JP2021054425A - Cap for bottle mouth - Google Patents

Abstract

To create a cap for a bottle mouth capable of suppressing liquid leakage from a bottle mouth portion by preventing a decrease in the degree of sealing even if a bottle is reclosed (recapped) in an incomplete state.SOLUTION: A cap 1 for a bottle mouth is integrally molded with an upper lid portion 2, a sealing cylinder portion 3 that is hung on an outer peripheral edge of the upper lid portion 2 and is separately provided with respect to the upper lid portion 2, and a plug body portion 4 that is hung on a lower surface of the upper lid portion 2 and is detachably fitted to a bottle mouth portion 21. A locked portion 8 that can be locked to a locking portion 22 provided around an outer peripheral surface of the bottle mouth portion 21 is formed on an inner peripheral surface of the sealing cylinder portion 3. A first seal portion 13 that is tightly fitted near an upper end of the bottle mouth portion 21 and a second seal portion 14 which is located below the first seal portion 13 and presses an inner peripheral surface of the bottle mouth portion 21 are provided on an outer peripheral surface of the plug body portion 4.SELECTED DRAWING: Figure 3

Description

The present invention relates to a bottle mouth cap attached to a bottle mouth portion of a bottle body.

As prior art related to the bottle mouth cap, the following Patent Document 1 describes a bottle stopper provided with an inner stopper attached to the bottle mouth portion and a side portion covering the bottle mouth portion.
The bottle stopper described in Patent Document 1 is provided from a notch 21 provided in the side portion 20 upward from the lower end portion, an orbiting portion 23a that orbits along the outer periphery of the side portion 20, and the orbiting portion 23a. A thin-walled portion 23 in which inclined portions 23b formed upward are alternately and continuously formed, and a separated thin-walled portion 15 that circulates along the outer periphery of the side portion 20 at the boundary between the head portion 12 and the side portion 20. , An engaging portion 24 provided on the inner side surface of the side portion 20 and locked to the annular engaging portion A2 of the bottle A, and a gap portion provided in the engaging portion 24 corresponding to the position where the thin-walled portion 23 is provided. The outer shape of the edge portion 14 of the head portion 12 is formed to be larger than the outer shape of the bottle mouth portion A1. Then, an engaging portion 24 projecting in the inner diameter direction is integrally projected on the inner side surface above the side portion 20, and when the inner plug 10 is attached to the bottle mouth portion A1 after filling the bottle A with the content liquid. Since the engaging portion 24 engages with the annular engaging portion A2 provided on the outer peripheral surface of the bottle mouth portion A1, the bottle A can be closed.

Further, when opening the bottle stopper, the picking piece 22 is picked with a finger and pulled up in the circumferential direction, and the thin-walled portion 23 and the separated thin-walled portion 15 continuously formed from the cut portion 21 are broken, and the inner stopper 10 is opened. Since the inner plug 10 is exposed by separating the inner plug 10 and the side portion 20, and only the inner plug 10 is attached to the bottle A, the inner plug 10 can be easily opened and re-closed (recapped). Is possible.

Japanese Unexamined Patent Publication No. 2017-197196

The bottle A closed with the bottle mouth cap is used as a container for sake, for example, but the sake may not be completely consumed at one time, in which case the bottle A will be stored in a re-closed state. .. At that time, for example, the bottle A may be left on its side for a long period of time, and if it is not re-closed in a perfect state, the degree of sealing may decrease.

According to the present invention, in order to solve the above-mentioned problems in the prior art, it is possible to prevent liquid leakage from the bottle mouth portion by preventing a decrease in the degree of sealing even if the bottle is re-closed (recapped) in an incomplete state. The challenge is to create a cap for the bottle mouth.

