EP0858416B2 - Closure for a bottle or the like - Google Patents

Closure for a bottle or the like Download PDF

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Publication number
EP0858416B2
EP0858416B2 EP96937235A EP96937235A EP0858416B2 EP 0858416 B2 EP0858416 B2 EP 0858416B2 EP 96937235 A EP96937235 A EP 96937235A EP 96937235 A EP96937235 A EP 96937235A EP 0858416 B2 EP0858416 B2 EP 0858416B2
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EP
European Patent Office
Prior art keywords
neck
bottle
projection
sealing part
sealing element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP96937235A
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German (de)
French (fr)
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EP0858416B1 (en
EP0858416A1 (en
Inventor
Michael Hertrampf
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Safety Cap System AG
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Safety Cap System AG
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Priority claimed from DE19613830A external-priority patent/DE19613830C2/en
Application filed by Safety Cap System AG filed Critical Safety Cap System AG
Publication of EP0858416A1 publication Critical patent/EP0858416A1/en
Publication of EP0858416B1 publication Critical patent/EP0858416B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
    • B65D41/04—Threaded or like caps or cap-like covers secured by rotation
    • B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
    • B65D41/0414—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck
    • B65D41/0421—Threaded or like caps or cap-like covers secured by rotation with integral sealing means formed by a plug, collar, flange, rib or the like contacting the internal surface of a container neck and combined with integral sealing means contacting other surfaces of a container neck
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B65D51/1633—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element
    • B65D51/1661—Closures not otherwise provided for with means for venting air or gas whereby venting occurs by automatic opening of the closure, container or other element by means of a passage for the escape of gas between the closure and the lip of the container mouth

Definitions

  • the invention relates to a closure in the Preamble of claim 1 mentioned type for a bottle or similar.
  • Such a closure is for example by German utility model 93 14 226 known.
  • the sealing part is designed as a seal with the result that bulges of the floor not so transferred to the projection on the sealing part be that the projection is not so of the Inner surface of the bottle neck relieved of pressure or lifted off is that a functional pressure relief valve is formed.
  • GB 2 013 635 A is a closure similar to that known type in which the radial projection on the sealing part on the inner wall of the bottle neck immediately in the area of his inner Muzzle edge rests.
  • the cylindrical sealing part is very short, and the protrusion on its outer surface lies near the bottom of the cap-shaped Closure part.
  • the floor is flexible under pressure auswölbbar.
  • the sealing protrusion follows when it bulges this essentially axial bulging movement, until it reaches a certain overpressure and thus a certain bulge from the inner Mouth edge of the bottle neck is released and so forms a gap through which excess pressure escapes can. In this way, a pressure relief valve is through the closure formed with which the bottle burst and the associated dangers are avoided.
  • a disadvantage of this known closure consists in that in practice that acting as a valve seat front inner edge of the mouth of the bottle neck has a high manufacturing inaccuracy, so that no defined system of the sealing projection especially in the critical area, in which the pressure relief valve formed by the closure opens and closes again.
  • the inner muzzle the neck of the bottle is damaged, which lead to a leak.
  • a closure is similar by GB 958 417 of the type in question, also known as a screw cap is formed, the projections on the inside at its bottom has that serve as stops and at Screw the screw cap onto a bottle neck come to rest outside on its front edge. This will stretch the outer, the thread part of the cap not used for this, to give the floor axial mobility.
  • the elasticity of this axial mobility is decisive is for the opening pressure, but for the flexibility only the area between the cylindrical sealing part and the outer edge of the end face of the bottle neck available, the bottom must be very thin, in order to achieve sufficient elastic compliance. This is disadvantageous, especially since there are manufacturing tolerances to a particular degree.
  • the invention has for its object a Closure of those mentioned in the preamble of claim 1 Way of creating inaccuracies or damage to the front inside edge the mouth of a bottle neck not disadvantageous impact and their sealing effect even with frequent Pressure changes are not affected.
  • the basic idea of the invention is to open the between the fastener and a neck of a bottle formed relief valve not by an axial movement of the sealing
  • This radial movement is achieved in that in the ground immediately radially outside of the cylindrical sealing part a cross-sectional constriction acting as a swivel joint is provided.
  • a rib is arranged between the bottom of the closure cap and the cylindrical sealing part, which stiffens the angle lever formed by the bottom and the closure part.
  • the movement of the base is more effectively transmitted to the cylindrical sealing part during a bulge as a result of increasing pressure in a closed bottle, and the pressure relief or lifting of the projection is thus ensured, in particular against the internal pressure acting radially outwards on the sealing part.
  • the arrangement of only one rib is sufficient in the simplest cases.
  • the radial sealing projection is axially arranged that with all occurring bulges of the Soil due to overpressure in the area of essentially cylindrical inner surface of the neck of the bottle lies.
  • the closure member radially outside of acting as a hinge Cross-sectional narrowing an axial Stop to contact an opposite one Counter stop on the neck of the bottle.
  • the stop in the radial area of the the counter face forming a face Bottle neck arranged.
  • the stop can, for example simply by the extended thought Soil be formed against the end face of a Bottleneck strikes and so a firm position of the Closure bottom causes in the outer edge area, whereby Movements of the swivel in the axial direction and thus also axial movements of the projection of the sealing surface formed are excluded and thus also a friction of the sealing surface on the cylindrical Inner surface of the bottle neck.
  • this sealing surface in the case of changes in curvature caused by pressure fluctuations the bottom of the closure part do not occur.
  • the axial stop be designed on the closure part so that overpressure can escape through the stop. Is the Stop ring-shaped, this can escape through radial channels or passages can be ensured.
  • the attack can also be discrete Act individual stops that span the scope of the Closure part are arranged distributed and so between culverts are formed.
  • the stop can also be designed in this way be on a ledge on the outside of the bottle neck strikes, which then forms the counterstop.
  • the rib extends in the area their transition to the sealing part axially into one Area away from the sealing tab. This remains axially between the rib and the Head start an unstiffened and therefore elastic Area.
  • the rib extends in the area of her Transition into the ground up to a radial area away from the axis or the center of the closure part. This will affect the Arching of the floor counteracted with increasing pressure and thus the effect as a pressure relief valve improved.
  • the cross-sectional narrowing arranged radially so that the formed by them Swivel on the extended inner surface the neck of a bottle. Due to this location the Narrowing and thus the swivel joint is ensured that the on the inner wall of a bottle neck Radial sealing protrusion against bulges the bottom of the cap only ever transverse to the inner surface of the bottle neck is relieved of pressure or lifted off. This will make rubbing movements of the sealing projection in the axial direction along the inner surface of the bottle neck counteracted and thus also wear and leaking.
  • the drawing shows in section and partially cut away a screw cap Closure part 1, screwed onto one only with his front part shown neck 2 of a bottle.
  • the Closure part 1 has a bottom 3, from which axially into the interior of the neck 2 a cylindrical Sealing part 4 extends one on the outside Has projection 5 on a cylindrical inner surface 6 of the neck 2 abuts.
  • the outer diameter the projection 5 is slightly larger than the diameter the inner surface 6 dimensioned such that the Projection 5 in the screwed-on state shown with a predetermined force on the inner surface 6.
  • the projection 5 does not come with a front Inner edge 7 of the mouth of the neck 2 in contact.
  • the bottom 3 points directly radially outside the sealing part 4 has a cross-sectional constriction 8, which forms a swivel around which the angle lever is rotatable is that by the sealing part 4 and the Cross-sectional constriction 8 extending radially inwards Part of the bottom 3 is formed.
  • An outer cylindrical holding part 12 of the closure part 1 has an internal thread on its inside 13, which is in an external thread 14 on the neck 2 the bottle intervenes. Also located on the inside the holding part 12 has an axial rib 9 with a stop 10, which bears against a counter-stop 11, the End face of the neck 2 of the bottle is formed. attack 10 and counter stop 11 thus determine one exact and in particular fixed position of the by the Cross-sectional constriction 8 formed hinge.
  • a rib 15 is arranged, which are firmly connected to the bottom 3 and the sealing part 4 is and consists of one piece with these.
  • the rib 15 is triangular and extends radially Direction to an area away from that sealing projection 5, but ends in a radial ial Area away from an axis 16. Through this the radial inward expansion becomes small Stiffening of the bottom 3 in terms of curvatures is low held.
  • the neck-shaped bottle In use, after filling, the the neck-shaped bottle the cap-shaped Closure part 1 screwed onto the neck 2 until the Stop 10 on the counter stop 11 to the system comes.
  • the projection 5 slides on the sealing part 4 on the inner surface 6 of the neck 2 and so seals the inside of the bottle.
  • an overpressure for example in that it the gas is developing around a gas pressure Beverage acts, the bottom 3 bulges axially outside, causing its edges to rotate around the one Execute cross-sectional constriction 8 which represents the swivel joint. This leads to a pivoting of the the sealing part 4 formed arm radially inwards and thereby reducing the force with which the lead 5 rests on the inner surface 6 of the neck 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Prostheses (AREA)

