JP3130480U - Bottle cap - Google Patents

Abstract

An object of the present invention is to improve the gas barrier property of an inner cylinder portion of an upper lid and improve the sealing property of the entire bottle cap.
An upper lid is provided with an outer tube portion that is inserted into the mouth-neck portion of the bottle and is fitted to the mouth-neck portion of the bottle, and an inner tube portion that stores fine powder of tea leaves therein. The inner cylinder part has an inner cylinder bottom cover that opens and closes its lower end opening, and is provided on the side peripheral surface and the top surface of the inner cylinder part. A barrier layer having gas barrier properties is interposed at the middle position in the thickness direction over the entire region.
[Selection] Figure 1

Description

  The present invention relates to a bottle cap that has a raw material storage part that stores a powdery raw material, and releases the raw material into the bottle by dropping off the inner cylinder bottom cover of the raw material storage part in accordance with the opening operation.

  Conventionally, as this kind of bottle cap, for example, a two-component mixing container disclosed in JP-A-8-91418 (Patent Document 1) and a bottle cap disclosed in JP-A-2005-88997 (Patent Document 2) are known.

When these bottle caps are used for green tea plastic bottles, they are usually molded with a light-shielding resin material in order to prevent alteration of the fine powder of tea leaves that fills the inner cylinder.
However, for example, when the PET bottle is transparent, the incident light is enhanced by using the PET bottle as a lens, and the light-shielding property of the resin is not sufficient, and there is a risk of deterioration such as oxidation of the fine powder of tea leaves.

In addition, the conventional bottle cap adopts a configuration in which a step is provided on the lower end of the outer cylinder and the outer periphery of the inner cylinder bottom lid so that the liquid in the bottle does not enter the gap between the inner cylinder and the outer cylinder. However, it was difficult to ensure sealing performance.
JP-A-8-91418 JP 2005-88997 A

  This invention was devised in view of the above circumstances, and the main problem is that the tea leaf powder filled inside the inner cylinder is strictly protected from deterioration such as light and oxidation, and the tea leaf is used until it is used. It is to provide a bottle cap that can be maintained without impairing the quality of the bottle.

In order to solve the above problem, the device of claim 1
An upper lid attaching part fitted to the mouth and neck part of the bottle, comprising an outer cylinder part opened up and down to be inserted into the mouth and neck part of the bottle;
It has a cylindrical shape whose top surface is closed and whose bottom surface is open, and it has an inner cylinder part that contains a stored object such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and the upper cover is attached. An upper lid that is screwed onto the top of the part and is crowned;
An inner cylinder bottom lid that detachably fits to the lower end of the inner cylinder part protruding from the lower end of the outer cylinder part and closes the lower surface opening of the inner cylinder part,
The upper lid is screwed in the opening direction to raise the inner cylinder part, the inner cylinder bottom cover is dropped from the inner cylinder part by abutting with the lower end of the outer cylinder part, and the object to be stored in the inner cylinder part is placed in the bottle. A bottle cap that is released into
A barrier layer having a gas barrier property is provided at an intermediate position in the thickness direction over the entire side peripheral surface and top surface of the inner tube portion.

In the invention of claim 2,
The barrier layer is made of an EVOH resin film.
Furthermore, in the device of claim 3,
The inner cylinder bottom lid has a peripheral wall portion that rises along the outer periphery, and an annular fitting groove portion that is formed between the inner wall of the peripheral wall portion and a central raised portion that fits the lower end of the inner cylinder portion. And
An annular main seal portion that seals the inside of the inner cylinder in an airtight manner between the bottom of the inner cylinder and the bottom of the fitting groove is fixed,
An annular auxiliary seal part that seals the inside of the inner cylinder part in an airtight manner between the upper end of the peripheral wall part and the lower end of the outer cylinder part is fixed.

According to the first aspect of the present invention, the entire peripheral surface of the inner cylinder portion of the upper lid that covers the fine powder of tea leaves is covered with the barrier layer having gas barrier properties, thereby improving the quality protection effect of the fine powder of tea leaves. be able to.
Further, according to the invention of claim 3, since the inner cylinder part can be sealed twice by the main seal part and the auxiliary seal part, the gas barrier property at the detachable part between the outer lid and the inner cylinder part is maintained. be able to.

