JPS5942341Y2 - Container with tamper-evident inner stopper - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combination structure of a synthetic resin container neck and an inner stopper fitted with a synthetic resin inner stopper provided with a structure for preventing tampering.

Containers for cosmetics and the like are required to be easily tampered with.

In response to this, some containers are equipped with a tamper-proof structure for the inner stopper, but these containers have a complicated structure and require many steps to manufacture the container, or the inner stopper may be removed after opening. A structure in which the skirt part remains at the mouth of the container may cause discomfort to the user, and a structure in which the inner stopper is removed from the mouth of the container may make it difficult to remove the inner stopper when the neck is a small diameter container. However, the disadvantage is that the sealing of the casing becomes defective and the quality of the contents deteriorates.

The structure of the present invention is simple, and the structure of the inner stopper makes it easy to detect tampering, while the inner stopper can be easily removed from the mouth of the container when opening the container, even if the container has a small diameter neck.
Thus, the present invention provides a container with a tamper-proof inner stopper that is well-sealed and tamper-proof.

1, 2, and 3 are a front view, a rear view, and a plan view of the inner stopper A according to the present invention.

Referring to the drawing, the inner stopper A has a top plate part 1, has an upper skirt part 2 which is concentric with the top plate part 1 and hangs down from the top plate part 1 with a diameter smaller than the diameter of the top plate part, and has an outer part. It has a lower skirt portion 3 with a curved surface 31 that tapers into a funnel shape through a step portion 21 that slightly overhangs.

The upper skirt part 2 has a connecting part 22 which has a width in the circumferential direction of the upper skirt part from the joint with the top plate part 1 and has a width that does not break due to the opening force, and a connecting part 22 which has a width that does not break easily due to the opening force. Fenestration 2 for forming a plurality of columns 23 having a narrow width
There are 4.

The columns 23 and the fenestrations 24 are provided alternately, and in this embodiment, four columns 23 and five fenestrations 24 are provided.

The presence or absence of unauthorized opening can be determined by the presence or absence of breakage of the column 23.

In addition, on the top plate part 1, on the opposite side to the side where the connecting part 22 is located,
A tongue piece 11 is provided on the outer peripheral side wall 12 of the top plate part 1 and projects horizontally and outward.

This tongue piece 11 makes it easy to raise the top plate part 1 of the inner stopper A, and also indicates a place where the column 23 is easily broken.

FIG. 4 is a partial sectional view of the side surface of the container showing a state in which the inner stopper A is inserted into the container neck 4 and the cap 5 is screwed on.

Referring to FIG. 4, the cap 5 has a top 52, a side wall 53 depending from the top 52, and a screw 51 on the inside of the side wall 53 for screwing into the screw 41 of the container neck 4.

The container neck 4 has a screw 41 on the side wall and a flange 42 on the top 46 that projects inwardly and horizontally.

When the inner stopper A is inserted into the container neck 4, the top plate part 1 of the inner stopper A
The lower surface 13 is in close contact with the upper surface 43 of the flange 42, the upper skirt portion 2 is in close contact with the end surface 44 of the flange 42, and the lower surface 45 of the flange 42 is engaged with the stepped portion 21 of the inner plug A, so that the inner plug is closed. A fits into the neck 4.

When the inner stopper A is fitted into the container neck 4 in this manner and the cap 5 is then screwed onto the container neck 4, the upper surface 1 of the top plate 1
4 is in close contact with the lower surface of the top 52 of the cap 5, resulting in a complete seal.

FIG. 5 is a sectional view showing the state when the inner stopper A is removed from the container neck 4, and shows the state in which the tongue piece 11 of the inner stopper A is pulled up in the direction of arrow B in the drawing and the column 23 is broken. FIG.

Referring to the drawing, when the tongue piece 11 is further pulled up in the direction of arrow B, the top plate part 1° rotates using the edge opposite to the tongue piece 11 as a fulcrum, and acts as a lever against the connecting part 22. work.

First, the lower surface of the flange 42 and the stepped part 21 of the skirt part of the inner stopper are easily unlatched on the side where the connecting part 22 is located, and the connecting part 22 side rises, and the whole skirt part 7 is pulled by this. will rise.

In this way, the entire skirt portion can be easily extracted from the neck.

The above-mentioned container structure of the present invention is particularly effective when applied to a container having a small diameter neck, more specifically, a container having a narrow width W of the flange of the container neck shown in FIG.

