EP0291457A2 - One-piece hinged snap-on cap - Google Patents

One-piece hinged snap-on cap Download PDF

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Publication number
EP0291457A2
EP0291457A2 EP88810296A EP88810296A EP0291457A2 EP 0291457 A2 EP0291457 A2 EP 0291457A2 EP 88810296 A EP88810296 A EP 88810296A EP 88810296 A EP88810296 A EP 88810296A EP 0291457 A2 EP0291457 A2 EP 0291457A2
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EP
European Patent Office
Prior art keywords
hinge
straps
snap
closure according
closed position
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
EP88810296A
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German (de)
French (fr)
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EP0291457B1 (en
EP0291457B2 (en
EP0291457A3 (en
Inventor
Werner F. Dubach
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Medisize Schweiz AG
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Alfatechnic AG
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Application filed by Alfatechnic AG filed Critical Alfatechnic AG
Priority to AT88810296T priority Critical patent/ATE56412T1/en
Publication of EP0291457A2 publication Critical patent/EP0291457A2/en
Publication of EP0291457A3 publication Critical patent/EP0291457A3/en
Publication of EP0291457B1 publication Critical patent/EP0291457B1/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
    • 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
    • B65D47/0814—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 by at least three hinge sections, at least one having a length different from the others

Definitions

  • the present invention relates to a one-piece snap hinge closure made of plastic with a lower part and a cap, both parts each having a jacket wall. In the closed state of the closure, these jacket walls are vertically superimposed on one another.
  • the lower part is connected to the cap by at least one film hinge and by two tensioning straps arranged on either side of the film hinge, which are stretched when the closure is closed.
  • a snap hinge closure of the type mentioned at the outset is known, for example, from EU-PS 0 147 423.
  • the straps of the known solution are usually attached to sprues that are placed on the outer surface and lie in a plane that the art fabric fastener cuts like a secant. Seen from the point of view of the mode of operation, the strength and the closing force, these closures have proven their worth. The aesthetic appearance as well as the workability of the closures in the filling stations were criticized on the market. The above straps occasionally gave rise to blockages on the conveyor line.
  • the material thickness in a strap is approx. 0.5 - 0.8 mm 4 to 5 times larger.
  • a directional orientation of the macromolecules during the spraying process does not take place here. The direction of the forces acting on the tensioning straps is therefore immaterial.
  • the size of the openings in the injection mold determines the the material always flows from the lower part into the cap, the spray cycle time.
  • the lower part of the one-piece snap hinge closure is denoted by 1, the upper part connected to it by 2.
  • the snap hinge is integrated in a lock in the form shown.
  • the snap hinge according to the invention can also be integrated in a packaging which comprises the features of the preamble of patent claim 1. This includes in particular cans and boxes made of plastic, which are formed in one piece.
  • the illustrated embodiment according to the principle of the invention is a closure, in which the lower closure part 1 is attached to a tube T.
  • the upper part 2 is a cap in this case.
  • the two Parts 1 and 2 of the closure are connected to one another via a conventional film hinge 3, which protrudes slightly beyond the peripheral jacket wall.
  • the outer wall 4 of the lower part 1 and the outer wall 5 of the cap and the upper part 2 are vertically one above the other.
  • an indentation 8 is provided in the upper and lower part, which should facilitate the opening of the closure.
  • the two tensioning straps 6 are almost only partially recognizable. They are integrated in the lateral surfaces 4 and 5 in such a way that only the lateral boundaries 7 can still be seen. Apart from slight deviations, the outer surfaces of the tensioning straps 6 are aligned with the outer surfaces of the upper and lower parts 1, 2.
  • FIG. 4 shows the same exemplary embodiment of the snap hinge on the closure according to FIGS. 1-3 in the fully open position on a larger scale.
  • the lower part 1 has a cover surface 9 which rises above the parting plane E of the upper and lower part 1, 2 and has a spout 10 which tapers conically upwards.
  • the straps 6 are in this Unstressed position and form an arch. Since here the tensioning straps are located on the periphery of the curved jacket surfaces, the tensioning straps are curved more strongly in the area closer to the film hinge than the areas further away from the film hinge. Therefore, the tensioning strap is visible in the side view with a double arch. Also in the view according to FIG. 5, which shows a top view of the closure according to FIG.
  • FIG. 7 a section along the line CC in FIG. 5.
  • the niches 11 in which the tensioning straps are attached in which the tensioning straps are attached.
  • the niches in the cap and the upper part 2 do not break through the jacket wall 5, but leave a minimally required wall thickness, so that in the closed state of the closure the upper part and the lower part rest on one another over the entire circumference of the jacket walls. This is of considerable importance because, as is well known, plastic parts charge themselves statically strong.
  • tensioning straps 6 from the starting point in the niches 11 have at least approximately the same cross-sectional area over their entire length.
  • the tapes can be rounded and thickened at the base to create a notch effect avoid.
  • the cross-sectional area remains the same apart from inaccuracies.
  • the cross-sectional shape of the straps 6 can be designed very differently. This is shown by the examples in FIGS. 8a-d. So the outer surface can be adapted exactly to the contour of the jacket wall, but the inner surface can be straight. ( Figure 8a) But in addition to the purely rectangular shape as can be seen in FIG.
  • a convex shape on all sides for example an ellipse as in FIG. 8b, would also be possible.
  • the straps are designed in a U-shape as shown in FIG. 8c, the hinge has an increased snap action.
  • the subdivision of the tensioning straps into several partial straps, as shown in FIG. 8d, allows an even better adaptation of the snap hinge according to the invention to relatively complex shapes of the two parts connected to one another by means of the hinge.
  • the snap hinge according to the invention is realized on a square or polygonal box or box, several film hinges, all lying on a straight line, can be provided on the straight side. Then the hinge according to the invention can also occur several times.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Dowels (AREA)
  • Supports For Pipes And Cables (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Hinges (AREA)

