JP2001180725A - Inner stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a synthetic resin inner stopper prevented from being drawn out, by fitting a peripheral wall 8 over an outer periphery of a neck 5 of a container body 2 and causing an engaging protrusion 9 provided to protrude on an inner peripheral surface of the wall 8 to come beyond a locking protrusion 6 provided along the outer periphery 5 of the neck 5 to be engaged wherein the inner plug is tightly fixed to the container body during use, it can be easily removed when disposing of for classification disposal, and the plug is simple in structure and inexpensive to manufacture. SOLUTION: The engaging protrusion 9 is formed as a non-annular form with a part notched, and a through hole 16 which passes longitudinally through a peripheral wall 8a at the part where the engaging protrusion is not formed is bored. An internal wall below the through hole is constructed as an engaging piece 18 which can be elastically and swingably deformed in inward and outward directions wherein a protrusion 17 on an internal face is brought beyond the locking protrusion 6 to be engaged. In addition, a fitting plate 20 which is tightly fitted into the through hole 16 for locking the engaging piece 18 is provided so that it can be drawn out via an elastic strip 21 with an end coupled with the peripheral wall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an inner plug.

[0002]

2. Description of the Related Art As an inner plug to be attached to a container body, a peripheral wall is fitted to the outer periphery of the mouth and neck portion and attached to the container body, and an engagement ridge projecting from the inner periphery of the peripheral wall is provided around the outer periphery of the mouth and neck portion. There is one in which the engaging ridge is over-engaged to prevent slipping out. Many of these do not consider removal once they are attached to the container body.Therefore, many of these are equipped with a spout, and those with a removable cap attached to the container body or the inner plug itself are often used. Many.

As a specific example, a top wall extending from the upper edge of the peripheral wall covers the upper end opening of the mouth and neck of the container body, and a pouring cylinder is erected on the top wall portion. Forming a cutout surrounded by the annular thin cutout, pulling up the pull ring at the tip of the bar-like projection erected on the cutout, breaking the thin cutout, removing the cutout, and opening the spout. Such a configuration is mentioned.

[0004]

In recent years, the recycling of synthetic resins has been progressing, and even in the case of disposal, it has been practiced to separate and dispose of the resin. Is desired to be removed from the container and disposed of. On the other hand, it is naturally required that this kind of inner plug is firmly fitted to the container body during use and cannot be easily removed.

The present invention has been made in view of the above points, and can be firmly fixed to a container at the time of use, can be easily removed and discarded at the time of disposal, and has a simple structure and can be synthesized. The present invention proposes an inner plug that has various advantages such as being easy to manufacture since resin can be integrally molded.

[0006]

In order to solve the above-mentioned problems, the inner plug according to the first aspect of the present invention has a peripheral wall 8 fitted to the outer periphery of the mouth and neck portion 5 of the container body 2 and protrudes from the inner peripheral surface of the peripheral wall 8. The engaging ridge 9 is a synthetic resin inner plug in which the engaging ridge 9 is pushed over the engaging ridge 6 provided around the outer periphery of the mouth and neck portion 5 to prevent the engaging ridge 9 from slipping out. The through-hole 16 penetrating through the peripheral wall 8a of the engaging ridge non-forming portion is formed, and the inner wall portion of the lower portion of the through-hole can be elastically deformed inward and outward, and The projection 17 on the inner surface is formed as an engagement piece 18 that is engaged with the engagement projection 6 and is engaged with the engagement projection 6. A fitting plate 20 that fits tightly into the through hole 16 and locks the engagement piece 17 is provided on the peripheral wall 8. The inner plug is characterized in that it is connected to the elastic band 21 extending from the outer surface in such a manner that it can be pulled out from the through hole.

Further, the inner plug according to the second aspect of the present invention,
The inner plug (18) is formed as an inner plug according to claim 1, which is pressed and deformed inward by the fitting plate (20).

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

The inner plug 1 of the present invention is used by being fitted to and fixed to a container body 2, and is detached from the container body 2 and discarded separately at the time of disposal.

