JP2009051555A - Bottle cap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bottle cap surely attaching a tamperproof band to an upper lid attaching portion and surely attaching the upper lid attaching portion to a mouth-to-neck portion of a bottle. <P>SOLUTION: A first coming-off preventing piece composed of a first coming-off preventing body having an L-shaped section is disposed on the ring-like tamperproof band under the upper lid via a hinge. The first coming-off preventing body is folded back and is housed in a first coming-off preventing slot formed on the upper lid attaching portion. When the upper lid is separated from the tamperproof band, the move of the tamperproof band is regulated vertically. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

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

  Conventionally, as this kind of bottle cap, for example, a bottle cap disclosed in Japanese Patent Application Laid-Open No. 2004-106888 (Patent Document 1) and a bottle cap disclosed in Japanese Patent Application Laid-Open No. 2005-88997 (Patent Document 2) are known.

In these bottle caps, as a structure for locking the cap so that it does not come off from the bottle, for example, a configuration in which a lock claw is provided on the bottle side so that the cap cannot be reversed is disclosed. This structure has a disadvantage that it is not versatile and is difficult to regulate in the vertical direction.
In addition, as a structure for locking the unopened confirmation band part to the upper lid attaching part, a locking structure with a stepped part or a convex part is common, but since the contact area is narrow, sufficient regulation cannot be performed. When removing the upper lid, there was a problem that the band was also pulled out in conjunction with it.
JP-A-8-91418 JP 2005-88997 A

The present invention has been devised in view of the above circumstances, and the main problem is that when the upper lid is removed, the band portion for unopening confirmation is reliably hooked to the upper lid mounting portion so that it does not come off. It is to provide a bottle cap that can be stopped.
Another object of the present invention is to provide a bottle cap in which the upper lid attaching portion is securely hooked to the mouth / neck portion of the bottle.
Another object of the present invention is to provide a bottle cap with improved sealing performance of the inner cylinder bottom lid.

In order to solve the above problem, the invention of claim 1
An upper lid mounting portion having an outer cylinder portion that is opened in the upper and lower sides to be inserted into the mouth and neck portion of the bottle and a fitting main body portion that is fitted to the mouth and neck portion of the bottle, and the top surface is blocked and the lower surface is opened. It has a cylindrical shape and has an inner cylinder part that accommodates an object to be stored such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and screwed onto the upper part of the upper lid mounting part to be crowned. And an inner cylinder bottom cover 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 lid is screwed in the opening direction. A bottle cap formed by advancing the inner cylinder part, dropping the inner cylinder bottom lid from the inner cylinder part by abutting with the lower end of the outer cylinder part, and discharging the contents in the inner cylinder part into the bottle Because
The upper lid has an annular unopened confirmation band portion that is partially connected to the lower portion thereof and restrained by the upper lid mounting portion,
The unopened confirmation band portion includes a first retaining body portion having a substantially L-shaped cross section at a lower portion thereof, and a hinge portion integrally connecting the first retaining body portion to the unopened confirmation band portion. A first retaining piece comprising:
A first retaining groove is formed between the lower end of the male screw formed on the upper lid attaching portion and the upper surface of the fitting main body, and is closed by the unopened confirmation band when attached,
The first retaining piece is folded back to the inside of the band portion for unopened confirmation via the hinge portion and stored in the first retaining groove portion,
When the upper lid is separated from the unopened confirmation band, the movement of the unopened confirmation band can be restricted in the vertical direction.

