WO2009146567A1 - Tamper-proof device for threaded closure for container - Google Patents

Tamper-proof device for threaded closure for container Download PDF

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Publication number
WO2009146567A1
WO2009146567A1 PCT/CH2009/000179 CH2009000179W WO2009146567A1 WO 2009146567 A1 WO2009146567 A1 WO 2009146567A1 CH 2009000179 W CH2009000179 W CH 2009000179W WO 2009146567 A1 WO2009146567 A1 WO 2009146567A1
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WO
WIPO (PCT)
Prior art keywords
neck
cap
integral
abutment face
face
Prior art date
Application number
PCT/CH2009/000179
Other languages
French (fr)
Inventor
Jean-Denis Rochat
Original Assignee
Jean-Denis Rochat
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
Priority claimed from EP08405162A external-priority patent/EP2105386A1/en
Application filed by Jean-Denis Rochat filed Critical Jean-Denis Rochat
Publication of WO2009146567A1 publication Critical patent/WO2009146567A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • B65D41/3404—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with ratchet-and-pawl mechanism between the container and the closure skirt or the tamper element
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • B65D2401/20—Frangible elements completely enclosed in closure skirt

Definitions

  • the present invention relates to a tamper-proof device for container screw closure comprising a closure cap screwed onto a neck of the container having at least one screw thread and a latching system comprising at least one abutment face integral with the neck and at least one resilient snatch bulge integral with the stopper and whose minimum radial distance from the axis of revolution of the neck is less than the outer radius of the abutment face and ends with an abutment face whose angular position is chosen for that in the screwed position of the plug, the integral abutment faces of the neck, respectively of the plug are located opposite each other, to oppose the unscrewing of the plug.
  • the current screw plugs are conventionally formed of a cylindrical skirt provided on its inner face with a screw thread intended to cooperate with the screw thread complementary to the neck of the bottle.
  • the base of the skirt is extended by an infra-redness ring which is connected to the skirt by bridges of low tensile strength.
  • the tamper evident ring represents approximately 20% of the plug mass of the order of 2.2 gr, while the material of the bottle dedicated to the placement and retention of this ring represents 1.2 gr / bottle or 4% to 8% of the mass of the bottle.
  • the present invention provides a means for making material gains while retaining the tamper-proof feature.
  • the plastic material used by the ring tamper device represents several thousand tons per year.
  • the elastic latching system is located below the thread so that it occupies the place usually taken by the detachable tamper-evident ring and does not allow to achieve substantial savings in material, neither in the cork nor in the bottle.
  • the elastic latching device is located above the threads. The stops integral with the neck of the container being above the screw threads, the angular length of the screw threads can not exceed the spaces between these stops, otherwise the threads of the cap could not be engaged with the steps of screw of the neck.
  • the joint angular length of the threads can not exceed 180.degree.
  • the spaces separating the abutments integral with the neck must also correspond to the respective lengths of the screw threads secured to the neck, each screw pitch of the plug. extending under the respective screw threads of the neck in the closed position of the cap.
  • Such a solution seriously penalizes the pressure resistance of the closure and is in any case not acceptable for a container to be held to the pressure, such as a stopper for carbonated drink.
  • the object of the present invention is to provide the same advantages as the screw caps provided with tamper-proof rings, but by saving the plastic material.
  • this invention relates to a tamper-proof device for container screw closure as defined by claim 1.
  • the proposed solution is both economical and environmentally friendly, reducing waste and consumption of petroleum-based products.
  • the removal of the tamper-evident ring facilitates the work of recovering the plastic bottles, since it is no longer necessary to remove the tamper-evident ring from the neck of the colored PE bottle for receipt. puncture the plastic of the bottle, usually in transparent PET.
  • Figure 1 is a perspective view of the cap seen from below;
  • Figure 2 is a perspective view of the neck of the container to be closed by the cap of Figure 1;
  • Figure 3 is a partial sectional view perpendicular to the axis of revolution of the neck and the plug of these two elements in the assembled position;
  • Figure 4 is a view similar to Figure 3, after breaking the tamper device;
  • Figure 5 is a view similar to Figure 3, when the cap is screwed the first time;
  • Figure 6 is a partial perspective view with cutaway of a container closed by a plug according to a second embodiment;
  • Figure 7 is a perspective view from below of the plug alone;
