JP7548765B2 - Bottle with cap - Google Patents

Description

The present invention relates to a bottle (e.g., a glass bottle) with a cap.

A known bottle cap includes a plug portion that closes the mouth of the bottle body and an attachment tube that is connected to the plug portion and attached to the outer peripheral surface of the mouth portion (Patent Document 1).
Specifically, a cylindrical top having a top is attached to the upper end of the mounting tube via an annular break, and a plug is hung down from the top wall of the top.
In addition, a number of locking protrusions are provided at appropriate positions on the inner surface of the mounting tube, and these locking protrusions are fitted into locking recesses formed on the outer surface of the bottle mouth, thereby preventing the mounting tube from slipping out of the bottle mouth.
The reason for this structure is that with this type of bottle, after it is filled with the contents, such as a beverage, and closed with a cap, it may be sterilized by spraying it with a relatively high-temperature shower, and this prevents the cap from coming off due to an increase in internal pressure.

Patent Publication 2019-119460

In the structure disclosed in Patent Document 1, the inward protruding length (protruding amount) of the locking protrusions needs to be designed in accordance with the depth of the locked recesses.
However, when the cap is molded in a mold using synthetic resin or the like, the area where the locking protrusion is to be formed is forcibly removed from the mold, which can cause the area to curl up and make it impossible to achieve the designed amount of protrusion.
"Curling" refers to the phenomenon in which a molded product is deformed due to friction when it is removed from a mold. This curling occurs due to insufficient draft angle, etc.
If this occurs, the locking protrusion cannot be fitted accurately into the locked recess, and there is a possibility that the cap may come off.
In particular, when the bottle body is made of a material such as glass, which has a large molding error, the cap is likely to come off.

An object of the present invention is to provide a bottle equipped with a cap that has an improved locking force to the bottle body and is less likely to come off from the bottle mouth .

The first means includes a bottle body 2 having a bottle mouth 4 and a locking recess 6 formed on an outer peripheral surface 5 of the bottle mouth 4;
a cap 10 having a plug portion P for closing the bottle mouth portion, and an attachment tube 12 attached to the outer circumferential surface of the bottle mouth portion and connected to the plug portion P so as to maintain the bottle mouth portion closed by the plug portion P;
The cap 10 is provided with a protruding locking portion 15 that can be fitted into the locking recess 6 to prevent the attachment tube 12 from slipping out of the bottle mouth.
The protruding engagement portion 15 is
a protrusion body 16 for insertion into the engagement recess 6, the protrusion body 16 being bulging inward from an inner circumferential surface 13 of the mounting tube 12;
a flexible flap 20 integrally connected to the mounting tube 12 below the protruding portion main body 16;
The flap 20 is fitted into the engagement recess 6, and the protruding length a of the convex body 16 is set to be smaller than the depth d of the engagement recess 6,
The flap 20 is formed so as to be bent along the inner surface of the engagement recess 6 by an upward pushing operation , thereby covering the protrusion main body 16.
The flap 20 has a length that reaches the upper half 17b of the surface 17 of the convex main body 16 through the pushing operation, and is arranged so that when the convex engaging portion 15 is fitted into the engaging recess 6, the tip side of the flap 20 is clamped between the engaging recess 6 and the upper half 17b of the surface 17 of the convex main body 16.

This means is directed to a bottle cap having a convex locking portion 15 that can be fitted into a locking recess formed on the outer surface of the bottle mouth to prevent the attachment tube 12 from falling out of the bottle mouth (see Figures 1, 4 and 5).
As shown in Figure 2, the convex engaging portion 15 consists of a convex main body 16 for insertion into the engaging recess, which bulges inward from the inner surface 13 of the mounting tube 12, and a flexible flap 20 connected to the mounting tube 12 on the underside of the convex main body 16.
As shown in FIG. 1B, the flap 20 is formed so as to be capable of covering the protrusion main body 16 by pushing it upward.
According to this structure, the flap 20 and the convex main body 16 covered by the flap 20 can be doubly inserted into the engaging recess 6 (referred to as a double engagement state), thereby providing sufficient engaging force.
In this embodiment, as shown in FIG. 1B, the flap 20 has a length that reaches the upper half 17b of the surface 17 of the protrusion main body 16 by the pushing operation.
This structure ensures that the protrusion body 16 and the flap 20 are double-fitted into the engaging recess 6. This allows for strong engagement with the bottle mouth 4, and can adequately resist the upward force on the plug P when the internal pressure rises.

