JP2022135213A - cap - Google Patents

Abstract

To provide a cap capable of visibly checking initial opening or trace of an attempt of the initial opening with ease.SOLUTION: A cap 1 comprises: an inside plug 2 attached to a mouth part M of a container; and an upper lid 3 attachable/detachable to the inside plug 2. The upper lid 3, at its lower end part, has a separation band 41 for separating at initial opening. The separation band 41 comprises a protruding part 43 protruding toward the inside plug 2. The inside plug 2 includes a receiving part 26 positioned below the protruding part 43 of the separation band 41 before initially opened. The receiving part 26 receives the protruding part 43 of the separation band 41 dropped by being separated by the initial opening.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a cap provided with an upper lid that can be attached to and detached from an inner plug that is attached to the mouth of a container.

Like other caps, tamper-evident caps are also required for caps that include an upper lid that can be attached to and detached from an inner plug that is attached to the mouth of a container. Even if a container with a tamper-evident cap attached is tamper-evident, even if the cap is tamper-evidently unsealed in the initial stage and a foreign object is mixed into the container, the trace of the tamper-evident initial unsealing remains. is.

Conventionally, there has been proposed a cap that has tamper-evident properties and is easy to remove from the mouth of a container (see, for example, Patent Document 1). In the cap (plastic cap) described in Patent Document 1, as shown in FIG. 3 of the patent document, the separation band (annular band 31) is separated from the upper lid 2 upon initial opening, so tamper-evidence is guaranteed. ing.

JP-A-11-130113

By the way, in the cap (plastic cap) described in Patent Document 1, as shown in FIG. The annular band 31 ) remains on the horizontal flange 7 . Therefore, when the cap (plastic cap) is opened in the initial stage, the position of the separation band (annular band 31) remains as it is, which may make it difficult to visually recognize the initial opening.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cap in which traces of initial opening or attempts to open the cap can be easily visually recognized.

In order to solve the above problems, a cap according to a first invention includes an inner plug attached to the mouth of a container,
an upper lid detachable from the inner plug,
The upper lid has a separation band at its lower end that separates at the initial opening,
The separation band has a projection projecting toward the inner plug,
The inner plug has a receiving portion positioned below the projection of the separation band before being initially unsealed,
The receiving portion receives the protruding portion of the separation band that has fallen due to separation during initial unsealing.

Further, the cap according to the second invention includes an inner plug attached to the mouth of the container,
an upper lid detachable from the inner plug,
The upper lid has a separation band at its lower end that separates at the initial opening,
The separation band has a thin portion at its lower portion.

Furthermore, a cap according to a third invention, wherein the separation band in the cap according to the second invention has a protrusion projecting toward the inner plug,
The inner plug has a receiving portion positioned below the projection of the separation band before being initially unsealed,
The receiving portion receives the protruding portion of the separation band that has fallen due to separation during initial unsealing.

In addition, the cap according to a fourth aspect of the invention has a claw portion positioned at the height of the protrusion of the separation band before the inner plug in the cap according to the first or third aspect of the invention is initially unsealed,
The claw portion engages with the protrusion of the separation band when the top cover is initially opened.

A cap according to a fifth invention is the cap according to any one of the first, second, or fourth inventions, wherein the mouth portion of the container has an outer peripheral ring protruding toward the outer periphery,
The receiving portion of the inner plug has a distance of less than 1.0 mm from the outer peripheral ring.

According to the cap, when the initial opening is attempted, the initial opening or traces of the attempt can be easily visually recognized.

FIG. 2 is an exploded perspective view of a state where the cap according to Embodiment 1 of the present invention is attached to the container; It is a longitudinal cross-sectional view before the cap is attached to the container and is initially unsealed. It is a longitudinal cross-sectional view after the cap is attached to the container and the container is initially unsealed. FIG. 3 is a perspective view corresponding to FIG. 2; FIG. 4 is a perspective view corresponding to FIG. 3; FIG. 10 is a vertical cross-sectional view before the cap according to Embodiment 2 of the present invention is attached to the container and is initially unsealed. FIG. 10 is a vertical cross-sectional view of a cap according to another embodiment before being attached to a container and being initially unsealed; It is the perspective view which removed the upper cover from the state corresponded to FIG.

