EP0025966A1 - Childproof closure - Google Patents

Childproof closure Download PDF

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Publication number
EP0025966A1
EP0025966A1 EP19800105537 EP80105537A EP0025966A1 EP 0025966 A1 EP0025966 A1 EP 0025966A1 EP 19800105537 EP19800105537 EP 19800105537 EP 80105537 A EP80105537 A EP 80105537A EP 0025966 A1 EP0025966 A1 EP 0025966A1
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EP
European Patent Office
Prior art keywords
ring
locking ring
locking
outer ring
child safety
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Granted
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EP19800105537
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German (de)
French (fr)
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EP0025966B1 (en
Inventor
Hans Heinlein
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Individual
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Individual
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Publication of EP0025966A1 publication Critical patent/EP0025966A1/en
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    • 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
    • B65D50/00—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures
    • B65D50/02—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions
    • B65D50/04—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one
    • B65D50/045—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring
    • B65D50/046—Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of simultaneous actions, e.g. depressing and turning, lifting and turning, maintaining a part and turning another one where one action elastically deforms or deflects at least part of the closure, the container or an intermediate element, e.g. a ring and such deformation causes the disengagement of locking means, e.g. the release of a pawl-like element from a tooth or abutment, to allow removal of the closure by simultaneous rotation

Definitions

  • the invention relates to a child safety closure made of plastic, for containers with a neck and screw thread, in the form of a screw cap, with a locking ring overlapping a transfer ring on the container neck, by means of whose elastic deformation the closure can be unscrewed.
  • a safety ring is provided with at least one locking lug arranged on the safety ring, which interacts with at least one triangular holding lug arranged on the container neck (DE-OS 24 49 134).
  • the locking ring which is firmly connected to the screw cap must be deformed at certain points in order to open the lock in order to overcome the locking effect of a locking cam which interacts with a retaining cam.
  • the opening process in this known closure thus requires, on the one hand, precise knowledge of the closure in order to use the force, which is quite considerable, on the other hand, for sufficient deformation at the appropriate points.
  • Child safety locks are also known, in which two caps are coaxially inserted into one another and these two caps have latching cams and pawls on their top or inside. Since both parts are made of plastic, the locking lugs and pawls or similar entrainment and locking elements are deformed or worn to the extent that the function is no longer guaranteed if they are actuated frequently. This wear and deformation stems from the fact that with these closures the force for opening the closure has to be transmitted directly via the locking lugs, cams or the like.
  • the invention is based on the object of designing a child safety lock of the type described at the outset in such a way that it is simple to manufacture is, can be applied mechanically to the associated container, and the force required for opening can be adjusted in a simple manner.
  • the locking ring has an approximately triangular inner locking step and at least one axially parallel slot that the locking ring is surrounded by an outer ring which connects the locking ring via at least two oblique struts is and in the region of an axially parallel slot of the locking ring has a deformable section which, in the event of radial pressure, by enlarging its radius of curvature via the oblique struts adjacent to the axially parallel slot, expands the locking ring while enlarging the axially parallel slot such that the locking ring slides over the transfer ring on the container neck and that Cap, locking ring and outer ring and oblique struts are integrally formed.
  • the child safety lock according to the invention has considerable advantages over the known child safety locks.
  • the one-piece design enables rapid production in injection molding machines without post-processing. Assembly times for related parts, such as those used in known child safety locks, are eliminated.
  • the strength of the locking ring or the pressure force required for screwing or unscrewing the closure can be set in a simple manner by the number of slots in the locking ring.
  • At least one slot is provided in one step between the outer ring and the screw cap in the region of the deformable section. This facilitates the stretching of the deformable portion of the outer ring.
  • a reduction in wall thickness can be provided in the step in the deformable section, such that a relatively thin plastic skin is formed which is elastically deformable.
  • the outer ring has at least one outwardly directed pressure wart in its deformable section.
  • the printing nipple (s) is (are) hollow.
  • the design of the closure is advantageously carried out in such a way that the torque to be applied when the closure is screwed on is always greater than when it is screwed on.
  • the child safety lock according to the invention is, as shown in Fig. 1, integrally formed and has a screw cap part 1 with internal thread 2 and gripping ribs 3.
  • the internal thread 2 cooperates with the external thread on the neck of a (not shown) container.
  • sealing rings 20 and / or an attachment 19 for mounting and for sealing a container insert, such as pouring spout, dropper or the like, can be provided.
  • a locking ring 4 is provided in the lower area, which has a locking step 5 which is approximately triangular in cross section at its lower edge. Due to the inclined inner edge of the locking step 5, when the closure 1 is screwed onto a container, the locking ring 4 is stretched so far when it hits the transfer ring that it can slide over the transfer ring. Due to the shorter flank of the triangular blocking step 5, screwing back and thus unintentional or unauthorized opening of the closure for a child is avoided with certainty.
  • an outer ring 7 is formed on a step 8 according to the invention, so that there is an annular gap between the inner ring 4 and the outer ring 7.
  • the Locking ring 4 has at least one axially parallel slot 6, as can be seen from FIG. 2, by means of which the corresponding expansion of the locking ring 4 is made possible when it grips over the transfer ring both when screwing on and when unscrewing.
  • the outer ring 7 is connected to the locking ring 4 via at least two oblique struts 9, 10 which are arranged on both sides of the axially parallel slot 6. In the area of these axially parallel slots 6, the outer ring 7 has a deformable section 11.
  • nipples 17 and 18 can be provided, which are advantageously hollow, i. H. have essentially the same wall thickness as the other areas of the outer ring 7.
  • oblique struts can be arranged in the annular gap between the locking ring 4 and the outer ring.
  • Fig. 2 four pairs of V-shaped oblique struts 12, 13, 14, 15 are shown.
  • Fig. 1 is particularly clearly seen that the A u- 28ring 7 in the region of its deformable section 11 in step 8 has a slot 16 to facilitate the deformation. Instead of the slot 16, however, a reduction in wall thickness can also be provided, such that there is a thin plastic skin at this point, which is relatively easily deformable.
  • Opening is only possible if in the region of the deformable section 11 of the outer ring 7 inward radial pressure forces are exerted.
  • the deformable section 11 deforms from its approximately circular section shape into an elongated shape which is approximately tangential to the locking ring 4 and thereby pulls the inner locking ring 4 apart by enlarging the oblique struts 9, 10, enlarging the axially parallel slot 6 to such an extent that the locking ring 4 over the transfer ring can slide on the neck of the container.
  • a corresponding note can be attached to the surface of the screw cap 1 that the bead or pressure nipple 17, 18 must be pressed inwards to open it.
  • the design of the locking ring 4 or locking level 5 is made in coordination with the plastic material so that the torque required for screwing on the closure is always greater is than the torque required for screwing.
  • the relation of the two torques can be adjusted in particular by the geometrical design of the blocking stage 5.
  • the invention is not restricted to the exemplary embodiment shown. It also encompasses all professional applications and further training as well as partial and / or sub-combinations of the described and / or illustrated features and measures.

