Fluid product dispenser

Abstract

The invention relates to a dispenser comprising: - a dispensing member (P) connected to a main reservoir (R) containing a first fluid product, the dispensing member (P) communicating with a main axial outlet orifice (11), and - a plurality of secondary reservoirs (2) containing a second fluid product and each having a mobile wall (21), - a push-button (1) that can be moved along an actuation axis (X), carrying with it the main outlet orifice (11), characterized in that the push-button (1) defines as many secondary outlet orifices (12) as there are secondary reservoirs (2), the secondary outlet orifices (12) being distinct from the main axial outlet orifice (11), each secondary outlet orifice (12) being fed from a secondary reservoir (2) in response to the movement of its mobile wall (21), which movement is brought about by the movement of the push-button (1) along the actuation axis (X).

Description

[0001] The present invention relates to a fluid product dispenser comprising a dispensing element (pump or valve) connected to a main reservoir containing a first fluid product. The dispensing element communicates with a main axial outlet that moves along an actuating axis. The dispenser also includes several secondary reservoirs containing a second fluid product, each having a movable wall, as well as a plunger that can be moved along the actuating axis, thereby driving the main outlet. Such dispensers are used in the cosmetics, perfumery, and pharmaceutical industries.

[0002] In the prior art, document WO2012113749A1, which describes several dispensers of this type, is already known. According to one embodiment of this document, the dispenser comprises a rotating annular barrel forming several reservoirs. The outer periphery of this barrel is accessible so that it can be rotated. The rotating barrel is removably mounted under a plunger that moves axially but is prevented from rotating. This is because the plunger has a central orifice for the valve and an offset orifice, which is common to all the reservoirs of the rotating barrel. Each reservoir must be rotated by the barrel over a fixed pad to press it against this pad and discharge its contents through the offset orifice, which must therefore also be positioned above the pad. This implies that the plunger must be oriented angularly so that its offset orifice is axially aligned with the fixed pad.This document does not describe how the pusher and barrel are oriented relative to the fixed post.

[0003] The present invention aims to improve this dispenser, both in terms of its design and its use. The risk of leakage or residue of fluid at the offset orifice must be eliminated. The rotation of the barrel must be easier. The stability of the barrel must be ensured. The replacement of the barrel must be simpler.

[0004] To achieve this, the present invention proposes a fluid product dispenser comprising: a distribution unit, such as a pump or valve, connected to a main tank containing a first fluid product, the distribution unit communicating with a main axial outlet orifice which moves along an actuation axis, and several secondary tanks containing a second fluid product and each having a movable wall to reduce the volume of the secondary tank and discharge the second fluid product out of the secondary tank, a pusher movable along the actuation axis by driving the main outlet orifice, characterized in that the pusher defines as many secondary outlet ports as there are secondary reservoirs, the secondary outlet ports being distinct from the main axial outlet port and surrounding the main axial outlet port, each secondary outlet port being supplied by a secondary reservoir in response to the displacement of its movable wall caused by the displacement of the pusher along the actuation axis.

[0005] Thus, each secondary reservoir feeds its own secondary outlet port, so that there is no relative movement, particularly rotational movement, between the secondary reservoirs and the plunger. and in that the plunger and the secondary reservoirs form a removable cartridge unit, which is rotatably mounted around the main axial outlet port and the actuation axis.

[0006] According to the invention, the plunger and secondary reservoirs form a removable cartridge unit, which is rotatably mounted around the main axial outlet and the actuation shaft. Whereas the plunger and barrel of document WO2012113749A1 are two separate parts that can be separated and rotate relative to each other, the plunger and secondary reservoirs of the invention are fixed and thus form a single unit.

[0007] According to an advantageous feature, the removable cartridge unit is elastically ejected from the distribution element after a rotational movement through a predetermined angle, advantageously on the order of 360°. In practice, the user axially presses the cartridge unit against elastic means on the distribution element, then rotates it through a small angle, for example, on the order of 10°. The cartridge unit is then connected but can rotate on its own axis. The user can then rotate it until it reaches the end of its travel in a retracted position where it is released and ejected by the elastic means.