Abstract

A snap hinge closure connects two parts, such as, for example, a lower and an upper part of a closure. Both parts have casing walls which, in the closed position of the hinge, match vertically above one another. On both sides of the film hinge, tension bands are positioned, which, in the closed position, are tensed. The tension bands are held, with their ends, in recesses (11) in the casing walls, and have, over their entire length, an approximately uniform cross section. The outermost surfaces of the tension bands align with the casing external surfaces.

Description

Die vorliegende Erfindung betrifft einen einteiligen Schnappscharnierverschluss aus Kunststoff mit einem Un­terteil und einer Kappe, wobei beide Teile je eine Man­telwand aufweisen. Im geschlossenen Zustand des Ver­schlusses stehen diese Mantelwände deckungsgleich verti­kal übereinander. Der Unterteil ist mit der Kappe über mindestens ein Filmscharnier sowie über zwei je beidseits des Filmscharnieres angeordnete Spannbänder verbunden, die im geschlossenen Zustand des Verschlusses gestreckt sind.The present invention relates to a one-piece snap hinge closure made of plastic with a lower part and a cap, both parts each having a jacket wall. In the closed state of the closure, these jacket walls are vertically superimposed on one another. The lower part is connected to the cap by at least one film hinge and by two tensioning straps arranged on either side of the film hinge, which are stretched when the closure is closed.

Ein Schnappscharnierverschluss der eingangs genannten Art ist beispielsweise aus der EU-PS 0 147 423 bekannt. Die Spannbänder der bekannten Lösung sind üblicherweise an Angüssen befestigt, die auf der äusseren Mantelfläche aufgesetzt sind und in einer Ebene liegen, die den Kunst­ stoffverschluss wie eine Sekante schneidet. Von der Wir­kungsweise, der Festigkeit und der Schliesskraft her ge­sehen haben sich diese Verschlüsse bestens bewährt. Be­mängelt wurden auf dem Markt vorallem das ästhetische Aussehen sowie die Verarbeitbarkeit der Verschlüsse in den Abfüllstationen. Die vorstehenden Spannbänder boten gelegentlich Anlass zu Verstopfungen auf der Förderstrek­ke.A snap hinge closure of the type mentioned at the outset is known, for example, from EU-PS 0 147 423. The straps of the known solution are usually attached to sprues that are placed on the outer surface and lie in a plane that the art fabric fastener cuts like a secant. Seen from the point of view of the mode of operation, the strength and the closing force, these closures have proven their worth. The aesthetic appearance as well as the workability of the closures in the filling stations were criticized on the market. The above straps occasionally gave rise to blockages on the conveyor line.