Hereinafter, caps according to Embodiments 1 and 2 of the present invention will be described based on the drawings.
[Embodiment 1]

As shown in FIG. 1, a cap 1 according to Embodiment 1 of the present invention includes an inner plug 2 attached to a mouth portion M of a container, and an upper lid 3 detachable from the inner plug 2 . FIG. 1 is an exploded view showing a mouth portion M of a container, an inner plug 2 before being attached to the mouth portion M, and an upper lid 3 before being attached to the mouth portion M. FIG. On the other hand, FIG. 2 is a diagram showing a state in which the inner plug 2 is attached to the mouth portion M of the container and the upper lid 3 is attached to the inner plug 2 . The inner plug 2 is not particularly limited as long as it has a structure to be attached to the mouth portion M of the container. As an example, as shown in FIG. and configured to sandwich from the inside. The upper lid 3 may be configured to be detachable from the mouth portion M of the container. Even with this configuration, the inner plug 2 is attached to the mouth portion M of the container, and as a result, it can be said that the upper lid 3 can be attached to and detached from the inner plug 2 . In addition, below, the example which the said top lid 3 can attach or detach by screwing with respect to the inner plug 2 is shown.

To explain the above example in detail, as shown in FIG. It has a holding tube 22 formed downward from the pedestal 20 on the inner side, and a pouring tube 23 formed upward from the inner edge of the pedestal 20 . A space 25 is formed between the holding cylinder 22 and the skirt portion 21 to sandwich the mouth portion M of the container. An outer peripheral threaded portion 29 is formed on the outer periphery of the pouring tube 23 . On the other hand, the upper lid 3 includes a top plate portion 30, a side wall portion 31 formed downward from the outer edge of the top plate portion 30, and a threaded tube formed downward from the top plate portion 30 inside the side wall portion 31. 32 and a sealing cylinder 33 formed below the top plate portion 30 inside the threaded cylinder 32 . The threaded tube 32 has an inner threaded portion 39 formed on its inner periphery to be threadedly engaged with the outer threaded portion 29 of the pouring tube 23 . The sealing tube 33 is inserted into the pouring tube 23 of the inner plug 2 while being in contact with the pouring tube 23 , thereby sealing the pouring tube 23 together with the top plate portion 30 .

As shown in FIGS. 1 and 2, the upper lid 3 has a separation band 41 at its lower end that separates upon initial opening. The separation band 41 is not particularly limited as long as it can be separated from other than the separation band 41 of the upper lid 3 by the initial unsealing. and the bridge 42 . The bridge 42 is configured to break upon initial opening. Of course, the bridge 42 is only an example, and any other means such as a weakened line for separation may be used as long as the separation band 41 is separated by initial unsealing. Moreover, the separation band 41 has a protrusion 43 protruding toward the inner plug 2 . The projecting portion 43 is, for example, a plurality of flaps 43 intermittently provided on the inner peripheral surface of the lower end portion of the side wall portion 31 . All of the flaps 43 are preferably arranged above the middle of the separation band 41 in the vertical direction, and more preferably below the upper end of the separation band 41 .

The inner plug 2 has a receiving portion 26 located below the protrusion 43 of the separation band 41 before being unsealed at the initial stage. As shown in FIG. 2, the receiving portion 26 does not receive the protrusion 43 of the separation band 41 unless the separation band 41 is separated, but as shown in FIG. is separated, that is, when the separation band 41 falls due to separation, the protrusion 43 of the separation band 41 is received. The receiving portion 26 is, for example, a flange projecting outward from the lower end of the skirt portion 21 .

