JPH10297656A - Cap structure for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve handling of a cap body and also to stabilize assembly of an inner plug with a container in an outer cap assembled with the inner plug having an ejection cylinder with a function for preventing illegal unsealing, by rigidly holding tight assembly of the inner plug with the container and by opening/closing the inner plug at the body where the inner plug is attached to/removed from the body. SOLUTION: The cap structure comprises an inner plug 5 which is tightly assembled with a mouth cylinder 2 of a container 1 and has a standing ejection cylinder 9 and an outer cap 13 wherein a body 16 to be attached to/removed from the ejection cylinder 9 is integrally coupled with a pressing board 15 connected with an assembly cylinder 14 to be assembled with the mouth cylinder 2 so that it cannot be removed via a separating piece 17 which is easy to break. In this case, assembly of the inner plug 1 with the container 1 is held by the pressing board 15, and the separating piece 17 is positioned at a diameter size position of the body 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container cap structure having a function of preventing tamper opening and having a high sealing ability.

[0002]

2. Description of the Related Art In a bottle-like container for storing a liquid,
Consumers are required to ensure sealing until purchase. To meet this demand, caps with a tamper-proof function, such as a pill fur proof cap structure, are frequently used.

[0003] Various structures have been proposed as a tamper-proof function of this cap, but a structure represented by a pill fur proof cap is provided at the lower end of a cap body of a screw cap structure in a mouthpiece of a container. In this structure, an opening prevention ring piece that is locked from below on the peripheral rim is integrally provided via a thin piece that is easily broken.

In this conventional tamper-evident preventing structure, the sealing of the container is firmly secured by integrally connecting the opening preventing ring to the cap body, and the container is already opened by separating the opening preventing ring from the cap body. It can be known that it is.

[0005] Further, such as a container for storing a content liquid containing a volatile component, a high sealing property is required even after opening, and it is necessary to accurately pour the content liquid to a target portion. Is an inner spigot that is integrated with a thin spout cylinder and is tightly fitted and assembled into the mouthpiece of the container, molded from a soft synthetic resin with excellent sealing properties, and the spout formed in this inner spigot. Is known using a screwing force of the cap body to the container, and a structure combining this sealing method with the above-mentioned tamper-proof structure is also considered.

[0006]

However, in the above-mentioned prior art, since the screwing force of the cap body to the container is used to maintain the sealing of the spout of the inner plug, the cap body is not used. Requires a size that can be directly attached to and detached from the mouthpiece of the container.
Unless the difference between the diameter of the mouthpiece of the container and the diameter of the spout of the inner stopper is sufficiently small, it becomes difficult to effectively apply the screwing force of the cap body to the container to achieve the sealing, There has been a problem that the handling form of the cap body tends to be inferior.

In particular, when the container is a blow-molded product made of synthetic resin, it is generally necessary to keep the ratio of the diameter to the body of the container and the mouthpiece within a certain range. Except for a small container such as a container, a large difference inevitably occurs between the diameter of the mouthpiece of the container and the diameter of the spout of the inner plug.

In order to avoid this problem, if the cap body is configured to be attached to and detached from the spout cylinder of the inner plug, not to the mouthpiece of the container, the screwing force of the cap body will be reduced to the tightness of the inner plug with respect to the container. It cannot be used to maintain the assembling, and the tight assembling of the inner stopper to the container must be achieved and maintained only by the elasticity of the inner stopper itself. There is a problem that it may deteriorate early.

Therefore, the present invention has been made to solve the above-mentioned problems in the prior art, and the cap body is poured out while the tight attachment of the inner plug to the container is maintained. It is a technical task to attach and detach only the cylinder, so that the inner plug is tightly assembled to the container after opening, and the cap body is suitably sealed with the cap body, and the cap body is properly sealed. The purpose is to obtain proper handling.