Among the means for solving the above problems, the main means of the present invention is
The upper lid portion, the sealing cylinder portion that is hung on the outer peripheral edge of the upper lid portion and is provided separately from the upper lid portion, and the sealing cylinder portion that is hung on the lower surface of the upper lid portion and is detachably fitted to the bottle mouth portion. A bottle mouth cap that has a matching stopper and is integrally molded.
On the inner peripheral surface of the sealing cylinder portion, a locked portion that can be locked to the locking portion provided around the outer peripheral surface of the bottle mouth portion is formed.
The outer peripheral surface of the stopper body is located below the first seal portion and the first seal portion that are tightly fitted to the inner peripheral surface of the upper end of the bottle mouth portion, and the inner peripheral surface of the bottle mouth portion can be pressed. It is characterized in that a second seal portion is provided.
In the main means of the present invention, the first sealing portion provided on the plug body portion is tightly fitted to the upper inner peripheral surface of the bottle mouth portion to achieve sealing. Further, since the plurality of convex ribs constituting the second seal portion achieve the seal by pressing the inner peripheral surface of the bottle mouth portion at the lower position of the first seal portion, the bottle is re-closed (recapped) even in an incomplete state. ), It is possible to prevent a decrease in the degree of sealing, and as a result, prevent liquid leakage from the bottle mouth.

Further, another means of the present invention is obtained by adding a means that the second seal portion is formed of convex ribs arranged in an annular shape or a spiral shape in addition to the main means.
With the above means, a reliable seal between the outer peripheral surface of the plug body portion and the inner peripheral surface of the bottle mouth portion can be achieved.

Further, another means of the present invention is obtained by adding a means that a plurality of convex ribs are arranged at intervals in the axial direction in addition to the above means.
In the above means, it can be achieved that at least one or more convex portions among the plurality of convex portions seal between the outer peripheral surface of the plug body portion and the inner peripheral surface of the bottle mouth portion.

Further, another means of the present invention is added to the above means that the convex rib is formed at the position of the lower end of the plug body portion, and the lower surface of the convex rib and the lower end of the plug body portion form the same plane. It is a thing.
In the above means, the blocking member is more easily and surely adhered and fixed to the lower end of the plug body and the lower surface of the convex rib, and the content liquid on the bottle body side and the plug body are completely blocked to transfer the odor. Can be achieved to suppress more effectively.

Further, in another means of the present invention, the sealing tube portion is horizontally and ruptibly connected to any of the above means between the side wall portion covering the bottle mouth portion and the outer peripheral wall and the side wall portion of the upper lid portion. It is formed by having a horizontal weakening portion, a notch provided at the lower end of the side wall portion, and an inclined weakening portion arranged in an inclined manner and ruptibly arranged between the horizontal weakening portion and the notch portion. It is the addition of the means of being present.
In the above means, it is possible to achieve the separation of the sealing cylinder portion from the upper lid portion and the sealing cylinder portion by breaking the inclined weakened portion and the flattened portion.

Further, in the other means of the present invention, a plurality of horizontal band-shaped window holes penetrating in the radial direction are formed on the side wall portion of the above means intermittently in the circumferential direction.
The locked portion is foldably connected to the inside of the window hole via a connecting portion formed so as to be elastically deformable toward the inside of the sealing cylinder portion, and the locked portion is directed toward the inside of the sealing cylinder portion. In the folded state, it is locked by a locking portion provided around the outer peripheral surface of the bottle mouth portion.
In the above means, when the bottle mouth cap is attached to the bottle mouth portion, the locked portion enters the locking portion while sliding on the outer peripheral surface of the bottle mouth portion, so that the stopper portion with respect to the bottle mouth portion Regulations on the upward movement of the can be achieved.

Further, another means of the present invention is obtained by adding a means that a blocking member is adhesively fixed to the lower end of the plug body portion in addition to any of the above means.
With the above means, it is possible to suppress the odor transfer of the content liquid such as the alcohol odor to the plug body side.

In the present invention, since a plurality of convex ribs constituting the second seal portion provided on the stopper body portion can be pressed against the inner peripheral surface of the bottle mouth portion, it is assumed that the bottle is re-closed (recapped) in an incomplete state. It is also possible to prevent a decrease in the degree of sealing and prevent liquid leakage from the bottle mouth.
Further, by adhesively fixing the film to the lower end of the stopper body portion, it is possible to suppress the odor transfer of the content liquid such as sake or vinegar to the stopper body portion side.