The inner plug 2 preferably has a claw portion 27 positioned at the height of the protrusion 43 of the separation band 41 before being unsealed at the initial stage. As shown in FIG. 1 , as an example, a plurality of claw portions 27 are intermittently provided on the outer peripheral surface of the skirt portion 21 . The claw portion 27 engages with the protrusion 43 of the separation band 41 when the upper lid 3 is initially unsealed. For this reason, the claw portion 27 has a precipice wall 27c at the end portion in the opposite direction (for example, clockwise direction) to the rotational direction D (for example, counterclockwise direction) in which the upper lid 3 is initially unsealed. When the upper lid 3 is rotated in the rotation direction D for initial opening, the cliff face 27c contacts and engages with the end of the protrusion 43 in the rotation direction D. As shown in FIG. That is, when the upper lid 3 is rotated in the rotational direction D for initial opening, the protrusion 43 of the upper lid 3 engages with the claw 27 of the inner plug 2, thereby separating the separation band 41 provided with the protrusion 43. does not rotate, but the portion of the upper lid 3 other than the separation band 41 tries to rotate, so the bridge 42 at the boundary between the separation band 41 and the portion other than the separation band 41 breaks. Of course, the claw portion 27 described above is merely an example, and the separation band 41 may be separated at the initial opening by means other than the claw portion 27 . By the way, the claw portion 27 does not have the precipice wall 27c at the end in the rotation direction D (for example, the counterclockwise direction) for initial opening of the upper lid 3, as an example. That is, the outer peripheral surface 27 o of the claw portion 27 is flush with the skirt portion 21 at the end portion in the rotational direction D. As shown in FIG. With this configuration, when the top lid 3 is rotated in a direction opposite to the rotation direction D for initial unsealing, that is, when the top lid 3 is rotated in the direction of screwing the top lid 3 to the inner plug 2, the projection 43 of the top lid 3 is opened. , does not engage with the claw portion 27 and climbs over the claw portion 27 .

The mouth portion M of the container is not particularly limited as long as it has a shape to which the inner plug 2 is attached, but may have an outer peripheral ring R protruding toward the outer periphery. When the mouth portion M of the container has an outer peripheral ring R, as shown in FIG. 2, the receiving portion 26 of the inner plug 2 has a gap g between the outer peripheral ring R and less than 1.0 mm. is preferred, and less than 0.6 mm is more preferred. Generally, when opening the cap 1 illegally by mischief or the like, a slotted screwdriver is inserted into the gap g between the cap 1 and the outer ring R. Here, since the thinnest blade thickness of the flat-blade screwdriver is 0.6 mm, if the gap g is less than 1.0 mm and 0.6 mm or more, it is difficult to insert the flat-blade screwdriver into the gap g. This is because if the gap g is less than 0.6 mm, it is physically impossible to insert a flat-blade screwdriver into the gap g.

A method for manufacturing and using the cap 1 will be described below.

First, when the cap 1 is made of synthetic resin, the inner plug 2 and the upper lid 3 shown in FIG. 1 are each formed by injection molding. Then, the inner peripheral threaded portion 39 formed on the screwed tube 32 of the upper lid 3 is screwed into the outer peripheral threaded portion 29 formed on the pouring tube 23 of the inner plug 2 . During this screwing, the projection 43 of the separation band 41 climbs over the claw 27 of the inner plug 2, so that the projection 43 does not engage with the claw 27, so that the separation band 41 is not separated. The upper lid 3 is attached to the inner plug 2 by the screwing.

Next, the inner stopper 2 of the cap 1 is attached to the mouth portion M of the container filled with the content (liquid etc.) by, for example, a stopper. By this stoppering, the mouth M of the container is inserted into the space 25 between the skirt portion 21 and the holding cylinder 22 shown in FIG. Then, the contents enclosed in the container and the cap 1 are sold at stores and the like. When the container and the cap 1 placed in a store or the like are freely picked up by a visitor, there is a possibility that the cap 1 may be illegally opened at the initial stage by means of mischief or the like.

If the unauthorized initial opening of the cap 1 is to rotate the upper lid 3 with respect to the inner plug 2, that is, if it is the same as normal opening, the separation band 41 is separated from the cap 1 in the state shown in FIGS. Then, it falls by its own weight, and the cap 1 in the state shown in FIGS. 3 and 5 is obtained. In the cap 1 in this state, as shown in FIG. and the upper lid 3 other than the separation band 41, an appropriate gap is generated. Therefore, as shown in FIG. 5, the inner plug 2 can be seen through the appropriate gap, which facilitates visual confirmation of initial opening or attempted opening.

On the other hand, if the unauthorized initial opening of the cap 1 is to insert a flat-blade screwdriver into the gap g between the cap 1 and the outer ring R to force open the cap 1, the flat-blade screwdriver is used to break the separation band 41 or It hits the portion of the cap 1 in the vicinity thereof and damages it. This damage facilitates the visibility of initial or attempted opening. In particular, if it is difficult or physically impossible to insert a flat-blade screwdriver into the gap g, such as when the gap g is less than 1.0 mm, repeatedly try to insert the flat-blade screwdriver into the gap g. become. As a result, since the flat-head screwdriver inflicts many scratches on the separation band 41 and the cap 1 in the vicinity thereof, it becomes easy to visually recognize traces of initial opening or attempts to do so due to these scratches. If the bridge 42 breaks when the minus driver hits the separation band 41 and applies a load, the separation band 41 will separate. In particular, if it is difficult or physically impossible to insert a flat-blade screwdriver into the gap g, such as when the gap g is less than 1.0 mm, repeatedly try to insert the flat-blade screwdriver into the gap g. become. As a result, many minus drivers hit the separation band 41 and apply a load, so that the separation band 41 is easily separated. When the separation band 41 separates, as shown in FIG. 5, the inner plug 2 can be seen through an appropriate gap between the separation band 41 and the upper lid 3 other than the separation band 41, as in normal opening. Easier to see traces of initial opening or attempted opening.

