EP3426570B1 - System having frangible bridges - Google Patents

Description

The present invention relates to an add-on device for a threaded neck of a reservoir, more particularly to an add-on device comprising a pump for distributing the fluid contained in the reservoir.

In known manner, pharmaceutical products are sold commercially in bottles. These bottles most of the time include a threaded neck reservoir onto which an attached device is screwed, forming, for example, a dosing pump.

• un remplissage aisé du réservoir sans outillage particulier et,
• le vissage d'un grand nombre de dispositifs rapportés de types différents sur différents types de réservoirs présentant un même type de col fileté, offrant ainsi une grande adaptabilité du flacon aux différents dispositifs existants.

Such a bottle has the double advantage of allowing:

• easy filling of the tank without special tools and,
• the screwing of a large number of different types of add-on devices on different types of tanks having the same type of threaded neck, thus offering great adaptability of the bottle to the different existing devices.

Currently, in the state of the art, there are various main standards for threaded necks of reservoirs derived from the GCMI standard, used in particular for pharmaceutical products, standards with which the suppliers of added devices must adapt their devices. The differences in characteristics specific to the threaded necks of known standards, such as for example the diameter, induce variations in the torque to be applied to a device added when it is screwed onto the threaded neck of a tank. Thus, within the same threaded neck standard, there is a problem known to those skilled in the art: the identical reproducibility of a threaded neck, for example the diameter, from one bottle to another, is not insured. In other words, two bottles provided with threaded necks of the same standard may have slightly different geometries and therefore require different screwing torques, in order to obtain optimal screwing. This problem of identical reproducibility, within the same standard, arises when changing the tank material, but also when using the same material, in particular for glass tanks for which a reproduction identically is very complicated. This problem is reinforced by the fact that the GCMI standard tolerates wide dimensional ranges.

Therefore, in an assembly line of devices attached to threaded necks, there is a risk of applying too great a tightening torque to an attached device, which can cause degradation of the threaded neck of the reservoir and / or the device reported. Degradation of the threaded neck of the reservoir can result in the breakage of the bottle or in a crack in the structure of the bottle, which can result in subsequent breakage of the bottle. The degradation of the attached device can, in turn, cause a loss of tightness of the bottle and attached device assembly.

One solution envisaged consists in adapting the screwing torque applied in the assembly line to each change of standard of the threaded neck of the tank and of the attached device, in order to determine a threshold screwing torque suitable for all possible variations of threaded necks within the same standard. This solution has the drawback of requiring a long adjustment for the empirical determination of the adequate screwing torque, adjustment during which the assembly line is greatly slowed down, or even stopped, which results in a reduction in the general efficiency of the line. assembly. In addition, this period of determining the appropriate tightening torque must be repeated each time the threaded neck of the tank changes standard, or even with each new batch of bottles used.

In the patent application FR3021636 , it has already been envisaged to equip an added device, composed of two rings, one internal, the other external, with means for rotationally coupling these releasable rings by relative axial displacement between the rings. In one of the embodiments described, the outer ring has multiple frangible stops cooperating with teeth provided on the inner ring to couple the inner and outer rings in rotation. These frangible stops are capable of being retracted by deformation when a threshold torque is applied when the internal ring is screwed onto the threaded neck. However, such a device does not make it possible to avoid with certainty an oversteering of the internal ring on the threaded neck of the reservoir. On the contrary, such overstepping is even encouraged in this request. Consequently, an uncertainty as to the rupture of the coupling means for a threshold screwing torque, can have the consequence of too great a screwing, which leads to the degradation of the threaded neck of the reservoir, as explained above, but also in some cases, a screwing. non-optimal, which does not allow the coupling means to be broken and therefore offers the possibility of unscrewing the added device using the external ring. Such a possibility of unscrewing the device using the outer ring may be contrary to the regulations on secure closure systems applied to certain pharmaceutical products, commonly called CRC corresponding to the English acronym for “Child-Resistant-Closure”. In addition, by voluntarily or involuntarily exerting a certain axial pressure between the two rings, it is possible to force the coupling between the internal and external rings, and thus, make it possible to withdraw the added device from the threaded neck.

