SU1762756A3 - Lid for bottle or the like - 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

The invention relates to a cap according to the restrictive part of claim 1 for a bottle and the like.

The known bottle caps are either screw-on or kronchat. Both types of caps consist essentially of a cap-shaped part, which is connected to the neck of the bottle with a positive fit. There is also a seal between the cap and the neck of the bottle. Due to the flush connection, the bottle is sealed. Because of this, there is a risk that the bottle will be damaged by overpressure. Like plastic bottles and glass bottles, this can lead to breakdowns and liquid leakage, which can be dangerous if the contents are dangerous. In the case of glass bottles, there is in addition a risk of injury to people, in particular eye injuries due to flying glass fragments.

Plastic bottle caps for bottles are also known, which are mounted on the neck of the bottle. Just as the lids are fitted, they can be removed, the excess pressure is released, but the point at which they are subject to excessive pressure is not defined, and in addition, they do not close automatically after the excess pressure has been released.

From German No. 1432188 laid out, a cover of the mentioned type is known, having the form of a screw cap with an adherent plug which forms a piece detached from the screw cap and is connected to a screw cap with a frictional and locking closure. Thus, the sticky plug is nothing more than a special form of seal that is fixedly attached to a screw cap. Therefore, this screw cap is no different from the known, above mentioned screw caps and has the same drawbacks, in particular the danger of bursting.

A device according to US Pat. Switzerland, Ms 220476, in which a relief valve is provided to relieve excess pressure in the vessel. A disadvantage of this device is that it does not provide the exact position of the sealing part in combination with elasticity.

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This element reduces the reliability of the valve.

The purpose of the invention is to increase the reliability of the cover.

The purpose of the invention is achieved in that in a lid containing a cap-shaped holder with an inwardly directed protrusion for gripping the flange of the bottle neck and separated from the holder and connected to it by means of an elastic element, a sealing piece with an annular sealing surface for adherence to the end face of the bottle neck, the holder is provided with an abutment for abutting the holder to the end of the neck of the bottle.

FIG. 1 shows a first exemplary embodiment of the cap in a vertical section along part of the neck of the bottle; in fig. 2 shows section A-A in FIG. one; in fig. 3 - in the same image as FIG. i, second exemplary embodiment with a cork stopper; in fig. 4 - in the same image as FIG. 1, the third embodiment; in fig. 5 is the fourth exemplary embodiment; in fig. 6 - fifth exemplary embodiment; in fig. 7 is the sixth exemplary embodiment.

All figures show exemplary embodiments in the same image method.

In the exemplary embodiment shown in FIG. 1 and 2 in two vertical sections, one above the other, shows the upper part of the neck of the bottle 1, on which the holder 2 is located in the form of a cap, which is directed radially inwardly by the protrusion 3 and seizes the flange 4 on the neck of the bottle 1 and thus holds the holder. In this position, the holder 2 by the stop 5 lies on the end 6 of the neck of the bottle 1, so that its position is precisely defined.

In the area of the bottom of the holder 2 in the form of a cap, there is a circular recess 7, through which an elastic element in the form of a round rod 8 diametrically passes, the ends of which are fixed in the holder 2. In the middle zone of the rod 8, having a round or rectangular cross section, it spans with a geometric the closure by two tabs 9 located on the sealing part 10 on the side opposite to the sealing side of this part which forms a basically hard disk having a conical, annular sealing surface on its edges 11, tightly attached to the end face 6 of the neck of the bottle 1. If necessary, this conical sealing surface may also be covered with a soft sealing material.

The position of the anvil 5, the sealing part 10 and the rod 8 is such that the rod 8 is in the depicted closing position under a pre-voltage that, together with the surface of the sealing part 10, determines the pressure at which the sealing part 10 rises due to pneumatic or hydraulic pressure and

0 relieves excess pressure.

In the second exemplary embodiment of FIG. 3, the holder has the shape of a crown cap 12, which is held by crown bends 13 on the flange 4 of the neck

5 bottles 1 and, moreover, the stop 14 formed by pressing, rests on the end face 6 of the neck of the bottle 1, due to which it is precisely defined relative to the neck of the bottle.

0In this position, the crown cap

12 is loosely connected to the neck of the bottle 1.

