FR3027239A3 - DEVICE FOR CONTAINING AND DISPENSING A FLUID SUBSTANCE - Google Patents

Abstract

The device for containing and dispensing a fluid substance comprises a bag (1, 1 ') having a neck (2, 2') for housing at least a portion of a body (4A, 4'A) of a pumping element (4, 4 ') of the "airless" type; a tip member (5, 5 ') provided with a base wall (6A, 6'A) for housing and supporting the neck (2, 2') of the bag (1, 1 '); at least one sealing element (7, 7 ') provided between the neck (2, 2') of the bag (1, 1 ') and the pumping element (4, 4'), and at a first distance ( D1, D1 ') of the base wall (6A, 6'A); and at least one pedestal member (8, 8 ') comprising first connection means (8A, 8'A) adapted to connect the pumping element (4, 4') to the tip member (5, 5). '), and second connection means (8B, 8'B) adapted to cooperate with counter connection means (5B, 5'B) provided on the tip member (5, 5'), said means and against connecting means (8B, 8'B, 5B, 5'B) providing at least one coupling surface (S, S ') having a second distance (D2, D2') to the base wall (6A, 6'A) ). The second distance (D2, D2 ') is greater than or substantially equal to the first distance (D1, D1'), so as to limit any misalignment between the base element (8, 8 ') and the element forming nozzle (5, 5 ') which would compromise the seal of said seal member (7, 7').

Description

Description of an application for a utility certificate on behalf of: LUMSON S.P.A. - CAPERGNANICA (ITALY) ******* The present invention relates to a device for containing and dispensing a fluid substance according to the preamble of the main claim. Certain presently known fluid containment and dispensing devices provide a flexible bag with a neck, in which an airless pump is sealingly disposed through the interposition of a seal member placed in the neck of the bag. Patent application EP 2243557 illustrates a container of the type described above. The container comprises a tip member in which there is a seat for accommodating the neck of the flexible bag. The tip member is surmounted by a pedestal member which carries the pump, and maintains contact between the seal member, the neck of the bag and the pump. Known containers generally have a reduced transverse dimension, often providing an outer rigid body of elongate shape. With such known containers it is not easy to decorate or print text on the visible part of the side wall of the rigid outer body. The resolution of this problem involves the use of rigid outer bodies having an enlarged transverse dimension compared to that of conventional containers. To be able to insert the flexible bag more easily into an outer rigid body having an enlarged transverse dimension, the neck of the rigid outer body must also be enlarged. The neck of the bag, it retains a conventional reduced transverse dimension. To be able to mount on an outer rigid body of enlarged transverse dimension an "airless" type pump associated with a bag, it is necessary to provide a tip forming element having a transverse dimension substantially equal to that of the neck of the rigid outer body, so to be able to be fixed there. With a tip member having such a transverse dimension, it is not uncommon for misalignments to occur between the base member and the tip member. Such misalignments are likely to compromise the sealing of the seal element, which is crucial for the proper functioning of the system providing an "airless" pump associated with a flexible bag. Another problem encountered with pedestal members and forming tip of enlarged transverse dimension relates to their reciprocal assembly. To ensure a good seal of the "airless" system the base member must be mounted perfectly coaxial with the tip member. However, it happens that the base member, provided with the pump, is assembled slightly off-set relative to the tip member, thus compromising the seal between the pump and the neck of the bag. In the assembly phase of these elements, it is therefore necessary to correctly place the base element on the tip member, which involves a significant loss of time. In addition, misalignment between the pedestal member and the tip member may cause misalignment between the pump and the seat in which it is housed, resulting in a probable drop of the seal member in the bag. The drop of the seal member may also occur during normal use of the container, due to deformation of the neck of the bag under the effect of the decompression operated by the pump inside the bag. The purpose of the present invention is therefore to provide a device for containing and dispensing a fluid substance that seals the "airless" pump during use, regardless of the transverse dimension of the container. Another aim of the innovation is to provide a device for containing and dispensing a fluid substance that makes it possible to efficiently and quickly mount a pedestal element that carries the pump, regardless of the transverse dimension thereof. These and other objects are achieved by providing a device for containing and dispensing a fluid substance made according to the technical teachings of the appended claims. Other features and advantages