Eine Lösung für das zweitgenannte Problem ist in der EU-PS 056 469 dargestellt. Hier wird anstelle der Spann­bänder mit seitlich dem Filmscharniergelenk angeordneten Zwischenelementen gearbeitet, die an und für sich dick­wandig sind und über Filmscharniere mit dem Unterteil bzw. der Kappe verbunden sind. Die zur Schnappwirkung er­forderliche Kraft wird hier nicht durch Längsdehnung der Zwischenelemente, sondern durch die Rückformkraft der ge­wölbt geformten Zwischenelemente gebildet. Die beim Oeff­nen und Schliessen des Verschlusses auftretenden Zugkräf­te verlaufen durch die Filmscharniere, an denen die Zwischenelemente mit der Kappe bzw. dem Unterteil verbun­den sind. Das die Schwenkachse bildende Filmscharnier wird beim Oeffnen des Verschlusses gestaucht. Während die Stauchung eines Filmscharniers unproblematisch ist, stellen Zugkräfte über einem Filmscharnier eine grosse Gefahr dar. Verlaufen die Zugkräfte exakt in der Verlauf­richtung senkrecht zur Achse des Filmscharniers, so ist die Widerstandskraft noch relativ gross. Bei einer Schrägstellung der Filmscharniere, wie dies die EU-PS 056 469 verlangt, ist jedoch die vorgenannte korrekte Kraft­einwirkung nicht gewährleistet. Das Resultat ist, dass an den Seiten der Filmscharniere eine Ueberdehnung mit Kerb­wirkung auftritt und die Filmscharniere reissen.
Die Materialdicke im Bereich eines Filmscharniers beträgt lediglich 0,1 - 0,2 mm. Dies führt während des Spritzvor­ganges zu einer Richtungsorientierung der Makromoleküle im Filmscharnierbereich. In Bereichen in denen die Makro­moleküle richtungsorientiert sind, vertragen diese nur geringe Kräfte quer zur Verlaufsrichtung, wie sie in der Ausführung gemäss der obgenannten Erfindung auftreten. Demgegenüber ist die Materialdicke in einem Spannband mit ca. 0,5 - 0,8 mm 4- bis 5fach grösser. Eine Richtungs­orientierung der Makromoleküle beim Spritzvorgang findet hier nicht statt. Die Richtung der Kräfteeinwirkung auf die Spannbänder ist somit unwesentlich. Zudem bestimmt die Grösse der Oeffnungen in der Spritzform, durch die das Material immer vom Unterteil in die Kappe strömt, die Spritztaktzeit.A solution to the second-mentioned problem is presented in EU-PS 056 469. Instead of the tensioning straps, intermediate elements are arranged at the side of the film hinge joint, which are thick-walled per se and are connected to the lower part or the cap via film hinges. The force required for the snap action is not formed here by the longitudinal expansion of the intermediate elements, but by the restoring force of the curved intermediate elements. The tensile forces that occur when opening and closing the closure run through the film hinges on which the intermediate elements are connected to the cap or the lower part. The film hinge forming the pivot axis is compressed when the lock is opened. While the Compression of a film hinge is not a problem, tensile forces over a film hinge pose a great danger. If the tensile forces run exactly in the direction of travel perpendicular to the axis of the film hinge, the resistance is still relatively large. If the film hinges are inclined, as required by EU-PS 056 469, the aforementioned correct force is not guaranteed. The result is that a notch overextension occurs on the sides of the film hinges and the film hinges tear.
The material thickness in the area of a film hinge is only 0.1-0.2 mm. This leads to a directional orientation of the macromolecules in the film hinge area during the spraying process. In areas in which the macromolecules are directionally oriented, they only tolerate small forces transversely to the direction of travel, as occur in the embodiment according to the above-mentioned invention. In contrast, the material thickness in a strap is approx. 0.5 - 0.8 mm 4 to 5 times larger. A directional orientation of the macromolecules during the spraying process does not take place here. The direction of the forces acting on the tensioning straps is therefore immaterial. In addition, the size of the openings in the injection mold determines the the material always flows from the lower part into the cap, the spray cycle time.

