JPH01213166A - Closing cover for bottle or similar article - Google Patents

Abstract

PURPOSE: To prevent the danger of bursting of bottles caused by the overpressure by connecting a seal part with a holding part through an elastic member or providing the seal part with the elasticity to form an overpressure valve. CONSTITUTION: A holding part 2 is engaged with a raised part 4 of a bottle neck 1 through a collar 3. The holding part 2 is mounted on an upper edge 6 of the bottle neck 1 through a stopper 5, and a position of the holding part 2 is correctly regulated. A round rod 8 is extended to a bottom of the holding part 2 through a round notch 7, and the rod 8 is molded with plastic integrally with the holding part 2. The rod 8 is removably grasped by two lips 9, a seal part 10 is formed by a rigid disc, and an edge part of the same comprises a seal face 11 to be closely kept into contact with the upper edge 6 of the bottle neck 1. In the close position, the rod 8 is located under a preload, the preload is related to a face of the seal part 10, so that the seal part 10 is lifted up by the pneumatic pressure or hydraulic pressure to prevent the overpressure, whereby the bursting of bottles can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The invention relates to a closure lid for bottles or the like, which engages from behind a cap-like retaining part and an external bulge on the neck of the bottle. A ring having an inwardly protruding protrusion or collar and a sealing part separate from and connected to the holding part, the sealing part contacting the end face of the bottle neck. It relates to a type having a shaped sealing surface.

Known closures for prior art bottles are screw-on closures or crown-shaped closures. Both types of closures essentially consist of a cap-like part which is connected positively to the bottle neck. A sealing element is further provided between the closure lid and the bottle neck. Due to the form-fitting connection, the bottle is closed securely against pressure. There is therefore a risk of damage to the bottle in the event of overpressure. Whether the bottle is made of plastic or glass, this results in breakage and spillage of liquid, which represents a considerable risk if the contents of the bottle are hazardous. In the case of glass bottles, there is also the risk of injury to people, especially their eyes, from flying glass fragments.

It is also known to use plastic cap-like closures for bottles that snap onto the bottle neck.

Similar to snap-on connections, the closure lid can be removed to relieve overpressure; however, it is not possible to define the point at which the closure cap succumbs to overpressure; It does not automatically close after being released.

A closure lid of the above type known from DE-O 31 43 2 188 is in the form of a screw-on closure cap with a fastening plug, which fastening plug forms a separate part from the screw-on closure cap; It is frictionally and positively connected with a screw-on closure cap. The fastening plug thus has the same shape as the special shape of the sealing element which is fixedly connected to the screw-on closure cap. This known screw-on closure cap therefore does not differ from the known screw-on closure caps of the type mentioned at the outset and has the same disadvantages, including the risk of breakage.

In the screw-on closure camp disclosed in US Pat. No. 2,950,833, the bottom is formed from two disk halves, both disk halves being pivotally connected to a common diametrical axis. The cap thus formed rests loosely on the edge of the cylindrical threaded section. It is therefore not possible to close the bottle tightly with this known screw-on closure cap, and the problem of avoiding unacceptably high overpressures does not arise in the first place.

SUMMARY OF THE INVENTION It is therefore an object of the invention to provide a closure lid of the type mentioned at the outset, which makes it possible to avoid the risk of bottle bursting due to overpressure.

Means for Solving the Object In order to achieve this object, the present invention provides that the sealing part is connected to the holding part via an elastic member or is itself designed elastically and that Make sure the pressure valve is formed.

Operation and Advantages of the Invention The invention is based on the idea of configuring the closing lid in the form of an overpressure valve whose dimensions are such that no unacceptably high pressures can build up. By letting the gas or liquid escape, the pressure is limited to the maximum allowable value. The bottle therefore does not burst, and thus accidents, especially in the case of glass bottles, such as injuries to the eyes from flying glass fragments, are avoided. Plastic bottles also pose a great danger if they contain dangerous liquids. Bottles filled with liquid, such as highly carbonated lemon powder bottles, are usually stored and transported upright, so overpressure can only escape in the form of gas, and therefore the liquid will not leak. Therefore, the disadvantage of partial escape of carbon dioxide is insignificant compared to the advantage of relief of overpressure.

According to claim 2, the holding part has a stop for a defined contact of the holding part at the edge of the bottle neck. The seal part is also placed on the edge of the bottle neck.
The mutual position of the sealing part and the retaining part is thereby precisely defined, since there is usually further inner contact.

Since an elastic member is provided between the two to apply a preload to the sealing part, the preload value of the elastic member and, therefore, the pressure at which the sealing part is lifted, that is, the pressure at which the overpressure valve opens, can be precisely specified. be done.

The elastic member is also formed by a flexible rod which engages the cylindrical retaining part at both ends thereof and which engages the sealing side of the sealing part in a central area between the two ends. may be in contact with the seal portion on the opposite side. This rod may be made of metal, in particular steel, so that its elastic properties can be maintained over a long period of time and the opening pressure of the overpressure valve can also be maintained accurately over a long period of time. can.