[0008] According to another feature of the invention, the movable wall of each secondary reservoir successively engages with a fixed pressing pad under the pressure of the plunger. Advantageously, the distributor may include angular positioning means to fix the angular position of each secondary reservoir in turn by rotating it above the fixed pressing pad. Thus, the user does not have to search by trial and error for the precise angular position of the cartridge unit. When rotating it, the user perceives stable positions that correspond to the successive axial alignments of the secondary reservoirs above the fixed pressing pad.

[0009] According to one embodiment of the invention, the main outlet port is surrounded by a main recovery area integral with the distribution element, and the secondary outlet ports are surrounded by a secondary recovery area formed by the plunger. The two main and secondary areas are connected flush. Preferably, the main area is central, and the secondary area surrounds the main area. Thus, the secondary area can be part of a removable cartridge unit, while the main area remains in place on the distribution element. The secondary area is therefore attached around the main area without creating a major discontinuity between them. The cartridge unit can have an overall configuration similar to a donut (toric-shaped doughnut).

[0010] According to another embodiment of the invention, the pusher defines both the main axial outlet orifice and the secondary outlet orifices, surrounded by a single common recovery area. The cartridge entity may have an overall configuration similar to a puck.

[0011] According to another aspect of the invention, the plunger can form internal compartments in which secondary reservoirs are received in the form of crushable capsules filled with a second fluid product, each internal compartment advantageously being provided with a pierce leading to the secondary outlet. Alternatively, the plunger can form internal compartments sealed by deformable membranes acting as movable walls. Advantageously, the deformable membrane can be selected from a rollable membrane and a stretchable membrane.

[0012] According to a fully developed embodiment, the distribution unit comprises an actuating rod which is movable along the actuating axis, this actuating rod being capped by a plate which is movable axially, but blocked in rotation, the plate forming a central head in contact with the actuating rod and an offset passage window for a fixed pressing pad which blocks the plate in rotation, the pusher being mounted removably on the plate and rotatable around the central head, so as to be able to position in turn a secondary reservoir above the fixed pressing pad, which will crush the secondary reservoir and thus discharge the second fluid product through the secondary outlet orifice, at each actuation of the pusher, which simultaneously generates the actuation of the distribution unit, which will discharge the first fluid product through the main axial outlet orifice.The central head can form the main axial outlet and a main recovery area surrounding the main axial outlet. Alternatively, the central head can be covered by the plunger, which forms both the main axial outlet and the secondary outlets, surrounded by a single common recovery area.

[0013] The essence of the present invention lies in assigning an outlet to each secondary reservoir. The combination of the plunger that forms the secondary outlets and the secondary reservoirs in the form of a replaceable, removable cartridge or refill is a particularly advantageous feature of the invention. The cartridge ejection and angular positioning means are very practical and offer great ease of use. The cartridge forms the secondary outlets and can also form the main axial outlet. The tray allows the cartridge to be received with greater stability, especially when the tray is axially guided.

[0014] The invention will now be described in greater detail with reference to the accompanying drawings, giving, by way of non-limiting examples, two embodiments of the invention.

[0015] In the figures: There figure 1is a vertical cross-sectional view through a distributor according to a first embodiment of the invention in its rest state, The figure 2 is a view of the distributor in the figure in the actuated state, The figure 3 is a view of the distributor of figures 1 and 2 with the separate cartridge, The figure 4 is a vertical cross-sectional view through a distributor according to a second embodiment of the invention in its rest state, The figure 5 is a fragmented perspective of the distributor of the figure 4 , There figure 6 is an exploded perspective view of the dispenser cartridge figures 4 And 5 , THE figures 7a and 7b illustrate respectively the resting and compressed states of the deformable membrane of the distributor figures 4 , 5 and 6 , THE figures 8a and 8b illustrate respectively the rest and compressed states of a variant of a deformable membrane, The figure 9is a perspective view of a plateau according to one embodiment of the invention, and The Figure 10 is a perspective view from below of a cartridge according to one embodiment of the invention.

[0016] We will first refer to figures 1, 2 And 3 To describe the fluid product dispenser according to the first embodiment of the invention. This dispenser of the invention comprises, firstly, a fluid product reservoir R, in which a fluid product, such as a cream, gel, lotion, serum, etc., is stored. This reservoir R includes a neck R1 for mounting a dispensing element P, a guide sleeve R2 extending around the neck R1, and a pressing pad R3 extending axially upwards within the annular space defined between the neck R1 and the guide sleeve R2. The reservoir R can be made of any material, such as plastic or metal.