In the invention of claim 2,
An upper lid mounting portion having an outer cylinder portion that is opened in the upper and lower sides to be inserted into the mouth and neck portion of the bottle and a fitting main body portion that is fitted to the mouth and neck portion of the bottle, and the top surface is blocked and the lower surface is opened. It has a cylindrical shape and has an inner cylinder part that accommodates an object to be stored such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and screwed onto the upper part of the upper lid mounting part to be crowned. And an inner cylinder bottom cover 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 lid is screwed in the opening direction. A bottle cap formed by advancing the inner cylinder part, dropping the inner cylinder bottom lid from the inner cylinder part by abutting with the lower end of the outer cylinder part, and discharging the contents in the inner cylinder part into the bottle Because
A second removal body comprising a second retaining body portion having a substantially L-shaped cross section at a lower portion of the fitting body portion of the upper lid attaching portion, and a hinge portion integrally connecting the second retaining body portion to the fitting body portion. Has a stop piece,
A second retaining groove formed between the lower end of the male screw of the mouth and neck of the bottle and the lower flange thereof, which is closed on the lower end side of the fitting main body when mounted;
The second retaining piece is folded back to the inside of the fitting main body part via the hinge part and stored in the second retaining groove part,
The movement of the upper lid attaching part screwed to the mouth and neck of the bottle can be restricted in the vertical direction.

In the invention of claim 3,
In addition to the structure of Claim 1, it has the structure of Claim 2.
In the invention of claim 4,
The inner cylinder bottom cover is formed between an annular peripheral wall portion that rises along the outer periphery, an inner support portion that is set concentrically smaller in diameter than the peripheral wall portion inside the peripheral wall portion, and the inner support portion and the peripheral wall portion. And has an annular fitting groove for fitting the lower end of the inner cylinder part,
The inner support portion is a ring-shaped inner wall portion that stands up against the peripheral wall portion, projects outward at the lower portion of the inner wall portion, extends to a midway position at the bottom of the fitting groove portion, and abuts the lower end of the inner cylinder portion And an annular seal step portion.
Furthermore, in the invention of claim 5,
An annular auxiliary seal portion that abuts the lower end of the outer cylinder portion and seals the inside of the inner cylinder portion in an airtight manner is fixed to the upper end of the peripheral wall portion of the inner cylinder bottom cover.

According to the invention of claim 1, the first retaining main body portion having a substantially L-shaped cross section is displaced to the inside of the band portion for unopened confirmation by bending the hinge portion, and the male screw formed on the upper lid attaching portion. A band for confirming unopening of the upper lid by being inserted into a first retaining groove portion formed between the lower end portion and the upper surface of the fitting main body portion and closed by the unopened confirmation band portion at the time of mounting. Even when an upward force is applied when separating from the portion, the movement of the band portion for unopened confirmation can be restricted and the upper lid can be reliably separated.
According to the second aspect of the present invention, the second retaining main body portion having a substantially L-shaped cross section is displaced to the inside of the fitting main body portion by bending the hinge portion, and the lower end portion of the male screw in the mouth and neck portion of the bottle Even when a vertical force is applied to the upper lid mounting portion, the upper lid mounting portion is inserted into the second retaining groove portion that is formed between the lower end side of the fitting main body portion at the time of mounting. The movement of the upper lid attaching portion in the vertical direction can be restricted so that it does not come off the mouth and neck of the bolt.
According to the invention of claim 3, the effects of claims 1 and 2 can be realized simultaneously.
According to invention of Claim 4, the lower end of an inner cylinder part can be sealed from two directions, a bottom face and an inner surface, and the improvement of a sealing performance can be aimed at.
According to the fifth aspect of the present invention, since the space between the outer cylinder portion is further sealed, the sealing performance can be further enhanced.

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

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 when the bottle cap 1 is attached to the bottle 50, and FIG. 2 is an exploded view showing the bottle cap attached.
In the present embodiment, the bottle cap 1 is made of a molded product of polypropylene, and an upper lid attaching portion 5 (see FIG. 3) fitted to the mouth and neck portion 51 of a bottle 50 such as a PET bottle, and the upper lid attaching portion 5. And a screw lid type upper lid 2 (see FIG. 4).

[Upper lid mounting part]
As shown in FIGS. 1 to 3, the upper lid attaching portion 5 has a substantially cylindrical outer cylinder portion 6 having a spout portion 6 a in the upper portion and opened at both upper and lower ends, and an intermediate position of the outer cylinder portion 6. A fitting main body portion 5A is provided integrally with the bottle neck 50 of a bottle 50 such as a PET bottle, which extends downward after expanding to a concentric large diameter and extends downward.