The second means has the first means, and the flap 20 is rotatably protruded inward from the inner surface 13 of the mounting tube 12 via a hinge 18, and when the stopper portion P is inserted into the bottle mouth portion, it is pushed up by the bottle mouth portion and rotates upward, so as to cover the convex portion main body 16.

In this embodiment, as shown in FIG. 2, the flap 20 is provided so as to protrude inward from the inner peripheral surface 13 of the mounting cylinder 12 via a hinge 18 so as to be rotatable.
1(A), by simply inserting the bottle mouth into the mounting cylinder 12, the flap 20 is pushed up by the bottle mouth and rotates upward, so that it can be formed to cover the protrusion main body 16. Therefore, it is easy to double-fit the protrusion main body 16 and the flap 20 into the engagement recess 6.

According to the invention relating to the first means, a convex locking portion 15 is provided that can be fitted into a locking recess formed on the outer peripheral surface of the bottle mouth, and the convex locking portion 15 consists of a convex main body 16 for insertion into the locking recess, which bulges inward from the inner peripheral surface 13 of the mounting tube 12, and a flexible flap 20 connected to the mounting tube 12 on the underside of the convex main body 16, and this flap can cover the convex main body 16 by being pushed upward, thereby improving the locking force of the locking means C with respect to the locking recess.
Furthermore, according to the invention relating to the first means, the flap 20 has a length that, when pushed in, reaches the upper half 17b of the surface of the convex main body 16, thereby achieving firm engagement with the bottle mouth 4.
According to the invention relating to the second means, the flap 20 protrudes inward from the inner surface 13 of the mounting tube 12 via the hinge 18. Therefore, by simply inserting the bottle mouth 4 into the mounting tube 12, the flap 20 is pushed up by the bottle mouth and covers the convex main body 16, making it easy to double-fit the convex main body 16 and the flap 20 into the engaged recess 6 .

FIG. 1 shows the configuration of a bottle with a cap in accordance with a first embodiment of the present invention, in which (A) is a half-sectional view of the main parts of the bottle (bottle mouth and cap), and (B) is an enlarged view of the main parts of the cap. FIG. 2 is a front view of a bottle cap used for the bottle of FIG. 1 in a molded state. 3A and 3B are explanatory views of the installation work of the bottle cap shown in FIG. 2, in which FIG. 3A shows the first stage of the installation work, and FIG. 3B shows the second stage of the installation work. FIG. 5 is a diagram showing the configuration of a bottle with a cap in accordance with a second embodiment of the present invention, in which (A) is a half-sectional view of the main parts of the bottle (bottle mouth and cap), and (B) is an enlarged view of the main parts of the cap. FIG. 11 is a diagram showing the configuration of a bottle with a cap in accordance with a third embodiment of the present invention, in which (A) is a half-sectional view of the main parts of the bottle (bottle mouth and cap), and (B) is an enlarged view of the main parts of the cap.

1 to 3 show a bottle equipped with a cap according to a first embodiment of the present invention.
This bottle is composed of a bottle body 2 and a bottle cap 10. For convenience of explanation, the basic structure of the bottle will be explained first, and characteristic features will be explained later.

The bottle body 2 has a bottle mouth portion 4 that is an opening at the upper end and stands upright from a body portion (not shown).
An annular engaging recess 6 is provided around the upper portion of the outer circumferential surface 5 of the bottle mouth 4. However, the structure of the engaging recess 6 can be modified as appropriate.
Further, an annular rib 7 is formed on the lower part of the outer circumferential surface 5 of the bottle mouth portion 4 .
In this embodiment, the bottle body 2 is formed as a glass bottle, but the material of the bottle body 2 may be a synthetic resin or the like, and can be changed as appropriate.

The bottle cap 10 has an attachment tube 12 attached to the outer peripheral surface of the bottle mouth 4, and includes a plug portion (closure portion) P connected to the attachment tube 12 and fitted into the bottle mouth 4.
In addition, the term "linked" refers to any structure that can fix the cap portion P to the mounting cylinder 12 to an extent that the cap portion P can maintain the closed state of the bottle mouth portion 4.
The mounting cylinder 12 has an inner peripheral surface 13 provided with a protruding locking portion 15 for fitting into the locked recess 6 .
The convex engaging portion 15 and the engaged recessed portion 6 form an engaging means C for preventing the attachment tube 12 from falling out of the bottle mouth portion 4 .