  • Figure 8 is a partial sectional view along VII-VII of Figure 5;
  • Figure 9 is a view similar to Figure 8 showing the deformation of the tamper device and the breaking of a weakened part when opening the cap;
  • Figure 10 is a view similar to Figure 8 comprising a plastic deformation member in place of a breaker member;
  • FIGS. 1 and 2 respectively illustrate the screw cap 1 and the neck 2 of a container 3, in particular a bottle and in particular a PET bottle, intended to receive the screw cap and having at least one thread for this purpose.
  • screw 4 On its side the inner face of the cylindrical side wall 5 or the skirt of the cap 1 has as many screw threads 6 as the neck 2, intended to engage under the respective screw threads 4 of the neck 2.
  • screw threads Up to 4 preferably, which limits the screwing angle of the plug.
  • the number of threads is three on the neck 2 and obviously on the inner face of the skirt 5 of the cap 1.
  • the threads 4 of the neck 2 are normal threads whose exit end face 7 is shaped stop.
  • this end face 7 makes a right angle with the tangent to a circle centered on the axis of revolution of the neck 2 and passing through the intersection between this circle and the end face 7.
  • This end face 7 could obviously also make an acute angle with this tangent, as will be understood from reading the rest of the description.
  • the skirt or side wall 5 of the cap 1 comprises, in this example, three resilient snap-fastening elements 9 having an abutment face 8 which makes a right angle with the tangent to a circle centered on the axis of revolution of the skirt or lateral wall 5 and passing through the intersection between this circle and the abutment face 8.
  • This abutment face 8 could also make an acute angle with this tangent, preferably complementary to the acute angle of the end face 7 of the thread. screw 4 of the neck 2.
  • This abutment face 8 is situated at the end of an inwardly bulging part of a first resilient snap-fastening element 9 and is attached to the side wall 5 of the stopper 1 by at least one rupture element at the traction or tensile plastic elongation element 10.
  • the bulge of each resilient snap element 9 is located in the triangular or trapezoidal space available between the screw threads and the base of the skirt 5 of the plug 1.
  • the end of the snap elastic element 9 opposite to the abutment 8 is articulated to a hinge element 11 by a first weakening 12, formed by a sudden thinning of the wall which extends parallel to the generatrix of the cylindrical side wall 5.
  • This hinge element 11 is itself connected to the side wall 5 by a second weakening 13 also formed by a sudden thinning which also extends parallel to the generatrix of the cylindrical side wall 5 of the plug 1.
  • These two weakenings 12 and 13 form hinges between the elastic snap-fastening element 9 and the articulation element 11.
  • the inner face of the elastic detent element 9 gradually thickens from the first weakening 12 to the abutment face 8.
  • the smallest radius between this thickening of the wall of the elastic locking element 9 and the axis of revolution of the neck 2 once the cap 1 screwed onto the neck 2 is chosen to be smaller than the outer radius of the screw threads 4 of the neck 2.
  • the threaded portion 4 of the neck 2 terminates in a flat annular portion 14.
  • any rotation of the stopper 1 in the counterclockwise direction from the position illustrated in FIG. 3 collides with the meeting of the two abutment faces. Given their radial orientation, or even their acute angles, these abutment faces offer a real advantage. resistance to unscrewing of the plug 1. This resistance corresponds to the tensile strength of the tensile breaking element 10. As soon as a screwing force is applied to the plug 1, exceeding the breaking strength of the element 10, it breaks, allowing the elements 9, 11 to move visibly in the position illustrated in Figure 4, wherein the abutment face 8 is spaced from the end stop face 7, allowing the unscrewing of the plug 1 .
  • the second embodiment illustrated in Figures 6 to 11 differs from the first essentially by the shape of the tamper device.
  • the latter comprises a resilient snap-fastening element 29 whose inner face gradually thickens and ends with an abutment surface 28 which faces the abutment surface 27 formed at the end of the thread. screw 24 formed on the outer face of the neck 22.
  • the snap elastic member 29 has the shape of a right triangle whose hypotenuse is connected to the skirt 25 of the stopper 21 by a weakened portion 30.
  • This right-angled triangle forming the snap-fastening elastic element 29 is adjacent to a second identical right triangle forming the hinge member 31, the hypotenuse of which is connected to the skirt 25 of the stopper 21 by a weakened portion 33 intended to allow the articulation of the hypotenuse of the hinge member 31 with the skirt 25 of the cap 21.
  • the two adjacent sides of the latching elements 29 and articulation 31 are also in a weakened part 32 intended to allow the articulation between the coupling element 29 and the articulation element 31.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