[Outer cylinder]
The outer cylinder portion 6 is formed of a cylindrical body and extends vertically inside the fitting main body portion 5A and integrally penetrates, and an upper portion protruding upward from the fitting main body portion 5A has a spout opening at the upper end. It becomes part 6a.
Further, the outer tube insertion portion 6b extending downward from the spout portion 6a and projecting downward inside the fitting main body portion 5A is fitted with the mouth neck portion 51 of the bottle between the fitting main body portion 5A. The lower end of the fitting main body 5A is opened downward while forming a gap.

The outer peripheral surface of the outer cylinder insertion portion 6b is extremely slightly tapered in order to facilitate insertion into the bottle neck portion 51.
Further, the upper portion of the fitting main body portion 5A is a stepped portion 5a that protrudes from the middle position of the outer cylinder portion 6 to a concentric large diameter and becomes 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 (see FIG. 1).

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.
Moreover, the outer diameter of the outer cylinder part 6 is set to the diameter substantially the same as the inner diameter of the bottle neck part 51 of a 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.
And the protrusion 5d for slipping is formed in the outer peripheral surface of 5 A of fitting main-body parts.
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]
As shown in FIGS. 1 and 2 and 4, 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 3 a 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 is formed which is screwed with the male screw N3 of the spout portion 6a (see FIG. 1).
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 by a predetermined length when the upper lid 2 is screwed to the upper lid attachment part 5, and the inner cylinder bottom cover 9 is formed below the inner cylinder part 4. Is set to such a length that the upper end of the peripheral wall portion 9c of the inner cylinder bottom cover 9 can be in contact with the lower end of the outer cylinder portion 6 with almost no gap (see FIGS. 1 and 5).

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 in that case, an inward projecting 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.

  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]
As shown in FIGS. 1 and 2, the inner cylinder bottom cover 9 includes an annular peripheral wall portion 9 c that rises along the outer periphery, and an inner support that is set to a concentric small diameter inside the peripheral wall portion 9 c from the peripheral wall portion 9 c. Part 9b, and an annular fitting groove 9a formed between the inner support part 9b and the peripheral wall part 9c for fitting the lower end of the inner cylinder part.

Here, the inner support portion 9b has an annular inner wall portion 91 that stands up against the peripheral wall portion 9c, and protrudes outward at a lower portion of the inner wall portion 91 and extends to a midway position at the bottom of the fitting groove portion 9a. It consists of an annular seal step 92 that abuts the lower end of the tube portion 4 and a base surface 93 that blocks the inside in a series at the bottom of the inner wall portion 91.
Here, the reason that the seal step portion 92 is set to the middle position of the bottom portion of the fitting groove portion 9a, and the gap S is left outside of the seal step portion 92 when the seal step portion 92 is pressed against the lower end of the inner cylinder portion 4 and is crushed. The reason is to run out to the side.

  Since the inner support portion 9b abuts the lower end of the inner cylinder portion 4 to seal the inside of the inner cylinder portion 4, it is preferable to use a material having high sealing properties such as silicon rubber or polypropylene in this embodiment. In the invention, the material is not particularly limited.

  In the illustrated example, the inner cylinder bottom lid 9 and the inner support portion 9b are separated from each other. However, they may be integrally formed. In this case, the inner wall 91 and the seal step 92 are formed on the bottom surface of the inner cylinder bottom lid 9. The base surface 93 can be omitted.