In this embodiment, as shown in Fig. 1A, the bottle cap 10 is composed of a plug body 30 which is the plug portion P described above, and a cap body 11 which is a separate member from the plug body. However, the plug body 30 and the cap body 11 may be integrally formed.
The stopper 30 may have any structure as long as it can close the bottle mouth 4. The stopper 30 in the illustrated example has a small-diameter lower half 30b suspended from a large-diameter upper half 30a via a downward step 32. The lower half 30b is tightly fitted into the bottle mouth 4, and the step 32 is abutted against the upper end surface of the bottle mouth 4.
In this embodiment, the cap body 11 is provided with a top portion 22 connected to the upper end side of the mounting tube 12 for preventing the plug 30 from slipping out.
The top portion 22 in the illustrated example has a connecting tube portion 23 extending upward from the upper end of the mounting tube 12 through the annular first breakage portion B1, and a top plate 24 is attached to the upper end of the connecting tube portion 23. The top plate 24 abuts against the upper surface of the plug 30.
When opening the bottle mouth 4, for example, the attachment tube 12 is held with one hand and the connecting tube portion 23 is held with the other hand, and the connecting tube portion 23 is rotated relative to the attachment tube 12 to break the first breaking portion B1. Then, the cap body 11 is removed from the bottle mouth 4, and the stopper 30 is pulled out from within the bottle mouth 4.
A stopper projection n is provided around the upper end of the inner surface of the mounting cylinder 12 to prevent the upper half 30a of the plug 30 from falling off.
Although not shown, an auxiliary break line may be formed from the first annular break portion B1 to the lower end of the mounting tube 12, avoiding the formation location of the protruding locking portion 15. In this case, the mounting tube can be removed by pinching the lower end of the mounting tube 12 near the lower end of the auxiliary break line and pulling it outward.
Moreover, the auxiliary breaking line and the tab need only be provided on the mounting tube 12 and have a structure that connects to the first breaking portion B1.

In the present invention, the convex engaging portion 15 is composed of a convex main body 16 and a flap 20 .
In the preferred illustrated example, one protruding body 16 is provided around the inner surface of the mounting tube 12, and an appropriate number (for example, four or six) of flaps 20 are provided at multiple locations in the circumferential direction.
Each flap 20 is folded upward around a hinge 18 (described later) and overlaps with the surface 17 of the protrusion main body 16, thereby forming a protruding locking portion 15 at each overlapping point. In addition, it is sufficient that the flap 20 folded upward overlaps with a portion of the surface of the protrusion main body 16.
However, these structures can be modified as appropriate.

The protrusion main body 16 is a protrusion that bulges inward from the inner circumferential surface 13 of the mounting tube 12 and is intended to be inserted into the locked recess.
The convex body 16 in the illustrated example is an annular inner rib formed on the inner peripheral surface of the mounting tube 12, but the shape thereof can be modified as appropriate.
For example, when an auxiliary break line is formed from the first auxiliary break line B1 to the lower end of the mounting tube 12 as described above, it is advisable to omit forming the protrusion main body at the location where the auxiliary break line passes.
As shown in FIG. 1B, the inward protruding length (protruding amount) a of the protruding portion main body 16 is smaller than the depth d of the engaged recess 6 .
By doing this, when viewed in a vertical cross section passing through the cylindrical axis of the mounting tube 12, a space (clamping allowance) for clamping the flap is formed between the contour of the surface 17 of the convex main body 16 and the contour of the engaged recess 6.
However, a structure in which the protruding length of the convex body 16 is greater than the depth of the engaging recess 6, as opposed to the illustrated example, and the convex body 16 covered with the flap 20 is forcibly pressed into the engaging recess 6, also falls within the technical scope of the present invention.

