JP5012335B2 - Cap for liquid container - Google Patents

Description

  The present invention relates to a liquid container cap.

2. Description of the Related Art Conventionally, as one form of a cap for a liquid container, a spout is provided in a cap main body that is screwed to a mouth portion of the liquid container, or a member having the spout is assembled to the cap main body. There is provided a structure in which a lid body is connected via a lid, and a spout of a cap body can be covered with the lid body so as to be opened and closed. And, as shown in Patent Document 1 and the like, the cap outlet of the cap body is closed by placing a pull-top type closing plate inside thereof, and pulling up the pull ring when opening the cap, The thin-walled part around is broken and the closing plate is removed.
Utility Model Registration No. 2555969

In addition, in the liquid container, there is also provided a liquid container provided with a locking step around the outer peripheral surface of the mouth without providing an external screw so that a cap can be fitted. Yes. In this type of cap to be fitted, the cap body is provided with a fitting groove for fitting the mouth portion with an inner ring that is in contact with the inner peripheral surface of the mouth portion and an outer peripheral wall that is engaged with the step portion of the outer peripheral surface of the mouth portion. Forming.
Then, when disposing of this liquid container, in order to allow the general consumer to remove the cap without using a jig or the like, a part of the outer peripheral wall is raised toward the outside of the cap body. Thus, there has also been proposed a device that forms a part to be lifted up so that it can be unlocked from the mouth part, raises the part to be raised up when necessary, makes it easy to remove the cap, and facilitates separation.

However, when displaying liquid containers in stores, etc., as a fraudulent act, open the lid, remove the closing plate, open the lid, and then close the lid again, or raise the projected portion of the outer peripheral wall. The cap may be removed from the mouth, the container itself may be opened, and then the cap may be attached to the mouth again. After being opened illegally, it is determined that the cap has been opened as seen from the outside. There was a problem that it was difficult.
In view of the above circumstances, an object of the present invention is to make it easy to determine from the appearance of a cap that the package has been opened, and to prevent unauthorized acts such as unauthorized opening.

  The present invention has been made in consideration of the above problems, and is attached to a mouth portion of a liquid container and provided with a spout at the top, and is integrally connected to the cap body via a hinge, A cap for a liquid container comprising a lid that covers the spout so as to be openable and closable, wherein a locking tongue piece is connected to the lid body through a thin portion that can be broken, and the locking tongue piece is connected to the cap. The locking tongue piece is inserted into a locking hole provided in the main body, and the locking tongue piece is moved to the lower end of the tongue piece protruding downward from the locking hole portion by the upward movement of the locking tongue piece caused by the lid body. A lower locking portion for locking the locking tongue, and an upper locking portion for preventing the locking tongue from falling off at the upper end of the tongue positioned above the locking hole. When the lower locking portion is locked in the locking hole due to the body, the thin portion is broken and the locking tongue When the upper locking part is locked to the locking hole, and the upper locking part is closed again with the locking tongue piece locked to the locking hole. The present invention provides a cap for a liquid container characterized in that a gap is formed between the lid and the lid, thereby eliminating the above-mentioned problems.

  In the present invention, the cap main body is located on the lower surface of the top of the cap main body and is in contact with the inner peripheral surface of the mouth of the liquid container, and on the outer periphery of the top of the cap main body. Between the outer peripheral wall to be locked to the outer periphery of the mouth portion, there is a fitting groove into which the mouth portion of the liquid container is fitted, and an arcuate thin portion is provided along the top of the fitting groove, A thin-walled portion extending from the arc-shaped thin-walled portion to the lower end side of the outer peripheral wall is provided, and the outer peripheral wall is directed to the side of the cap body by the breakage of the thin-walled portion at the top of the fitting groove and the thin-walled portion of the outer peripheral wall. It is preferable that an expected raising portion that can be raised is provided, and the locking hole portion is provided in the expected raising portion.

  Further, in the present invention, the inner ring, a contact ring that protrudes downward from the top lower surface of the fitting groove and corresponds to the upper end surface of the mouth of the liquid container, and a liquid that protrudes downward from the top lower surface of the fitting groove It is preferable that the outer ring corresponding to the outer peripheral surface of the mouth portion of the container is in watertight contact with the mouth portion of the liquid container.

  Further, in the present invention, a thin portion is provided around the closing plate located inside the spout of the cap body, and a gas barrier film is disposed on the lower surface corresponding to the thin portion around the closing plate. Is good.