The container body 2 to be mounted can be made of synthetic resin, glass, or the like, and can be used with a locking ridge for locking the inner plug around the mouth and neck. The container body 2 in the illustrated example has a mouth and neck 5 erected from a body 3 via a shoulder 4, and a locking ridge 6 is provided around the outer periphery of the mouth and neck 5. A flange 7 protrudes from the outer periphery of the mouth and neck portion below the locking ridge 6.

The inner plug 1 according to the present invention is formed of a synthetic resin, and a peripheral wall 8 is fitted around the outer periphery of the neck 5 of the container body and protrudes from the inner peripheral surface of the peripheral wall 8 as shown in FIG. A form in which the engaging ridge 9 is moved over and engaged with the locking ridge 6 provided around the outer periphery of the mouth and neck portion 5 to prevent it from slipping out. Accordingly, there is a type having a spout, or a type having a cutting portion at a portion to be the spout, and a cap which is detachably attached to the container body or the inner plug itself.

In the illustrated example, a top wall 10 extending from an upper edge of the peripheral wall 8 closes an upper end opening of the mouth and neck of the container body, and a pouring cylinder 11 whose upper end spreads in a trumpet shape at the center of the upper surface of the top wall 10. ing. Further, a cut-out portion 10a surrounded by a thin-walled break portion 12 is provided on a top wall 10 in the pouring cylinder 11, and a pull ring 14 is horizontally extended from a tip of a bar-shaped projection 13 erected from the upper surface of the cut-out portion 10a. By pulling up the pull ring 14,
The structure is such that the cutout 10a is removed and the spout is opened. In addition, a seal cylinder 15 is vertically provided from the peripheral edge of the back surface of the top wall 10 to closely fit the inner periphery of the mouth and neck portion 5 of the container body to prevent leakage of the liquid therefrom.

In the present invention, the engagement ridge 9 is formed in a non-annular shape with a part thereof being lost, and the peripheral wall 8a of the portion where the engagement ridge is not formed.
A through-hole 16 penetrating through the hole is formed, and the inner wall of the lower part of the through-hole can be elastically deformed inward and outward and the projection 17 on the inner surface is engaged with the locking ridge 6. Engagement piece 18
It is constituted as.

In the present invention, the length of the missing non-formed portion of the engaging ridge 9 can be appropriately selected.
As shown in the figure, the rear part forming a range of 90 degrees in the central angle is formed in a missing arc shape.

Further, as shown in FIG. 7, the through hole 16 of the present embodiment has a rectangular cross section having an upper portion formed to be wider in the front-rear direction via an upward step 19 formed on the central side surface.
The fitting plate described later is configured to be easily inserted and to be more easily pressed inward by the fitting plate. In addition, the engagement piece 18 has a through hole
16 is formed by vertically forming a parallel cut groove in the inner wall portion. The inner surface is substantially on the same circumferential surface as the inner surface of the peripheral wall 8, and the peripheral wall is located closer to the upper edge than the upper edge of the upward step portion 19. 8 has a length reaching the lower edge.

In use, a fitting plate 20 is provided for securely fixing the engaging piece 18 so as not to swing, and detaching the inner plug 1 from the container body 2 after use.
The fitting plate 20 is tightly fitted in the through hole 16 to lock the engaging piece 18, and is integrally connected to the elastic band 21 extending from the outer surface of the peripheral wall 8a so as to be able to come out of the through hole 16. are doing. The fitting plate 20 may be in a form that fits at least densely (for example, to the extent that it does not move easily) into the through hole 16.
Are fitted so that they are slightly pressed and deformed inwardly, it is possible to more reliably prevent slipping out.

The fitting plate 20 in the present embodiment has a rectangular plate shape, and has an upper portion formed to be wider in the front-rear direction like a through hole via a downward step 22 formed on the inner surface. Then, the engagement piece 18
Are pressed and deformed inward. Specifically, the inner and outer widths of the fitting plate 20 below the downward step portion 22 are configured to be slightly larger than the front and rear width of the through hole 16 below the upward step portion 19, and the engagement piece 18 is slightly pressed when pushed. It is configured to shift to the center side. Further, a finger-hanging protruding piece 23 projects outward from the upper end.

