JP2019210054A - Cap with sealing portion - Google Patents

Abstract

To provide a cap with a sealing portion capable of suppressing an inner cap for a bottle from being off a bottle mouth portion due to an increase in an internal pressure.SOLUTION: The cap with a sealing portion includes an inner cap 10 for sealing a bottle mouth portion 41, a cylindrical sealing portion 20 for fixing the inner cap 10 in a state where it covers the bottle mouth portion 41, and an engagement member 30 for engaging between the sealing portion 20 and the bottle mouth portion 41. The engaging member 30 having a substantially C-shape in a plan view with a missing portion 34 so as to be elastically deformable is disposed in the sealing portion 20, and is configured to be engageable with an engaging portion 42 formed on an outer peripheral surface of the bottle mouth portion 41.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a cap with a sealing portion that seals a bottle mouth portion of a bottle.

As a prior art related to a cap with a sealing part, the following Patent Document 1 describes a bottle stopper provided with an inner stopper attached to a bottle mouth part and a side part covering the bottle mouth part.
The bottle stopper described in Patent Document 1 includes a cut portion 21 provided on the side portion 20 upward from the lower end portion, a circumferential portion 23a that circulates along the outer periphery of the side portion 20, and the circumferential portion 23a. Thin wall portions 23 in which inclined portions 23b formed upward are alternately formed continuously, and separation thin wall portions 15 that circulate along the outer periphery of the side portion 20 at the boundary between the head portion 12 and the side portion 20; The engagement portion 24 is provided on the inner surface of the side portion 20 so as to be engaged with the annular engagement portion A2 of the bottle A, and the gap portion is provided in the engagement portion 24 corresponding to the position where the thin portion 23 is provided. 25, and the outer shape of the edge portion 14 of the head 12 is formed to be larger than the outer shape of the bottle mouth portion A1.
And the engaging part 24 which protrudes to an internal-diameter direction is integrally projectingly provided by the inner surface above the side part 20, and when the inner stopper 10 is mounted to the bottle mouth part A2 after filling the contents into the bottle A, Since the engaging portion 24 engages with the annular engaging portion A2 provided on the outer peripheral surface of the bottle mouth portion A2, the bottle A is closed.

JP 2017-197196 A

In the step of filling the contents into the bottle, depending on the type of the contents, the contents in a low temperature (for example, 5 ° C.) state are filled into the bottle, and then the bottle is closed. There is a case in which a process of sterilizing and washing is involved throughout.
In such a process, the internal pressure in the bottle increases as the temperature rises rapidly. For this reason, in the prior art, the bottle stopper is pushed outward by the increased internal pressure, and the engaging portion 24 projecting from the inner side surface of the side portion 20 and the annular engaging portion A2 on the bottle mouth portion A2 side are provided. And the bottle stopper may be disconnected from the bottle mouth portion A2 and unplugged.

  This invention makes it a subject to create the cap with a sealing part which can suppress that the inner stopper for bottles remove | deviates from the bottle opening part by the raise internal pressure in order to eliminate the trouble in the above-mentioned prior art. .

Among the means for solving the above problems, the main means of the present invention is as follows.
An inner stopper that seals the bottle opening, a cylindrical sealing part that is fixed in a state where the inner stopper is covered on the bottle opening, and an engagement member that engages between the sealing part and the bottle opening. A cap with a sealing portion configured to have a substantially C-shape in plan view and having a defect portion and elastically deformable, and disposed in the sealing portion, and an outer periphery of the bottle mouth portion It is characterized by being provided so as to be engageable with an engaging portion formed on the surface.
According to the main means of the present invention, the engagement member disposed between the sealing portion and the bottle mouth portion is firmly engaged with the engagement portion formed on the outer peripheral surface of the bottle mouth portion, so that the internal pressure is increased. Unplugging of the inner plug accompanying the rise can be suppressed.