Similar to the present invention, conventional containers with a tamper-proof inner stopper that have a structure in which the inner stopper is removed from the mouth of the container can be cut into a thick connecting part extending from the periphery of the top plate of the inner stopper and a thin wall. This inner stopper has a structure in which a ring-shaped knob is provided through a piece, and is structured to be locked inside the container neck like the inner stopper of the present invention.

In this container, the sealing of the container is mainly ensured by pressure contact between the lower surface of the top plate of the inner stopper and the upper surface of the flange of the neck, so when the dimension W in FIG. The width of the ring-shaped knob becomes narrow, making it difficult to open the container, and conversely, if the width of the ring-shaped knob is made wide enough to allow opening, there is a drawback that the sealing of the container becomes unsatisfactory.

On the other hand, the inner stopper of the present invention, as shown in the above embodiment, has a connection part and a pillar in the upper skirt part near the root of the inner stopper. Since the top plate portion is a single plate, even if the W dimension is small, the entire W dimension can be used as a sealing surface, and the seal can be reliably sealed.

FIG. 6 is a sectional view of the inner plug A' in another embodiment,
In this example, a bottom plate 6' is provided at the lower end of the lower skirt part 3' to provide higher sealing, and a bottom plate 6' is provided at the center of the top plate part 1' so that a mold can be inserted when manufacturing the inner plug A'. A hole 6 for inserting the mold is provided.

According to the tamper-proof container with an inner stopper of the present invention, the top plate part 1 and the upper skirt part 2 of the inner stopper are attached to the upper skirt part 2 near the root.
The connecting part 22 has a width that will not break with the opening force, and the plurality of pillars 23 will break with the opening force, so even if the neck is a small diameter container, it can be sealed between the top plate and the flange. When lifting the one-piece top plate so that the connecting part 22 side serves as a fulcrum, the inner stopper on the connecting part side and the mouth and neck part are unlatched by lever action. This has the effect that the inner stopper can be easily removed from the mouth and neck compared to conventional inner stoppers that have a ring-shaped knob.

[Brief explanation of drawings]

Fig. 1 is a front view of the inner stopper A of the present invention, Fig. 2 is a rear view of the inner stopper A, Fig. 3 is a plan view of the inner stopper A, and Fig. 4 is a side view showing the sealed state of the container of the present invention. FIG. 5 is a sectional view of the inner stopper A in a state in which it is removed, FIG. 6 is a cross-sectional view of the inner stopper A' in another embodiment, and FIG. 7 is a cross-sectional view of the inner stopper A' in another embodiment. It is a sectional view of the devised container. 1: Top plate part, 11: Tongue piece, 12: Outer peripheral side wall of top plate part, 1
3: Lower surface of the top plate portion, 14: Upper surface of the top plate portion, 2: Upper skirt portion, 21: Step portion, 22: Connecting portion, 23: Column body, 24
: Fenestration, 3: Lower skirt, 31: Curved surface, 4: Container neck, 41: Screw, 42: Flange, 43: Upper surface of collar, 44
: end surface of the flange, 45: lower surface of the flange, 46: top of the container neck, 5: cap, 51: screw, 52: top of the cap,
53: Side wall of cap, 6: Hole, 6': Bottom plate, 7: Skirt part.

Claims (1)

[Claims for Utility Model Registration] A top plate portion 1, a skirt portion 7 that hangs down from the top plate portion 1 and has a smaller diameter than the top plate portion, and is connected to the upper skirt portion 2 via a stepped portion 21 that projects outward. and a lower skirt portion 3 having a larger diameter than the upper skirt portion 2.
A synthetic resin inner stopper having a skirt portion 7 consisting of a top portion 46 extending horizontally and inwardly and having a narrow flange 42 formed on the top surface 43 of the flange 42 of the container neck 4 and the inner stopper. The lower surface 13 of the top plate portion 10 of the top plate portion 10 faces the upper skirt portion 2, and the end surface 44 of the collar portion 42 faces the upper skirt portion 2, respectively, and the stepped portion 21 of the skirt portion T is engaged with the lower surface 45 of the collar portion 42. In a container made of synthetic resin, the connection between the top plate part 1 and the upper skirt part 2 of the inner stopper is such that the upper skirt part 2 near the root is connected to a connecting part 22 having a width that will not be broken by the opening force. A tamper-proof container with an inner stopper, characterized in that it is formed of a plurality of pillars 23 that are tamper-proof.