will be apparent from the description of a preferred but not exclusive embodiment of the device for containing and dispensing a fluid substance, illustrated by way of example and therefore not limiting in the attached drawings, in which Fig. 1 is a schematic cross-sectional view of a preferred embodiment of the innovation; Figure 2 is an enlargement of the detail indicated by the circle A in Figure 1; Figure 3 is a cross-sectional view of a second preferred embodiment of the innovation; FIG. 4 is an enlargement of the detail indicated by the circle B in FIG. 3. A preferred embodiment of the device for containing and dispensing a fluid substance is illustrated in FIGS. 1 and 2. Such a device comprises: a sachet 1 having a bottom wall 1A, and a flexible side wall 1B and a neck 2 comprising an end portion 2A having a flange 3 extending transversely to the neck 2, the neck 2 defining an opening for access to the cavity of the bag 1 and for housing at least a portion of a body 4A of a pumping element 4, - a tip member 5 comprising a base body 5A having a seat 6 provided with a base wall 6A for housing and support at least the rim 3 of the end portion 2A of the neck 2 of the bag 1. The device according to this innovation is intended to be associated with a pumping element clean to create in the bag a depression (compared to the press atmospheric ion) between about 400 and 800 millibar, preferably about 600 millibar. In this pressure range the bag is completely deformed. It follows that in the present context, flexible walls are walls that are completely deformed at the pressures indicated above. Preferably, unlike the bottom wall 1A and the side wall 1B of the bag 1, the neck 2 of the bag 1 and the flange 3 are rigid. By rigid is meant that does not deform at the pressures indicated above. It is nevertheless conceivable that the neck 2 and the flange 3 are flexible too. According to the invention, the fluid substance, suitable for being contained in the bag 1, can be of any type, but preferably this substance is a cream. The pumping element 4 is of the "airless" type, and manually operated, to take the fluid substance from the bag 1 and feed it outside through a dispensing rod 4B. Such a pumping element 4 is already well known to those skilled in the art, and will therefore not be described later in the following. The device according to the invention also comprises at least one sealing element 7 provided between the end portion 2A of the neck 2 of the bag 1 and a portion of the body 4A of the pumping element 4. The seal element 7 is provided at a first distance D1 of the base wall 6A of the seat 6 to accommodate the end portion 2A of the neck 2 of the bag 1. More specifically, the seal member 7 has a median plane 7A between its upper surface 7B and its lower surface 7C (Fig. 2). The distance D1 above represents the distance between the median plane 7A of the seal member 7 and the base wall 6A of the seat 6 to accommodate the rim 3 of the neck 2 of the bag 1. It is obvious to those skilled in the art that to achieve optimum sealing, the median plane 7A of the seal member 7 and the base wall 6A of the seat 6 must be substantially parallel. The device for containing and dispensing a fluid substance also comprises at least one pedestal element 8 comprising first connection means 8A adapted to connect the pumping element 4 to the tip member 5; and second connection means 8B adapted to: - connect together the tip member 5 and the base member 8, - maintain the end portion 2A of the neck 2 of the bag 1 stably constrained to the seat 6 for housing the end portion 2A, and - keeping the seal member 7, the end portion 2A of the neck 2 of the bag 1 and a portion of the body 4A of the pumping element 4 in contact with each other. the example illustrated in FIGS. 1 and 2 the first connection means 8A comprise an internal projection adapted to be inserted into a corresponding groove 40 provided in the body 4A of the pumping element 4. But it may be otherwise. By way of example, the above-mentioned connection means 8A may be of another type, and in any case conventional to those skilled in the art. It is also noted that the seal element 7 is held in position on the body 4A of the pumping element 4 (more precisely on an upper portion of a plunger element 9 associated with the body 4A of the pumping element 4). by means of a stop element 4D provided on the same body 4A of the pumping element 4 (Figures 1 and 2). But it may be otherwise, for example it is conceivable that the seal member 7 is held in position by interference against the body 4A of the pumping element 4. Advantageously, the pedestal element 8 has, at the level of a lower surface, a lower seat 8C for housing an upper edge 2B of the end portion 2A of the neck 2 of the bag 1. The lower seat 80, in the illustrated example, comprises a groove against which the upper edge 2B of the neck 2 of the bag 1 comes into contact. More specifically, the use position of the lower seat 8C is such that when the device according to the innovation is assembled, the lower seat 80 compresses the upper edge 2B and the entire end portion 2A of the