Further, according to another configuration of the present invention, the main means includes a top portion where the sealing portion presses the inner stopper, a side wall portion covering the bottle mouth portion, a connecting portion connecting the top portion and the side wall portion, and a connecting portion. And a second weakening portion that is formed at a position excluding the top portion and that connects the top portion and the side wall portion so as to be breakable, and a second weakening portion that is disposed between the lower end portion of the side wall portion and the first weakening portion. The weakening portion and the assembly hole formed on the side wall portion and excluding the connecting portion to enable the assembly of the engaging member are integrally formed. Is.
Alternatively, in the main configuration, the sealing portion is suspended from the edge portion of the lid portion provided at the upper portion of the inner stopper and covers the bottle mouth portion, and between the outer peripheral wall and the sidewall portion of the lid portion. Formed at a position on the side wall portion and excluding the connecting portion, a first weakened portion that is connected so as to be breakable, a second weakened portion that is disposed between the lower end portion of the side wall portion and the first weakened portion so as to be breakable And an assembly hole that enables assembly of the engaging member, and is integrally formed.
In the above means, the engaging member that is interposed between the side wall portion on the sealing portion side and the bottle mouth portion and engages with the engaging portion formed on the outer peripheral surface of the bottle mouth portion is the first member. It becomes possible to remove together with the sealing portion by breaking the weakened portion and the second weakened portion.

According to another configuration of the present invention, any one of the above means is added with a means that an opening is formed in the vicinity of the connecting portion and between both ends in the circumferential direction of the assembly hole. is there.
In the above means, when the mold is forcibly removed at the time of molding, the side wall portion bulges and deforms in the outer diameter direction, and unnecessary breakage occurs in the first and second weakened portions formed in a thin shape. It is possible to efficiently discharge the internal air through the opening at the time of plugging.

In another configuration of the present invention, a means that the first weakened portion and the second weakened portion are connected via an opening to the above-described means.
With the above means, a smooth break can be achieved.

According to another configuration of the present invention, in any one of the above means, the engaging member has a locking claw at one end and an elastic engaging portion that can be elastically deformed at the other end. It is formed in a shape, with the means that the locking claw engages with the assembly hole inseparably, and the elastic engaging part represses the engaging part formed in the bottle mouth part. is there.
In the above means, the engaging member interposed in a state of being sandwiched between the side wall portion on the sealing portion side and the bottle mouth portion represses the engaging portion formed on the outer peripheral surface of the bottle mouth portion. Engagement is achieved.

According to another configuration of the present invention, in any one of the above means, an inclined portion as a restricting means for preventing the engaging member from being deformed in a direction of expanding the diameter is provided on either the side wall portion or the engaging member. It is what added the means that it is provided.
With the above means, the deformation of the engaging portion itself can be prevented, so that the inner plug can be more reliably prevented from being unplugged due to an increase in internal pressure.

Since the present invention has the above-described configuration, the following effects can be obtained.
Even if the internal pressure rises due to a sudden rise in temperature inside the bottle, the inner plug is pushed out, thereby disengaging the engagement member and the engagement portion on the bottle mouth side. This can be suppressed.
In particular, since the restricting means prevents deformation of the engaging portion itself, it is possible to reliably prevent the inner stopper from being unplugged from the bottle opening.

It is a perspective view of the cap with a sealing part which shows 1st Example of this invention. It is a disassembled perspective view of the cap with a sealing part of 1st Example. It is a fragmentary sectional view which shows the state which mounted | wore the bottle mouth part with the cap with a sealing part of 1st Example. It is a front view of the cap with a sealing part which shows 2nd Example of this invention. It is a fragmentary sectional view which shows the state which mounted | wore the bottle opening part with the cap with a sealing part of 2nd Example. It is sectional drawing of the cap with a sealing part which shows the initial state before a regulation means functions as an example of a regulation means. It is a fragmentary sectional view of the cap with a sealing part which shows the operation state in the function of a control means. The modification of a control means is shown, A is a fragmentary sectional view of the cap with a sealing part which shows the initial state before a regulation means functions, B is a fragmentary sectional view of the cap with a seal part which shows the operation state in the function of a regulation means It is.

Embodiments of the present invention will be described below with reference to the drawings.
The cap with a sealing portion of the present invention is made of glass such as a one-necked bottle (1800 ml bottle) or No. 4 bottle (720 ml bottle) containing, for example, sake such as sake or shochu and other liquids (for example, soy sauce and vinegar). It is attached to the bottle mouth of the bottle to seal and seal the inside of the bottle.

