JP2001055258A - Tamperproof tool for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable not only a user to judge whether or not a container is already opened or not yet but also reduce the manufacturing cost and further impart a function to discriminate the content in the container. SOLUTION: A large annular ring 10 of a damper ring C is fitted to a circular groove arranged in a lower part of a cap B under a state in which it may not be pulled out of it. Further, the cap B is engaged with a threaded segment 5a of a container main body A up to a position where it exceeds over the threaded segment 5a of the container main body A. When the cap B is rotated to its seal opening side, the engaging protrusion 13 arranged at the small circular ring 11 of the tampering C is butted against the projecting section 4 so as to break a thin-wall bridge 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a device for preventing unauthorized opening of a container in which a cap is screwed into a screw portion of a container body.

[0002]

2. Description of the Related Art A so-called tamper ring (illegal opening prevention ring) is widely used for the purpose of allowing a user to clearly confirm whether a liquid container has been opened or not, and to prevent unauthorized opening. As a tamper-resistant device using this tamper ring,
As shown in FIG. 12, a cap B and a tamper ring C that are screwed into the screw portion 50 of the container body A are integrally formed, and the inner peripheral surface of the tamper ring C has a tip side (radially inward side). ), A plurality of locking projections 51 having a reversely inclined posture protruding upward (toward the cap side) are integrally formed, and the locking projections 51 of the tamper ring C are located near the lower portion of the screw portion 50 of the container body A. The cap B is screwed into the screw portion 50 of the container body A until the position exceeds the projecting portion 52,
When the cap B is rotated to the unsealing side, the locking protrusion 51 of the tamper ring C comes into contact with the protruding portion 52 to prevent the tamper ring C from lifting in the unsealing direction. The thin portion 53 joined with B is configured to be broken. The cap B and the tamper ring C are separated by the breakage of the thin portion 53, and a device devised so as to confirm whether the cap B and the tamper ring C have been opened or not by checking the separated state is generally used. Have been.

[0003]

In this kind of conventional tamper-proof device, since the tamper ring C and the cap B are integrally formed, they must be formed by a split mold. The shape of the mold is complicated and the cost is high. Also,
Due to the complexity of the mold, uniform molding is difficult. Further, since the broken pieces of the cap B and the tamper ring C are both exposed to the outside, the pieces can be adhered again with an adhesive or the like, and it is difficult to completely prevent unauthorized opening. Therefore, these improvements have been demanded.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned situation, and a main problem is that a user can reliably and easily determine whether a container has been opened or unopened. Not only can reduce the manufacturing cost of the container, but also increase the degree of freedom in coloring the cap and tamper ring, and easily provide the function of identifying the contents of the container. Another object of the present invention is to provide a useful tamper-proof device for a container.

[0005]

According to the first aspect of the present invention, there is provided a device for preventing unauthorized opening of a container, wherein a ring having a large diameter and a ring having a small diameter are connected to each other with a plurality of thin bridges, and the ring is formed with a plurality of thin bridges. A circular groove provided in the lower part of the cap, of a tamper ring provided with a plurality of locking projections having a reversely inclined posture located on the inner peripheral surface of the small ring at a position closer to the distal end toward the upper side. And the cap is screwed into the screw portion of the container body until the locking projection of the tamper ring exceeds the lowermost end of the screw portion of the container body or a position beyond the protrusion located below it. When the cap is rotated to the unsealing side, the locking projection provided on the small ring of the tamper ring abuts on the screw thread or projection on the lowermost end of the screw part, so that the thin bridge is broken. It is in the point which constituted.
According to the above-mentioned characteristic configuration, after the large ring of the tamper ring formed separately from the cap is fitted in the circular groove provided in the lower portion of the cap in a retaining state, the tamper ring is set. The cap is screwed into the screw part of the container body. At this time, although a plurality of locking projections are provided on the inner peripheral surface of the small ring of the tamper ring, each locking projection is higher (cap side) toward its tip side (radially inward side). Since the locking projection is elastically deformed by the screwing operation of the cap, the locking projection smoothly moves over the screw portion of the container main body or the projecting portion located therebelow. When the cap is rotated to the unsealing side in this state, the locking projection on the annular side where the tamper ring is small comes into contact with the screw thread or the protrusion at the lowermost end of the screw portion with the rotation operation, Since the small ring is prevented from lifting in the opening direction, a plurality of thin bridges joining the two rings of the tamper ring are broken, and the tamper ring is separated into a large ring and a small ring. You. By visually checking the separated state, it is possible to easily determine whether the package has been opened or not. Therefore, the user can reliably and easily determine whether the container has been opened or unopened, as well as
Since the tamper ring is formed separately from the cap, the tamper ring can be formed with a simple punching die, and the manufacturing cost of the container can be reduced. Moreover, since the tamper ring and the cap are molded separately, by coloring the cap and the tamper ring in different colors,
A function of identifying the contents of the container can be easily provided.

