Liquid product dispenser

Abstract

A fluid product dispenser comprising: - at least two reservoirs, each equipped with a pump, - a common plunger (4) including a dispensing orifice (43) in which the pumps are mounted on the reservoirs by means of retaining rings (B1, B2) held in place by locking collars (31', 32') engaged axially around the retaining rings (B1, B2), characterized in that the locking collars (31', 32') are connected together while being movable relative to each other, such that the mutual position of the two locking collars (31', 32') is adaptable according to the mutual position of the two retaining rings (B1, B2). "Figure for the abbreviation: Figure 11"

Description

Title of the invention: Fluid product dispenser

[0001] The present invention relates to a dispenser for fluid products comprising at least two reservoirs, each equipped with a pump including a valve stem that can be moved back and forth about an X-axis. The dispenser also incorporates a common connection fitting comprising inlet sleeves mounted on the valve stems, the inlet sleeves being connected by conduits to an outlet well. The dispenser also incorporates a common plunger comprising a dispensing orifice connected to the outlet well, the plunger being movable back and forth about the X-axis, carrying with it the common connection fitting and the two valve stems. This is a very classic design for a dispenser delivering a mixture of fluid products and is commonly referred to as a dual dispenser. Trio, or even more, versions also exist.

[0002] Generally, the two reservoirs are separated from each other and held in place by a common part forming two receiving recesses, one for the necks of the two reservoirs. In this case, the center distance (horizontal gap) and the angle of incidence (mutual axial positioning) of the two valve stems are fixed by the common part, and the other parts of the distributor are adapted to the center distance and incidence thus determined. The two valve stems are located at the same axial height or at least at a fixed mutual axial position, and their center distance is known.

[0003] The situation is different when the mutual positioning of the two tanks is imposed by other parameters, in particular direct contact between the two tanks. This is all the more problematic with glass tanks, whose tolerances are particularly large.

[0004] Let us take the example of two glass tanks, each consisting of a body and a neck. It is already known that there is a significant tolerance at the neck, particularly with regard to its height relative to the body. By joining these two tanks by direct contact between their bodies, for example by gluing, it is clear that the mutual position of the two necks can vary, both in terms of center-to-center distance and alignment. And in the case where the bodies have complex shapes with complex surfaces of mutual contact, the tolerance in terms of center-to-center distance and alignment increases even further. We can thus end up with a batch of glued tanks with center-to-center distance and alignment deviations of several tenths of a millimeter, or even more than one millimeter.

[0005] It is then understood that mounting a distribution assembly on this pair of tanks will be very complicated.

[0006] The individual mounting of the pumps on the necks by a crimping technique would seem possible in theory, but encounters two distinct problems.

[0007] The first problem is related to the fact that the center-to-center distance between the necks of this type of joined tank is often small, so the crimping head is hindered by the proximity of the other neck. Crimping is then simply impossible in practice. This problem could theoretically be overcome by crimping the two tanks before gluing them together, but this would require filling them beforehand, which is not common practice in assembly processes.

[0008] The second problem, when the first does not occur, lies in the fact that the common tappet will act unbalanced on the two valve stems due to the misalignment. Furthermore, variations in center distance complicate, or even prevent, the mounting of the common connecting fitting on the valve stems and / or the mounting of the tappet on the common fitting.

[0009] The individual mounting of the pumps on the necks by means of rings blocked by ferrules leads to the same disadvantages as the mounting by crimping.

[0010] Mounting the pumps on the necks by means of rings blocked by a common part forming the collars generates an additional disadvantage due to the fact that the center distance of the collars will not correspond with the variable center distance of the necks.

[0011] Thus, in all cases, it is complicated, if not impossible, to mount a conventional distribution head on a pair of associated tanks where the reference for the center distance and the mounting surface is not fixed on the upper annular edge of the necks. This is especially true for glass tanks, but certainly also, to a lesser extent, for tanks made of other materials, such as plastic.