As an embodiment of the present invention, it is a front view of a bottle mouth cap showing a state before the locked portion is folded back. It is a front view of the bottle mouth cap which shows the state after the locked part is folded back. It is a half cross-sectional view of the bottle mouth cap which shows the state attached to the bottle mouth part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The bottle mouth cap of the present invention is made of glass such as a 1-square bottle (1800 ml bottle) or a No. 4 bottle (720 ml bottle) for holding sake such as sake and shochu and other content liquids (for example, soy sauce, vinegar, etc.). It is attached to the bottle mouth portion 21 of the bottle body 20 and is for sealing and sealing the inside of the bottle body 20. The bottle body 20 is not limited to glass, and may be made of ceramic, metal, or the like.
In the following description, the vertical direction along the container axis O of the bottle body 20 is the axial direction, the direction orthogonal to the container axis O is the radial direction, and the direction of orbiting around the container axis O is the circumferential direction.

As an embodiment of the present invention, FIG. 1 is a front view of a bottle mouth cap showing a state before the locked portion is folded back, and FIG. 2 is a front view of the bottle mouth cap showing a state after the locked portion is folded back. FIG. 3 is a half cross-sectional view of a bottle mouth cap showing a state of being attached to the bottle mouth portion.
The bottle mouth cap 1 of the present invention includes an upper lid portion 2, a sealing cylinder portion 3 connected to the upper lid portion 2, and a plug body portion 4 provided on the lower surface of the upper lid portion 2. ing.
As shown in FIGS. 1 and 2, an outer peripheral wall 5 is suspended from the outer peripheral edge of the upper lid portion 2. The outer peripheral wall 5 is composed of a plurality of vertical grooves, and a knurl 5a that exerts a non-slip effect in the circumferential direction is formed.
Below the outer peripheral wall 5 constituting the upper lid portion 2, a sealing cylinder portion 3 formed by forming a side wall portion 6 in a cylindrical shape is continuously provided. Between the outer peripheral wall 5 on the upper lid portion 2 side and the side wall portion 6 on the sealing cylinder portion 3 side, a horizontally weakened portion 11 formed so as to be breakable via a thin wall portion 11a is provided around the circumference. By breaking the horizontal weakening portion 11, the sealing cylinder portion 3 can be separated from the upper lid portion 2.

A window hole 7 penetrating in the radial direction is formed at the center position of the sealing cylinder portion 3 in the axial direction. The window holes 7 have a horizontal band shape (rectangular shape having long sides in the circumferential direction), and a plurality of window holes 7 are formed at predetermined intervals in the circumferential direction.
An inclination weakening portion 12 is formed in the sealing cylinder portion 3. The inclination weakening portion 12 is a first inclination weakening portion 7 arranged in an inclined manner between a corner portion on one end side of the upper edge portion 7a in the circumferential direction and the horizontal weakening portion 11 of any one window hole 7. The second inclined weakening portion 12b is arranged in an inclined manner between the portion 12a and the corner portion on one end side of the lower edge portion 7b in the circumferential direction and the notch portion 10 formed at the lower end of the sealing cylinder portion 3. It is composed of and. Both the first inclination weakening portion 12a and the second inclination weakening portion 12b are formed so as to be fractureable through the thin-walled portion, and both are inclined in the same direction (in the directions of rising to the right in FIGS. 1 and 2). It is set. A knob portion 6a formed in a convex curved shape is provided at a portion of the lower end of the side wall portion 6 at a lower position of the second inclination weakening portion 12b and continuous from the notch portion 10.

Further, in the upper edge portion 7a of each window hole 7, a locked portion 8 projecting in a convex curved surface shape toward the outside in the radial direction is continuously provided via a connecting portion 9 formed so as to be elastically deformable, and is sealed. It is arranged so as to be folded back toward the inner peripheral surface of the side wall portion 6 forming the tubular portion 3. As shown in FIG. 3, the locked portion 8 is folded back toward the inner peripheral surface of the sealing cylinder portion 3, and in this state, the locking portion 22 is provided around the outer peripheral surface of the bottle mouth portion 21 in a concave curved shape. By being locked to the bottle mouth portion 21, the movement of the bottle mouth cap 1 with respect to the bottle mouth portion 21 in the axial direction is restricted. The convex curved surface-shaped locked portion 8 and the concave curved surface-shaped locking portion 22 are formed with the same radius of curvature.