The characteristic feature of the container tamper-proofing device according to the second aspect of the present invention is that the small ring of the broken tamper ring remains on the container body side and the large ring remains in the circular groove of the cap. In that it is. According to the above characteristic configuration, since the small ring of the tamper ring after the joint is broken falls down on the shoulder of the container body and remains, it is easy to visually check whether the container has been opened or unopened. Can be. Further, since the large ring is fitted and held in the circular groove of the cap, it does not hinder the screwing operation of the cap.

According to a third aspect of the present invention, there is provided a container tamper-proof device according to a third aspect of the present invention, wherein the large ring of the tamper ring is fitted into a circular groove provided in a lower portion of the cap. On the point. According to the above feature, in the state where the thin bridge joining the two rings of the tamper ring is broken, one of the separated large rings enters the circular groove of the cap and protrudes outside. Since there is no such ring, it is not possible to rejoin the separated rings, and it is possible to reliably prevent unauthorized opening.

According to a fourth aspect of the present invention, there is provided a container tamper-proofing device according to a fourth aspect of the present invention, wherein the container body is blow-molded, and a shoulder portion and a screw portion or a protrusion of the container body generated during blow molding. When the cap is rotated to the opening side, the locking projection of the tamper ring comes into contact with the burr between the burrs and the thin bridge is broken.
That is, although the tamper-evident prevention tool of the present invention can be used for various containers, it can be particularly suitably used for a container whose main body is manufactured by blow molding. In the case of containers manufactured by blow molding, burrs on the molding remain on the outer surface of the container. By using these burrs, the joint can be efficiently broken with a small force, which is very convenient for the elderly It is. That is, when rotating the cap to the unsealing side, the burrs between the shoulder portion of the container body generated at the time of blow molding and the screw portion for screwing the cap or the protrusion located below it, the tamper ring The locking projection abuts, and the locking projection on the annular side where the tamper ring is small abuts on the screw thread or projection on the lowermost side of the screw part,
Since the small ring is prevented from lifting in the opening direction, tensile and shear forces concentrate on multiple thin bridges that join both rings of the tamper ring, and the thin bridge is efficiently broken. .

[0009]

[First Embodiment] FIGS. 1 and 8
Denotes a medical ophthalmic container which is an example of a container (mainly a liquid container), and is made of a synthetic resin such as flexible polyethylene which is filled with a predetermined amount of a drug solution (liquid) at the same time as blow molding (or vacuum molding). And a cap B made of a synthetic resin such as polypropylene, which is detachably screwed into a screw portion 5a formed on the outer peripheral surface of the screw tube portion 5 of the container body A. The container body A has a circular bottom portion 1 that curves inward, a hollow cylindrical body portion 2 connected to the periphery of the bottom portion 1, and a cylindrical neck portion 3 that is continuous with a shoulder 2a on the upper side of the body portion 2. And an annular projection 4 composed of a first annular bulging portion 4A and a second annular bulging portion 4B bulging radially outward in two steps from an upper position of the neck portion 3; A screw cylinder portion 5 having a continuous screw portion 5a and a liquid injection tube portion 6 having a liquid injection port 6a continuous above the screw cylinder portion 5 are provided. A plate-like burr 7 is formed at each of the portions facing each other across the container axis X along the direction of the container axis X generated during blow molding. In addition, in the cap B,
A screw portion 9 detachably screwed to the screw portion 5a of the container body A
And a plug-like projection 8 which is fitted in the liquid inlet 6a of the container body A and hermetically sealed when the screw portions 5a and 9 are screwed to the predetermined closing position.

Next, an unauthorized opening prevention device of the present invention for enabling a user to clearly confirm whether the medical ophthalmic container has been opened or not has been described. The tamper ring (tamper evident ring) C made of a synthetic resin such as polypropylene used for the tamper evident tool is a circle having a large diameter that is superposed and arranged in a concentric state as shown in FIGS. A lower end of a ring (hereinafter, referred to as a large-diameter side ring) 10 and a ring having a small diameter (hereinafter, referred to as a small-diameter side ring) 11
And the upper end of the small-diameter side annular ring 11 are integrally joined stepwise with a plurality of (four in this embodiment) thin bridges 12 located at predetermined intervals in the circumferential direction. A plurality of (eight in this embodiment) latches that are protruded radially inward in a cantilevered state and that are positioned in the oppositely upwardly inclined position (cap side or opening direction side) closer to the tip end side. The projection 13 is formed integrally.