neck 2 of the bag 1 against ii the seat 6 provided in the tip member 5. As a result, the end portion 2A of the neck 2 of the bag 1 is stably held in the seat 6. It should be noted that the tip member 5 has against 5B connection means adapted to cooperate with the second connection means 8E of the base member 8 for the reciprocal connection of the two aforementioned elements, the means and against connection means 8B, 5B providing at least one coupling surface S presenting a second distance D2 to the base wall 6A of the seat 6 to accommodate the end portion 2A of the neck 2 of the bag 1 (FIG 2). It is obvious to those skilled in the art that for a simple and effective connection between the tip member 5 and the base member 8, it is preferable that the aforementioned coupling surface S is parallel to the base wall 6A of the seat 6, so as to prevent accidental disconnection of the two aforementioned elements during use of the device. In the example illustrated in FIGS. 1 and 2, the second connection means 8B comprise a toothing provided with an abutment surface, while the countermeasuring means 56 comprise a toothing provided with a counter-abutment surface. Once the toothing 8B and the toothing 5B connected to each other, the abutment surface and the abutment abutment abut against each other, forming the aforementioned coupling surface S. It is of course conceivable to provide any other type of connection means 8B and against connection means 5B adapted to interconnect the base member 8 and the tip member 5, such as a screw means and a step corresponding screw. In the case of toothing 8B and against toothing 5B, it is preferable that these are arranged coaxially and at a substantially constant distance to the seat 6 to accommodate the end portion 2A of the neck 2 of the bag 1. As an example illustrated, the means and against connection means 8B, 5B may comprise a plurality of teeth and against teeth regularly distributed around the aforementioned seat 6, and placed opposite each other. According to the present invention, the second distance D2 to the base wall 6A of the seat 6 to i3 accommodate the end portion 2A of the neck 2 of the bag 1 is greater than or equal to the first distance D1 to the base wall 6A of the seat 6 to accommodate the end portion 2A of the neck 2 of the bag 1, so as to limit any misalignment between the base member 8 and the tip member 5 which would compromise the seal of said seal member. According to a first embodiment of the innovation, illustrated in FIGS. 1 and 2, the distances D1, D2 to the base wall 6A of the seat 6 for accommodating the end portion 2A of the neck 2 of the bag 1 are essentially equal. . By essentially equal is meant that the difference between the first distance D1 and the second distance D2 is not greater than 1mm. According to an advantageous aspect of the innovation, it is preferable for the tip member 5 to have a guiding element 5D starting from said base body 5A, and having at least one guiding wall 5E, the base element 8 comprising at least one guide element 8D having at least one guide wall 8E adapted to slide along a face of said guide wall 5E when said base member 8 is connected to said tip member 5. It is preferable that the guide wall 5E of the tip member 5 is substantially parallel to the axis of symmetry of the seat 6 for accommodating the end portion 2A of the neck 2 of the bag 1 and at a substantially constant distance from the same seat 6. Advantageously, the guide wall 5E and the guide wall 8E are essentially tubular. In the example illustrated in FIG. 1, the guide wall 8E, or more precisely its outer surface, of the base member 8 is opposite the inner surface of the guide wall 5E of the endpiece element 5. It is conceivable to provide that it is the inner surface of the guiding against wall 8E facing the outer surface of the guide wall 5E. The guide wall 5E and the guide wall 8E make it possible to ensure the coaxial alignment of the base member 8 with the end-piece element 5. As a result, in the assembly phase, the operator must just deposit the base member 8 within the guiding wall 5E and then make the connection of the base member 8 once it has been guided coaxially with the tip member 5. According to an advantageous aspect of the innovation, the pumping element 4 is provided with a plunger element 9 placed inside the bag 1, the plunger element 9 forming a retaining seat 10 for the element of 7, placed inside the neck 2 of the bag 1, adapted to prevent possible falls of the seal member 7 in the bag 1. In particular the seat 10 preferably extends perpendicular to the body 4A of the pumping element 4, to which the plunger element 9 is associated, in a manner that conventional for those skilled in the art. In the example illustrated in FIG. 1 the plunger element 9 provides a lateral surface 9A whose thickness is substantially equal to the distance separating the external surface of the body 4A of the pumping element 4 from the inner surface of the neck 2 of the bag 1. In this case, the retaining seat 10 is obtained by means of a recess in the upper end portion of the side wall 9A of the plunger element 9.

