EP0026284B1 - Safety screw-cap - Google Patents

Safety screw-cap Download PDF

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Publication number
EP0026284B1
EP0026284B1 EP80104342A EP80104342A EP0026284B1 EP 0026284 B1 EP0026284 B1 EP 0026284B1 EP 80104342 A EP80104342 A EP 80104342A EP 80104342 A EP80104342 A EP 80104342A EP 0026284 B1 EP0026284 B1 EP 0026284B1
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EP
European Patent Office
Prior art keywords
cap
ribs
inner cap
screw closure
closure according
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
Application number
EP80104342A
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German (de)
French (fr)
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EP0026284A1 (en
Inventor
Klaus-Werner Finke
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Robert Finke Kunststoff-Spritzguss-Werk GmbH
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Robert Finke Kunststoff-Spritzguss-Werk GmbH
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Publication of EP0026284A1 publication Critical patent/EP0026284A1/en
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Publication of EP0026284B1 publication Critical patent/EP0026284B1/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
    • B65D50/041—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 the closure comprising nested inner and outer caps or an inner cap and an outer coaxial annular member, which can be brought into engagement to enable removal by rotation

Definitions

  • the invention relates to a safety screw closure consisting of an inner cap with an internal thread and an outer cap which overlaps the inner cap with an axial distance and can be displaced axially in the direction of the inner edge, in which there are axially extending outer ribs on the inner edge and corresponding inner ribs on the outer edge, the latter of which are located slide opposite surfaces without axial pressure without contact.
  • Such a screw cap, secured against undesired opening by hand, is intended to make access more difficult, with the aim that dangerous contents are not accessible to children of the particularly vulnerable age group.
  • a child-resistant pack must guarantee the required level of safety.
  • an outer circumferential annular shoulder is located near the open end of the inner cap. From this, outer ribs extend in the direction of the bottom of the inner cap in the axial direction of its internal thread. These outer ribs are kept short and form a rib ring running around the outside of the inner cap.
  • the user of the screw cap can only start turning when he has brought the inner ribs of the outer cap into connection with the rib ring of the inner cap, since otherwise the lower ends of the ribs of the outer cap slip over the rib ring without engaging with it in a force-fitting manner Connection to come.
  • a child-proof screw cap for bottles which consists of an inner cap and an outer cap.
  • An outer bead is arranged on the inner cap and a corresponding inner bead is arranged on the outer cap, so that the outer cap can be rotated relative to the inner cap without the inner cap also being rotated.
  • On the outer surface of the bottom of the inner cap there is a stop with which a driver arranged on the inside of the bottom of the outer cap interacts.
  • a compression spring that keeps the distance between the two cap bottoms so large that the driver and the stop when turning the outer cap do not come into contact with each other.
  • the spring is compressed between the two cap bottoms, so that the driver on the bottom of the outer cap is displaced toward the bottom of the inner cap and by rotating the outer cap with simultaneous axial pressure the outer cap of the driver can be turned against the stop, after which the inner cap can be unscrewed.
  • closure cap which consists of an inner cap and an outer cap located above it.
  • the inner cap On the upper part, the inner cap has closely spaced outer ribs over the entire circumference, while on the outer cap two ribs are arranged at two diametrically opposite points, which can be connected to the ribs of the inner cap by means of opposing forces in order to unscrew the inner cap.
  • security screw cap engages an outer cap with an axial distance on the Ge thread, for example, a bottle neck on screwed inner cap.
  • To unscrew the inner cap lie from the bottom of the outer cap inwardly projecting lugs against corresponding lugs arranged on the outside of the bottom of the inner cap, so that the screwing motion is transmitted via these lugs. So that the lugs have no unscrewing effect when turning the outer cap in a direction opposite to the screwing direction, they have wedge or inclined surfaces in the unscrewing direction, which slide over one another without effect and do not affect the screw cap.
  • the invention is based on the object of creating a safety screw closure for bottles and similar containers which can be displaced axially by slightly
  • the outer cap can be opened towards the inner cap and rotated at the same time without the.
  • Driver elements must be hooked together over a larger height range of the screw cap.
  • the screw closure can also be designed such that the inner cap has an outer bead at its open end, from which the outer ribs extend to just before the bottom of the inner cap.
  • the bevels of the ribs of the inner cap are located near the bottom of the inner cap, so that the ribs of the outer cap can be correspondingly short.
  • the ribs of the inner cap can be rectangular or trapezoidal in cross-section, in the latter case the surfaces lying at the front in the case of right-hand threads in the screwing direction are chamfered.
  • the ribs offer minimal resistance in the tightening direction, while ensuring an exact positive fit in the unscrewing direction. It is also advisable to arrange a circumferential sealing insert on the bottom of the inner cap.
  • the outer cap advantageously has an inner bead at its open end with which it engages over the outer bead of the inner cap. This ensures that an axial lifting of the outer cap from the inner cap is not possible only by hand without the aid of special tools.
  • the screw cap can be designed so that the inner ribs of the outer cap are directed from the cap base in the direction of the open end of the outer cap.
  • the ribs of the outer cap protrude only slightly from the bottom of the cap. It is advisable to keep the ribs of the outer cap rectangular in cross section.
  • the elongated rib is advantageously rectangular up to the height of the other ribs in cross section and triangular in its further course. It is advisable to chamfer the surface of the extended rib at the front in the direction of unscrewing. As a result, when the outer cap is turned in the unscrewing direction, the long rib slides with its beveled surface over the outer ribs of the inner cap without taking the inner cap with it. On the other hand, the long rib hooks with its high edge on the opposite side with the opposite high edges of the outer ribs of the inner cap, so that the inner cap can be screwed onto the bottle thread with ease.
  • the two-part design of the screw closure according to the invention in connection with the outer ribs of the inner cap has proven to be particularly advantageous.
  • the inner cap can be used as a normal, i.e. H. Use an unsecured closure, but convert it at any time into a child-resistant closure that conforms to the standards by attaching the outer cap.
  • This also simplifies warehousing because the normal closure consisting of the inner cap can be converted at any time if necessary. This means that customers are supplied with only the inner cap or with both caps.
  • Another advantage of the relatively long ribs results from the snarling sound of simply turning the outer cap, which can alert supervisors if children are involved in the closure without permission.
  • the inner cap 1 has an internal thread 2 and at its open end an outer bead 3, from which outer ribs 4 on the outer wall of the inner cap 1 extend axially to the internal thread 2 in the direction of the bottom 5 of the inner cap 1.
  • the distance between the rib ends from the bottom 5 is small.
  • the outer ribs 4 of the inner caps 1 are ver at their end facing the cap base 5 with bevels 6 see that with right-hand threads are inclined downwards in the closing or tightening direction.
  • the outer ribs 4 have a rectangular cross section.
  • the ribs can also have a trapezoidal cross section, in such a way that the surface 7 lying at the front in the case of a right-hand thread in the opening or tightening direction is chamfered.
  • a circumferential sealing insert 8 runs on the inside of the inner cap base 5.
  • the outer cap 9 shown in FIGS. 2 and 4 has at its open end an inner bead 19 with which it engages over the outer bead 3 of the inner cap 1.
  • the inner ribs 10 of the outer cap 9 run on the inner wall of the outer cap 9 in the axial direction to the internal thread 2 of the inner cap 1 in the direction of the open end of the outer cap 9; they are comparatively short and have bevels 12 at their ends facing the open end of the outer cap. In the case of right-hand threads, these bevels 12 are inclined upward in the opening or unscrewing direction.
  • the ribs 10 of the outer cap 9 have a rectangular cross section.
  • elongated ribs 13 Arranged on the circumference of the outer cap 9 are three elongated ribs 13 which are offset from one another by 120 ° and end shortly before the open end of the outer cap 9.
  • the elongated ribs 13 have a rectangular cross section in their area 14 adjacent to the cap base 11 up to the height of the remaining inner ribs 10 and a triangular cross section in their further course 15.
  • the triangular cross section of the extension 15 of the inner rib 13 is designed such that the surfaces 16 lying at the front in the right-hand thread in the unscrewing direction are chamfered.
  • a plurality of spring elements 17, 18 are arranged on the inside of the base 11 of the outer cap 9, which are formed as tabs on the base 11 of the outer cap 9 and are inclined in the direction of the cap axis.
  • the inner cap shown in FIG. 1 with its internal thread 2 is first screwed onto the external thread of the bottle in the usual way.
  • the outer cap 9 shown in FIG. 2 is then placed over the inner cap 1 so that the inner bead 19 of the outer cap 9 lies over the outer bead 3 of the inner cap 1, so that the outer cap 9 can no longer be removed from the inner cap 1 without the aid of special tools can be deducted.
  • the shorter inner ribs 10 of the outer cap 9 lie above the longer outer ribs 4 of the inner cap 1, and offset from one another in such a way that the inner ribs 10 of the outer cap 9 point into the groove located between two outer ribs 4. Accordingly, the extension 15 of each rib 13 also lies between two outer ribs 4 of the inner cap 1.
  • the outer cap 9 can be freely rotated without the inner cap 1 also rotating.
  • the extension 15 of the rib 13 slips over the outer ribs 4 of the inner cap 1 without also rotating them.
  • the inner cap 1 and the outer cap 9 in the locked state i.e. H. screw on as a structural unit on the bottle when the high edge of the extension 15 of the rib 13 lies against an opposite edge of an outer rib 4. Then the inner cap can be screwed firmly onto the bottle thread by means of the outer cap 9.