[0010]

Means for Solving the Problems Among the present invention which achieves the above technical object, the means according to the first aspect of the present invention is mounted on a bottle-shaped container provided with a ridge on an outer peripheral surface of a mouthpiece. Being a cap, an outer cylinder externally fitted to the container mouth via an outer flange is continuously provided on the outer peripheral surface of the inner cylinder closely fitted to the upper end opening of the container mouth, and from the upper end of the inner cylinder, A spout cylinder with a male screw engraved on the outer peripheral surface is configured to be erected and connected, and has a middle stopper that is assembled to the container mouthpiece so that it cannot rotate, from over the circumference of the container mouthpiece from below A locking strip for locking is provided on the inner peripheral surface, and a holding plate that abuts on the upper surface of the outer flange of the inner plug is continuously provided in an inner flange shape on the upper end of the assembled cylinder that is provided on the outer cylinder of the inner plug. An outer thread that is integrally connected by a breakable separating piece between a body having a topped cylindrical shape in which a female screw screwed with a male screw provided in the pouring cylinder is engraved on the inner peripheral surface and a holding plate that is easily broken. Cap To have, in the.

According to a second aspect of the present invention, in the first aspect of the present invention, a plug piece that fits tightly into a pouring hole, which is an upper end opening of the pouring cylinder of the inner plug, on the lower surface of the top plate of the main body of the outer cap. It was added, and it was added.

According to a third aspect of the present invention, in the first aspect of the present invention, a plurality of vertical stripes are provided on the outer peripheral surface of the mouthpiece of the container, and the inner peripheral surface of the outer cylinder of the inner plug is provided on the vertical surface of the container. In addition to the provision of a locking vertical line for locking from the circumferential direction.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the upper half portion of the spout cylinder of the inner plug is formed into a thin tube, and the upper half portion of the thin spout tube is opposed to the thin tube. In addition to the above, there are provided several vertical strip-shaped finger hooks having a large protruding height on the outer peripheral surface of the main body of the outer cap.

The cap is assembled to the container by, for example, assembling the outer cap and the inner plug by screwing the main body of the outer cap to the discharge tube of the inner plug, and combining the outer cap and the inner plug. Into the mouthpiece of the container containing the fixed amount of the liquid, from the top, so that the inner cylinder of the inner stopper is tightly fitted into the mouthpiece of the container, and the locking line of the assembled cylinder of the outer cap is Achieved by locking from below on the circumferential line of the barrel.

In the state where the cap is assembled to the container in a sealed manner, the inner cap is tightly and non-rotatably assembled to the mouthpiece of the container, the outer cap is irremovably assembled to the mouthpiece of the container, and The outlet cylinder is sealed by the main body of the outer cap fitted with a screw, and the outer flange of the inner plug is pressed against the upper end surface of the mouthpiece of the container by the pressing plate of the outer cap. The holding plate and the holding plate are integrally joined by a separating piece, and the container is in a sealed state before opening, in which an illegitimate opening prevention function portion constituted by the cylinder with the outer cap, the holding plate and the separating piece functions.

In this state, when the main body of the outer cap is rotated in the unscrewing direction to be displaced upward with respect to the container, the assembled cylinder of the outer cap and the holding plate cannot be displaced upward with respect to the container. As a result, the main body of the outer cap forcibly breaks the separation piece and separates from the spout cylinder of the inner plug, thereby opening the spout cylinder, that is, opening the container.

As described above, when the container is opened by unscrewing the main body of the outer cap from the sealed state of the container before opening, the cut piece of the illegitimate opening prevention function portion is broken. By checking the presence or absence, it can be clearly determined whether or not the container has already been opened.

Opening and closing of the container after opening the container is achieved by screwing and unscrewing of the main body of the outer cap with respect to the spouting tube of the inner plug. And the holding plate remains attached to the container and the inner stopper, so that the outer flange of the inner stopper is kept pressed against the upper end surface of the container by the outer cap pressing plate. The tight assembly of the inner plug will be held in a non-removable state.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. The container 1 is a blow molded bottle made of synthetic resin, and the cylindrical
At the lower end of the outer peripheral surface of the outer peripheral surface, a peripheral rim 3 is protrudingly provided.
Are arranged at intervals along the circumferential direction.