This device comprises a cap (2) screwed onto a neck, (1) that has at least one screw thread (4) and a snap-fastening system comprising an abutment face (7) integral with the neck and a resilient snap-fastening enlargement (9) integral with the cap (2) and whose shortest radial distance from the axis of revolution of the neck (1) is less than the outside radius of the abutment face (7) and that ends in an abutment face (8). When the cap (2) is screwed on, the abutment faces (7, 8), one integral with the neck and the other with the cap are face to face to resist the unscrewing of the cap (2). The abutment face (7) integral with the neck (1) is a terminal screw thread runout face (7). The resilient enlargement (9) is positioned, when the cap is screwed on, in the open space which follows the terminal screw thread runout end (7), within the height of the pitch of the thread.

Description

DISPOSITIF INVIOIABLE POUR FERMETURE A VIS DE RECIPIENT INVIOIABLE DEVICE FOR CONTAINER SCREW CLOSURE
La présente invention se rapporte à un dispositif inviolable pour fermeture à vis de récipient comportant un bouchon de fermeture vissé sur un goulot du récipient présentant au moins un filet de vis et un système d' encliquetage comprenant au moins une face de butée solidaire du goulot et au moins un renflement élastique d' encliquetage solidaire du bouchon et dont la distance radiale minimum de l'axe de révolution du goulot est inférieure au rayon externe de la face de butée et se termine par une face de butée dont la position angulaire est choisie pour qu'en position vissée du bouchon, les faces de butées solidaires du goulot, respectivement du bouchon se situent l'une en face de l'autre, pour s'opposer au dévissage du bouchon.The present invention relates to a tamper-proof device for container screw closure comprising a closure cap screwed onto a neck of the container having at least one screw thread and a latching system comprising at least one abutment face integral with the neck and at least one resilient snatch bulge integral with the stopper and whose minimum radial distance from the axis of revolution of the neck is less than the outer radius of the abutment face and ends with an abutment face whose angular position is chosen for that in the screwed position of the plug, the integral abutment faces of the neck, respectively of the plug are located opposite each other, to oppose the unscrewing of the plug.
Les bouchons à vis actuels sont classiquement formés d'une jupe cylindrique pourvue sur sa face interne d'un pas de vis destiné à coopérer avec le pas de vis complémentaire du goulot de la bouteille. La base de la jupe est prolongée par une bague d' in- violabilité qui est relié à la jupe par des pontets de faible résistance à la traction mécanique.The current screw plugs are conventionally formed of a cylindrical skirt provided on its inner face with a screw thread intended to cooperate with the screw thread complementary to the neck of the bottle. The base of the skirt is extended by an infra-redness ring which is connected to the skirt by bridges of low tensile strength.
La bague d'inviolabilité représente environs 20% de la masse du bouchon de l'ordre de 2.2 gr, tandis que la matière de la bouteille consacrée au placement et à la retenue de cette bague re- présente 1.2 gr/bouteille soit 4% à 8% de la masse de la bouteille. La présente invention propose un moyen d'effectuer des gains de matière tout en conservant la fonction de dispositif de sécurité inviolable.The tamper evident ring represents approximately 20% of the plug mass of the order of 2.2 gr, while the material of the bottle dedicated to the placement and retention of this ring represents 1.2 gr / bottle or 4% to 8% of the mass of the bottle. The present invention provides a means for making material gains while retaining the tamper-proof feature.
Compte tenu de la production mondiale de ce type de bouteil- les, la matière plastique utilisée par le dispositif d'inviolabilité à bague représente plusieurs milliers de tonnes par an.In view of the world production of this type of bottle, the plastic material used by the ring tamper device represents several thousand tons per year.
On a déjà proposé de remplacer la bague d'inviolabilité par un système d' encliquetage élastique permettant le vissage du bouchon, mais s'opposant à son dévissage tant qu'un élément d' invio- labilité solidaire de la jupe du bouchon n'est pas forcé. Un tel système a été proposé notamment dans le EP 1 650 135, dans le WO 95/28334 et dans le WO 90/05681.It has already been proposed to replace the tamper-evident ring by an elastic snap-fastening system which makes it possible to screw the cap, but opposes its unscrewing as long as an element of inviolability joint lability of the cap skirt is not forced. Such a system has been proposed in particular in EP 1,650,135, in WO 95/28334 and in WO 90/05681.
Dans le EP 1 650 135 comme dans le WO 95/28334, le système d' encliquetage élastique se situe au-dessous du pas de vis en sorte qu' il occupe la place prise habituellement par la bague d'inviolabilité détachable et ne permet pas de réaliser une économie substantielle de matière, ni dans le bouchon ni dans la bouteille. Dans le WO 90/05681, le dispositif d' encliquetage élastique se situe au-dessus des pas de vis. Les butées solidaires du goulot du récipient étant au-dessus des pas de vis, la longueur angulaire des pas de vis ne peut pas excéder les espaces séparant ces butées, sans quoi les pas de vis du bouchon ne pourraient pas être engagés avec les pas de vis du goulot. De ce fait, la longueur angulaire conjointe des pas de vis ne peut pas excéder 180°, puisque les espaces séparant les butées solidaires du goulot doivent aussi correspondre aux longueurs respectives des pas de vis solidaires du goulot, chaque pas de vis du bouchon s' étendant sous les pas de vis respectifs du goulot en position de fermeture du bouchon. Une telle solution pénalise gravement la résistance à la pression de la fermeture et n'est en tout cas pas acceptable pour un récipient devant tenir a la pression, tel qu'un bouchon pour boisson gazeuse. Le but de la présente invention est de procurer les mêmes avantages que les bouchons à vis muni de bagues d'inviolabilité, mais en économisant la matière plastique.In EP 1,650,135 as in WO 95/28334, the elastic latching system is located below the thread so that it occupies the place