The elastic element can also be formed by the sealing part itself, in which case the sealing part is constructed in an elastic manner, for example by thin dimensions or by a suitable selection of materials. The elastic flexibility may occur only partially, for example in the edge region.

The holding part and the sealing part may be rigidly connected to each other via an elastic member. This bond may be releasable, for example in the form of a snap bond.

The sealing part may be in the form of a rigid disk, in which case the elastic member is also in the form of a surface, for example in the form of a foam disk or in the form of a plurality of distributed spring lips or the like. It may be composed of. Particularly in the case of the last mentioned example, it is advantageous if the holding part is provided with a radially inwardly projecting annular collar, which engages the sealing side of the sealing part from behind. With this configuration, the seal portion can be held inside the camp-shaped holding portion so as not to be lost. This arrangement also allows a preload to be applied to the elastic member.

All parts of the closure lid can be manufactured from plastic or metal, depending on its requirements and reusability. The type of connection between the holding part and the bottle neck is likewise arbitrary. This type of connection can thus be a frictional connection, but a form-fitting connection of arbitrary form is advantageous, as for example in cork crowns or screw closures.

Example Next, embodiments of the present invention will be described with reference to the drawings.

In the exemplary embodiments, all the drawings are shown in the same form and identical or corresponding parts are provided with the same reference symbols.

In the embodiment shown in two mutually perpendicular longitudinal sections in FIGS. 1 and 2, only the upper part of the bottle neck l is shown, which has a cap-like holding part 2. is located. This holding part is a collar 3 which projects radially inward and engages from behind an upper bulge 4 provided on the bottle neck l to hold the holding part. In this state, the holding part 2 rests with the stop 5 on the upper edge 6 of the bottle neck l, so that the position of the holding part 2 is precisely defined.

In the bottom area of the cap-like holding part 2 there is a round cutout 7
A round rod 8 extends diametrically through this cutout. This rod is constructed in one piece with the holding part 2, that is to say it is pressed together with this holding part from plastic. The rod 8 is gripped in its central region in a positive-fitting manner in a releasable manner by two lips 9, which form a sealing part l.
O, this sealing part lO forms a substantially rigid disk, which has at its edge a conical, ring-shaped sealing surface 11, which seals on the bottle. It is in close contact with the upper edge 6 of the neck 1. Optionally, this conical sealing surface 11 may also be coated with a softer sealing material.The position of the stop 5, the sealing part 10 and the rod 8 is such that in the illustrated closed position the rod 8 is under preload. This preload defines, in relation to the surface of the sealing part 10, the pressure at which the seal part 10 can be raised based on the pneumatic pressure or the Hy-II-' drolic pressure to avoid overpressure.

In the second embodiment shown in FIG. 3, the holding part is in the form of a crown cap 12, which is held in the bulge 4 of the bottle neck 1 with a crown-shaped inward bend 13. It is supported on the upper edge 6 of the bottle neck l by a stopper 14 formed in this case by pressing, whereby the position of the crown cap 12 relative to the bottle neck l is precisely defined. In this position, the crown cap 12 is not tightly connected to the bottle neck l.

In this example, to seal the opening of the bottle neck l:
A dish-like body 15 forming a part of the ring acts. This plate-shaped body 1
5 is rigidly connected in the center via a support 16 to the bottom 17 of the crown camp 12. At its edge, the dish 15 has an annular sealing lip 18, which contacts the upper edge 6 of the bottle neck 1. The dish 15 and the sealing lip 18 are made of an elastically flexible material, the thickness of which is such that when the outer edge of the dish 15 flexes, the annular sealing lip 18 lifts to relieve overpressure. It is as thin as it can be. crown cap 12
is generally made of sheet metal, whereas in particular the dish 15 with the annular sealing lip 18 is made of plastic material.

However, it may also be another material, for example a sheet metal.

In the third embodiment shown in FIG. 4, the holding part 2 is constructed in principle the same way as in the embodiment of FIG.
However, a bottom 19 of the holding part 2 is provided, similar to the bottom 17 in the embodiment of FIG. In order to ensure that overpressure escapes through the holding part 2, holes 20 are provided in the bottom 19.

A support 21 is provided on the support 16, and this support 21
is connected to a dish-shaped body 23 via a conical snap connection 22. This dish 23 corresponds to the dish 15 in FIG. can be lifted from. In this embodiment, the bottom 19 can also be configured to be extremely thin and elastically flexible,
As a result, the bottom 19 forms a spring element, in this case the dish 2
3 may be rigid.