The object of the invention is to remedy these drawbacks by providing an attached device for a threaded neck of the reservoir, the attached device comprises a first ring provided with a thread which allows the first ring to be screwed onto a threaded neck of the reservoir and a second ring, integral in rotation with the first ring using at least one coupling member distinct from at least one of said first and second rings and which comprises at least one coupling zone with the at least one first, second ring from which it is distinct. The added device according to the invention is characterized in that the coupling member comprises at least one rupture zone distinct from said coupling zone, designed to rupture from a threshold torque applied between said first and second rings when a certain torque is applied to the second ring when screwing the device attached to the threaded neck of the tank.

In the present description, the expression "first, second ring" means "first ring or second ring".

The device according to the invention thus makes it possible to dissociate the coupling and rupture zones. The rupture of the coupling means of the attached device according to the invention is effective with great precision, when a certain torque is applied to the second ring, because the result of the forces exerted on the coupling zone, due to the resistance to screwing which opposes the torque imposed on the attached device, is intended to be transferred to the rupture zone of the coupling member. Therefore, to predict with certainty the rupture of the coupling means for a predefined torque, it is no longer necessary to take into account partial deformations or ruptures of the coupling zones in mutual support with one of the first and second rings, as is the case for a device reported according to the state of the art, in which the coupling zone and the rupture zone are merged. This break obtained with certainty, as soon as the threshold torque is reached, ensures both the optimal screwing of the device attached to the threaded neck of the reservoir and the protection of the bottle against breakage. In fact, the rupture of the coupling means causes the first ring and the second ring to separate in rotation, which allows the second ring to rotate freely relative to the first ring. It is therefore impossible to further screw the internal ring of the device attached to the threaded neck of the reservoir by applying a torque to the second ring, which protects the bottle and / or the device attached against breakage due to excessive tightening of the device reported. After decoupling the first and second rings, even an axial pressure exerted to tend to bring the rings closer together does not make it possible to obtain their coupling in rotation. Thus, it is impossible to unscrew the first ring and remove the added device from the threaded neck.

In this application, the adjective "distinct" means an absence of volume of matter in common. In other words, any organ or any zone distinct from another organ or from another zone does not share any volume of matter with this other organ or this other zone.

The threshold torque is a torque, predefined for a given standard of threaded tank necks, from which the threaded tank necks of said standard are very likely to be damaged by the screwing of the added device. In other words, the threshold torque is specific to each standard of threaded necks.

The elements of an attached device according to the invention can be obtained by any known molding process, preferably by an injection molding process. They can be made of any material suitable for such processes, preferably polyethylene (PE), high density polyethylene (HDPE) and polypropylene (PP).

Advantageously, the coupling member is in one piece with the ring from which it is not distinct. The whole in one piece, "coupling member-ring", can be obtained by the methods and from the materials mentioned.

The coupling member of an add-on device according to the invention is composed, at least, of a coupling zone and of a rupture zone distinct from the coupling zone. The rupture zone of the coupling member is designed to rupture when it undergoes the result of an excessive torque applied between the first ring and the second ring, that is to say during the application, on the attached device, of a torque which reaches or exceeds the threshold torque for which the rupture of the coupling member is provided.

Advantageously, the coupling member is arranged around the first ring provided with the thread.

Even more advantageously, the coupling member comprises a ring whose diameter is greater than the outside diameter of the first ring and less than the outside diameter of the second ring, it being understood that the diameters considered are measured at the height of the ring.

The at least one coupling zone of the coupling member, which allows the coupling between the coupling member and the first, second ring whose coupling member is separate, can comprise any known means allowing the rotation to be secured to the added device, as a whole, during the assembly of said added device. By way of nonlimiting example, it is conceivable that the coupling region of the coupling comprises at least one tooth capable of being housed in an orifice or a bore in the first, second ring, the coupling member of which is distinct.

The at least one rupture zone of the coupling member, in which the rupture takes place between the coupling member and the first, second ring integral with the coupling member, is not necessarily limited to the exact location of the coupling member where the rupture occurs. It can include any known means which allows the desired rupture. By way of nonlimiting example, such a means can be a breakable bridge, preferably several breakable bridges, arranged around the first, second ring with which the coupling means is in one piece, the shape of these bridges allowing their failures ensured when a torque equal to or greater than the predefined threshold torque is applied. Such a means can also be one or more tongues of material, connecting the first, second ring and the coupling member, such tongues are provided for all to tear when a torque equal to or greater than the threshold torque preset is applied to the attached device.

