JPH0740521U - Capping structure for carbonated beverage bottles - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a stopper structure for a bottle for carbonated soft drinks in which stoppers are scattered when the stopper is opened. [Structure] A cylindrical fitting portion 3 that can be tightly fitted inside the bottle mouth 2, and a multi-thread female screw 10 fitted on the outside of the bottle mouth 2 and fitted inside.
The plug body 1 is composed of an inner plug 6 made of a soft synthetic resin integrally formed with a skirt portion 4 provided with and a cylindrical outer cylinder 7 made of a hard synthetic resin fixed to the outside of the skirt portion 4. ,
A multi-thread male screw 15 is provided on the outer surface of the bottle mouth 2, and the inner plug 6
With the bottle mouth 2 positioned between the fitting portion 3 and the skirt portion 4, the inner plug 6 is pressed against the bottle mouth 2 to be capped. After overcoming, the upper end of the multiple thread female screw 10 and the lower end of the multiple thread male screw 15 are locked to form a closed structure. Further, the inner plug 6 is capped with a cylindrical outer cylinder 7. Since the plug can be opened by loosening the screw engagement between the multi-thread male screw 10 and the multi-thread female screw 15, the plug body 1 does not unexpectedly pop out due to the gas pressure at the time of opening, which is extremely safe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cap structure for a bottle of carbonated drink such as sparkling wine, and more particularly to a cap made of synthetic resin that fits inside the bottle mouth of a glass bottle.

[0002]

[Prior art]

 As shown in FIG. 5, in the conventional plugging structure of this kind, a cylindrical synthetic resin inner plug 52 having a flange 51 that contacts the edge of the bottle mouth 50 is tightly fitted inside the bottle mouth 50 as shown in FIG. The metal cap 53 is put on the upper part of the cap 53, and the skirt 55 of the cap 53 corresponding to the lower side of the band-shaped jaw 54 formed on the outside of the bottle mouth 50 is caulked and fixed. What is done is common. When the stopper is opened, a breaking guide (not shown) provided on the side of the stopper is pulled to remove the cap 53, and then the inner stopper 52 is pulled out by pinching the peripheral edge of the flange 51.

[0003]

[Problems to be solved by the device]

 Generally, in the production of glass bottles, it is difficult to control the molding inside the bottle mouth and the inner diameter tends to vary. Therefore, when the bottle closed according to the above-mentioned conventional example has the inner plug 52 tightly fitted to the bottle mouth 50 when opening the bottle, it is extremely difficult to pull out, and conversely, the inner bottle 52 is loosened in the bottle mouth 50. In the case where the cap 53 is fitted, the inside plug 52 may suddenly come off due to the pressure of carbonic acid in the bottle while the cap 53 is being broken. When the cap is opened abruptly in this manner, the contents of the bottle overflow and the broken cap 53 is made of a thin metal, so that there is a risk of damaging a hand or the like. In addition, when the inner plug 52 is made of a soft synthetic resin, there is a problem that it becomes difficult to pull out because the bottle 50 comes into close contact with the bottle mouth 50 due to a change with time. There is a screw type to solve the problem that the inner plug 52 is tightly fitted into the bottle mouth 50 and is difficult to pull out. However, this screw-type configuration has a disadvantage in that a special capping machine is required for capping. Further, locking projections are provided on the outer surface of the bottle mouth at a predetermined interval, and an engaging portion that engages with the locking projections is provided on the skirt portion of the plug body. A configuration is also known in which, afterwards, each engaging portion and each locking projection are engaged to close the plug, and when opening, the engaging state between each engaging portion and each locking projection is released to pull out the plug body. Has been. However, even in this conventional example, it is impossible to cope with the variation in the inner diameter of the bottle mouth because it is a pull-out type.