[0017] The dispensing element P can be a pump or a valve, comprising a body P1 defining a retaining flange P2 which engages with the neck R1. The dispensing element P also includes an actuating rod P3 which is axially movable in a reciprocating motion within the body P1 to deliver fluid product in a metered or unmetered manner. This is a very common design for a pump or valve in the cosmetics, perfumery, or pharmaceutical industries. Since the dispensing element P is not critical to the present invention, it will not be described in further detail.

[0018] The distributor also includes a plate 3, which is mounted on the free end of the actuating rod P3 of the distribution member P. The plate 3 is therefore axially movable with the actuating rod P3. The plate 3 includes a head 31 that caps the actuating rod P3. The head 31 includes a sleeve 33 that is press-fitted and / or snap-fitted onto the free end of the actuating rod P3. Downstream of the actuating rod P3, the head 31 forms a passage 32, through which the fluid product discharged by the distribution member P will flow. The head 31 surrounds the actuating rod P3 and extends around the neck R1 with a skirt 34, which helps guide the plate 3 on the reservoir R. The plate 3 also includes an annular flange 35 that extends radially outwards from the head 31.This annular flange 35 forms an axial passage window 36, into which the pressing pin R3 of the reservoir R is engaged. The flange 35 also forms an elastic tab 37 whose function is to create the sensation of passing over radial resistance points during the indexing of the plunger. It eliminates radial rotational play and provides a degree of axial retention to prevent the removable cartridge from being lost while it is being inserted. Finally, on its outer periphery, the plate 3 forms a guide ring 38, which is engaged inside the guide sleeve R2 of the reservoir R, so as to guide the plate axially in a stable manner.

[0019] Thus, axial pressure on the head 31 causes the actuating rod P3 to be pushed into the body P1 of the distribution member P, the skirt 34 to slide around the neck R1, the pressing stud R3 to slide into the axial passage window 36, and the ring 38 to slide inside the sleeve R2 of the reservoir R. The fluid product discharged by the distribution member P will pass through the passage hole 32 of the head 31.

[0020] The distributor of the invention also includes a pusher 1 mounted on the plate 3, so that it also moves axially back and forth with the plate 3 and the actuating rod P3. This pusher 1 includes a recovery zone 10, which preferably has a slightly curved shape. This recovery zone 10 is first pierced with a main axial or central outlet 11, which is aligned with the through hole 32 in the head 31 of the plate 3. Thus, the fluid product from the dispensing member P is forced through the actuating rod P3, the through hole 32, and the main orifice 11 to reach the recovery zone 10. In addition to the main orifice 11, the recovery zone 10 is also pierced with several secondary outlet orifices 12, which extend around the main orifice 11.Upstream of the secondary ports 12, the pusher 1 forms drilling points 13, the function of which will be described below. These drilling points 13 protrude into internal recesses 15, which are defined by tubes 14 extending downwards from the recovery area 10. The tubes 14 may be separated from each other or, conversely, joined together, so as to form a ring. According to the invention, secondary reservoirs, in the form of crushable capsules 2, are received respectively in the internal recesses 15. These crushable capsules 2 may be in the form of small eggs comprising a flexible outer shell filled with a fluid product, which may be identical, but preferably different, from that of the reservoir R. The crushable capsule 2 includes a lower wall 21 which is located at the level of the lower opening of the compartment 15 so as to be accessible.Conversely, its upper wall makes light contact with the piercing needle 13. To keep the crushable capsules 2 in their respective housings 15, sufficient friction or a reduced opening can be provided, as is the case on the . figures 1 and 2 On its outer periphery, the pusher 1 includes a gripping ring 16, which may be provided with projecting profiles to improve its grip. The free lower edge of the gripping ring 16 may come into contact with the guide ring 38 of the plate 3.

