EP3974338A1 - Assembly for closing a tube and tube therewith - Google Patents

Abstract

The present invention relates to an assembly (1) for closing a tube (3), said assembly (1) comprising:- a tube head (5) comprising a neck (7) and a cap (15) closing said neck (7), - a stopper (9) comprising a punch (17) adapted to cut out said lid (15), said neck (7) and said stopper (9) being configured to make it possible to maintain said stopper (9) fixed on said neck (7) in a first position, called the standby position, in which the punch (17) is kept at a distance from the lid (15) and in a second position, called the use position, in which the said punch (17 ) pierces said seal (15). The invention also relates to a tube (3) comprising such an assembly and the stopper (9) of said assembly (1) or of said tube (3).

Description

The present invention relates to the field of flexible tubes comprising a cap sealing the neck prior to the first use of the tube, and a perforating plug suitable for drilling the cap.

Tubes provided with a cover associated with a perforating plug comprising a punch adapted to perforate said cover are known.

The cap in fact makes it possible to preserve the product contained in the tube in a hermetic manner during its storage prior to its first use, which represents a very significant part of the overall life of the tube.

There are plugs in which the punch is arranged in the plug and protrudes from the latter so as to be able to perforate the cap when the plug is screwed onto the tube head. In order to ensure the preservation of the lid prior to the first use, a ring is placed between the cap and the shoulder of the tube head, so as to keep the punch away from the lid when the cap is screwed on on the neck.

To pierce and/or cut the cap, the user must first unscrew the cap, then remove the ring and finally screw the cap back on until the cap is pierced and/or cut. The number of steps is restrictive for the user who often does not understand what the ring is for and does not necessarily understand either that a cover must be pierced before using the tube for the first time.

There is therefore a need for an assembly for closing a tube which at least partially overcomes the aforementioned drawbacks.

• une tête de tube comprenant un goulot et un opercule obturant ledit goulot,
• un bouchon comprenant un poinçon adapté pour découper ledit opercule,
  • ledit goulot et ledit bouchon étant configurés pour permettre de maintenir ledit bouchon fixé sur ledit goulot dans une première position, dite position d'attente dans laquelle le poinçon est maintenu à distance de l'opercule et dans une seconde position, dite position d'utilisation, dans laquelle ledit poinçon perce ledit opercule, et dans une troisième position, dite position de fermeture, dans laquelle ledit goulot et ledit bouchon assurent une étanchéité dudit tube,
  • ledit bouchon étant configuré pour passer de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture par au moins un mouvement de rotation,
  • lequel ledit bouchon et ledit goulot définissent un axe longitudinal Z-Z, et dans lequel ledit bouchon est configuré pour passer de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture en outre par un mouvement axial selon l'axe,
  • ledit goulot comprenant au moins un premier moyen de blocage coopérant avec ledit bouchon pour maintenir ledit bouchon en position d'attente,
  • ledit goulot comprenant au moins une rainure de guidage configurée pour coopérer avec ledit bouchon pour permettre un mouvement de rotation et/ou un mouvement axial pour le passage dudit bouchon de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
  • le ou lesdits premiers moyens de blocage étant des excroissances des bords de ladite rainure s'étendant vers l'intérieur de la rainure,
  • ladite rainure présentant des portions de guidage successives.

To this end, the present invention proposes an assembly for closing a tube, said assembly comprising:

• a tube head comprising a neck and a cap closing said neck,
• a cap comprising a punch adapted to cut out said lid,
  • said neck and said stopper being configured to make it possible to maintain said stopper fixed to said neck in a first position, called the waiting position in which the punch is kept at a distance from the cover and in a second position, called the use position , in which said punch pierces said cap, and in a third position, called the closed position, in which said neck and said stopper seal said tube,
  • said cap being configured to pass from the standby position to the use position and/or from the use position to the closed position by at least one rotational movement,
  • wherein said cap and said neck define a longitudinal axis ZZ, and wherein said cap is configured to pass from the standby position to the use position and/or from the use position to the closed position further by an axial movement along the axis,
  • said neck comprising at least one first blocking means cooperating with said stopper to hold said stopper in the waiting position,
  • said neck comprising at least one guide groove configured to cooperate with said stopper to allow a rotational movement and/or an axial movement for the passage of said stopper from the standby position to the use position and/or from the position of use in the closed position,
  • the said first blocking means(s) being protuberances from the edges of the said groove extending towards the inside of the groove,
  • said groove having successive guide portions.

Such an assembly allows the stopper to be held in the waiting position without having to use an additional part other than the neck and the stopper. In other words, the free end of the punch protruding from the stopper is kept away from the cap closing the neck and the cap is thus preserved from any perforation or cutting prior to the first use of the tube by a user in a simple and reliable manner. without complicating the closing assembly. In particular, such an assembly makes it possible to refrain from using the spacer ring generally used in such a system to keep the punch away from the lid.

The term “cap” is understood to mean an object allowing the sealing of a receptacle, in particular of an outlet opening for a product, in a reversible manner. A plug according to the invention can thus pass from an open position to a closed position. closing and vice versa, mainly by a screwing or equivalent movement. The present invention does not include closure assemblies, such as a hinged service cap, permanently fixed to the opening and comprising a passage orifice for the exit of the product and a folding cap making it possible to close said orifice.