Thus, according to the cap 1, when the initial opening is attempted, the inner plug 2 can be seen through an appropriate gap formed between the separation band 41 and the upper lid 3 other than the separation band 41, so that the initial opening or the initial opening can be prevented. Traces of attempts are easily visible.
[Embodiment 2]

A cap 1 according to Embodiment 2 of the present invention will be described below with reference to FIG. The second embodiment will be described with a focus on the configuration different from that of the first embodiment, and the same reference numerals will be assigned to the same configurations as those of the first embodiment, and the description thereof will be omitted.

As shown in FIG. 6, the separation band 41 of the upper lid 3 of this cap 1 has a thin portion 44 at its lower portion. That is, the separation band 41 has a lower portion thinner than the other portions. In addition, the lower part of the separation band 41 , that is, at least the lower part than the middle of the separation band 41 in the vertical direction may be formed thinner. It is preferably positioned lower than Further, the thinned portion 44 is preferably thinner than the bridge 42 or the separating line of weakness. The thin portion 44 is not limited to being formed to the lower end of the separation band 41. In other words, the lower end of the separation band 41 may not be thin.

If the unauthorized initial opening of the cap 1 is the same as normal opening, that is, rotating the upper lid 3 with respect to the inner plug 2, the cap 1 according to the second embodiment of the present invention is the same as the first embodiment. works the same as On the other hand, if the unauthorized initial opening of the cap 1 according to the second embodiment of the present invention is to insert a flat-blade screwdriver into the gap g between the cap 1 and the outer ring R to force the cap 1 open. , the minus driver hits the separation band 41 and applies a load. This load causes the thin portion 44 of the separation band 41 to break. In particular, if the thinned portion 44 is thinner than the bridge 42 or the separation weakening line, the thinned portion 44 will break prior to breaking the bridge 42 or the separation weakening line. If the thin portion 44 is broken, it becomes easy to visually recognize traces of an attempt to unseal the package in the initial stage.

As described above, according to the cap 1 according to the second embodiment of the present invention, when an attempt is made to initially open the cap 1 by prying it open with a flat-blade screwdriver, the thin portion 44 of the separation band 41 is broken. Traces of attempted opening are readily visible.

By the way, in Embodiments 1 and 2, the mouth portion M of the container has the outer peripheral ring R, but the outer peripheral ring R may not be provided. In the first place, since the dropped separation band 41 is received by the receiving portion 26, it does not drop all the way to the outer peripheral ring R below the receiving portion 26. - 特許庁Furthermore, even if the mouth portion M of the container does not have the outer peripheral ring R, if the cap 1 is to be pried open with a flathead screwdriver, the flathead screwdriver will hit the separation band 41 and apply a load. Therefore, the presence or absence of the outer peripheral ring R does not affect the operational effects of the cap 1 .

Moreover, although not described in detail in the first and second embodiments, it is preferable that the cap 1 can be easily separated from the container when the container to which the cap 1 is attached is discarded. As shown in FIGS. 7 and 8 as an example, such a cap 1 has a sorting weakening line in which the inner plug 2 is partially (not entirely) formed on the skirt portion 21 along the circumferential direction. 10 and a knob 11 continuing from the weakened line 10 for sorting. By pulling the knob 11 along the circumferential direction of the skirt portion 21, the separation weakening line 10 is broken, thereby partially dividing the skirt portion 21 vertically. This division weakens the pinching of the inner plug 2 in the mouth portion M of the container, so that the inner plug 2 can be easily removed from the mouth portion M of the container. Even if the sorting weakening line 10 is broken, the inner plug 2 is not completely divided into two, that is, the inner plug 2 is one piece, so that by pulling up the pulled knob 11, the inner plug 2 can be pulled up. The plug 2 is easily removed from the mouth portion M of the container and separated.