It is of course possible to provide that the plunger element 9 has a side wall 9A of a conventional thickness, and of which extends a projecting element, such as a flange or a bead. As we see in fig. 1, when the seal member 7 is normally positioned in the end portion 2A of the neck 2 of the bag 1, it is not resting on the restraint seat 10. The latter is intended to prevent the element seal 7 falls into the bag 1 and to keep it in the position of use inside the neck 2 of the bag 1. Preferably the device for containing and dispensing a fluid substance comprises a dispensing cap 11 connected to the stem of 4A distribution of the pumping element 4, the distributor cap 11 comprising: - an upper wall 11A, and - at least one side skirt 11E which extends from the upper wall 11A, and having an internal surface of greater transverse dimension or equal to the transverse dimension of the tip member 5 and the base member 8, the side skirt 11B having a length such that it covers the tip member 5 and the base member 8. 11B side skirt has an outer surface adapted to apply decoration or print text, for example. Advantageously, the transverse dimension of the side skirt 11B is substantially equal to the transverse dimension of the tip member 5, so that the side skirt 11B slides along and is guided by the outer surface of the tip member 5 Preferably, the dispenser cap 11 has a substantially hollow, cylindrical body open at a lower end, preferably having a regular polygon cross-section, and even more preferably a circle shape. The distributor cap 11 has, in its inner part and preferably at its upper wall 11A, a tubular sleeve 11C connected to a channel which opens into a dispensing mouth, not shown. The tubular sleeve 11C is adapted to be associated, in a manner conventional to those skilled in the art, with a feed mouth 4E, which is preferably part of the dispensing rod 4B of the dispenser member 4. Preferably the cap distributor 11 has in its inner portion an inner guide wall 11D adapted to cooperate with a counter wall for guiding the base member 8. It is preferable that the above-mentioned guide wall, for guiding the inner guide wall 11D of the distributor cap 11, the same against guide wall 8E described above, against which slides the guide wall 5E of the tip member in the assembly phase. In the device illustrated by way of example in FIG. 1, the outer surface of the inner guide wall 11D slides along the inner surface of the guide wall against 8E, while the outer surface of the same against guide wall 8E is placed opposite and almost in contact with the inner surface of the guide wall 5E. It is obviously possible to provide that it is the internal surface of the inner guide wall 11D which slides along the outer surface of the guide wall 8E, while the inner surface of the latter wall is placed facing and almost in contact with the outer surface of the guide wall 5E. Alternatively, it is also possible for the base member 8 to be provided with a second guiding wall, provided specifically to guide the internal guiding wall 11D of the distributor cap 11. In a manner conventional to the person skilled in the art, the dispenser cap 11 is movable between at least one first operational distribution position in which there is distribution of the substance contained in the bag 1, and a second operational rest position in which there is no distribution of the fluid substance contained in the bag 1 (Fig. 1). The device according to the invention is adapted to be mounted in a container which, as illustrated in FIG. 1, comprises an outer rigid body 12 provided with a bottom 12A of which extends at least one side wall 12B, and adapted to house in its internal cavity the bag 1. The outer rigid body 12 further comprises a neck 12C, provided on a free edge of the side wall 12B and provided with fastening means 12D adapted to cooperate with 5F fastening means provided on a side wall 5G of the tip member 5. In the context of innovation, per container we mean any type of container adapted to contain the fluid substance. The material with which the bottle is made is for example plastic or glass. Preferably, the container is a glass bottle. In the example shown, the fastening means 12D and the fastening means 5F respectively comprise a corresponding thread and counter-thread. It can of course be otherwise. The operation of the innovation is obvious to those skilled in the art based on the foregoing