In order to seal the opening of the neck of the bottle,

A disk 15 forming the sealing part, firmly connected in the center through the support 16 with the bottom 17 of the crown-shaped cap 12. At its edge, the disk 15 has a sealing tongue extending circumferentially.

0 18, adjacent to the end 6 of the neck of the bottle 1. The disk 15 and the sealing tongue 18 are made of an elastic material and are chosen so thin that the outer edge of the disk 15 can be pressed in, and the sealing tongue 18 extending around the circumference is raised, so that the overpressure can be reset. The crown cap 12, as usual, can be made of steel, and in particular, a disk 15 with passing

0 around the circumference sealing tab 18 - made of synthetic material. But it is possible to use another material, for example, tin.

In the third exemplary embodiment of FIG.

5 4, the holder 2 is made in principle, as in the exemplary embodiment of FIG. 2, but here the bottom 19 of the holder 2 is provided, like the bottom 17 in the embodiment of FIG. 3. In order to reliably relieve excess pressure through holder 2, a hole 20 is provided in the bottom 19.

At the bottom 19 there is a support 21 connected through a conical latching 5 connection 22 with a disk 23 corresponding to the disk 15 in FIG. 3 and made of an elastic-elastic material, so that, in particular, the edges of the disk 23 can be lifted from the edge 6 of the neck of the bottle 1 under overpressure. In this case

The embodiment can also make the bottom 19 very thin and elastic, so that it forms a spring element, in which case the disk 23 may be rigid. If necessary, the bottom 19 and the disk 23 can be optionally elastic-elastic.

In the fourth embodiment of FIG. 5, the holder 2 is made basically as in the embodiment of FIG. 4, but a rigid disc-shaped sealing part 24 is provided here, which rests spring through the elastic spring lugs 25 on the bottom 19. In this embodiment example, radially from the stop 5 an annular protrusion 26 extends inwardly, the gripping sealing part 24 on its sealing side, so that the sealing part 24 is firmly connected to the holder 2.

The fifth exemplary embodiment in FIG. 6 corresponds substantially to the exemplary embodiment of FIG. 5 with the difference that instead of the protrusions 25 in the intermediate space between the bottom 19 and the sealing part 24 there is an elastic rod 27 in the form of a pre-curved leaf spring. By sizing and bending the leaf spring, the spring load is precisely set, which determines the overpressure at which the sealing part 24 is raised to relieve the overpressure.

The sixth exemplary embodiment in FIG. 7 corresponds to a considerable extent to the embodiment of FIG. 3. The difference is that instead of the resilient disk 15, a generally rigid sealing part 28 is provided, which through the elastic-elastic foam part 29 rests on the bottom 17 of the crown 12. The foam part 29 can be simply glued to adjacent flat parts, so that the sealing part 28 is firmly and inherently connected to the bottom 17 and thereby to the crown cap 12.

Claims (9)

1. A cap for a bottle or the like, comprising a cap-shaped holder with an inwardly directed protrusion gripping the flange of the bottleneck and separated from the holder, connected to it by means of an elastic element, a sealing part with an annular sealing surface for adhesion to the end a bottleneck, wherein a safety valve is formed, which is such that, in order to increase reliability in operation, the holder is provided with a stop to rest the holder against the end of the bottleneck. 2. A cover according to claim 1, characterized in that the elastic element is made in the form of a flexible rod, the ends of which are fixed in the holder and which is fixed to the sealing part on the side opposite to the sealing side of this part. 3. A cap according to claim 1, characterized in that the sealing part is made elastic in the region of the edges. 4. The cap according to claim 1, characterized by topics that the elastic element is made of foamy material or in the form of elastic protrusions attached to the sealing part or the bottom of the holder. 5. A cap according to claim 1, characterized in that the support is provided with an annular projection radially inwardly directed to contact with the sealing part on the sealing side of this part. 6. Cover on PP. 1-5, characterized in that the area of the sealing part is larger than the area of the opening of the bottle neck. 7. The cap according to claim 1, characterized in that the holder and / or sealing Part and / or elastic element made of plastic. 8. A cap according to claim 2, characterized in that the flexible rod is made of metal, in particular of steel. 9. The lid of claim 2, wherein the rod has a round or angular, in particular a rectangular cross section. J.5 .. 25 V ut  /////.л. 24/3 . one 26 28 27 pL / e.5 one FIG. 6