Plastic bottle opening / closing cap

Abstract

Regarding the lid of a plastic bottle, we provide a lid that allows users to determine at a glance whether the bottle is partially opened or unopened based on its open / closed state. [Solution] The opening and closing lid 3 of the PET bottle 2 is configured such that, before opening, the lid body engages with the opening base 1B of the PET bottle with a base ring 4 that engages with the opening threaded portion 1A of the PET bottle, and the lid body which screws and closes the opening of the PET bottle integrally with this base ring. Several engaging pieces K are attached to the circumference of the ring edge where the base ring and the opening threaded portion face each other before opening, and at the time of engagement, a matching groove or colored line is attached as a bridge between the opening and closing lid and the base ring. After opening the opening and closing lid, the degree to which the opening and closing lid is tightened or not can be visually detected by the alignment or misalignment of the groove line or colored line on the base ring that faces the opening and closing lid when it is screwed onto the opening of the PET bottle.

Description

Technical Field

[0001] The present invention relates to an opening / closing lid of a plastic bottle, for example, and enables one to visually determine the opening / closing state of the lid, that is, whether the bottle has been sipped from or not opened yet, and the tightening state of the lid, for an opening / closing lid of a plastic bottle.

Background Art

[0002] Conventionally, to check whether a plastic bottle has been sipped from or not, it has been generally checked based on the tightening state of the lid or the amount of water in the plastic bottle. Also, if a third party deliberately sips only a small amount, a large displacement in the water level in the bottle cannot be detected, and it is difficult to make such a judgment. Moreover, even if a third party plays a prank or has malicious intent and puts poison or drugs in it, it cannot be detected, and one may encounter physical discomfort or a fatal accident. There is a need for means to avoid the possibility of encountering such a situation.

[0003] The present invention is such that, in order not to be affected by the above situation, further, whether it is in the middle of sipping or has not been sipped yet can be more simply confirmed by, in addition to the opening / closing confirmation groove line provided at the opening of the cap "lid" and the plastic bottle body side. Furthermore, for the user, by accurately checking the degree of tightening between the cap "lid" and the plastic bottle opening, the quality of the tightening can be visually inspected. Thereby, it is possible to completely prevent a water leakage accident in the plastic bottle due to incomplete tightening of the lid, and conversely, it is possible to prevent the inability to open the bottle by a person with weak strength due to excessive tightening.

[0004] Incidentally, it can be presumed that there are no known patents or known utility models that have solved the above problems. Most of the technologies are such that there are many documents that facilitate the opening and closing of the lid even for a person with weak strength. For example, [Refer to Published Utility Model Document 1.][Refer to Published Utility Model Document 2.]

[0005]

Prior Art Documents

Patent Documents

[0006] [Patent Document 1] Japanese Utility Model Publication No. 54-126985 [Patent Document 2] Japanese Utility Model Publication No. 62-105979 [Overview of the project]

[0007] [Problems that the invention aims to solve]

[0008] Regarding the lids of the above-mentioned PET bottles, we have developed a new PET bottle opening confirmation lid that allows users to instantly determine the lid's open / closed state, i.e., whether it is partially opened or not, and furthermore, whether the lid is properly tightened. [Means for solving the problem]

[0009] In other words, in an opening and closing lid that screws onto the opening of a PET bottle, the opening and closing lid consists of a base ring that is non-rotatably engaged with the opening base of the PET bottle, and before the PET bottle is opened, several engaging pieces are engaged with the circumferential position of the ring edge facing the base ring and the opening and closing lid. In this engaged state, a groove or colored line is connected between the opening and closing lid and the base ring in a bridging manner. [Brief explanation of the drawing]

[0010] [Figure 1] An embodiment of the present invention is shown, along with a side view and a cross-sectional view of the opening lid of a PET bottle. [Figure 2] A diagram illustrating the relationship between the opening / closing cap and the main ring of a plastic bottle. [Figure 3] A diagram showing the relationship between the opening / closing lid and the main ring in terms of the degree of lid tightening. [Figure 4] A diagram showing the relationship between the opening / closing lid and the main ring in terms of the degree of lid tightening.

