EP0316504A2 - One-piece snap closure - Google Patents

One-piece snap closure Download PDF

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Publication number
EP0316504A2
EP0316504A2 EP88100047A EP88100047A EP0316504A2 EP 0316504 A2 EP0316504 A2 EP 0316504A2 EP 88100047 A EP88100047 A EP 88100047A EP 88100047 A EP88100047 A EP 88100047A EP 0316504 A2 EP0316504 A2 EP 0316504A2
Authority
EP
European Patent Office
Prior art keywords
spring hinge
closure
sealing lever
upper side
lever
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.)
Granted
Application number
EP88100047A
Other languages
German (de)
French (fr)
Other versions
EP0316504B1 (en
EP0316504A3 (en
Inventor
Karl-Heinz Rosenthal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Dortmund GmbH
Original Assignee
Bielsteiner Verschlubtechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bielsteiner Verschlubtechnik GmbH filed Critical Bielsteiner Verschlubtechnik GmbH
Priority to AT88100047T priority Critical patent/ATE77328T1/en
Publication of EP0316504A2 publication Critical patent/EP0316504A2/en
Publication of EP0316504A3 publication Critical patent/EP0316504A3/en
Application granted granted Critical
Publication of EP0316504B1 publication Critical patent/EP0316504B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/08—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures
    • B65D47/0804—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage
    • B65D47/0809—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages having articulated or hinged closures integrally formed with the base element provided with the spout or discharge passage and elastically biased towards both the open and the closed positions
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/10—Details of hinged closures
    • B65D2251/1091—Closures made integrally with the base element at a point remote from the hinge