  The present invention provides a tea leaf by interposing a barrier layer having a light shielding property and a gas barrier property at the intermediate position in the thickness direction over the entire area of the side peripheral surface and the top surface of the inner cylinder portion that stores the fine powder of the tea leaf. The purpose of the quality of the fine powder was not deteriorated.

Preferred embodiments of the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a partial cross-sectional view of the bottle cap 1 as viewed from the side with the bottle cap 1 attached thereto, and FIG. 2 is a side view of the beverage container with the bottle cap attached.
In the present embodiment, the bottle cap 1 is made of a molded product of polypropylene, and is attached to the upper lid attaching portion 5 that is fitted to the mouth and neck portion 51 of the bottle 50 such as a plastic bottle, and is detachably attached to the upper lid attaching portion 5. And an upper lid 2 of a screw lid type.

[Upper lid mounting part]
The upper lid attaching part 5 is integrally provided with a fitting main body part 5A that covers the mouth / neck part 51 of a bottle 50 such as a plastic bottle, and an outer cylinder part 6 that has a spout part 6a at the top and is open at both upper and lower ends. Yes.

[Outer cylinder]
As shown in FIGS. 1 and 3, the outer cylinder portion 6 is formed of a cylindrical body, extends vertically inside the fitting main body portion 5A, and penetrates integrally, and protrudes upward from the fitting main body portion 5A. The upper part is a spout part 6a whose upper end is open.
Moreover, the outer cylinder part 6 extended in series downward from the spout part 6a protrudes below inside the fitting main body part 5A, and forms the drooping cylinder part 6b, Between the fitting main body part 5A, While forming a gap in which the bottle neck portion 51 of the bottle is fitted, it hangs downward from the lower end of the fitting main body portion 5A and opens at the lower end.

The outer peripheral surface of the drooping cylinder portion 6b is slightly tapered to facilitate insertion into the bottle mouth / neck portion 51.
Further, the upper portion of the fitting main body portion 5A has a step portion 5a that is connected to the midway position of the outer cylinder portion 6 and serves as the upper surface of the fitting main body portion 5A.
A hanging annular protrusion 5b is formed on the inner wall of the step 5a.

A groove 5c is formed at the lower edge of the annular protrusion 5b so as to cover the top of the mouth / neck portion 51 when the upper lid attaching portion 5 is fitted into the bottle mouth / neck portion 51. The portion 5 is in close contact with the portion 5.
An annular protrusion 6c for preventing leakage that contacts the inner edge of the mouth / neck part 51 is formed on the outer periphery of the drooping cylinder part 6b at the location facing the inner upper end of the bottle mouth / neck part 51. To prevent liquid leakage.
Moreover, the outer diameter of the drooping cylinder part 6b is set to be substantially the same as the inner diameter of the mouth / neck part 51 of the bottle.

On the inner peripheral surface of the fitting main body portion 5A, a female screw N2 that is screwed with a male screw N1 engraved on the outer periphery of the mouth / neck portion 51 of the bottle 50 is cut.
An anti-slip knurl 5d is formed on the outer peripheral surface of the fitting main body 5A.
A male screw N3 is provided on the outer peripheral surface of the spout portion 6a for screwing a crowned upper lid 2 to be described later.

[Top cover]
The upper lid 2 includes an upper lid body 3 and an inner cylinder portion 4 that hangs down from the lower surface of the top portion 3a and stores fine powder of tea leaves.
The upper lid body 3 includes a circular top 3a and a body 3b that hangs along the outer periphery thereof.
On the inner peripheral surface of the body portion 3b, a female screw N4 that is screwed with the male screw N3 of the spout portion 6a is formed.
An anti-slip knurl 3d is engraved on the outer peripheral surface of the body 3b.