• à égale distance de la première, deuxième bague et du reste de l'organe de couplage,
• qu'au plus proche de la première, deuxième bague, ou
• qu'au plus proche du reste de l'organe de couplage.

The exact location of the coupling member where the rupture occurs can be anywhere in the rupture zone. For example, this exact location could also be:

• equidistant from the first, second ring and the rest of the coupling member,
• as close to the first, second ring, or
• as close to the rest of the coupling member.

In a particular embodiment, the attached device comprises a pump for distributing a fluid immersed in the reservoir, which is carried by the first ring.

In another particular embodiment, the second ring completely surrounds the first ring provided with the thread, so that it is impossible to access the first ring once the device is attached to the threaded neck of the reservoir. Therefore, once the rupture zone of the coupling member is broken, it is impossible to exert any rotational force on the first ring, thereby securing the screwing of the first ring on the threaded neck . As a result, it becomes impossible to overstep or unscrew the first ring.

According to a first embodiment of an attached device according to the invention, this the latter comprises a first ring provided with a thread, a second ring and a coupling member, in one piece with the first ring, which allows the rotational solidarity of the two first and second rings. The coupling member, according to the first embodiment of the invention, may be composed of a ring of diameter slightly greater than the outside diameter of the first ring, to which it is connected, in one piece, by at minus a breakable means. This ring is also composed of at least one means which allows coupling with the second ring. In this way, when a torque greater than the defined threshold torque is applied to the attached device, the breakable means is broken. This rupture of the breakable means results in the separation of the ring of the coupling means and the first ring. Therefore, the ring, which is always coupled to the second ring, continues to be rotatably integral with the second ring and therefore to rotate when a torque is applied to the device added through the second ring but no longer drives the first ring, which remains stationary.

According to a second embodiment of a device reported according to the invention, the coupling member is in one piece with the second ring and not with the first ring, as is the case for the first embodiment previously described. Therefore, the device added according to the second embodiment comprises a first ring provided with a thread, a second ring and a coupling member, in one piece with the second ring, which allows solidarity in rotation of both first and second rings. The coupling member, according to the second embodiment of the invention, can be composed of a ring of diameter slightly smaller than the outside diameter of the second ring to which it is connected, in one piece, by at least a breakable means, this ring also being composed of at least one means which allows coupling with the first ring. In this way, when a torque greater than the defined threshold torque is applied to the attached device, the breakable means is broken. This rupture of the breakable means results in the separation of the ring from the coupling means and from the second ring. Therefore, the first ring and the ring, which are always coupled and integral in rotation, remain stationary when a torque is applied to the device added through the second ring.

Advantageously, the second ring is a “Child-Resistant-Closure ” (CRC) ring designed to be able to be combined with a “ Child-Resistant-Closure ” (CRC) cap. Therefore, it adds to the impossibility of unscrewing mentioned, the advantage provided by a CRC cap, namely a safety against accessibility for a child from the pump. Consequently, the bottle-cap assembly becomes completely impossible to open for a child.

The invention also relates to a method of assembling add-on devices, such as those described above, on threaded necks of the tank, the method comprising the application of a screwing torque to the add-on devices, characterized in that the applied screwing torque is greater than or equal to a threshold rotation torque, the threshold rotation torque being predefined as a function of the standard of the threaded necks of the reservoir to be assembled.

The method therefore has the advantage of offering high repeatability, when applied to an assembly line, without it being necessary to worry if the torque applied risks causing overshoots which are harmful to the bottle. and / or the attached device. Therefore, as soon as the threshold torque is programmed according to the standard of the threaded necks of the tank to be assembled, the assembly line no longer requires stops or slowdowns due to the fact that the threaded necks of the tanks have slight differences from one threaded neck of the tank to another, which ensures high efficiency on the assembly line.

The invention also relates to a bottle comprising an attached device, as described above, and a threaded neck tank.