Abstract

PCT No. PCT/EP96/04646 Sec. 371 Date Apr. 17, 1998 Sec. 102(e) Date Apr. 17, 1998 PCT Filed Oct. 25, 1996 PCT Pub. No. WO97/16356 PCT Pub. Date May 9, 1997A closure for a bottle, comprising a cap-shaped closure component; a projection directed inwardly from an edge of the cap-shaped closure component to grip behind an outwardly directed projection at a neck of a bottle; a substantially cylindrical sealing element extending axially from a bottom of the closure component, the sealing element being disposed within the closure component; and a radial projection formed outside of the sealing element and disposed away from the bottom and having a diameter larger than the inside diameter of the neck of the bottle to be sealed by the closure means in such a way that a sealing surface formed by the radial projection tightly rests against an inside surface of the neck in a closed mode. The bottom comprises a cross-sectional slimming disposed radially beyond the cylindrical sealing element, the slimming having a thickness less than the thickness of an adjacent portion of the bottom such that the slimming functions as a hinge. The bottom and the sealing element form an elbow lever pivotable about the hinge. At least one rib is disposed in a space formed between the bottom and the sealing element to brace the sealing element against movement relative to the bottom, such that upon bulging of the bottom the radial projection is substantially radially detached from the inside surface of the neck by a lever action of the elbow lever pivotable about the hinge.

Description

Die Erfindung betrifft einen Verschluß der im Oberbegriff des Anspruchs 1 genannten Art für eine Flasche oder dergleichen.The invention relates to a closure in the Preamble of claim 1 mentioned type for a bottle or similar.

Ein derartiger Verschluß ist beispielsweise durch das deutsche Gebrauchsmuster 93 14 226 bekannt. Bei diesem bekannten Verschluß ist das Dichtteil als Dichtung ausgebildet mit der Folge, daß Auswölbungen des Bodens nicht derart auf den Vorsprung an dem Dichtteil übertragen werden, daß der Vorsprung nicht derart von der Innenfläche des Flaschenhalses druckentlastet oder abgehoben wird, daß ein funktionsfähiges Überdruckventil gebildet ist.Such a closure is for example by German utility model 93 14 226 known. With this known closure, the sealing part is designed as a seal with the result that bulges of the floor not so transferred to the projection on the sealing part be that the projection is not so of the Inner surface of the bottle neck relieved of pressure or lifted off is that a functional pressure relief valve is formed.