• ladite tête de tube comprend en outre une épaule,
• ledit goulot et ladite épaule sont conçus en une seule pièce,
• ledit goulot et ladite épaule sont en continuité de matière,
• ledit goulot comprend une extrémité supérieure située à proximité d'un orifice de sortie et une extrémité inférieure opposée à ladite extrémité supérieure,
• ledit opercule est situé à l'extrémité inférieure du goulot,
• ladite tête de tube comprend un insert,
• ledit opercule définit une zone centrale de l'insert,
• ledit insert revêt au moins en partie une face inférieure de ladite épaule,
• le mouvement de rotation et le mouvement axial sont simultanés, et correspondent éventuellement à un mouvement hélicoïdal, notamment un vissage qui pourra présenter une pente variable,
• le mouvement axial et le mouvement de rotation sont successifs, et correspondent éventuellement à un mouvement de type baïonnette,
• ledit ensemble comprend au moins un premier moyen de blocage et/ou un second moyen de blocage,
• le ou lesdits premiers moyens de blocage et le ou lesdits seconds moyens de blocage coopèrent pour maintenir ledit bouchon en position d'attente,
• ledit bouchon comprend ledit au moins un second moyen de blocage,
• ledit bouchon est maintenu en position d'attente par encliquetage dudit bouchon sur ledit goulot, de préférence par encliquetage du ou desdits premiers et seconds moyens de blocage,
• le ou lesdits premiers moyens de blocage sont un anneau situé sur une surface externe dudit goulot,
• l'anneau est axialement situé dans une partie médiane dudit goulot,
• ledit goulot comprend un filetage, dit premier filetage, permettant ledit mouvement de rotation et/ou ledit mouvement axial pour le passage dudit bouchon de la position d'attente et/ou d'une position intermédiaire à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
• ledit premier filetage est situé dans une partie dudit goulot supérieure à l'anneau,
• ladite surface externe dudit goulot comprend une zone lisse, dite première zone lisse,
• ledit anneau est compris entre ledit premier filetage et ladite première zone lisse,
• le ou lesdits seconds moyens de blocage sont des excroissances situées sur une surface interne dudit bouchon,
• lesdites excroissances sont régulièrement réparties sur le pourtour dudit bouchon,
• lesdites excroissances sont réparties sur deux rangées de manière à ce que l'anneau soit localisé entre lesdites excroissances, en position d'attente du bouchon,
• lesdites excroissances sont décalées angulairement entre les deux rangées,
• les excroissances sont situées sur la partie inférieure dudit bouchon,
• ledit ensemble comprend un premier et/ou un second filetage,
• ledit second filetage coopère avec ledit premier filetage pour permettre le passage dudit bouchon de la position d'attente et/ou de la position intermédiaire à la position d'utilisation,- les premiers et seconds filetages ne coopèrent pas encore et un vissage du bouchon sur le goulot n'est pas encore entamé lorsque le bouchon est en position d'attente,
• ledit second filetage coopère avec ledit premier filetage pour permettre ledit mouvement de rotation et/ou ledit mouvement axial pour le passage dudit bouchon de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
• le second filetage coopère avec le premier filetage pour sortir de la position d'attente,
• ledit bouchon comprend ledit second filetage,
• ledit second filetage est situé dans une partie dudit bouchon supérieure auxdites excroissances,
• ledit premier filetage est situé en vis-à-vis d'une zone lisse de la surface interne dudit bouchon, dite seconde zone lisse, en position d'attente du bouchon,
• ladite seconde zone lisse est située entre les excroissances et le second filetage,
• une surface externe dudit bouchon comprend une partie lisse et une partie nervurée
• lesdites excroissances sont réparties de manière à ce que l'anneau dépasse la rangée supérieure d'excroissances sous l'action d'une pression le long de l'axe longitudinal Z-Z pour arriver dans une position intermédiaire,
• ledit filetage dudit bouchon commence à s'engager dans le filetage dudit goulot dans la position intermédiaire,
• la totalité dudit filetage du goulot est en vis-à-vis d'une zone lisse de la surface interne du bouchon en position d'attente,
• lesdites excroissances sont réparties sur deux rangées séparées axialement de manière à permettre la libre rotation du bouchon en position d'attente,
• le ou lesdits premiers moyens de blocage sont un ou des éléments en saillie,
• le ou lesdits éléments en saillie sont situés à une entrée de ladite rainure,
• le ou lesdits éléments en saillie dudit goulot comprennent des excroissances d'un ou des bords de ladite rainure de guidage,
• le ou lesdits éléments en saillie dudit goulot comprennent des excroissances issues du fond de ladite rainure de guidage,
• ladite rainure s'étend sur la surface externe dudit goulot de l'extrémité supérieure à l'extrémité inférieure du goulot,
• au moins une première portion de ladite rainure assure la position d'attente,
• ladite première portion de ladite rainure est sensiblement verticale par rapport à l'axe Z-Z,
• une ou plusieurs autres portions de ladite rainure permettent le passage de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
• une seconde portion de ladite rainure permet de sortir ledit bouchon de la position d'attente,
• une troisième portion de ladite rainure permet le passage dudit bouchon en position d'utilisation,
• une dernière portion de ladite rainure permet le passage dudit bouchon en position de fermeture,
• ladite seconde portion est successive à ladite première portion,
• ladite seconde portion est sensiblement horizontale par rapport à l'axe Z-Z,
• ladite troisième portion est sensiblement verticale par rapport à l'axe Z-Z,
• ladite seconde portion est hélicoïdale de pente x,
• ladite troisième portion est hélicoïdale de pente y,
• la pente y de la troisième portion hélicoïdale est supérieure à la pente x la deuxième portion hélicoïdale,
• ladite dernière portion est horizontale par rapport à l'axe Z-Z,
• ladite rainure comprend une entrée située vers ledit orifice de sortie dudit goulot,
• lesdits éléments en saillie dudit goulot sont situés à l'entrée de ladite rainure,
• au moins un desdits éléments en saillie dudit goulot est situé entre la première portion et la seconde portion de ladite rainure,
• ledit bouchon comprend au moins un élément en saillie configuré pour coopérer avec lesdits éléments en saillie dudit goulot pour maintenir ledit bouchon en position d'attente,
• le ou lesdits éléments en saillie dudit bouchon sont configurés pour coopérer avec ladite rainure dudit goulot pour permettre ledit mouvement de rotation et/ou ledit mouvement axiale pour le passage dudit bouchon de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
• le ou les éléments en saillie dudit bouchon sont situés sur la partie inférieure dudit bouchon,
• ledit goulot comprend une rampe de guidage configurée pour coopérer avec au moins un élément en saillie dudit bouchon pour positionner ledit élément en saillie à l'entrée de ladite rainure,
• ladite rampe de guidage présente une direction de guidage inverse à la direction de guidage de la dite rainure pour le passage dudit bouchon de la position d'attente à la position d'utilisation et/ou de la position d'utilisation à la position de fermeture,
• ledit bouchon comprend une surface supérieure,
• ladite surface supérieure présente au moins une ouverture au droit des éléments en saillie dudit bouchon,
• le nombre d'ouvertures est identique au nombre d'éléments en saillie du dudit bouchon,
• ledit bouchon comprend un jonc d'étanchéité situé radialement en retrait desdites ouvertures dudit bouchon pour assurer l'étanchéité de la fermeture,
• ledit jonc d'étanchéité est configuré pour coopérer avec un siège de jonc prévue sur une surface intérieure dudit goulot lorsque ledit bouchon est en position de fermeture, notamment à proximité de l'extrémité supérieure dudit goulot.