Zu den obigen Erkenntnissen ist die Anmelderin durch auf­wendige Messungen und Versuche gelangt und hat sich daher die Aufgabe gestellt, ein Kunststoffscharnier der ein­gangs genannten Art zu schaffen, bei dem Probleme der obengenannten Art vermieden werden können.
Diese Aufgabe löst die Erfindung durch einen Schnapp­scharnierverschluss aus Kunststoff mit den Merkmalen des kennzeichnenden Teiles des Patentanspruches 1.
In den Zeichnungen ist ein Ausführungsbeispiel des Erfin­dungsgegenstandes dargestellt und anhand der nachfolgen­den Beschreibung erläutert.The applicant has attained the above knowledge through complex measurements and tests and has therefore set itself the task of creating a plastic hinge of the type mentioned at the beginning, in which problems of the type mentioned above can be avoided.
The invention solves this problem by a snap hinge closure made of plastic with the features of the characterizing part of patent claim 1.
In the drawings, an embodiment of the subject matter of the invention is shown and explained with reference to the following description.

Es zeigt:

  • Figur 1 den Schnappscharnierverschluss in etwa natürli­cher Grösse auf einer Tube in Ansicht von vorne;
  • Figur 2 in Seitenansicht und
  • Figur 3 in Ansicht auf die Rückseite. In
  • Figur 4 ist derselbe Verschluss in grösserem Masstab in der vollständig geöffneten Spritzlage in Seiten­ansicht und in
  • Figur 5 in Ansicht von oben gesehen, wobei die Kappe von innen erkennbar ist
  • Figur 6 zeigt einen Vertikalschnitt durch die Schwenkach­se des Schnappscharniers entlang der Linie B - B in Figur 5 und
  • Figur 7 einen Teilschnitt entlang der Linie C - C in Figur 5.
  • Figur 8 a - d zeigt verschiedene Querschnittsformen der Spannbänder.
It shows:
  • Figure 1 shows the snap hinge closure in approximately natural size on a tube in front view;
  • Figure 2 in side view
  • Figure 3 in view of the back. In
  • Figure 4 is the same closure on a larger scale in the fully open spray position in side view and in
  • 5 seen in a view from above, the cap being recognizable from the inside
  • FIG. 6 shows a vertical section through the pivot axis of the snap hinge along the line BB in FIG. 5 and
  • 7 shows a partial section along the line C - C in FIG. 5.
  • Figure 8 a - d shows different cross-sectional shapes of the straps.

In der Zeichnung ist der Unterteil des einteiligen Schnappscharnierverschlusses mit 1, der damit verbundene Oberteil mit 2 bezeichnet. Das Schnappscharnier ist in der dargestellten Form in einem Verschluss integriert. Es ist aber selbstverständlich, dass das erfindungsgemässe Schnappscharnier auch in einer Verpackung integriert sein kann, welche die Merkmale des Oberbegriffes des Patentan­spruches 1 umfasst. Hierzu gehören insbesondere Dosen und Schachteln aus Kunststoff, die einstückig geformt sind. Das dargestellte Ausführungsbeispiel nach dem erfindungs­gemässen Prinzip ist ein Verschluss, bei dem der Ver­schlussunterteil 1 auf einer Tube T befestigt ist. Der Oberteil 2 ist in diesem Falle eine Kappe. Die beiden Teile 1 und 2 des Verschlusses sind über ein übliches, leicht über die Umfangsmantelwand hinausragendes Film­scharnier 3 miteinander verbunden. Die Mantelwand 4 des Unterteiles 1 und die Mantelwand 5 der Kappe, bzw. des Oberteiles 2 stehen vertikal übereinander. Dem Film­scharnier gegenüberliegend ist im Ober- und Unterteil eine Einbuchtung 8 angebracht, die das Oeffnen des Ver­schluss erleichtern soll. Links und rechts des Film­scharniers 3 sind fast nur noch ansatzweise die beiden Spannbänder 6 erkennbar. Sie sind so in den Mantelflächen 4 und 5 integriert, dass lediglich noch die seitlichen Begrenzungen 7 erkennbar sind. Die Aussenflächen der Spannbänder 6 fluchten von geringfügigen Abweichungen ab­gesehen mit den Mantelflächen des Ober- bzw. Unterteiles 1, 2.In the drawing, the lower part of the one-piece snap hinge closure is denoted by 1, the upper part connected to it by 2. The snap hinge is integrated in a lock in the form shown. However, it goes without saying that the snap hinge according to the invention can also be integrated in a packaging which comprises the features of the preamble of patent claim 1. This includes in particular cans and boxes made of plastic, which are formed in one piece. The illustrated embodiment according to the principle of the invention is a closure, in which the lower closure part 1 is attached to a tube T. The upper part 2 is a cap in this case. The two Parts 1 and 2 of the closure are connected to one another via a conventional film hinge 3, which protrudes slightly beyond the peripheral jacket wall. The outer wall 4 of the lower part 1 and the outer wall 5 of the cap and the upper part 2 are vertically one above the other. Opposed to the film hinge, an indentation 8 is provided in the upper and lower part, which should facilitate the opening of the closure. Left and right of the film hinge 3, the two tensioning straps 6 are almost only partially recognizable. They are integrated in the lateral surfaces 4 and 5 in such a way that only the lateral boundaries 7 can still be seen. Apart from slight deviations, the outer surfaces of the tensioning straps 6 are aligned with the outer surfaces of the upper and lower parts 1, 2.