  1 is a perspective view of a cap with a sealing portion showing a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the cap with a sealing portion of the first embodiment, and FIG. 3 is a cap with a sealing portion of the first embodiment. It is a fragmentary sectional view which shows the state with which the bottle opening part was mounted | worn.

  As shown in FIGS. The cap A with a sealing part shown in the first embodiment covers the inner stopper 10 for sealing the bottle opening 41 on the side of the bottle body 40 together with the inner stopper 10 and the bottle opening 41 in the sealed state. These include a cylindrical sealing part 20 for fixing, and an engagement member 30 for interposing between the sealing part 20 and the bottle mouth part 41 to suppress the plugging of the inner plug 10, and Are formed separately for each member by injection molding a predetermined synthetic resin material, for example.

The inner stopper 10 is formed in a cylindrical or cylindrical shape having a dimension slightly larger than the inner diameter of the bottle mouth portion 41 on the lower surface of the short cylindrical lid portion 11 having substantially the same size as the outer diameter of the bottle mouth portion 41. The plug portion 13 is integrally formed in a convex shape downward. The bottle body 40 is set in a sealed state by the stopper portion 13 of the inner stopper 10 being inserted into the bottle mouth portion 41 and the outer peripheral surface of the stopper portion 13 being in close contact with the inner peripheral surface of the bottle mouth portion 41.
In addition, a plurality of convex ribs 13 a that come into contact with the upper end of the bottle mouth part 41 when the cap A with a sealing part is attached to the bottle mouth part 41 are intermittently provided on the outer peripheral surface on the upper side of the stopper part 13. Projected. Thus, in cap A with a sealing part of this invention, compared with the case where it arrange | positions cyclically by arrange | positioning the some convex rib 13a, compared with the case where it arrange | positions cyclically | annularly, it reduces manufacturing cost (material cost). It is possible.

  The sealing part 20 is integrally formed with a top part 21 for pressing the lid part 11 of the inner stopper 10 and a cylindrical side wall part 22 covering the outer peripheral wall 12 of the lid part 11 and the upper side surface of the bottle mouth part 41. ing. Between the side surface of the top part 21 and the side wall part 22, a connection part 23 provided inseparable from each other, and is formed in a substantially C-shape in a thin shape and in a plan view at a circumferential position excluding the connection part 23. It connects via the 1st weakening part 24 provided so that it was possible. The first weakened portion 24 has a substantially V-shaped cross section and is formed horizontally with respect to the cap axis O.

An opening 25 made of a through hole extending in a plan view is formed at one end of the first weakened portion 24, and a notch is formed at the lower end portion 20 </ b> A of the sealing portion 20 and not overlapping with the opening 25 in the circumferential direction. A portion 26 is formed. The lower end of the opening 25 and the upper end of the notch 26 are connected by a second weakening portion 27 for opening that is formed in a thin and slanted manner so as to be ruptured. The part 27 and the first weakening part 24 are connected via an opening 25.
Further, the side wall portion 22 of the sealing portion 20 is formed with an assembly hole 28 that penetrates the side wall portion 22 in the radial direction and opens horizontally with respect to the cap axis O and in a substantially C shape in plan view. As shown in FIG. 3, the assembly hole 28 is formed at a position between the upper end 27 b (the lower end of the opening 25) of the first weakened portion 24 and the second weakened portion 27 in the height direction. Is formed at a position excluding the opening 25. On the lower surface of the assembly hole 28, a locked portion 28a that protrudes in a convex shape protrudes along the circumferential direction.
In the present embodiment, a top wall opening 21a is formed through the center of the top 21, and the upper surface of the lid 11 of the inner plug 10 can be exposed through the top wall opening 21a. Furthermore, a knurled 21 b that functions as a slip stopper is formed on the side surface of the top portion 21. The top wall opening 21a and the knurl 21b are not indispensable for configuring the sealing part 20, and can be appropriately and selectively incorporated.

