JP2004001828A - Tamper-evident cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable easy and quick separate collection of a tamper-evident cap by easily removing a ring for determining whether the cap is unsealed from a bottle body. <P>SOLUTION: The tamper-evident cap is constituted of a cap body 1 having a thread 3 to be screwed with a spiral thread 13 on the outer peripheral surface of a mouth tube 12 of the bottle body 11 and the ring 7 for determining whether the cap is unsealed, which is coupled with the lower end of a peripheral tube 2 via a plurality of breakable connecting pieces 5 and a relatively rigid single coupling piece 6. The piece 6 is equipped at the upper end in the vicinity of the side for unscrewing the coupling piece 6 with a breakable thin groove-like weak part 8 and a plurality of locking claws 9 for locking from downward with a locking protrusion 14 on the outer peripheral surface of the mouth tube 12 of the bottle body 11 on the inner peripheral surface part except the vicinity of the side for screwing the piece 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a tamper-evident cap having a pill fur proof function and capable of easily separating and collecting.
[0002]
[Prior art]
As a cap having a so-called pill fur proof function, the cap is screwed to the lower end of the cap body screwed to the outer periphery of the mouthpiece of the bottle main body, and is locked through a plurality of thin connecting pieces to the locking ridge on the outer circumference of the mouthpiece so as not to come out. The ring was configured to be connected, and the connection piece was broken by unscrewing operation of the cap at the time of opening, and separated into the ring remaining at the lower part of the mouthpiece and the cap body to be unscrewed, whereby the cap was opened. A tamper-evident cap, which allows the user to discriminate between the two, is widely used.
[0003]
[Problems to be solved by the invention]
By the way, from the viewpoint of waste recycling, if this type of cap and the bottle body are made of different materials, it is necessary to remove the ring from the bottle body and separate and collect it. Since the ring remains in the lower part of the bottle body of the bottle in a state where the ring cannot easily come out due to the locking ridge, there is a problem that the ring cannot be easily removed from the bottle body for sorting and collecting. .
[0004]
Therefore, the present invention has been made in order to solve the above-mentioned problems in the prior art, and has a technical problem of making it possible to easily remove a ring for opening determination from a bottle main body. An object of the present invention is to enable easy and quick separation and collection of a tamper-evident cap.
[0005]
[Means for Solving the Problems]
In the present invention for solving the above technical problems, the means of the invention described in claim 1 is:
On the inner peripheral surface of the peripheral cylinder, having a cap body engraved with a screw thread to be screwed with the spiral thread on the outer peripheral surface of the mouthpiece of the bottle main body,
It is connected to the lower end of the peripheral cylinder of the cap body via a plurality of breakable connection pieces and one relatively strong connection piece, and is breakable at the upper end near the unscrew direction side of this connection piece. A plurality of locks are provided on the inner peripheral surface portion of the connecting piece except for the portion in the vicinity of the screwing direction, and from below on the locking ridges on the outer peripheral surface of the mouthpiece of the bottle body, in addition to providing a thin groove-shaped weakened portion. Having a ring for opening determination in which a claw piece is provided in a circumferential direction,
It is in.
[0006]
When opening the cap, when the cap is unscrewed and rotated, the cap body is rotated and displaced, whereas the ring is stopped by the locking claw pieces being locked by the locking ridges of the bottle body. Of the members connecting the two, the connection pieces that are easily broken are broken.
[0007]
On the other hand, since the connecting piece is relatively strong and there is no locking claw near the connecting piece, the force applied to the connecting piece is relatively small. In order to pull up the connecting portion of, the weakened portion in the vicinity thereof is broken (see FIG. 5).
[0008]
Then, if the cap body is unscrewed as it is, the ring is easily detached from the bottle body in the state of being connected by the connecting piece, so that no special operation is required to remove the ring, and the cap is separated and collected. It can be done easily.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, a plurality of locking claw pieces are disposed so as to be in a state of close to rough in the unscrewing direction from near the unscrewing direction side of the weakened portion. It is the thing which added.
[0010]