[0021] The housings 15 are formed above the annular flange 35, so that it is possible to position a housing 15 axially in line with the pressing stud R3, as can be seen on the figures 1 and 2The free end of the pressing pad R3 is located near the lower wall 21 of the crushable capsule 2 received in the housing 15. The elastic tab 37 of the plate 3 is engaged in the space formed between the tubes 14 and the gripping ring 16 to hold the pusher 1 on the plate 3, but also to angularly index the pusher 1 on the plate 3 by passing through hard points, which guide the user when using the product. More specifically, the flexible leg 37 includes an anchoring blade 371 and a free blade 372. The anchoring blade 371 engages with the gripping ring 16 and the free blade 372 engages, clicked for example, with the tubes 14 (separate or joined) to create the hard or stable points, each corresponding to the axial alignment of a secondary reservoir or capsule 2 above the pressing pad R3.The elastic leg 37 therefore fulfills an angular positioning function to ensure the successive axial alignment of the secondary tanks 2 above the pressing pad R3.

[0022] The pusher 1, with its secondary reservoirs 2 in the form of crushable capsules, can be permanently mounted on the tray 3, but preferably the pusher 1 and its crushable capsules 2 are removably mounted on the tray 3, so as to constitute a removable cartridge unit, which can also be described as a refill. This removable cartridge unit is more clearly visible on the figure 3 , which represents the cartridge entity C1 ready to be transferred to tray 3. Once in place, we are back in the starting position of the figure 1A user can then press the pusher 1, for example on the outer edge of the recovery plate 10, so as to move it downwards towards the reservoir R. This pressing of the pusher 1 causes the plate 3 to descend and the actuating rod P3 to be pushed into the body P1 of the distribution element P. The fluid product from the distribution element P is thus forced through the actuating rod P3, the passage hole 32 and the main orifice 11, so as to spread over the recovery plate 10, as can be seen in the figure 2Simultaneously, the pressing pad 3 enters the housing 15 and engages with the lower wall 21 of the crushable capsule 2. The capsule is thus pushed firmly against the piercing needle 13, which pierces its flexible outer shell. The fluid product it contains can then escape through the secondary orifice 12 and spread onto the recovery area 10, located next to, but eccentrically relative to, the fluid product from the dispensing element P. The user can then mix the two fluid products on the recovery area 10 before applying the mixture to the target surface, which can be skin, nails, hair, etc.

[0023] Since the dispenser has only one pressing button R3, only one secondary reservoir 2 is activated and emptied each time the pusher 1 is pressed. To replenish the flow of liquid products, the pusher 1 must be rotated on the plate 3 to position another secondary reservoir 2 in axial alignment with the pressing button R3. The actuation operation can then be repeated. For example, with eight secondary reservoirs 2 evenly distributed around the main orifice 11, the user will need to rotate the pusher 1 around the X-axis by an angle of 45° to move from one secondary reservoir 2 to the next. As will be seen below, the dispenser can be equipped with angular positioning means to fix the angular position of the pusher 1 relative to the pressing button R3, so that each secondary reservoir 2 is successively positioned in alignment above the pressing button R3.

[0024] It can be noted that in this first embodiment of the invention, the plunger 1 forms both the main orifice 11 and the secondary outlet orifices 12, at the level of a single common recovery area 10, on which the mixing of the fluid products can be carried out. The cartridge unit C1, consisting of the plunger and its secondary reservoirs 2, is then in the form of a disc or a puck, as can be seen in the figure 3 .

[0025] We will now refer to figures 4 , 5 and 6to describe a second embodiment for a fluid product dispenser of the invention. The dispensing member P may be strictly identical or similar to that of the first embodiment, with a body P1 and an actuating rod P3. The dispensing member P is received in a neck F1 which is formed by a retaining ring F. This also includes a threaded skirt F0, a guide sleeve F2, and a pressing stud F3. The architecture of this retaining ring F is comparable to that of the reservoir R of the first embodiment of the figures 1 to 3 .

[0026] The plate 3' includes a head 31' which is also mounted on the free end of the actuating rod P3. The head 31' defines a main axial or central outlet 32', as well as a main recovery area 30' extending around the main outlet 32'. The plate 3' also includes an annular flange 35' with an axial through-hole 36' in which the pressing pin F3 is engaged, as in the first embodiment of the invention. The plate 3' includes a guide ring 38' which is engaged inside the guide sleeve F2 of the retaining ring F, as in the first embodiment of the invention.