description, and in particular is the following. The seal element 7 and the plunger element 9 are firstly associated with the pumping element 4. The latter is then connected to the base element 8 by means of the first connection means 8A, inserted by snap into the corresponding groove 4C of the body 4A of the pumping element 4. The collar 2 of the bag 1 is also associated with the seat 6 of the tip member 5 so that the rim 3 of the end portion 2A of the neck 2 is supported on the base wall 6A. The assembly comprising the bag 1 and the tip member 5 is then fixed to the outer rigid body 12 through the fastening means 12D provided on the neck 120 of the rigid outer body 12 and against the fastening means 5F provided on the wall 5G side of the tip member 5. The bag 1, inserted into the internal cavity of the outer rigid body 12, is filled with the fluid substance to be dispensed. The base element 8, associated with the pumping member 4, is then assembled together with the end element 5, itself attached to the external rigid body 12. The base element 8 is deposited on the tip member so that the pumping element is inserted into the neck 2 of the bag 1. The guide against wall 8E slides along the inner face of the guide wall 5E of the element 5, and the base member 8 is aligned and coaxial with the tip member 5, ready to snap together with the tip member 5.

The base-forming and nozzle-forming elements 8, 5 are associated by a simple pressure on the pedestal element 8 so as to snap between them the second connection means 8B of the pedestal element 8 and the connection means 5B of 5. Finally, the distributor cap 11 is associated with the pumping element 4, by inserting the tubular sleeve 11C of the cap into the feed mouth 4E provided in the dispensing rod 4B of the pumping element. 4. Once the container assembly is complete, the end user can take a dose of fluid substance by pressing on the dispensing cap 11 so as to bring it from its second rest position to its first dispensing position. A second embodiment of the innovation is illustrated in FIGS. 3 and 4, in which the elements in common with the first embodiment are indicated with the same number, to which a prime sign is added. According to the second embodiment, the second distance D2 'between the connection surface S' of the connection means 8'B and the connection means 5 of connection 5'B on the one hand and the base wall 6'A of the seat to accommodate the end portion 2'A of the neck 2 'of the bag 1' on the other hand, is greater than the first distance Dl 'between the median plane 7'A of the seal member 7' and the base wall 6'A of the seat to house the end portion 2'A of the neck of the bag 1 '. Advantageously, according to the second embodiment, the connection means 5'B of the tip member 5 'are provided on the face of the guide wall 5'E of the tip member 5' against which slides the against the guide wall 8'E, and the connection means 8B 'of the base member 8' are provided on the surface of the guide wall 8'E of the base member 8 'which slides against the face aforementioned of the guide wall 5'E. Accordingly, the guide wall 5'E of the tip member 5 'and the guide wall 8'E of the base member 8' also serve to connect between the tip member 5 'and the pedestal element 8 '. In this second embodiment, the connection means 8'B and the connection means 5'B are respectively a toothing and a counter-toothing projecting respectively from the outer surface of the guide wall 8 E of the pedestal member 8 ', and the inner surface of the guide wall 5'E of the tip member 5' (Figures 3 and 4). Obviously, if the guide of the base member 8 ', when assembled with the tip member 5', is made by sliding the inner surface of the guide wall 8'E against the outer surface of the 5'E guide wall of the tip member 5 ', then the toothing and the toothing are respectively on the inner surface of the guide wall 8'E of the base member 8', and on the outer surface of the guide wall 5'E of the tip member 5 '. The toothing and the toothing are in every respect analogous to the toothing and the toothing of the first embodiment, and in particular respectively comprise a surface and an abutment surface which are suitable for forming the surface of the tooth. coupling S 'mentioned above. The difference between the first and the second distance D1 ', D2' can be of the order of several centimeters, for example between 1 and 10 centimeters approximately.