As shown in FIG. 2, the engaging member 30 is formed in a substantially C shape in a plan view by a synthetic resin or metal that can be elastically deformed. When the engaging member 30 is made of synthetic resin, for example, the sealing portion 20 is formed of LLDPE (linear low density polyethylene), and the engaging member 30 is harder than LLDPE and has excellent elasticity (PP). The embodiment formed by is preferable.
As shown in FIG. 2 or FIG. 3, the engaging member 30 is provided with a locking claw 31 that bends in the outer diameter direction on the upper end side, and has an elastic engaging portion 32 that is folded back in the inner diameter direction on the lower end side. Thus, it is formed in a substantially C shape in plan view and a substantially S shape in cross section. The locking claw 31 and the elastic engagement portion 32 are integrally connected via a plurality of column portions 33 that are intermittently arranged in the circumferential direction. The engaging member 30 can be elastically deformed in the radial direction when a defect portion 34 formed by a gap between both end portions 30a and 30b in the circumferential direction expands or narrows in the circumferential direction.

  The inner diameter of the engagement member 30, that is, the inner diameter of the elastic engagement portion 32 on the lower end side is formed to be slightly larger than the outer diameter of the lid portion 11 of the inner plug 10, and the inner plug 10 is along the cap axis O. Thus, it is possible to pass through the inside of the engaging member 30 in the vertical direction. Further, the outer diameter of the engaging member 30, that is, the outer diameter of the locking claw 31 on the upper end side is formed with a size larger than the inner diameter of the side wall portion 22 of the sealing portion 20. The engagement member 30 is inserted into the sealing portion 20 in a state of being reduced in diameter in the inner diameter direction, the locking claw 31 is aligned with the assembly hole 28 in the height direction, and both end portions in the circumferential direction. When the alignment member 23 is positioned so that the connecting portion 23 on the side wall portion 22 side is positioned in the missing portion 34 between 30a and 30b, the engaging member 30 bulges and deforms in the outer diameter direction, and the locking claw 31 is assembled. The engagement member 30 can be assembled to the assembly hole 28 in an inseparable manner by engaging with the locked portion 28 a of the attachment hole 28. In this state, the elastic engagement portion 32 on the lower end side of the engagement member 30 is set to protrude larger in the inner diameter direction than the inner peripheral surface of the side wall portion 22.

Next, the usage example of the cap with a sealing part which shows 1st Example is demonstrated.
First, the inner plug 10 with the plug portion 13 facing downward is inserted into the sealing portion 20 from the lower end portion 20A side, and then the engaging member 30 is inserted into the sealing portion 20 by the above method. Assembling of the cap A with the sealing portion is completed by assembling the joining member 30 into the assembling hole 28.
Alternatively, the assembly of the cap A with the sealing portion is completed by first assembling the engaging member 30 into the assembly hole 28 of the sealing portion 20 and then inserting the inner plug 10 into the sealing portion 20 from the lower end portion 20A side. It is also possible to make it.
An annular convex portion 29 protruding in the inner diameter direction is formed on the inner peripheral surface of the side wall portion 22 of the sealing portion 20 and at an upper position of the assembly hole 28, and the annular convex portion 29 is formed on the lid portion 11. Since the lower end is supported, it is possible to prevent the inner plug 10 from being unplugged from the sealing portion 20.

In any case, after the assembly is completed, the cap A with the sealing portion covers the lower end portion 20A of the sealing portion 20 on the upper end of the bottle mouth portion 41 on the side of the bottle body 40 in the state filled with the contents. The stopper 41 is attached to the bottle mouth portion 41 by plugging with a stopper (not shown).
At this time, as shown in FIG. 3, the sealing of the bottle body 40 is completed by inserting the stopper portion 13 of the inner stopper 10 into the bottle mouth portion 41 and setting the sealing state.
At the same time, the elastic engagement portion 32 of the engagement member 30 is sandwiched between the outer peripheral surface of the bottle mouth portion 41 and the inner peripheral surface of the side wall portion 22, and relatively the bottle mouth portion 41 while being compressed and deformed in the radial direction. And is fitted into an engaging portion 42 formed in a concave and annular shape on the outer peripheral surface of the bottle mouth portion 41. The elastic engagement portion 32 is engaged with the engagement portion 42 by bulging and deforming in the inner diameter direction in the engagement portion 42. The elastic engagement portion 32 has elasticity, and the elastic engagement portion 32 is always hooked in a state in which the engagement portion 42 is elastically pressed in the inner diameter direction, and therefore, between the elastic engagement portion 32 and the engagement portion 42. It is possible to firmly maintain the engagement. Note that the shape of the engaging portion 42 formed on the outer peripheral surface of the bottle mouth portion 41 is not particularly limited to the concave shape as long as the elastic engaging portion 32 can be engaged.

