JP2001097425A - Inner plug structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner plug structure that is suitable for classified collection and that can be removed from a container with a slight force at a finger tip without using any jig. SOLUTION: An inner plug 10 is provided with an annular circumferential wall 18 fitted to an outer circumference of an opening 14 of a container 12. The circumferential wall 18 is formed, at its inner circumference, with a protuberance 26 removably engaged with an annular ridge 22 formed at an outer circumference of the opening 14. The protuberance 26 is engaged with the annular ridge 22 to cause a fitted state of the inner plug 10 to be held and in turn from this state, the protuberance 26 rides over the annular ridge 22 to cause its engaged state to be released, thereby the inner plug 10 is separated from the container 12. The annular circumferential wall 18 is formed with a cutout 30 and an upper edge of this cutout 30 acts as a ridge 30a for adding a pushing-up force to the lid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner plug fitted to the mouth of a container for storing a liquid such as a lotion, and more particularly to an inner plug suitable for sorted collection which can be easily separated from the container when the container is discarded. Regarding the structure.

[0002]

2. Description of the Related Art A container for accommodating a liquid such as a lotion is hermetically closed by a detachable cap at its mouth, and when used, the cap is removed to take out the contained liquid from the mouth. At this time, in order to adjust the amount of liquid to be taken out, an inner stopper is attached to the container mouth, and an appropriate amount of liquid is taken out through a small hole formed in the inner stopper. The inner stopper is firmly fitted to the mouth so that it does not easily come off the mouth even if the container is turned upside down and shaken. For example, as disclosed in Japanese Patent Application Laid-Open No. 10-230596, a projection is formed on the inner periphery of the inner plug, and this projection is engaged with an annular ridge formed on the outer periphery of the mouth of the container. ing. At this time, since the fitting portion of the inner plug is required to have a liquid-tight function, the projection is closely engaged with the annular ridge.

[0003] Generally, the container and the inner plug are formed of different materials. For example, while the container is formed of a hard material such as glass, the inner plug is formed of a relatively soft synthetic resin material or the like because the projection needs to be deformed so that the projection can get over the annular projection.
As described above, since the material of the container and the inner plug are different from each other, when the container is emptied and is to be discarded, the container and the inner plug need to be separated and discarded separately.

[0004]

However, in such a conventional inner plug structure, when the inner plug is to be separated from the container for separation and collection, a projection on the inner periphery of the inner stopper and an annular ridge on the outer periphery of the mouth are required. However, since the inner plug is fitted closely to the mouth, a large force is required to remove the inner plug. It is extremely difficult to forcibly remove this with a fingertip, and in some cases, the nail may be broken.

[0005] For this reason, a jig for removing the inner plug, for example, in the above-mentioned publication, the inner plug is removed by using a stopper, but in this case, it is necessary to prepare a jig for each separate collection. In addition, there is a problem that the jig is locked at a predetermined position of the inner plug and removed, and the sorting operation is complicated.

Accordingly, the present invention has been made in view of such a conventional problem, and provides an inner plug structure which can be easily separated from a container with a small force of a fingertip without using a jig and which can be separated and collected. The purpose is to:

[0007]

In order to achieve the above object, an inner plug structure according to the present invention has an annular peripheral wall fitted to the outer periphery of the mouth of a container. At the periphery, a projection is formed which is detachably engaged with an annular ridge formed on the outer periphery of the mouth, and the inner plug is fitted by the engagement of the projection with the annular ridge. On the other hand, in the inner plug structure in which the inner plug can be separated from the container by being disengaged from the fitted state by the protrusion projecting over the annular ridge from the fitted state, in the inner plug structure, It is characterized in that a shelf for applying a lifting force is provided on the side surface, and the protrusion at a portion corresponding to the position where the shelf is formed is cut off.

[0008] According to this configuration, by pushing up the shelf of the peripheral wall, the inner plug is lifted upward at the portion where the shelf is formed, and at this time, the portion corresponding to the position where the shelf is formed is the protrusion. Is cut off, the periphery of the shelf can be easily shifted upward. When the periphery of the shelf is lifted up in this way, the surrounding projections easily get over the annular ridge and the engagement between the two is released. Therefore, by pushing up the shelf with the abdomen of the thumb or the like, the inner plug can be easily separated from the mouth without using a jig or the like, and sorting and collecting when the container is discarded becomes easy.

Further, if the shelf is formed at the upper edge of the notch formed in the peripheral wall, the shelf can be easily formed. Further, since the peripheral wall portion is partially cut by the notch portion, the peripheral wall portion is easily deformed when the pushing-up force is applied, so that the protrusion easily climbs over the annular ridge. It becomes easier to separate the inner plug.