Claims (6)

REVENDICATIONS1. Device for containing and dispensing a fluid substance, comprising: - a bag (1, 1 ') having a flexible bottom wall (1A, A), and a flexible side wall (1B, B) and a neck (2 , 2 ') comprising an end portion (2A, 2'A) having a flange (3, 3') which extends transversely to said neck (2, 2 '), said neck (2, 2') delimiting a opening for access to the bag cavity (1, 1 ') and for housing at least a portion of a body (4A, 4'A) of a pumping element (4, 4'), - an element forming tip (5, 5 ') comprising a base body (5A, 5'A) having a seat (6, 6') provided with a base wall (6A, 6'A) for housing and supporting at least said flange (3, 3 ') of the end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 '), said pumping element (4, 4') being of type "Airless", and manually operated, to take the fluid substance of the bag (1, 1 ') and feed it outside through a dispensing rod (4B, 4'B), at least a seal member (7, 7 ') being provided between said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 ') and a portion of the body (4A). , 4'A) of the pumping member (4, 4 '), said seal member (7, 7') being provided at a first distance (D1, D1 ') from said base wall (6A, 6'). A) of the seat (6, 6 ') for accommodating said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 '), and at least one base member (8 , 8 ') comprising first connecting means (8A, 8'A) adapted to connect said pumping member (4, 4') to said tip member (5, 5 '), and second connecting means (8B, 8'B) adapted to: - connect together said tip member (5, 5 ') and said base member (8, 8'), - maintain said end portion (2A, 2'A) of the neck ( 2, 2 ') of the bag (1, 1') stably constrained to the seat (6, 6 ') to accommodate said end portion (2A, 2'A), and to - maintain contact with each other the seal element (7, 7 '), said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 ') and a portion of the body (4A, 4'A). the pumping member (4, 4 '), said tip member (5, 5') having countermeasuring means (5B, 5'B) adapted to cooperate with said second connecting means (8B, 8 ') B) of the base element (8, 8 ') for the reciprocal connection of said two elements (5, 5', 8, 8 '), said means and against connection means (8B, 8'B, 5B, 5 B) providing at least one coupling surface (S, S ') having a second distance (D2, D2') to the base wall (6A, 6'A) of the seat (6, 6 ') for accommodating said portion end (2A, 2'A) of the neck (2, 2 ') of the bag (1, 1'), characterized in that said second distance (D2, D2 ') to said base wall (6A, 6') A) of the seat (6, 6 ') for accommodating said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 ') is greater than or substantially equal to said first distance (D1, D1 ') to said base wall (6A, 6'A) of the seat (6, 6') for accommodating said end portion (2A, 2'A) of the neck (2, 2 ') of the bag (1, 1 '), so as to limit any misalignment between said base member (8, 8') and tip member (5, 5 ') which would compromise the seal of said seal member (7, 7 '). 2. Device according to claim 1, characterized in that said tip member (5, 5 ') has a guide member (5D, 5'D) which starts from said base body (5A, 5'A), and has at least one guide wall (5E, 5'E), the base member (8, 8 ') comprising at least one guide element (8D, 8'D) having at least one guide wall (8E) , 8'E) adapted to slide along one face of said guide wall (5E, 5'E) when said base member (8, 8 ') is connected to said tip member (5, 5'). 3. Device according to claim 2, characterized in that when said second distance (D2 ') to said base wall (6'A) of the seat (6') for housing said end portion (2'A) of the neck (2 ') of the bag (1') is greater than said first distance to ° (D1 '), the connection means (5'B) of the tip member (5') are provided on the face of the wall for guiding (5'E) the tip member (5 ') against which the guide wall against (8'E) slides, and the connecting means (8B') of said base member (8 ') are provided on the surface of said guide wall (8'E) of said base member (8 ') which slides against said face of said guide wall (5'E). 