For this reason, as described above, after filling and sealing the contents in a low temperature state, a process of sterilizing and washing with hot water (for example, 60 ° C.) over the entire bottle body 40 is performed. Even if the internal pressure increases as the temperature rises, it is possible to suppress that the inner plug 10 is pushed out and the engagement between the elastic engagement portion 32 and the engagement portion 42 is thereby released. As a result, it is possible to prevent the inner stopper 10 from being unplugged from the bottle mouth portion 41.
In addition, since the sealing part 20 must be removed when the cap A with the sealing part plugged into the bottle body 40 is opened, the sealing part 20 has a function of preventing the bottle body 40 from being illegally opened. Have.

In order to open the cap A with the sealing portion, for example, a toe or the like is inserted into the cutout portion 26 to pick up the end portion 20b that slightly raises the side wall portion 22, and the end portion 20b is pulled up obliquely upward toward the opening portion 25. . Then, the 2nd weakening part 27 fractures | ruptures toward the opening part 25 from the notch part 26, and can separate the side wall part 22 in the circumferential direction.
Subsequently, the hand holding the end 20b is rotated around the cap axis O. Then, the first weakened portion 24 following the upper end of the opening 25 is broken, and the top portion 21 and the side wall portion 22 can be separated at a position excluding the connecting portion 23.

  By these operations, the side wall portion 22 constituting the sealing portion 20 that covers the inner stopper 10 can be greatly expanded in a diameter-expanded manner, so that the sealing portion 20 to which the engaging member 30 is assembled is used as the bottle mouth portion. It is possible to easily remove the bottle mouth portion 41 and the inner stopper 10 that seals the bottle mouth portion 41 from the 41. Therefore, by removing the inner stopper 10 after removal, the content liquid in the bottle body 40 can be poured out, and by inserting the inner stopper 10 into the bottle opening 41, the bottle opening 41 is closed again. can do.

FIG. 4 is a front view of a cap with a sealing portion showing a second embodiment of the present invention, and FIG. 5 is a partial sectional view showing a state in which the cap with a sealing portion of the second embodiment is attached to a bottle mouth portion.
The second embodiment is different from the first embodiment in that the cap with the sealing portion is different from the first embodiment in that the inner plug 10 and the sealing portion 20 are separate members in the first embodiment. In the example, the inner plug 10 and the sealing portion 20 are integrally formed, and other configurations and effects are the same as in the first embodiment. Therefore, the following description will mainly focus on differences from the first embodiment.

  The cap B with a sealing portion shown in the second embodiment is mainly composed of an inner stopper 10 provided with a stopper portion 13 which is inserted into the bottle mouth portion 41 and hermetically sealed, and a lid portion 11 provided on the upper portion of the inner stopper 10. The cylindrical sealing portion 20 is provided integrally with the lower end of the outer peripheral wall 12 that is suspended from the edge of the lid portion 11. An anti-slip knurl 12a is engraved on the outer peripheral surface of the outer peripheral wall 12 over the entire circumference. Further, a first weakened portion 24 formed in a substantially V-shaped thin section is provided between the lower end of the outer peripheral wall 12 and the upper end of the side wall portion 22 of the sealing portion 20, and a second weakened portion described later is provided. By causing the first weakened portion 24 to break through the opening 27 and the opening 25, it is possible to separate the lid portion 11 and the sealing portion 20 from each other.