According to different embodiments of the invention, which may be taken together or separately:

• said tube head further comprises a shoulder,
• said neck and said shoulder are designed in one piece,
• said neck and said shoulder are in continuity of material,
• said neck comprises an upper end located close to an outlet orifice and a lower end opposite said upper end,
• said lid is located at the lower end of the neck,
• said tube head comprises an insert,
• said lid defines a central zone of the insert,
• said insert at least partially covers an underside of said shoulder,
• the rotational movement and the axial movement are simultaneous, and possibly correspond to a helical movement, in particular screwing which may have a variable slope,
• the axial movement and the rotational movement are successive, and possibly correspond to a bayonet type movement,
• said assembly comprises at least a first blocking means and/or a second blocking means,
• the said first blocking means(s) and the said second blocking means(s) cooperate to maintain the said stopper in the waiting position,
• said plug comprises said at least one second blocking means,
• said cap is held in the waiting position by snapping said cap onto said neck, preferably by snapping said first and second locking means,
• the said first blocking means(s) are a ring located on an external surface of the said neck,
• the ring is axially located in a middle part of said neck,
• said neck comprises a thread, called first thread, allowing said rotational movement and/or said axial movement for the passage of said stopper from the standby position and/or from an intermediate position to the use position and/or from the use position to the closed position,
• said first thread is located in a part of said neck higher than the ring,
• said outer surface of said neck comprises a smooth zone, called the first smooth zone,
• said ring is between said first thread and said first smooth zone,
• the said second blocking means(s) are protrusions located on an internal surface of the said cap,
• said protrusions are regularly distributed around the periphery of said stopper,
• said protrusions are distributed over two rows so that the ring is located between said protrusions, in the stopper waiting position,
• said protrusions are angularly offset between the two rows,
• the protrusions are located on the lower part of said stopper,
• said assembly comprises a first and/or a second thread,
• said second threading cooperates with said first threading to allow passage of said stopper from the standby position and/or from the intermediate position to the use position, the first and second threadings do not yet cooperate and a screwing of the stopper on the neck is not yet started when the cork is in the waiting position,
• said second threading cooperates with said first threading to allow said rotational movement and/or said axial movement for the passage of said stopper from the standby position to the use position and/or from the use position to the closing,
• the second thread cooperates with the first thread to come out of the waiting position,
• said plug comprises said second thread,
• said second thread is located in a part of said cap higher than said protrusions,
• said first thread is located opposite a smooth zone of the internal surface of said plug, called the second smooth zone, in the ready position for the plug,
• said second smooth zone is located between the protuberances and the second thread,
• an outer surface of said cap includes a smooth portion and a ribbed portion
• said protrusions are distributed so that the ring exceeds the upper row of protrusions under the action of pressure along the longitudinal axis ZZ to reach an intermediate position,
• said thread of said stopper begins to engage with the thread of said neck in the intermediate position,
• all of said threading of the neck is opposite a smooth zone of the internal surface of the stopper in the waiting position,
• said protrusions are distributed over two rows separated axially so as to allow free rotation of the stopper in the standby position,
• the said first blocking means(s) are one or more protruding elements,
• the said protruding element or elements are located at an entrance to the said groove,
• the said element(s) projecting from the said neck comprise protuberances from one or the edges of the said guide groove,
• the said element(s) projecting from the said neck comprise protrusions coming from the bottom of the said guide groove,
• said groove extends over the outer surface of said neck from the upper end to the lower end of the neck,
• at least a first portion of said groove ensures the waiting position,
• said first portion of said groove is substantially vertical with respect to axis ZZ,
• one or more other portions of said groove allow passage from the standby position to the use position and/or from the use position to the closed position,
• a second portion of said groove makes it possible to remove said stopper from the standby position,
• a third portion of said groove allows said plug to pass into the position of use,
• a last portion of said groove allows said stopper to pass into the closed position,
• said second portion is successive to said first portion,
• said second portion is substantially horizontal relative to the axis ZZ,
• said third portion is substantially vertical relative to the axis ZZ,
• said second portion is helical with slope x,
• said third portion is helical with a slope y,
• the slope y of the third helical portion is greater than the slope x of the second helical portion,
• said last portion is horizontal relative to the axis ZZ,
• said groove comprises an inlet located towards said outlet orifice of said neck,
• said elements protruding from said neck are located at the entrance to said groove,
• at least one of said projecting elements of said neck is located between the first portion and the second portion of said groove,
• said cap comprises at least one projecting element configured to cooperate with said projecting elements of said neck to hold said cap in the waiting position,
• said projecting element or elements of said stopper are configured to cooperate with said groove of said neck to allow said rotational movement and/or said axial movement for passage of said stopper from the standby position to the use position and/or the position of use to the closed position,
• the projecting element(s) of said plug are located on the lower part of said plug,
• said neck comprises a guide ramp configured to cooperate with at least one projecting element of said stopper to position said projecting element at the entrance to said groove,
• said guide ramp has a guide direction opposite to the guide direction of said groove for the passage of said stopper from the standby position to the use position and/or from the use position to the closed position ,
• said stopper comprises an upper surface,
• said upper surface has at least one opening in line with the projecting elements of said stopper,
• the number of openings is identical to the number of protruding elements of said cap,
• said plug comprises a sealing ring located radially set back from said openings of said plug to seal the closure,
• said sealing ring is configured to cooperate with a ring seat provided on an inner surface of said neck when said cap is in the closed position, in particular close to the upper end of said neck.

The invention also relates to a tube comprising an assembly as described above.