usually taken by the detachable tamper-evident ring and does not allow to achieve substantial savings in material, neither in the cork nor in the bottle. In WO 90/05681, the elastic latching device is located above the threads. The stops integral with the neck of the container being above the screw threads, the angular length of the screw threads can not exceed the spaces between these stops, otherwise the threads of the cap could not be engaged with the steps of screw of the neck. As a result, the joint angular length of the threads can not exceed 180.degree., Since the spaces separating the abutments integral with the neck must also correspond to the respective lengths of the screw threads secured to the neck, each screw pitch of the plug. extending under the respective screw threads of the neck in the closed position of the cap. Such a solution seriously penalizes the pressure resistance of the closure and is in any case not acceptable for a container to be held to the pressure, such as a stopper for carbonated drink. The object of the present invention is to provide the same advantages as the screw caps provided with tamper-proof rings, but by saving the plastic material.
A cet effet, cette invention a pour objet un dispositif inviolable pour fermeture à vis de récipient tel que défini par la revendication 1.For this purpose, this invention relates to a tamper-proof device for container screw closure as defined by claim 1.
La solution proposée présente un intérêt à la fois économique et écologique permettant de réduire les déchets et la consommation de produit à base de pétrole. De plus, la suppression de la bague d'inviolabilité facilite le travail de récupération des bouteilles plastique, puisqu'il n'est plus nécessaire d'enlever la bague d' inviolabilité du goulot de la bouteille en PE coloré pour reçu- pérer le plastique de la bouteille, généralement en PET transparent.The proposed solution is both economical and environmentally friendly, reducing waste and consumption of petroleum-based products. In addition, the removal of the tamper-evident ring facilitates the work of recovering the plastic bottles, since it is no longer necessary to remove the tamper-evident ring from the neck of the colored PE bottle for receipt. puncture the plastic of the bottle, usually in transparent PET.
Les dessins annexés illustrent, schématiquement et à titre d'exemple, une forme d'exécution du dispositif inviolable pour fermeture à vis de récipient objet de la présente invention.The accompanying drawings illustrate, schematically and by way of example, an embodiment of the tamper-proof container closure device object of the present invention.
La figure 1 est une vue en perspective du bouchon vu de dessous; la figure 2 est une vue en perspective du goulot du récipient destiné à être fermé par le bouchon de la figure 1; la figure 3 est une vue partielle en coupe perpendiculairement à l'axe de révolution du goulot et du bouchon de ces deux éléments en position assemblée; la figure 4 est une vue semblable à la figure 3, après rupture du dispositif d'inviolabilité; la figure 5 est une vue semblable à la figure 3, lorsque le bouchon est vissé la première fois; la figure 6 est une vue partielle en perspective avec arrachement d'un récipient fermé par un bouchon selon une seconde forme d'exécution; la figure 7 est une vue en perspective de dessous du bouchon seul; la figure 8 est une vue partielle en coupe selon VII-VII de la figure 5; la figure 9 est une vue semblable à la figure 8 montrant la déformation du dispositif d'inviolabilité et la rupture d'une partie affaiblie lors de l'ouverture du bouchon ; la figure 10 est une vue semblable à la figure 8 comprenant un élément de déformation plastique à la place d'un élément de rupture ; la figure 11 est une vue semblable à la figure 10 montrant la déformation du système d' inviolabilité et plus particulièrement la déformation plastique de la partie affaiblie.Figure 1 is a perspective view of the cap seen from below; Figure 2 is a perspective view of the neck of the container to be closed by the cap of Figure 1; Figure 3 is a partial sectional view perpendicular to the axis of revolution of the neck and the plug of these two elements in the assembled position; Figure 4 is a view similar to Figure 3, after breaking the tamper device; Figure 5 is a view similar to Figure 3, when the cap is screwed the first time; Figure 6 is a partial perspective view with cutaway of a container closed by a plug according to a second embodiment; Figure 7 is a perspective view from below of the plug alone; Figure 8 is a partial sectional view along VII-VII of Figure 5; Figure 9 is a view similar to Figure 8 showing the deformation of the tamper device and the breaking of a weakened part when opening the cap; Figure 10 is a view similar to Figure 8 comprising a plastic deformation member in place of a breaker member; Figure 11 is a view similar to Figure 10 showing the deformation of the tamper system and more particularly the plastic deformation of the weakened part.
Les figures 1 et 2 illustrent respectivement le bouchon à vis 1 et le goulot 2 d'un récipient 3, notamment une bouteille et en particulier une bouteille en PET, destiné à recevoir le bouchon à vis et présentant à cet effet au moins un filet de vis 4. De son côté la face interne de la paroi latérale cylindrique 5 ou de la jupe du bouchon 1 présente autant de filets de vis 6 que le goulot 2, destinés à s'engager sous les filets de vis 4 respectifs du goulot 2. Avantageusement, on utilisera plusieurs filets de vis, jusqu'à 4 de préférence, ce qui permet de limiter l'angle de vissage du bouchon. Dans l'exemple décrit le nombre de filets est de trois sur le goulot 2 et évidemment sur la face interne de la jupe 5 du bouchon 1. Les filets 4 du goulot 2 sont des filets normaux dont la face terminale de sortie 7 est en forme de butée. A cet effet, cette face terminale 7 fait un angle droit avec la tangente à un cercle centré sur l'axe de révolution du goulot 2 et passant par l'intersection entre ce cercle et la face terminale 7. Cette face termi- nale 7 pourrait évidemment aussi faire un angle aigu avec cette tangente, comme on le comprendra à la lecture de la suite de la description.FIGS. 1 and 2 respectively illustrate the screw cap 1 and the neck 2 of a container 3, in particular a bottle and in particular a PET bottle, intended to receive the screw cap and having at least one thread for this purpose. screw 4. On its side the inner face of the cylindrical side wall 5 or the skirt of the cap 1 has as many screw threads 6 as the neck 2, intended to engage under the respective screw threads 4 of the neck 2. Advantageously, will use several screw threads, up to 4 preferably, which limits the screwing angle of the plug. In the example described, the number of threads is three on the neck 2 and obviously on the inner face of the skirt 5 of the cap 1. The threads 4 of the neck 2 are normal threads whose exit end face 7 is shaped stop. For this purpose, this end face 7 makes a right angle with the tangent to a circle centered on the axis of revolution of the neck 2 and passing through the intersection between this circle and the end face 7. This end face 7 could obviously also make an acute angle with this tangent, as will be understood from reading the rest of the description.