Further, an annular auxiliary seal portion 9e that seals the inside of the inner cylinder portion 4 in an airtight manner with the lower end of the outer cylinder portion 6 is fixed to the upper end of the peripheral wall portion 9c.
The auxiliary seal portion 9e may be provided at the lower end of the outer cylinder portion 6 instead of the upper end of the peripheral wall portion 9c of the inner cylinder bottom lid 9.
In this embodiment, the auxiliary seal portion 9e is a ring whose cross section extends from the inner end of the upper surface of the peripheral wall portion 9c to a substantially halfway position, and is fitted and locked to a step portion 6e formed at the lower end of the outer cylinder portion 6. It has come to be.
The step portion 6e is an annular step portion which is cut from the inner end corner portion to the midway position at the lower end of the outer tube portion 6, and is adapted to be hooked in alignment with the auxiliary seal portion 9e.
In the present invention, the shape of the inner cylinder bottom cover is not limited to the above-described embodiment, but may be a known shape.

[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 body 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 and thin connection portions, and are separated when the bridge 12 is cut. Yes.

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.
In the figure, reference numeral 13a ′ denotes an auxiliary concave portion that is suspended to cover the vertical wall side of the convex portion 13b.
In the case of the illustrated example, the bridge 12 is also stretched between the center of the concave portion 13a and the center of the convex portion 13b.
In addition, it is preferable to illustrate the arrow etc. which show the direction to thread on the top part 3a etc. of the upper cover body 3 (not shown).

[First retaining groove]
Further, on the outer peripheral surface of the spout portion 6a of the upper lid mounting portion 5, there is an annular lateral recess between the lower end portion N3a of the male screw N3 and the stepped portion 5a of the fitting main body portion 5A. A first retaining groove 6d that is blocked by the opening confirmation band 11 is formed.

[First retaining piece]
In the illustrated example, four first retaining pieces 14 are integrally formed at an interval of 90 degrees in the lower portion of the unopened confirmation band portion 11 (see FIG. 4).
As clearly shown in FIG. 6, the first retaining piece 14 includes a first retaining body portion 14 a having a substantially L-shaped cross section, and a base end of the first retaining body portion 14 a and the band portion 11. It consists of a thin and bendable hinge portion 14b interposed therebetween.

A notch groove 11a is formed in a lower portion of the band portion 11 to which the hinge portion 14b is integrally connected, and the base end side of the first retaining main body portion 14a is fitted when the hinge portion 14b is bent about 180 degrees. The first retaining main body portion 14a is fitted and accommodated in the first retaining groove portion 6d by the above bending.
As a result, the movement of the first retaining main body portion 14a in the vertical direction between the lower end portion N3a of the male screw N3 and the upper surface of the stepped portion 5a of the fitting main body portion 5A is restricted, and the band portion 11 for confirming unopening. Does not come off from the first retaining groove 6d of the upper lid attaching part 5.

[Second retaining groove]
Next, on the outer peripheral surface of the mouth / neck portion 51 of the bottle 50, an annular lateral recess is formed between the lower end N1a of the male screw N1 and the flange F below the male screw N1. A second retaining groove 16d is formed which is closed on the lower end side of the attachment main body 5A (see FIG. 1).

[Second retaining piece]
In the illustrated example, eight second retaining pieces 22 are integrally formed at an interval of 45 degrees in the lower portion of the fitting main body portion 5A of the upper lid attaching portion 5.
As clearly shown in FIG. 7, the second retaining piece 22 includes a second retaining body portion 22a having a substantially L-shaped cross section, a base end of the second retaining body portion 22a, and the fitting body portion 5A. And a hinge portion 22b that is thin and foldable.

At the bottom of the fitting main body portion 5A to which the hinge portion 22b is integrally connected, a notch groove 21a into which the proximal end side of the second retaining main body portion 22a is fitted when the hinge portion 22b is bent about 180 degrees. The second retaining main body portion 22a is fitted and housed in the second retaining groove portion 16d by the above bending (see FIG. 1).
As a result, the movement of the second retaining main body portion 22a in the vertical direction is restricted between the lower end portion N1a of the male screw N1 and the upper surface of the flange F, and the upper lid attaching portion 5 is detached from the mouth-and-neck portion 51 of the bottle 50. There is nothing.