The inner plug 5 is an injection-molded product made of a relatively soft synthetic resin, and has a peripheral end of an outer flange 8 continuously connected in an outer flange shape from the upper end of the outer peripheral surface of the inner cylinder 6 closely fitted to the mouthpiece 2. From the edge, an outer cylinder 7 for hanging the outer cylinder 7 on the upper part of the mouthpiece 2 higher than the circumferential line 3 is suspended, and an inner cylinder 6 is provided.
From the upper end, a pouring hole 12 is opened at the upper end via a reduced diameter step portion, and an elongated tubular pouring cylinder 9 having a male screw 11 engraved on the outer peripheral surface of the lower half thereof is erected continuously. ing.

On the inner peripheral surface of the outer cylinder 7, the vertical stopper 4 provided on the mouthpiece 2 of the container 1 is locked from the circumferential direction to achieve the non-rotatable assembly of the inner plug 5 with respect to the container 1. A plurality of locking vertical stripes 10 are protruded, and the upper half of the injection cylinder 9 is provided with a reduced diameter step portion with respect to the lower half of the injection cylinder 9 engraved with the male screw 11.
It is a thin tube with a smaller diameter.

The outer cap 13 is provided at the lower end of the inner peripheral surface thereof with a locking strip 18 for locking the circumferential strip 3 of the container 1 from below. From the upper end edge of the attached cylinder 14, in the state where the locking ridge 18 is locked to the peripheral ridge 3, a pressing plate 15 that is pressed against the upper surface of the outer flange 8 of the inner plug 5 is provided in an inner flange shape, A female screw 19 that fits on the holding plate 15 with the spout cylinder 9 of the inner plug 5 and is screwed on the inner peripheral surface with the male screw 11 of the inner plug 5.
The main body 16 having a cylindrical shape with a crest is integrally connected by a plurality of (four in the illustrated embodiment) separating pieces 17 which are easily broken.

The separating piece 17 is provided in a bridging manner between the outer peripheral end of the lower end surface of the main body 16 having a gap vertically and the inner peripheral end of the upper surface of the holding plate 15. Since it is located in the gap between the main body 16 and the holding plate 15 and at the outer end of the lower end surface of the main body 16, it is in a state that is easy for the consumer to visually recognize. The presence or absence of breakage of the piece 17 can be determined at a glance.

At the center of the lower surface of the top plate 20 of the main body 16, a plug piece 21 that fits tightly into the pouring hole 12 of the pouring cylinder 9 of the inner plug 5 is provided to hang down. Of the female screw 1 is firmly and reliably achieved.
On the outer peripheral surface of the upper half portion of the main body portion 16 except for the lower half portion on which 9 is engraved, a plurality of (four in the case of the illustrated embodiment) finger hanging strips 22 having a large protruding height are provided on the top plate. It is provided at an equal central angle continuously up to the upper surface of 20.

The opening of the container 1 due to the breakage of the separating piece 17
This is achieved by forcibly rotating the main body 16 of the outer cap 13 in the unscrewing direction. However, since the outer diameter of the main body 16 is small, a relatively large main body is required to break the separation piece 17. A relatively large rotating operation force is applied to the main body 16 by providing the main body 16 with a finger ridge 22 having a large protruding height and being easily caught by a fingertip. It is easy.

[0026]

Since the present invention has the above-described structure, the following effects can be obtained. The assembled cylinder and the holding plate, which constitute the tamper-proof function of the outer cap, are not simply attached to the container mouthpiece so that they cannot be detached, but also the inner stopper mouthpiece closely fitted to the container mouthpiece. It is necessary to screw the main body portion of the outer cap to the container and hold the inner plug tightly to the container by utilizing the screwing force. Without this, the main body functioning as the opening and closing cap of the outer cap can be directly attached to and detached from the spout cylinder of the inner plug, so that the size of the main body can be adapted to the spout cylinder, and after opening The handling of the cap can be made preferable, and the opening and closing of the discharge tube can be suitably achieved.