• la figure 1 présente une vue en perspective d'un tube, illustré partiellement, comprenant une tête de tube pour un ensemble pour la fermeture de tube selon un premier mode de réalisation de l'invention ;
• la figure 2 présente une vue en perspective d'un bouchon destiné à être fixé sur la tête de tube de la figure 1 ;
• la figure 3 présente une vue en élévation du tube de la figure 1 sur lequel est fixé le bouchon de la figure 2 en position d'attente, la tête de tube et ledit bouchon formant un ensemble pour la fermeture de tube selon l'invention ;
• la figure 4 présente une vue en coupe axiale de la figure 3, l'ensemble étant dans la position d'attente, dans une première configuration ;
• la figure 5 reprend la figure 4, l'ensemble de fermeture étant dans la position d'attente, dans une seconde configuration ;
• la figure 6 reprend la figure 4, l'ensemble de fermeture étant dans une position intermédiaire ;
• la figure 7 reprend la figure 4, l'ensemble de fermeture étant dans une position d'utilisation ;
• la figure 8 présente une vue en élévation d'un tube, illustré partiellement, comprenant une tête de tube pour un ensemble pour la fermeture de tube selon un second mode de réalisation de l'invention ;
• la figure 9 présente une vue en élévation d'un tube, illustré partiellement, comprenant une tête de tube pour un ensemble pour la fermeture de tube selon un troisième mode de réalisation de l'invention ;
• la figure 10 présente une vue en perspective d'un tube, illustré partiellement, comprenant une tête de tube pour un ensemble pour la fermeture de tube selon un quatrième mode de réalisation de l'invention ;
• les figures 11 et 12 présentent une vue en perspective d'un bouchon destiné à être fixé sur la tête de tube des figures 8 à 10 ;
• la figure 13 présente une vue en en élévation du tube de la figure 10, sur lequel le bouchon des figures 11 et 12 est dirigé vers la position d'attente, la tête de tube et ledit bouchon formant un ensemble pour la fermeture de tube selon l'invention ;
• la figure 14a reprend la figure 13, l'ensemble de fermeture étant dans la position d'attente ;
• la figure 14b présente une vue en coupe axiale de la figure 14a, l'ensemble étant dans la position d'attente ;
• les figures 15a et 15b reprennent les figures 14a et 14b, l'ensemble de fermeture sortant de la position d'attente et amorçant la position d'utilisation ;
• les figures 16a et 16b reprennent les figures 14a et 14b, l'ensemble de fermeture étant dans une position de fermeture
• la figure 17 présente une vue en perspective d'un tube, illustré partiellement, comprenant une tête de tube pour un ensemble pour la fermeture de tube selon un cinquième mode de réalisation de l'invention.

Other characteristics, objects and advantages of the invention will emerge from the description which follows, which is purely illustrative and not limiting, and which must be read in conjunction with the appended drawings, in which:

• the figure 1 presents a perspective view of a tube, partially illustrated, comprising a tube head for an assembly for the tube closure according to a first embodiment of the invention;
• the figure 2 shows a perspective view of a plug intended to be fixed on the tube head of the figure 1 ;
• the picture 3 shows an elevational view of the tube of the figure 1 on which the cap of the figure 2 in the standby position, the tube head and said stopper forming an assembly for closing the tube according to the invention;
• the figure 4 shows an axial sectional view of the picture 3 , the assembly being in the standby position, in a first configuration;
• the figure 5 take it back figure 4 , the closure assembly being in the standby position, in a second configuration;
• the figure 6 take it back figure 4 , the closure assembly being in an intermediate position;
• the figure 7 take it back figure 4 , the closure assembly being in a use position;
• the figure 8 shows an elevation view of a tube, partially illustrated, comprising a tube head for a tube closure assembly according to a second embodiment of the invention;
• the figure 9 shows an elevational view of a tube, partially illustrated, comprising a tube head for a tube closure assembly according to a third embodiment of the invention;
• the figure 10 presents a perspective view of a tube, partially illustrated, comprising a tube head for an assembly for the tube closure according to a fourth embodiment of the invention;
• the figures 11 and 12 show a perspective view of a plug intended to be fixed on the tube head of figures 8 to 10 ;
• the figure 13 shows an elevational view of the tube of the figure 10 , on which the cap of the figures 11 and 12 is directed towards the standby position, the tube head and said stopper forming an assembly for closing the tube according to the invention;
• the picture 14a take it back figure 13 , the closure assembly being in the standby position;
• the figure 14b shows an axial sectional view of the picture 14a , the assembly being in the standby position;
• the figures 15a and 15b resume the figures 14a and 14b , the closure assembly leaving the standby position and entering the use position;
• the figures 16a and 16b resume the figures 14a and 14b , the closure assembly being in a closed position
• the figure 17 shows a perspective view of a tube, partially illustrated, including a tube head for a tube closure assembly according to a fifth embodiment of the invention.

In all of the figures, the elements in common are identified by identical reference numerals.

• une tête de tube 5 comprenant un goulot 7, et
• un bouchon 9 configuré pour être fixé sur ledit goulot 7, notamment par vissage.

As illustrated in the various figures, the invention relates to an assembly 1 for closing a tube 3. Said assembly 1 comprises:

• a tube head 5 comprising a neck 7, and
• a cap 9 configured to be fixed on said neck 7, in particular by screwing.

The tube head 5, a variant of which is presented on the figure 1 and 3 to 8 , comprises the neck 7 defining a longitudinal axis ZZ, a shoulder 11 and a solid insert 13 forming a cap 15 closing said neck 7, in the lower part of the latter. As shown here, said neck 7 and said shoulder 11 are designed in one piece and are in continuity of manner. The insert 13 is located against an underside of the shoulder 11, intended to be oriented towards the inside of the tube.

Said neck 7 is, here, in the shape of a cylinder extending from an upper end located towards the outside of said tube 3 towards a lower end opposite the upper end and directed towards the inside of said tube 3. Said upper end has an outlet orifice 7a allowing the outlet of said product contained in the tube. The lower end is adjacent to said shoulder 11.

Said shoulder 11 extends from the lower end of said neck towards an outer periphery, here cylindrical, in a direction essentially perpendicular to the axis ZZ, that is to say the part of the tube head going in s' flaring from said neck 7. Said shoulder 11 is configured so that a tube skirt can be fixed, in particular at its periphery, to form said tube 3.

More specifically, the insert 13 comprises a peripheral section, typically of frustoconical or disc shape, and a central section forming said cover 15, the diameter of which typically corresponds to the internal diameter of the neck 7.

In general, the stopper 9, an example of which is illustrated in figure 2 , comprises a punch 17 projecting from said plug 9. Said punch 17 is in particular made from the material of said plug 9. Said punch 17 is configured so as to be inserted inside the neck 7 of the tube head 5 when the plug 9 is fixed to said neck 7. A longitudinal direction of the cap 9 is defined, corresponding to the longitudinal axis ZZ of the neck 7 when the cap 9 is fixed to the neck 7.

Said punch 17 allows the cutting and/or perforation of the lid 15. The cut is advantageously partial, so that the portion(s) of the lid 15 that have been cut out remain linked to the rest of the insert, preventing thus any mixing of the material forming the insert with a product contained in the associated tube 3, and any distribution of this material to the user.

In general, said punch 17 has a cylindrical section of revolution, one free end of which is advantageously provided with cutting means so that when the stopper 9 is fixed, for example screwed, on the neck 7 of the tube head 5, the free end of the punch 17 is inserted into the neck 7. Said cutting means can be a bevel shape of the free end, teeth and/or cutting notches, for example, regularly distributed around the periphery of the free end of punch 17. The example of punch 17 shown in figure 2 and 4 to 8 is a punch 17 of cylindrical section of revolution, the free end of which is provided with three teeth 19 of low height and regularly distributed around the periphery of its free end.