Definitions

  • the invention relates to a one-piece snap lock made of plastic according to the preamble of patent claim 1.
  • Snap locks of this known type are relatively complicated and therefore expensive, both with regard to the tool costs for producing such snap locks in the plastic injection molding process and with regard to the use of materials.
  • the known closures usually have an uneven outer surface, so that they do not always look attractive.
  • the film hinges as storage in the known snap locks are very stable and their function is slightly impaired by the extreme bending of the bearing hinges. In addition, they have protruding parts after opening, which hinder the consumer and the application.
  • the invention is therefore based on the object to improve a snap lock of the known type mentioned so that it represents an extremely stable construction, which after opening does not have the Ver protrudes the final edge and completely covers the mechanism.
  • the function of a snap lock with a spring hinge should not be recognizable, or only barely, but an effective snap lock function by means of the spring hinge is ensured with economical manufacture.
  • the invention solves this problem by the features contained in the characterizing part of patent claim 1.
  • the area-like design of the top of the snap lock with the top of the sealing lever and the spring hinge and the joints connecting these parts makes the snap lock appear like a conventional known cap.
  • the tangential connection of the swivel connection between the sealing lever and the spring hinge on the guide rollers of the sealing lever results in an effective tensioning effect until the dead center position between the open and closed positions is overcome.
  • the compactness of the snap lock means that only a small amount of material is required with a relatively simple tool design.
  • the double-sided roller bearing outside the sealing lever ensures optimal stability of the entire construction. The bearing points are not deformed or bent by operating the snap lock.
  • the spring tension (deflection) can be increased or decreased by changing the guide roller diameter.
  • the opening forces can be changed by changing the spring thickness and / or length. After opening the snap lock, the sealing lever disappears almost completely into the recess of the spring and thus does not form any protruding parts.
  • the features in claim 2 form storage outside the actual sealing lever and ensure a precisely defined and unchangeable pivot point of the system. It is very easy to do that by means of the spring hinge with the sealing underside articulated sealing lever to transfer from its open position due to its manufacture into the normal closed position and to be transferred into this by the engagement of the guide rollers in the upwardly open insertion openings in the support walls on the cover plate of the bottom part of the closure in order to form the top surface of the closure .
  • the bearing surface of the pivot bearings for the guide rollers consists of two semicircular depressions which are open laterally for connecting the spring hinge to the lower closure part, the guide rollers can be locked into their pivot bearings, whereby they are released by the spring hinge into the semicircular recessed pivot bearing surfaces are held.
  • a one-piece snap closure made of plastic with a lower closure part 1 is shown, which can be attached tightly to the neck surrounding the opening of a container (not shown) by means of a part 12 projecting from the underside of a cover plate 11.
  • An opening 13 through the cover plate 11 can be closed by means of a stopper 14 which is arranged on the underside of a sealing lever 3 which is pivotably mounted relative to the lower closure part 1.
  • the sealing lever 3 is connected at a distance above the cover plate 11 to the lower closure part 1 by a spring hinge 2 and can be pivoted between an open and a closed position while overcoming a dead center position 9.
  • the top of the same and the spring hinge 2, which is not tensioned in this position, including the pivot connections 15 and 16 of the latter with the sealing lever 3 and the lower closure part 1 with the closure top 6, are formed with the same area.
  • the equal top surface 6 of the snap closure extends tangentially above two guide rollers 7 of the sealing lever 3, which are connected along a surface line 17 to the pivot connection 15 between the sealing lever 3 and the spring hinge 2 and engage in bearings 18 on the top side of the cover plate 11.
  • the bearings 18 for the guide rollers 7 consist of upwardly open insertion openings 19 in support walls 20 which are arranged on the cover plate 11 of the lower closure part 1. These insertion openings 19 limit the diametrical incision 21 in the closure top 6 for the sealing lever 3 and the spring hinge 2 on both sides of the incision 21.
  • the bearing surface 22 of the pivot bearings 18 for the guide rollers 7 are each semicircular deepened and provided in support walls 23 which are provided transversely to the incision 21 on both sides thereof and the pivot connection 16 between the lower closure part 1 and spring hinge 2 are facing. These support walls 23 form an extension of the incision 21 in the region of the guide rollers 7.
  • the sealing lever 3 is essentially rectangular and together with the spring hinge 2 in the diametrical incision 21 in the closure top 6 together with the guide rollers 7 between the essentially parallel, the incision 21 and the guide rollers 7 delimiting support walls 22, 23 retractable.
  • the length of the sealing lever 3 is dimensioned larger than the length of the spring hinge 2.
  • the pivot connection between the spring hinge 2 and the lower closure part 1 is dimensioned narrower than that with the guide rollers 7, as can be seen from FIG. 2.
  • the snap lock is provided in one piece in plastic by injection molding for flexible or non-deformable containers.
  • the lower closure part 1 can be screwed or shrunk onto the container in such a way that the plug 12 designed as a sealing cone seals the container.
  • the assembly or the completion of the lower closure part 1 and sealing lever 3 are thus already carried out in the tool.
  • the spring hinge 2 with a molded-on sealing lever, in connection with the swivel connection forming a film gate, is folded over and sunk into the cap surface or top side 6 of the closure, as shown in FIG. 3, an area-like closure being formed on the top side 6 of the closure.
  • 4 shows the kinematic rotation sequence of the two guide rollers 7 with an eccentric connection of the spring hinge 2.
  • the spring hinge 2 In the closed position of the sealing lever 3, the spring hinge 2 is untensioned, the lateral guide rollers 7 in the pivot bearings 18 ensuring parallel guidance of the sealing lever 3.
  • the spring hinge 2 bulges outwards in the direction of arrow x, because the tangential articulation point of the pivot connection 15 between spring hinge 2 and sealing lever 3 in FIG. 4 in the clockwise direction is rotated on a swivel circle so that the distance between the joints of the two swivel connections 15 and 16 is reduced and the spring hinge is tensioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Cartons (AREA)
  • Food-Manufacturing Devices (AREA)

Abstract

The one-piece snap closure made of plastic for the opening of a container is provided with a sealing lever (3) above a covering plate provided with an opening, which sealing lever is articulated to a spring hinge (2) which is connected to the upper side of the closure in an articulated manner via a swivel connection (16). The sealing lever (3) and the spring hinge (2) are of approximately rectangular construction and, in the closed position, fill a diametrical incision in the upper side of the closure together with guide cylinders (7) of the swivel connections of the spring hinge (2) in such a way that the upper side of the sealing lever (3) and of the spring hinge are in alignment with the upper side of the closure. The upper side of the closure extends tangentially above two guide cylinders (7) of the sealing lever (3) which are connected eccentrically along a line (17) of the outer surface to the swivel connection (15) between the sealing lever (3) and the spring hinge (2) and engage in insertion openings, which are open upwards, in support walls on the covering plate. In the swivel direction (8), the sealing lever (3) reaches the open position (10) only after overcoming a dead centre position (9), up to which point the spring hinge (2) curves in the direction (x) until it subsequently assumes an unstressed position below the upper side (at 23a). A sturdy closure is thus provided which does not project beyond the closure edge after being opened and completely covers the mechanism so that the function of the spring hinge is not or is hardly recognisable. <IMAGE>

Description

Die Erfindung betrifft einen einteiligen Schnappverschluß aus Kunststoff gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a one-piece snap lock made of plastic according to the preamble of patent claim 1.