As shown in FIG. 2, the flap 20 is integrally connected to the mounting tube 12 on the lower side of the convex main body 16 via a hinge 18, and is configured to be rotatable (swingable in the vertical direction) around the hinge 18.
In this specification, the term "flap" is used to mean a movable plate portion supported in a cantilever manner relative to a certain object (in this invention, the mounting tube).
The flap 20 is flexible and is formed so as to be deformable along the surface 17 of the protrusion main body 16 when pushed up from below.
The flap 20 extends inward (downward and inward in the illustrated example) from the hinge 18 and is formed so as to be pushed up by the upper end surface of the bottle mouth 4 when the stopper portion P is inserted (corked) into the bottle mouth 4.
With this configuration, the flap 20 is folded upward as the fitting operation is performed, and the surface 17 of the protrusion main body 16 is covered (coated) with the flap 20 .
When the convex locking portion 15 fits into the locked recess 6 , the convex main body 16 and the flap 20 covering the convex main body 16 are pressed into the locked recess 6 and fitted into the inner surface of the locked recess 6 .
In other words, not only the protrusion main body 16 but also the flap 20 overlapping the surface 17 of the protrusion main body 16 is fitted into the locked recess 6 (double fitting state).
In other words, the flap 20 is fitted in a bent state along the inner surface of the engaging recess 6, and the convex main body 16 is inserted into the inside of this flap, creating a double fitting structure, thereby achieving a high engagement force of the convex engaging portion 15 with the bottle mouth 4.
In addition, the flap 20 in the illustrated example is substantially rectangular when viewed from the cylindrical diameter direction of the mounting cylinder 12 as shown by the dotted line in FIG. 2, but the shape can be changed as appropriate.
As described above, the substantial amount of protrusion can be increased by overlapping the flap 20 with the protruding portion main body 16. Therefore, when designing the locking means corresponding to the locking recess of the bottle body, the amount of protrusion of the locking means can be freely set without worrying about the problem of the locking means turning over during removal from the mold, and this makes it possible to realize a sufficient locking force.

In this embodiment, the flap 20 is folded upward as shown in FIG. 1(A) and is formed to a length that enables it to reach the upper half 17b of the surface 17 while covering the surface 17 of the convex main body 16.
By doing so, when the internal pressure of the bottle body 2 rises, the tip of the flap 20 is clamped between the protruding body 16 and the locked recessed portion 6 as shown in FIG. 1(B).
Therefore, the upward stress f1 acting on the projection main body 16 as the internal pressure increases can be countered by a reaction f2 from the locked recess 6 side, so that a sufficient engagement force can be exerted.

In the configuration of this embodiment, the projection length (projection amount) a of the projection main body 16 can be reduced at least by the thickness t of the flap 20 shown in FIG.
Therefore, by appropriately selecting the thickness t of the flap 20, the protruding length a of the convex body 16 can be designed to be small.
This makes it possible to reduce the projection length a of the protruding portion main body 16 to a degree that allows for forced removal from the die. This prevents the protruding portion main body 16 from curling up at the formation site during molding in the die, and improves the locking force of the locking means C with respect to the locked recess 6.

In this embodiment, the hinge 18 is disposed with a gap i between it and the protrusion main body 16, as shown in FIG. 1(B).
In this configuration, the outer surface of the flap 20 in the upwardly folded state (corresponding to the lower surface in the formed state) is in close contact with the inner surface of the engagement recess 6. On the other hand, a gap g is formed between the inner surface of the flap 20 in the folded state (corresponding to the upper surface in the formed state) and the lower half 17a of the surface 17 of the protrusion main body 16.
With this structure, even if the vertical width of the engaging recess 6 deviates slightly from the design value due to molding errors on the bottle body 2 side, the convex engaging portion 15 can be fitted into the engaging recess 6.
This embodiment is advantageous for bottles such as glass bottles, which have relatively large molding errors.

In this specification, "covered" refers to a state in which the surface 17 of the projection body 16 to be covered is covered with a covering material (flap 20) arranged roughly along the surface 17. Therefore, this also applies to the case in which there is a small gap g between the projection body 16 and the flap 20 as shown in Fig. 1(B).
In the illustrated example, a shallow recess r is formed on the inside of the mounting cylinder 12 between the hinge 18 and the lower end of the mounting cylinder 12 .

The cap body 12 can be molded in a state in which the plug 30 is removed from the state shown in Fig. 2. The contour of the inner surface of the cap body 12 is preferably formed using a plurality of split molds (not shown).
For example, a first mold is used to define the lower surface of the flap 20 and the inner surface of the mounting tube portion below the flap 20, and a second mold is used to define the remaining portion of the inner surface of the cap 10 (including the upper surface of the flap 20 and the surface 17 of the convex body 16).
When the second die is to be removed, it is sufficient to forcefully remove it from the protruding portion main body 16 .
When designing a convex engaging portion 15 that fits into an engaging recess 6 of a certain depth, the configuration of the present invention makes it possible to reduce the protruding length a of the convex portion main body 16 by the thickness t of the flap 20, compared to when it is designed as a single convex portion.