According to the present invention, said neck 7 and said stopper 9 are configured to make it possible to maintain said stopper 9 fixed to said neck 7 in a first position, called the waiting position ( figures 3 to 5 and 14a, 14b ), in which the punch 17 is kept at a distance from the cover 15 and in a second position, called the use position ( figure 8 and 15a, 15b ), in which said punch 17 pierces said lid 15.

Said neck 7 and said stopper 9 can also be configured to make it possible to maintain said stopper 9 in a third position, called the closed position ( figure 7 and 16a, 16b ), wherein said neck 7 and said stopper 9 seal said tube 3.

Advantageously, said cap 9 is configured to pass from the standby position to the use position and/or from the use position to the closed position by at least one rotational movement.

In certain embodiments, said rotational movement can also be accompanied simultaneously by an axial movement along the Z-Z axis. It is then a helical movement.

In other embodiments, the axial movement is performed after the rotational movement.

Advantageously, said cap 9 is configured to pass from the standby position to the use position and/or from the use position to the closed position essentially by a movement always going in the same direction, in other words the direction of rotation is always the same.

Advantageously, the passage of said stopper 9 from the standby position to the use position and/or from the use position to the closed position is reversible. It is thus possible to open said tube and then to close it after use, and vice versa.

Advantageously, said neck 7 comprises at least one first blocking means configured to cooperate with said stopper 9 to hold said stopper 9 in the waiting position.

In a first embodiment, said neck 7 and said stopper 9 each comprise at least one locking means cooperating together to maintain said stopper 9 in the waiting position.

In the example of this first embodiment illustrated here in figures 1 to 7 , said first blocking means(s) are a ring 25 located on an outer surface of said neck 7 and said second blocking means(s) are protrusions 27a, 27b located on an inner surface of said stopper 9.

In this example, said stopper 9 is thus held in the standby position by snapping said stopper 9 onto said neck 7, in particular by snapping ring 25 with said protrusions 27a, 27b.

Advantageously, said protrusions 27a, 27b are regularly distributed around the periphery of said stopper 9, in particular on the lower part of said stopper 9. In the example illustrated here, the protrusions 27a, 27b are distributed over two rows, separated axially, and are angularly offset between the two rows so that the ring 25 is located between said protrusions 27a, 27b, in the waiting position of the stopper 9. Preferably, each row comprises at least two protrusions 27a, 27b, or even at least three, or even at least four. Here, each of the rows comprises four protuberances 27a, 27b.

The lower row of protrusions 27a makes it possible to maintain said stopper 9 fixed to said neck 7 and to avoid unwanted removal of said stopper 9. The upper row of protrusions 27b makes it possible to limit the movement of said stopper 9 downwards when the latter is fixed on the neck 7 and thus to keep the punch 17 away from the cover 15 and to avoid perforation and/or cutting of the latter without the intervention of the user before the first use.

Advantageously, the ring 25 is made from the material of said neck 7 and goes all the way around said neck 7. Said ring 25 comprises a lower surface 25a directed towards the shoulder 11 of the tube head 5 and an upper surface 25b directed towards the outlet orifice 7a of said neck 7. Said lower 25a and upper 25b surfaces are substantially planar and their radial extension allows ring 25 to be snapped between said protrusions 27a, 27b. The ring 25 comprises in particular a thinned end to facilitate its snap-fastening between the protrusions 27a, 27b and its disengagement therefrom so that the user easily passes from the standby position to the use position then from the position of use upon removal of the stopper 9. Similarly, the protrusions 27a, 27b may also have a thinned end, as can be seen here. More specifically, here said ring 25 has a cross section of trapezoidal or triangular shape with a rounded top and/or said protrusions 27a, 27b have a rounded cross section.

Advantageously, said neck 7 and said stopper 9 each comprise a thread, said first thread 29 and second thread 31 cooperating together to allow passage of said stopper 9 from the standby position to the use position by screwing by the user of said stopper 9 on the neck 7. In this embodiment, said rotational movement and said axial movement described above are simultaneous and causes said screwing, according to a helical movement. Said stopper 9 is then fixed by screwing to said neck 7, while in the standby position, preferably, said threads 29 and 31 are not engaged.

Said first thread 29 is located on the outer surface of said neck 7 in a part of the latter higher than ring 25.

Said second thread 31 is located on the internal surface of said plug 9 in a part of the latter higher than said protrusions 27a, 27b, here at the bottom of said plug 9.

Said neck 7 further comprises on its outer surface a smooth zone, called first smooth zone 33. Here, by smooth zone is meant a non-threaded zone. Said first smooth zone 33 extends over a part lower than said first thread 29 and lower than said ring 25. In other words, said first smooth zone 33 extends from the lower surface 25a of said ring 25 towards the shoulder 11 of the head of the tube 5. Ring 25 is thus axially located in a middle part of said neck 7 between said first thread 29 and said first smooth zone 33.

Said stopper 9 also comprises on its internal surface a smooth zone, called second smooth zone 35. Here again, by smooth zone is meant a non-threaded zone. Said second smooth zone 35 is located on a part lower than said second thread 31 and higher than the protrusions 27a, 27b, that is to say between the protrusions 27a, 27b and the second thread 31. In the example illustrated, the second smooth zone 35 extends from the bottom of the second thread 31 to the upper row of protrusions 27b. The internal diameter of said stopper 9 at the level of the second smooth zone 35 is greater than the diameter of said neck 7 measured at the top of the threads of said first thread 29.

Said stopper 9 further comprises an outer surface of which a lower part is smooth 21 and the other upper part is ribbed 23. The ribbed part 23 corresponds in particular to a gripping zone for the user and facilitates handling. of the stopper 9 and the opening/closing of said tube 3.

Initially, said stopper 9 is fixed on said neck 7. In this step, said ring 25 is snapped onto the lower row of protrusions 27a and stopper 9 is held in the waiting position ( figures 3 to 5 ). The punch 17 is located at a non-zero distance from said cover 15 to protect it from cutting and/or perforation. Here, this maintenance in the waiting position is ensured by the upper row of protrusions 27b as mentioned above, on which the ring 25 comes into abutment if one involuntarily tries to push the plug 9 ( figure 5 ). The position of the upper row of protrusions 27b is calculated so that the punch 17 is kept sufficiently far from said cap 15 in the waiting position of said stopper 9. The lower row of protrusions 27a, on which the ring 25 comes into abutment if one involuntarily tries to remove the plug 9 ( figure 4 ), makes it possible to avoid unwanted removal of said plug 9.