[0027] The pusher 1' is mounted on the plate 3' around the head 31'. For this purpose, the pusher 1' defines a central passage opening 11', into which the head 31' is engaged. The pusher 1' forms a secondary recovery area 10' that extends all around the primary recovery area 30', preferably contiguous and flush, so as to prevent any deposit or residue of fluid product at the junction of the two areas. The secondary recovery area 10' is formed with secondary outlet ports 12' that communicate with secondary reservoirs 2' located below the secondary recovery area 10'.

[0028] By referring to the figure 6We can see that the pusher 1' forms internal compartments 15' around the central passage opening 11'. These internal compartments 15' are sealed by deformable membranes 21' formed as a single unit by a ring 22'. As can be understood from the figure 6 The ring 22' with its deformable membranes 21' is fitted inside the plunger 1' and secured in a leak-proof manner, for example by welding or bonding. The secondary reservoirs 2' thus formed by the compartments 15' and the deformable membranes 21' contain a fluid product that is preferably different from that dispensed by the dispensing element P. In this embodiment, the deformable membrane 21' is a rollable membrane, as will be seen below.

[0029] The pusher 1' is mounted axially on the plate 3' by passing the head 31' through the central passage opening 11'. The pusher 1' can be permanently mounted on the plate 3', but preferably the pusher 1' with its diaphragm ring 22' constitute a removable cartridge unit C2, which the user can remove from the plate 3' once the secondary reservoirs 2' have been emptied.

[0030] Just as in the first embodiment of the invention, it is possible to provide angular positioning means in order to axially align each tank 2' above the pressing block F3.

[0031] The operation of this second distributor of the invention is strictly identical to that of the first embodiment of the figures 1 to 3The user can press the push button 1', for example, at its outer edge. The plate 3' is driven downwards, which pushes the actuating rod P3 into the body P1 of the dispensing unit P. Fluid product is then forced through the actuating rod P3 and the main orifice 32', spreading over the main recovery area 30'. Simultaneously, the deformable diaphragm 21' is moved by the pressing button F3, forcing the contents of the secondary reservoir 2' through the secondary outlet orifice 12'. The fluid product is then present in the secondary recovery area 10', which surrounds the central recovery area 30'. The user can mix the two products before applying them to the desired target surface.

[0032] In this second embodiment of the invention, it can be noted that the removable cartridge entity C2 is in the form of a washer, or more precisely a toroidal donut, which is known as a "donut".

[0033] THE figures 7a and 7b allow us to understand the behavior of the deformable membrane 21' when subjected to stress by the pressing block F3. On the figure 7a The distributor is in its resting state, with the pressing pin F3, while engaged in the passage window 36', is still out of contact with the diaphragm 21'. It can be observed that the diaphragm 21' forms a sort of basin oriented downwards towards the pressing pin F3. On the figure 7bThe image shows the state of membrane 21' after the pressing action of the F3 block. It can be observed that the depression formed by membrane 21' has been literally folded back so as to come into contact with the internal walls of compartment 15'. The volume of the secondary reservoir is then close to zero. It can be understood that membrane 21' has been deformed by a folding or turning action, without significant stretching. Thanks to this foldable membrane 21', it is possible to create high-capacity secondary reservoirs 2', while ensuring their almost complete emptying without risk of membrane rupture.

[0034] According to one alternative embodiment, the roll-up membrane 21' can simply be replaced by a stretchable membrane 21", which seals the compartments 15' to form the secondary reservoirs 2'. This stretchable membrane 21' can be in the form of a flat film, as can be seen in the figure 8aAfter action of the F3 pressing pad, this 21' stretch film is deformed inside the 15' compartment, so as to get closer to its internal walls, thus reducing the volume of the tank considerably.

[0035] THE Figures 9 and 10 aim to illustrate removable connection means and angular positioning means between a 3" plate and a C3 cartridge unit. These removable connection means and angular positioning means can easily be implemented in the second embodiment of the invention. figures 4 to 6 and also in the first embodiment of figures 1 to 3 with some adaptations, replacing the elastic leg 37, which also fulfills the functions of removable connection and angular positioning.