Durch GB 2 013 635 A ist ein Verschluß ähnlich der betreffenden Art bekannt, bei dem der radiale Vorsprung an dem Dichtteil an der Innenwandung des Flaschenhalses unmittelbar im Bereich seiner inneren Mündungskante anliegt. Das zylindrische Dichtteil ist sehr kurz, und der Vorsprung an seiner Außenfläche liegt nahe dem Boden des kappenförmigen Verschlußteils. Der Boden ist nachgiebig bei Überdruck auswölbbar. Bei Auswölbung folgt der dichtende Vorsprung dieser im wesentlichen axialen Auswölbungsbewegung, bis er bei einem bestimmten Überdruck und somit einer bestimmten Auswölbung von der inneren Mündungskante des Flaschenhalses freikommt und so einen Spalt bildet, durch den Überdruckentweichen kann. Auf diese Weise ist durch den Verschluß ein Überdruckventil gebildet, mit dem ein Bersten der Flasche und die damit verbundenen Gefahren vermieden werden.GB 2 013 635 A is a closure similar to that known type in which the radial projection on the sealing part on the inner wall of the bottle neck immediately in the area of his inner Muzzle edge rests. The cylindrical sealing part is very short, and the protrusion on its outer surface lies near the bottom of the cap-shaped Closure part. The floor is flexible under pressure auswölbbar. The sealing protrusion follows when it bulges this essentially axial bulging movement, until it reaches a certain overpressure and thus a certain bulge from the inner Mouth edge of the bottle neck is released and so forms a gap through which excess pressure escapes can. In this way, a pressure relief valve is through the closure formed with which the bottle burst and the associated dangers are avoided.

Ein Nachteil dieses bekannten Verschlusses besteht darin, daß in der Praxis die als Ventilsitz wirkende vordere Innenkante der Mündung des Flaschenhalses eine hohe Fertigungsungenauigkeit hat, so daß dadurch keine definierte Anlage des dichtenden Vorsprunges gerade in dem kritischen Bereich gewährleistet ist, in dem das durch den Verschluß gebildete Überdruckventil öffnet und wieder schließt. Hinzu kommt, daß bei solchen Flaschen, insbesondere Glasflaschen, die mehrfach wiederverwendet werden, die innere Mündungskante des Flaschenhalses Beschädigungen aufweist, die zu einer Undichtigkeit führen.A disadvantage of this known closure consists in that in practice that acting as a valve seat front inner edge of the mouth of the bottle neck has a high manufacturing inaccuracy, so that no defined system of the sealing projection especially in the critical area, in which the pressure relief valve formed by the closure opens and closes again. In addition, at such bottles, especially glass bottles that can be reused several times, the inner muzzle the neck of the bottle is damaged, which lead to a leak.

Ein weiterer Nachteil dieses bekannten Verschlusses besteht darin, daß der dichtende Vorsprung bei Druckänderungen, die in der Praxis durch Erwärmung und Wiederabkühlung des Inhalts der mit dem Verschluß verschlossenen Flasche vorkommen, ständig axiale Gleitbewegungen auf der als Ventilsitz wirkenden vorderen Innenfläche der Flaschenmündung ausführt, was zu einem Abrieb oder zu Beschädigungen der Dichtfläche an dem Vorsprung führen kann, die eine Undichtigkeit nach sich ziehen.Another disadvantage of this known closure is that the sealing projection in the case of pressure changes caused in practice by heating and cooling the contents of the with the The bottle is closed, constantly axial sliding movements on the acting as a valve seat front inner surface of the bottle mouth executes what leads to abrasion or damage the sealing surface on the projection can lead to a Cause leakage.

Schließlich besteht ein Nachteil dieses bekannten Verschlusses darin, daß die Forderung nach einer axialen Beweglichkeit eine axiale Nachgiebigkeit der Kappe außerhalb des zylindrischen Dichtteils erfordert. Diese Forderung wird bei diesem bekannten, als Schraubkappe ausgebildeten Verschluß durch eine Scherung des Bodens außerhalb des zylindrischen Dichtteils und durch eine axiale Dehnung des äußeren zylindrischen Teils erreicht. In die Dehnung geht jedoch die Vorspannung ein, die von dem Aufschraubdrehmoment abhängig ist, jedenfalls beim Gebrauch durch den Verbraucher wiederum davon abhängig ist, mit welchem Drehmoment der Verbraucher die Schraubkappe aufschraubt. Die Folge davon ist, daß der Druck, bei dem aus Sicherheitsgründen eine Druckentlastung stattfinden soll, nicht fest bestimmt, sondern vom Zufall abhängig ist, so daß die gewünschte Sicherheit nicht erreicht wird, um ein Bersten der Flasche bei zu hohem Druck zu vermeiden.Finally, there is a disadvantage to this known one Closure in that the demand for a axial mobility an axial compliance the cap outside of the cylindrical sealing member required. This requirement is known in this, as Screw cap formed by a closure Shear of the soil outside the cylindrical Sealing part and by axial expansion of the outer cylindrical part reached. However, the stretch goes the preload by the screwing torque is dependent, at least when used by the Consumer in turn depends on which one Torque of the consumer the screw cap unscrewing. The consequence of this is that the pressure at a pressure relief for safety reasons should take place, not determined, but by chance is dependent so that the desired security is not achieved to prevent the bottle from bursting if it is too high To avoid pressure.