Description

Die Erfindung betrifft einen Sicherheitsschraubverschluß aus einer Innenkappe mit einem Innengewinde sowie einer die Innenkappe mit axialem Abstand übergreifenden und zum Abschrauben axial in Richtung auf die Innenkante verschiebbaren Außenkappe, bei dem sich an der Innenkante axial verlaufende Außenrippen und an der Außenkante korrespondierende Innenrippen befinden, deren sich gegenüberliegenden Flächen ohne Axialdruck berührungslos übereinandergleiten.The invention relates to a safety screw closure consisting of an inner cap with an internal thread and an outer cap which overlaps the inner cap with an axial distance and can be displaced axially in the direction of the inner edge, in which there are axially extending outer ribs on the inner edge and corresponding inner ribs on the outer edge, the latter of which are located slide opposite surfaces without axial pressure without contact.

Ein derartiger, gegen ein unerwünschtes Öffnen von Hand gesicherter Schraubverschluß soll den Zugriff erschweren mit dem Ziel, daß gefährliches Füllgut Kindern der besonders gefährdeten Altersgruppe nicht zugänglich ist. Eine kindergesicherte Packung muß den erforderlichen Sicherheitsgrad garantieren.Such a screw cap, secured against undesired opening by hand, is intended to make access more difficult, with the aim that dangerous contents are not accessible to children of the particularly vulnerable age group. A child-resistant pack must guarantee the required level of safety.