Abstract

1. Child-proof safety lock made of plastics material, for containers having a neck and a screw thread in the form of a screw cap (1), and a locking or stop ring (4) which covers a transfer ring on the container neck and the elastic deformation of which can cause the lock to be unscrewed, characterised in that the locking ring (4) has an inner locking step or shoulder (5), which is approximately triangular in cross-section, and at least one axially parallel slot (6), that the locking ring (4) is surrounded by an outer ring (7) which is connected to the locking ring (4) via at least two diagonal braces (9, 10) and, in the area of the or an axially parallel slot (6) of the locking ring (4), has a deformable section (11) which, when subjected to radial pressure as a result of an increase in its radius of curvature via the diagonal braces (9, 10) adjacent to the axially parallel slot (6), causes the locking ring (4) to expand during enlargement of the axially parallel slot (6) in such a manner that the locking ring (4) can slide over the transfer ring on the container neck, and that the cap (1), locking ring (4), outer ring (7) and diagonal braces (9, 10) are designed in one piece.

Description

Die Erfindung betrifft einen Kindersicherheitsverschluß aus Kunststoff, für Behälter mit Hals und Schraubgewinde, in Form einer Schraubkappe, mit einem einen Transferring am Behälterhals übergreifenden Sperring, durch dessen elastische Deformation der Verschluß abschraubbar ist.The invention relates to a child safety closure made of plastic, for containers with a neck and screw thread, in the form of a screw cap, with a locking ring overlapping a transfer ring on the container neck, by means of whose elastic deformation the closure can be unscrewed.

Für die Aufbewahrung von hochwirksamen und/oder z. B. in Uberdosis giftigen oder schädlichen Stoffen, insbesondere Arzneimitteln, wird verlangt, daß ein öffnen des entsprechenden Behälters durch Kinder unmöglich gemacht ist.For the storage of highly effective and / or z. B. in overdose of toxic or harmful substances, especially drugs, it is required that an opening of the corresponding container is made impossible by children.

Dabei sind unter Kinder insbesondere Kleinkinder zu verstehen, die noch nicht in der Lage sind, entsprechende Aufschriften oder Warnungen auf dem Behälter zu lesen. Neben dem eingangs erwähnten Kindersicherheitsverschluß sind noch eine Reihe weiterer Verschlüsse bekannt, die jedoch entweder schwierig herzustellen, aufwendig zu montieren oder selbst durch Erwachsene, beispielsweise ältere oder durch Krankheit geschwächte Menschen,schwer zu bedienen sind.Children are to be understood in particular as small children who are not yet able to read the appropriate labels or warnings on the container. In addition to the child safety lock mentioned at the outset, a number of further locks are known, but these are either difficult to manufacture, complex to assemble, or even adult, for example older or weakened by illness People who are difficult to use.