An opening 25, a notch 26, and a second weakened portion 27 are formed in the sealing portion 20.
The opening 25 is formed as a vertically long through hole that is formed by penetrating the side wall portion 22 of the sealing portion 20 in the plate thickness direction, and the cutout portion 26 is formed by cutting out a part of the lower end portion 20A of the sealing portion 20. Has been.
The second weakening portion 27 shown in the present embodiment is such that the lower end 27a is connected to the upper end of the cutout portion 26, and the upper end 27b is connected to the lower end of the opening 25, and the sealing portion is directed from the lower end 27a toward the upper end 27b. The thin-walled portion formed in a substantially V-shaped cross section with respect to the 20 side wall portions 22 is configured to circulate around the spiral 3 over one or more rounds. In addition, the 2nd weakening part 27 is good also as a structure which connects the upper end 27b to the opening part 25, before making a round.
The opening 25 is disposed perpendicularly to the first weakening portion 24 at a position between the upper end 27 b of the second weakening portion 27 and the first weakening portion 24, and the second weakening portion 27 and the first weakening portion 24. Are linked. Then, when the side wall portion 22 of the sealing portion 20 is cut along the second weakening portion 27 and the side wall portion 22 is planarly developed from the notch portion 26 to the opening portion 25, a portion formed in a substantially trapezoidal shape is an open piece portion. 20a.

  Further, on the side wall portion 22 of the sealing portion 20, the side wall portion 22 is provided at a height position between the first weakened portion 24 and the upper end 27 b of the second weakened portion 27 and in a circumferential position excluding the opening 25. An assembly hole 28 that penetrates in the radial direction and opens in a substantially C shape in plan view in a horizontal direction with respect to the cap axis O is formed. And as shown in FIG. 5, the to-be-latched part 28a which protrudes in the convex shape is protrudingly provided in the lower surface of the assembly | attachment hole 28 along the circumferential direction. In the assembly hole 28, an engagement member 30 similar to that in the first embodiment is assembled.

The cap with the sealing part in which the engaging member 30 is assembled in the assembly hole 28 of the sealing part 20 is plugged into the bottle mouth part 41 of the bottle body 40 filled with the contents, and the inner stopper 10 is the bottle mouth part. The bottle body 40 is sealed by being inserted into 41 and set in a sealed state.
At this time, similarly to the above, the elastic engagement portion 32 of the engagement member 30 is firmly engaged in the engagement portion 42 on the bottle mouth portion 41 side. Therefore, even in the cap B with the sealing portion shown in the second embodiment, even if the pressure is increased in accordance with the rapid temperature rise in the bottle 40 during the sterilizing and washing process similar to the above, the inner plug 10 is externally attached. It is possible to suppress the engagement between the elastic engagement portion 32 and the engagement portion 42 from being released. Furthermore, it is possible to prevent the inner stopper 10 from being unplugged from the bottle mouth portion 41.

  In order to open the cap B with the sealing portion of the second embodiment, for example, a toe or the like is inserted into the notch portion 26 to raise the opening portion 20a a little, and the end portion 20b is picked. It is made to circulate so that it may pull up along the 2nd weakening part 27 toward 25. FIG. Then, the second weakened portion 27 breaks from the cutout portion 26 toward the opening 25, that is, from the lower end 27 a to the upper end 27 b of the second weakened portion 27, and further the first weakened portion following the upper end of the opening 25. The portion 24 can be broken.

  By breaking the first weakening portion 24, it is possible to separate and remove the side wall portion 22 constituting the open piece portion 20 a from the lower end of the outer peripheral wall 12 of the lid portion 11. Therefore, as in the first embodiment, the lid 11 is unplugged while grasping the outer peripheral wall 12 after removal, and the inner plug 10 that seals the bottle opening 41 is pulled out, so that the content liquid in the bottle body 40 is removed. It is possible to dispense. Further, by inserting the inner stopper 10 into the bottle opening 41, the bottle opening 41 can be closed again.