Schnappverschlüsse dieser bekannten Bauart sind verhält­nismässig kompliziert und daher aufwendig, und zwar sowohl hinsichtlich der Werkzeugkosten zur Herstellung solcher Schnappverschlüsse im Kunststoffspritzgießverfahren als auch hinsichtlich des Materialeinsatzes. Außerdem haben die bekannten Verschlüsse in der Regel eine ungleich­mässige äußere Oberfläche, so daß sie nicht immer ansprechend aussehen. Die Filmscharniere als Lagerung bei den bekannten Schnappverschlüssen sind sehr stabil und ihre Funktion wird durch die extreme Verbiegung der Lagerscharniere leicht beeinträchtigt. Außerdem haben sie nach dem Öffnen stark vorstehende Teile, die den Verbrau­cher und die Anwendung behindern.Snap locks of this known type are relatively complicated and therefore expensive, both with regard to the tool costs for producing such snap locks in the plastic injection molding process and with regard to the use of materials. In addition, the known closures usually have an uneven outer surface, so that they do not always look attractive. The film hinges as storage in the known snap locks are very stable and their function is slightly impaired by the extreme bending of the bearing hinges. In addition, they have protruding parts after opening, which hinder the consumer and the application.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Schnappverschluß der genannten bekannten Bauart so zu verbessern, daß er eine äußerst stabile Konstruktion darstellt, welche nach dem Öffnen nicht über den Ver­ schlußrand hinausragt und den Mechanismus vollständig abdeckt. Äußerlich soll die Funktion eines Schnappver­schlusses mit Federscharnier nicht oder nur kaum erkennbar sein, wobei aber eine wirksame Schnappverschlußfunktion mittels des Federscharniers bei wirtschaftlicher Herstel­lung gewährleistet ist.The invention is therefore based on the object to improve a snap lock of the known type mentioned so that it represents an extremely stable construction, which after opening does not have the Ver protrudes the final edge and completely covers the mechanism. Externally, the function of a snap lock with a spring hinge should not be recognizable, or only barely, but an effective snap lock function by means of the spring hinge is ensured with economical manufacture.

Die Erfindung löst diese Aufgabe durch die im Kennzeichen des Patentanspruchs 1 enthaltenen Merkmale. Die flächen­gleiche Ausbildung der Oberseite des Schnappverschlusses mit der Oberseite des Dichthebels und des Federscharniers sowie der diese Teile verbindenden Gelenke läßt den Schnappverschluß wie eine übliche bekannte Verschlußkappe erscheinen. Durch die tangentiale Anbindung der Schwenk­verbindung zwischen Dichthebel und Federscharnier an den Führungswalzen des Dichthebels wird eine wirksame Spann­wirkung bis zur Überwindung der Totpunktlage zwischen der Öffnungs- und Schließstellung erreicht. Durch die Kompaktheit des Schnappverschlusses ist nur ein geringer Materialaufwand bei verhältnismässig einfacher Werkzeug­gestaltung erforderlich. Durch die zweiseitige Walzenlage­rung außerhalb des Dichthebels wird eine optimale Stabili­tät der gesamten Konstrukion erreicht. Die Lagerpunkte werden durch Betätigung des Schnappverschlusses nicht deformiert oder verbogen. Durch Veränderung des Führungs­walzendurchmessers kann die Federspannung (Durchbiegung) erhöht bzw. verringert werden. Durch Verändern der Federdicke und/oder -länge können die Öffnungskräfte verändert werden. Nach Öffnen des Schnappverschlusses verschwindet der Dichthebel fast vollständig in der Mulde der Feder und bildet somit keine vorstehenden Teile.The invention solves this problem by the features contained in the characterizing part of patent claim 1. The area-like design of the top of the snap lock with the top of the sealing lever and the spring hinge and the joints connecting these parts makes the snap lock appear like a conventional known cap. The tangential connection of the swivel connection between the sealing lever and the spring hinge on the guide rollers of the sealing lever results in an effective tensioning effect until the dead center position between the open and closed positions is overcome. The compactness of the snap lock means that only a small amount of material is required with a relatively simple tool design. The double-sided roller bearing outside the sealing lever ensures optimal stability of the entire construction. The bearing points are not deformed or bent by operating the snap lock. The spring tension (deflection) can be increased or decreased by changing the guide roller diameter. The opening forces can be changed by changing the spring thickness and / or length. After opening the snap lock, the sealing lever disappears almost completely into the recess of the spring and thus does not form any protruding parts.