[0036] On the figure 9It can be seen that the 3" plate also includes a head 31" defining a central or axial main outlet 32', as in the second embodiment of the invention. This main outlet 32' is surrounded by a main recovery area 30', as in the second embodiment. However, it can be noted that the head 31" includes several tabs 311 that project radially outwards from the peripheral wall of the head 31". On the figure 9Four tabs 311 can be seen, distributed approximately equidistant around the periphery of the head. The tabs 311 are not all of the same width, forming a kind of key that can be inserted at a specific angular orientation. The plate 3" also includes an axial passage window 36', in which the pressure pad F3 is engaged. Outside the window 36', the plate 3' includes three teeth 312 mounted on elastic tabs 313. These teeth 312 can thus move axially by bending the tabs 313.

[0037] On the Figure 10, we see a removable cartridge entity C3 comprising a pusher 1" associated with a ring 22' forming deformable membranes 21'. Inside the ring 22', the pusher 1" forms four cylinder segments 17 separated by axial slots 171 of distinct widths. These cylinder segments 17 constitute a kind of lock designed to cooperate with the key of the plate 3", formed by the tabs 311 of different widths. More precisely, the tabs 311 can be inserted into the slots 171 separating the cylinder segments 17, but only with a single, predetermined angular position, which is imposed by the widths of the tabs 311 and the slots 171 separating the cylinder segments 17. Once fully engaged between the cylinder segments, the tabs 311 can engage under the cylinder segments 17 so as to allow the rotation of the cartridge entity C3 on the plate 3".The rotation of the cartridge entity C3 is thus possible until the tabs 311 reach their starting position opposite their respective slots 171. From this position, the tabs 311 can again be withdrawn through the slots 171 separating the cylinder segments 17. In this way, the cartridge entity C3 is fixed to the plate 3" over a complete rotation, i.e. 360°.

[0038] Still on the Figure 10As can be seen, the pusher 1" forms crenellated profiles around the ring 22'. These crenellated profiles comprise peaks 18 and troughs 19 separated by slopes 189. There are as many peaks 18, troughs 19, and slopes 189 as there are secondary reservoirs, and therefore deformable diaphragms 21'. These crenellated paths are designed to cooperate with the teeth 312 mounted on the flexible tabs 313. Rotation of the cartridge element C3 on the plate 3" is possible by deforming the tabs 313, so as to bring the teeth 312 onto the peaks 18, and then into an adjacent trough 19. In this way, the angular position of each deformable diaphragm 21' in alignment with the pressure pad F3 is ensured. After each actuation of the cartridge entity C3, the user rotates the cartridge entity C3, so as to bring the teeth 312 from one hollow 19 to the next hollow by way of a vertex 18.When all the secondary reservoirs have been emptied, a final rotation brings the tabs 311 to the level of their respective slots 171 and the teeth 312 will then eject the cartridge entity C3, because the teeth 312 are then positioned at a peak 18, which creates the deformation of the flexible tabs 313. The serrated paths also include steep slopes 198, preventing the rotation of the cartridge entity C3 in the counterclockwise direction.

[0039] Removable connection means therefore allow the cartridge entity to be connected to the 3" plate over a complete turn, at the end of which the cartridge entity C3 is ejected by the teeth 312 elastically stressed by the lugs 313.

[0040] Angular positioning means allow each secondary tank to be positioned precisely above the F3 pressing block.

[0041] In all embodiments, the secondary reservoirs 2, 2' each include a movable wall (lower wall 21 - roll-up membrane 21' - stretchable membrane 21") which serves to reduce its volume so as to force its contents out of the secondary reservoir.

[0042] Thanks to the invention, a rotary and removable push-button distributor is available, comprising as many secondary outlet ports as there are secondary reservoirs. The plate mounted on the actuating rod of the distribution element ensures stable reception and guided axial movement.