• La figure 1 représente un flacon comprenant un dispositif rapporté selon un premier mode de réalisation.
• La figure 2 est une coupe transversale selon le plan II-II du flacon représenté à la figure 1.
• Les figures 3 et 3a représentent une première bague d'un seul tenant avec un organe de couplage et une deuxième bague d'un dispositif rapporté selon le premier mode de réalisation.
• Les figures 4 et 5 sont deux coupes transversales respectivement selon les plans IV-IV et V-V de la figure 3a.
• Les figures 6a, 7a, 8a et 9a, illustrent quatre étapes différentes d'un procédé d'assemblage d'un dispositif rapporté, selon le premier mode de réalisation, sur un col fileté de réservoir (le capuchon et la deuxième bague étant volontairement masqués).
• Les figures 6b, 7b, 8b et 9b, sont des coupes transversales selon les plans VI-VI de l'assemblage respectivement des figures 6a, 7a, 8a et 9a (le capuchon et la deuxième bague étant volontairement masqués).
• La figure 10 représente un flacon CRC comprenant un dispositif rapporté CRC, selon un premier mode de réalisation.
• La figure 11 est une coupe transversale selon le plan XI-XI du flacon représenté à la figure 10.
• La figure 11a représente un agrandissement de la coupe représentée à la figure 11.
• Les figures 12 et 12a représentent une première bague d'un seul tenant avec un organe de couplage et une deuxième bague du dispositif rapporté CRC des figures 10 à 11a.

The invention will be better understood on reading the appended figures, which are provided by way of examples and have no limiting character, in which:

• The figure 1 shows a bottle comprising an attached device according to a first embodiment.
• The figure 2 is a cross section along plane II-II of the bottle shown in figure 1 .
• The Figures 3 and 3a represent a first ring in one piece with a coupling member and a second ring of an attached device according to the first embodiment.
• The Figures 4 and 5 are two cross sections respectively according to planes IV-IV and VV of the figure 3a .
• The Figures 6a, 7a , 8a and 9a , illustrate four different stages of a method of assembling an attached device, according to the first embodiment, on a threaded neck of the reservoir (the cap and the second ring being intentionally masked).
• The Figures 6b, 7b , 8b and 9b , are cross sections according to planes VI-VI of the assembly respectively of Figures 6a, 7a , 8a and 9a (the cap and the second ring being purposely masked).
• The figure 10 represents a CRC bottle comprising a CRC attached device, according to a first embodiment.
• The figure 11 is a cross section along the plane XI-XI of the bottle shown in the figure 10 .
• The figure 11a represents an enlargement of the section shown in the figure 11 .
• The Figures 12 and 12a represent a first ring in one piece with a coupling member and a second ring of the CRC attached device of figures 10 to 11a .

We now refer to the figure 1 , which represents a bottle 1 comprising an attached device 2, according to a first embodiment of the invention, and a reservoir 3 with a threaded neck 4. The attached device 2 comprises a first ring 8 (visible on the figure 2 ), in one piece with a coupling member 10 (shown in the figure 3 ), a second ring 9, which completely surrounds the first ring 8, a distribution pump 5 provided with a nozzle 6 and a cap 7. The cap 7 is snapped onto the second ring 9, which for this purpose has a bead d 'snap 9a (visible on Figures 3a and 4 ). When handling the attached device 2, for its mounting on the threaded neck 4, the attached device 2 can be gripped by the cap 7 or by the laminated external face of the second ring 9. In both cases, the assembly consisting of the cap 7 and the second ring 9 is considered to be a single piece, due to the snapping of one onto the other, and any screwing torque applied to the cap 7 amounts to a screwing torque applied to the second ring 9 and reciprocally.

The coupling member 10 comprises two coupling zones with the second ring 9, each composed of a tooth 12 with a bevelled free end, which will be designated hereinafter “oriented clip”, capable of being housed in an orifice 13 of the second ring 9.

On the figure 2 , the attached device 2 can be observed completely screwed onto the reservoir 3, thanks to the first ring 8 provided with a thread, which is screwed onto the threaded neck 4 of the reservoir 3. The first ring 8 is in one piece with the coupling member 10, which comprises the oriented clips 12 each housed in an orifice 13 in the second ring 9. The two oriented clips 12 thus ensure coupling with the second ring 9, which has the effect of securing in rotation l 'assembly of the attached device 2. Each oriented clip 12 thus defines a coupling zone.