Durch GB 958 417 ist ein Verschluß ähnlich der betreffenden Art bekannt, der ebenfalls als Schraubkappe ausgebildet ist, die innen an ihrem Boden Vorsprünge aufweist, die als Anschläge dienen und beim Aufschrauben der Schraubkappe auf einen Flaschenhals außen an dessen Stirnkante zur Anlage kommen. Dadurch wird die Dehnung des äußeren, das Gewinde aufweisenden Teils der Kappe nicht dafür ausgenutzt, dem Boden eine axiale Beweglichkeit zu verleihen. Da die Elastizität dieser axialen Beweglichkeit maßgebend für den öffnungsdruck ist, für die Nachgiebigkeit aber nur der Bereich zwischen dem zylindrischen Dichtteil und der Außenkante der Stimfläche des Flaschenhalses zur Verfügung steht, muß der Boden sehr dünn sein, um eine ausreichende elastische Nachgiebigkeit zu erreichen. Dies ist nachteilig, zumal sich dabei Herstellungstoleranzen im besonderen Maße auswirken.A closure is similar by GB 958 417 of the type in question, also known as a screw cap is formed, the projections on the inside at its bottom has that serve as stops and at Screw the screw cap onto a bottle neck come to rest outside on its front edge. This will stretch the outer, the thread part of the cap not used for this, to give the floor axial mobility. There the elasticity of this axial mobility is decisive is for the opening pressure, but for the flexibility only the area between the cylindrical sealing part and the outer edge of the end face of the bottle neck available, the bottom must be very thin, in order to achieve sufficient elastic compliance. This is disadvantageous, especially since there are manufacturing tolerances to a particular degree.

Der Erfindung liegt die Aufgabe zugrunde, einen Verschluß der im Oberbegriff des Anspruchs 1 genannten Art zu schaffen, beim dem sich Ungenauigkeiten oder Beschädigungen an der vorderen Innenkante der Mündung eines Flaschenhalses nicht nachteilig auswirken und deren Dichtwirkung auch bei häufigen Druckänderungen nicht beeinträchtigt wird.The invention has for its object a Closure of those mentioned in the preamble of claim 1 Way of creating inaccuracies or damage to the front inside edge the mouth of a bottle neck not disadvantageous impact and their sealing effect even with frequent Pressure changes are not affected.

Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The object underlying the invention is indicated by the in the characterizing part of claim 1 Doctrine solved.

Der Grundgedanke der erfindungsgemäßen Lehre besteht darin, das öffnen des zwischen dem Verschluß und einem Hals einer Flasche gebildeten Überdruckventils nicht durch eine axiale Bewegung des dichtenden Vorsprungs an dem Dichtteil zu bewirken, bei der die Lage und Beschaffenheit der vorderen Innenkante der Mündung eines Flaschenhalses von entscheidender Bedeutung ist, sondem durch eine radiale Bewegung des dichtenden Vorsprungs nach innen. Diese radiale Bewegung wird dadurch erreicht, daß im Boden unmittelbar radial außerhalb des zylindrischen Dichtteils eine als Drehgelenk wirkende Querschnittsverengung vorgesehen ist. Diese führt dazu, daß bei einer Auswölbung des Bodens des Verschlußteils sich dessen Randbereich im Querschnitt gesehen um das so gebildete Drehgelenk dreht, während der außerhalb liegende Bereich im wesentlichen unbeeinflußt bleibt. Da das zylindrische Dichtteil unmittelbar innen von dem Drehgelenk fest mit dem Boden verbunden und so zwischen Boden und zylindrischem Dichtteil ein Winkelhebel gebildet ist, der um das Drehgelenk drehbar ist, bedeutet dies, daß bei einer Auswölbung des Bodens das Dichtteil nach innen schwenkt und so der an seiner Außenfläche befindliche dichtende Vorsprung druckentlastet wird und bei ausreichendem Druck von der zylindrischen Innenfläche des Flaschenhalses abhebt.The basic idea of the invention The lesson is to open the between the fastener and a neck of a bottle formed relief valve not by an axial movement of the sealing To cause projection on the sealing part the location and nature of the front inner edge the mouth of a bottle neck of crucial Meaning is through a radial movement of the sealing projection inside. This radial movement is achieved in that in the ground immediately radially outside of the cylindrical sealing part a cross-sectional constriction acting as a swivel joint is provided. This leads to the fact that at a Bulging the bottom of the closure part itself Edge area seen in cross section around the thus formed Swivel rotates while the outside one The area remains essentially unaffected. There the cylindrical sealing part immediately inside of the Swivel joint firmly connected to the floor and so between Bottom and cylindrical sealing part an angle lever is formed, which is rotatable about the hinge means this is that with a bulging of the floor Sealing part swings inwards and so on its outer surface located sealing projection relieved of pressure and with sufficient pressure from the cylindrical The inner surface of the bottle neck lifts off.

Um dies sicherzustellen ist zwischen dem Boden der Verschlußkappe und dem zylindrischen Dichtteil eine Rippe angeordnet, die den vom Boden und Verschlußteil gebildeten Winkelhebel aussteift. Dadurch wird die Bewegung des Bodens bei einer Auswölbung infolge zunehmenden Druckes in einer verschlossenen Flasche wirksamer auf das zylindrische Dichtteil übertragen und so die Druckentlastung oder ein Anheben des Vorsprunges gewähtleistet, insbesondere gegen den radial nach außen auf das Dichtteil wirkenden Innendruck.
Um die vorteilhafte Wirkung der Rippe zu erreichen, genügt in einfachsten Fällen bereits die Anordnung nur einer Rippe. Natürlich ist es auch möglich, mehrere Rippen vorteilhafterweise mit gleichem Abstand über den Umfang anzuordnen.To ensure this, a rib is arranged between the bottom of the closure cap and the cylindrical sealing part, which stiffens the angle lever formed by the bottom and the closure part. As a result, the movement of the base is more effectively transmitted to the cylindrical sealing part during a bulge as a result of increasing pressure in a closed bottle, and the pressure relief or lifting of the projection is thus ensured, in particular against the internal pressure acting radially outwards on the sealing part.
In order to achieve the advantageous effect of the rib, the arrangement of only one rib is sufficient in the simplest cases. Of course, it is also possible to advantageously arrange a plurality of ribs at the same distance over the circumference.