[Inner cylinder]
The inner cylinder part 4 consists of the cylinder body which a lower end opens, and it protrudes long below the trunk | drum 3b through the clearance gap between the trunk | drum 3b of the upper cover main body 3. As shown in FIG.
The length of the inner cylinder part 4 protrudes longer than the outer cylinder part 6 when the upper lid 2 is screwed to the upper lid attaching part 5, and when the inner cylinder bottom cover 9 is fitted to the lower part of the inner cylinder part 4, The upper end of the peripheral wall portion 9c of the tube bottom cover 9 is set to a length that can contact the lower end of the outer tube portion 6 with almost no gap.

The thickness of the inner cylinder part 4 is substantially the same from the upper end to the lower end, but it is preferable that the lower end part is chamfered in a tapered shape so that it can be easily inserted into the outer cylinder part 6.
Further, the tip of the inner cylinder part 4 protruding from the outer cylinder part 6 is fitted into the fitting groove part 9a of the inner cylinder bottom cover 9, and at that time, an inward stepped part 9d formed on the inner wall surface of the peripheral wall part 9c. An annular recess 4a is provided so as to be locked.

[Barrier layer]
The barrier layer 14 is formed as an intermediate layer of the inner cylinder portion 4. In this embodiment, an EVOH resin film (trade name: Eval) having gas barrier properties is used. However, the barrier layer 14 has gas barrier properties such as alumina and light shielding properties. You may use the material which has and other well-known materials.

  The upper lid body 3 is integrally provided with a thin and short sealing ring 23 with a concentric large diameter and a gap between the upper portion of the inner cylinder portion 4 and the body portion 3b. Is configured to be pressed in the direction of the body portion 3b of the upper lid body 3 when it is fitted along the inner peripheral surface of the spout portion 6a.

[Inner cylinder bottom cover]
The inner cylinder bottom cover 9 includes an annular peripheral wall portion 9c that rises along the outer periphery, a raised portion 9b that is surrounded by the peripheral wall portion 9c and that protrudes from the inside at the center, and a lower surface that is recessed, and the peripheral wall portion 9c and the raised portion. An annular fitting groove 9a that is formed between the fitting portion 9b and the lower end of the inner cylinder portion is fitted, and a blade portion 9e that extends in the diameter direction in the fitting groove 9a.

As shown in FIG. 4, the annular main seal portion S1 that seals the inside of the inner cylinder portion 4 in an airtight manner with the lower end of the inner cylinder portion 4 at the groove bottom portion of the fitting groove portion 9a. Is fixed.
The main seal portion S1 may be fixed to the lower end of the inner cylinder portion 4 instead of the groove bottom portion of the fitting groove portion 9a.
The main seal portion S1 is made of an annular packing made of soft silicon rubber, polypropylene, or the like in the present embodiment, but any known material can be used as long as it is an airtight seal material.

Further, an annular auxiliary seal that seals the inside of the inner cylinder part 4 in an airtight manner between the upper end of the peripheral wall part 9 c of the inner cylinder bottom cover 9 fitted on the inner cylinder part 4 and the lower end of the outer cylinder part 6. Part S2 is fixed.
The auxiliary seal portion S <b> 2 may be provided at the lower end of the outer cylinder portion 6 instead of the upper end of the peripheral wall portion 9 c of the inner cylinder bottom lid 9.
The auxiliary seal portion S2 is also made of an annular packing made of soft silicon rubber, polypropylene, or the like in this embodiment, but any known material can be used as long as it is an airtight seal material.

  In the figure, the reason why the gap is formed in the attachment portion of the main seal portion S1 and the auxiliary seal portion S2 is that the seal of each seal portion protrudes sideways and escapes when it is pressed and crushed.

  Further, as shown in FIG. 3 and FIG. 5, the blade portion 9 e is composed of a plurality of (six in the illustrated example) blades extending radially around the raised portion 9 b, and is dropped from the inner tube portion 4 and bottle 50 By rotating the inner cylinder bottom cover 9 when sinking in, the fine powder of tea leaves dropped from the inner cylinder part 4 can be stirred appropriately.

[Band part for unopened confirmation]
As for the upper lid 2, an annular unopened confirmation band portion 11 integrally formed with the upper lid body 3 is partially connected to the lower peripheral edge of the body portion 3 b of the upper lid body 3 so as to be separable.
That is, the trunk portion 3b and the band portion 11 of the upper lid 2 are slightly connected together by a plurality of bridges 12 which are small connection portions, and are separated when the bridge 12 is cut. .

