40, it is possible to achieve both the mounting stability of the inner plug 4 and the ease of attachment and detachment. It becomes possible. That is, in the normal use state, even if a force pressing sideways acts on the nozzle 41 against the will of the user, the inner plug 4 does not often come off. This is because, in such a case, a random force can act on the nozzle 41 from an arbitrary direction. Since the probability that the force acts in the direction of the guide portion 41a is lower, even if the force acts, the base portion 40 is hardly deformed, so that the inner plug 4 does not fall off much. Therefore, the mounting stability of the inner plug 4 in a normal use state can be ensured. On the other hand, when removing the inner plug 4 at the user's will, the user himself / herself presses the guide portion 41a, so that a force from a specific direction (a direction in which the base 40 can be easily deformed) always acts on the nozzle 41. Will be. In this case, the base portion 40 is easily deformed by the notch portion 40a corresponding to the position of the guide portion 41a, so that the inner plug 4 can be easily removed. As a result, it is possible to ensure the ease of attaching and detaching the inner plug 4 during the detaching operation.
[0019]
In the above-described embodiment, the notch 40a having a substantially triangular shape has been described as an example. However, the present invention may have any shape as long as the shape allows the deformation of the base 40, and is widely applicable to various shapes including modified examples described below. 4 and 5 are side views showing modified examples of the cutout portion 40a. The notch 40a shown in FIG. 4 is formed by cutting a part of the base 40 into a substantially semicircular shape. The notch 40a shown in FIG. 5 has a plurality of slits extending vertically.
[0020]
In the above-described embodiment, the guide portion 41a having a stepped shape has been described as an example. However, the guide portion 41a may have any shape as long as the user can intuitively grasp the position to be pressed.
[0021]
FIG. 6 is an external perspective view showing a modified example of the guide portion 41a. A substantially elliptical depression is formed in the guide portion 41a shown in FIG. The depression has a curve that is easy for the user to put a finger on, and a projection is formed at substantially the center of the depression. The projection is formed so as not to protrude from the outer peripheral surface of the nozzle 41 due to a mounting jig used in the manufacturing process. The guide portion 41a may be formed by partially changing the shape of the nozzle 41, or may be a characteristic signature printed on a portion of the nozzle 41.
[0022]
Further, for example, a bottle such as a lotion does not have the claw portion 42b for locking, and often uses the inner plug 4 that only pushes the base 40 into the opening 20. The present invention is also applicable to the inner plug 4 having such a structure. However, since the inner plug 4 with the claw portion 42b is more difficult to remove than the inner plug 4 without the claw portion 42b, it would be more effective to apply the present invention to the inner plug 4 with the claw portion 42b.
[0023]
Further, as one form of the inner plug 4, the sealing portion such as an annular convex portion is not formed on the base 40, and the base 40 is projected downwardly into a cylindrical shape having a tapered diameter reduced. The outer diameter of the base 40 close to the protrusion 42a is made larger than the inner diameter of the opening 20 to form a seal portion, and the inner plug 4 is firmly fitted into the opening 20 to secure the sealing property. There is something. The present invention can be applied to such an inner plug 4 as well, but even with such a structure, it is necessary to consider the positional relationship between the above-described seal portion and the notch portion 40a. There is.
[0024]
[Example]
The inventor performed a detachment test on the inner plug 4 having the above-described configuration. Specifically, four types of inner plugs are prepared as samples, and three of them (Examples 1 to 3) are formed into any one of the above-described notches 40a, and the remaining one (Comparative Example) is formed. The shape was such that the notch 40a was not formed. Regarding the first to third embodiments, the notch portion 40a having a substantially triangular shape is referred to as a first embodiment, the notch portion 40a having a semicircular shape is referred to as a second embodiment, and the notch portion 40a having a plurality of slits is referred to as a third embodiment.
[0025]
Table 1 shows the results of separately evaluating the ease of removing the inner plug 4 (easiness of attachment and detachment) and the difficulty of detaching the inner plug 4 during normal use (mounting stability) for each sample. The evaluation results of the respective characteristics were evaluated in four levels of “excellent”, “good”, “acceptable”, and “impossible”.
[0026]
[Table 1]

[0027]
Regarding the comparative example, it was confirmed that the attachment stability was excellent, but the detachability was extremely poor. On the other hand, in Examples 1 to 3, it was confirmed that the ease of attachment and detachment was improved in comparison with the comparative example. In particular, regarding Example 1, it was confirmed that the balance between the mounting stability and the ease of attachment and detachment was the best.
[0028]
【The invention's effect】
As described above, according to the present invention, it is possible to achieve both mounting stability and ease of attachment / detachment of the inner plug by providing a cutout portion that allows deformation of the base portion in a part of the base portion.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a packaging container. FIG. 2 is an external perspective view of an inner plug. FIG. 3 is a sectional view of a main part showing an attached state of the inner plug. FIG. 4 is a side view showing a modified example of a cutout portion. FIG. 5 is a side view showing another modification of the cutout portion. FIG. 6 is an external perspective view showing a modification of the guide portion.
DESCRIPTION OF SYMBOLS 1 Packaging container 2 Container main body 3 Cap 4 Inner plug 20 Opening 40 Base 40a Notch 41 Nozzle 41a Guide 41b Spout 42 Engagement 42a Projection 42b Claw

Claims (10)

In packaging containers,
A container body in which contents are filled and an opening is provided,
An inner plug that can be attached to and detached from the opening, having a nozzle that protrudes upward, and an inner plug in which a base is integrally formed,
The base portion protrudes downward from the nozzle in a tubular shape, and is in contact with the inner surface of the opening portion,
A packaging container, wherein a cutout portion that allows deformation of the base portion that occurs when the inner plug is removed from the container body is formed in the base portion by cutting out a part of the base portion. . The packaging container according to claim 1, wherein the notch is formed below a seal portion for preventing liquid leakage between the opening and the inner plug. The cutout portion is configured by a cut portion tapered upward from a lower edge portion of the base portion and a slit extending upward from the cut portion. Item 4. A packaging container according to Item 1 or 2. The guide part which shows the direction which removes the inside plug from the container main part is provided in one part of the nozzle which corresponds in position to the notch part, The claim 4 characterized by the above-mentioned. Packaging container. The packaging container according to claim 4, wherein the guide portion is formed by depressing a part of an outer peripheral surface of the nozzle. In an inner plug that is detachable from an opening provided in the container main body and that pours out the contents filled in the container main body,
A nozzle protruding upward,
A base that projects cylindrically downward from the nozzle and that is in contact with the inner surface of the opening,
The inner plug, wherein a cutout portion that allows deformation of the base portion that occurs when the inner plug is removed from the container body is formed in the base portion by cutting out a part of the base portion. The inner plug according to claim 6, wherein the notch is formed below a seal portion that prevents liquid leakage between the opening and the inner plug. The cutout portion is configured by a cut portion tapered upward from a lower edge portion of the base portion and a slit extending upward from the cut portion. Item 8. An inner plug according to item 6 or 7. 9. The apparatus according to claim 6, further comprising: a guide provided at one position of the nozzle corresponding to the notch, and indicating a direction in which the inner plug is removed from the container body. 10. Inside plug. The inner plug according to claim 9, wherein the guide portion is formed by depressing a part of an outer peripheral surface of the nozzle.

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