La jupe ou paroi latérale 5 du bouchon 1 comporte, dans cet exemple, trois éléments élastiques d' encliquetage 9 présentant une face de butée 8 qui fait un angle droit avec la tangente à un cercle centré sur l'axe de révolution de la jupe ou paroi latérale 5 et passant par l'intersection entre ce cercle et la face de butée 8. Cette face de butée 8 pourrait aussi faire un angle aigu avec cette tangente, de préférence complémentaire avec l'angle aigu de la face terminale 7 du filet de vis 4 du goulot 2.The skirt or side wall 5 of the cap 1 comprises, in this example, three resilient snap-fastening elements 9 having an abutment face 8 which makes a right angle with the tangent to a circle centered on the axis of revolution of the skirt or lateral wall 5 and passing through the intersection between this circle and the abutment face 8. This abutment face 8 could also make an acute angle with this tangent, preferably complementary to the acute angle of the end face 7 of the thread. screw 4 of the neck 2.
Cette face de butée 8 est située à l'extrémité d'une partie renflée vers l'intérieur d'un premier élément élastique d' encliquetage 9 et est rattachée à la paroi latérale 5 du bouchon 1 par au moins un élément de rupture à la traction ou un élément d'allongement plastique à la traction 10. Le renflement de chaque élément élastique d' encliquetage 9 se situe dans l'espace triangulaire ou trapézoïdal disponible entre les filets de vis et la base de la jupe 5 du bouchon 1.This abutment face 8 is situated at the end of an inwardly bulging part of a first resilient snap-fastening element 9 and is attached to the side wall 5 of the stopper 1 by at least one rupture element at the traction or tensile plastic elongation element 10. The bulge of each resilient snap element 9 is located in the triangular or trapezoidal space available between the screw threads and the base of the skirt 5 of the plug 1.
L'extrémité de l'élément élastique d' encliquetage 9 opposée à la butée 8 est articulée à un élément d'articulation 11 par un premier affaiblissement 12, formé par un brusque amincissement de la paroi qui s'étend parallèlement à la génératrice de la paroi latérale cylindrique 5. Cet élément d'articulation 11 est lui-même relié à la paroi latérale 5 par un second affaiblissement 13 également formé par un brusque amincissement qui s'étend aussi parallèlement à la génératrice de la paroi latérale cylindrique 5 du bouchon 1. Ces deux affaiblissements 12 et 13 forment des charnières entre l' éléments élastique d' encliquetage 9 et l'élément d'articulation 11. La face interne de l'élément élastique d' encliquetage 9 s'épaissit progressivement du premier affaiblissement 12 à la face de butée 8. Le plus petit rayon entre cet épaississement de la paroi de l'élément élastique d' encliquetage 9 et l'axe de révolution du goulot 2 une fois le bouchon 1 vissé sur le goulot 2 est choisi pour être inférieur au rayon externe des filets de vis 4 du goulot 2.The end of the snap elastic element 9 opposite to the abutment 8 is articulated to a hinge element 11 by a first weakening 12, formed by a sudden thinning of the wall which extends parallel to the generatrix of the cylindrical side wall 5. This hinge element 11 is itself connected to the side wall 5 by a second weakening 13 also formed by a sudden thinning which also extends parallel to the generatrix of the cylindrical side wall 5 of the plug 1. These two weakenings 12 and 13 form hinges between the elastic snap-fastening element 9 and the articulation element 11. The inner face of the elastic detent element 9 gradually thickens from the first weakening 12 to the abutment face 8. The smallest radius between this thickening of the wall of the elastic locking element 9 and the axis of revolution of the neck 2 once the cap 1 screwed onto the neck 2 is chosen to be smaller than the outer radius of the screw threads 4 of the neck 2.
La partie filetée 4 du goulot 2 se termine par une partie annulaire plane 14.The threaded portion 4 of the neck 2 terminates in a flat annular portion 14.
Lorsque le bouchon 1 de la figure 1 est vissé pour la pre- mière fois sur le goulot 2, durant la fin de la phase de vissage du bouchon 1, la face interne, renflée vers l'intérieur, de l'élément élastique d' encliquetage 9 rencontre le filet de vis 4 du goulot 1, provoquant une déformation élastique centrifuge des éléments 9, 11. Cette déformation est choisie pour rester dans la limite de déformation élastique de la matière plastique du bouchon 1.When the plug 1 of Figure 1 is screwed for the first time on the neck 2, during the end of the screwing phase of the plug 1, the inner face, swollen inwardly, of the elastic member of snap 9 encounters the screw thread 4 of the neck 1, causing a centrifugal elastic deformation of the elements 9, 11. This deformation is chosen to remain within the limit of elastic deformation of the plastic material of the plug 1.
Lorsque cette surface interne renflée de l'élément élastique d' encliquetage 9 a dépassé la face terminale de sortie 7 du filet de vis 4, les éléments 9, 11 déformés vers l'extérieur peuvent reprendre leur forme initiale illustrée par la figure 3.When this inflated internal surface of the elastic detent element 9 has passed the outlet end face 7 of the screw thread 4, the outwardly deformed elements 9, 11 can return to their original shape, as shown in FIG. 3.
