JPH0520689Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a so-called pilfer-proof cap, which allows the virgin sealing of a container to be visually confirmed and prevents unauthorized opening of the container. This invention relates to a type of cap that does not leave a portion of the cap on the container side even when the cap is opened.

[Conventional technology]

Conventional aluminum screw-type pilfer-proof caps have a horizontal score (cross-cut line) around the bottom of the cap, and the bottom edge of the cap, which is the part from the horizontal score to the bottom edge of the cap, has a horizontal score at the top. A plurality of vertical scores (vertical score lines) almost touching the score were provided at approximately equal intervals.

When the cap is rotated in the reverse screwing direction to open it, the lower end of the cap, which is bent and assembled around the protruding strip provided around the outer circumferential surface of the mouth tube,
It comes into contact with the lower end surface of the protruding strip. If the cap continued to rotate from this state, the vertical score would be cut by the tensile force acting on the lower end of the cap, which was the part that was wound tightly.

With this system, it was possible to confirm the virgin sealing performance of a container by visually checking whether the vertical score was broken.

[Problem that the invention attempts to solve]

However, in conventional pilfer-proof caps, even if the vertical score is broken, as shown in Japanese Utility Model Application Publication No. 10840/1984, the part that is deformed outward due to the breakage is pressed. When the seal is put back together, the broken line may become visible and cannot be visually observed, which poses a problem in that it is difficult to reliably confirm the virgin sealing property only by visual inspection.

Further, there was a problem in that the sharp edges of the portions that were deformed outward due to the breakage of the vertical score protruded outward to a large extent, and the protruding edges could injure fingertips and the like, resulting in poor safety.

Therefore, the present invention was devised to solve the above-mentioned problems in the conventional technology.
The purpose is to obtain high safety.

[Means for solving problems] This will be explained below with reference to the drawings.

The pilfer-proof cap according to this invention is
At the bottom of the aluminum screw cap 1, a plurality of long horizontal scores 3 and short horizontal scores 4 are arranged alternately in a horizontal line across the flat part 8, and between the short horizontal scores 4 and the lower end of the cap 1. , a plurality of vertical scores 5 are arranged in parallel to form a fracture portion 6.

That is, the long horizontal score 3 and the short horizontal score 4 cause the cap body 2 to
The lower end of the cap 1, which is divided into upper and lower sections, has a broken part 6 with a small width facing the short horizontal score 4 and a large broken part 7 with a large width facing the long horizontal score 3, alternately along the circumferential direction. The large broken portion 6 has both ends thereof connected to the cap body 2 via a flat portion 8.

[Effect]

Since the present invention has the above-described structure, when the cap 1 is opened, the vertical score 5 is broken, and the large broken part 7 connected to the cap body 2 at the flat part 8 moves the flat part 8 to the bending point. As a result, the container is deformed into an inclined position with its lower end protruding outward, and is released from the container.

When the cap 1 is opened, if all of the vertical scores 5 constituting the broken part 6 are completely broken, the broken part 6 will separate from the large broken part 7, and the separation of the broken part 6 will cause the cap to open. 1 clearly indicates that it has already been opened.

In addition, when a part of the vertical score 5 constituting the broken part 6 is broken, the broken part 6 is attached to the large broken part 7 on either the left or right side between the short horizontal score 4 and the upper end of the vertical score 5. They are connected only at a small portion and are attached in an extremely unstable state. For this reason, it is possible to push the large broken part 7 that is inclined outwardly back to the state before opening because the large broken part 7 is stably connected to the cap body 2 via the flat part 8. However, the fracture part 6 attached to this major fracture part 7
Since the connecting force to the large broken part 7 is extremely weak and unstable, it is impossible to push it back to the state before opening, and if you try to force it back,
The gap between the large fracture portion 7 is fractured and separated.

In this way, by visually observing the condition of the broken portion 6, it is possible to easily and accurately know whether the cap 1 has already been opened or not.

Since the broken part 6 is formed into a short horizontal score 4 by a plurality of vertical scores 5, the edge of the large broken part 7 is located close to the flat part 8, but this flat part 8 is not easily opened. Because it serves as a fulcrum for the deformation of the large fractured portion 7 at the time, the edge of the large fractured portion 7 does not protrude outward significantly.
This prevents the safety from being lowered due to the sharp edges of the large fractured portions 7 protruding outward to a large extent.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG.

The illustrated embodiment is an aluminum screw cap 1 that is assembled into a large bottle container for carbonated beverage liquid.
This is what is shown.

The long horizontal score 3 and the short horizontal score 4 that divide the cap 1 into the cap body 2 and the lower end have a slit hole structure, and a flat surface located between the long horizontal score 3 and the short horizontal score 4. The portion 8 forms a bridging portion that connects the cap body 2 and the lower end.

The broken part 6 is formed by a pair of vertical scores 5 provided near both ends of the short horizontal score 4, and therefore the width of the broken part 6 is slightly shorter than the short horizontal score 4. At the same time, the edge of the large fractured portion 7 will be extremely close to the flat portion 8.

Each vertical score 5 forming the fracture part 6
does not have a score (cut line) at its upper end (the connection with the short horizontal score 4) and at its lower end (the lower edge of the lower end of cap 1), and no score is provided at the lower end. Therefore, a certain amount of force is required to open the cap 1, and the vertical score 5 is prevented from being tampered with when the cap 1 is processed. It is designed to give a good outward rebound action to the ball. In addition, by not providing a score on the upper end, it is possible to connect the broken part 6 to the large broken part 7 with an extremely weak connection force after the cap 1 is opened, so that when the cap 1 is opened, , broken part 6
This is to reduce the chance of the objects separating and scattering.

The large broken portion 7 has flat portions 8 at both ends thereof.
Since it is connected to the cap body 2 at
It is achieved stably with a constant shape that constantly reduces its degree of curvature.

In this way, the outward deformation of the large fractured portion 7 reduces its degree of curvature, and since the distance between the edge of the large fractured portion 7 and the flat portion 8 is extremely short, the large fractured portion 7 The outward protrusion of the edge of the large fractured portion 7 during outward deformation is extremely small.

Furthermore, although the degree of outward protrusion of the fractured portion 6 attached to the edge of the large fractured portion 7 is by no means large, it still protrudes in an extremely unstable state. , Therefore, just by glancing at this state, it is possible to know that the cap 1 has already been opened.

[Effect of idea]

Since the present invention has the above-described configuration, it is possible to easily and accurately confirm the virgin sealing properties of the container by visual inspection alone, effectively preventing unauthorized opening of the container, and preventing the contents from being damaged. This effectively works to ensure the safety of the cap, and it also exhibits excellent effects such as ensuring relatively high safety of the cap after opening.

[Brief explanation of the drawing]

FIG. 1 is an overall front view showing an embodiment of the present invention. Explanation of the sign, 1...Cap, 2...Cap body, 3...Long horizontal score, 4...
Short horizontal score, 5... Vertical score, 6... Broken part, 7... Most broken part, 8...
...flat area.

Claims (1)

[Scope of utility model registration request] At the bottom of the aluminum screw cap, a plurality of long horizontal scores and short horizontal scores are arranged side by side alternately in a horizontal line across the flat part, and a plurality of vertical scores are arranged between the short horizontal scores and the lower end of the cap. A pilfer-proof cap that is arranged side by side to form a broken part.