Durch die Merkmale in Anspruch 2 wird eine Lagerung außerhalb des eigentlichen Dichthebels gebildet sowie ein genau definierter und nicht veränderbarer Drehpunkt des Systems gewährleistet. Dabei ist es sehr einfach, den durch das Federscharnier mit der Verschlußunterseite gelenkig verbundenen Dichthebel aus seiner herstellungs­bedingt offenen Lage in die normale Schließstellung zu überführen und in dieser durch den Eingriff der Führungs­walzen in die nach oben offenen Einstecköffnungen in den Stützwänden auf der Abdeckplatte des Verschlußunterteils zu überführen, um die Verschlußoberseite flächengleich auszubilden.The features in claim 2 form storage outside the actual sealing lever and ensure a precisely defined and unchangeable pivot point of the system. It is very easy to do that by means of the spring hinge with the sealing underside articulated sealing lever to transfer from its open position due to its manufacture into the normal closed position and to be transferred into this by the engagement of the guide rollers in the upwardly open insertion openings in the support walls on the cover plate of the bottom part of the closure in order to form the top surface of the closure .

Da die Lagerfläche der Schwenklager für die Führungswalzen gemäß Anspruch 3 aus zwei halbkreisförmigen Vertiefungen besteht, die seitlich zur Anbindung des Federscharniers am Verschlußunterteil offen sin<i, läßt sich ein Rasteingriff der Führungswalzen in deren Schwenklager erreichen, wobei lö sie durch das Federscharnier in den halbkreisförmig vertieften Schwenklagerflächen gehalten sind.Since the bearing surface of the pivot bearings for the guide rollers consists of two semicircular depressions which are open laterally for connecting the spring hinge to the lower closure part, the guide rollers can be locked into their pivot bearings, whereby they are released by the spring hinge into the semicircular recessed pivot bearing surfaces are held.

Weitere zweckmässige Ausgestaltungen der Erfindung sind in den Unteransprüchen 4 bis 6 enthalten.Further expedient refinements of the invention are contained in subclaims 4 to 6.

Nachstehend ist die Erfindung anhand der schematischen Zeichnungen eines Ausführungsbeispiels näher beschrieben. Es zeigen:

  • Fig. 1 einen einteiligen Schnappverschluß aus Kunst­stoff in einem Längsschnitt nach Linie I-I in Fig. 2,
  • Fig. 2 eine Draufsicht auf den Schnappverschluß in Fig. 1,
  • Fig. 3 den Schnappverschluß nach Fig. 1, jedoch in geschlossener Stellung und
  • Fig. 4 den Schnappverschluß gemäß Fig. 3 in vergrößer­ter Darstellung mit Phantomdarstellungen des Dichthebels in der oberen Totpunktstellung und der maximalen Öffnungsstellung.
The invention is described in more detail below with reference to the schematic drawings of an exemplary embodiment. Show it:
  • 1 is a one-piece snap lock made of plastic in a longitudinal section along line II in Fig. 2,
  • 2 is a plan view of the snap lock in FIG. 1,
  • Fig. 3 shows the snap lock of Fig. 1, but in the closed position and
  • Fig. 4 shows the snap lock of FIG. 3 in an enlarged view with phantom views of the sealing lever in the top dead center position and the maximum open position.