Um diese radiale Druckentlastung oder dieses radiale Abheben unter allen Umständen sicherzustellen, ist gemäß einem besonderen Merkmal der Erfindung der radiale dichtende Vorsprung axial so angeordnet, daß er bei allen vorkommenden Auswölbungen des Bodens durch Überdruck im Bereich der im wesentlichen zylindrischen Innenfläche des Halses der Flasche liegt.About this radial pressure relief or this ensure radial take-off under all circumstances is according to a special feature of the invention the radial sealing projection is axially arranged that with all occurring bulges of the Soil due to overpressure in the area of essentially cylindrical inner surface of the neck of the bottle lies.

Diese Angaben sind im wesentlichen auf eine Querschnittsbetrachtung bezogen, bei der das zylindrische Dichtteil tatsächlich einen Hebel bildet. In Wirklichkeit handelt es sich jedoch tatsächlich um einen Zylinder, so daß die im Querschnitt betrachtete Hebelwirkung bezüglich des Umfangs in Wirklichkeit eine Querschnittsverengung des zylindrischen Dichtteils bedeutet. Das ändert aber nichts an der Wirkung in Form einer Druckentlastung oder eines Abhebens des Vorsprungs. Natürlich gehen in die mechanischen Verhältnisse auch die Länge und Steifigkeit des zylindrischen Dichtteils ein, jedoch sind das Werte, deren Bestimmung im Rahmen einfachen fachmännischen Könnens liegt. Das gilt auch für die Ausbildung der ein Drehgelenk darstellenden Querschnittsverengung im Boden des kappenförmigen Verschlußteils. Die Querschnittsverengung muß in Axialrichtung ausreichend groß sein, um die gewünschte leichte Drehbarkeit zu erzielen. Andererseits darf sie in radialer Richtung nicht so groß sein, daß eine unerwünschte Parallelbewegung in Axialrichtung entstehen kann.This information is essentially based on one Cross-sectional consideration, in which the cylindrical Sealing part actually forms a lever. In reality it’s actually a cylinder, so that the leverage considered in cross section a narrowing of the cross-section in terms of scope of the cylindrical sealing part means. But that does not change the effect in the form of a Relieving pressure or lifting the tab. Of course, the mechanical conditions go too the length and rigidity of the cylindrical sealing part one, however, these are values, their determination within the framework simple professional skill. That applies also for the formation of a swivel joint Cross-sectional narrowing in the bottom of the cap-shaped Closure part. The cross-sectional narrowing must be sufficiently large in the axial direction to achieve the desired to achieve easy rotatability. on the other hand it may not be so large in the radial direction that a undesirable parallel movement in the axial direction arise can.

Gemäß einer Weiterbildung der Erfindung weist das Verschlußteil radial außerhalb der als Drehgelenkwirkenden Querschnittsverengung einen axialen Anschlag zur Anlage an einem gegenüberliegenden Gegenanschlag am Hals der Flasche auf. Zweckmäßigerweise ist dabei der Anschlag im radialen Bereich der die Gegenanschlagfläche bildenden Stimfläche eines Flaschenhalses angeordnet. Der Anschlag kann beispielsweise einfach durch den verlängert gedachten Boden gebildet sein, der gegen die Stirnfläche eines Flaschenhalses anschlägt und so eine feste Lage des Verschlußbodens im äußeren Randbereich bewirkt, wodurch Bewegungen des Drehgelenks in Axialrichtung und damit auch Axialbewegungen der am Vorsprung des Dichtteils gebildeten Dichtfläche ausgeschlossen sind und damit auch eine Reibung der Dichtfläche an der zylindrischen Innenfläche des Flaschenhalses. Damit können Abrieb und Beschädigungen dieser Dichtfläche bei durch Druckschwankungen bewirkten Wölbungsänderungen des Bodens des Verschlußteils nicht auftreten.According to a development of the invention has the closure member radially outside of acting as a hinge Cross-sectional narrowing an axial Stop to contact an opposite one Counter stop on the neck of the bottle. Conveniently, is the stop in the radial area of the the counter face forming a face Bottle neck arranged. The stop can, for example simply by the extended thought Soil be formed against the end face of a Bottleneck strikes and so a firm position of the Closure bottom causes in the outer edge area, whereby Movements of the swivel in the axial direction and thus also axial movements of the projection of the sealing surface formed are excluded and thus also a friction of the sealing surface on the cylindrical Inner surface of the bottle neck. In order to can wear and damage this sealing surface in the case of changes in curvature caused by pressure fluctuations the bottom of the closure part do not occur.

Selbstverständlich muß der axiale Anschlag am Verschlußteil so ausgebildet sein, daß Überdruck durch den Anschlag hindurch entweichen kann. Ist der Anschlag ringförmig, so kann dieses Entweichen durch radiale Kanäle oder Durchlässe sichergestellt werden. Bei dem Anschlag kann es sich jedoch auch um diskrete Einzelanschläge handeln, die über den Umfang des Verschlußteils verteilt angeordnet sind und so zwischen sich Durchlässe bilden. Auch kann der Anschlag so ausgebildet sein, daß er an einem Vorsprung außen am Flaschenhals anschlägt, der dann den Gegenanschlag bildet.Of course, the axial stop be designed on the closure part so that overpressure can escape through the stop. Is the Stop ring-shaped, this can escape through radial channels or passages can be ensured. However, the attack can also be discrete Act individual stops that span the scope of the Closure part are arranged distributed and so between culverts are formed. The stop can also be designed in this way be on a ledge on the outside of the bottle neck strikes, which then forms the counterstop.