FIG. 6 is a cross-sectional view of the cap with a sealing portion showing an initial state before the regulating means functions as an example of the regulating means, and FIG. 7 is a partial cross-sectional view of the cap with a sealing portion showing an operating state during the function of the regulating means. is there.
A cap C with a sealing portion shown in FIG. 6 is a modification of the first embodiment. The difference from the first embodiment is that the restricting means P for preventing the engaging member 30 from being deformed in the direction of expanding the diameter is provided. It is in the point to prepare.
As shown in FIG. 6, the regulating means P is configured such that the inner diameter of the inner peripheral surface of the side wall 22 gradually decreases toward the lower position of the inner peripheral surface of the side wall 22 and the locked portion 28 a. It is comprised by providing the inclined part 22a to carry out. And the inclined part 22a which comprises the control means P is set to the state which contacts the outer surface of the some pillar part 33 formed in the engaging member 30, respectively.
In addition, the inclined part 22a which comprises the control means P may be intermittently formed in the circumferential direction according to the position of the pillar part 33. FIG.

  As described above, when the internal pressure increases in accordance with the rapid temperature rise in the bottle body 40 during the sterilizing and washing process, the inner plug 10 is pushed outward (upward in the figure). Since the lid portion 11 of the stopper 10 lifts the top portion 21, the sealing portion 20 is pushed upward. Then, as shown in FIG. 7, the inclined portion 22 a formed on the inner peripheral surface of the side wall portion 22 moves upward, and the column portion 33 of the engaging member 30 is moved by a force according to the upward movement amount. Press toward the radially inner side approaching the cap shaft O. At this time, since the elastic engagement portion 32 elastically presses the engagement portion 42 radially inward with a stronger force, the engagement state between the elastic engagement portion 32 and the engagement portion 42 is the first embodiment. It can be stronger than the example. Therefore, it is possible to reliably prevent the inner plug 10 from being unplugged from the bottle mouth portion 41.

FIG. 8 shows a modification of the restricting means, A is a partial cross-sectional view of the cap with a sealing portion showing an initial state before the restricting means functions, and B is an operation state of the cap with a sealing portion showing the operation state during the function of the restricting means. It is a fragmentary sectional view.
The modification of the regulating means P shown in FIG. 8 is different from the regulating means P shown in FIGS. 6 and 7 in that the regulating means P is formed on the engaging member 30 side.
That is, as shown in FIG. 8A, in this modification, the restricting means P gradually increases the diameter of the column portion 33 toward the upper outer surface of the column portion 33 constituting the engaging member 30 as it goes upward. In the initial state before the regulating means P functions, a part of the inclined portion 35 is set to enter the assembly hole 28 from the inside of the side wall portion 22.

  As shown in FIG. 8B as an operation state during the function of the restricting means P, when the internal pressure in the bottle body 40 increases and the inner plug 10 lifts the top portion 21, it is provided on the inner peripheral surface of the side wall portion 22. The tip portion of the locked portion 28a slides on the inclined portion 35 while moving upward, and presses the engagement member 30 toward the radially inner side with a force corresponding to the upward movement amount of the sealing portion 20. At this time, since the column portion 33 is tilted radially inward, the elastic engagement portion 32 represses the engagement portion 42 radially inward with a stronger force than in the first embodiment. Therefore, also in this configuration, it is possible to reliably prevent the inner stopper 10 from being unplugged from the bottle mouth portion 41 as described above.

  As mentioned above, although the structure of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.

  For example, in each of the above-described embodiments, the configuration in which the upper end 27b of the second weakening portion 27 and the first weakening portion 24 are indirectly connected via the opening portion 25 formed of a through hole has been described. The portion 25 may be configured to be a thin portion, or may be configured such that the first weakened portion 24 is directly connected to the second weakened portion 27 without the opening 25 being interposed.

  Further, for example, in each of the above-described embodiments, the case where a glass bottle is used as the bottle body 40 has been described. However, the bottle body 40 may be formed of other materials such as metal, synthetic resin, or ceramic.

  In each of the above embodiments, the first weakened portion 24 and the second weakened portion 27 are described on the outer peripheral surface side of the side wall portion 22, but the cross section is substantially V-groove (thin groove shape). The configuration formed on the inner peripheral surface of the sealing part 20 may be sufficient as long as the configuration is formed as described above.

  Moreover, although the said Example showed and demonstrated the case where the inclination part 22a which comprises the regulation means P was provided in the side wall part 22, or the inclination part 35 was provided in the engaging member 30, an inclination part engages with the side wall part 22. It may be provided on at least one of the members 30, and may be provided on both the side wall portion 22 and the engaging member 30.