In den Fig. ist ein einteiliger Schnappverschluß aus Kunststoff mit einem Verschlußunterteil 1 gezeigt, der auf dem die Öffnung eines nicht gezeigten Behälters umgebenden Hals mittels eines von der Unterseite einer Abdeckplatte 11 vorstehenden Teils 12 dicht anbringbar ist. Eine Öffnung 13 durch die Abdeckplatte 11 ist mittels eines Stopfens 14 verschließbar, der an der Unterseite eines gegenüber dem Verschlußunterteil 1 schwenkbar gelagerten Dichthebels 3 angeordnet ist. Der Dichthebel 3 ist im Abstand oberhalb der Abdeckplatte 11 mit dem Verschluß­unterteil 1 durch ein Federscharnier 2 verbunden und unter Überwindung einer Totpunktlage 9 zwischen einer Öffnungs-­und Schließstellung schwenkbar.In the figures, a one-piece snap closure made of plastic with a lower closure part 1 is shown, which can be attached tightly to the neck surrounding the opening of a container (not shown) by means of a part 12 projecting from the underside of a cover plate 11. An opening 13 through the cover plate 11 can be closed by means of a stopper 14 which is arranged on the underside of a sealing lever 3 which is pivotably mounted relative to the lower closure part 1. The sealing lever 3 is connected at a distance above the cover plate 11 to the lower closure part 1 by a spring hinge 2 and can be pivoted between an open and a closed position while overcoming a dead center position 9.

In der in den Fig. 3 und 4 gezeigten Schließstellung des Dichthebels 3 ist die Oberseite desselben sowie des in dieser Stellung ungespannten Federscharniers 2 einschließ­lich der Schwenkverbindungen 15 bzw. 16 des letzteren mit dem Dichthebel 3 und dem Verschlußunterteil 1 mit der Verschlußoberseite 6 flächengleich ausgebildet. Die flä­chengleiche Oberseite 6 des Schnappverschlusses erstreckt sich tangential oberhalb von zwei Führungswalzen 7 des Dichthebels 3, die längs einer Mantellinie 17 an die Schwenkverbindung 15 zwischer Dichthebel 3 und Federschar­nier 2 angebunden sind und in Lager 18 auf der Oberseite der Abdeckplatte 11 eingreifen.In the closed position of the sealing lever 3 shown in FIGS. 3 and 4, the top of the same and the spring hinge 2, which is not tensioned in this position, including the pivot connections 15 and 16 of the latter with the sealing lever 3 and the lower closure part 1 with the closure top 6, are formed with the same area. The equal top surface 6 of the snap closure extends tangentially above two guide rollers 7 of the sealing lever 3, which are connected along a surface line 17 to the pivot connection 15 between the sealing lever 3 and the spring hinge 2 and engage in bearings 18 on the top side of the cover plate 11.

Die Lager 18 für die Führungswalzen 7 bestehen aus nach oben offenen Einstecköffnungen 19 in Stützwänden 20, die auf der Abdeckplatte 11 des Verschlußunterteils 1 angeord­net sind. Diese Einstecköffnungen 19 begrenzen den diametralen Einschnitt 21 in der Verschlußoberseite 6 für den Dichthebel 3 und das Federscharnier 2 an beiden Seiten des Einschnittes 21. Die Lagerfläche 22 der Schwenklager 18 für die Führungswalzen 7 sind jeweils halbkreisförmig vertieft und in Stützwänden 23 vorgesehen, die quer zu dem Einschnitt 21 an beiden Seiten desselben vorgesehen sind und der Schwenkverbindung 16 zwischen Verschlußunterteil 1 und Federscharnier 2 zugekehrt sind. Diese Stützwände 23 bilden eine Erweiterung des Einschnitts 21 im Bereich der Führungswalzen 7.The bearings 18 for the guide rollers 7 consist of upwardly open insertion openings 19 in support walls 20 which are arranged on the cover plate 11 of the lower closure part 1. These insertion openings 19 limit the diametrical incision 21 in the closure top 6 for the sealing lever 3 and the spring hinge 2 on both sides of the incision 21. The bearing surface 22 of the pivot bearings 18 for the guide rollers 7 are each semicircular deepened and provided in support walls 23 which are provided transversely to the incision 21 on both sides thereof and the pivot connection 16 between the lower closure part 1 and spring hinge 2 are facing. These support walls 23 form an extension of the incision 21 in the region of the guide rollers 7.