The figure 3 represents the first ring 8, in one piece with the coupling member 10, and the second ring 9, before coupling of the two first and second rings 8 and 9. The coupling member 10 comprises a plurality of rupture zones , distinct from the two coupling zones. These rupture zones are composed, in the mode of embodiment described, of six breakable bridges 11 distributed around the first ring 8, the breakable bridges 11 being able to break from a threshold torque applied between said first and second rings 8 and 9. Finally, the member coupling 10 also comprises a ring 14, of a diameter greater than the outside diameter of the first ring 8 and less than the outside diameter of the second ring 9, which provides the connection between the rupture zones of the coupling member 10 and the coupling zones of the coupling member 10.

The figure 3a represents the first ring 8 in one piece with the coupling member 10 and the second ring 9 after insertion of the first ring 8 in the second ring 9 and coupling together by snap-fastening of the oriented clips 12 inside the orifices 13.

On the Figures 4 and 5 , it is possible to observe in more detail the coupling between the first ring 8 provided with a thread, allowing the screwing on the threaded neck 4 of the reservoir 3, and the second ring 9, thanks to the oriented clips 12 of the ring 14 which is connected to the first ring 8 by the breakable bridges 11. Such breakable bridges 11 are capable of breaking from a predefined threshold torque applied between said first and second rings 8 and 9.

The Figures 6a, 7a , 8a and 9a are illustrations of different stages in the assembly of an attached device 2 of Figures 1 to 5 , on a tank 3. Each of the assembly steps illustrated in Figures 6a, 7a , 8a and 9a is to be analyzed in combination with the corresponding cross section, respectively represented on the Figures 6b, 7b , 8b and 9b . These cross sections are made according to plan VI-VI present on each of the Figures 6a, 7a , 8a and 9a . For clarity, the cap 7 and the second ring 9 have been deliberately masked in these figures but since the coupling member 10 is snapped into the second ring 9, any screwing torque applied to the device 2 attached from the outside, that is to say on the cap 7 or on the second ring 9, is applied to the coupling member 10.

The Figures 6a and 6b represent a bottle 1 not assembled, before the attached device 2 comes into contact with the threaded neck 4 of the reservoir 3. During this stage of assembly, which aims to obtain the bottle 1 of the figure 1 , no screwing torque has yet been applied to the added device 2. Therefore, no breakage of the breakable bridges 11 is possible and the first ring 8 remains in one piece with the coupling member 10. By Consequently, the first ring 8 also remains integral in rotation with the second ring 9 (not shown in these figures), thanks to the oriented clips 12 of the coupling member 10 positioned in the orifices 13 of the second ring 9 of the attached device 2 .

The Figures 7a and 7b represent the bottle 1 being assembled. The device reported 2 is at the start of screwing on the threaded neck 4 of the reservoir 3. During this assembly step which aims to obtain the bottle 1 of the figure 1 , a screwing torque is applied to the attached device 2, therefore to the coupling member 10. As the first ring 8 does not encounter any obstacle when it is screwed onto the threaded neck 4, apart from friction, the torque of rotation applied between the first and second rings 8 and 9 is equal to the resistive torque due to friction. This torque is not yet greater than or equal to the predefined threshold torque. Therefore, as for the previous step, no breakage of the breakable bridges 11 is possible and the first ring 8 remains in one piece with the coupling member 10. Consequently, the first ring 8 also remains integral in rotation with the second ring 9 (not shown in these figures), thanks to the oriented clips 12 of the coupling member 10 positioned in the orifices 13 of the second ring 9 of the attached device 2.

The Figures 8a and 8b represent the bottle 1 being assembled. The attached device 2 is close to the end of the screwing on the threaded neck 4 of the reservoir 3. At this stage of assembly, the first ring 8 encounters a force resistant to rotation during its screwing on the threaded neck 4 and the torque between the two first and second rings 8 and 9 is equal to the resistant torque opposed by the threaded neck 4. However, the result of the forces transferred to the breakable bridges 11 has not reached the threshold for which the breakable bridges 11 break. Therefore, as before, no breakage of the breakable bridges 11 is effective, the first ring 8 remains in one piece with the coupling member 10 and also remains integral in rotation with the second ring 9 (not shown in these figures), thanks to the oriented clips 12 of the coupling member 10 positioned in the orifices 13 of the second ring 9 of the attached device 2.