Comme on le constate, toute rotation du bouchon 1 dans le sens contraire à celui des aiguilles d'une montre à partir de la position illustrée par la figure 3 se heurte à la rencontre des deux faces de butées. Compte tenu de leur orientation radiale, voire de leurs angles aigus, ces faces de butées offrent une ré- sistance au dévissage du bouchon 1. Cette résistance correspond à la résistance de rupture de l'élément de rupture à la traction 10. Dès que l'on applique au bouchon 1 une force de dévissage dépassant la résistance de rupture de l'élément 10, celui-ci se rompt, permettant aux éléments 9, 11 de se déplacer de manière visible dans la position illustrée par la figure 4, dans laquelle la face de butée 8 est écartée de la face terminale de butée 7, autorisant le dévissage du bouchon 1.As can be seen, any rotation of the stopper 1 in the counterclockwise direction from the position illustrated in FIG. 3 collides with the meeting of the two abutment faces. Given their radial orientation, or even their acute angles, these abutment faces offer a real advantage. resistance to unscrewing of the plug 1. This resistance corresponds to the tensile strength of the tensile breaking element 10. As soon as a screwing force is applied to the plug 1, exceeding the breaking strength of the element 10, it breaks, allowing the elements 9, 11 to move visibly in the position illustrated in Figure 4, wherein the abutment face 8 is spaced from the end stop face 7, allowing the unscrewing of the plug 1 .
Ce dispositif inviolable est irréversible, permettant de constater que le récipient a été ouvert, de manière beaucoup plus évidente que ce n'est le cas des systèmes avec bague détachable de l'art antérieur.This inviolable device is irreversible, allowing to note that the container has been opened, much more obviously than is the case with the detachable ring systems of the prior art.
Parmi les avantages de la forme d'exécution décrite ici, il faut mentionner que le bouchon 1 permet un démoulage sans tiroir ni découpe, ce qui permet une fabrication sûre et aux mêmes cadences voire plus élevées que les bouchons inviolables standards de l'art antérieur. Par conséquent, le gain réalisé par l'économie de matière ne l'est pas au prix d'un processus de fabrication de coût plus élevé. La seconde forme d'exécution illustrée par les figures 6 à 11 diffère de la première essentiellement par la forme du dispositif d'inviolabilité. Celui-ci comporte un élément élastique d'encli- quetage 29 dont la face interne s'épaissit progressivement pour se terminer par une surface de butée 28 qui vient se placer en face de la surface de butée 27 formée à l'extrémité du filet de vis 24 ménagé sur la face externe du goulot 22.Among the advantages of the embodiment described here, it should be mentioned that the plug 1 allows demolding without drawer or cut, which allows a safe manufacturing and at the same rates or higher than the standard tamper-proof caps of the prior art . As a result, the saving made by the material economy is not achieved by the cost of a higher cost manufacturing process. The second embodiment illustrated in Figures 6 to 11 differs from the first essentially by the shape of the tamper device. The latter comprises a resilient snap-fastening element 29 whose inner face gradually thickens and ends with an abutment surface 28 which faces the abutment surface 27 formed at the end of the thread. screw 24 formed on the outer face of the neck 22.
L'élément élastique d' encliquetage 29 a la forme d'un triangle rectangle dont l'hypoténuse est reliée à la jupe 25 du bouchon 21 par une partie affaiblie 30. Ce triangle rectangle formant l'élément élastique d' encliquetage 29 est adjacent à un second triangle rectangle identique formant l'élément d'articulation 31, dont l'hypoténuse est reliée à la jupe 25 du bouchon 21 par une partie affaiblie 33 destinée à permettre l'articulation de l'hypoténuse de l'élément d'articulation 31 avec la jupe 25 du bouchon 21. Les deux côtés adjacents des éléments d' encliquetage 29 et d'articulation 31 se situent également dans une partie affaiblie 32 destinée à permettre l'articulation entre l'élément d' enclique- tage 29 et l'élément d'articulation 31.The snap elastic member 29 has the shape of a right triangle whose hypotenuse is connected to the skirt 25 of the stopper 21 by a weakened portion 30. This right-angled triangle forming the snap-fastening elastic element 29 is adjacent to a second identical right triangle forming the hinge member 31, the hypotenuse of which is connected to the skirt 25 of the stopper 21 by a weakened portion 33 intended to allow the articulation of the hypotenuse of the hinge member 31 with the skirt 25 of the cap 21. The two adjacent sides of the latching elements 29 and articulation 31 are also in a weakened part 32 intended to allow the articulation between the coupling element 29 and the articulation element 31.
Il est possible d'envisager une alternative à la rupture entre l'hypoténuse de l'élément élastique d' encliquetage triangu- laire 29 et la jupe 25 du bouchon 21 lors de l'ouverture initiale du bouchon. On peut en effet choisir de dimensionner l'affaiblissement 30 de l'hypoténuse du triangle adjacente à la jupe 25 de manière à ce que la matière plastique s'étire au-delà de sa limite élastique au lieu de rompre, comme illustré par la figure 10 lors de l' encliquetage et la figure 11 après ouverture du bouchon inviolable en sorte que l'on évite tout risque que les triangles adjacents 29 et 31 ne se détachent de la jupe 25 du bouchon 21 ou que les éléments élastiques d' encliquetage 29 et de d'articulation 31 reviennent élastiquement sur sa position après la première ouverture et ne montre pas clairement la violation de la fermeture . It is possible to envisage an alternative to the rupture between the hypotenuse of the triangular elastic snap-fastening element 29 and the skirt 25 of the stopper 21 during the initial opening of the stopper. It can indeed be chosen to size the weakening of the hypotenuse of the triangle adjacent to the skirt 25 so that the plastic stretches beyond its elastic limit instead of breaking, as illustrated by FIG. 10 when snapping and Figure 11 after opening the tamperproof cap so that it avoids any risk that the adjacent triangles 29 and 31 are detached from the skirt 25 of the cap 21 or that the resilient snap members 29 and hinge 31 resiliently return to its position after the first opening and does not clearly show the violation of the closure.