It is an object of the present invention to solve the above problems, and an object thereof is to provide a capping structure for a carbonated beverage bottle that solves the problems.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is provided with, for example, a cylindrical fitting portion 3 that can be tightly fitted inside the bottle mouth 2 and a multiple thread female screw 10 that is fitted on the outer side of the bottle mouth 2. The plug body 1 is composed of an inner plug 6 made of a soft synthetic resin integrally formed with the skirt portion 4 and a cylindrical outer cylinder 7 made of a hard synthetic resin which is fixed to the outside of the skirt portion 4. A multi-threaded male screw 15 is provided on the outer surface of the bottle mouth 2, and the bottle mouth 2 is located between the fitting portion 3 and the skirt portion 4 of the bottle stopper 6, and the bottle stopper 6 is attached to the bottle mouth 2. By pressing and plugging, the multi-thread female screw 10 is passed over the multi-thread male screw 15, and the upper end of the multi-thread female screw 10 and the lower end of the multi-thread male screw 15 are locked to form a closed structure. Further, in order to fix the outer cylinder 7 to the inner plug 6, a plurality of vertically extending notches 8 ... Is provided in the skirt portion 4, and the inner cylinder 6 is inserted into the notches 8 ... Ridges 14 ... that can be formed, and the ridges 14 ... are matched with the notches 8 ..., and the skirt portion 4 is pushed down so as to cover the outer cylinder 7 from above, and both are integrated. Is preferable.

Further, it is preferable that the lower surfaces 15b ... Of the lower ends of the screw threads 15a of the multi-thread male screw 15 of the bottle neck 2 be formed in a horizontal plane and be aligned with each other.

[0007]

[Action]

 To open the bottle mouth 2 with the stopper 1, grip the outer cylinder 7 and turn it in the direction to loosen the screws 10 and 15, and the outer cylinder 7 and the inner plug 6 will be cut into the ridges 14 ... Since 8 ... are in an engaged state, they rotate together. When the inner plug 6 rotates in this way, the multiple thread female screw 10 and the multiple thread male screw 15 first start to be screwed together, and when further rotated, the multiple thread female screw 10 and the multiple thread male screw 15 are unthreaded, The inner plug 6 rises with respect to the bottle mouth 2, and the fitting portion 3 is easily removed from the inside of the bottle mouth 2. Since the inner plug 6 is always urged to the outside (upper side) from the bottle by the gas pressure of the carbonated drink, and the upper end of the multi-thread female screw 10 is in contact with the lower end of the multi-thread male screw 15, the inner plug 6 The multi-threaded female screw 10 and the multi-threaded male screw 15 start to be engaged with each other easily and surely simply by rotating, and it is not necessary to apply a force for pulling up the outer cylinder 7. Further, it is extremely safe that the plug 1 does not unexpectedly pop out due to the gas pressure when the plug is opened.

Further, since the respective lower surfaces 15b ... At the lower ends of the screw threads 15a ... Are formed in a horizontal plane and are aligned with each other, the screw threads of the multi-thread female screw 10 are in the plugged state. Since the upper ends of the 10a are securely and in contact with the lower surface 15b, which is located on a straight line, the depth of the insertion of the inner plug 6 into the bottle mouth 2 is constant, and a stable closure is achieved. It is possible to get the status.

[0009]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Here, FIG. 1 is a vertical cross-sectional front view showing a closed state, FIG. 2 is a front view of a bottle mouth, FIG. 3 is a partial vertical cross-sectional front view of an inner plug with a part cut away, and FIG. It is a figure. The closure structure of the present embodiment is composed of a plug body 1 and the bottle mouth 2 described later.

First, the plug 1 will be described. As shown in FIGS. 1 to 4, the plug body 1 used for the closure structure has a cylindrical fitting portion 3 having an open lower end, which can be tightly fitted inside the bottle mouth 2, and the outside of the bottle mouthpiece 2. A soft synthetic resin inner plug 6 formed integrally with a skirt portion 4 to be fitted together with a canopy portion 5, and a cylindrical hard synthetic resin tube with an open upper and lower end that covers the outer periphery of the skirt portion 4. It is composed of an outer cylinder 7.