Gemäß einer zweckmäßigen Weiterbildung erstreckt sich die Rippe im Bereich ihres Überganges zu dem Dichtteil axial bis in einen Bereich entfernt von dem dichtenden Vorsprung. Dadurch verbleibt axial zwischen der Rippe und dem Vorsprung ein unausgesteifter und damit elastischer Bereich.According to a practical training the rib extends in the area their transition to the sealing part axially into one Area away from the sealing tab. This remains axially between the rib and the Head start an unstiffened and therefore elastic Area.

Gemäß einer anderen Weiterbildung erstreckt sich die Rippe im Bereich ihres Überganges in den Boden bis in einen Bereich radial entfernt von der Achse bzw. dem Zentrum des Verschlußteils. Dadurch wird einer Beeinträchtigung der Auswölbung des Bodens bei zunehmendem Druck entgegengewirkt und somit die Wirkung als Überdruckventil verbessert.According to another training the rib extends in the area of her Transition into the ground up to a radial area away from the axis or the center of the closure part. This will affect the Arching of the floor counteracted with increasing pressure and thus the effect as a pressure relief valve improved.

Schließlich ist gemäß einer zweckmäßigen Weiterbildung der Erfindung die Querschnittsverengung radial so angeordnet, daß das durch sie gebildete Drehgelenk auf der verlängert gedachten Innenfläche des Halses einer Flasche liegt. Durch diese Lage der Verengung und damit des Drehgelenks ist sichergestellt, daß der an der Innenwandung eines Flaschenhalses anliegende radiale dichtende Vorsprung bei Auswölbungen des Bodens der Verschlußkappe immer nur quer zur inneren Mantelfläche des Flaschenhalses druckentlastet bzw. abgehoben wird. Damit wird Reibbewegungen des dichtenden Vorsprunges in Axialrichtung entlang der inneren Mantelfläche des Flaschenhalses entgegengewirkt und damit auch einem Verschleiß und Undichtwerden.Finally, according to an expedient Further development of the invention, the cross-sectional narrowing arranged radially so that the formed by them Swivel on the extended inner surface the neck of a bottle. Due to this location the Narrowing and thus the swivel joint is ensured that the on the inner wall of a bottle neck Radial sealing protrusion against bulges the bottom of the cap only ever transverse to the inner surface of the bottle neck is relieved of pressure or lifted off. This will make rubbing movements of the sealing projection in the axial direction along the inner surface of the bottle neck counteracted and thus also wear and leaking.

Anhand der Zeichnung soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden.Based on the drawing, the invention is intended to Embodiment will be explained in more detail.

Die Zeichnung zeigt im Schnitt und teilweise weggeschnitten ein als Schraubkappe ausgebildetes Verschlußteil 1, aufgeschraubt auf einen nur mit seinem vorderen Teil dargestellten Hals 2 einer Flasche. Das Verschlußteil 1 weist einen Boden 3 auf, von dem aus sich axial in das Innere des Halses 2 ein zylindrisches Dichtteil 4 erstreckt, das auf seiner Außenseite einen Vorsprung 5 aufweist, der an einer zylindrischen Innenfläche 6 des Halses 2 anliegt. Der äußere Durchmesser des Vorsprunges 5 ist geringfügig größer als der Durchmesser der Innenfläche 6 bemessen, derart, daß der Vorsprung 5 im dargestellten aufgeschraubten Zustand mit einer vorbestimmten Kraft an der Innenfläche 6 anliegt. Der Vorsprung 5 kommt also nicht mit einer vorderen Innenkante 7 der Mündung des Halses 2 in Kontakt.The drawing shows in section and partially cut away a screw cap Closure part 1, screwed onto one only with his front part shown neck 2 of a bottle. The Closure part 1 has a bottom 3, from which axially into the interior of the neck 2 a cylindrical Sealing part 4 extends one on the outside Has projection 5 on a cylindrical inner surface 6 of the neck 2 abuts. The outer diameter the projection 5 is slightly larger than the diameter the inner surface 6 dimensioned such that the Projection 5 in the screwed-on state shown with a predetermined force on the inner surface 6. The projection 5 does not come with a front Inner edge 7 of the mouth of the neck 2 in contact.

Der Boden 3 weist unmittelbar radial außerhalb des Dichtteils 4 eine Querschnittsverengung 8 auf, die ein Drehgelenk bildet, um den der Winkelhebel drehbar ist, der durch das Dichtteil 4 und den sich von der Querschnittsverengung 8 radial nach innen erstreckenden Teil des Bodens 3 gebildet ist.The bottom 3 points directly radially outside the sealing part 4 has a cross-sectional constriction 8, which forms a swivel around which the angle lever is rotatable is that by the sealing part 4 and the Cross-sectional constriction 8 extending radially inwards Part of the bottom 3 is formed.

Ein äußeres zylindrisches Halteteil 12 des Verschlußteils 1 weist auf seiner Innenseite ein Innengewinde 13 auf, das in ein Außengewinde 14 am Hals 2 der Flasche eingreift. Außerdem befindet sich innen an dem Halteteil 12 eine Axialrippe 9 mit einem Anschlag 10, der an einem Gegenanschlag 11 anliegt, der an der Stirnfläche des Halses 2 der Flasche gebildet ist. Anschlag 10 und Gegenanschlag 11 bestimmen also eine genaue und insbesondere feste Lage des durch die Querschnittsverengung 8 gebildeten Drehgelenks.An outer cylindrical holding part 12 of the closure part 1 has an internal thread on its inside 13, which is in an external thread 14 on the neck 2 the bottle intervenes. Also located on the inside the holding part 12 has an axial rib 9 with a stop 10, which bears against a counter-stop 11, the End face of the neck 2 of the bottle is formed. attack 10 and counter stop 11 thus determine one exact and in particular fixed position of the by the Cross-sectional constriction 8 formed hinge.