Wie aus Fig. 2 ersichtlich ist, ist der Dichthebel 3 im wesentlichen rechteckig ausgebildet und zusammen mit dem Federscharnier 2 in dem diametralen Einschnitt 21 in der Verschlußoberseite 6 zusammen mit den Führungswalzen 7 zwischen den im wesentlichen zueinander parallelen, den Einschnitt 21 und die Führungswalzen 7 begrenzenden Stützwänden 22, 23 versenkbar. Dabei ist die Länge des Dichthebels 3 größer bemessen als die Länge des Feder­scharniers 2. Ferner ist die Schwenkverbindung zwischen Federscharnier 2 und Verschlußunterteil 1 schmaler bemes­sen als diejenige mit den Führungswalzen 7, wie aus Fig. 2 ersichtlich ist.As can be seen from FIG. 2, the sealing lever 3 is essentially rectangular and together with the spring hinge 2 in the diametrical incision 21 in the closure top 6 together with the guide rollers 7 between the essentially parallel, the incision 21 and the guide rollers 7 delimiting support walls 22, 23 retractable. The length of the sealing lever 3 is dimensioned larger than the length of the spring hinge 2. Furthermore, the pivot connection between the spring hinge 2 and the lower closure part 1 is dimensioned narrower than that with the guide rollers 7, as can be seen from FIG. 2.

Der Schnappverschluß ist im Spritzgußverfahren aus Kunst­stoff einteilig für flexible oder nicht deformierbare Behälter vorgesehen. Das Verschlußunterteil 1 kann auf den Behälter aufgeschraubt oder geschrumpft werden, derart, daß der als Dichtkonus ausgebildete Stopfen 12 den Behälter abdichtet. Der Zusammenbau bzw. die Komplettie­rung von Verschlußunterteil 1 und Dichthebel 3 werden somit bereits im Werkzeug bewerkstelligt. Das Federschar­nier 2 mit angespritztem Dichthebel wird in Verbindung mit der einen Filmanguß bildenden Schwenkverbindung in die Kappenoberfläche bzw. Verschlußoberseite 6 umgelegt und versenkt, wie Fig. 3 zeigt, wobei ein flächengleicher Abschluß an der Verschlußoberseite 6 gebildet wird. In Fig. 4 ist der kinematische Rotationsablauf der beiden Führungswalzen 7 mit exzentrischer Anbindung des Feder­scharniers 2 veranschaulicht. In geschlossener Stellung des Dichthebels 3 ist das Federscharnier 2 ungespannt, wobei die seitlichen Führungswalzen 7 in den Schwenklagern 18 eine parallele Führung des Dichthebels 3 gewährleisten. Beim Öffnen des Dichthebels 3 aus der in Fig. 4 gezeigten Schließlage in Richtung des Pfeiles 8 wölbt sich das Federscharnier 2 nach außen in Richtung des Pfeiles x, weil der tangentiale Anlenkpunkt der Schwenkverbindung 15 zwischen Federscharnier 2 und Dichthebel 3 in Fig. 4 in Uhrzeigerrichtung auf einem Schwenkkreis verdreht wird, so daß sich der Abstand der Gelenke der beiden Schwenkverbin­dungen 15 und 16 vermindert und das Federscharnier gespannt wird.The snap lock is provided in one piece in plastic by injection molding for flexible or non-deformable containers. The lower closure part 1 can be screwed or shrunk onto the container in such a way that the plug 12 designed as a sealing cone seals the container. The assembly or the completion of the lower closure part 1 and sealing lever 3 are thus already carried out in the tool. The spring hinge 2 with a molded-on sealing lever, in connection with the swivel connection forming a film gate, is folded over and sunk into the cap surface or top side 6 of the closure, as shown in FIG. 3, an area-like closure being formed on the top side 6 of the closure. 4 shows the kinematic rotation sequence of the two guide rollers 7 with an eccentric connection of the spring hinge 2. In the closed position of the sealing lever 3, the spring hinge 2 is untensioned, the lateral guide rollers 7 in the pivot bearings 18 ensuring parallel guidance of the sealing lever 3. When opening the sealing lever 3 from the closed position shown in FIG. 4 in the direction of arrow 8, the spring hinge 2 bulges outwards in the direction of arrow x, because the tangential articulation point of the pivot connection 15 between spring hinge 2 and sealing lever 3 in FIG. 4 in the clockwise direction is rotated on a swivel circle so that the distance between the joints of the two swivel connections 15 and 16 is reduced and the spring hinge is tensioned.