[0011] [Modes for carrying out the invention]

[0012] The opening and closing mechanism of the PET bottle lid of this invention will be explained below with reference to Figures 1 to 4. [Examples]

[0013] In Figures 1 and 2, a screw-on lid 3 is fitted onto the spout 1 at the top of the PET bottle 2. The structure of this lid 3 consists of a ring-shaped base ring 4 that rotatably engages with the opening threaded portion 1A of the spout 1 of the PET bottle 2, and a lid 3 that is integrally screwed onto the opening threaded portion 1A of the PET bottle via engaging pieces K to close the lid. When the lid 3 is opened, each engaging piece K breaks.

[0014] However, before the opening of the opening / closing lid 3, the main ring 4 and the opening / closing lid 3 are connected by engaging pieces K... protruding from the circumference of the annular edge where they face each other. When engaged, a corresponding linear groove M is recessed between the opening / closing lid 3 and the main ring 4, running vertically (as shown in the figure). Of course, the linear groove M may be painted with a fluorescent color H or have a label attached to it. Furthermore, instead of using groove M, colored lines can be used to connect them in a bridging manner.

[0015] The opening and closing lid 3 of the PET bottle 2 of this invention is configured as described above, and the degree of tightening of the opening and closing lid 3, which is screwed onto the opening screw portion 1A of the PET bottle, is checked as shown in Figures 3 to 4 below. Regarding the open / closed state of the lid of the above-mentioned PET bottle, is it partially consumed? Is it not opened? Furthermore, the appropriate degree of tightening of the lid can be judged at a glance by first observing the alignment or misalignment of the linear groove M between the lid 3 and the main ring 4, as shown in Figure 3.

[0016] In Figure 3, the appropriate degree of tightening of the opening / closing lid 3, which allows for the opening of the screw-cut opening portion 1A of the PET bottle 2, can be determined by visually checking the alignment or misalignment of the groove M. This ensures that there is no significant difference in the tightening force applied to the opening / closing lid 3 by the user, and that a uniform tightening force is ensured. In other words, Figure 3(a) shows that the linear groove M(H) between the opening / closing cover 3 and the main ring 4 coincides "X", indicating an appropriate tightening force. Also, as shown in Fig. 3(b), when the groove M(H) between the opening / closing lid 3 and the main body ring 4 is the misaligned line X1 that is deviated from the alignment line "X" by "α", it can be confirmed that the tightening degree of the opening / closing lid 3 is insufficient. Furthermore, as shown in Fig. 4, when the groove M(H) between the opening / closing lid 3 and the main body ring 4 is the misaligned line X2 that is deviated from the alignment line "X" by "β", it can be confirmed that the tightening degree of the opening / closing lid 3 is excessive.

[0017] Thus, for the user, since the tightening degree between the cap "opening / closing lid 3" and the opening "pouring spout 1" of the PET bottle can be confirmed, water leakage accidents in the PET bottle due to incomplete tightening of the opening / closing lid can be completely prevented, and the inability to open the opening by a weak person due to excessive tightening can also be prevented. Also, intentional acts, negligence, or malicious pranks by others can be easily discovered from the tightening status of the lid.

Industrial Applicability

[0018] The opening / closing lid of the PET bottle of the present invention is not limited to PET bottles, and of course, it is also applicable to screw-type opening / closing lids for bottle opening / closing lids and various containers (screw caps for bottles and cans).

Explanation of Reference Numerals

[0019] 1 Pouring spout 1A Opening screw part 1B Opening base part 2 PET bottle 3 Opening / closing lid 4 Main body ring K Engaging piece M Groove H Fluorescent color

Claims

1. An opening and closing lid for screwing and closing the opening of a PET bottle, wherein the opening and closing lid is engaged with a base ring that engages with the opening base of the PET bottle, and before the PET bottle is opened, several engaging pieces are attached to the circumferential position of the ring edge facing the base ring and the opening and closing lid, and in this engaged state, grooves or colored lines are connected in a bridging manner between the opening and closing lid and the base ring.

2. The lid for opening and closing a PET bottle according to claim 1 above, wherein, after the lid has been opened, the degree to which the lid is tightened or not can be visually detected by the alignment or misalignment of the groove line or color line of the main ring that faces the lid when it is screwed onto the opening of the PET bottle.

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