According to the second aspect of the present invention, when the cap is unscrewed and unsealed, the force applied to the connecting piece by the locking of the locking claw piece can be further reduced, thereby reliably preventing the breaking of the connecting piece. can do.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The cap body 1 has a thread 3 screwed into a spiral thread 13 formed on the outer peripheral surface of the mouthpiece 12 of the bottle body 11 on the inner peripheral surface of the peripheral cylinder 2. A plurality of locking pieces 4 having a vertical locking surface on the screwing direction side are protrudingly provided on the lower end surface of 2.
[0012]
The opening determination ring 7 is connected to the lower part of the peripheral cylinder 2 through a plurality of breakable thin connection pieces 5 and one relatively thick and strong connection piece 6. At the upper end of the piece 6 in the vicinity of the unthreading direction side, a breakable thin groove-shaped weakened portion 8 is formed in the entire width direction of the ring wall, and a predetermined range of the inner peripheral surface of the bottle body 11 is provided. A plurality of locking claw pieces 9 that lock from below are provided integrally with locking protrusions 14 provided around the lower part of the outer peripheral surface of the barrel 12.
[0013]
The locking claw piece 9 is provided on the inner peripheral surface of the ring near the screwing side of the connecting piece 6, for example, such that a force that breaks the connecting piece 6 is not applied to the ring 7 at the time of opening the cap by unscrewing. As shown in FIG. 3, it is preferable that the locking claw piece 9 is not provided at a portion of about 1/6 to 1/4 of the inner circumferential length from the weakening portion 8 toward the screwing direction, and for the same reason. It is preferable that the weakened portion 8 is provided so as to be in a direction from a dense state to a rough state in the direction near the unscrewing direction.
[0014]
In addition, a stopper piece 10 that abuts and locks the locking surface of the cap body 1 on the screwing direction side of the locking piece 4 protrudes from the upper end face of the ring wall. When the cap is screwed into the mouthpiece 12 of the bottle body 11, the connection piece 5 is prevented from being broken.
[0015]
In the illustrated embodiment, the weakened portion 8 formed over the entire width of the ring wall of the ring 7 is formed by cutting off the remaining portion with a thin breakable portion remaining at the upper end of the ring 7. Although the chipped structure has a structure that can be easily broken, the entire weakened portion 8 may be formed of a thin part that can be broken.
[0016]
【The invention's effect】
The present invention has the above-described configuration, and has the following effects.
According to the first aspect of the present invention, when the cap is unscrewed and unsealed, the connecting piece connecting the cap body and the ring for discriminating opening and the weakened portion of the ring are broken, but the connecting piece is Since it is not broken, if the cap body is unscrewed as it is, the ring can be easily detached from the bottle body bottle in the state of being connected by the connecting piece, so no special operation is required to remove the ring. The tamper-proof cap can be easily and quickly separated and collected.
[0017]
According to the second aspect of the invention, when the cap is unscrewed and unsealed, the force applied to the connecting piece by the locking of the locking claw with the locking ridge can be further reduced, thereby breaking the connecting piece. Can be reliably prevented.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing one embodiment of the present invention.
FIG. 2 is a semi-longitudinal sectional view of the embodiment shown in FIG.
FIG. 3 is an overall plan view of a ring portion taken along line AA in FIG. 2;
FIG. 4 is an enlarged perspective view of a main part of the embodiment shown in FIG. 1;
FIG. 5 is an enlarged perspective view of a main part of the embodiment shown in FIG. 1, showing a state in which a cap is removed.
[Explanation of symbols]
Reference Signs List 1: cap body 2; peripheral cylinder 3; thread 4; locking piece 5; connecting piece 6; connecting piece 7; ring 8; weakening portion 9; locking claw piece 10; stopper piece 11; bottle body 12; 13; spiral ridge 14; locking ridge

Claims (2)

A cap body (1) having a thread (3) engraved on the inner peripheral surface of the peripheral cylinder (2) with a spiral thread (13) on the outer peripheral surface of the mouthpiece (12) of the bottle body (11); The lower end of the peripheral cylinder (2) is connected via a plurality of breakable connection pieces (5) and one relatively strong connection piece (6), and the screw of the connection piece (6) is screwed. A thin groove-shaped weakened portion (8) that can be broken is provided at the upper end near the detaching side, and the bottle body (11) is provided on the inner peripheral surface of the connecting piece (6) except for the portion near the screwing direction. And a ring (7) for judging the opening in which a plurality of locking claw pieces (9) for locking from below are locked to the locking projections (14) on the outer peripheral surface of the mouthpiece (12). Tamper resistant cap. The tamper-evident protection cap according to claim 1, wherein the plurality of locking claw pieces (9) are disposed so as to be in a state of close to coarse in the unscrewing direction from near the unscrewing direction of the weakened portion (8).

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