Further, a small concave portion 13a is provided on the lower peripheral edge of the body portion 3b of the upper lid 2, and a small convex portion 13b is provided on the band portion 11, which are fitted to each other. It is preferable to illustrate an arrow or the like indicating a threading direction on the top 3a of the upper lid body 3 (not shown).
Further, on the outer peripheral surface of the spout portion 6a of the upper lid attaching portion 5, a retaining portion 6d made of an annular lateral recess is integrally formed between the lower end of the male screw N3 and the step portion 5a of the fitting main body portion 5A. Is provided.

The bottle cap having such a structure is assembled as follows.
In assembling the upper lid attaching portion 5 and the upper lid 2, the inner cylindrical portion 4 is inserted into the outer cylindrical portion 6, the female screw N4 of the upper lid 2 is screwed into the male screw N3 of the upper lid attaching portion 5, and an annular band portion The top cover 2 is put on the spout portion 6a of the outer cylinder portion 6 until the 11 exceeds the retaining portion 6d, and the spout portion 6a is sealed.

At this time, the band part 11 of the upper lid 2 is locked by the retaining part 6 d and the lower end part of the inner cylinder part 4 projects from the lower end opening of the outer cylinder part 6.
After a predetermined amount of fine powder of tea leaves is introduced from the lower end opening of the inner cylinder part 4, the inner cylinder bottom cover 9 is fitted into the lower end opening to seal the inner cylinder part 4.
That is, the lower end portion of the outer cylinder portion 6 is fitted to the upper end of the peripheral wall portion 9c of the inner cylinder bottom cover 9 fitted to the inner cylinder portion 4 via the auxiliary seal portion S2 without a gap.
At the same time, the sealing ring 23 is press-fitted into the spout portion 6a, the top portion 3a of the upper lid body 3 presses against the upper end of the spout portion 6a, and the sealing ring 23 is pressed against the spout portion 6a in the body portion 3b direction. Hold from.

When the inner cylinder bottom cover 9 is fitted to the inner cylinder part 4, as shown in FIG. 4, the inward stepped part 9d of the peripheral wall part 9c of the inner cylinder bottom cover 9 is formed in the recess 6e at the lower end of the inner cylinder part 4. Engage with each other so that the outer edge of the lower end of the inner cylinder part 4 is pressed against the annular groove 9a of the inner cylinder bottom cover 9 and is in close contact with the lower end of the inner cylinder part 4 by the main seal part S1.
At the same time, as described above, the lower end portion of the outer cylinder portion 6 is closely attached to the upper end of the peripheral wall portion 9c of the inner cylinder bottom lid 9 by the auxiliary seal portion S2.

Thereby, not only can the inner cylinder part 4 be sealed, but the inner cylinder bottom cover 9 and the outer cylinder part 6 can be brought into close contact with each other to further improve the sealing performance of the inner cylinder part 4.
In this embodiment, fine powder of tea leaves is stored in the inner cylinder portion 4.
Further, a pressure gas may be enclosed together with the fine powder of tea leaves.

  When the bottle cap assembled as described above is attached to the mouth / neck portion 51 of the bottle 50 such as a plastic bottle, the outer cylinder portion 6 is inserted into the bottle mouth / neck portion 51 and the fitting body of the upper lid attaching portion 5 is inserted. The part 5A is turned in the closing direction, and the female thread N2 of the fitting main body part 5A is screwed into the male thread N1 of the bottle neck part 51, and a retaining ring 5b is formed below the mouth neck part 51 of the bottle. The bottle 50 and the bottle cap 1 are firmly brought into close contact with each other until the upper end of the mouth-and-neck portion 51 is pressed against the annular protrusion 5b beyond the retaining ring 5b.

  When this bottle 50 is used, when the upper lid body 3 of the upper lid 2 is rotated in the opening direction with respect to the upper lid mounting portion 5 and screwed, the band portion 11 of the upper lid 2 is secured to the retaining portion 6d on the upper lid mounting portion 5 side. Therefore, the bridge 12 which is a connecting portion with the band portion 11 is cut, the band portion 11 and the upper lid body 3 are separated and displaced up and down, and the fitting between the concave portion 13a and the convex portion 13b is further performed. It will be off.