As shown in FIGS. 1, 3 and 4, a small-diameter portion 3 a is formed in the lower portion of the fitting portion 3 of the plug 1 so that the outer diameter gradually decreases toward the lower end edge. Set up. Further, the skirt portion 4 of the plug body 1 is provided with a plurality of notches 8 extending vertically from the upper portion to the lower portion thereof, and a guide portion 9 in which an upper end portion between the notches 8 ... Is formed in a chevron shape.・ Provide. Further, on the inner peripheral surface of the lower part of the skirt portion 4, a multi-thread female screw 10 composed of four thread threads 10a, which are parallel and obliquely extending, is formed, and the thread threads 10a. It is formed so as to intersect with the cuts 8 ... In addition, the lower edge of the skirt portion 4 is provided with a protrusion 11 formed to slightly protrude to the outside of the periphery.

As shown in FIGS. 1 and 4, the outer cylinder 7 is slightly inwardly fitted so that the upper opening edge 12 thereof is engaged with the step formed on the peripheral edge of the canopy portion 5. In addition to being formed in a protruding manner, the lower edge 13 thereof is formed so as to bulge outwardly around the periphery, and a vertical portion is formed from the upper portion of the inner surface to the central portion thereof so as to correspond to the cuts 8 ... The ridges 14 ...

Next, the bottle mouth 2 will be described. As shown in FIG. 2, on the outside of the bottle mouth 2, a multi-thread male screw 15 composed of four parallel thread threads 15a extending obliquely is formed. On the lower side, a neck portion 16 having an outer diameter smaller than the inner diameter of the multi-thread female screw 10 portion, in which the multi-thread female screw 10 provided on the skirt portion 4 of the inner plug 6 is housed, is provided. Further, the lower surfaces 15 b ... At the lower ends of the screw threads 15 ... Are respectively formed on horizontal planes and are arranged so as to be located on a straight line that goes around the outer circumference of the bottle mouth 2.

In order to similarly close the bottle mouth 2 with the plug body 1 configured as described above, first, with the edge of the bottle mouth 2 positioned between the fitting portion 3 and the skirt portion 4 of the inner plug 6, The inner plug 6 is pressed against the bottle mouth 2 so that the multi-thread female screw 10 rides over the multi-thread male screw 15 and is plugged. At the time of this stoppering, the skirt portion 4 is made of a soft synthetic resin and provided with the notches 8 ..., It is easily bent, and the multiple thread female screw 10 can pass over the multiple thread male screw 15. Is. In this way, the multi-threaded female screw 10 which has passed over the multi-threaded male screw 15 is housed in the neck portion 16, and the thread 10a ... the upper end of the thread 15a ... It is locked to each horizontal lower surface 15b. Further, the outer cylinder 7 is pushed down so as to cover the skirt portion 4 from above, and the ridges 14 ... Guided by the guide portions 9 ... The inside of the lower edge 13 of the outer cylinder 7 is engaged with the protrusion 11 of the lower edge to complete the closure. At this time, since the protrusion 14 of the outer cylinder 7 is guided to the guide portion 9 and is securely inserted into the notch 8, it is not necessary to position the outer cylinder 7. In this closed state, since the inside of the lower edge 13 is engaged with the protrusion 11, there is no concern that the outer cylinder 7 may unexpectedly come off from the inside plug 6. Further, due to the gas pressure generated from the carbonated drink in the bottle, the screw thread 10a of the multi-thread female screw 10 ... The upper end is a horizontal lower surface 15b of the screw thread 15a of the multi-thread male screw 15 ... It is always pressed.

Next, the opening operation will be described. First, when the outer cylinder 7 is gripped and turned in the direction of loosening the screws 10 and 15, the outer cylinder 7 and the inner plug 6 are integrated because the ridges 14 ... And the notches 8 ... The inner stopper 6 rotates accordingly. During this turning operation, since the outer cylinder 7 is made of a hard synthetic resin, it is easy to operate without being distorted by the grip force. When the inner plug 6 is thus rotated, the multi-thread female screw 10 and the multi-thread male screw 15 in which the screw threads 10a, 15a are in a pressed state surely start to be screwed, and when further rotated, both screws 10, 15 disengages and the plug 1 rises with respect to the bottle mouth 2 and comes off the bottle mouth 2. When the stopper 1 is rotated, the inner stopper 6 is constantly urged to the outside (upper side) by the gas pressure of the carbonated beverage from the bottle, so that simply rotating the inner stopper 6 causes the inner cylinder to rotate. It is not necessary to apply a force such as pulling up, and the multi-thread female screw 10 and the multi-thread male screw 15 can be easily and surely screwed into each other and can be opened.

