JP2021133978A - Cap with hinge function - Google Patents

Abstract

To provide a cap with a hinge function capable of achieving a tamper-evidence function in a simple structure.SOLUTION: The cap with the hinge function includes: a cap body 11; and a tamper-evident ring 14 connected to a lower end of the cap body via a plurality of bridges 12. One of the bridges includes a broad bridge 13 broadly formed in a circumferential direction of the tamper-evident ring. A narrow part 15 where the tamper-evident ring is narrowed in a vertical direction is formed at least at one side of the broad bridge. A structure for regulating rotation to a direction opposite to a side where the narrow part is formed is provided in the tamper-evident ring. The tamper-evident ring is deformed in the vicinity of the narrow part by rotating the cap body to the direction opposite to the side where the narrow part is formed with respect to the tamper-evident ring, and the bridges other than the broad bridge are cut. The broad bridge function as a hinge so that the cap body is freely openable/closable.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cap attached to a spout of a container mainly containing a liquid such as a bottle, a pouch, and a liquid paper container, and more particularly to a cap having a hinge function having tamper evidence.

Conventionally, the mouth of a container used for liquid contents of foods and non-foods is equipped with a spout and a cap, which serve as a spout for sealing the container and pouring out the contents. And various forms have been used over a wide range of applications.

This spout is a spout that protrudes from the spout mounting hole of the container, and the cap is screwed on with a screw or connected with a hinge that can be opened and closed. At the same time, a tamper evidence function is provided to prevent the cap from returning to its original state due to destruction when the cap is opened so that it can be seen that the cap was opened illegally due to foreign matter being mixed in during distribution. Is known. For example, as shown in FIG. 6, the tamper evidence band 34 of the spout 30 and the cap 31 are connected by a plurality of thin bridges 32 that are broken when the cap 31 is opened, and when the cap 31 is opened, the bridge 32 is connected. It becomes the broken aspect 32b, and it becomes clear that the package was opened illegally.

Patent Document 1 describes a lid screwed to the mouth and neck of a container, provided with a sealing band at the lower part of the lid body via a bridge-shaped fragile portion, and rotates the lid body in the opening direction. The lid structure of the container is disclosed so that the fragile portion is broken and the container is opened.

Further, Patent Document 2 discloses a spout with a tamper-evidence function, and when the cap body is rotated in the screw-out rotation direction, the fragile bridge connecting the cap body and the tamper-evidence band is cut, and the tamper shrimp is cut. A spout that indicates that the patent band has been opened illegally by opening it wide has been disclosed.

Japanese Unexamined Patent Publication No. 2003-34169 Japanese Unexamined Patent Publication No. 2009-40442

However, the tamper evidence function as disclosed in each of the above references can be applied to a type of spout in which the cap is screwed to a spout, but it is difficult to apply to a hinge cap that opens and closes the cap with a hinge. There was a problem. That is, since the hinge cap must be connected to the spout at the hinge portion, it is not possible to cut the bridge or the like for tamper evidence while twisting the cap.

Therefore, as a tamper evidence mechanism for the hinge cap, for example, as shown in FIG. 7, the cap 41 and the base 44 are connected by the hinge 43, and the portion other than the hinge 43 is weakened between the cap 41 and the base 44. The cutting tape 42 surrounded by a line is provided in a circular shape, and the cap 41 is separated and removed along the weakening line by picking and pulling the tab 45 provided at one end of the cutting tape 42, so that the cap 41 is hinged 43. There is one that can be opened and closed by rotating with. However, this cutting tape mechanism has problems that the structure is complicated, it takes time and effort to manufacture, it is costly, and it is difficult to cut the tape if the spout is small.

In order to solve the above problems, the hinged cap of the present invention is a hinged cap attached to a spout attached to a spout of a container.
It has a cap body and a tamper evidence ring connected to the lower end of the cap body via a plurality of bridges.
One of the bridges consists of a wide bridge formed wide in the circumferential direction of the tamper evidence ring.
A narrow portion is formed on at least one side of the wide bridge so that the tamper evidence ring is narrow in the vertical direction.
The tamper evidence ring is provided with a structure that regulates rotation in the direction opposite to the side on which the narrow portion is formed.
The bridge and the tamper evidence ring rotate the cap body in the direction opposite to the side where the narrow portion is formed with respect to the tamper evidence ring, whereby the tamper is located in the vicinity of the narrow portion. The evidence ring is deformed, and bridges other than the wide bridge are cut.
The wide bridge functions as a hinge, so that the cap body can be opened and closed.

In the cap with a hinge function, the narrow portion may be formed on the lower end side of the tamper evidence ring.

In the cap with a hinge function, the narrow portion may be formed in a curved shape when viewed from the side.