Bei einem aus der DE-GM 7 634 267 bekannten kindersicheren Schraubverschluß für Flaschen befindet sich in der Nähe des offenen Endes der Innenkappe eine außen umlaufende Ringschulter. Von dieser aus erstrecken sich Außenrippen in Richtung auf den Boden der Innenkappe in axialer Richtung zu deren Innengewinde. Diese Außenrippen sind kurz gehalten und bilden einen auf der Außenseite der Innenkappe umlaufenden Rippenring.In a child-resistant screw cap for bottles known from DE-GM 7 634 267, an outer circumferential annular shoulder is located near the open end of the inner cap. From this, outer ribs extend in the direction of the bottom of the inner cap in the axial direction of its internal thread. These outer ribs are kept short and form a rib ring running around the outside of the inner cap.

An der.lnnenseite der Außenkappe befinden sich korrespondierende Innenrippen, die sich vom Boden der Außenkappe aus bis kurz vor das offene Ende der Außenkappe erstrecken, um zu gewährleisten, daß sich die Innenrippen der Außenkappe mit dem Rippenkranz der Innenkappe durch axialen Druck auf die Außenkappe in Richtung auf die Innenkappe miteinander in kraftschlüssige Verbindung bringen lassen. Am Boden der Außenkappe sind Federelemente angeordnet, die sich gegen die Innenkappe abstützen und sicherstellen, daß die Innenrippen der Außenkappe im Ruhezustand außer Eingriff mit dem Rippenkranz der Innenkappe bleiben. Dieser bekannte Verschluß läßt sich dadurch öffnen, daß die Außenkappe gegen die Federkraft in Richtung auf die Innenkappe gedrückt und gleichzeitig die Außenkappe gedreht wird. Mit dem Drehen kann der Benutzer des Schraubverschlusses erst dann beginnen, wenn er die Innenrippen der Außenkappe mit dem Rippenkranz der Innenkappe in Verbindung gebracht hat, da ansonsten die unteren Enden der Rippen d.er Außenkappe über den Rippenkranz hinwegrutschen, ohne mit ihm in eine kraftschlüssige Verbindung zu kommen.On the inside of the outer cap there are corresponding inner ribs which extend from the bottom of the outer cap to just before the open end of the outer cap, in order to ensure that the inner ribs of the outer cap with the ring of ribs of the inner cap by axial pressure on the outer cap in Allow the direction on the inner cap to be non-positively connected. At the bottom of the outer cap spring elements are arranged which are supported against the inner cap and ensure that the inner ribs of the outer cap remain out of engagement with the rib ring of the inner cap in the idle state. This known closure can be opened by pressing the outer cap against the spring force in the direction of the inner cap and simultaneously rotating the outer cap. The user of the screw cap can only start turning when he has brought the inner ribs of the outer cap into connection with the rib ring of the inner cap, since otherwise the lower ends of the ribs of the outer cap slip over the rib ring without engaging with it in a force-fitting manner Connection to come.

Aus der DE-GM 7 534 340 ist des weiteren ein kindersicherer Druck-Drehverschluß für Flaschen bekannt, der aus einer Innenkappe und einer Außenkappe besteht. An der Innenkappe ist ein Außenwulst und an der Außenkappe ein korrespondierender Innenwulst angeordnet, so daß sich die Außenkappe gegenüber der Innenkappe drehen läßt, ohne daß dabei die Innenkappe mitgedreht wird. An der Außenfläche des Bodens der Innenkappe befindet sich ein Anschlag, mit dem ein an der Innenseite des Bodens der Außenkappe angeordneter Mitnehmer zusammenwirkt. Zwischen dem Boden der Außenkappe und dem Boden der Innenkappe liegt eine Druckfeder, die den Abstand zwischen den beiden Kappenböden so groß hält, daß der Mit nehmer und der Anschlag beim Drehen der Au ßenkappe nicht miteinander in Berührung kom men. Falls auf die Außenkappe ein in axialer Richtung auf die Innenkappe gerichteter Druck wirkt, wird die Feder zwischen den beiden Kap penböden zusammengedrückt, so daß der Mitnehmer am Boden der Außenkappe in Richtung auf den Boden der Innenkappe verschoben und durch Drehen der Außenkappe bei gleichzeitigem Axialdruck auf die Außenkappe der Mitnehmer gegen den Anschlag gedreht werden kann, wonach sich die Innenkappe abschrauben läßt.From DE-GM 7 534 340 a child-proof screw cap for bottles is also known, which consists of an inner cap and an outer cap. An outer bead is arranged on the inner cap and a corresponding inner bead is arranged on the outer cap, so that the outer cap can be rotated relative to the inner cap without the inner cap also being rotated. On the outer surface of the bottom of the inner cap there is a stop with which a driver arranged on the inside of the bottom of the outer cap interacts. Between the bottom of the outer cap and the bottom of the inner cap is a compression spring that keeps the distance between the two cap bottoms so large that the driver and the stop when turning the outer cap do not come into contact with each other. If a pressure directed in the axial direction on the inner cap acts on the outer cap, the spring is compressed between the two cap bottoms, so that the driver on the bottom of the outer cap is displaced toward the bottom of the inner cap and by rotating the outer cap with simultaneous axial pressure the outer cap of the driver can be turned against the stop, after which the inner cap can be unscrewed.