In the above configuration, when the bottle mouth 4 is inserted into the attachment tube 12 of the bottle cap from the state shown in Figure 2 and the attachment tube 12 is pushed downward, the tip 20a of the flap 20 hits the upper surface of the bottle mouth 4 as shown in Figure 3 (A), and then the flap 20 is folded upward around the hinge 18 as shown in Figure 3 (B).
When the mounting tube 12 is further pressed downward, the flap 20 and the protruding portion main body 16 climb over the bottle mouth portion above the locked recess 6 and are fitted into the locked recess 6 .
Then, the mounting cylinder 12 is fitted onto the outer peripheral surface 5 of the bottle mouth 4 , and the plug portion P is fitted into the bottle mouth 4 .

Other embodiments of the present invention will be described below. In these descriptions, explanations of structures that are the same as those in the first embodiment will be omitted.

FIG. 4 shows a bottle with a cap according to a second embodiment of the present invention.
In this embodiment, the plug portion P is assembled into the cap body 11, and a separate top cover 40 is attached to the cap body 11.

As shown in FIG. 4A, the cap body 11 has a top plate 24 connected to the upper end of the mounting tube 12, and a plug tube 25 hanging down from this top plate is fitted liquid-tightly into the bottle mouth 4.
The top plate 24 shown in the figure is formed so that a peripheral plate portion 24 a outside the plug barrel 25 is thicker than a central plate portion 24 b within the plug barrel 25 .
In this embodiment, the central plate portion 24b and the plug cylinder 25 form the plug portion P described above.
A pouring tube 27 stands upright from the peripheral plate portion 24a. The pouring tube 27 has a male screw 28 formed on its outer surface.
A ring-shaped second breaking portion B2 is formed in the center plate portion 24b at a fixed distance from the plug barrel 25, and its inside forms the extractor portion 26. A pull ring 29 is erected from this extractor portion.

In the illustrated example, as shown in FIG. 4A, the mounting cylinder 12 has a small inner diameter portion 12a which is the upper half, and a large outer diameter portion 12b which is the lower half, which hangs down via a downward step U.
The protrusion body 16 and the flap 20 are formed on the inner surface of the small inner diameter portion 12a.
In the illustrated example, a hinge 18 is formed at a corner between the lower end of the inner surface of the small inner diameter portion 12a and the downward step portion U. In the molded state, a flap 20 protrudes downward and inward from the hinge, as shown by imaginary lines in Fig. 4(A).
The protrusion main body 16 is disposed directly above the flap 20. The surface 17 of the protrusion main body 16 in this embodiment has a substantially triangular shape, but the shape can be changed as appropriate.

The upper cover 40 has an outer peripheral wall 44 extending vertically from the peripheral end of a top plate 42, and an inner peripheral wall 46 extending vertically from the inside thereof.
The outer peripheral wall 44 is fitted to the outer surface of the pouring tube 27. In the illustrated example, a female thread 45 corresponding to the male thread 28 is formed on the lower part of the outer peripheral wall 44.
The inner peripheral wall 46 is tightly fitted onto the inner surface of the pouring tube 27 .

In this embodiment, the locking means C is configured to fit the flap 20 in a bent state along the inner surface of the locking recess 6. This allows for a high locking force.

FIG. 5 shows a bottle with a cap according to a third embodiment of the present invention.
In this embodiment, the cap body 11 and the upper cover 40 of the second embodiment are integrally connected.
The cap body 11 has a surrounding tube 14 that is connected to the mounting tube 12 and surrounds the mounting tube 12 , and the upper end of the surrounding tube 14 is connected to the upper lid 40 via a hinge mechanism 48 .
The mounting tube 12 has a substantially constant thickness in the axial direction, and is molded in such a manner that a flap 20 protrudes downward and inward from a hinge 18 formed at the corner between the inner surface and the lower surface, as shown by an imaginary line in FIG. 5(A).
The protrusion main body 16 is formed directly above the flap 20 .
The surrounding cylinder 14 is connected to the mounting cylinder 12 via a connecting wall portion J that protrudes outward from the lower end of the mounting cylinder 12. The surrounding cylinder 14 extends further downward than the connecting wall portion J.
Between the connecting wall J and the surrounding tube 14, a third break portion B3 is formed over almost the entire circumference except for a portion (non-break portion) near the hinge mechanism 48. A vertical break line (not shown) is formed in the surrounding tube 14, continuing from the third break portion B3. When the top cover 40 is pulled outward in the open state, the vertical break line and the third break portion B3 break in sequence, and when the top cover 40 is pulled up, the stopper portion P is pulled out of the bottle mouth 4 via the non-break portion. In this way, the bottle cap 10 and the bottle body 2 can be separated and disposed of.
The top plate 24 has a vertical cylinder portion 24c extending vertically from the inner end of a peripheral plate portion 24a, and a central plate portion 24b connected to the lower end of the vertical cylinder portion 24c.
In this embodiment, as shown in FIG. 5A, the vertical cylinder portion 24c and the central plate portion 24b form the plug portion P described above.
The central plate portion 24b is formed with a pull-out portion P surrounded by a second breakable portion B2, as in the second embodiment, and a pull ring 29 stands upright from the pull-out portion.
The upper cover 40 has an outer peripheral wall 44 and an inner peripheral wall 46 suspended from a top plate 42, as in the second embodiment, and the inner peripheral wall 46 is tightly fitted into a pouring tube 27 standing from a peripheral plate portion 24a. The lower end of the outer peripheral wall 44 is connected to the surrounding tube 14 via the hinge mechanism 48.
In the illustrated example, an annular engaging projection s1 projects upward from the peripheral plate portion 24a.
The outer peripheral wall 44 has a lower inner surface provided with an engaged recess s2 that closely fits with the engaging projection s1.
The engaging projection s1 and the engaged recess s2 form a sealing means S.