Furthermore, in Embodiments 1 and 2, the flap 43 was described as an example of the protrusion 43, and the shape of the flap 43 was not described in detail. preferably has a shape directed upward and inward from the inner peripheral surface of the separation band 41 . With this shape, each flap 43 reliably engages with the pawl portion 27 when the upper lid 3 is rotated in the rotational direction D for initial opening, and reliably engages with the pawl portion 27 when rotated in the direction opposite to the rotational direction D. because you will get over it.

In addition, in Embodiments 1 and 2, the inner peripheral threaded portion 39 of the threaded tube 32 of the upper lid 3 and the outer peripheral threaded portion 29 of the spout tube 23 of the inner plug 2 are screwed together. However, other parts of the upper lid 3 and other parts of the inner plug 2 may be screwed together, or the upper lid 3 and the mouth portion M of the container may be screwed together. good too. Further, the attachment of the inner plug 2 attached to the mouth portion M of the container and the upper lid 3 is not limited to screwing, and other modes such as engagement may be used.

In addition, in the first and second embodiments, the tool for prying open the cap 1 is described as a flathead screwdriver, but this is only an example, and other tools such as an elongated tool with a sharp tip may be used.

Further, in the first and second embodiments, the separating band 41 is illustrated as being completely separated along the entire circumference, but it may be partially separated and dropped instead of being separated along the entire circumference. Of course, it is preferable to have a separation band 41 that separates completely around the circumference in order to facilitate viewing of the initial opening or attempted opening.

Further, in the first and second embodiments, the upper lid 3 is attached to the inner plug 2, and then the inner plug 2 is attached to the mouth M of the container. The upper lid 3 may be attached to the inner plug 2 after attachment.

Further, in the first and second embodiments, the operation for initially opening the top lid 3 is described as rotating the top lid 3 in the rotational direction D (for example, counterclockwise direction), but the operation is limited to this. Instead, the action of opening the upper lid 3 in the initial stage may be performed. Even if this operation is other than the rotation of the upper lid 3 in the rotation direction D, the claws 27 engage with the projections 43 of the separation band 41 due to this operation, so that the upper lid 3 other than the separation band 41 is moved by the operation. Although it follows, the isolation band 41 does not follow the movement, so the isolation band 41 separates.

Moreover, the first and second embodiments are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims. Of the configurations described in the first and second embodiments, the configuration other than the configuration described as the first or second invention in "Means for Solving the Problems" is an arbitrary configuration, and can be deleted and changed as appropriate. It is possible.

M Container Mouth R Peripheral Ring g Spacing D Direction of Rotation 1 Cap 2 Inner Plug 3 Top Lid 10 Separation Weakening Line 11 Knob 20 Base 21 Skirt 23 Dispensing Tube 26 Receptacle 27 Claw 29 Peripheral Threaded Part 30 Top Plate Part 31 Side wall part 32 Threaded cylinder 39 Inner peripheral threaded part 41 Separation band 42 Bridge 43 Protrusion 44 Thin part

Claims (5)

an inner plug attached to the mouth of the container;
an upper lid detachable from the inner plug,
The upper lid has a separation band at its lower end that separates at the initial opening,
The separation band has a projection projecting toward the inner plug,
The inner plug has a receiving portion positioned below the projection of the separation band before being initially unsealed,
The cap is characterized in that the receiving portion receives a protrusion of the separation band that has fallen due to separation during initial unsealing. an inner plug attached to the mouth of the container;
an upper lid detachable from the inner plug,
The upper lid has a separation band at its lower end that separates at the initial opening,
A cap, wherein the separating band has a thin portion at its lower portion. The separation band has a projection projecting toward the inner plug,
The inner plug has a receiving portion positioned below the projection of the separation band before being initially unsealed,
3. The cap according to claim 2, wherein the receiving portion receives a protrusion of the separation band that has fallen due to separation during initial unsealing. The inner plug has a claw portion positioned at the height of the protrusion of the separation band before being initially unsealed,
4. The cap according to claim 1, wherein the claw portion engages with the protrusion of the separation band when the upper lid is initially opened. The mouth of the container has an outer ring protruding toward the outer circumference,
5. The cap according to claim 1, 3 or 4, wherein the receiving portion of the inner plug has a distance of less than 1.0 mm from the outer peripheral ring.

Images