The Figures 9a and 9b represent the bottle 1 at the end of assembly. To obtain the bottle 1, shown at this stage, the torque applied between the first and second rings 8 and 9 increased suddenly after the complete fitting of the device 2 on the threaded neck 4 of the reservoir 3. maximum possible of this torque is equal to the tightening torque. This maximum possible is greater than or equal to the predefined torque, from which the breakable bridges 11 of the rupture zone of the coupling member 10 are provided to rupture. In other words, the result of the forces exerted on the two coupling zones of the coupling member 10, due to the torque imposed on the added device 2, transferred to the breakable bridges 11 of the coupling member 10, has crossed the threshold from which the breakable bridges 11 break. Consequently, the breakable bridges 11 are broken and form half-bridges 11 '. Consequently, the first ring 8 is no longer in one piece with the ring 14 of the coupling member 10, which remains coupled to the second ring 9, by means of the oriented clips 12. As a result, the first ring 8 is no longer rotationally attached to the second ring 9 (not shown in these figures) which therefore rotates freely around the first ring 8. In other words, when a torque, in the direction of screwing or unscrewing, is applied to the added device 2, via the second ring 9, the first ring 8 is not driven by the rotation of the second ring 9, even when an axial force is exerted to tend to bring the first and second rings 8, 9 closer together. one from the other. Because the second ring 9 completely surrounds the first ring 8, it is therefore therefore impossible to overstep the first ring 8 on the threaded neck 4 of the reservoir 3 or to unscrew it from the latter.

According to an alternative embodiment not shown, these orifices 13 could be non-opening and closed by the outer wall of the second ring 9. Whatever the embodiment, these oriented clips 12 are ineffective for separating the first ring 8 from the threaded neck 4 from tank 3.

The figure 10 represents a CRC 101 bottle which includes a CRC 102 attached device according to the first embodiment of the invention, and a tank 103 with threaded neck 104. As illustrated in the Figures 11 and 11a , the CRC 102 add-on device comprises a distribution pump 105 provided with a nozzle 106, a CRC cap 107, a first ring 108 in one piece with a coupling member 110, and a second ring 109 which completely surrounds the first ring 108. The coupling member 110 comprises two coupling zones with the second ring 109, each composed of an oriented clip 112 oriented capable of being housed in an orifice 113 of the second ring 109. The second ring 109 of the device CRC 102 insert includes a thread, allowing the CRC 107 cap to be screwed in, and two external clips 115, allowing secure coupling between the CRC 107 cap and the second ring 109. In other words, in addition to the impossibility of dissociating the CRC 102 attached device of the reservoir 103, once the cap 107 is screwed and coupled to the second ring 109 of the CRC 102 attached device, it is extremely complicated, and preferably impossible, for u n child to disassemble the cap 107 of the second ring 109. Consequently, the pump 105 and the contents of the bottle 101 become inaccessible for a child.

On the figure 11 , the CRC 102 attached device can be observed, completely screwed onto the reservoir 103 thanks to the first ring 108 provided with a thread, which is screwed onto the threaded neck 104 of the reservoir 103. The first ring 108 is in one piece with the coupling member 110, which comprises the two oriented clips 112 each housed in an orifice 113 in the second ring 109. The two oriented clips 112 provide the coupling with the second ring 109, which has the effect of securing in rotation the whole of the CRC 102 attached device.

The figure 11a represents an enlargement of the section shown in the figure 11 , more particularly representing the screwing area between the CRC 102 attached device and the reservoir 103. It is possible to observe the arrangement of the breakable bridges 111 and of the ring 114 of the coupling member 110, as well as the clips external 115 of the second ring 109.

The figure 12 represents the first ring 108, in one piece with the coupling member 110 and the second ring 109, before coupling of the two first and second rings 108 and 109. The coupling member 110 comprises a rupture zone, distinct from the two coupling zones, which is composed, in the embodiment described, of six breakable bridges 111, distributed around the first ring 108 and capable of breaking from a threshold torque applied between said first and second rings 108 and 109. Finally, the coupling member 110 also comprises a ring 114 with a diameter greater than the outside diameter of the first ring 108 and less than the outside diameter of the second ring 109, which provides the connection between the rupture zone of the coupling member 110 and the two coupling zones of the coupling member 110. Finally, the second ring 109 of the CRC 102 attached device comprises two external clips 115 which allow secure coupling between CRC cap 107 and the second ring 109.