In the cap with a hinge function, the narrow portion may be formed so as to be inclined from the upper side on one end side to the lower side on the other end side when viewed from the side.

In the cap with a hinge function, a locking portion for locking the cap body to the spout may be provided on the side of the cap body opposite to the wide bridge in the radial direction.

In the cap with a hinge function, the inner peripheral side of the tamper evidence ring may be fitted to the spout.

According to the present invention, one of the bridges provided at the lower end of the cap body is a wide bridge formed wide, and the tamper evidence ring forms a narrow portion at least on one side of the wide bridge. When the main body is rotated, the tamper evidence ring is deformed (twisted) in the narrow part, and the twisting force can easily cut bridges other than the wide bridge, and the remaining wide bridge is used as a hinge. By doing so, it is possible to obtain a cap with a hinge function in which the cap body can be opened and closed, and a cap with a hinge function having a tamper-evidence property can be obtained with a simple structure.

It is a schematic side view of one form of the cap with a hinge function of this invention. It is a schematic sectional drawing of one form of the cap with a hinge function of this invention. It is a schematic side view of another form of the cap with a hinge function of this invention. It is a figure explaining an example of the narrow part of the cap with a hinge function of this invention. It is a figure which shows the form example of the narrow part of the cap with a hinge function of this invention. It is a schematic explanatory drawing of the structural example of the screw type cap which has the conventional tamper evidence property. It is a schematic explanatory drawing of the configuration example of the cap with the hinge function of the conventional tamper evidence property.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below. Further, in the following, the same reference numerals may be given to equivalent members and the like, and the description thereof may be omitted.

FIG. 1 is a schematic side view of one form of the hinged cap of the present invention. The hinged cap 1 is attached to a spout that is attached by welding to the spout of a container such as a bottle or liquid paper container, and closes the spout of the container so that it can be opened and closed. It is formed by molding or the like. In the cap 1 with a hinge function, a tamper evidence ring (hereinafter referred to as “TE ring”) 14 is connected to the lower end of the cap body 11 via a bridge 12.

The cap body 11 is a member that closes the spout of the container so as to be substantially openable and closable, and the approximate shape is a cylindrical shape with one end closed. The TE ring 14 is an annular member, and is connected to the cap body 11 by a plurality of bridges 12 arranged along the circumferential direction of the TE ring 14. The bridge 12 is formed in a columnar shape thinner than the cap body 11 and the TE ring 14. One of the above bridges is a wide bridge 13 that is wide in the circumferential direction. A narrow portion 15 is formed on one side of the wide bridge 13, on the left side in the example of FIG. 1, in which the TE ring 14 is narrow in the vertical direction.

When the cap body 11 is rotated with respect to the wide bridge 13 in the direction opposite to the side where the narrow portion 15 is provided (opening direction), that is, the cap body 11 is rotated counterclockwise, the TE ring 14 is rotated. , The cap body 11 is fitted to a spout (not shown), so that the cap body 11 is restricted from rotating in that direction, so that the cap body 11 does not rotate, and the bridge 12 and the wide bridge 13 are pulled laterally and sheared. It takes a force to do. At this time, the narrow portion 15 has lower rigidity than the other portions of the TE ring 14, and is easily deformed because the bridge is not provided. The relatively thin bridge 12 is easily cut by applying a larger shearing force. On the other hand, since the wide bridge 13 is wide, it has high durability against shearing force, and further, the narrowing portion 15 is deformed to relax the shearing force, so that the wide bridge 13 remains unsheared.

By stopping the rotation of the cap body 11 when the bridge 12 is cut, the hinged cap 1 has the cap body 11 and the TE ring 14 separated at the cut bridge 12b, and only the wide bridge 13 part. It becomes a mode connected by. As shown in FIG. 2, the wide bridge 13 is erected at the upper end of the TE ring 14, and although it is wide, it is relatively thin in thickness, so that it is easily deformed in the thickness direction. Therefore, the wide bridge 13 can function as a hinge, and by lifting and rotating the cap body 11 from the opposite side in the radial direction to the wide bridge 13, the cap body 11 is opened and the spout 17 spout 18 is externally opened. The contents can be poured out.

Further, if a locking portion 16 for locking the cap body 11 to the spout 17 is provided on the opposite side of the cap body 11 from the wide bridge 13 in the radial direction, the cap body 11 can be easily locked to the spout 17 in the closed state. This is preferable because the cap body 11 can be held in a closed state. A known locking mechanism may be appropriately adopted and applied to the locking portion 16. Further, in order to regulate the rotation of the TE ring 14, as shown in FIG. 2, a polygonal shape in which the inner peripheral surface of the TE ring 14 and the outer peripheral surface of the spout 17 are the fitting portions 19 of the convex portion and the concave portion. A known structure such as a method of forming a fitting portion, a combination of ridges and grooves, and a flap structure can be adopted. However, it is preferable not to provide the wide bridge 13 and the narrow portion 15 in the vicinity so as not to hinder the deformation of the TE ring 14.