[0010]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. 1 to 4 show an embodiment of the inner plug structure according to the present invention. FIG.
2 is a central longitudinal sectional view showing a fitted state of the inner plug, FIG. 2 is a perspective view showing the fitted state, FIG. 3 is a perspective view of the inner plug, and FIG. 4 is a bottom view of the inner plug. is there.

The basic structure of the inner plug structure of the present invention includes an annular peripheral wall portion 18 fitted around the outer periphery of the mouth 14 of the container 12, and is formed on the inner periphery of the peripheral wall 18 and on the outer periphery of the mouth 14. The projection 26 is detachably engaged with the formed annular ridge 22, and the fitting state of the inner plug 10 is maintained by engaging the projection 26 with the annular ridge 22. The inner plug 10 can be separated from the container 12 by releasing the engagement of the projection 26 over the annular ridge 22 from the fitted state, and the notch 30 is formed on the outer surface of the peripheral wall 18. And the upper edge of the notch 30 is formed by the shelf 30 of the present invention.
a.

That is, as shown in FIGS. 1 and 2, the inner plug 10 of this embodiment is fitted into the mouth 14 of a glass bottle 12 as a container, and the outlet of the mouth 14 is narrowed down.
When is turned upside down, the amount of the liquid such as the lotion (not shown) stored therein is reduced from the mouth portion 14 so that an appropriate amount is taken out. That is, the inner plug 10 is made of a synthetic resin including a closing plate 16 for closing the end of the mouth portion 14 and a peripheral wall portion 18 fitted on the outer periphery of the mouth portion 14. Small hole 2 to squeeze mouth 14
0 is formed. The shape of the opening of the small hole 20 is not limited to a circular shape, and the opening area thereof can be arbitrarily set in order to obtain a flow amount of the liquid according to the purpose. Also,
The outside of the inner plug 10 is further covered with a cap (not shown).

The mouth 14 is formed by reducing the diameter of the upper end of the glass bottle 12, and an annular ridge 22 for engaging the inner plug 10 is formed on the outer periphery of the tip of the mouth 14. A screw portion 24 for screwing the cap is formed on the outer periphery of the base end of the portion 14. On the other hand, a projection 26 engaged with the annular ridge 22 is formed on the inner periphery of the peripheral wall portion 18 of the inner plug 10, and when the inner plug 10 is fitted to the mouth portion 14, as shown in FIG. The portions 26 are engaged with each other over the annular projection 22. The annular projection 22 and the projection 26
Is fitted, the fitted state of the inner plug 10 is maintained. In the present embodiment, an inner wall 28 that is closely fitted to the inner periphery of the mouth 14 is formed concentrically with the peripheral wall 18 on the inner surface of the closing plate 16 of the inner plug 10.

When the inner stopper 10 is fitted to the mouth 14 of the glass bottle 12, the inner wall 28 is closely fitted to the inner periphery of the mouth 14, and the inner periphery of the peripheral wall 18 is formed by the annular ridge 22. When the glass bottle 12 is turned upside down and liquid is taken out from the small hole 20, the mouth portion 14 is closed.
The liquid is prevented from leaking from the fitting portion between the and the inner plug 10.

In this embodiment, a notch 30 is formed in the peripheral wall 18 of the inner plug 10, and the upper edge of the notch 30 is used as a shelf 30a. As shown in FIGS. 3 and 4, the cutout portion 30 is formed by cutting the upper portion of the peripheral wall portion 18 upward in a U-shape from the lower end portion to the vicinity of the joint with the closing plate 16. The width L in the circumferential direction of the cutout portion 30 is set to such a size that the abdomen of a human finger (for example, thumb) F can be hooked as shown by a virtual line in FIG. The projection 26 on the inner side of the peripheral wall 18 is the notch 3
It has been resected at 0.

A finger F is hooked on the cutout portion 30,
When the shelf portion 30a is pushed up from below, this portion is easily lifted because the protruding portion 26 is cut off, and the pushing up force is transmitted to the closing plate 16, whereby the entire inner plug 10 is lifted upward. Accordingly, the peripheral wall portion 18 is also lifted upward. Since the peripheral wall portion 18 is partially cut by the notch portion 30, it is easily deformed. When the push-up force reaches a certain level, the protrusion 26 inside the peripheral wall 18 gets over the annular ridge 22. The engagement between the projection 26 and the annular ridge 22 is released, and the inner plug 10 is removed from the mouth 14.
Since the inner plug 10 has a shelf 30a that can be easily pushed up without the protrusion 26, the inner plug 10 can be easily pulled out of the mouth 14 with human fingers without using a jig or the like as in the related art. Can be separated. When the glass bottle 12 is used up and is discarded, the inner plug 10 made of synthetic resin can be easily separated from the glass bottle 12 and separated collection becomes easy. In particular, if the circumferential width L of the peripheral wall portion 18 is set longer, the cutting length of the peripheral wall portion 18 becomes longer, the peripheral wall portion 18 is easily deformed, and the work of removing the inner plug 10 can be performed more easily. it can.