As described above, when the glass bottle is closed according to the present embodiment, it is extremely safe that the plug 1 does not unexpectedly jump out by the gas pressure at the time of the opening operation, and the screw threads 15a. Since the lower surfaces 15b ... At the lower end are each formed in a horizontal plane and are arranged so as to be aligned with each other, the thread 10a ... It is possible to obtain a stable closed state since the depth of contact with the lower surfaces 15b ... And the depth of the inner stopper 6 fitted into the bottle mouth 2 is constant. Further, as described above, when the outer cylinder 7 is gripped and the screws 10 and 15 are turned in the direction of loosening, the angle which can be rotated by one hand at a time is about 120 degrees. Since the thread 10a of the internal thread 10 and the thread 15a of the multi-threaded female thread 15 have four threads each, the multi-threaded female thread 10 and the multi-threaded female thread can be turned up to 90 degrees. No. 15 surely separates, and there is an advantage that it is not necessary to rotate the outer cylinder 7 again and again.

The present invention is not limited to the above-described embodiment, and for example, the outer cylinder 7 may be made of metal instead of hard synthetic resin, and the thread of the multi-thread female screw 10 may be used. 10a ... and the threads 15 of the multi-thread male screw 15 are not limited to four threads, but may be a plurality of threads, but four threads or three threads are preferable. Further, in order to make it easier to open the multi-threaded screws 10 and 15, the skirt portion 4 may be provided with a rib that abuts the thread 15a.

[0018]

[Effect of device]

 As described above, according to the present invention, the capping is performed by the stoppering system without the need for positioning, and the capping is performed by the screw type, so that the capping can be performed by using the usual stoppering machine. In addition, it is extremely safe because the stopper does not unexpectedly pop out due to the gas pressure of the contents of the bottle when the stopper is opened, and the opening operation is easy regardless of the change over time of the stopper. Play.

Further, according to the present invention, since each lower surface of the lower end of the screw thread is formed in a horizontal plane and is located on a straight line, the upper end of the screw thread of the multi-thread female screw can be securely held in the stoppered state. Since the depth at which the multi-threaded male screw is in contact with the lower surface of the lower end of the thread and the inside plug is fitted into the bottle mouth is fixed, a stable closed state can be obtained.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a closed state.

FIG. 2 is a front view of a bottle mouth.

FIG. 3 is a partial vertical sectional front view of an inner plug with a part cut away.

FIG. 4 is a partial vertical sectional front view of an outer cylinder.

FIG. 5 is a partial vertical sectional front view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug body 2 Bottle mouth 3 Fitting part 4 Skirt part 6 Inner plug 7 Outer cylinder 8 Notch 9 Guide part 10 Multi-thread female screw 14 Projection thread 15 Multi-thread male screw

Claims (2)

[Scope of utility model registration request] 1. A soft synthetic resin integrally formed with a cylindrical fitting portion that can be tightly fitted inside the bottle mouth and a skirt portion that can be fitted on the outside of the bottle mouth and that has a multiple thread female thread on the inner surface. While forming a plug body from a middle plug and a cylindrical outer cylinder made of a hard material that is fixed to the outside of the skirt portion, the multiple-thread male that can be screwed into the multiple-thread female screw on the outer surface of the bottle mouth A screw is provided, and in the state where the bottle mouth is located between the fitting portion and the skirt portion of the inner plug, the inner stopper is pressed against the bottle mouth to cap it, and the multiple thread female screw is replaced with the multiple thread male screw. A capping structure for a bottle of carbonated drink, characterized in that the upper end of the multiple-thread female screw and the lower end of the multiple-thread male screw are configured to be passed over and locked. 2. The bottle for carbonated drinks according to claim 1, characterized in that each lower surface of the lower end of each thread of the multi-thread male screw is formed in a horizontal plane and is positioned on a straight line. Closure structure.