As shown by the alternate long and short dash line in FIG. 3, the inner peripheral surface of the locked portion 8 facing inward in the radial direction before folding back is the inner peripheral surface of the side wall portion 6 in a state of facing inward in the radial direction after folding back. Close to the surface. Then, the end portion 8a of the locked portion 8 which was located axially lower than the connecting portion 9 before folding back is located at a position axially above the connecting portion 9 after folding back, and is located on the side wall portion 6. Of these, it is possible to contact the stepped portion 6b provided on the inner peripheral surface near the lower end of the horizontal weakened portion 11, and further upward movement in the axial direction is restricted.

The plug body portion 4 is a cylindrical member having a cavity formed inside, and its inner peripheral surface is formed without a step, but the outer peripheral surface has a diameter dimension different from the lower surface to the lower end of the upper lid portion 2. Has been formed. That is, the upper end portion 4A from the lower surface of the upper lid portion 2 to the substantially intermediate position in the axial direction is formed with a diameter larger than that of the lower end portion 4B from the substantially intermediate position to the lower end. A plurality of vertical ribs 4a are arranged on the outer peripheral surface of the upper end portion 4A at predetermined intervals in the circumferential direction. The axial length dimension of the vertical rib 4a is formed shorter than the axial length dimension of the upper end portion 4A, and the lower end of the vertical rib 4a can come into contact with the upper end of the bottle mouth portion 21. Of the upper end portion 4A, the lower portion of the upper end portion 4A (the portion located below the lower end of the vertical rib 4a) is formed with a size slightly larger than the inner peripheral surface of the bottle mouth portion 21, and the bottle mouth portion is formed. It functions as a first seal portion 13 that seals by tightly fitting to the upper inner peripheral surface of 21. Further, on the outer peripheral surface of the lower end portion 4B, a second seal portion 14 having an annular convex rib 14a that can come into contact with the inner peripheral surface of the bottle mouth portion 21 is formed.

In this embodiment, a case is shown in which a plurality of (three in this embodiment) convex ribs 14a constituting the second seal portion 14 are provided on the outer peripheral surface of the lower end portion 4B, but at least one convex rib 14a is provided. Any configuration may be provided as described above. Further, it is preferable that the convex rib 14a is formed at the position of the lower end of the plug body portion 4, and the lower surface of the convex rib 14a and the lower end of the plug body portion 4 form the same plane.
Further, when a plurality of convex ribs 14a are used, it is preferable that the convex ribs 14a are arranged at a predetermined interval in the axial direction. The convex ribs 14a constituting the first seal portion 13 and the second seal portion 14 are elastically deformable in the radial direction, and the radial end surface of the convex rib 14a faces the inner peripheral surface of the bottle mouth portion 21 radially outward. A configuration that can be pressed is preferable.

Further, a blocking member 15 is adhesively fixed to the lower end of the plug body portion 4. The blocking member 15 is made of, for example, a film-shaped PET resin or aluminum foil, and can suppress the transfer of the odor of the content liquid such as alcohol odor to the bottle mouth cap 1 side, particularly to the plug body portion 4. It is possible.
In particular, in a configuration in which the convex rib 14a is formed at the position of the lower end of the plug body 4 and the lower surface of the convex rib 14a and the lower end of the plug body 4 form the same plane, the blocking member 15 is the lower end of the plug body 4. Not only that, since it is adhered and fixed over a wider area including the lower surface of the convex rib 14a, it is easier and more reliable to adhere than when the blocking member 15 is adhered and fixed only to the lower end of the plug body portion 4. Can be fixed. Moreover, the radial end surface of the blocking member 15 comes into contact with the inner peripheral surface of the bottle mouth portion 21, and the content liquid on the bottle body 20 side and the plug body portion 4 can be completely blocked, so that the odor can be smelled. Transfer can be suppressed more effectively.