  According to the present invention, in order to open the lid body, the lid body is raised, the thin portion between the latching tongue pieces is broken, and the latching tongue pieces are dropped and moved to reclose the lid body and the latching tongue. Since a gap is formed between the two pieces, it can be easily determined whether or not it has been opened by simply checking whether or not the locking tongue piece of the lid is separated. Has the effect of inhibiting opening.

  According to the second aspect of the present invention, even if the part to be rolled up is raised with the cover closed, if the thin part between the cover and the locking tongue does not break, the rising is advanced. That is, if the lid is not raised once, the raised part cannot be raised. Therefore, even if the lid is reclosed in the cap that has been raised and raised, the gap between the lid and the locking tongue can be opened, and it can be easily determined that the cap has been opened.

  According to the invention of claim 3, the cap body is in watertight contact with the mouth portion of the liquid container at three locations of the inner ring, the contact ring, and the outer ring, and the mouth portion of the container body is the mouth portion of the mouth portion. Since it is sealed in three layers from the inner peripheral surface side to the outer peripheral surface side, when performing heat sterilization after filling the container with capped contents and capping, the container from the difference in the molding material between the cap and the container body Even if there is a slight change in the contact state with the mouth portion, the sealing performance is maintained and the heat resistance of the seal is improved.

  Further, according to the fourth aspect of the present invention, gas permeation can be suppressed from the thin portion around the closing plate, and the contents accommodated in the liquid container that is not opened with the cap attached can be prevented from being altered.

Next, the present invention will be described in detail based on the embodiment shown in FIGS.
In the figure, reference numeral 1 denotes a liquid container cap. As shown in FIG. 1, the liquid container cap 1 has a cap body 2 that can be fitted to the mouth A (see FIG. 3) of the liquid container and the cap body. 2 and a lid 4 connected to each other through a hinge 3, and is integrally formed using a synthetic resin material. A spout 6 is provided in the top 5 of the cap body 2, the inside of the spout 6 is closed with a closing plate 7, and a thin portion 8 positioned around the closing plate 7 is a closing plate 7. When the pull ring 9 integrated with the upper surface side of the plate is pulled up, the pull ring 9 is broken, and it is opened by removing the closing plate 7.
Further, as shown in FIG. 3, a gas barrier film 10 is provided in a region including the lower surface of the closing plate 7 and the lower surface of the thin portion 8 below the spout 6 closed by the closing plate 7. These are arranged integrally using an in-mold method that can be used for molding 1 so that external oxygen or the like does not permeate into the container from the closing plate 7 or the thin portion 8.

  Further, in the structure for attaching the cap body 2 to the mouth portion A of the liquid container, the inner ring 11 in contact with the inner peripheral surface of the mouth portion A is positioned around the spout 6. The outer peripheral wall 12 is provided over the outer periphery of the top 5 while being provided on the lower surface of the top 5, and the peripheral wall portion of the mouth A fits between the inner ring 11 and the outer peripheral wall 12. It forms as the fitting groove | channel 13 to insert. In order to ensure engagement with the mouth portion A fitted in the fitting groove 13, the step portion that engages with the step portion on the outer peripheral surface of the mouth portion A is the lower end inner peripheral surface of the outer peripheral wall 12. It is provided along.

In this liquid container cap 1, even when the liquid container cap 1 is attached to the mouth portion A and the container is subjected to heat sterilization or the like, the sealing performance between the mouth portion A and the cap body 2 does not deteriorate. Is provided. Specifically, as shown in FIG. 3, the inner ring 11 is in contact with the inner peripheral surface of the mouth portion A, and the protrusion contact protrudes downward from the lower surface of the top portion of the fitting groove 13. There is a ring 14, and when the peripheral wall of the mouth A is fitted in the fitting groove 13, the contact ring 14 abuts over the upper end surface of the mouth A. Further, an outer ring 15 is provided on the lower surface of the top portion of the fitting groove 13 so as to contact the upper edge of the outer peripheral surface of the mouth portion A on the outer side of the contact ring 14, and the inner ring 11 and the contact ring. 14 and the outer ring 15 are in watertight contact with the mouth portion A.
In this way, sealing is performed in triplicate from the container inner side to the container outer side, the inner ring 11 corresponds from the inner peripheral surface side of the mouth A, and the outer ring 15 corresponds from the outer peripheral surface side of the mouth A. Since the contact rings 14 correspond to the upper end surface of the mouth portion A from above and are in watertight contact with each other, the heating in the above-described heat sterilization and the liquid container itself are heated together with the contents. Even when the cap 1 and the mouth A are slightly deformed during heating, the seal is not broken, and the seal structure is durable against heat.