The elastic band 21 in this embodiment is formed as a pair of parallel belts having one end inside connected to both upper ends of the fitting plate 20 and the other end connected to the lower rear end of the outer periphery of the peripheral wall 8. The fitting plates 20 are each configured to have a sufficient length for removal. In the drawing, reference numeral 24 denotes a cap.

For example, as shown in FIG. 3, the inner plug 1 constructed as described above is made of synthetic resin in a state in which the elastic band 21 projects horizontally outward and the fitting plate 20 stands upright. They can be formed integrally. After the fitting plate 20 is fitted into the through hole 16 from this state, the engaging ridges 9 and the projections 17 are driven from above the container body 2 so as to ride over the locking ridges 6 and engage. Alternatively, the fitting plate 20 may be fitted after driving from above the container body 2 from the state of FIG.

At the time of disposal after use, when the fitting plate 20 is pulled up, the fitting plate 20 first moves above the through hole 16 as shown in FIG. 5, and then as shown in FIG. 6, the fitting plate 20 is removed. The engaging piece 18 is easily opened outward, and then the finger hooking projection 23 is pulled up, so that the engagement projection 18 is easily removed from the container body 2 due to the presence of the non-formed portion of the engaging projection 9.

[0021]

As described above, the inner plug according to the present invention has the above-mentioned structure, so that it is firmly fixed once it is fitted to the container body, and there is no inconvenience such as accidental detachment. In this case, the fitting plate can be easily removed from the container body by a very simple operation of pulling out and removing the fitting plate and then pulling it up as it is, so that the separation process can be easily performed.

When the engagement piece 18 is pressed and deformed inward by the fitting plate 20, the engagement of the engagement piece 18 with the locking ridge 6 becomes more reliable. It is possible to more reliably prevent accidental detachment during use.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention, with an inner plug attached to a container body.

FIG. 2 is a bottom view of the inner plug of the embodiment.

FIG. 3 is a longitudinal sectional view of the inner plug of the embodiment.

FIG. 4 is a plan view of the inner plug of the embodiment.

FIG. 5 is an explanatory view when the inner plug of the embodiment is removed.

FIG. 6 is an explanatory view when the inner plug of the embodiment is removed.

FIG. 7 is an enlarged sectional view of a main part when removing the inner plug of the embodiment.

[Explanation of symbols]

2 ... container body, 5 ... mouth and neck, 6 ... locking ridge, 8 ... peripheral wall, 8a
... the peripheral wall of the portion where the engaging ridge is not formed, 9 ... engaging ridge, 16 ... through hole, 17 ... projecting portion, 18 ... engaging piece, 20 ... fitting plate, 21 ... elastic band

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E084 AA04 AA12 BA03 CA01 CB01 CB02 CB04 CC03 DA01 DB01 DB09 DB13 DB14 DC03 EA04 EB01 EB02 EB04 EC03 FA09 FC07 FC08 GA08 GB08 GB12 GB13 GB17 KA15 LA03 LA07 LB02 LD01

Claims (2)

[Claims] A peripheral wall (8) is fitted around the outer periphery of the mouth and neck portion (5) of the container body (2), and an engaging ridge (9) projected on the inner peripheral surface of the peripheral wall (8) is engaged with a locking ridge (6) provided around the outer periphery of the mouth and neck portion (5). The stopper is a synthetic resin inner plug which is prevented from slipping out by engaging over, and the engaging ridge 9 is formed in a non-annular shape with a part missing, and penetrates the peripheral wall 8a of the portion where the engaging ridge is not formed. An engaging piece that has a through hole 16 formed therein, is capable of elastically deforming the inner wall portion of the lower portion of the through hole inward and outward, and is engaged with the protrusion 17 on the inner surface by riding over the locking ridge 6. The elastic plate 21 is formed as an elastic band 21 extending from the outer surface of the peripheral wall 8.
Characterized by being connected in such a manner that it can escape from the through hole. 2. The inner plug according to claim 1, wherein said engagement piece is pressed and deformed inward by a fitting plate.