Es sind bereits eine große Anzahl von Kindersicherheitsverschlüssen bekannt, die jedoch den Erfordernissen der Praxis nicht gerecht werden. Bei einem bekannten Kindersicherheitsverschluß ist ein Sicherheitsring vorgesehen, mit mindestens einer am Sicherheitsring angeordneten Sperrnase, die mit mindestens einer am Behälterhals angeordneten dreieckförmigen Haltenase zusammenwirkt (DE-OS 24 49 134). Bei diesem bekannten Kindersicherheitsverschluß muß zum öffnen des Verschlusses der mit der Schraubkappe fest verbundene Sperring an bestimmten Stellen deformiert werden, um die Sperrwirkung einer mit einer Haltenocke zusammenwirkenden Sperrnocke zu überwinden. Der öffnungsvorgang bei diesem bekannten Verschluß erfordert somit einerseits genaue Kenntnisse des Verschlusses, um an den geeigneten Stellen die andererseits recht erhebliche Kraft zur ausreichenden Deformation anzuwenden.A large number of child safety locks are already known, but they do not meet practical requirements. In a known child safety lock, a safety ring is provided with at least one locking lug arranged on the safety ring, which interacts with at least one triangular holding lug arranged on the container neck (DE-OS 24 49 134). In this known child safety lock, the locking ring which is firmly connected to the screw cap must be deformed at certain points in order to open the lock in order to overcome the locking effect of a locking cam which interacts with a retaining cam. The opening process in this known closure thus requires, on the one hand, precise knowledge of the closure in order to use the force, which is quite considerable, on the other hand, for sufficient deformation at the appropriate points.

Es sind ferner Kindersicherheitsverschlüsse bekannt, bei denen zwei Kappen koaxial ineinanderstecken und diese beiden Kappen an ihrer Oberseite bzw. Innenseite Rastnocken und Sperrklinken aufweisen. Da beide Teile aus Kunststoff bestehen, werden bei oftmaliger Betätigung die Sperrnasen und Klinken oder ähnliche Mitnahme- und Sperrelemente deformiert bzw. soweit abgenutzt, daß die Funktion nicht mehr gewährleistet ist. Diese Abnutzung und.Deformation rührt von der Tatsache her, daß bei diesen Verschlüssen die Kraft zum öffnen des Verschlusses über die Sperrnasen, Nocken oder dergleichen direkt übertragen werden muß.Child safety locks are also known, in which two caps are coaxially inserted into one another and these two caps have latching cams and pawls on their top or inside. Since both parts are made of plastic, the locking lugs and pawls or similar entrainment and locking elements are deformed or worn to the extent that the function is no longer guaranteed if they are actuated frequently. This wear and deformation stems from the fact that with these closures the force for opening the closure has to be transmitted directly via the locking lugs, cams or the like.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, einen Kindersicherheitsverschluß der eingangs erläuterten Art derart auszubilden, daß er einfach herzustellen ist, maschinell auf zugehörige Behälter aufgebracht werden kann, und wobei die zum öffnen erforderliche Kraft in einfacher Weise eingestellt werden kann.In contrast, the invention is based on the object of designing a child safety lock of the type described at the outset in such a way that it is simple to manufacture is, can be applied mechanically to the associated container, and the force required for opening can be adjusted in a simple manner.

Diese Aufgabe wird nach der Erfindung bei einem Kindersicherheitsverschluß der eingangs erläuterten Art im wesentlichen dadurch gelöst, daß der Sperring eine etwa dreieckförmige innere Sperrstufe und mindestens einen achsparellelen Schlitz aufweist, daß der Sperrring von einem Außenring umgeben ist, der dem Sperrring über mindestens zwei Schrägstreben verbunden ist und im Bereich eines achsparallelen Schlitzes des Sperringes einen deformierbaren Abschnitt aufweist, der bei radialem Druck durch Vergrößerung seines Krümmungsradiuses über die dem achsparallelen Schlitz benachbarten Schrägstreben den Sperring unter Vergrößerung des achsparallelen Schlitzes derart aufweitet, daß der Sperring über den Transferring am Behälterhals gleitet und daß Kappe, Sperring und Außenring sowie Schrägstreben einstückig ausgebildet sind.This object is achieved according to the invention in a child safety lock of the type mentioned essentially in that the locking ring has an approximately triangular inner locking step and at least one axially parallel slot that the locking ring is surrounded by an outer ring which connects the locking ring via at least two oblique struts is and in the region of an axially parallel slot of the locking ring has a deformable section which, in the event of radial pressure, by enlarging its radius of curvature via the oblique struts adjacent to the axially parallel slot, expands the locking ring while enlarging the axially parallel slot such that the locking ring slides over the transfer ring on the container neck and that Cap, locking ring and outer ring and oblique struts are integrally formed.

