JP2000062826A - Inner plug of fluid container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner plug of a fluid container in which a size of the middle plug itself can be made small to such a degree as one not to enable a finger tip to be inserted in response to a size of the content or an entire size of the container and then an opening required for extracting the content can be easily formed even if such a small inner plug is provided. SOLUTION: There is provided an inner plug 2 made of synthetic resin fitted to an opening 11 of a container 1 for fluid flowing down by its own weight. A bottom wall 21 of the middle plug 2 is comprised of a thin-walled section 23 for a non-annular opening sectioned by a non-thin walled section 22, and a recovering preventing protrusion 24 at a position near an inner diameter side of the thin-walled portion 23 and opposing against the non-thin wall portion 22 toward an outward direction. In addition, the inner plug 2 is comprised of a flange section 26 engaged with an upper end of the opening 11 of the container 1, a barrel 27 extending along an inner circumferential surface of the opening 11 of the container 1, and a bottom wall 21 cooperatively connected to its lower end and the protrusion 24 is positioned in a cavity (a) formed by the barrel 27 and the bottom section 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin inner plug used by being attached to an opening of a container for containing a fluid such as liquid, powder or small particles.

[0002]

2. Description of the Related Art A conventional synthetic resin inner stopper for a fluid container of this type is a deep dish type resin molded product which is press-fitted into an opening 11 of a container 1 as shown in FIGS. And a flange portion 26 that engages above the opening 11 of the container 1 at the upper end,
The container 1 is provided with a body portion 27 extending along the inner peripheral surface of the opening portion 11 and a bottom wall 21 connected to the lower end of the body portion 27. The bottom wall 21 has an annular thin wall portion 23 for opening, and the thin wall portion 23 for opening. The structure is composed of a protrusion 24 protruding upward from a position near the inside of the portion 23, and a finger-hanging ring 25 formed in the upper end of the protrusion 24 in the horizontal direction.

[0003]

In the conventional fluid container inner stopper 20 having such a structure, the outer lid 3 is removed before use, and the finger stopper ring 25 of the inner stopper 20 is removed.
By inserting a fingertip into the ring, picking up the ring 25 and pulling it upward, the ring-shaped thin portion 23 for opening is broken, and the bottom wall 21 is removed together with the ring 25 to open. By doing so, the circular hole for taking out the contained fluid in the container is formed in the bottom wall 21.

However, in the conventional inside plug 20 having such a structure, if the inside diameter of the inside plug 20 is small, the finger-holding ring 25 is inevitably small, and therefore the fingers are small. Is difficult to insert, it is difficult to pinch and open the ring, and even if the inside plug 20 has a reasonably large diameter, the finger-holding ring 25 is small, or a finger is inserted. Even in the case of a ring having a large size, there is a problem that it is often difficult to pinch the ring to pull out and open it.

In this way, when the opening of the container 1 is small, as described above, the finger-holding ring 25 is naturally small, and it is difficult to insert a finger, and it is difficult to open the finger by grasping the ring. In some cases, the opening itself of the container 1 must be made larger in diameter than the size necessary for extracting the contents.

On the other hand, the inner stopper itself serves as a stopper in the unopened state of the liquid or the like contained in the container, so that it is press-fitted into the container so as to maintain a completely sealed state. It is designed so that it cannot be extracted easily.

Therefore, the present invention has an object to solve the problem that the conventional inner stopper for a fluid container has, and in particular, the size of the inner stopper itself, the contents and the container. It can be made so small that it is difficult to insert the fingertip according to the overall size, and even with such a small inside plug, the opening necessary for extracting the contents can be easily formed. It is intended to provide a stopper that can be made.

[0008]

The structure of the present invention, which was devised to achieve the above object, will be described with reference to the reference numerals used in the embodiments. The first structure of the present invention is for a fluid flowing down by its own weight. A synthetic resin inner plug 2 fitted into an opening 11 of a container 1, wherein a bottom wall 21 of the inner plug 2 has a non-annular opening thin wall portion 23 interrupted by a non-thin wall portion 22,
The structure is provided with a restoration preventing projection 24 that projects outward from a position facing the non-thin portion 22 in the vicinity of the inner diameter side of the thin portion 23.