Claims

1. A fluid product dispenser comprising: - a dispensing member (P), such as a pump or a valve, connected to a main reservoir (R) containing a first fluid product, the dispensing member (P) communicating with a main axial outlet orifice (11; 32') which moves along an actuation axis (X); and - a plurality of secondary reservoirs (2; 2') containing a second fluid product and each having a mobile wall (21; 21'; 21") in order to reduce the volume of the secondary reservoir (2; 2') and deliver the second fluid product from the secondary reservoir (2; 2'), - a push button (1; 1'; 1") that can be moved along the actuation axis (X) carrying the main outlet orifice (11; 32') with it, characterized in that the push button (1; 1'; 1") defines as many secondary outlet orifices (12; 12') as there are secondary reservoirs (2; 2'), the secondary outlet orifices (12; 12') being distinct from the main axial outlet orifice (11; 32') and surrounding the main axial outlet orifice (11; 32'), each secondary outlet orifice (12; 12') being fed from a secondary reservoir (2; 2') in response to the movement of its moving wall (21; 21'; 21") brought about by the movement of the push button (1; 1'; 1") along the actuation axis (X), and in that the push button (1; 1'; 1") and the secondary reservoirs (2; 2') form a removable cartridge unit (C1; C2; C3), which is rotatably mounted about the main axial outlet orifice (11; 32') and the actuation axis (X).

2. The dispenser as claimed in claim 1, in which the removable cartridge unit (C3) is elastically ejected from the dispensing member (P) after a rotational displacement over a predetermined angle, advantageously of the order of 360°.

3. The dispenser as claimed in claim 1 or claim 2, in which the mobile wall (21; 21'; 21") of each secondary reservoir (2; 2') comes into successive engagement with a fixed stud (R3; F3) for pressing under the action of the push button (1; 1'; 1").

4. The dispenser as claimed in claim 3, comprising angular positioning means (37; 312, 313, 18, 19) for fixing the angular position of each secondary reservoir (2; 2') in turn by rotation to above the fixed pressing stud (R3; F3).

5. The dispenser as claimed in any one of the preceding claims, in which the main outlet orifice (32') is surrounded by a main collection area (30') that is integral with the dispensing member (P), the secondary outlet orifices (12') are surrounded by a secondary collection area (10') formed by the push button (1'), the two main (30') and secondary (10') areas being connected in alignment.

6. The dispenser as claimed in claim 5, in which the main area (30') is central and the secondary area (10') surrounds the main area (30').

7. The dispenser as claimed in any one of claims 1 to 4, in which the push button (1) defines both the main axial outlet orifice (11) and the secondary outlet orifices (12), surrounded by a single common collection area (10).

8. The dispenser as claimed in any one of the preceding claims, in which the push button (1) forms internal housings (15) in which the secondary reservoirs in the form of crushable capsules (2) filled with second fluid product are received, each internal housing (15) advantageously being provided with a puncturing needle (13) that leads to the secondary outlet orifice (12).

9. The dispenser as claimed in any one of claims 1 to 7, in which the push button (1'; 1") forms internal compartments (15') sealed by deformable membranes (21'; 21") acting as mobile walls.

10. The dispenser as claimed in claim 9, in which the deformable membrane is selected from a fold-back membrane (21') and a stretchable membrane (21").

11. The dispenser as claimed in any one of the preceding claims, in which the dispensing member (P) comprises an actuating pin (P3) that is movable along the actuation axis (X), this actuating pin (P3) being capped by a plate (3; 3'; 3") that is axially movable but prevented from rotating, the plate (3; 3'; 3") forming a central head (31; 31'; 31") that is engaged with the actuating pin (P3) and an off-axis through aperture (36; 36') for a fixed pressing stud (R3; F3) that locks the plate (3; 3'; 3") against rotation, the push button (1; 1'; 1") being removably mounted on the plate (3; 3'; 3") and rotatable about the central head (31; 31'; 31") so as to be able to position a secondary reservoir (2; 2') one at a time above the fixed pressing stud (R3; F3) which will crush the secondary reservoir (2; 2') and therefore deliver second fluid product through the secondary outlet orifice (12; 12') each time the push button (1; 1'; 1") is actuated, which simultaneously causes the dispensing member (P) to be actuated to deliver the first fluid product through the main axial outlet orifice (11; 32').

12. The dispenser as claimed in claim 11, in which the central head (31'; 31") forms the main axial outlet orifice (32') and a main collection area (30') that surrounds the main axial outlet orifice (32').

13. The dispenser as claimed in claim 11, in which the central head (31) is covered by the push button (1) that forms both the main axial outlet orifice (11) and the secondary outlet orifices (12), surrounded by a single common collection area (10).

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