In this waiting position, said first thread 29 is located opposite the second smooth zone 35 of said plug 9, as is visible in the figures 3 to 5 . The first and second threads (29, 31) do not cooperate yet and the screwing of the stopper 9 on the neck 7 has not yet started.

In a second step, said cap 9 is pressed onto said neck 7 by the user along the axis ZZ so that said ring 25 goes beyond the upper row of protrusions 27b to reach an intermediate position ( figure 6 ). In this intermediate position, the thread 31 of the said stopper 9 begins to engage in the thread 29 of the said neck 7 and the said punch 17 reaches then pierces and/or cuts the said lid 15, on the last turn or turns of screwing.

It is also possible, in another embodiment not shown, that said threads 29 and 31 are in contact, or even engaged from the standby position. The screwing then makes it possible to facilitate the passage from the standby position to the use position, and in particular the passing by said ring of the upper row of protrusions 27b, to reach the intermediate position.

Finally, said cap 9 is completely screwed onto said neck 7 by the user. The stopper 9 thus reaches the closed position ( figure 7 ) in which said lid 15 is cut and/or perforated by said punch 17. Smooth zone 35 of stopper 9 is then opposite smooth zone 33 of said neck 7.

Other embodiments are conceivable allowing the fixing of the stopper on the neck and its maintenance in the waiting position. In particular, it is possible for the ring and the protrusions to be reversed, that is to say that the stopper comprises a ring on its internal surface cooperating with at least one protrusion located on the external surface of the neck.

In the embodiments shown in figures 8 to 17 , said first blocking means(s) are one or more projecting elements 37a, 37b, 37c located on an outer surface of said neck 7.

Said projecting elements 37a, 37b, 37c of said neck 7 are configured to cooperate with said stopper 9 to hold said stopper 9 in the waiting position and more particularly with at least one projecting element 39 of said stopper 9.

Advantageously, said neck 7 also comprises at least one, here three, guide grooves 41 configured to cooperate with said stopper 9 to allow said rotational movement and/or said axial movement for the passage of said stopper 9 from the position of standby to the use position and/or from the use position to the closed position.

More particularly, the guide groove 41 of said neck 7 is configured to cooperate with the or each of the projecting elements 39 of said stopper 9, in particular to allow said rotational movement and/or said axial movement for the passage of said stopper 9 from the position standby to the use position and/or from the use position to the closed position.

Thus, said groove 41 extends over the outer surface of said neck 7 from the upper end of neck 7 located close to outlet orifice 7a at the lower end opposite said upper end. Said groove 41 comprises in particular an inlet 41a located towards said outlet orifice 7a of said neck 7.

Advantageously, said groove 41 has successive guide portions. It may be in particular a first portion 41b ensuring the standby position and other portions allowing passage from the standby position to the position of use and/or from the position of use to the position closing.

• une seconde portion 41c permettant de sortir ledit bouchon 9 de la position d'attente,
• une troisième portion 41d permettant le passage dudit bouchon 9 en position d'utilisation,
• une dernière portion 41e permettant le passage dudit bouchon 9 en position de fermeture.

In particular, said groove 41 has:

• a second portion 41c enabling said stopper 9 to be taken out of the waiting position,
• a third portion 41d allowing said stopper 9 to pass into the position of use,
• a last portion 41e allowing said stopper 9 to pass into the closed position.

Said groove 41 extends between two edges 55, extending radially from a bottom 57 of said groove 41. Preferably, said groove 41 is made in one piece with the neck 7.

In the embodiment shown in figure 8 , said first portion 41b of said groove 41 is vertical relative to the axis ZZ. It is followed by the second portion 41c which is horizontal with respect to the axis ZZ, then by the third portion 41d which is vertical with respect to the axis ZZ, and finally by the last portion 41e which is horizontal with respect to the ZZ axis.

In this embodiment, said projecting elements 37a, 37b of said neck 7 are protuberances from the edges of said groove 41 extending towards the inside of the groove. Alternatively, said protruding elements 37a, 37b of said neck 7 may be protrusions from the bottom 57 of said groove 41. Thus, said groove 41 has a first protrusion 37a located at the entrance to the first portion 41b of groove 41. This first protuberance 37a limits the upward axial movement along the axis ZZ of said stopper 9 and makes it possible to maintain said stopper 9 fixed to said neck 77 and to avoid unwanted removal of the latter.

Said groove 41 also has a second protrusion 37b, of the same nature, located between the first 41b and the second 41c portions of the groove 41. This second protrusion 37b limits the rotational movement of the said cap 9 and in particular the exit of the cap 9 from its standby position and its engagement towards the position of use. In other words, this second protrusion 37b makes it possible to keep the punch 17 away from the lid 15 and to avoid perforation and/or cutting of the latter without the intervention of the user before the first use.

In the embodiment shown in figure 9 , said first portion 41b of said groove 41 is vertical relative to the axis ZZ. It is followed by the second portion 41c which is horizontal with respect to the axis ZZ, then by the third portion 41d which is helical, and finally by the last portion 41e which is horizontal with respect to the axis ZZ.

In this embodiment, said neck 7 comprises a first projecting element which is a first lug 37a located at the entrance to the first portion 41b of the groove 41. This lug 37a limits the upward axial movement along the axis ZZ of said stopper 9 and keeps said stopper 9 fixed on said neck 7 and avoids unwanted removal of said stopper 9. One of the edges of said groove 41 also has a protrusion 37b which is a second element projecting from said neck 7. As for the protrusions 37a, 37b of the embodiment of the figure 8 , this protrusion extends inwardly of the groove 41. This protrusion 37b is located between the first 41b and the second 41c portion of the groove 41. It makes it possible to limit the rotational movement of said plug 9 and in particular the outlet of the cap 9 from its standby position and its engagement in the use position. In other words, this protrusion 37b makes it possible to keep the punch 17 away from the lid 15 and to avoid perforation and/or cutting of the latter without the intervention of the user before the first use.

In the embodiment shown in figures 10 to 16 said first portion 41b is vertical with respect to axis ZZ. It is followed by the second portion 41c which is helical with slope x, then by the third portion 41d which is helical with slope y. The slope y of the third helical portion 41d is greater than the slope x of the second helical portion 41c. Said groove 41 finally ends with the last portion 41e which is horizontal with respect to the axis ZZ.