In der Totpunktstellung 9, in die der Dichthebel nach einer Bewegung um etwa 90° aus der Schließstellung gelangt, wird somit die maximale Vorspannkraft des Federscharniers 2 erzielt. Nach Überwindung dieses oberen Totpunktes 9, d.h. nach Überschreiten der kürzesten, strichpunktiert dargestellten Verbindungslinie 23 zwischen der Achse der Führungswalzen 7 und der Gelenkverbindung 16 in Uhrzeigerrichtung wirkt sich die Vorspannung des Federscharniers 2 im Sinne einer beschleunigten Öffnungs­bewegung des Dichthebels 3 aus der Totpunktstellung 9 in die geöffnete Endstellung 10 aus, in der das Federschar­nier 2 in der in Fig. 4 dargestellten gestreckten Lage gezeigt ist, so daß der Dichthebel in dieser äußersten Offenstellung fixiert ist. Der Schließvorgang des Dichthe­bels läuft naturgemäß in umgekehrter Reihenfolge ab.In the dead center position 9, into which the sealing lever moves from the closed position after a movement of approximately 90 °, the maximum pretensioning force of the spring hinge 2 is thus achieved. After overcoming this top dead center 9, i.e. after exceeding the shortest, dash-dotted line 23 between the axis of the guide rollers 7 and the articulated connection 16 in the clockwise direction, the bias of the spring hinge 2 in the sense of an accelerated opening movement of the sealing lever 3 from the dead center position 9 into the open end position 10, in which the Spring hinge 2 is shown in the extended position shown in Fig. 4, so that the sealing lever is fixed in this extreme open position. The closing process of the sealing lever naturally takes place in the reverse order.

Claims (6)