The second structure of the present invention is an inner plug 2 made of synthetic resin, which is fitted into the opening 11 of the fluid container 1 flowing down by its own weight, and which is attached to the bottom wall 21 of the inner plug 2. , The non-annular opening thin wall portion 23 interrupted by the non-thin wall portion 22
And the non-thin portion 2 at a position near the inner diameter side of the thin portion 23.
2 is provided with a restoration preventing projection 24 that projects outward from a location facing 2 and the inside plug 2 engages with a flange portion 26 that engages with an upper end of the opening portion 11 of the container 1, and an opening of the container 1. A trunk portion 27 extending along the inner peripheral surface of the portion 11 and the bottom wall 21 connected to the lower end of the trunk portion 27 are provided, and the protrusion 24 is provided in the cavity a formed by the trunk portion 27 and the bottom portion 21. It is configured to be located.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In carrying out the present invention,
In the vicinity of the protrusion 24, a small concave portion 25 for guiding or facilitating the positioning of the tip of an opening tool having a thin tip such as a pen tip, a sharp tip, or a toothpick, is formed. Alternatively, it can be implemented by forming an annular rib 28 protruding outward on the upper surface of the flange portion 26 of the inner plug 2.
The resin material used is not particularly limited. Further, the content to be stored in the container is not limited to liquid, but may be powder or small particles, as long as it flows out from the opening formed in the bottom wall of the inside plug described later.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 in the drawings are views showing a first embodiment of the present invention, wherein FIG. 1 shows a vertical cross-sectional shape of the entire container, and FIG. 3 is a perspective view of a vertical cross section of the inner plug.
FIG. 5 is a vertical cross-sectional shape of the inner plug, and FIG. 5 is a vertical cross-sectional view of the container with the inner plug open.

The container shown in this embodiment is a blow-molded cylindrical container 1 made of synthetic resin, in which an inner stopper 2 is fitted into an upper end opening 11 thereof, and an outer lid having a conical cylindrical shape on the outer periphery thereof. 3 is screw-fitted, and a small cap 4 is further provided at the tip opening of the outer lid 3.

Further, as shown in the drawing, the inner stopper 2 shown in the embodiment is of a deep dish shape, and has a flange portion 26 which engages with an upper end of the opening portion 11 of the container 1 and an opening of the container 1. It is composed of a body portion 27 that adheres closely to the inner peripheral surface of the portion 11 and a bottom wall 21 that is connected to the lower end of the body portion 27, and the bottom wall 21 has a substantially planar view C interrupted by the non-thin portion 22. A thin-walled portion 23 that is easy to break for a V-shaped opening is formed, and protrudes outward (upward in the figure) at a position near the inner diameter side of the thin-walled portion 23 and facing the non-thin-walled portion 22. A rod-shaped restoration preventing projection 24 is formed so as to be present in the cavity a formed by the body portion 27 and the bottom portion 21.

In addition, a small recess 25 for facilitating guiding or positioning of the tip of an opening tool having a thin tip is formed in the portion of the projection 24 on the side of the non-thin portion 22 side. An annular rib 28 projecting outward is formed on the upper surface of the flange portion 26 of the inner plug 2, and these are entirely formed integrally with a synthetic resin material.

In order to open the inner plug 2 having such a shape, the outer lid 3 is removed and, as shown in FIG. 4, for example, a pen tip, a sharp tip, a toothpick or a chopstick tip. With the opening tool b having such a thin tip, the protrusion 24
By pressing the small lateral recess 25 inward,
A thin portion 23 in which the non-thin portion 22 is left to facilitate breakage
Is broken into a substantially C shape, and the broken bottom wall portion 21a is pushed into the container by using the non-thin portion 22 as a connecting fulcrum, as shown by an imaginary line in FIG. At this time, due to the force of breaking the thin portion 23, the upper ends of the protrusions 24 are naturally pushed down to below the bottom wall 21.

In this way, once the bottom wall portion 21a is pushed into the container, even if the pushing is stopped, as shown in FIG. 5, the upper ends of the projections 24 pushed into the container have the remaining bottom wall. The bottom wall portion 21a is brought into contact with the lower surface of the base plate 21 to prevent the bottom wall portion 21a from being restored, and the open state is maintained.

Thus, the bottom wall 21 can be easily opened by pushing it toward the inside of the container 1.

The tip guide recess 25 of the opening tool b is not always necessary. However, it is effective when the inside plug 2 is so small that it is difficult to insert the fingertip. In particular, when the inner plug 2 is large enough to easily press the fingertip, the recess 2
5 may not be provided.

Further, the annular rib 28 formed on the upper surface of the flange portion 26 of the inner plug 2 so as to project toward the outside serves to perform packing with the outer lid 3. Therefore, there is an advantage that packing between the two can be omitted.

FIG. 6 shows a second embodiment of the inner plug 2. The inner plug 2 has a projection 24 having an arcuate cross section in place of the rod-like projection 24 shown in the first embodiment. The groove-shaped arc surface 24a on the inner surface side is directed toward the center side of the bottom wall 21, and this groove-shaped arc surface 24a can be used as a tip guide groove of an arbitrary opening tool b.

The embodiment shown in FIGS. 7 and 8 shows another embodiment of the inner stopper 2, which is formed in a dish shape with a downward opening and has an opening 11 of the container 1. 2 shows an embodiment in which the outer circumference of the upper end is fitted.

Thus, the inside plug 2 of this embodiment has a bottom wall 21 that closes the upper end of the opening 11 of the container 1 and a body portion 27 that hangs along the outer periphery of the opening 11 of the container 1. Prepare, bottom wall 2
As in the case of the first embodiment, a thin portion 23 formed in a C-shape with a part not thin is left, and a restoration protruding upward toward the thin portion 23. A projection 24 for prevention is formed, and the projection 24 is formed on the outer lid 3
It is located inside the hollow portion c formed on the inner surface of and is protected by the outer lid 3.