Der erfindungsgemäße Kindersicherheitsverschluß weist gegenüber den bekannten Kindersicherheitsverschlüssen erhebliche Vorteile auf. Durch die einstückige Ausbildung ist eine schnelle Herstellung in Spritzgußmaschinen ohne Nachbearbeitung ermöglicht. Montagezeiten für zusammengehörige Teile, wie sie bei bekannten Kindersicherheitsverschlüssen Verwendung finden, entfallen. Durch die Anzahl der Schlitze im Sperring kann die Festigkeit des Sperringes beziehungsweise die zum Aufschrauben beziehungsweise Abschrauben des Verschlusses erforderliche Druckkraft in einfacher Weise eingestellt werden.The child safety lock according to the invention has considerable advantages over the known child safety locks. The one-piece design enables rapid production in injection molding machines without post-processing. Assembly times for related parts, such as those used in known child safety locks, are eliminated. The strength of the locking ring or the pressure force required for screwing or unscrewing the closure can be set in a simple manner by the number of slots in the locking ring.

Zur Anpassung der erforderlichen Druckkräfte für das Auf- bzw. Abschrauben ist es nach einer Weiterbildung der Erfindung vorteilhaft, daß zwischen Sperring und Außenring mehrere Paare V-förmig angeordneter Schrägstreben vorgesehen sind.To adapt the pressure forces required for screwing on or unscrewing, it is advantageous according to a further development of the invention that several pairs of V-shaped oblique struts are provided between the locking ring and the outer ring.

Bei einem bevorzugten Ausführungsbeispiel der Erfindung ist zwischen Außenring und Schraubkappe im Bereich des deformierbaren Abschnittes in einer Stufe mindestens ein Schlitz vorgesehen. Dadurch wird die Streckung des deformierbaren Abschnittes des Außenringes erleichtert.In a preferred embodiment of the invention, at least one slot is provided in one step between the outer ring and the screw cap in the region of the deformable section. This facilitates the stretching of the deformable portion of the outer ring.

Nach einem abgewandelten Ausführungsbeispiel kann in der Stufe im deformierbaren Abschnitt eine Wandstärkenverringerung vorgesehen sein, derart, daß sich eine relativ dünne Kunststoffhaut bildet, die elastisch deformierbar ist.According to a modified embodiment, a reduction in wall thickness can be provided in the step in the deformable section, such that a relatively thin plastic skin is formed which is elastically deformable.

In zweckmäßiger Ausgestaltung der Erfindung weist der Außenring in seinem deformierbaren Abschnitt mindestens eine nach außen gerichtete Druckwarze auf.In an expedient embodiment of the invention, the outer ring has at least one outwardly directed pressure wart in its deformable section.

Fertigungstechnisch vorteilhaft ist es, wenn die Druckwarze(n) hohl ausgebildet ist (sind).It is advantageous from a manufacturing point of view if the printing nipple (s) is (are) hollow.

Die Ausbildung des Verschlusses wird in vorteilhafter Weise derart vorgenommen, daß das aufzubringende Drehmoment beim Aufschrauben des Verschlusses stets größer ist als beim Zuschrauben.The design of the closure is advantageously carried out in such a way that the torque to be applied when the closure is screwed on is always greater than when it is screwed on.

Weitere Einzelheiten und Vorteile der Erfindung werden anhand der Zeichnung näher erläutert, die schematisch ein Ausführungsbeispiel darstellt. Dabei zeigt:

  • Fig. 1 einen Querschnitt eines erfindungsgemäßen Kindersicherheitsverschlusses, gemäß der Linie I-I in Fig. 2,
  • Fig. 2 eine Ansicht in Pfeilrichtung A der Fig. 1 und
  • Fig. 3 eine Draufsicht auf einen Verschluß nach der Erfindung.
Further details and advantages of the invention are explained in more detail with reference to the drawing, which schematically represents an embodiment. It shows:
  • 1 shows a cross section of a child safety lock according to the invention, along the line II in FIG. 2,
  • Fig. 2 is a view in the direction of arrow A of Fig. 1 and
  • Fig. 3 is a plan view of a closure according to the invention.

Der Kindersicherheitsverschluß gemäß der Erfindung ist, wie aus Fig. 1 ersichtlich, einstückig ausgebildet und weist einen Schraubkappenteil 1 auf mit Innengewinde 2 und Greifrippen 3. Das Innengewinde 2 wirkt mit dem,Außengewinde am Hals eines (nicht dargestellten) Behälters zusammen. An der inneren Oberfläche der Schraubkappe 1 können Dichtringe 20 und/oder ein Ansatz 19 zur Montage und zur Abdichtung eines Behältereinsatzes, wie beispielsweise Ausgießer, Tropfer oder dergl. vorgesehen sein.The child safety lock according to the invention is, as shown in Fig. 1, integrally formed and has a screw cap part 1 with internal thread 2 and gripping ribs 3. The internal thread 2 cooperates with the external thread on the neck of a (not shown) container. On the inner surface of the screw cap 1, sealing rings 20 and / or an attachment 19 for mounting and for sealing a container insert, such as pouring spout, dropper or the like, can be provided.