[Assembly method]
The bottle cap having such a structure is assembled as follows (see FIG. 2).
In assembling the upper lid attaching portion 5 and the upper lid 2, the inner cylinder portion 4 is inserted into the outer cylinder portion 6, and the upper lid 2 is bent inward as shown by the solid line from the dotted line in FIG. 1. The female screw N4 is screwed into the male screw N3 of the upper lid mounting portion 5, and the upper lid 2 is covered with the spout portion 6a of the outer cylinder portion 6 until the annular band portion 11 is aligned with the first retaining groove portion 6d. Then, the spout portion 6a is sealed.

At this time, the band portion 11 of the upper lid 2 is locked by the first retaining groove portion 6d and the vertical movement is restricted, and the lower end portion of the inner cylinder portion 4 protrudes from the lower end opening of the outer cylinder portion 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 inner wall of the peripheral wall part 9 c of the inner cylinder bottom cover 9 is inserted into the annular recess 4 a formed on the lower outer side of the inner cylinder part 4. 9 d of facing protrusions engage, it is stuck to the seal step part 92 arrange | positioned at the annular groove part 9a of the inner cylinder bottom cover 9 so that the lower end outer edge of the inner cylinder part 4 may be pressed, and between the lower ends of the inner cylinder part 4 It adheres with.
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 9e.

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 and neck portion 51 of the bottle 50 such as a plastic bottle, the outer cylinder portion 6 is inserted into the bottle mouth and neck portion 51, and the second retaining piece 22 is illustrated in FIG. In the state where it is bent inward from the dotted line 1 to the inside, the fitting main body 5A of the upper lid attaching portion 5 is turned in the closing direction to turn the female screw N2 of the fitting main body 5A into the male screw of the bottle mouth neck 51. N1 is screwed to the position where the retaining ring 5b exceeds the retaining ring 5b formed at the lower part of the mouth-and-neck part 51 of the bottle and the upper end of the mouth-and-neck part 51 is pressed against the annular protrusion 5b. The bottle 50 and the bottle cap 1 are firmly adhered to each other.
At this time, the upper lid mounting portion 5 is locked to the bottle neck portion 51 by the second retaining portion 16d and the vertical movement is restricted.

  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 main body 3 are separated, and the upper lid main body 3 is displaced upward, and the concave portion 13a and the convex portion are further separated. The engagement with 13b is also released.

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.
Moreover, in the said Example, although the 1st retaining piece and the 2nd retaining piece of the same structure were used, you may use the well-known retaining structure from which one differs.
Furthermore, a barrier layer made of a material having both gas barrier properties and light shielding properties such as an EVOH resin film alumina having gas barrier properties, and other known barrier materials may be interposed in the inner cylinder portion.
In addition, various designs can be made within a range that does not change the gist of the present 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 an exploded view which shows the attachment state of a bottle cap. It is a front view of an upper cover attaching part. It is a front view of an upper lid. It is sectional drawing of an inner cylinder bottom cover. It is a principal part enlarged view which shows the attachment state of a 1st retaining piece. It is a principal part enlarged view which shows the attachment state of a 2nd retaining piece.

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 1st retaining groove part 9 Inner cylinder Bottom cover 9a Fitting groove portion 9b Inner support portion 9c Peripheral wall portion 11 Unopened confirmation band portion 14 First retaining piece 14a First retaining body portion 14b Hinge portion 22 Second retaining piece 22a Second retaining body portion 22b Hinge part

Claims (5)