The large diameter side ring 10 of the tamper ring C
Is fitted and held in a circular groove 14 formed in the lower part of the cap B in a state where it is opened toward the shoulder 2a of the container body A, and the locking projection 13 of the tamper ring C is The cap B is screwed onto the screw portion 5a of the container body A to a position beyond the second annular bulging portion 4B of the projecting portion 4 located below the screw portion 5a of the container body A, and the cap B is opened. When rotated, tamper ring C
The locking projection 13 provided on the small-diameter side annular ring 11 abuts on the second annular bulging portion 4B of the protruding portion 4 and moves toward the opening direction side (the liquid inlet 6a side) of the small-diameter side annular ring 11. It is configured to prevent lifting. Therefore, as the cap B rotates to the opening side, the distance between the large-diameter side ring 10 and the small-diameter side ring 11 of the tamper ring C in the container axis X direction gradually increases. The thin bridge 12 joining the 10 and 11 is configured to be broken.

Also, the locking projection 1 of the tamper ring C
When the cap B is screwed into the screw portion 5a of the container body A until the position 3 exceeds the projecting portion 4 of the container body A, or when the cap B is rotated to the opening side from this state, FIG. As shown in (a) and (b), the locking projection 1
3 between the shoulders 2a of the container body A and the protrusions 4 generated during blow molding, in a pair of recesses 15 opposed to each other with the container axis X interposed therebetween. It is configured such that a pair of burrs 7 that are formed so as to engage with each other are engaged.

Therefore, when the cap B is rotated to the opening side, the locking projection 13 of the tamper ring C is
And a locking projection 13 provided on the small-diameter side annular ring 11 of the tamper ring C is provided on the second annular bulging portion 4B of the projecting portion 4 of the container main body A. From the opening direction of the small-diameter side ring 11 (the liquid inlet 6a
Side), the tensile force and the shearing force concentrate on a plurality of thin bridges 12 joining the two rings 10, 11 of the tamper ring C.
The thin bridge 12 is efficiently broken.

When the thin bridge 12 is broken, it is completely separated into the large-diameter side ring 10 and the small-diameter side ring 11, and the small-diameter side ring 11 falls by its own weight and falls into the container body A.
And the large-diameter side ring 10 is configured to remain in the circular groove 14 of the cap B. At this time, the length of the large diameter ring 10 in the container axis X direction is smaller than the length of the circular groove 14 of the cap B in the container axis X direction. Specifically, of the inner and outer peripheral wall portions 16 and 17 constituting the circular groove 14 of the cap B, the outer peripheral wall portion 17
Is configured to be larger than the length of the large-diameter-side annular ring 10 in the container axis X direction, and the lower end surface 17a of the outer peripheral wall portion 17 is located in the circular groove 14. The large-diameter side ring 10 of the tamper ring C is formed so as to protrude below the lower end surface 10a of the fitted and held large-diameter side ring 10 (toward the shoulder 2a of the container body A). Is fitted in a circular groove 14 provided in the lower part of the main body. Therefore, one of the separated large-diameter rings 10 enters the circular groove 14 of the cap B and does not protrude to the outside, so that it is impossible to rejoin the separated rings 10 and 11. Therefore, unauthorized opening can be reliably prevented.

At the end of the outer peripheral surface of the large-diameter side annular ring 10, a circular groove is engaged with an engaging groove 17 b formed in the inner peripheral surface of the outer peripheral wall portion 17 facing the circular groove 14. An annular engagement projection 10b is formed in the inside 14 to prevent the large-diameter-side annular ring 10 fitted from coming off.