Im unteren Bereich ist ein Sperring 4 vorgesehen, der an seinem unteren Rand eine im Querschnitt etwa dreieckförmige Sperrstufe 5 aufweist. Durch die schräge innere Kante der Sperrstufe 5 wird beim Aufschrauben des Verschlusses 1 auf einen Behälter der Sperring 4 beim Auftreffen auf den Transferring soweit gedehnt, daß er über den Transferring gleiten kann. Durch die kürzere Flanke der dreieckförmigen Sperrstufe 5 wird ein Zurückschrauben und somit ein unbeabsichtigtes oder unerlaubtes öffnen des Verschlusses für ein Kind mit Sicherheit vermieden.A locking ring 4 is provided in the lower area, which has a locking step 5 which is approximately triangular in cross section at its lower edge. Due to the inclined inner edge of the locking step 5, when the closure 1 is screwed onto a container, the locking ring 4 is stretched so far when it hits the transfer ring that it can slide over the transfer ring. Due to the shorter flank of the triangular blocking step 5, screwing back and thus unintentional or unauthorized opening of the closure for a child is avoided with certainty.

Um das öffnen des Verschlusses durch einen Erwachsenen zu ermöglichen, ist nach der Erfindung über eine Stufe 8 ein Außenring 7 angeformt, so daß sich zwischen Innenring 4 und Außenring 7 ein Ringspalt ergibt. Der Sperring 4 weist mindestens einen achsparallelen Schlitz 6 auf, wie aus Fig. 2 ersichtlich, durch den die entsprechende Dehnung des Sperringes 4 beim übergreifen über den Transferring sowohl beim Aufschrauben, als auch beim Abschrauben ermöglicht wird.In order to enable the closure to be opened by an adult, an outer ring 7 is formed on a step 8 according to the invention, so that there is an annular gap between the inner ring 4 and the outer ring 7. The Locking ring 4 has at least one axially parallel slot 6, as can be seen from FIG. 2, by means of which the corresponding expansion of the locking ring 4 is made possible when it grips over the transfer ring both when screwing on and when unscrewing.

Der Außenring 7 ist mit dem Sperring 4 über mindestens zwei Schrägstreben 9, 10 verbunden, die beidseitig des achsparallelen Schlitzes 6 angeordnet sind. Im Bereich dieser achsparallelen Schlitze 6 weist der Außenring 7 einen deformierbaren Abschnitt 11 auf.The outer ring 7 is connected to the locking ring 4 via at least two oblique struts 9, 10 which are arranged on both sides of the axially parallel slot 6. In the area of these axially parallel slots 6, the outer ring 7 has a deformable section 11.

Aus Fig. 2 ist ersichtlich, daß im Bereich des deformierbaren Abschnittes 11 des Außenringes 7 Druckwarzen 17 bzw. 18 vorgesehen sein können, die vorteilhafterweise hohl ausgebildet sind, d. h. im wesentlichen diesselbe Wandstärke aufweisen, wie die übrigen Bereiche des Außenringes 7.From Fig. 2 it can be seen that in the region of the deformable portion 11 of the outer ring 7 printing nipples 17 and 18 can be provided, which are advantageously hollow, i. H. have essentially the same wall thickness as the other areas of the outer ring 7.

Zur Einstellung der Druckkraft, die zum öffnen des Verschlusses erforderlich ist, können im Ringspalt zwischen Sperring 4 und Außenring 7 weitere Schrägstreben angeordnet sein. In Fig. 2 sind vier Paare jeweils V-förmig angeordnete Schrägstreben 12, 13, 14, 15 dargestellt. In Fig. 1 ist besonders deutlich zu ersehen, daß der Au-ßenring 7 im Bereich seines deformierbaren Abschnittes 11 in der Stufe 8 einen Schlitz 16 aufweist, um die Deformation zu erleichtern. An Stelle des Schlitzes 16 kann jedoch auch eine Wandstärkenverringerung vorgesehen sein, derart, daß sich an dieser Stelle eine dünne Kunststoffhaut befindet, die relativ leicht deformierbar ist.To set the compressive force required to open the closure, 7 additional oblique struts can be arranged in the annular gap between the locking ring 4 and the outer ring. In Fig. 2 four pairs of V-shaped oblique struts 12, 13, 14, 15 are shown. In Fig. 1 is particularly clearly seen that the A u-ßenring 7 in the region of its deformable section 11 in step 8 has a slot 16 to facilitate the deformation. Instead of the slot 16, however, a reduction in wall thickness can also be provided, such that there is a thin plastic skin at this point, which is relatively easily deformable.