The combination of the cylinder with the outer cap fixedly attached to the container side and the holding plate is configured such that the holding plate is located on the outer flange of the inner plug attached to the container. The integral connection by a separating piece between the part fixedly attached to the container side of the container and the main body that directly opens and closes the ejection tube of the inner plug can be achieved by using the holding plate, and thereby, for example, the container Even when the diameter of the main body is significantly smaller than the diameter of the mouthpiece, the separation piece can be positioned at the same diameter as the main body, so that the diameter of the main body is small. Even if it does, the operation force on the main body required to break the separation piece does not increase, and the breakage of the separation piece can be smoothly achieved with the normal operation force.

According to the second aspect of the present invention, it is possible to firmly and stably achieve the sealing of the spout cylinder by the main body of the outer cap.

According to the third aspect of the present invention, it is possible to achieve a non-rotatable assembly of the inner plug with respect to the container simply by pushing the inner plug into the mouthpiece of the container. The assembly operation can be made very simple.

According to the fourth aspect of the present invention, even when the diameter of the main body of the outer cap is reduced, a turning operation force by a fingertip on the main body can be easily applied. Can be easily opened and closed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a main part in a sealed state, showing a first embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view of a main part of the embodiment shown in FIG.

FIG. 3 is an overall side view of the embodiment shown in FIG. 1;

FIG. 4 is an overall plan view of the embodiment shown in FIG. 1;

[Explanation of symbols]

 Reference Signs List 1; container 2; mouth tube 3; circumferential line 4; vertical line 5; inner plug 6; inner tube 7; outer tube 8; outer flange 9; ejection tube 10; locking vertical line 11; male screw 12; Hole 13; Outer cap 14; Assembled cylinder 15; Pressing plate 16; Main body 17; Separating piece 18; Locking strip 19; Female screw 20; Top plate 21; Plug strip 22;

Claims (4)

[Claims] A cap to be attached to a bottle-like container (1) provided with a circumferential strip (3) on the outer peripheral surface of a barrel (2), wherein the cap is tightly closed at an upper end opening of the barrel (2). On the outer surface of the inner cylinder (6)
An outer cylinder (7) externally fitted to the mouthpiece (2) is continuously provided via an outer flange (8), and a male screw (11) is engraved on the outer peripheral surface from the upper end of the inner cylinder (6). The pouring cylinder (9) is constructed by standing upright,
An inner stopper (5), which is non-rotatably assembled to (2), and a locking ridge (18) which locks from below by passing over the peripheral ridge (3) of the mouthpiece (2) are provided on the inner peripheral surface, At the upper end of the assembled tube (14) exteriorly attached to the outer tube (7), a holding plate (15) contacting the upper surface of the outer flange (8) is continuously provided in an inner flange shape, and the male screw (11) and A main body (16) having a cylindrical shape with a top having a female screw (19) to be screwed in engraved on the inner peripheral surface and the holding plate (1)
And (5) an outer cap (13) integrally connected by a breakable separating piece (17). 2. The top plate (20) of the main body (16) of the outer cap (13).
2. The container cap structure according to claim 1, wherein a plug piece (21) closely fitted into the pouring hole (12), which is an upper end opening of the pouring cylinder (9), is provided on the lower surface. 3. A plurality of vertical stripes (4) are provided on an outer peripheral surface of a mouthpiece (2), and an inner peripheral surface of an outer cylinder (7) is engaged with the vertical stripes (4) from a circumferential direction. The container cap structure according to claim 1 or 2, further comprising a vertical strip (10). 4. An upper half portion of the discharge tube (9) is formed in a thin tube shape, and a main body portion facing the upper half portion of the thin discharge tube (9) is formed.
The container cap structure according to claim 1, 2 or 3, wherein a plurality of vertical strip-shaped finger hooks (22) having a large protruding height are provided on the outer peripheral surface of (16).