In the fourth embodiment shown in FIG. 5, the holding part 2 is constructed essentially the same as in the embodiment shown in FIG.
is provided, the sealing part 24 being resiliently supported on the bottom 19 by an elastic spring lip 25. In this embodiment, an annular collar 26 extends inwardly from the stopper 5 and engages the outer edge of the sealing part 24 from behind, so that the sealing part 24 cannot be lost. It is connected to the holding part 2.

The fifth embodiment shown in FIG. 6 corresponds approximately to the embodiment of FIG. A spring bar 27 in the form of a pre-curved leaf spring is arranged. The dimensions and degree of curvature of the spring bar 27 determine the spring force which defines the overpressure at which the sealing part 24 is raised, so that the overpressure can be relieved.

The sixth embodiment shown in FIG. 7 substantially corresponds to the embodiment of FIG. The difference in this case is that instead of the flexible dish 15 there is a substantially rigid sealing part 28, which sealing part 28 has an elastically flexible foam body 29. It is supported on the bottom 17 of the crown cap 12 via the crown cap 12. The foam body 29 may simply be glued to the adjacent surface part, so that the sealing part 28 is firmly and securely connected to the bottom 17 and thus to the crown cap 12.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the bottle neck showing the first embodiment of the closure lid according to the present invention, Fig. 2 is a sectional view taken along line 1 - 2 in Fig. FIG. 4 is a longitudinal sectional view similar to FIG. 1 showing the third embodiment; FIG. 4 is a longitudinal sectional view similar to FIG.
FIG. 5 is a diagram showing the fourth embodiment, FIG. 6 is a diagram showing the fifth embodiment, and FIG. 7 is a diagram showing the sixth embodiment. ■... Bottle neck, 2... Holding part, 3... Collar, 4... Protrusion, 5... Stopper, 6... Upper edge, 7... Notch, 8... ...Rod, 9...Lip,
10... Seal part, 11... Seal surface, 12...
- Crown cap, 13... Inward bending part, 14... Stopper, 15... Dish-shaped body, 16... Support, 17...
・Bottom, 18...Seal lip, 19...Bottom, 20・
... hole, 21 ... support, 22 ... snap joint,
23... Dish-shaped body, 24... Seal portion, 25...
Spring lip, 26... Collar, 27... Spring bar, 2
8... Seal part, 29... Form body cultivation
Person Patent Attorney Toshio YanoFIG
, 2 FIGt FIG, 5 FIG, 6 FIG, 7

Claims (1)

[Claims] 1. A closure lid for a bottle or the like, comprising a cap-like retaining part and an inwardly projecting protrusion that engages from behind the outer bulge of the neck of the bottle. and a sealing portion separate from and coupled to the holding portion, the sealing portion having a ring-shaped sealing surface that contacts the end surface of the bottle neck. In this type, the sealing portion (10) is made of an elastic member (
8) with the retaining part (2) or
A closure lid for bottles or the like, which is itself of elastic construction and is characterized in that an overpressure valve is formed. 2. The holding part (2) has a stopper (
5) The closure lid according to claim 1, comprising: 5). 3. The elastic member is formed by a flexible rod (8) which engages the cylindrical retaining part (2) at its ends and forms a sealing part in the area between the ends. (10
2. A closure lid according to claim 1, wherein the closure lid is supported on the sealing portion on the side opposite the sealing side of the closure lid. 4. The sealing part is provided with an elastic dish (
15, 23), and the dish-shaped body is supported in the center (16, 2
1) supported against the retaining part (2);
A closure lid according to claim 1. 5. Closing lid according to claim 4, characterized in that the dish (15, 23) is rigidly connected to the holding part (12, 2) via the support (16, 21). 6. Closure lid according to claim 5, characterized in that the dish (23) is connected to the support (21) and/or the support to the holding part via a snap connection (22). 7. Closing lid according to claim 4, wherein the support (16) and the dish (15) form one part. 8. Closing lid according to claim 1, wherein the sealing part (10) is substantially in the form of a rigid disc. 9. Closure lid according to claim 1, characterized in that the elastic element (29) is arranged in a planar manner between the bottom (17) of the cap-shaped holding part (12) and the sealing part (28). . 10. The elastic member (29) is formed by a foam body or by an elastic protrusion, lip (25) or similar arranged on the bottom (19) or sealing part of the cap-like retaining part (2). 10. The closure lid according to claim 9, wherein the closure lid is formed of. 11. The holding part (2) is provided with an annular collar (26) projecting radially inward, which collar engages the sealing side of the sealing part (2) from behind;
A closure lid according to claim 1. 12. The disc-shaped seal part (10) is attached to the bottle neck (1)
9. A closure lid according to claim 8, wherein the closure lid is only slightly larger than the inner diameter of the closure lid. 13. Claim 1, wherein the holding part and/or the sealing part and/or the elastic member (8) consist of plastic.
Closed lid as described. 14. Closure lid according to claim 3, characterized in that the flexible rod (8) consists of steel. 15. Closing lid according to claim 14, wherein the rod has a circular or square cross section.