Auch aus Fig. 3, die eine Draufsicht zeigt, ist die Anordnung des Schlitzes 16, der Druckwarzen 17, 18 und Schrägstreben 9 und 10 deutlich erkennbar.3, which shows a top view, the arrangement of the slot 16, the pressure nipples 17, 18 and oblique struts 9 and 10 can be clearly seen.

Beim Aufschrauben eines erfindungsgemäßen Kindersicherheitsverschlusses bedarf es keiner besonderen Maßnahme, da durch Aufschrauben des Innengewindes 2 auf das Außengewinde des Behälterhalses die Schraubkappe 1 in bekannter Weise aufgeschraubt wird. Sobald der Sperring 4 mit seiner dreieckförmigen Sperrstufe 5 an den Transferring am Behälterhals anstößt, ist lediglich ein stärkeres Drehmoment erforderlich, um eine Aufweitung des Sperringes 4 mittels des achsparallelen Schlitzes 6 und ein Übergreifen des Sperrringes 4 über den Transferring herbeizuführen. Die Stärke der dazu erforderlichen Kraft wird durch die nach Art einer Spannzange wirkenden Schrägstreben 9, 10 bzw. 12 bis 15 bestimmt. Eine weitere Möglichkeit der Beeinflussung der Kraft zum Aufschrauben besteht in der Wahl der Härte des jeweils verwendeten Kunststoffes für den Verschluß.When screwing on a child safety lock according to the invention, no special measure is required, since the screw cap 1 is screwed on in a known manner by screwing the internal thread 2 onto the external thread of the container neck. As soon as the locking ring 4 with its triangular locking step 5 abuts the transfer ring on the container neck, only a greater torque is required to bring about an expansion of the locking ring 4 by means of the axially parallel slot 6 and an overlap of the locking ring 4 via the transfer ring. The strength of the force required for this is determined by the oblique struts 9, 10 or 12 to 15 acting in the manner of a collet. Another possibility of influencing the force for screwing on is to choose the hardness of the plastic used for the closure.

Falls ein Kind versucht, den Verschluß wieder vom Behälter abzuschrauben, gelingt dies nicht, da der kürzere Schenkel der dreieckförmigen Sperrstufe 5 sich von unten gegen den Transferring legt und auch bei relativ großer Kraftanwendung auf den Verschluß ein Abschrauben verhindert.If a child tries to unscrew the closure from the container again, this will not succeed because the shorter leg of the triangular locking step 5 lies against the transfer ring from below and prevents unscrewing even with relatively great force being applied to the closure.

Ein öffnen ist erst dann möglich, wenn im Bereich des deformierbaren Abschnittes 11 des Außenringes 7 nach innen gerichtete radiale Druckkräfte ausgeübt werden. Dadurch verformt sich der deformierbare Abschnitt 11 aus seiner annähernd kreisabschnittförmigen Form in eine gestreckte zum Sperring 4 etwa tangentiale Form und zieht dadurch über die Schrägstreben 9, 10 den inneren Sperring 4 unter Vergrößerung des achsparallelen Schlitzes 6 soweit auseinander, daß der Sperring 4 über den Transferring am Behälterhals gleiten kann.Opening is only possible if in the region of the deformable section 11 of the outer ring 7 inward radial pressure forces are exerted. As a result, the deformable section 11 deforms from its approximately circular section shape into an elongated shape which is approximately tangential to the locking ring 4 and thereby pulls the inner locking ring 4 apart by enlarging the oblique struts 9, 10, enlarging the axially parallel slot 6 to such an extent that the locking ring 4 over the transfer ring can slide on the neck of the container.

Wenn bei dem einfachen Ausführungsbeispiel, die in Fig. 2 dargestellten Druckwarzen 17, 18 fehlen, dann vermag auch ein älteres Kind nicht zu erkennen, daß durch Ausübung eines radialen Druckes der Verschluß geöffnet werden kann. Selbst wenn ein Kind versuchen würde, durch Deformation des Außenringes 7 ein öffnen zu bewirken, dann müsste es mehr oder weniger zufällig den deformierbaren Abschnitt 11 erfassen und dort relativ starke radiale Druckkräfte aufwenden, um unter gleichzeitigem Drehen den Verschluß vom Behälter abzuschrauben.If, in the simple exemplary embodiment, the pressure warts 17, 18 shown in FIG. 2 are missing, then even an older child cannot see that the closure can be opened by exerting a radial pressure. Even if a child tried to bring about an opening by deformation of the outer ring 7, he would have to grasp the deformable section 11 more or less by chance and apply relatively strong radial compressive forces there to unscrew the closure from the container while rotating it.

Zur Erleichterung der Betätigung des Kindersicherheitsverschlusses durch Erwachsene kann auf der Oberfläche der Schraubkappe 1 ein entsprechender Hinweis angebracht werden, daß zum öffnen der Wulst bzw. Druckwarze 17, 18 nach innen zu drücken sind.To make it easier for adults to operate the child safety lock, a corresponding note can be attached to the surface of the screw cap 1 that the bead or pressure nipple 17, 18 must be pressed inwards to open it.