The width of the wide bridge 13 in the circumferential direction may be appropriately set according to the size and material of the cap with the hinge function, and is not particularly limited. However, it is preferable that the width is such that the cap body 11 is not cut when it is rotated and the cap body 11 is not difficult to open and close when it is operated as a hinge. For example, it is preferably 0.8 mm to 5 mm.

The method for manufacturing the cap 1 with a hinge function is not particularly limited, and a known method such as injection molding can be adopted. The material constituting the cap 1 with a hinge function is not particularly limited as long as it can be applied to a manufacturing method such as injection molding, but for example, polypropylene-based resins, particularly polypropylene, polypropylene and ethylene, and other other materials. Examples include random (or block) copolymers with α-olefins and blends thereof. Further, examples of the material constituting the spout 17 include polyethylene, polypropylene, and the like.

FIG. 3 is a schematic side view of another form of the hinged cap of the present invention. In the present embodiment, narrow portions 15 are formed on both the left and right sides of the wide bridge 13 in the TE ring 14. In the present embodiment, since the narrow portions 15 of the TE ring 14 are formed on both sides of the wide bridge 13, the cap body 11 may be rotated in either direction. That is, the same action as described above occurs regardless of whether the cap body 11 is rotated clockwise or counterclockwise, the bridges 12 other than the wide bridge 13 are cut, and the remaining wide bridge 13 is used as a hinge to cap the cap body 11. The main body 11 can be opened and closed freely.

FIG. 4 is a diagram illustrating an example of a narrow portion of the cap with a hinge function of the present invention. In this example, the narrow portion is formed in a curved shape that is curved in a gentle S shape. With such a shape, the curved portion is easily stretched when the cap body 11 is rotated, so that the narrow portion 15 is easily deformed and the bridge 12 is easily cut.

As the shape of the narrow portion 15, other shapes can be adopted. For example, as shown in FIG. 5, a cap 4 with a hinge function provided in the middle portion of the TE ring 14, from above one end to the other end. It is also possible to use a cap 5 with a hinge function provided in a state of being inclined downward. Further, any of these shapes may be a cap 6 with a hinge function applied to a mode in which narrow portions are formed on both the left and right sides of the wide bridge 13 as described with reference to FIG.

As described above, according to the cap with a hinge function of the present invention, the bridge can be cut by simply rotating the cap body in either the left or right direction, and the remaining wide bridge can be used as a hinge to open and close the cap body. It is possible to provide a cap with a hinge function that can realize a tamper evidence function with a simple structure.

1, 2, 3, 4, 5, 6, 7 ... Cap with hinge function 11 ... Cap body 12 ... Bridge 12b ... Bridge in the disconnected state 13 ... Wide bridge 14 ...・ Tamper evidence ring (TE ring)
15 ... Narrow portion 16 ... Locking portion 17 ... Spout 18 ... Spout 19 ... Fitting portion

Claims (6)

A hinged cap that is attached to the spout attached to the spout of the container.
It has a cap body and a tamper evidence ring connected to the lower end of the cap body via a plurality of bridges.
One of the bridges consists of a wide bridge formed wide in the circumferential direction of the tamper evidence ring.
A narrow portion is formed on at least one side of the wide bridge so that the tamper evidence ring is narrow in the vertical direction.
The tamper evidence ring is provided with a structure that regulates rotation in the direction opposite to the side on which the narrow portion is formed.
The bridge and the tamper evidence ring rotate the cap body in the direction opposite to the side where the narrow portion is formed with respect to the tamper evidence ring, whereby the tamper is located in the vicinity of the narrow portion. The evidence ring is deformed, and bridges other than the wide bridge are cut.
A cap with a hinge function, characterized in that the cap body can be opened and closed by the wide bridge functioning as a hinge. The cap with a hinge function according to claim 1, wherein the narrow portion is formed on the lower end side of the tamper evidence ring. The cap with a hinge function according to claim 1, wherein the narrow portion is formed in a curved shape when viewed from the side. The cap with a hinge function according to claim 1, wherein the narrow portion is formed so as to be inclined from the upper side on one end side to the lower side on the other end side when viewed from the side. Any of claims 1 to 4, wherein a locking portion for locking the cap body to the spout is provided on the side of the cap body opposite to the wide bridge in the radial direction. Cap with hinge function described in. The cap with a hinge function according to any one of claims 1 to 5, wherein the inner peripheral side of the tamper evidence ring has a shape to be fitted to the spout.

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