In order to attach the bottle mouth cap 1 having the above configuration to the bottle mouth portion 21, first, the locked portion 8 and the sealing cylinder portion 3 are configured while elastically deforming the connecting portion 9 using a jig or the like. Push back toward the inside of the side wall portion 6. As a result, the locked portion 8 is set to face inward in the radial direction, and the end portion 8a is set to be located above the connecting portion 9 (see FIG. 3).
Next, the bottle mouth cap 1 is tapped, and the stopper body portion 4 is fitted to the bottle mouth portion 21. At this time, since the lower end of the vertical rib 4a on the plug body portion 4 side abuts on the upper end of the bottle mouth portion 21, the further downward movement of the bottle mouth cap 1 with respect to the bottle mouth portion 21 is restricted. At the same time, the locked portion 8 invades the locking portion 22 while sliding on the outer peripheral surface of the bottle mouth portion 21, and the locking is completed, and the bottle mouth cap 1 moves upward with respect to the bottle mouth portion 21. Is regulated. Further, the first seal portion 13 on the plug body portion 4 side pushes into the bottle mouth portion 21 to seal the bottle mouth portion 21. At the same time, a plurality of convex ribs 14a constituting the second sealing portion 14 press each of the inner peripheral surfaces of the bottle mouth portion 21 to seal the bottle mouth portion 21. Therefore, the bottle mouth portion 21 can be set to a highly sealed state in which the bottle mouth portion 21 is tightly sealed. Therefore, the bottle mouth portion 21 can be set to a highly sealed state in which the bottle mouth portion 21 is tightly sealed. The work of attaching the bottle mouth cap 1 to the bottle mouth portion 21 is performed using a stoppering machine (not shown).

Next, a method of opening the bottle mouth cap having the above configuration from the bottle mouth portion will be described.
First, the second inclination weakening portion 12b is broken by pulling up the knob portion 6a provided at the lower end of the side wall portion 6 while pinching. Then, the breakage of the second inclination weakening portion 12b reaches the lower edge portion 7b of the window hole 7, and by continuously pulling up, the first inclination weakening portion 12a is broken through the upper edge portion 7a of the window hole 7, and the first inclination weakening portion 12a is broken. The break reaches the horizontal weakening portion 11.
Subsequently, the finger holding the picking portion 6a is pulled around the sealing cylinder portion 3 while rotating in one direction in the circumferential direction. Then, since the horizontal weakening portion 11 breaks over the entire circumference, the entire sealing cylinder portion 3 provided with the locked portion 8 can be separated from the upper lid portion 2 and the plug body portion 4.
After separation, the plug body portion 4 is tightly fitted in the bottle mouth portion 21 and tightly sealed, and the upper lid portion 2 is exposed on the bottle mouth portion 21. Therefore, by opening the bottle by pulling it out while grasping the side wall portion 5 of the upper lid portion 2, the content liquid in the bottle body 20 can be poured out through the bottle mouth portion 21.

In the bottle mouth cap 1 having the above configuration, it is possible to reclose (recap) the bottle mouth cap 1 by tightly fitting the stopper body portion 4 into the bottle mouth portion 21 even after opening the cap.
In this restart plug, when the plug body portion 4 is correctly fitted in the bottle mouth portion 21, the first seal portion 13 seals the upper inner peripheral surface of the bottle mouth portion 21 and the second seal portion 13 is similarly described above. Since the plurality of convex ribs 14a constituting the two sealing portions 14 seal the inner peripheral surfaces of the bottle mouth portion 21, the bottle mouth portion 21 can be firmly sealed.

On the other hand, when the stopper 4 is fitted into the bottle mouth 21 in an incorrect and incomplete state, for example, the stopper 4 is slightly tilted with respect to the container shaft O or the stopper 4 is incomplete. When the plug body portion 4 is fitted into the bottle mouth portion 21 in an incomplete state in which the stopper is not inserted all the way and is fitted shallowly, the degree of sealing in the first sealing portion 13 tends to decrease.
However, in the present invention, a plurality of annular convex ribs 14a are provided as the second seal portion 14 under the first seal portion 13, and the plurality of convex ribs 14a are inner circumferences in the bottle mouth portion 21. Since it is possible to prevent a decrease in the degree of sealing by pressing each surface, it is possible to effectively prevent leakage of the content liquid.

Although the configuration of the present invention and its action and effect have been described above with reference to Examples, the embodiments of the present invention are not limited to the above Examples.
For example, in the above embodiment, the case of the annular convex rib 14a as the second seal portion 14 has been described, but the present invention is not limited to this, and the second seal portion 14 is arranged in a spiral shape. The convex rib 14a may be formed.