Aus der DE-OS 2724337 ist schließlich eine Verschlußkappe bekannt, die aus einer Innenkappe und einer darüber befindlichen Außenkappe besteht. Am oberen Teil weist die Innenkappe über den gesamten Umfang verteilt dicht nebeneinanderliegende Außenrippen auf, während an der Außenkappe an zwei diametral gegenüberliegenden Stellen einige Rippen angeordnet sind, die sich mittels entgegengesetzter Kräfte mit den Rippen der Innenkappe kraftschlüssig verbinden lassen, um die Innenkappe abzuschrauben.From DE-OS 2724337 a closure cap is finally known, which consists of an inner cap and an outer cap located above it. On the upper part, the inner cap has closely spaced outer ribs over the entire circumference, while on the outer cap two ribs are arranged at two diametrically opposite points, which can be connected to the ribs of the inner cap by means of opposing forces in order to unscrew the inner cap.

Bei einem aus der US-PS 3 638 819 bekannten Sicherheitsschraubverschluß übergreift eine Außenkappe mit axialem Abstand eine auf das Ge winde beispielsweise eines Flaschenhalses auf geschraubte Innenkappe. Zum Aufschrauben der Innenkappe legen sich vom Boden der Au ßenkappe nach innen vorspringende Ansätze gegen korrespondierende, außen am Boden der Innenkappe angeordnete Ansätze, so daß sich die Aufschraubbewegung über diese Ansätze überträgt. Damit die Ansätze beim Drehen der Außenkappe in eine zur Festschraubrichtung entgegengesetzten Richtung keine Abschraubwirkung ausüben, weisen sie in Abschraubrichtung Keil- bzw. Schrägflächen auf, die beim Auftreffen wirkungslos übereinandergleiten und den Schraubverschluß nicht beeinflussen. Zum Lösen muß vielmehr auf die Mitte des Bodens der Außenkappe ein Druck ausgeübt werden, worauf sich die Außenkappe absenkt und mit innen um fangsverteilt angeordneten Vertikalstegen in korrespondierende Schlitze bzw. Nuten einer entgegengesetzt zum Boden der Innenkappe befindlichen Wulst eingreift. Die in die Schlitze der Wulst eingehakten Mitnehmerstege lösen beim Drehen der Außenkappe in Aufschraubrichtung die Innenkappe vom Gewinde des Flaschenhal ses.In a known from the US-PS 3 638 819 security screw cap engages an outer cap with an axial distance on the Ge thread, for example, a bottle neck on screwed inner cap. To unscrew the inner cap lie from the bottom of the outer cap inwardly projecting lugs against corresponding lugs arranged on the outside of the bottom of the inner cap, so that the screwing motion is transmitted via these lugs. So that the lugs have no unscrewing effect when turning the outer cap in a direction opposite to the screwing direction, they have wedge or inclined surfaces in the unscrewing direction, which slide over one another without effect and do not affect the screw cap. Rather, to release a pressure must be exerted on the center of the bottom of the outer cap, whereupon the outer cap lowers and engages with corresponding vertically distributed vertical webs in corresponding slots or grooves of a bead located opposite the bottom of the inner cap. The driver webs hooked into the slots in the bead release the inner cap from the thread of the bottleneck when the outer cap is turned in the screw-on direction.

Der Erfindung liegt nun die Aufgabe zugrunde, einen Sicherheitsschraubverschluß für Flaschen und ähnliche Behälter zu schaffen, der sich durch geringfügiges axiales Verschieben der Au - ßenkappe in Richtung auf die Innenkappe und gleichzeitiges Drehen öffnen läßt, ohne daß die. Mitnehmerelemente über einen größeren Höhenbereich des Schraubverschlusses miteinander verhakt werden müssen.The invention is based on the object of creating a safety screw closure for bottles and similar containers which can be displaced axially by slightly The outer cap can be opened towards the inner cap and rotated at the same time without the. Driver elements must be hooked together over a larger height range of the screw cap.

Diese Aufgabe wird dadurch gelöst, daß bei einem Sicherheitsverschluß der eingangs genannten Art erfindungsgemäß die Außenrippen der Innenkappe an ihren dem Kappenboden zugewandten Enden bei Rechtsgewinde in Festschraubrichtung nach unten geneigte Schrägen und die Innenrippen der Außenkappe an ihren dem offenen Ende der Außenkappe zugewandten Enden entsprechende, in Abschraubrichtung nach oben geneigte und mit den Schrägen der Innenkappen zur Anlage kommende Schrägen aufweisen.This object is achieved in that, according to the invention, in the case of a safety closure of the type mentioned at the outset, the outer ribs of the inner cap at their ends facing the cap base with right-hand threads in the screw-down direction inclined slopes and the inner ribs of the outer cap at their ends corresponding to the open end of the outer cap Unscrew direction inclined upwards and bevelling with the bevels of the inner caps.

Auf diese Weise ergibt sich ein Sicherheitsschraubverschluß, bei dem die Schrägen der Rippen der Innenkappe und die Schrägen der Rippen der.Außenkappe im Ruhezustand nur einen geringen Abstand voneinander besitzen und sich durch eine geringe Axialverschiebung der Außenkappe in Richtung auf die Innenkappe die miteinander korrespondierenden Schrägen kraftschlüssig miteinander verbinden lassen, um den Verschluß öffnen zu können.This results in a safety screw closure in which the bevels of the ribs of the inner cap and the bevels of the ribs of the outer cap are only a small distance apart from one another in the idle state and the corresponding bevels are non-positive due to a slight axial displacement of the outer cap in the direction of the inner cap Allow each other to connect to open the lock.