In der Figur 4 ist dasselbe Ausführungsbeispiel des Schnappscharniers am Verschluss gemäss den Figuren 1 - 3 in der vollständig geöffneten Stellung in einem grösseren Massstab gezeigt. Der Unterteil 1 hat eine Deckfläche 9, die sich über die Trennebene E des Ober- und Unterteiles 1, 2 erhebt und einen konisch nach oben zulaufenden Ausguss 10 aufweist. Die Spannbänder 6 sind in dieser Stellung ungespannt und bilden einen Bogen. Da hier die Spannbänder auf der Peripherie der gewölbten Mantelflä­chen liegen, werden die Spannbänder im Bereich näher dem Filmscharnier stärker gewölbt als die weiter vom Film­scharnier entfernten Bereiche. Daher ist das Spannband in der Seitenansicht doppelt gewölbt sichtbar. Auch in der Ansicht nach Figur 5, die eine Aufsicht auf den Ver­schluss gemäss Figur 4 zeigt, erkennt man, dass der Radi­us der in dieser Stellung des Scharniers bogenförmigen Spannbänder 6 näher dem Filmscharnier 3 kleiner und ent­fernter vom Filmscharnier 3 grösser ist. Im Detail ist dies in Figur 7, einem Schnitt entlang der Linie C - C in Figur 5, dargestellt.
In dieser Darstellung nach Figur 5, in der man den Ober­teil, bzw. die Kappe von unten bzw. von innen und den Unterteil von oben erkennt, sieht man auch die Nischen 11, in denen die Spannbänder angebracht sind. Die Nischen in der Kappe, bzw. dem Oberteil 2 durchbrechen die Man­telwand 5 nicht, sondern lassen eine minimal erforderli­che Wandstärke bestehen, so dass im geschlossenen Zustand des Verschlusses Oberteil und Unterteil über dem gesamten Umfang der Mäntelwände aufeinander aufliegen. Dies ist von erheblicher Bedeutung, weil bekanntlich Kunststoff­ teile sich statisch stark aufladen. In der Folge werden Staubteile bei einem nicht vollständig schliessenden Ver­schluss magnetisch durch eventuelle Schlitze ins Innere gezogen und führen zu einer sichtbaren Verschmutzung. Die Bodenflächen der Nischen 11 können parallel oder ge­neigt zur Trennebene E verlaufen. Dabei müssen natürlich die Spannbänder 6 je weiter sie von der Schwenkachse, nämlich dem Filmscharnier 3 weg sind, umso länger sein. Folglich verlaufen die Nischenböden von dem vom Film­scharnier entfernteren Ende von unten zu dem vom Film­scharnier näheren, oberen Ende. In der Figur 6, einem Schnitt durch den offenen Verschluss in der Vertikalen durch das Filmscharnier, sind die Nischenböden punktiert eingetragen, obwohl sie in dieser Ansicht natürlich nicht sichtbar sind.FIG. 4 shows the same exemplary embodiment of the snap hinge on the closure according to FIGS. 1-3 in the fully open position on a larger scale. The lower part 1 has a cover surface 9 which rises above the parting plane E of the upper and lower part 1, 2 and has a spout 10 which tapers conically upwards. The straps 6 are in this Unstressed position and form an arch. Since here the tensioning straps are located on the periphery of the curved jacket surfaces, the tensioning straps are curved more strongly in the area closer to the film hinge than the areas further away from the film hinge. Therefore, the tensioning strap is visible in the side view with a double arch. Also in the view according to FIG. 5, which shows a top view of the closure according to FIG. 4, it can be seen that the radius of the tensioning straps 6, in this position of the hinge, closer to the film hinge 3 is smaller and more distant from the film hinge 3. This is shown in detail in FIG. 7, a section along the line CC in FIG. 5.
In this illustration according to FIG. 5, in which the upper part or the cap can be seen from below or from the inside and the lower part from above, one can also see the niches 11 in which the tensioning straps are attached. The niches in the cap and the upper part 2 do not break through the jacket wall 5, but leave a minimally required wall thickness, so that in the closed state of the closure the upper part and the lower part rest on one another over the entire circumference of the jacket walls. This is of considerable importance because, as is well known, plastic parts charge themselves statically strong. As a result, dust particles are magnetically drawn through possible slits in the event of a closure that does not close completely and lead to visible contamination. The bottom surfaces of the recesses 11 can run parallel or inclined to the parting plane E. Of course, the straps 6 must be the longer they are from the pivot axis, namely the film hinge 3, the longer. Consequently, the niche floors run from the end farther away from the film hinge from below to the upper end closer to the film hinge. In FIG. 6, a section through the open closure in the vertical through the film hinge, the niche floors are shown in dotted lines, although of course they are not visible in this view.