Further, in the above embodiment, a plurality of window holes 7 are provided in the side wall portion 6 of the sealing cylinder portion 3, and the first inclination weakening portion 12a and the second inclination weakening portion 12b are continuously provided above and below the window hole 7. As shown and described, the present invention is not limited to this, and the first inclined weakening portion 12a and the second inclined weakening portion 12b are arranged in succession in the inclined weakening portion 12 which does not have the window hole 7. There may be.

Further, in the above embodiment, the configuration in which the locked portion 8 is continuously provided to the upper edge portion 7a of the window hole 7 via the connecting portion 9 has been described, but the present invention is not limited to this. For example, a member having a substantially C-shape in a plan view including a locking portion may be separately arranged inside the sealing cylinder portion 3.

The present invention can be used in a wider range of applications in the field of bottle mouth caps.

1: Bottle mouth cap 2: Top lid part 3: Sealing cylinder part 4: Plug body part 4A: Upper end part 4B: Lower end part 4a: Vertical rib 5: Outer wall 5a: Laurette 6: Side wall part 6a: Picking part 6b: Step Part 7: Window hole 7a: Upper edge part 7b of the window hole: Lower edge part 8 of the window hole: Locked part 8a: End part of the locked part 9: Connecting part 10: Notch part 11: Horizontal weakening part 11a: Thin-walled portion 12: Inclination weakening portion 12a: First inclination weakening portion 12b: Second inclination weakening portion 13: First seal portion 14: Second seal portion 14a: Convex rib 15: Blocking member 20: Bottle body 21: Bottle Mouth 22: Locking part

Claims (7)

The upper lid portion (2), the sealing cylinder portion (3) hanging from the outer peripheral edge of the upper lid portion (2) and separately provided with respect to the upper lid portion (2), and the upper lid portion (2). A bottle mouth cap (1) that is integrally molded with a stopper body portion (4) that is hung on the lower surface of the bottle mouth portion (21) and that is detachably fitted to the bottle mouth portion (21). ,
On the inner peripheral surface of the sealing cylinder portion (3), a locked portion (8) that can be locked to the locking portion (22) provided around the outer peripheral surface of the bottle mouth portion (21) is formed. ,
On the outer peripheral surface of the plug body portion (4), a first seal portion (13) that is tightly fitted to the inner peripheral surface of the upper end of the bottle mouth portion (21) and a portion below the first seal portion (13). A bottle mouth cap characterized in that a second seal portion (14) is provided at a position and capable of pressing the inner peripheral surface of the bottle mouth portion (21). The bottle mouth cap according to claim 1, wherein the second seal portion (14) is formed of convex ribs (14a) arranged in an annular shape or a spiral shape. The bottle mouth cap according to claim 2, wherein a plurality of convex ribs (14a) are arranged at intervals in the axial direction. Claim 2 or 3 in which the convex rib (14a) is formed at the position of the lower end of the plug body portion (4), and the lower surface of the convex rib (14a) and the lower end of the plug body portion (4) form the same plane. Cap for bottle mouth described in. The sealing cylinder portion (3) can be horizontally and broken between the side wall portion (6) covering the bottle mouth portion (21), the outer peripheral wall (5) of the upper lid portion (2), and the side wall portion (6). Between the connected horizontal weakening portion (11), the notch portion (10) provided at the lower end of the side wall portion (6), and the horizontal weakening portion (11) and the notch portion (10). The cap with a sealing portion according to any one of claims 1 to 4, which is formed by having an inclined weakening portion (12) arranged so as to be inclined and breakable. A plurality of horizontal band-shaped window holes (7) penetrating in the radial direction are formed intermittently in the circumferential direction on the side wall portion (6).
The locked portion (8) is foldably connected to the inside of the sealing cylinder portion (3) via a connecting portion (9) formed so as to be elastically deformable inside the window hole (7). In a state where the locked portion (8) is folded back toward the inside of the sealed cylinder portion (3), the locked portion (8) is engaged with the locking portion (22) provided around the outer peripheral surface of the bottle mouth portion (21). The cap with a sealing portion according to claim 5, which is stopped. The cap with a sealing portion according to any one of claims 1 to 6, wherein a blocking member (15) is adhesively fixed to the lower end of the plug body portion (4).

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