Der Schraubverschluß kann weiterhin derart ausgebildet sein, daß die Innenkappe an ihrem offenen Ende einen Außenwulst besitzt, von dem aus sich die Außenrippen bis kurz vor den Boden der Innenkappe erstrecken. Demzufolge befinden sich die Schrägen der Rippen der Innenkappe in der Nähe des Innenkappenbodens, so daß die Rippen der Außenkappe entsprechend kurz sein können.The screw closure can also be designed such that the inner cap has an outer bead at its open end, from which the outer ribs extend to just before the bottom of the inner cap. As a result, the bevels of the ribs of the inner cap are located near the bottom of the inner cap, so that the ribs of the outer cap can be correspondingly short.

Die Rippen der Innenkappe können im Querschnitt rechteckig oder trapezförmig ausgebildet sein, wobei im letzteren Falle die bei Rechtsgewinde in Festschraubrichtung vorn liegenden Flächen angeschrägt sind. Dadurch bieten die Rippen in der Festschraubrichtung einen minimalen Widerstand, während sie in Abschraubrichtung einen exakten Formschluß gewährleisten. Des weiteren empfiehlt es sich, am Boden der Innenkappe eine umlaufende Dichteinlage anzuordnen.The ribs of the inner cap can be rectangular or trapezoidal in cross-section, in the latter case the surfaces lying at the front in the case of right-hand threads in the screwing direction are chamfered. As a result, the ribs offer minimal resistance in the tightening direction, while ensuring an exact positive fit in the unscrewing direction. It is also advisable to arrange a circumferential sealing insert on the bottom of the inner cap.

Vorteilhafterweise besitzt die Außenkappe an ihrem offenen Ende einen Innenwulst, mit dem sie den Außenwulst der Innenkappe übergreift. Dadurch ist sichergestellt, daß ein axiales Abheben der Außenkappe von der Innenkappe nur von Hand ohne Zuhilfenahmen besonderer Werkzeuge nicht möglich ist.The outer cap advantageously has an inner bead at its open end with which it engages over the outer bead of the inner cap. This ensures that an axial lifting of the outer cap from the inner cap is not possible only by hand without the aid of special tools.

Der Schraubverschluß kann so ausgebildet sein, daß die Innenrippen der Außenkappe vom Kappenboden aus in Richtung auf das offene Ende der Außenkappe gerichtet sind. Die Rippen der Außenkappe stehen dabei nur wenig vom Boden der Kappe ab. Es empfiehlt sich, die Rippen der Außenkappe im Querschnitt rechteckig zu halten.The screw cap can be designed so that the inner ribs of the outer cap are directed from the cap base in the direction of the open end of the outer cap. The ribs of the outer cap protrude only slightly from the bottom of the cap. It is advisable to keep the ribs of the outer cap rectangular in cross section.

Weiterhin kann mindestens eine der auf den Umfang gleichmäßig verteilten Rippen der Außenkappe verlängert sein und bis kurz vor das offene Ende der Außenkappe ragen. Hierbei ist die verlängerte Rippe vorteilhafterweise bis zur Höhe der übrigen Rippen im Querschnitt rechteckig und in ihrem weiteren Verlauf im Querschnitt dreieckig. Es empfiehlt sich, die bei Rechtsgewinde in Abschraubrichtung vorn liegende Fläche der verlängerten Rippe anzuschrägen. Demzufolge rutscht die lange Rippe beim Drehen der Außenkappe in Abschraubrichtung mit ihrer angeschrägten Fläche über die Außenrippen der Innenkappe hinweg, ohne die Innenkappe mitzunehmen. Andererseits verhakt sich die lange Rippe mit ihrer auf der entgegengesetzten Seite befindlichen hohen Kante mit den gegenüberliegenden hohen Kanten der Außenrippen der Innenkappe, so daß sich die Innenkappe mühelos auf das Flaschengewinde schrauben läßt.Furthermore, at least one of the ribs of the outer cap, which are evenly distributed over the circumference, can be extended and protrude shortly before the open end of the outer cap. Here, the elongated rib is advantageously rectangular up to the height of the other ribs in cross section and triangular in its further course. It is advisable to chamfer the surface of the extended rib at the front in the direction of unscrewing. As a result, when the outer cap is turned in the unscrewing direction, the long rib slides with its beveled surface over the outer ribs of the inner cap without taking the inner cap with it. On the other hand, the long rib hooks with its high edge on the opposite side with the opposite high edges of the outer ribs of the inner cap, so that the inner cap can be screwed onto the bottle thread with ease.

Um zu gewährleisten, daß die Außenkappe und die Innenkappe immer einen genügend großen axialen Abstand voneinander haben, können am Boden der Außenkappe über den Umfang verteilt mehrere Federelemente, beispielsweise Lappen angeformt sein, die in Richtung auf die Kappenachse oder von der Achse weg geneigt sind.In order to ensure that the outer cap and the inner cap always have a sufficiently large axial distance from one another, several spring elements, for example rags, can be formed on the bottom of the outer cap, which are inclined in the direction of the cap axis or away from the axis.