Also in this case, by pushing the bottom wall 21 into the container from the outside, the thin portion 23 is broken and broken to open. At this time, as shown in FIG. 8, the protrusion 24 contacts the lower surface of the residual bottom wall 21 and maintains the open state. In the case of this embodiment, the opening action is without the use of instruments,
It can be easily understood that the operation can be performed with the fingertip.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures shown in the drawings of these embodiments.
The thin portion 23 shown as a C-shape can be changed to an appropriate shape such as an ellipse, an ellipse, a weight, or the restoration preventing projection 2
By changing the shape or length of 4 or providing a step portion on the outer peripheral side of the restoration preventing projection 24, that is, the engagement side with the bottom wall 21 or forming a sawtooth shape, these step portions or sawtooth portions are formed. You may make it engage with the bottom wall 21. Further, it is possible to make appropriate changes such as not having the annular rib 28. That is, it can be carried out by appropriately modifying it within a range that has the above-mentioned constitutional requirements of the present invention, achieves the object of the present invention, and has the following effects.

[0025]

As is apparent from the above description, the present invention has a structure of an inner plug made of synthetic resin that fits into an opening of a fluid container, and is interrupted by a non-thin portion on a bottom wall. Since it has a non-annular opening thin-walled portion, and a restoration preventing projection protruding outward from a location facing the non-thin-walled portion in the vicinity of the inner diameter side of the thin-walled portion,
Even if the opening of the container is small and it is difficult to insert a finger, it is not necessary to make the opening of the container unnecessarily large. It can be formed in any size according to the size of the entire container, and if necessary, it can be made as small as it is difficult to put in a fingertip. Therefore, it is possible to expect a remarkable effect that the opening necessary for extracting the contents can be easily formed.

A second structure of the present invention has the above structure, and the inner plug extends along the flange portion that engages with the upper end of the opening of the container and the inner peripheral surface of the opening of the container. The body is provided with a bottom wall connected to the lower end of the body, and the projection is located in a cavity a formed by the body and the bottom. There is no limitation on the shape or structure of the cap, that is, the outer lid, and the effect that any structure can be used as long as it can be directly attached to the opening of the container to be used is also provided. Can be expected.

[Brief description of drawings]

FIG. 1 is a central vertical sectional front view of a main part showing a first embodiment.

FIG. 2 is a perspective view showing an inside plug of the first embodiment.

FIG. 3 is a vertical sectional perspective view of FIG.

4 is a front view in vertical section of FIG.

FIG. 5 is a central longitudinal front view showing an opened state of the inner plug of FIG. 1.

FIG. 6 is a perspective view showing an inner plug of the second embodiment.

FIG. 7 is a front view of a central longitudinal section of a main part showing a third embodiment.

FIG. 8 is a central vertical sectional front view showing an opened state of the inner plug of FIG. 7.

FIG. 9 is a central longitudinal front view of a main part showing a conventional example.

FIG. 10 is a central longitudinal perspective view showing a conventional inner plug.

[Explanation of symbols]

1 container 11 Container opening 2 inside plug 21 bottom wall 22 Non-thin part 23 Thin part 24 protrusions 3 outer lid 4 cap

Claims (4)

[Claims] 1. An inner plug (2) made of synthetic resin, which fits into an opening (11) of a fluid container (1) flowing down by its own weight,
In the bottom wall (21) of the inner plug (2), the non-annular opening thin wall portion (23) interrupted by the non-thin wall portion (22), and at the position near the inner diameter side of the thin wall portion (23). An inner plug of a fluid container having a non-thin portion (22) and a restoration preventing protrusion (24) protruding outward from a position facing the non-thin portion (22). 2. An inner plug (2) made of synthetic resin, which fits into an opening (11) of a fluid container (1) flowing down by its own weight,
In the bottom wall (21) of the inner plug (2), the non-annular opening thin wall portion (23) interrupted by the non-thin wall portion (22), and at the position near the inner diameter side of the thin wall portion (23). A non-thin portion (22) and a restoration preventing protrusion (24) protruding outward from a location facing the non-thin portion (22), the inner plug (2) is the upper end of the opening (11) of the container (1). A flange portion (26) engaging with, a body portion (27) along the inner peripheral surface of the opening (11) of the container (1), and the bottom wall (21) connected to the lower end thereof, Moreover, the protrusion (24) is provided with the body portion (27) and the bottom portion (21).
The inner stopper of the fluid container located in the cavity (a) formed by 3. The inner stopper of the fluid container according to claim 1, wherein an opening tool tip guide recess (25) is formed in the vicinity of the protrusion (24). 4. The fluid container according to claim 1, wherein the inner plug (2) is provided with a flange portion (26) having an annular rib (28) protruding toward an upper surface. Inside stopper.