2: Bottle body 4: Bottle mouth 5: Outer circumferential surface 6: Locking recess 7: Annular rib 10: Bottle cap 11: Cap body 12: Mounting tube 12a: Small inner diameter portion 12b: Large inner diameter portion 13: Inner circumferential surface 14: Surrounding tube 15: Convex locking portion 16: Convex body 17: (Convex body) surface 17a: Lower half of surface 17b: Upper half of surface 18: Hinge 20: Flap 20a: Tip 22: Top 23: Connecting tube portion 24: Top plate 24a: Peripheral plate portion 24b: Center plate portion 24c: Vertical tube portion (stopper tube portion)
25... Plug barrel 26... Unplug portion 27... Spouting barrel 28... Male thread 29... Pull ring 30... Plug body 30a... Upper half 30b... Lower half 32... Step portion 40... Upper cover 42... Top plate 44... Outer peripheral wall 45... Female thread 46... Inner peripheral wall 48... Hinge mechanism a... Protruding length (of convex body) B1... First breaking portion B2... Second breaking portion B3... Third breaking portion C... Locking means d... Depth (of locked recess) g... Gap i... Spacing J... Connecting wall portion n... Anti-pullout protrusion P... Plug portion r... Recess
S...Sealing means s1...Engaging protrusion s2...Engaged recess t...Thickness (of the flap) U...Downward step

Claims (2)

A bottle body (2) having a bottle mouth (4) and a locking recess (6) formed on the outer peripheral surface (5) of the bottle mouth (4);
a cap (10) having a plug portion (P) for closing the bottle mouth portion, and an attachment tube (12) attached to the outer circumferential surface of the bottle mouth portion and connected to the plug portion (P) so as to maintain the bottle mouth portion closed by the plug portion (P);
The cap (10) is provided with a protruding locking portion (15) that can be fitted into the locking recess (6) to prevent the attachment tube (12) from slipping out of the bottle mouth portion.
The convex engaging portion (15) is
a protrusion body (16) for insertion into the engagement recess (6), the protrusion body (16) being bulged inward from the inner circumferential surface (13) of the mounting tube (12);
a flexible flap (20) integrally connected to the mounting tube (12) below the protruding portion main body (16);
The flap (20) is fitted into the engagement recess (6), and the protruding length (a) of the convex body (16) is set to be smaller than the depth (d) of the engagement recess (6),
The flap (20) is formed so as to be bent along the inner surface of the engaging recess (6) by an upward pushing operation, thereby covering the protrusion main body (16);
A bottle with a cap, characterized in that the flap (20) has a length that reaches the upper half (17b) of the surface (17) of the convex main body (16) by the pushing operation, and is arranged so that when the convex engaging portion (15) is fitted into the engaging recess (6), the tip side of the flap (20) is clamped between the engaging recess (6) and the upper half (17b) of the surface (17) of the convex main body (16). 2. A bottle with a cap as described in claim 1, characterized in that the flap (20) is rotatably protruding inward from the inner circumferential surface (13) of the mounting tube (12) via a hinge (18), and when the stopper portion (P) is inserted into the bottle mouth, the flap is pushed up by the bottle mouth and rotates upward to cover the convex portion main body (16).

Images