The large-diameter side ring 10 has a circular groove 14.
The upper end surface 1 of the small-diameter side ring 11 when fitted and held
1a is configured to abut or approach the lower end surface 16a of the inner peripheral wall portion 16 of the cap B from the container axis X direction. [Other Embodiments] (1) In the above-described first embodiment, the first annular bulging portion 4A and the second annular bulging portion diametrically outwardly bulging in two steps are provided at positions near the lower portion of the screw portion 5a. Although the container body A having the annular projecting portion 4 including the projecting portion 4B is used, the projecting portion 4 may be any one of the first annular projecting portion 4A and the second annular projecting portion 4B. When the cap B is rotated to the opening side, the locking projection 13 of the tamper ring C comes into contact with the container axis X direction, and the small-diameter side ring 11 is opened. Direction side (injection port 6a side)
If it can prevent lifting to
The protrusion 4 may be formed intermittently in the circumferential direction. Furthermore,
You may implement using the container main body A which is not provided with the protrusion part 4 as mentioned above. That is, you may implement using the container main body A connected directly from the shoulder part 2a to the screw part 5a. In this case, the cap B is screwed onto the screw portion 5a of the container body A until the locking projection 13 of the tamper ring C exceeds the screw thread at the lowermost end of the screw portion 5a of the container body A, and the cap B is opened. When rotated to the side, the locking projection 13 provided on the small diameter side ring 11 of the tamper ring C comes into contact with the screw thread at the lowermost end of the screw portion 5a, and the opening direction of the small diameter side ring 11 is opened. It is configured to prevent lifting to the side (injection port 6a side). (2) In the first embodiment described above, the container body A is blow-molded as an example. However, the container body A may be manufactured by another molding method such as vacuum molding. Can be implemented. (3) In the above-described first embodiment, the small-diameter side ring 1
The locking projections 13 having the oppositely inclined posture are integrally formed at each of eight places in the circumferential direction of the inner peripheral surface of the inner peripheral surface 1. The number of the locking projections 13 is as follows.
It may be one or more. (4) In the above-described first embodiment, the large-diameter-side ring 10 and the small-diameter-side ring 11 of the tamper ring C are stepped by the four thin bridges 12 located at appropriate intervals in the circumferential direction. Although they are integrally joined, the number of the thin bridges 12 may be one or more.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a device for preventing unauthorized opening of a container according to the present invention, wherein (a) is an overall front view before opening (b) is an overall front view after opening.

FIG. 2 is a front view of a main part immediately before a cap on which a tamper ring is set is screwed into a container body.

FIG. 3 is a cross-sectional front view just before setting a tamper ring on a cap.

FIG. 4 is a plan view of a tamper ring.

FIG. 5 is a cross-sectional view of a main part of the cap on which the tamper ring is set while the cap is being screwed.

FIG. 6 is a cross-sectional view of a main part immediately before screwing of a cap on which a tamper ring is set is completed.

FIG. 7A is a plan view of the cap on which the tamper ring is set while the cap is screwed, and FIG. 7B is a plan view of the cap on which the tamper ring is set when screwing is completed.

FIG. 8 is a cross-sectional front view of a main part when screwing of a cap on which a tamper ring is set is completed.

9A is a cross-sectional plan view of a main part when the cap is opened, and FIG. 9B is a cross-sectional plan view of a main part when the cap is broken due to the opening operation.

FIG. 10 is a cross-sectional front view of a main part when the cap is opened.

FIG. 11 is a cross-sectional front view of a main part showing a separated state after a rupture due to an opening operation of the cap.

FIG. 12 is a front view of a main part showing a conventional device for preventing unauthorized opening of a container.

[Explanation of symbols]

 Reference Signs List A container main body B cap C tumbler ring 2a shoulder portion 4 projecting portion 5a screw portion 7 burr 10 large ring (large diameter side ring) 11 small ring (small diameter side ring) 12 thin bridge 13 locking projection 14 circular groove

Continued on the front page F-term (reference) 3E084 AA04 AA12 AA25 AB05 BA02 CA01 CC05 DA01 DB05 DB12 DC05 EA02 EC05 FA09 FB01 GA04 GB04 GB08 KA13 KB01 LA05 LA17 LB02 LB07

Claims (4)

[Claims] 1. A ring having a large diameter and a ring having a small diameter are joined stepwise by a plurality of thin bridges, and a plurality of inverted inclined postures are located on the inner peripheral surface of the small ring at a position closer to the tip end. Of the tamper ring provided with the locking projections, a large ring is fitted in a circular groove provided in the lower portion of the cap in a retaining state, and the locking projections of the tamper ring are screwed into the screw portion of the container body. When the cap is screwed into the screw portion of the container body up to a position exceeding the lowermost end or a protruding portion located below the lower end, and the cap is rotated to the opening side, the cap provided on the small ring of the tamper ring is opened. An unauthorized opening prevention device for a container, wherein a stopper projection abuts on a screw thread or a protrusion at the lowermost end of a screw portion to break a thin bridge. 2. The container for preventing unauthorized opening of a container according to claim 1, wherein the broken small ring of the tamper ring remains on the container body side and the large ring remains in the circular groove of the cap. 3. The container for preventing unauthorized opening of a container according to claim 1, wherein the large ring of the tamper ring is fitted into a circular groove provided in a lower portion of the cap in a state of being inserted. 4. The container according to claim 1, wherein the container body is blow-molded, and a tamper is formed when a cap is rotated to an opening side at a burr between a shoulder portion and a screw portion or a protrusion portion of the container body generated at the time of blow molding. 4. The device for preventing unauthorized opening of a container according to claim 1, wherein the locking projection of the ring is abutted and the thin bridge is broken.