Als besonders vorteilhaft erweist sich die Zweiteiligkeit des erfindungsgemäßen Schraubverschlusses im Zusammenhang mit den Außenrippen der Innenkappe. Auf diese Weise läßt sich die Innenkappe als normaler, d. h. ungesicherter Verschluß verwenden, aber jederzeit durch Aufstecken der Außenkappe in einen normgerechten kindergesicherten Verschluß umwandeln. Das vereinfacht auch die Lagerhaltung, weil sich der aus der Innenkappe bestehende Normalverschluß bei Bedarf jederzeit umrüsten läßt. Somit werden die Abnehmer entweder nur mit der Innenkappe oder mit beiden Kappen beliefert. Ein weiterer Vorteil der verhältnismäßig langen Rippen ergibt sich aus dem schnarrenden Geräusch beim bloßen Drehen der Außenkappe, das Aufsichtspersonen zu alarmieren vermag, wenn sich Kinder unerlaubt mit dem Verschluß befassen.The two-part design of the screw closure according to the invention in connection with the outer ribs of the inner cap has proven to be particularly advantageous. In this way, the inner cap can be used as a normal, i.e. H. Use an unsecured closure, but convert it at any time into a child-resistant closure that conforms to the standards by attaching the outer cap. This also simplifies warehousing because the normal closure consisting of the inner cap can be converted at any time if necessary. This means that customers are supplied with only the inner cap or with both caps. Another advantage of the relatively long ribs results from the snarling sound of simply turning the outer cap, which can alert supervisors if children are involved in the closure without permission.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels des näheren erläutert. In der Zeichnung zeigt

  • Fig. 1 die Innenkappe eines Schraubverschlusses teilweise im Schnitt,
  • Fig. 2 die Außenkappe im Schnitt,
  • Fig. 3 eine Draufsicht auf die Innenkappe gemäß Fig. 1, und
  • Fig. 4 einen Schnitt nach der Linie IV-IV der Fig. 2.
The invention is explained below with reference to an embodiment shown in the drawing. In the drawing shows
  • 1 shows the inner cap of a screw cap, partly in section,
  • 2 the outer cap in section,
  • Fig. 3 is a plan view of the inner cap of FIG. 1, and
  • 4 shows a section along the line IV-IV of FIG. 2nd

Die Innenkappe 1 besitzt ein Innengewinde 2 und an ihrem offenen Ende einen Außenwulst 3, von dem aus sich Außenrippen 4 an der Außenwandung der Innenkappe 1 axial zum Innengewinde 2 in Richtung auf den Boden 5 der Innenkappe 1 erstrecken. Der Abstand der Rippenenden vom Boden 5 ist gering. Die Außenrippen 4 der Innenkappen 1 sind an ihrem dem Kappenboden 5 zugewandten Ende mit Schrägen 6 versehen, die bei Rechtsgewinde in der Schließ- bzw. Festschraubrichtung nach unten geneigt sind.The inner cap 1 has an internal thread 2 and at its open end an outer bead 3, from which outer ribs 4 on the outer wall of the inner cap 1 extend axially to the internal thread 2 in the direction of the bottom 5 of the inner cap 1. The distance between the rib ends from the bottom 5 is small. The outer ribs 4 of the inner caps 1 are ver at their end facing the cap base 5 with bevels 6 see that with right-hand threads are inclined downwards in the closing or tightening direction.

Die Außenrippen 4 weisen, wie aus der linken Hälfte der Fig. 3 hervorgeht, einen rechteckigen Querschnitt auf. Die Rippen können jedoch auch, wie aus dem rechten Teil der Fig. 3 hervorgeht, einen trapezförmigen Querschnitt besitzen, und zwar derart, daß die bei Rechtsgewinde in Öffnungs- bzw. Festschraubrichtung vorn liegende Fläche 7 angeschrägt ist. Des weiteren verläuft auf der Innenseite des Innenkappenbodens 5 eine umlaufende Dichteinlage 8.As can be seen from the left half of FIG. 3, the outer ribs 4 have a rectangular cross section. However, as can be seen from the right part of FIG. 3, the ribs can also have a trapezoidal cross section, in such a way that the surface 7 lying at the front in the case of a right-hand thread in the opening or tightening direction is chamfered. Furthermore, a circumferential sealing insert 8 runs on the inside of the inner cap base 5.

Die in den Fig. 2 und 4 dargestellte Außenkappe 9 besitzt an ihrem offenen Ende einen Innenwulst 19, mit dem sie den Außenwulst 3 der Innenkappe 1 übergreift. Die Innenrippen 10 der Außenkappe 9 verlaufen an der Innenwand der Außenkappe 9 in axialer Richtung zum Innengewinde 2 der Innenkappe 1 in Richtung auf das offene Ende der Außenkappe 9; sie sind vergleichsweise kurz und besitzen an ihrem zum offenen Ende der Außenkappe hin gerichteten Ende Schrägen 12. Diese Schrägen 12 sind bei Rechtsgewinde in der Öffnungs- bzw. Abschraubrichtung nach oben geneigt. Die Rippen 10 der Außenkappe 9 besitzen einen rechteckigen Querschnitt.The outer cap 9 shown in FIGS. 2 and 4 has at its open end an inner bead 19 with which it engages over the outer bead 3 of the inner cap 1. The inner ribs 10 of the outer cap 9 run on the inner wall of the outer cap 9 in the axial direction to the internal thread 2 of the inner cap 1 in the direction of the open end of the outer cap 9; they are comparatively short and have bevels 12 at their ends facing the open end of the outer cap. In the case of right-hand threads, these bevels 12 are inclined upward in the opening or unscrewing direction. The ribs 10 of the outer cap 9 have a rectangular cross section.

Auf den Umfang der Außenkappe 9 sind drei um 120° gegeneinander versetzte verlängerte Rippen 13.angeordnet, die kurz vor dem offenen Ende der Außenkappe 9 enden. Die verlängerten Rippen 13 weisen in ihrem dem Kappenboden 11 benachbarten Bereich 14 bis zur Höhe der übrigen Innenrippen 10 einen rechteckigen Querschnitt und in ihrem weiteren Verlauf 15 einen dreieckigen Querschnitt auf. Der dreieckige Querschnitt der Verlängerung 15 der Innenrippe 13 ist so ausgeführt, daß die bei Rechtsgewinde in Abschraubrichtung vorn liegenden Flächen 16 angeschrägt sind.Arranged on the circumference of the outer cap 9 are three elongated ribs 13 which are offset from one another by 120 ° and end shortly before the open end of the outer cap 9. The elongated ribs 13 have a rectangular cross section in their area 14 adjacent to the cap base 11 up to the height of the remaining inner ribs 10 and a triangular cross section in their further course 15. The triangular cross section of the extension 15 of the inner rib 13 is designed such that the surfaces 16 lying at the front in the right-hand thread in the unscrewing direction are chamfered.