In this embodiment, said neck 7 comprises two projecting elements in the form of protrusions coming from the bottom of said guide groove. These two projecting elements are two lugs 37a, 37b located towards the entrance 41a of said groove 41. More particularly, a first lug 37a is located at the entrance of the first portion of the groove 41. This lug 37a limits the movement axial upwards along the axis ZZ of said stopper 9 and makes it possible to maintain said stopper 9 fixed on said neck 7 and to avoid unwanted removal of said stopper 9. The second lug 37b is located between the first 41b and the second 41c portions of the groove 41. It makes it possible to limit the rotational movement of said stopper 9 and in particular the exit of the stopper 9 from its standby position and its engagement towards the position of use. In other words, this second lug 37b makes it possible to keep the punch 17 away from the lid 15 and to avoid perforation and/or cutting of the latter without the intervention of the user before the first use.

In the embodiment shown in figure 17 , said first portion 41b is vertical relative to the axis ZZ. It is followed by the second portion 41c which is helical with slope x, then by the third portion 41d which is helical with slope y. The slope y of the third helical portion 41d is greater than the slope x of the second helical portion 41c. Said groove 41 finally ends with the last portion 41e which is horizontal with respect to the axis ZZ.

In this embodiment, said projecting elements of said neck 7 are projections 37a, 37b, 37c of the edges of said groove 41 extending towards the inside of the groove. Thus, said groove 41 has a first protrusion 37a located at the entrance to the first portion 41b of the groove 41. This first protrusion 37a limits the upward axial movement along the axis ZZ of said stopper 9 and makes it possible to maintain said stopper 9 attached to said neck 7 7 and avoid unwanted removal thereof.

Said groove 41 also has a second protrusion 37b, of the same nature, located between the first 41b and the second 41c portions of the groove 41. This second protrusion 37b limits the rotational movement of the said cap 9 and in particular the exit of the cap 9 from its standby position and its engagement towards the position of use. In other words, this second protrusion 37b makes it possible to keep the punch 17 away from the lid 15 and to avoid perforation and/or cutting of the latter without the intervention of the user before the first use.

Said groove 41 further has a third protrusion 37c, of the same nature as the protrusions 37a and 37b, located on the edge opposite to that comprising the protrusions 37a and 37b. Like protrusion 37b, this third protrusion 37c limits the rotational movement of said stopper 9 and in particular the exit of stopper 9 from its standby position and its engagement towards the position of use.

In these four embodiments shown in figures 8 to 17 , said neck 7 may also comprise a guide ramp 43 configured to cooperate with at least one projecting element 39 of said cap 9 to position one of said projecting elements at the entrance 41a of said groove 41. The guide ramp 43 makes it possible to guide one of the projecting elements 39a of the stopper 9 into the first portion 41b of the guide groove 41. Said guide ramp 43 is visible at figure 10 .

Advantageously, said guide ramp 43 has a guide direction opposite to the guide direction of said groove 41 for the passage of said stopper 9 from the standby position to the use position and/or from the use in the closed position. Thus, to position one of said projecting elements 39 of said plug 9 in the entrance to said groove 41, it is necessary to make a rotational movement in a direction opposite to that which will be operated in the groove. This rotational movement is generally carried out by a machine in an automated manner. Once said stopper 9 has been placed in the waiting position, it is necessary to make a rotational movement in a direction opposite to that applied in the guide ramp, generally in the conventional direction of rotation for closing a stopper 9 which is generally in a clockwise direction, this to remove the stopper 9 from the standby position and initiate the position of use and the cutting and/or perforation of the said lid 15 by the punch 17. This double direction of rotation , makes it possible to prevent the machine, when placing the stopper 9 in the waiting position, from performing too great a rotation, starting a passage into the position of use and that the punch 17 damages the lid 15 before the use of the tube.

Advantageously, said ramp 43 may also include a stop 45 to force one of said projecting elements 39 of plug 9 to stop at the entrance 41a of groove 41. Here, stop 45 is an extension of an edge of the first portion 41b of the groove 41 towards the orifice 7a of the neck 7.

In these four embodiments shown in figures 8 to 17 , the cap 9 is identical. As mentioned previously, it comprises at least one protruding element 39 configured to cooperate with said protruding elements 37a, 37b, 37c of said neck 7 to hold said stopper 9 in the standby position and to cooperate with said groove 41 of said neck 7 to allow said rotational movement and / or said axial movement for the passage of said stopper 9 from the standby position to the use position and / or from the use position to the closed position.

Advantageously, said stopper 9 comprises at least two projecting elements 39. Preferably, said stopper 9 comprises three projecting elements 39, which makes it possible to balance and stabilize stopper 9 when it is in the standby position.

Advantageously, the projecting element or elements 39 of said stopper 9 are located on the lower part of said stopper 9 and are made from material thereof.

Advantageously, an upper surface 47 of said stopper 9 has at least one opening 49 in line with the projecting elements 39 of said stopper 9. These openings 49 are used in particular for molding the stopper 9 and more particularly for molding the projecting elements 39. Thus , the number of openings 49 is identical to the number of projecting elements 39 of said cap 9.

In the cap 9 shown here, said projecting elements of the cap 9 are pins 39 of substantially similar diameter to the width of the guide grooves 41 to allow the pins 39 to be guided by them. Here, the stopper 9 comprises three pins 39 regularly distributed over the lower part of said stopper 9 and three openings 49 on its upper surface 47 in line with the pins 39.

To seal the tube when the plug 9 is in the closed position, said plug 9 comprises on the inner face of its upper surface an extra thickness of material corresponding to a sealing ring 51 located radially set back from said openings 49. Said sealing ring 51 is configured to cooperate with a ring seat 53, provided on an inner surface of the neck, at the upper end of said neck 7, when said plug 9 is in the closed position as can be seen on the figure 16b .

The edges of said groove 41 may also include at least one protuberance located in the last portion 41e allowing the stopper to be held in the closed position.

For example, as illustrated in figure 17 , each edge may include a protrusion 59a and 59b. These protrusions 59a, 59b not only keep the plug in the closed position, but can also serve as a closure indicator for the user. Thus, the resistance felt by the user when the projecting elements 39 cross the two protrusions 59a and 59b, makes it possible to indicate to him that the stopper is at the end of its travel, that the latter is correctly closed and that the seal is ensured. These characteristics are represented here in conjunction with the figure 17 but can also be generalized.

Different steps for placing the stopper 9 in its standby position and for passing it from the standby position to the use position and from its use position to its closed position will now be described. These steps refer to the embodiment of the groove 41 shown in figures 10 to 16 .