The present liquid container cap 1 is devised so that it can be removed from the mouth A without using a jig. As shown in FIG. 1, a thin-walled portion 16 is formed in an arc shape along the top portion of the fitting groove 13 excluding the hinge 3 side, and an outer periphery from one end portion of the arc-shaped thin-walled portion 16. A thin portion 17 reaching the lower end side of the wall 12 is provided, and a portion of the outer peripheral wall 12 along the arc-shaped thin portion 16 is set as a raised portion 18, and the thin portion 17 at the outer peripheral wall 12 is formed. The side is set as the start side of the roll-up scheduled portion 18. And this swell-up scheduled part 18 is a part that swells toward the outside of the cap body so as to break the thin-walled part 17 as the starting end, and the arc-shaped thin-walled part 16 that follows it. As a result, the engagement of the outer peripheral wall 12 with the mouth portion A is released at most of the fitting groove 13. For this reason, the entire cap 1 can be easily removed from the mouth A by holding the expected raised portion 18 that has been raised while breaking the thin-walled portions 17 and 16 and pulling it upward.
FIG. 6 shows the region of the uplifted portion 18 on the outer peripheral wall 12 as viewed from below, the position of the thin portion 16 (the top of the fitting groove 13), and the position of the thin portion 17 (outer peripheral wall). 12) Each is shown schematically.

  The lid 4 that covers the spout 6 so as to be openable and closable is provided with a flange 19 at a position facing the hinge 3, and is further directed downward in the cap height direction when the lid is closed via the thin portion 20. A locking tongue piece 21 extending in a straight line is connected. The locking tongue piece 21 includes an upper locking portion 22 that extends over the entire length of the thin portion 20, a tongue piece body 23 that extends downward from the center of the upper locking portion 22 in the cap height direction, and a lower end of the tongue piece body 23. And has a substantially T-shape. Further, as shown in the drawing, a decorative plate portion 25 is located on both sides of the tongue piece main body 23 via a gap 26, and each of the decorative plate portions 25 is continuous with the upper locking portion 22. The lower locking portion 24 of the locking tongue piece 21 is provided with a cross-sectional hook shape.

The locking tongue piece 21 engages with the cap body 2, and a locking hole portion 27 through which the locking tongue piece 21 is inserted is provided at a position corresponding to the locking tongue piece 21 of the cap body 2. When the lid is closed, the lower locking portion 24 of the locking tongue piece 21 passes through the locking hole portion 27 and protrudes at the lower position (see FIG. 3). When the lower locking portion 24 is locked in the locking hole 27 so that it cannot be pulled out only by moving upward in the vertical direction, and the lid 4 is further pulled and opened, the lower locking portion 24 is locked. The thin portion 20 is broken by the engagement with the hole portion 27.
When the lid 4 is first closed after the cap is formed, the lower locking portion 24 of the locking tongue 21 is slightly deformed and passes through the locking hole 27. Further, the gaps 26 on both sides of the tongue piece main body 23 avoid interference with the peripheral wall of the locking hole portion 27, so that the decorative plate portion 25 does not contact the peripheral wall of the locking hole portion 27. The decorative plate portion 25 protects the tongue piece main body 23 from being deformed by hitting another object before closing the cap after the cap is formed, and unnecessary deformation of the tongue piece main body 23 is possible even when the cover is closed. The appearance around the tongue piece body 23 is adjusted while protecting it from occurring (see FIGS. 4 and 5).

Then, when the thin portion 20 is broken by causing the lid 4 as described above, the entire locking tongue piece 21 drops and moves downward in the cap height direction, as shown in FIG. The upper locking part 22 is locked to the locking hole part 27 and stops. Of course, the upper locking portion 22 is sufficiently wide with respect to the opening size of the locking hole portion 27.
Even if the lid 4 that has been opened once is returned, the locking tongue piece 21 is moved down, so that the lid 19 and the upper locking portion 22 of the lid 4 that has been closed again, as shown in FIG. A gap 28 is formed between them, and it can be easily determined that the opening operation of the lid 4 has been performed by this gap 28.