Außerdem sind, wie insbesondere aus Fig. 4 ersichtlich ist, an der Innenseite des Bodens 11 der Außenkappe 9 mehrere Federelemente 17, 18 angeordnet, die als Lappen an dem Boden 11 der Außenkappe 9 angeformt und in Richtung auf die Kappenachse hin geneigt sind.In addition, as can be seen in particular from FIG. 4, a plurality of spring elements 17, 18 are arranged on the inside of the base 11 of the outer cap 9, which are formed as tabs on the base 11 of the outer cap 9 and are inclined in the direction of the cap axis.

Um eine in der Zeichnung nicht näher dargestellte Flasche kindersicher zu verschließen, wird zunächst die in Fig. 1 dargestellte Innenkappe mit ihrem Innengewinde 2 in üblicher Weise auf das Außengewinde der Flasche aufgeschraubt. Anschließend wird die in Fig. 2 dargestellte Außenkappe 9 so über die Innenkappe 1 gestülpt, daß an der Innenwulst 19 der Außenkappe 9 über dem Außenwulst 3 der Innenkappe 1 liegt, so daß sich die Außenkappe 9 nicht mehr ohne Zuhilfenahme besonderer Werkzeuge von der Innenkappe 1 abziehen läßt. Bei zusammengesteckter Innen- und Außenkappe liegen die kürzeren Innenrippen 10 der Außenkappe 9 oberhalb der längeren Außenrippen 4 der Innenkappe 1, und zwar gegeneinander derart versetzt, daß die Innenrippen 10 der Außenkappe 9 in die zwischen zwei Außenrippen 4 befindliche Nut weisen. Demzufolge liegt auch die Verlängerung 15 jeder Rippe 13 zwischen zwei Ausβenrippen 4 der Innenkappe 1.In order to close a bottle that is not shown in the drawing in a childproof manner, the inner cap shown in FIG. 1 with its internal thread 2 is first screwed onto the external thread of the bottle in the usual way. The outer cap 9 shown in FIG. 2 is then placed over the inner cap 1 so that the inner bead 19 of the outer cap 9 lies over the outer bead 3 of the inner cap 1, so that the outer cap 9 can no longer be removed from the inner cap 1 without the aid of special tools can be deducted. When the inner and outer caps are fitted together, the shorter inner ribs 10 of the outer cap 9 lie above the longer outer ribs 4 of the inner cap 1, and offset from one another in such a way that the inner ribs 10 of the outer cap 9 point into the groove located between two outer ribs 4. Accordingly, the extension 15 of each rib 13 also lies between two outer ribs 4 of the inner cap 1.

Zum Öffnen des Verschlusses wird auf die Außenkappe 9 ein nach unten gerichteter axialer Druck ausgeübt, so daß der Abstand zwischen dem Boden 11 der Außenkappe 9 und dem Boden 5 der Innenkappe 1 kleiner wird. Bei gleichzeitigem Drehen der Außenkappe 9 legen sich die Schrägen 12 der Außenkappe 9 gegen die Schrägen 6 der Innenkappe 1 und übertragen somit das auf die Außenkappe 9 wirkende Dreh moment auf die Innenkappe 1, so daß die Innen kappe 1 abgeschraubt wird.To open the closure, a downward axial pressure is exerted on the outer cap 9, so that the distance between the bottom 11 of the outer cap 9 and the bottom 5 of the inner cap 1 becomes smaller. With simultaneous rotation of the outer cap 9, the bevels 12 of the outer cap 9 lie against the bevels 6 of the inner cap 1 and thus transmit the torque acting on the outer cap 9 to the inner cap 1, so that the inner cap 1 is unscrewed.

Falls auf die Außenkappe 9 kein nach unten gerichteter axialer Druck ausgeübt wird, läßt sich die Außenkappe 9 frei drehen, ohne daß sich die Innenkappe 1 mitdreht. Beim Verdrehen der Außenkappe 9 gegenüber der Innenkappe 1 in der Öffnungs- bzw. Abschraubrichtung rutscht die Verlängerung 15 der Rippe 13 über die Außenrippen 4 der Innenkappe 1 hinweg, ohne diese mitzudrehen.If no downward axial pressure is exerted on the outer cap 9, the outer cap 9 can be freely rotated without the inner cap 1 also rotating. When the outer cap 9 is rotated relative to the inner cap 1 in the opening or unscrewing direction, the extension 15 of the rib 13 slips over the outer ribs 4 of the inner cap 1 without also rotating them.

Es ist jedoch auch möglich, die Innenkappe 1 und die Außenkappe 9 im verriegelten Zustand, d. h. als Baueinheit auf die Flasche aufzudrehen, wenn sich die hohe Kante der Verlängerung 15 der Rippe 13 gegen eine gegenüberliegende Kante einer Außenrippe 4 legt. Dann kann die Innenkappe mittels der Außenkappe 9 fest auf das Flaschengewinde aufgedreht werden.However, it is also possible for the inner cap 1 and the outer cap 9 in the locked state, i.e. H. screw on as a structural unit on the bottle when the high edge of the extension 15 of the rib 13 lies against an opposite edge of an outer rib 4. Then the inner cap can be screwed firmly onto the bottle thread by means of the outer cap 9.