In dem Bereich des Winkels zwischen dem Boden 3 und dem Dichtteil 4 ist eine Rippe 15 angeordnet, die fest mit dem Boden 3 und dem Dichtteil 4 verbunden ist und mit diesen aus einem Stück besteht. Die Rippe 15 ist dreieckförmig ausgebildet und erstreckt sich in radialer Richtung bis in einen Bereich entfernt von dem dichtenden Vorsprung 5, endet jedoch in einem rad-ialen Bereich entfernt von einer Achse 16. Durch diese geringe radiale Ausdehnung nach innen wird die Aussteifung_des Bodens 3 in Bezug auf Wölbungen gering gehalten.In the range of the angle between the floor 3 and the sealing part 4, a rib 15 is arranged, which are firmly connected to the bottom 3 and the sealing part 4 is and consists of one piece with these. The rib 15 is triangular and extends radially Direction to an area away from that sealing projection 5, but ends in a radial ial Area away from an axis 16. Through this the radial inward expansion becomes small Stiffening of the bottom 3 in terms of curvatures is low held.

Bei Gebrauch wird nach einer Befüllung der zu dem Hals 2 gehörenden Flasche das kappenförmige Verschlußteil 1 auf den Hals 2 aufgeschraubt, bis der Anschlag 10 an dem Gegenanschlag 11 zur Anlage kommt. Dabei gleitet der Vorsprung 5 an dem Dichtteil 4 auf die Innenfläche 6 des Halses 2 auf und dichtet so das Innere der Flasche ab. Entwickelt sich in der Flasche ein Überdruck, beispielsweise dadurch, daß es sich bei dem Füllgut um ein Gasdruck entwickelndes Getränk handelt, so wölbt sich der Boden 3 axial nach außen, wodurch seine Ränder eine Drehung um die ein Drehgelenk darstellende Querschnittsverengung 8 ausführen. Dies führt zu einem Verschwenken des durch das Dichtteil 4 gebildeten Armes radial nach innen und damit zu einer Verringerung der Kraft, mit der der Vorsprung 5 an der Innenfläche 6 des Halses 2 anliegt. Bei einem vorbestimmten Überdruck und damit zu einer vorbestimmten Auswölbung des Bodens 3 hebt der Vorsprung 5 von der Innenfläche 6 ab, so daß Überdruck entweichen kann. Als Folge davon verringert sich wieder die Wölbung des Bodens 3, so daß der Vorsprung 5 wieder dicht an der Innenfläche 6 zur Anlage kommt. Durch die Rippe 15 wird die Übertragung der Auslenkung des Bodens 3 aufgrund von Auswölbungen bei Überdruck auf das Dichtteil 4 verbessert, der von Boden 3 und Dichtteil 4 gebildete Winkelhebel wird ausgesteift. Dadurch reagiert das insgesamt gebildete Überdruckventil empfindlicher und exakter auf Überdrücke. Insbesondere läßt sich dadurch auch bei unterschiedlichen Fertigungstoleranzen ein bestimmter Abblasdruck genauer einhalten.In use, after filling, the the neck-shaped bottle the cap-shaped Closure part 1 screwed onto the neck 2 until the Stop 10 on the counter stop 11 to the system comes. The projection 5 slides on the sealing part 4 on the inner surface 6 of the neck 2 and so seals the inside of the bottle. Develops in the bottle an overpressure, for example in that it the gas is developing around a gas pressure Beverage acts, the bottom 3 bulges axially outside, causing its edges to rotate around the one Execute cross-sectional constriction 8 which represents the swivel joint. This leads to a pivoting of the the sealing part 4 formed arm radially inwards and thereby reducing the force with which the lead 5 rests on the inner surface 6 of the neck 2. at a predetermined pressure and thus to a predetermined bulge of the bottom 3 lifts the projection 5 from the inner surface 6, so that overpressure can escape. As a result, it decreases again the curvature of the bottom 3 so that the projection 5 comes close to the inner surface 6 again. Through the rib 15, the transmission of the deflection of the bottom 3 due to bulges Overpressure on the sealing part 4 improved from the bottom 3 and sealing part 4 formed angle lever is stiffened. As a result, the pressure relief valve formed as a whole reacts more sensitive and more precise to overpressures. In particular can thus also with different Manufacturing tolerances more precisely a certain blow-off pressure comply.

Da durch Anschlag 10 und Gegenanschlag 11 die Lage des durch die Querschnittsverengung 8 gebildeten Gelenks axial praktisch unveränderbar ist, sind Axialbewegungen des Dichtteils 4 ausgeschlossen, so daß auch keine Relativbewegungen zwischen dem an dem Dichtteil 4 befindlichen Vorsprung 5 und der Innenfläche 6 des Halses 2 auftreten können. Die Dichtwirkung wird daher nicht beeinträchtigt, auch wenn durch häufige Druckwechsel Änderungen der Auswölbung des Bodens 3 erfolgen. Diese führen nur zu Änderungen des Auflagedruckes des Vorsprungs 5, die sich jedoch nicht negativ auf die Dichtung auswirken.As by stop 10 and counter-stop 11 the position of the formed by the cross-sectional constriction 8 Joint is practically unchangeable axially Axial movements of the sealing part 4 excluded, see above that also no relative movements between the the sealing part 4 located projection 5 and the inner surface 6 of the neck 2 can occur. The sealing effect is therefore not affected, even if by frequent changes in pressure changes in bulge of the bottom 3. These only lead to changes the contact pressure of the projection 5, which however do not adversely affect the seal.