  Moreover, although the said Example showed and demonstrated the case where it applied to the cap with a sealing part of 1st Example, the control means P can also be applied to the cap with a sealing part of 2nd Example.

  The cap with a sealing portion of the present invention can be used in a wider area in the field of caps for sealing bottles that may have a sudden increase in internal pressure.

10: Inner plug 11: Lid portion 12: Outer wall 13: Plug portion 13a: Convex rib 20: Sealing portion 20A: Lower end portion 20a of the sealing portion: Opening portion 20b: End portion 21 of the sealing portion: Top portion 21a: Top wall Opening 21b: Knurl 22: Side wall 22a: Inclined part 23: Connection part 24: First weakening part 25: Opening part 26: Notch part 27: Second weakening part 27a: Lower end 27b of second weakening part: Second weakening Upper end 28 of part: Assembly hole 28a: Locked part 29: Annular convex part 30: Engaging member 30a, 30b: End part 31 of engaging member: Locking claw 32: Elastic engaging part 33: Column part 34 : Deletion part 35: Inclined part 40: Bottle body 41: Bottle mouth part 42: Engagement part A, B, C: Cap P with sealing part: Control means

Claims (7)

An inner stopper (10) for sealing the bottle opening (41), a cylindrical sealing part (20) for fixing the inner stopper (10) in a state of covering the bottle opening (41), and the sealing An engagement member (30) that engages between the portion (20) and the bottle mouth portion (41), and a cap with a sealing portion,
The engaging member (30) has a substantially C-shape in plan view and is provided with a defect portion (34) and can be elastically deformed. The engaging member (30) is disposed in the sealing portion (20), and the outer periphery of the bottle mouth portion (41). A cap with a sealing portion, which is provided so as to be engageable with an engaging portion (42) formed on a surface.   Between the top part (21) which a sealing part (20) presses down an inside stopper (10), the side wall part (22) which covers a bottle mouth part (41), and the said top part (21) and the said side wall part (22) And a first weakening portion (24) that is formed at a position excluding the connection portion (23) and that connects the top portion (21) and the side wall portion (22) in a breakable manner. ), A second weakened portion (27) disposed in a breakable state between the lower end portion (20A) of the side wall portion (22) and the first weakened portion (24), and the side wall portion (22). And an assembly hole (28) formed at a position excluding the connecting portion (23) to allow the engagement member (30) to be assembled. The cap with a sealing part according to 1.   The sealing part (20) is suspended from the edge of the lid part (11) provided on the upper part of the inner stopper (10) and covers the bottle mouth part (41), and the lid part (11). ) Of the outer peripheral wall (12) and the side wall portion (22) so as to be connectable in a breakable manner, the lower end portion (20A) of the side wall portion (22), and the first weakened portion. The second weakened portion (27) disposed between the second weakened portion (24) and the engaging member (30) on the side wall portion (22) and excluding the connecting portion (23). The cap with a sealing portion according to claim 1, wherein the cap is formed integrally with an assembly hole (28) that enables assembly of the assembly.   The cap with a sealing portion according to claim 2 or 3, wherein an opening (25) is formed in the vicinity of the connecting portion (23) and between both ends in the circumferential direction of the assembly hole (28).   The cap with a sealing portion according to claim 4, wherein the first weakened portion (24) and the second weakened portion (27) are connected via an opening (25).   The engaging member (30) has a locking claw (31) at one end and an elastic engaging portion (32) that can be elastically deformed at the other end, and is formed in a substantially S shape in cross section. The pawl (31) engages with the assembly hole (28) in an inseparable manner, and the elastic engagement portion (32) represses the engagement portion (42) formed in the bottle mouth portion (41). The cap with a sealing part according to any one of claims 2 to 5. Inclined portions (22a, 35) as restricting means (P) for preventing the engaging member (30) from being deformed in the direction of expanding the diameter on either the side wall portion (22) or the engaging member (30). The cap with a sealing part as described in any one of Claims 1 thru | or 6 with which is provided.

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