In the above embodiment, the notch 30 is formed at one location on the peripheral wall 18 of the inner plug 10, but the notch 30 is not limited to this, and is provided at a plurality of locations on the peripheral wall 18. You may be. FIG. 5 to FIG.
This is an embodiment when a plurality of 0s are provided. FIG. 5 shows a case where the notch portions 30 are provided opposite each other with the mouth portion 14 interposed therebetween. FIGS. 6 and 7 show a case where the notches 30 are provided at four locations at equal intervals along the circumferential direction of the peripheral wall 18. As the number of cut-out portions 30 increases, the peripheral wall portion 18 is easily deformed, and the work of removing the inner plug 10 is simplified. In addition, the cutout portion 30 may be formed by being cut out in a U shape as shown in FIGS. 1 to 7, or may be formed by being cut out in an arc shape as shown in FIG. 8. .

In this embodiment, the shelf 30a of the present invention is provided at the upper edge of the notch 30 formed in the peripheral wall portion 18 of the inner plug 10, but the present invention is not limited to this.
For example, a protrusion is formed on the outer surface of the peripheral wall of the inner plug to form a shelf, or an outer surface of the inner wall of the inner plug is cut out like a window to form an opening, and the opening is formed. The edge may be a shelf.

[0019]

As described above, in the inner plug structure according to the present invention, when the shelf formed on the peripheral wall of the inner plug is pushed upward, the portion corresponding to the position where the shelf is formed. , The protrusions are cut off, so that the protrusions around the shelf can pass over the annular protrusions smoothly as the shelf is lifted. Therefore, by pushing up the shelf with the belly of the thumb, the inner plug can be easily separated from the mouth without using a jig or the like, and sorting and collecting when the container is discarded is greatly simplified. .

In the inner plug structure according to a second aspect of the present invention, the upper edge of the notch formed on the outer surface of the peripheral wall is a shelf, so that a part of the peripheral wall is formed. Simply by cutting, the shelf can be easily formed and the protrusion can be cut. Further, since the peripheral wall portion is divided in the circumferential direction by the formation of the notch portion, the peripheral wall portion is easily deformed when a pushing force is applied to the shelf portion, and the protrusion on the inner peripheral surface of the peripheral wall portion is easily formed. It becomes possible to get over the annular ridge, and the work of separating the inner plug becomes easy.

[Brief description of the drawings]

FIG. 1 is a central longitudinal sectional view showing a fitted state of an inner plug according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an embodiment of the present invention in a state where an inner plug is fitted.

FIG. 3 is a perspective view of an inner plug showing one embodiment of the present invention.

FIG. 4 is a bottom view of the inner plug showing one embodiment of the present invention.

FIG. 5 is a bottom view of the inner plug showing another embodiment of the present invention.

FIG. 6 is a perspective view of an inner plug showing another embodiment of the present invention.

FIG. 7 is a bottom view of an inner plug showing another embodiment of the present invention.

FIG. 8 is a perspective view of another embodiment of the present invention in a state where an inner plug is fitted.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Inner stopper 12 Glass bottle (container) 14 Mouth 18 Peripheral wall part 20 Small hole 22 Annular ridge 26 Projection part 28 Inner wall surface 30 Notch part 30a Shelf part

Claims (2)

[Claims] 1. A projection having an annular peripheral wall fitted on the outer periphery of a mouth of a container, the projection being removably engaged with an annular ridge formed on the outer periphery of the mouth on the inner periphery of the peripheral wall. A portion is formed, and the fitting state of the inner plug is maintained by the engagement of the projection with the annular ridge, while the engagement portion engages with the projection over the annular ridge from the fitted state. By being canceled,
In the inner plug structure in which the inner plug can be separated from the container, a shelf for applying a pushing force is formed on the outer surface of the peripheral wall, and the protrusion at a portion corresponding to a position where the shelf is formed is provided. Inner plug structure characterized by having its part removed. 2. The inner plug structure according to claim 1, wherein said shelf is provided at an upper edge of a notch formed in said peripheral wall.