Claims

REVENDICATIONS
1. Dispositif inviolable pour fermeture à vis de récipient, comportant un bouchon de fermeture (2) vissé sur un goulot (1) du récipient (3) présentant au moins un filet de vis (4) et un système d' encliquetage comprenant au moins une face de butée (7) solidaire du goulot et au moins un renflement élastique d' encliquetage (9) solidaire du bouchon (2) et dont la distance radiale minimum de l'axe de révolution du goulot (1) est inférieure au rayon externe de la face de butée (7) et se termine par une face de butée (8) dont la position angulaire est choisie pour qu' en position vissée du bouchon (2), les faces de butées (7, 8) solidaires du goulot, respectivement du bouchon se situent l'une en face de l'au- tre, pour s'opposer au dévissage du bouchon (2), caractérisé en ce que la face de butée (7) solidaire du goulot (1) est une face terminale de sortie (7) du filet de vis qui s'étend angulairement sur au moins 360°, ledit renflement élastique d' encliquetage (9) se situant en position vissée du bouchon dans l'espace libre qui fait suite à l'extrémité terminale de sortie (7) du filet de vis, dans la hauteur du pas de vis.1. Tamper-proof device for container screw closure, comprising a closure cap (2) screwed onto a neck (1) of the container (3) having at least one screw thread (4) and a latching system comprising at least one an abutment face (7) integral with the neck and at least one elastic snap-fitting bulge (9) integral with the stopper (2) and whose minimum radial distance from the axis of revolution of the neck (1) is less than the external radius of the abutment face (7) and ends with an abutment face (8) whose angular position is chosen so that in the screwed position of the stopper (2), the abutment faces (7, 8) integral with the neck, respectively of the plug are located opposite one another, to oppose the unscrewing of the plug (2), characterized in that the abutment face (7) integral with the neck (1) is a terminal face outlet (7) of the screw thread which extends angularly over at least 360 °, said elastic detent snap (9) s itantant in the screwed position of the cap in the free space which follows the end end outlet (7) of the screw thread, in the height of the screw thread.
2. Dispositif selon la revendication 1, dans lequel la face de butée (8) située à une extrémité du renflement élastique est reliée à la paroi latérale (5) du bouchon de ferme- ture (1) d'une part par au moins un élément de rupture à la traction (10), d'autre part par deux articulations (12, 13) autour de lignes d'affaiblissement parallèles à la génératrice de la paroi latérale (5) de l'organe de fermeture2. Device according to claim 1, wherein the abutment face (8) located at one end of the elastic bulge is connected to the side wall (5) of the closure cap (1) on the one hand by at least one tensile breaking element (10), on the other hand by two joints (12, 13) around weakening lines parallel to the generatrix of the lateral wall (5) of the closing member
(D • 3. Dispositif selon l'une des revendications précédentes, dans lequel le goulot et le bouchon comportent chacun plusieurs pas de vis qui s'étendent conjointement sur au moins 360° . (D • 3. Device according to one of the preceding claims, wherein the neck and the cap each comprise several screw threads which jointly extend over at least 360 °.
4. Dispositif selon l'une des revendications 1 et 3, dans lequel la face de butée (28) située à une extrémité du renflement élastique d' encliquetage (29) est solidaire d'un élément et forme de triangle rectangle rattaché à la jupe (25) du bouchon (21) par une partie affaiblie (30) s' étendant le long de son hypoténuse, un autre côté de cet élément en forme de triangle rectangle est adjacent à un côté d'un élément d'articulation (31) en forme de triangle rectangle dont l'hypoténuse est reliée à la jupe (25) du bouchon (21) par une partie affaiblie (33) servant d'articulation.4. Device according to one of claims 1 and 3, wherein the abutment face (28) located at one end of the resilient snap-fitting bulge (29) is integral with an element and form of a right triangle attached to the skirt. (25) of the plug (21) by a weakened portion (30) extending along its hypotenuse, another side of this right triangular-shaped element is adjacent to one side of a hinge member (31) in the form of a right-angled triangle whose hypotenuse is connected to the skirt (25) of the stopper (21) by a weakened portion (33) serving as a hinge.
5. Dispositif selon l'une des revendications 1, 3 et 4, dans lequel, le renflement élastique d' encliquetage (9, 29) est rattaché à la jupe (5, 25) du bouchon (1, 21) par une partie affaiblie (10, 30) dimensionnée pour se déformer de manière plastique lors du dévissage du bouchon. 5. Device according to one of claims 1, 3 and 4, wherein, the resilient detent snap (9, 29) is attached to the skirt (5, 25) of the cap (1, 21) by a weakened part (10, 30) dimensioned to deform plastically during unscrewing of the plug.
PCT/CH2009/000179 2008-06-04 2009-05-27 Tamper-proof device for threaded closure for container WO2009146567A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP08405150.7 2008-06-04
EP08405150 2008-06-04
EP08405162A EP2105386A1 (en) 2008-06-25 2008-06-25 Tamper-proof device for screw cap
EP08405162.2 2008-06-25