Um die Sicherheit gegen unbefugtes öffnen des Verschlusses, insbesondere durch Kinder, im größtmöglichen Maße sicherzustellen, ist die Ausbildung des Sperringes 4 bzw. der Sperrstufe 5, in Abstimmung mit dem KunststoffMaterial so getroffen, daß das für das Aufschrauben des Verschlusses erforderliche aufzubringende Drehmoment stets größer ist, als der zum Zuschrauben benötigte Drehmoment. Die Relation der beiden Drehmomente kann insbesondere durch die geometrische Gestaltung der Sperrstufe 5 eingestellt werden.In order to ensure the greatest possible degree of security against unauthorized opening of the closure, in particular by children, the design of the locking ring 4 or locking level 5 is made in coordination with the plastic material so that the torque required for screwing on the closure is always greater is than the torque required for screwing. The relation of the two torques can be adjusted in particular by the geometrical design of the blocking stage 5.

Die Erfindung ist nicht auf das dargestellte Ausführungsbeispiel beschränkt. Sie umfasst auch alle fachmännischen Anwandlungen und Weiterbildungen sowie Teil-und/oder Unterkömbinationen der beschriebenen und/oder dargestellten Merkmale und Maßnahmen.

Figure imgb0001
The invention is not restricted to the exemplary embodiment shown. It also encompasses all professional applications and further training as well as partial and / or sub-combinations of the described and / or illustrated features and measures.
Figure imgb0001

Claims (7)

1. Kindersicherheitsverschluß aus Kunststoff, für Behälter mit Hals und Schraubgewinde, in Form einer Schraubkappe (1), mit einem einen Transferring am Behälterhals übergreifenden Sperring (4), durch dessen elastische Deformation der Verschluß abschraubbar ist, dadurch gekennzeichnet, daß der Sperring (4) eine im Querschnitt etwa dreieckförmige innere Sperrstufe (5) und mindestens einen achsparallelen Schlitz (6) aufweist, daß der Sperring (4) von einem Außenring (7) umgeben ist, der mit dem Sperring (4) über mindestens zwei Schrägstreben (9, 10) verbunden ist und im Bereich eines achsparallelen Schlitzes (6) der Sperring (4) einen deformierbaren Abschnitt (11) aufweist, der bei radialem Druck durch Vergrößerung seines Krümmungsradius über die dem achsparallelen Schlitz (6) benachbarten Schrägstreben (9, 10) den Sperring (4) unter Vergrößerung des achsparallelen Schlitzes (6) derart aufweitet, daß der Sperring (4) über den Transferring am Behälterhals gleitet und daß Kappe (1), Sperring (4) , Außenring (7) sowie Schrägstreben (9, 10) einstückig ausgebildet sind.1. Child safety closure made of plastic, for containers with a neck and screw thread, in the form of a screw cap (1), with a locking ring (4) overlapping a transfer ring on the container neck, by means of whose elastic deformation the closure can be unscrewed, characterized in that the locking ring (4 ) has an approximately triangular inner locking step (5) and at least one axially parallel slot (6) that the locking ring (4) is surrounded by an outer ring (7) which is connected to the locking ring (4) via at least two oblique struts (9, 10) is connected and in the area of an axially parallel slot (6) the locking ring (4) has a deformable section (11) which, under radial pressure, increases its radius of curvature via the oblique struts (9, 10) adjacent to the axially parallel slot (6) Locking ring (4) with enlargement of the axially parallel slot (6) so that the locking ring (4) slides over the transfer ring on the container neck and that cap (1), Sperrin g (4), outer ring (7) and oblique struts (9, 10) are integrally formed. 2. Kindersicherheitsverschluß nach Anspruch 1, dadurch gekennzeichnet, daß zwischen Sperring (4) und Außenring (7) mehrere Paare V-förmig angeordneter Schrägstreben (12 - 15) vorgesehen sind.2. Child safety lock according to claim 1, characterized in that between the locking ring (4) and outer ring (7) several pairs of V-shaped oblique struts (12 - 15) are provided. 3. Kindersicherheitsverschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen Außenring (4) und Schraubkappe (1) im Bereich des deformierbaren Abschnittes (11) des Außenringes (7) in einer Stufe (8) mindestens ein Schlitz (16) vorgesehen ist.3. Child safety closure according to claim 1 or 2, characterized in that between the outer ring (4) and screw cap (1) in the region of the deformable portion (11) of the outer ring (7) in one step (8) at least one slot (16) is provided . 4. Kindersicherheitsverschluß nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen Außenring (4) und Schraubkappe (1) im Bereich des deformierbaren Abschnittes (11) des Außenringes (7) eine gegenüber dem restlichen Randbereich der Stufe (8) dünnere, elastisch deformierbare Kunststoffhaut vorgesehen ist.4. Child safety closure according to claim 1 or 2, characterized in that between the outer ring (4) and screw cap (1) in the region of the deformable portion (11) of the outer ring (7) compared to the remaining edge region of the step (8) thinner, elastically deformable Plastic skin is provided. 5. Kindersicherheitsverschluß nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Außenring (4) in seinem deformierbaren Abschnitt (11) mindestens eine nach außen gerichtete Druckwarze (17, 18) aufweist.5. Child safety lock according to one of claims 1 to 4, characterized in that the outer ring (4) in its deformable section (11) has at least one outwardly directed pressure wart (17, 18). 6. Kindersicherheitsverschluß nach Anspruch 5, dadurch gekennzeichnet, daß die Druckwarze(n) (17, 18) hohl ausgebildet ist (sind).6. Child safety lock according to claim 5, characterized in that the pressure wart (s) (17, 18) is hollow (are). 7. Kindersicherheitsverschluß nach einem oder mehreren der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das aufzubringende Drehmoment beim Aufschrauben des Verschlusses stets größer ist, als beim Zuschrauben.7. Child safety lock according to one or more of claims 1 to 6, characterized in that the torque to be applied when screwing on the lock is always greater than when screwing on.
EP19800105537 1979-09-22 1980-09-16 Childproof closure Expired EP0025966B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2938386 1979-09-22
DE19792938386 DE2938386A1 (en) 1979-09-22 1979-09-22 CHILD SAFETY LOCK