Initially, said stopper 9 is fixed on said neck 7 in its standby position. For this, the protruding elements 39a of said cap 9 are guided in the guide ramp 43 by a rotational movement in the counter-clockwise direction. This step is visible in figure 13 .

The projecting elements 39a of the stopper 9 are then placed in the entrance 41a of the corresponding grooves 41 at their first portion 41b. They are held in abutment towards the right by the extension 45 of the first portion 41b of the groove 41 and downwards by the first lug 37a of the said neck 7.

Said cap 9 is then placed in its standby position by an axial movement downwards, in which each projecting element 39a engaged in the groove 41 is snapped in beyond the first lug 37a. Said stopper 9 is then held in the waiting position by means of the first 37a and second 37b lugs which limit its movement to the left (rotation) and upwards (translation) as described previously. This standby position is visible to figures 14a and 14b .

By a first helical movement, each projecting element 39a of said stopper 9 engaged in the groove 41 at the level of the second portion 41c is snapped on beyond the second lug 37b and the stopper 9 comes out of the waiting position. This step and visible to figures 15a and 15b .

Then by a second helical movement generated by the third portion 41d of the groove 41, the projecting element 39a passes into the position of use in which the cover is perforated.

The helical movement finally ends when each projecting element 39a engaged in the groove 41 reaches an abutment position located at the end of the last portion 41e of the groove 41. The stopper 9 is then in the closed position visible to the figures 16a and 16b .

To remove said cap 9, the user performs the steps in the opposite direction.

In the other embodiments of the guide groove 41 shown in figures 8, 9 and 17 , the various steps for placing the stopper 9 in its standby position and for its passage from the standby position to the use position and from its use position to its closed position are substantially similar.

Claims (15)

Assembly (1) for closing a tube (3), said assembly (1) comprising: - a tube head (5) comprising a neck (7) and a lid (15) closing said neck (7) - a cap (9) comprising a punch (17) adapted to cut out said lid (15), said neck (7) and said stopper (9) being configured to make it possible to maintain said stopper (9) fixed to said neck (7) in a first position, called the waiting position in which the punch (17) is held at a distance of the lid (15) and in a second position, called the use position, in which said punch (17) pierces said lid (15), and in a third position, called the closed position, in which said neck (7 ) and said cap (9) seal said tube, said plug (9) being configured to pass from the standby position to the use position and/or from the use position to the closed position by at least one rotational movement, wherein said cap (9) and said neck (7) define a longitudinal axis ZZ, and wherein said cap (9) is configured to pass from the standby position to the use position and/or from the use in the closed position also by an axial movement along the ZZ axis, said neck (7) comprising at least one first blocking means cooperating with said stopper (9) to hold said stopper (9) in the waiting position, said neck (7) comprising at least one guide groove (41) configured to cooperate with said stopper (9) to allow a rotational movement and/or an axial movement for the passage of said stopper (9) from the waiting position to the use position and/or from the use position to the closed position, the said first blocking means(s) being protrusions (37a, 37b, 37c) of the edges of the said groove (41) extending towards the inside of the groove (41), said groove (41) having successive guide portions. Assembly (1) according to the preceding claim, in which said neck (7) comprises an upper end located close to an outlet orifice (7a) and a lower end opposite to said upper end, said groove (41) extending on the outer surface of said neck (7) from the upper end to the lower end of the neck (7). Assembly (1) according to any one of the preceding claims, in which the successive guide portions comprise at least a first portion (41b) providing the standby position and one or more other portions allowing passage from the standby position to the use position and/or from the use position to the closed position. Assembly (1) according to any one of the preceding claims, in which the successive guide portions comprise a first portion (41b) ensuring the standby position, followed by a second portion (41c) enabling said stopper (9) to be removed from the standby position, then followed by a third portion (41d) allowing passage of said stopper (9) to the use position, then followed by a last portion (41e) allowing passage of said stopper (9) into position closing. Assembly (1) according to the preceding claim, in which the first portion (41b) is vertical with respect to the axis ZZ, the second portion (41c) is helical with a slope x, the third portion (41d) is helical with a slope y , the last portion (41e) is horizontal with respect to the axis ZZ. Assembly (1) according to the preceding claim, in which the groove (41) has a first protrusion (37a) located at an entrance (41a) of the first portion (41b) of the groove (41) and configured to limit the axial movement upwards along the axis ZZ of said stopper (9). Assembly (1) according to any one of claims 4 to 6, in which the groove (41) has a second protrusion (37b) located between the first portion (41b) and the second portion (41c) of the groove (41) and configured to limit the rotational movement of said cap (9) and its exit from the standby position to the use position. Assembly (1) according to any one of claims 6 or 7, in which the groove (41) has a third protrusion (37c) located on an edge opposite to that comprising the protrusions (37a) and/or (37b) and configured to limiting the rotational movement of said cap (9) and its exit from the standby position to the use position. Assembly (1) according to any one of claims 1 to 8, in which said stopper (9) comprises at least one projecting element (39) configured to cooperate with said protrusions (37a, 37b, 37c) of said neck (7) to maintain said stopper (9) in the standby position. Assembly (1) according to the preceding claim, in which the said projecting element or elements (39) of the said plug (9) are configured to cooperate with the said groove (41) of the said neck (7) to allow the said rotational movement and/or the said axial movement for the passage of said stopper (9) from the standby position to the use position and/or from the use position to the closed position. Assembly (1) according to any one of claims 9 or 10, in which the projecting element or elements (39) of said plug (9) are located on the lower part of said plug (9). Assembly (1) according to any one of claims 9 to 11, in which said neck comprises a guide ramp (43) configured to cooperate with said at least one projecting element (39) of said cap (9) to position said element projecting at the entrance to said groove (41), said guide ramp (43) having a guide direction opposite to a guide direction of said groove (41) for passage of said stopper from the standby position to the use position and/or from the use position to the closed position. Assembly (1) according to the preceding claim, in which said guide ramp (43) comprises an abutment (45) configured to force the stopping of one of said projecting elements (39) of the cap (9) at the level of the entrance (41a) of the groove (41). Assembly (1) according to any one of Claims 4 to 13, in which each edge of the said guide groove (41) comprises at least one protrusion (59a, 59b) configured so as to maintain the stopper (9) in the closed position. , said protrusions (59a, 59b) being located in the last portion (41e) of said groove (41). Tube (3) comprising a closure assembly (1) according to any one of the preceding claims.

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