Claims (14)

1. Safety screw closure consisting of an inner cap (1) having an internal thread and of an outer cap (9), fitting over the inner cap with axial spacing and displaceable axially towards the inner cap the purpose of unscrewing, wherein axially oriented external ribs (4) are situated on the inner cap and corresponding internal ribs (10) on the outer cap, the mutually facing surfaces of which ribs slide without axial pressure over one another without contact, characterized in that the external ribs (4) of the inner cap (1) possess, at their ends towards the cap base (5), oblique surfaces (6) inclined downwards in the screwing-up direction in the case of a right-ha.nd thread, and the internal ribs (10) of the outer cap (9) possess, at their ends towards the open end of the outer cap, corresponding inclined surfaces (12) inclined upwards and coming into bearing on the inclined surfaces (6) of the inner cap (1) in the unscrewing direction.
2. Screw closure according to claim 1, characterized in that the inner cap (1) possesses at its open end, an external beading (3), from which the external ribs (4) extend until just before the base (5) of the inner cap (1).
3. Screw closure according to claims 1 or 2, characterized in that the ribs (4) of the inner cap (1) have a rectangular cross-section.
4. Screw closure according to claims 1 or 2, characterized in that the ribs (4) of the inner cap (1) possess a trapezoidal cross-section.
5. Screw closure according to claim 4, characterized in that the surfaces of the ribs (4) of the inner cap (1) which, in the case of a right-hand thread, lie forwards in the screwing-up direction are chamfered in the radial direction.
6. Screw closure according to one or more of claims 1 to 5, characterized in that a peripheral sealing inlay (8) is disposed at the base (5) of the inner cap (1).
7. Screw closure according to one or more of claims 1 to 6, characterized in that the outer cap (9) possesses, at its open end, an internal beading (19), by which it engages over the external beading (3) of the inner cap (1).
8. Screw closure according to one or more of claims 1 to 7, characterized in that the internal ribs (10) of the outer cap (9) are oriented from the cap base (11) toward the open end of the outer cap (9).
9. Screw closure according to one or more of claims 1 to 8, characterized in that the ribs (.10) of the outer cap (9) project from the base (11) of the cap (9).
10. Screw closure according to one or more of claims 1 to 9, characterized in that the ribs (10) of the outer cap (9) have a rectangular, trapezoidal or triangular cross-section.
11. Screw closure according to one or more of claims 1 to 10, characterized in that individual ribs (13) of the outer cap (9) uniformly distributed about the circumference are lengthened and extend to just before the open end of the outer cap (9).
12. Screw closure according to claim 11, characterized in that the lenghtened ribs (13) possess, as far as the height of the other ribs (10), a rectangular cross-section and, in their further extension (15), a triangular cross-section.
13. Screw closure according to one or more of claims 1 to 12, characterized in that the surfaces of the lengthened ribs (13) which, in the case of a right-hand thread, lie forwards in the unscrewing direction are chamfered.
14. Screw closure according to one or more of claims 1 to 13, characterized in that inclined spring elements (17, 18) are disposed internally on the base of the outer cap (11) distributed around the periphery.
EP80104342A 1979-09-27 1980-07-24 Safety screw-cap Expired EP0026284B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792939095 DE2939095A1 (en) 1979-09-27 1979-09-27 SECURITY SCREW CAP
DE2939095 1979-09-27

Publications (2)

Publication Number Publication Date
EP0026284A1 EP0026284A1 (en) 1981-04-08
EP0026284B1 true EP0026284B1 (en) 1984-12-12

Family

ID=6081979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104342A Expired EP0026284B1 (en) 1979-09-27 1980-07-24 Safety screw-cap

Country Status (3)

Country Link
EP (1) EP0026284B1 (en)
AU (1) AU540593B2 (en)
DE (1) DE2939095A1 (en)

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USD1023755S1 (en) 2019-06-03 2024-04-23 Berlin Packaging, Llc Tamper evident closure assembly

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AU585939B2 (en) * 1985-02-04 1989-06-29 Visy Industrial Plastics Pty Ltd Improvements in and relating to closures
US5148931A (en) * 1990-11-21 1992-09-22 Do Le Minh Safety closures for threaded containers
DE4416448C2 (en) * 1994-05-10 2002-02-21 Geka Brush Gmbh Container with a screw cap for nail polish, mascara liquid or the like.
GB0411553D0 (en) * 2004-05-24 2004-06-23 Glaxo Group Ltd A dispenser
DE102007013163B4 (en) 2007-03-20 2013-04-04 Benecke-Kaliko Ag Process for the production of multilayer plastic films
US7988003B1 (en) 2007-07-26 2011-08-02 Rexam Healthcare Packaging Inc. Ratchet push and turn child resistant closure
US8316622B2 (en) 2009-06-10 2012-11-27 Shriji Polymers India Limited Child-resistant cap
USD1014251S1 (en) 2019-06-03 2024-02-13 Berlin Packaging, Llc Tamper evident closure assembly

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USD1023755S1 (en) 2019-06-03 2024-04-23 Berlin Packaging, Llc Tamper evident closure assembly

Also Published As

Publication number Publication date
DE2939095C2 (en) 1988-01-07
AU6205680A (en) 1981-04-02
AU540593B2 (en) 1984-11-29
EP0026284A1 (en) 1981-04-08
DE2939095A1 (en) 1981-04-16

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