An upper lid mounting portion having an outer cylinder portion that is opened in the upper and lower sides to be inserted into the mouth and neck portion of the bottle and a fitting main body portion that is fitted to the mouth and neck portion of the bottle, and the top surface is blocked and the lower surface is opened. It has a cylindrical shape and has an inner cylinder part that accommodates an object to be stored such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and screwed onto the upper part of the upper lid mounting part to be crowned. And an inner cylinder bottom cover 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 lid is screwed in the opening direction. A bottle cap formed by advancing the inner cylinder part, dropping the inner cylinder bottom lid from the inner cylinder part by abutting with the lower end of the outer cylinder part, and discharging the contents in the inner cylinder part into the bottle Because
The upper lid has an annular unopened confirmation band portion that is partially connected to the lower portion thereof and restrained by the upper lid mounting portion,
The unopened confirmation band portion includes a first retaining body portion having a substantially L-shaped cross section at a lower portion thereof, and a hinge portion integrally connecting the first retaining body portion to the unopened confirmation band portion. A first retaining piece comprising:
A first retaining groove is formed between the lower end of the male screw formed on the upper lid attaching portion and the upper surface of the fitting main body, and is closed by the unopened confirmation band when attached,
The first retaining piece is folded back to the inside of the band portion for unopened confirmation via the hinge portion and stored in the first retaining groove portion,
A bottle cap characterized in that when the upper lid is separated from the band portion for unopened confirmation, the movement of the band portion for unopened confirmation can be restricted in the vertical direction. An upper lid mounting portion having an outer cylinder portion that is opened in the upper and lower sides to be inserted into the mouth and neck portion of the bottle and a fitting main body portion that is fitted to the mouth and neck portion of the bottle, and the top surface is blocked and the lower surface is opened It has a cylindrical shape and has an inner cylinder part that accommodates an object to be stored such as fine powder of tea leaves. The inner cylinder part is inserted into the outer cylinder part and screwed onto the upper part of the upper lid mounting part to be crowned. And an inner cylinder bottom cover 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 lid is screwed in the opening direction. A bottle cap formed by advancing the inner cylinder part, dropping the inner cylinder bottom lid from the inner cylinder part by abutting with the lower end of the outer cylinder part, and discharging the contents in the inner cylinder part into the bottle Because
A second removal body comprising a second retaining body portion having a substantially L-shaped cross section at a lower portion of the fitting body portion of the upper lid attaching portion, and a hinge portion integrally connecting the second retaining body portion to the fitting body portion. Has a stop piece,
A second retaining groove formed between the lower end of the male screw of the mouth and neck of the bottle and the lower flange thereof, which is closed on the lower end side of the fitting main body when mounted;
The second retaining piece is folded back to the inside of the fitting main body part via the hinge part and stored in the second retaining groove part,
A bottle cap characterized in that the movement of the upper lid attaching portion screwed to the mouth and neck of the bottle can be restricted in the vertical direction. A second removal body comprising a second retaining body portion having a substantially L-shaped cross section at a lower portion of the fitting body portion of the upper lid attaching portion, and a hinge portion integrally connecting the second retaining body portion to the fitting body portion. Has a stop piece,
A second retaining groove formed between the lower end of the male screw of the mouth and neck of the bottle and the lower flange thereof, which is closed on the lower end side of the fitting main body when mounted;
The second retaining piece is folded back to the inside of the fitting main body part via the hinge part and stored in the second retaining groove part,
The bottle cap according to claim 1, wherein a movement of the upper lid attaching portion screwed to the mouth and neck portion of the bottle can be restricted in the vertical direction. An inner cylinder bottom cover is formed between an annular peripheral wall portion that rises along the outer periphery, an inner support portion that is set concentrically smaller inside the peripheral wall portion than the peripheral wall portion, and the inner support portion and the peripheral wall portion. And an annular fitting groove for fitting the lower end of the inner cylinder part,
The inner support portion is a ring-shaped inner wall portion that stands up against the peripheral wall portion, projects outward at the lower portion of the inner wall portion, extends to a midway position at the bottom of the fitting groove portion, and abuts the lower end of the inner cylinder portion The bottle cap according to claim 1, further comprising an annular sealing step portion.   The annular auxiliary seal part which abuts with the lower end of an outer cylinder part and seals the inside of an inner cylinder part airtightly is fixed to the upper end of the surrounding wall part of an inner cylinder bottom cover, It is characterized by the above-mentioned. Bottle cap.

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