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WO2009146567A1 true WO2009146567A1 (en) 2009-12-10

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20130005A1 (en) * 2013-01-08 2014-07-09 Vieri Ceccherini "CAP WITH GUARANTEE SEAL FOR CONTAINERS AND CONTAINER INCLUDING THE CAP"
DE102013004466A1 (en) * 2013-02-01 2014-08-07 Georg Menshen Gmbh & Co. Kg Closure of grouting connecting element for container, has tamper portion that is inwardly projected in movement path on inside of cap so that tamper portion is abutted against driver portion and is visibly altered by driver in position
WO2018069251A1 (en) * 2016-10-10 2018-04-19 Obrist Closures Switzerland Gmbh Improvements in or relating to closures

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Publication number Priority date Publication date Assignee Title
WO1990005681A1 (en) * 1988-11-23 1990-05-31 Lawson Mardon (M.I.) Limited Tamper evident closure
GB2240098A (en) * 1990-01-20 1991-07-24 Montgomery Daniel & Son Ltd Closure with tamper-indicating device
GB2277320A (en) * 1993-04-02 1994-10-26 Able Ind Ltd Container and tamper evident closure.
WO1995028334A1 (en) * 1994-04-15 1995-10-26 G V Engineering Pty Ltd Tamper evident closure
WO1997008071A1 (en) * 1995-08-30 1997-03-06 G. V. Engineering Pty. Ltd. Tamper evident closure
WO2007085927A2 (en) * 2006-01-27 2007-08-02 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Closure means

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005681A1 (en) * 1988-11-23 1990-05-31 Lawson Mardon (M.I.) Limited Tamper evident closure
GB2240098A (en) * 1990-01-20 1991-07-24 Montgomery Daniel & Son Ltd Closure with tamper-indicating device
GB2277320A (en) * 1993-04-02 1994-10-26 Able Ind Ltd Container and tamper evident closure.
WO1995028334A1 (en) * 1994-04-15 1995-10-26 G V Engineering Pty Ltd Tamper evident closure
WO1997008071A1 (en) * 1995-08-30 1997-03-06 G. V. Engineering Pty. Ltd. Tamper evident closure
WO2007085927A2 (en) * 2006-01-27 2007-08-02 Sacmi Cooperativa Meccanici Imola Societa' Cooperativa Closure means

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITFI20130005A1 (en) * 2013-01-08 2014-07-09 Vieri Ceccherini "CAP WITH GUARANTEE SEAL FOR CONTAINERS AND CONTAINER INCLUDING THE CAP"
WO2014108781A1 (en) 2013-01-08 2014-07-17 Vieri Ceccherini Cap with tamper evident seal for containers, container comprising said cap and preform for producing said container
DE102013004466A1 (en) * 2013-02-01 2014-08-07 Georg Menshen Gmbh & Co. Kg Closure of grouting connecting element for container, has tamper portion that is inwardly projected in movement path on inside of cap so that tamper portion is abutted against driver portion and is visibly altered by driver in position
DE102013004466B4 (en) * 2013-02-01 2020-08-27 Georg Menshen Gmbh & Co. Kg Closure with originality part
WO2018069251A1 (en) * 2016-10-10 2018-04-19 Obrist Closures Switzerland Gmbh Improvements in or relating to closures

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