1. Einteiliger Schnappverschluß aus Kunststoff mit einem Verschlußunterteil, der auf dem die Öffnung eines Behälters umgebenden Hals mittels eines von der Unterseite einer Abdeckplatte vorstehenden Teils dicht anbringbar ist, wobei eine Öffnung durch die Abdeckplatte mittels eines Stopfens verschließbar ist, der an der Unterseite eines gegenüber dem Verschlußunterteil schwenkbar gelagerten Dichthebels angeordnet ist, welcher im Abstand oberhalb der Abdeckplatte mit dem Verschlußunterteil durch ein Federscharnier verbunden und unter Überwindung einer Totpunktlage zwischen einer Öffnungs- und Schließ­stellung schwenkbar ist, dadurch gekennzeichnet, daß in Schließstellung des Dichthebels (3) die Oberseite desselben sowie des ungespannten Federscharniers (2) einschließlich der Schwenkverbindungen des letzteren mit dem Dichthebel (3) und dem Verschlußunterteil (1) mit der Verschlußoberseite (6) flächengleich ausge­bildet ist, wobei die flächengleiche Oberseite des Schnappverschlusses sich tangential oberhalb von zwei Führungswalzen (7) des Dichthebels (3) erstreckt, die längs einer Mantellinie an die Schwenkverbindung (15) zwischen Dichthebel (3) und Federscharnier (2) angebunden sind und in Lager (18) auf der Oberseite der Abdeckplatte (11) eingreifen.1. One-piece snap closure made of plastic with a lower closure part which can be fitted tightly on the neck surrounding the opening of a container by means of a part protruding from the underside of a cover plate, an opening through the cover plate being closable by means of a plug which is located on the underside of an opposite the lower locking part is pivotally mounted sealing lever, which is connected at a distance above the cover plate to the lower locking part by a spring hinge and can be pivoted between an open and closed position while overcoming a dead center position, characterized in that in the closed position of the sealing lever (3) the upper side thereof and of the untensioned spring hinge (2), including the pivot connections of the latter with the sealing lever (3) and the lower closure part (1) with the upper closure side (6), with the same surface area of the snap closure t extends angially above two guide rollers (7) of the sealing lever (3), which are connected along a surface line to the swivel connection (15) between the sealing lever (3) and spring hinge (2) and in bearings (18) on the top of the cover plate (11 ) intervene. 2. Verschluß nach Anspruch 1, dadurch gekennzeichnet, daß die Lager (18) für die Führungswalzen (7) aus nach oben offenen Einstecköffnungen (19) in Stützwänden (20) bestehen, die auf der Abdeckplatte (11) des Verschlußunterteils (1) angeordnet sind und den Einschnitt (21) für den Dichthebel (3) und das Federscharnier (2) seitlich begrenzen.2. Closure according to claim 1, characterized in that the bearings (18) for the guide rollers (7) consist of upwardly open insertion openings (19) in support walls (20) which are arranged on the cover plate (11) of the lower closure part (1) are and the incision (21) for the sealing lever (3) and that Limit the spring hinge (2) to the side. 3. Verschluß nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß die Lagerflächen (21) der Schwenk­lager 18) für die Führungswalzen (7) als halbkreis­förmige Vertiefungen an einer Seite der die Einsteck­öffnung (19) begrenzenden Stützwände (22) der Schwenk­verbindung (16) zwischen Verschlußunterteil (1) und Federscharnier (2) zugekehrt sind.3. Closure according to one of claims 1 or 2, characterized in that the bearing surfaces (21) of the pivot bearing 18) for the guide rollers (7) as semicircular depressions on one side of the insertion opening (19) delimiting support walls (22) of the pivot connection ( 16) between the lower closure part (1) and spring hinge (2) are turned. 4. Verschluß nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Dichthebel (3) im wesentlichen rechteckig ausgebildet ist und zusammen mit dem Feder­scharnier (2) in dem diametralen Einschnitt (21) in der Verschlußoberseite (6) zwischen den Stützwänden (22,23) versenkbar ist.4. Closure according to one of claims 1 to 3, characterized in that the sealing lever (3) is substantially rectangular and together with the spring hinge (2) in the diametrical incision (21) in the closure top (6) between the support walls ( 22,23) is retractable. 5. Verschluß nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Länge des Dichthebels (3) größer als die Länge des Federscharniers (2) bemessen ist und beim Öffnen das Federscharnier im wesentlichen abdeckt.5. Closure according to claims 1 to 4, characterized in that the length of the sealing lever (3) is greater than the length of the spring hinge (2) and covers the spring hinge when opening substantially. 6. Verschluß nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Federscharnieranbindung (16) an das Verschlußunterteil (1) schmaler bemessen ist als diejenige an die Führungswalzen (7).6. Closure according to claims 1 to 5, characterized in that the spring hinge connection (16) to the lower closure part (1) is narrower than that of the guide rollers (7).
EP88100047A 1987-11-13 1988-01-04 One-piece snap closure Expired - Lifetime EP0316504B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100047T ATE77328T1 (en) 1987-11-13 1988-01-04 ONE PIECE SNAP CLOSURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873738682 DE3738682A1 (en) 1987-11-13 1987-11-13 ONE-PIECE SNAP LOCK
DE3738682 1987-11-13

Publications (3)

Publication Number Publication Date
EP0316504A2 true EP0316504A2 (en) 1989-05-24
EP0316504A3 EP0316504A3 (en) 1990-03-14
EP0316504B1 EP0316504B1 (en) 1992-06-17

Family

ID=6340484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100047A Expired - Lifetime EP0316504B1 (en) 1987-11-13 1988-01-04 One-piece snap closure

Country Status (7)

Country Link
US (1) US4911337A (en)
EP (1) EP0316504B1 (en)
JP (1) JPH01139351A (en)
AT (1) ATE77328T1 (en)
DE (2) DE3738682A1 (en)
ES (1) ES2033345T3 (en)
ZA (1) ZA88465B (en)

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Also Published As

Publication number Publication date
DE3872177D1 (en) 1992-07-23
EP0316504B1 (en) 1992-06-17
ATE77328T1 (en) 1992-07-15
ES2033345T3 (en) 1993-03-16
EP0316504A3 (en) 1990-03-14
ZA88465B (en) 1988-07-22
US4911337A (en) 1990-03-27
DE3738682A1 (en) 1989-05-24
JPH01139351A (en) 1989-05-31

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