4. Device according to one of the preceding claims, characterized in that said pumping element (4, 4 ') is provided with a plunger element (9, 9') placed inside said bag (1, 1 '), said plunger element (9, 9 ') forming a retaining seat (10, 10') for said seal member (7, 7 '), placed inside said neck (2, 2') of the bag (1, 1 '), adapted to avoid possible falls of the seal member (7, 7') in the bag (1, 1 '). 5. Device according to one of the preceding claims, characterized in that it comprises a distributor cap (11, 11 ') connected to said dispensing rod (4B, 4'B) of the pumping element (4, 4'), said dispensing cap (11, 11 ') comprising: - an upper wall (11A, 11'A), and - at least one lateral skirt (11B, 11'B) extending from said upper wall (11A, 11') A), having an inner surface of transverse dimension greater than or equal to the transverse dimension of said tip member (5, 5 ') and said base member (8, 8'), said side skirt (11B, 11'B) having a length such that it covers said tip member (5, 5 ') and said base member (8, 8'). 6. Device according to one of the preceding claims, characterized in that said second connection means (8B, 8'B) comprises a toothing provided with an abutment surface, and that said counter connection means (5B, 5'B) comprise a toothing provided with an abutment abutment surface, said abutment surface and said abutment abutment abuttingly abutting once said toothing (8B, 8'B) and said toothing (5B, 5'B) connected. between them, forming said coupling surface (S, S ') .. Device according to claim 6, characterized in that said toothing (8B, 8'B) and said toothing (5B, 5'B) are arranged coaxially and at a substantially constant distance from said seat (6, 6 ') for accommodating said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 '). 8. Device according to one of claims 2 to 7, characterized in that said guide wall (5E, 5'E) of the tip member (5, 5 ') develops substantially parallel to the axis of symmetry of said seat (6, 6 ') for housing said end portion (2A, 2'A) of the neck (2, 2') of the bag (1, 1 '), and substantially constant distance from the same seat (6, 6' ). 9. Device according to one of claims 2 to 8, characterized in that said guide wall (5E, 5'E) and said guide against wall (8E, 8'E) are substantially tubular. 10. Device according to one of claims 2 to 9, characterized in that the outer surface of said guide wall against (8E, 8'E) is opposite the inner surface of said guide wall (5E, 'E). 11. Device according to one of claims 2 to 9, characterized in that the inner surface of said guide wall against (8E, 8'E) is opposite the outer surface of said guide wall (5E, 5'E) . 12. Device according to one of claims 4 to 11, characterized in that when said seal member (7, 7 ') is normally positioned in said end portion (2A, 2'A) of the neck (2, 2'). of the bag (1, 1 '), it is not supported on said restraint seat (10, 10'). 13. Device according to one of claims 5 to 12, characterized in that said dispensing cap (11, 11 ') has a substantially hollow body, cylindrical, open at a lower end, preferably having a regular polygonal cross-section. , and even more preferably in the form of a circle. 14. Container comprising an outer rigid body (12, 12 ') and a device according to one of the preceding claims, said external rigid body (12, 12') comprising a bottom (12A, 12'A) of which extends at least one wall lateral (12B, 12'B), and adapted to house in said internal cavity said bag (1, 1 '), a neck (12C, 12'C) provided on a free edge of said side wall (12B, 12'B) ) and provided with fixing means (12D, 12'D) adapted to cooperate with countermeasuring means (5F, 5'F) provided on said tip member (5, 5 '), wherein said tip member ( 5, 5 ') is fixed to said neck (12C, 12'C) of said rigid outer body (12, 12') and said bag (1, 1 ') is housed inside said internal cavity of said external rigid body ( 12, 12 ').