When the upper lid 2 is further rotated, the inner cylinder part 4 is also raised while rotating, but the upper end of the peripheral wall part 9c of the inner cylinder bottom lid 9 is in contact with the lower end of the outer cylinder part 6 so that the rise is increased. It is blocked and disengages from the inner cylinder part 4.
As a result, the lower surface of the inner cylinder portion 4 is opened, and the stored fine powder of tea leaves is discharged, and the inner cylinder bottom lid 9 sinks while forming a vortex in the liquid of the bottle 50 while rotating.
Even if the upper lid 2 is pulled out, the upper lid attaching portion 5 does not come off the bottle neck portion 51 due to the engagement of the retaining ring 5b as described above.

Even after the upper lid 2 is removed, the upper lid attaching portion 5 remains with its outer cylinder portion 6 fitted in the bottle mouth / neck portion 51.
Therefore, a slit or a hole, which is a known means, may be provided in the hanging cylinder portion 6b so that the liquid does not easily enter and drain between the outside of the hanging cylinder portion 6b and the inside of the bottle neck portion 51.

Moreover, in the said Example, although the case where the fine powder of the tea leaf was accommodated in the inner cylinder part was illustrated, in this invention, you may accommodate the powder, granule, etc. for other drinks.
In addition, various designs can be made within a range that does not change the gist of the invention according to the application.

It is a fragmentary sectional view in the state where the bottle cap was attached to the bottle. It is a front view of a beverage container equipped with a bottle cap. It is the front view which decomposed | disassembled which shows an attachment state. It is a principal part expanded sectional view which shows the attachment state of an inner cylinder bottom cover. It is a bottom view of an inner cylinder bottom cover. It is sectional drawing of the bottle cap of an unused state. It is sectional drawing of the bottle cap of use condition.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottle cap 2 Upper cover 3 Upper cover main body 3a Top part 3b Body part 4 Inner cylinder part 5 Upper cover attaching part 5A Fitting main-body part 5a Step part 5b Annular protrusion 6a Spout part 6 Outer cylinder part 6d Retaining part 9 Inner cylinder bottom cover 9a Fitting groove portion 9b Raised portion 9c Peripheral wall portion 9e Blade portion 10 Sealing ring 11 Band portion

Claims (3)

An upper lid attaching part fitted to the mouth / neck part of the bottle with an outer cylinder part opened up and down to be inserted into the mouth / neck part of the bottle;
It has a cylindrical shape whose top surface is closed and whose bottom surface is open, and it has an inner cylinder part that contains the object to be stored, such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and the upper cover is attached. An upper lid that is screwed onto the top of the part and is crowned;
An inner cylinder bottom lid that detachably fits on the lower end of the inner cylinder part protruding from the lower end of the outer cylinder part and closes the lower surface opening of the inner cylinder part,
The upper cover is screwed in the opening direction to raise the inner cylinder part, the inner cylinder bottom cover is dropped from the inner cylinder part by abutting with the lower end of the outer cylinder part, and the object to be stored in the inner cylinder part is placed in the bottle. A bottle cap that is released into
A bottle cap comprising a barrier layer having a gas barrier property at an intermediate position in the thickness direction over the entire side peripheral surface and top surface of the inner cylinder portion.   The bottle cap according to claim 1, wherein the barrier layer is made of an EVOH resin film. The inner cylinder bottom cover has a peripheral wall portion that rises along the outer periphery, and an annular fitting groove portion that is formed between the peripheral wall portion and a central raised portion inside the peripheral wall portion and engages the lower end of the inner cylinder portion. And
An annular main seal portion that seals the inside of the inner cylinder in an airtight manner between the bottom of the inner cylinder and the bottom of the fitting groove is fixed,
2. The bottle cap according to claim 1, wherein an annular auxiliary seal portion that seals the inside of the inner cylinder portion in an airtight manner between the upper end of the peripheral wall portion and the lower end of the outer cylinder portion is fixed.

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