Einen wesentlichen Unterschied zwischen den Spannbändern, wie sie in dieser Erfindung angewendet werden, und den Zwischenelementen gemäss dem Stand der Technik ist, dass die Spannbänder 6 vom Ansatzpunkt in den Nischen 11 über ihre gesamte Länge mindestens annähernd die gleiche Quer­schnittsfläche aufweisen. Zwar können die Bänder am An­satz gerundet und verdickt sein, um eine Kerbwirkung zu vermeiden. Im dem Bereich jedoch, der zur erforderlichen elastischen Längsdehnung führt, bleibt die Querschnitts­fläche von Ungenauigkeiten abgesehen gleich.
Die Querschnittsform der Spannbänder 6 kann sehr unter­schiedlich gestaltet werden. Dies zeigen die Beispiele der Figuren 8a - d. So kann die Aussenfläche exakt der Kontur der Mantelwand angepasst, jedoch die Innenfläche gerade sein. (Figur 8a)
Aber neben der rein rechteckigen Form wie in Figur 6 er­sichtlich, wäre auch eine allseitig konvexe Form, bei­spielsweise eine Ellipse wie in Figur 8b möglich. Gestal­tet man die Bänder u-förmig wie in Figur 8c gezeigt, so erhält man eine verstärkte Schnappwirkung des Scharniers. Die Unterteilung der Spannbänder in mehrere Teilbänder wie dies Figur 8d zeigt, erlaubt eine noch bessere An­passung des erfindungsgemässen Schnappscharniers an rela­tiv komplex gestaltete Formen der beiden mittels dem Scharnier miteinander verbundenen Teile. Wird das erfin­dungsgemässe Schnappscharnier an einer vier- oder mehr­eckigen Schachtel oder Dose verwirklicht, so können an der geraden Seite mehrere Filmscharniere, die alle auf einer geraden Linie liegen, vorgesehen sein. Dann kann auch das erfindungsgemässe Scharnier mehrmals vorkommen.An essential difference between the tensioning straps as used in this invention and the intermediate elements according to the prior art is that the tensioning straps 6 from the starting point in the niches 11 have at least approximately the same cross-sectional area over their entire length. The tapes can be rounded and thickened at the base to create a notch effect avoid. However, in the area that leads to the required elastic longitudinal expansion, the cross-sectional area remains the same apart from inaccuracies.
The cross-sectional shape of the straps 6 can be designed very differently. This is shown by the examples in FIGS. 8a-d. So the outer surface can be adapted exactly to the contour of the jacket wall, but the inner surface can be straight. (Figure 8a)
But in addition to the purely rectangular shape as can be seen in FIG. 6, a convex shape on all sides, for example an ellipse as in FIG. 8b, would also be possible. If the straps are designed in a U-shape as shown in FIG. 8c, the hinge has an increased snap action. The subdivision of the tensioning straps into several partial straps, as shown in FIG. 8d, allows an even better adaptation of the snap hinge according to the invention to relatively complex shapes of the two parts connected to one another by means of the hinge. If the snap hinge according to the invention is realized on a square or polygonal box or box, several film hinges, all lying on a straight line, can be provided on the straight side. Then the hinge according to the invention can also occur several times.