Claims (7)

  1. A locking device for a bottle or the like,
    having a cap-like locking part (1),
    having a projection directed inwards from the edge of the cap-like part for backwardly engaging with an outwardly directed projection on the neck (2) of a bottle or the like,
    having an essentially cylindrical sealing part (4) inside the locking part, extending axially from the base (3) of which, and
    having a radial projection (5) which is constructed spaced from the base of the locking part on the outer side of the sealing part, and having a diameter which is greater than the inner diameter of the neck (2) of a bottle to be locked with the locking device, such that the sealing surface or sealing edge formed from the projection, abuts tightly with inner surface (6) of the neck,
    the base (3) has a narrowing of the cross-section (8) acting as a swivel joint, directly radially outside cylindrical sealing part (4)
       characterised in that
    at least one rib (15) is arranged in the angle between the base (3) and sealing part (4) for stiffening the angle lever constructed through same and
    radial projection (5) is axially so-arranged that it is located during all arching of the base resulting from excess pressure in the area of inner surface (6) of bottle neck (2), and during arching of the base (3) as a result of lever action of angle lever formed from the base (3) and sealing part (4), rotatable about the swivel joint and stiffened by rib (15), is essentially radially lifted or released from pressure from the inner surface (6) of bottle neck (2).
  2. A locking device according to claim 1, characterised in that sealing part (4) has an axial stop (10) radially outside the narrowing of cross-section (8) acting as a swivel joint, for resting on an opposingly-located counter stop (11) on the bottle neck (2).
  3. A locking device according to claim 2, characterised in that stop (10) is arranged in the radial area of the end surface of a bottle neck (2) forming the counter stop (11).
  4. A locking device according to claim 1, characterised in that rib (15) extends axially in the area of its cross-over to the cylindrical sealing part (4) as far as an area spaced from radial projection (5) on sealing part (4).
  5. A locking device according to claim 1, characterised in that rib (15) is radially spaced from axis (16) of locking part (1) in the area of its cross-over to the base (3).
  6. A locking device according to claim 1, characterised in that rib (15) is triangular.
  7. A locking device according to claim 1, characterised in that the narrowing of cross-section (8) is radially so-arranged that the swivel joint constructed by same is located on the extended inner surface(6) of bottle neck (2).
EP96937235A 1995-10-31 1996-10-25 Closure for a bottle or the like Expired - Lifetime EP0858416B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19540560 1995-10-31
DE19540560 1995-10-31
DE19613830 1996-04-06
DE19613830A DE19613830C2 (en) 1995-10-31 1996-04-06 Closure for a bottle or the like
PCT/EP1996/004646 WO1997016356A1 (en) 1995-10-31 1996-10-25 Closure for a bottle or the like

Publications (3)

Publication Number Publication Date
EP0858416A1 EP0858416A1 (en) 1998-08-19
EP0858416B1 EP0858416B1 (en) 1999-08-04
EP0858416B2 true EP0858416B2 (en) 2003-04-09

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Application Number Title Priority Date Filing Date
EP96937235A Expired - Lifetime EP0858416B2 (en) 1995-10-31 1996-10-25 Closure for a bottle or the like

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US (1) US6021912A (en)
EP (1) EP0858416B2 (en)
JP (1) JP3712419B2 (en)
CN (1) CN1076304C (en)
AT (1) ATE182853T1 (en)
AU (1) AU708953B2 (en)
BR (1) BR9611204A (en)
CA (1) CA2235743A1 (en)
CZ (1) CZ290059B6 (en)
DE (2) DE29623290U1 (en)
DK (1) DK0858416T4 (en)
ES (1) ES2137019T5 (en)
GR (1) GR3031694T3 (en)
HK (1) HK1016141A1 (en)
HU (1) HU225530B1 (en)
NO (1) NO324160B1 (en)
PL (1) PL185699B1 (en)
TR (1) TR199800758T2 (en)
WO (1) WO1997016356A1 (en)

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Publication number Publication date
ES2137019T3 (en) 1999-12-01
CZ290059B6 (en) 2002-05-15
DE29623290U1 (en) 1998-02-19
HU225530B1 (en) 2007-01-29
EP0858416B1 (en) 1999-08-04
NO981960L (en) 1998-04-30
GR3031694T3 (en) 2000-02-29
CN1201429A (en) 1998-12-09
HUP9900731A3 (en) 2000-06-28
DK0858416T3 (en) 2000-03-06
CZ130798A3 (en) 1999-06-16
ES2137019T5 (en) 2003-12-16
NO981960D0 (en) 1998-04-30
AU708953B2 (en) 1999-08-19
EP0858416A1 (en) 1998-08-19
MX9803279A (en) 1998-09-30
AU7492196A (en) 1997-05-22
TR199800758T2 (en) 1998-07-21
DE59602656D1 (en) 1999-09-09
CA2235743A1 (en) 1997-05-09
JPH11514614A (en) 1999-12-14
PL327989A1 (en) 1999-01-04
HK1016141A1 (en) 1999-10-29
NO324160B1 (en) 2007-09-03
WO1997016356A1 (en) 1997-05-09
ATE182853T1 (en) 1999-08-15
PL185699B1 (en) 2003-07-31
DK0858416T4 (en) 2003-07-28
JP3712419B2 (en) 2005-11-02
BR9611204A (en) 1999-04-06
CN1076304C (en) 2001-12-19
HUP9900731A2 (en) 1999-06-28
US6021912A (en) 2000-02-08

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