The figure 12a represents the first ring 108 in one piece with the coupling member 110, and the second ring 109 after insertion of the first ring 108 in the second ring 109 and coupling together by snap-fastening of the oriented clips 112 inside the ports 113.

1,101

flacon

2, 102

dispositif rapporté

3, 103

réservoir

4, 104

col fileté

5, 105

pompe de distribution

6, 106

embout

7, 107

capuchon

8, 108

première bague

9, 109

deuxième bague

9a

bourrelet d'encliquetage

10, 110

organe de couplage

11, 111

pontets sécables

11'

demi-pontets

12, 112

dent (clip orienté)

13, 113

orifice

14, 114

anneau

105, 11

clips externes

The invention is not limited to the embodiments presented and other embodiments will be apparent to those skilled in the art.

1,101

bottle

2, 102

reported device

3, 103

tank

4, 104

threaded collar

5, 105

distribution pump

6, 106

mouthpiece

7, 107

cap

8, 108

first ring

9, 109

second ring

9a

ratchet bead

10, 110

coupling member

11, 111

breakable bridges

11 '

half-jumpers

12, 112

tooth (oriented clip)

13, 113

orifice

14, 114

ring

105, 11

external clips

Claims (9)

1. Accessory device (2; 102) for threaded neck (4; 104) of container (3; 103), the accessory device (2; 102) comprises a first ring (8; 108) provided with a thread to screw the first ring (8; 108) on a threaded neck (4; 104) of container (3; 103) and a second ring (9; 109), integral in rotation with the first ring (8; 108) using at least one coupling member (10; 110) separate from at least one of said first and second rings (8; 108, 9; 109) and which comprises at least one coupling area for coupling with the at least one first, second ring (8; 108, 9; 109) from which it is separate,
   characterised in that the coupling member (10; 110) comprises at least one rupture area separate from said coupling area, designed to break above a rotation torque threshold applied between said first and second rings (8; 108, 9; 109) when a certain torque is applied to the second ring (9; 109) when the accessory device (2; 102) is screwed on the threaded neck (4; 104) of the container (3; 103).
2. Accessory device (2; 102) according to claim 1, characterised in that the coupling member (10; 110) comprises an annulus (14; 114) whose diameter is greater than the outer diameter of the first ring (8; 108) and less than the outer diameter of the second ring (9; 109).
3. Accessory device (2; 102) according to claim 1 or 2, characterised in that the coupling area of the coupling member (10; 110) comprises at least one tooth (12; 112) adapted to fit in an orifice (13; 113) or a borehole of the first, second ring (8; 108, 9; 109) from which the coupling member (10; 110) is separate.
4. Accessory device (2; 102) according to any one of the preceding claims, characterised in that the rupture area of the coupling member (10; 110) comprises at least one divisible bridge (11; 111), arranged around the first, second ring (8; 108, 9; 109), made in one piece with the coupling member (10; 110).
5. Accessory device (2; 102) according to any one of the preceding claims, characterised in that it comprises a pump for dispensing a fluid carried by the first ring (8; 108).
6. Accessory device (2; 102) according to any one of the preceding claims, characterised in that the second ring (9; 109) completely surrounds the first ring (8; 108), such that it is impossible to access the first ring (8; 108).
7. Accessory device (2; 102) according to any one of the preceding claims, characterised in that the second ring (9; 109) is a "Child-Resistant-Closure" (CRC) ring designed to be capable of being combined with a "Child-Resistant-Closure" (CRC) cap (7, 107).
8. Method for assembling accessory devices (2; 102) according to any one of the preceding claims, on threaded necks (4; 104) of container (3; 103), the method comprising application of a screwing torque to the accessory devices (2; 102), characterised in that the applied screwing torque is greater than or equal to a rotation torque threshold.
9. Bottle comprising an accessory device (2; 102) according to any one of claims 1 to 7, and a container (3; 103) with a threaded neck (4; 104).

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