Claims (10)

1. Einteiliger Schnappscharnierverschluss aus Kunst­stoff mit einem Unterteil (1) und einem Oberteil (2), die je eine Mantelwand (4, 5) aufweisen, wobei diese beiden Mantelwände (4, 5) in der Schliessstel­lung des Scharnieres deckungsgleich vertikal über­einander stehen, und wobei der Unterteil (1) mit dem Oberteil (2) über mindestens ein Filmscharnier (3), sowie über zwei beidseits des Filmscharnieres (3) angeordnete Spannbänder (6), die in der Schliess­stellung des Scharniers gestreckt sind, miteinander verbunden ist, dadurch gekennzeichnet, dass die Spannbänder (6) in Nischen (11) in den Mantelwänden (4, 5) angeordnet sind, über ihre gesamte Länge min­destens annähernd einen gleichbleibenden Querschnitt aufweisen und in Schliesslage mit ihren äussersten Teilflächen mit den Mantelaussenwänden fluchten.1. One-piece snap hinge closure made of plastic with a lower part (1) and an upper part (2), each having a jacket wall (4, 5), these two jacket walls (4, 5) standing congruently vertically one above the other in the closed position of the hinge, and the lower part (1) being connected to the upper part (2) by at least one film hinge (3) and by two tensioning straps (6) arranged on both sides of the film hinge (3), which are stretched in the closed position of the hinge, characterized in that that the tensioning straps (6) are arranged in niches (11) in the jacket walls (4, 5), have at least approximately a constant cross-section over their entire length and, in the closed position, align their outermost partial surfaces with the jacket outer walls. 2. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Ansätze der Spannbänder (6) in den Nischenbodenflächen gerundet angeformt sind.2. snap hinge closure according to claim 1, characterized in that the approaches of the tensioning straps (6) are integrally formed in the niche bottom surfaces. 3. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Ansätze der Spannbänder (6) in ebenen Nischenbodenflächen parallel zur Schwenk­achse des Filmscharniers (3) verlaufen.3. snap hinge closure according to claim 1, characterized in that the approaches of the straps (6) in flat niche floor surfaces parallel to the pivot axis of the film hinge (3). 4. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die vertikalen Mantelwände (4, 5) eine gerundete Form aufweisen, und dass lediglich ein Filmscharnier (3) vorgesehen ist, an dem zwei streifenförmige, je beidseitig des Scharniers ange­ordnete Spannbänder (6) verlaufen, wobei die Ansätze der Spannbänder auf Nischenbodenflächen zur Schwenk­achse des Filmscharniers geneigt angeordnet sind, so dass die dem Filmscharnier (3) näher liegenden Sei­ten der streifenförmigen Spannbänder (6) kürzer als die entfernteren Seiten sind.4. snap hinge closure according to claim 1, characterized in that the vertical jacket walls (4, 5) have a rounded shape, and that only a film hinge (3) is provided, on which two strip-shaped, each arranged on both sides of the hinge straps (6) , The lugs of the tensioning straps on niche floor surfaces being arranged inclined to the pivot axis of the film hinge, so that the sides of the strip-shaped tensioning straps (6) closer to the film hinge (3) are shorter than the more distant sides. 5. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Nischen (11) mindestens an­nähernd der Form und Grösse der gestreckten Spann­bänder (6) entsprechen, sodass diese in der Schliessstellung des Scharniers vollständig in den Nischen (11) Aufnahme finden und diese abdecken.5. snap hinge closure according to claim 1, characterized in that the niches (11) correspond at least approximately to the shape and size of the stretched tensioning straps (6), so that these are fully accommodated in the niches (11) in the closed position of the hinge and cover them. 6. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Mantelinnenwand des Ober­teils (2) vollständig geschlossen ist und in der Schliessstellung des Scharniers über den gesamten Umfang auf dem Unterteil (1) aufliegt.6. snap hinge closure according to claim 1, characterized in that the inner jacket wall of the upper part (2) is completely closed and rests on the lower part (1) over the entire circumference in the closed position of the hinge. 7. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Querschnittsform der Spann­bänder (6) mindestens annähernd einem flachen Recht­eck entspricht.7. snap hinge closure according to claim 1, characterized in that the cross-sectional shape of the straps (6) corresponds at least approximately to a flat rectangle. 8. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Querschnittsform der Spann­bänder mindestens einseitig konvex ist.8. snap hinge closure according to claim 1, characterized in that the cross-sectional shape of the straps is convex at least on one side. 9. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Querschnittsform der Spann­bänder u-förmig ist.9. snap hinge closure according to claim 1, characterized in that the cross-sectional shape of the straps is U-shaped. 10. Schnappscharnierverschluss nach Anspruch 1, dadurch gekennzeichnet, dass die Spannbänder (6) in mehrere parallele Teilbänder (6) unterteilt sind.10. snap hinge closure according to claim 1, characterized in that the tensioning straps (6) are divided into a plurality of parallel sub-straps (6).
EP88810296A 1987-05-13 1988-05-05 One-piece hinged snap-on cap Expired - Lifetime EP0291457B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810296T ATE56412T1 (en) 1987-05-13 1988-05-05 ONE PIECE SNAP HINGE CLOSURE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1834/87A CH672771A5 (en) 1987-05-13 1987-05-13
CH1834/87 1987-05-13