  In addition, as described above, when the uplifting portion 18 is to be raised up improperly, the locking hole portion 27 is located in the uplifting portion 18, and the upset start portion of the uplifting portion 18. If the range from the (thin wall portion 17) to the locking hole 27 is less than a half circumference of the outer peripheral wall 12, the cover body 4 is raised and the locking tongue piece 21 is not separated from the flange 19, so The wake-up part 18 cannot be raised. The improperly raised portion 18 is raised up and the locking tongue piece 21 drops and moves, and the gap 28 is formed between the closed lid 4 and the locking tongue piece 21 as shown in FIG. As a result, it can be easily determined that the lid 4 has been raised.

  From the above, it is possible to suppress the act of causing the lid 4 to be illegally raised or raising the planned portion illegally.

It is explanatory drawing which shows an example of the cap for liquid containers which concerns on this invention in the state which the cover body opened. It is explanatory drawing which shows the cross section in the state in which the cover body opened similarly. Similarly, it is explanatory drawing which shows an unopened state in which the lid was closed in an example. It is explanatory drawing shown in the state which looked at an example of unopened from the front. It is explanatory drawing shown in the state which looked at an example of unopened from the side. It is explanatory drawing which shows roughly the area | region of the plan part which raises and raises a cap main body seeing from the downward direction. It is explanatory drawing which shows the state which the latching tongue piece fell and moved in an example. It is explanatory drawing which shows the state which rolled up and raised the scheduled part in one example, and closed the lid again.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cap for liquid containers 2 ... Cap body 4 ... Cover body 10 ... Gas barrier film 11 ... Inner ring 12 ... Outer peripheral wall 13 ... Fitting groove 14 ... Contact ring 15 ... Outer ring 18 ... Plane-raised part 19 ... ２０ 20 ... Thin part 21 ... Locking tongue piece 22 ... Upper locking part 23 ... Tongue piece main body 24 ... Lower locking part 25 ... Decorative plate part 27 ... Locking hole part 28 ... Gap between the heel and the dropped tongue piece

Claims (4)

A liquid container comprising a cap body attached to the mouth of a liquid container and having a spout provided on the top, and a lid that is integrally connected to the cap body via a hinge and covers the spout so that it can be opened and closed. A cap for
A locking tongue piece is connected to the lid through a thin portion that can be broken, and the locking tongue piece is inserted into a locking hole provided in the cap body,
The locking tongue piece is provided at the lower end of the tongue piece projecting downward from the locking hole with a lower locking portion that locks into the locking hole by the upward movement of the locking tongue caused by the lid. And an upper locking portion for preventing the locking tongue piece from falling off is provided at the upper end of the tongue piece located above the locking hole portion. When the locking portion is locked, the thin-walled portion is broken, the locking tongue piece is separated from the lid, and is moved downward and the upper locking portion is locked to the locking hole portion. A cap for a liquid container, characterized in that the locking tongue piece locked in the locking hole portion is separated from the lid when reclosed, and a gap is formed between the two. The cap body is located on the lower surface of the top of the cap body and in contact with the inner peripheral surface of the mouth of the liquid container, and on the outer periphery of the top of the cap body and is engaged with the outer periphery of the mouth of the liquid container. Between the outer peripheral wall to be stopped, it has a fitting groove into which the mouth of the liquid container is fitted,
An arc-shaped thin portion is provided along the top of the fitting groove, and a thin portion reaching the lower end side of the outer peripheral wall from the arc-shaped thin portion is provided, and the thin wall of the fitting groove top is provided on the outer peripheral wall. A portion to be erected and capable of being raised toward the side of the cap body at the break of the outer wall and the thin wall portion of the outer peripheral wall,
The liquid cap according to claim 1, wherein the locking hole portion is provided in the expected rising portion.   The inner ring, a contact ring that protrudes downward from the lower surface of the top of the fitting groove and corresponds to the upper end surface of the mouth of the liquid container, and the outer periphery of the mouth of the liquid container that protrudes downward from the lower surface of the top of the fitting groove The cap for liquid containers according to claim 2, wherein the outer ring corresponding to the surface is in watertight contact with the mouth of the liquid container.   4. A thin-walled portion is provided around a closing plate located inward of the spout of the cap body, and a gas barrier film is disposed on a lower surface corresponding to the thin-walled portion around the closing plate. The cap for liquid containers as described in any one.

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