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EP0025966A1 true EP0025966A1 (en) 1981-04-01
EP0025966B1 EP0025966B1 (en) 1983-06-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536722A1 (en) * 1982-11-25 1984-06-01 Cebal Injection moulded plastics bottle cap
EP2230188A1 (en) * 2009-03-17 2010-09-22 Remy & Geiser GmbH Single-piece child-proof screw lock

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE20000110A1 (en) 2000-02-07 2001-08-22 Loctite R & D Ltd Applicator, Applicator Cap and a Container Having an Applicator Cap

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US3182840A (en) * 1963-11-05 1965-05-11 Dean A Polzin Safety bottle closure
US3371808A (en) * 1966-08-01 1968-03-05 Evert D. Velt Unitary safety cap
US3472411A (en) * 1968-03-04 1969-10-14 Basic Products Dev Co Safety closure for a bottle
DE2130098A1 (en) * 1971-06-18 1972-12-28 Robert Fincke Fa Bottle with a push-on cap
DE2449134A1 (en) * 1974-10-16 1976-04-29 Hans Heinlein Safety closure system for bottles - consists of locking ring with locking cam fitted round screw-on cap engaging with triangular lug on bottle neck
US3958708A (en) * 1975-05-05 1976-05-25 Sunbeam Plastics Corporation Oversized safety cap
US4002258A (en) * 1976-02-20 1977-01-11 Plastisonics Company, Inc. Child resistant closure
GB1461226A (en) * 1974-08-05 1977-01-13 Hidding W E Tamperproof caps
DE2658577A1 (en) * 1976-01-08 1977-07-14 Leeds & Micallef SECURITY SCREW CAP
DE2704461A1 (en) * 1977-02-03 1978-08-10 Hans Heinlein CLOSING CAP WITH GENUINE SECURITY

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182840A (en) * 1963-11-05 1965-05-11 Dean A Polzin Safety bottle closure
US3371808A (en) * 1966-08-01 1968-03-05 Evert D. Velt Unitary safety cap
US3472411A (en) * 1968-03-04 1969-10-14 Basic Products Dev Co Safety closure for a bottle
DE2130098A1 (en) * 1971-06-18 1972-12-28 Robert Fincke Fa Bottle with a push-on cap
GB1461226A (en) * 1974-08-05 1977-01-13 Hidding W E Tamperproof caps
DE2449134A1 (en) * 1974-10-16 1976-04-29 Hans Heinlein Safety closure system for bottles - consists of locking ring with locking cam fitted round screw-on cap engaging with triangular lug on bottle neck
US3958708A (en) * 1975-05-05 1976-05-25 Sunbeam Plastics Corporation Oversized safety cap
DE2658577A1 (en) * 1976-01-08 1977-07-14 Leeds & Micallef SECURITY SCREW CAP
US4002258A (en) * 1976-02-20 1977-01-11 Plastisonics Company, Inc. Child resistant closure
DE2704461A1 (en) * 1977-02-03 1978-08-10 Hans Heinlein CLOSING CAP WITH GENUINE SECURITY

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2536722A1 (en) * 1982-11-25 1984-06-01 Cebal Injection moulded plastics bottle cap
EP2230188A1 (en) * 2009-03-17 2010-09-22 Remy & Geiser GmbH Single-piece child-proof screw lock

Also Published As

Publication number Publication date
EP0025966B1 (en) 1983-06-15
DE2938386A1 (en) 1981-04-09

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