Publications (4)

Publication Number Publication Date
EP0291457A2 true EP0291457A2 (en) 1988-11-17
EP0291457A3 EP0291457A3 (en) 1989-11-15
EP0291457B1 EP0291457B1 (en) 1990-09-12
EP0291457B2 EP0291457B2 (en) 1997-11-26

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ID=4219686

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EP88810296A Expired - Lifetime EP0291457B2 (en) 1987-05-13 1988-05-05 One-piece hinged snap-on cap

Country Status (12)

Country Link
US (1) US4854473A (en)
EP (1) EP0291457B2 (en)
JP (1) JP2680035B2 (en)
AT (1) ATE56412T1 (en)
AU (1) AU609810B2 (en)
CA (1) CA1303521C (en)
CH (1) CH672771A5 (en)
DE (1) DE3860595D1 (en)
DK (1) DK164036C (en)
ES (1) ES2017801T5 (en)
IL (1) IL86250A (en)
ZA (1) ZA883295B (en)

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EP0608755A1 (en) * 1990-07-27 1994-08-03 Yoshino Kogyosho Co., Ltd. Cap with resiliently reversing lid
EP0590325A3 (en) * 1992-09-26 1995-01-25 Finke Robert Gmbh Sealing cap with snap-in hinge.
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EP1790581A3 (en) * 2005-11-24 2007-08-15 Weener Plastik AG Hinged closure
WO2020007465A1 (en) * 2018-07-04 2020-01-09 Weener Plastik Gmbh Flap closure
RU2773673C1 (en) * 2018-07-04 2022-06-07 Венер Пластик Гмбх Flap cap

Also Published As

Publication number Publication date
EP0291457B1 (en) 1990-09-12
ES2017801T5 (en) 1998-03-16
ATE56412T1 (en) 1990-09-15
DK244288D0 (en) 1988-05-05
IL86250A (en) 1992-02-16
JP2680035B2 (en) 1997-11-19
AU609810B2 (en) 1991-05-09
CH672771A5 (en) 1989-12-29
DK244288A (en) 1988-11-14
AU1560788A (en) 1988-11-17
JPS63317467A (en) 1988-12-26
DE3860595D1 (en) 1990-10-18
DK164036C (en) 1992-09-28
US4854473B1 (en) 1991-10-15
ES2017801B3 (en) 1991-03-01
EP0291457B2 (en) 1997-11-26
US4854473A (en) 1989-08-08
CA1303521C (en) 1992-06-16
EP0291457A3 (en) 1989-11-15
DK164036B (en) 1992-05-04
ZA883295B (en) 1988-11-14
IL86250A0 (en) 1988-11-15

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