[0012] The present invention aims to remedy the various drawbacks of the prior art by defining a distributor that adapts to the center distance and seating defects of the necks of tanks.

[0013] To this end, the present invention proposes a liquid product dispenser comprising: - at least two reservoirs, each equipped with a pump comprising a valve stem that can be moved back and forth along an X-axis, - a common connection fitting comprising inlet sleeves mounted on the valve stems, the inlet sleeves being connected by conduits to an outlet well, - a common pusher comprising a distribution orifice connected to the outlet well, the pusher being movable back and forth along the X axis, in which the pumps are mounted on the tanks by means of fixing rings held in place by locking rings engaged axially around the fixing rings, characterized in that the locking frets are connected together while being movable relative to each other, so that the mutual position of the two locking frets is adaptable according to the mutual position of the two fixing rings.

[0014] According to a first embodiment of the invention, the locking rings can be formed as a single piece from a ring element, which defines at least one flexible connection between the two locking rings. Thus, the two rings are joined to each other by deformable material bridges.

[0015] According to a second embodiment of the invention, a fret piece defines at least one insertion housing, into which a locking fret is slidably received. Advantageously, the insertion housing may include sliding ribs and the locking fret may include sliding grooves cooperating with the sliding ribs to guide the locking fret in moving away from / toward the other locking fret.

[0016] According to another aspect of the invention, the conduits of the common connecting end can be flexible.

[0017] Indeed, the flexibility, deformability, or resilience of the conduits in the axial and radial directions allows the common connecting end to be adapted to valve stems with different center-to-center distances and angles. The inlet sleeves can move apart or closer together by deforming the conduits, both axially (angle) and radially (center-to-center distance). Conversely, the outlet well, which is located between the two inlet sleeves, advantageously at mid-distance, undergoes only very slight displacement, or even none at all.

[0018] According to one embodiment of the invention, the conduits can be substantially rigid but curved, so as to provide acceptable deformability. This means that the conduits can accommodate variations in center-to-center distance and / or angle under the action of a relatively low stress. The deformability arises from the combination of the relative rigidity or flexibility of the chosen material and the naturally deformable geometry, in the desired directions, of the curved shape. In practice, polypropylene or polyethylene can be used to manufacture the conduits, and even the entire common connecting end. The conduits can thus each have a C-shaped configuration.

[0019] According to another aspect of the invention, the common connection fitting may consist of two parts joined one on top of the other in a watertight manner, advantageously along a joining plane that extends perpendicularly to the X-axis. Preferably, the common connection fitting may comprise a base part forming the two inlet sleeves and a cover part forming the outlet well, the conduits being jointly formed by the base and cover parts. Both parts may be made of polypropylene or polyethylene.

[0020] By giving the conduits a C-shape, the common connecting end can The S-shaped design features an inlet sleeve at each end of the S and the outlet well at its center. The inlet sleeves and outlet well are aligned, with a C-shaped conduit on either side of the line, thus forming an S. It is easy to see that this S-shape provides increased elastic deformation capacity while keeping its center virtually or perfectly fixed. The S-shape can deform in the plane in which it is inscribed, but also along the axis perpendicular to that plane.

[0021] According to another feature of the invention, the common connecting end may include studs extending axially from the inlet sleeves towards the common tappet. Caps are engaged more or less axially on these studs depending on the mutual axial position (angle of inclination) of the inlet sleeves. These caps are arranged in the same axial position and come into contact with the common tappet. The greater or lesser degree of engagement of the caps on or in the studs compensates for any misalignment of the valve stems. For example, one can imagine a right valve stem that is located axially higher than the left valve stem. In this case, the right cap is more engaged on or in the right stud than the left cap is on or in the left stud. This is the case when the caps are located at the same axial height (zero angle of inclination).It is also possible to consider arranging the caps with a constant axial offset between them, which is independent of any misalignment of the nipples.

[0022] According to a practical embodiment, the nipples and caps may comprise profiles that interfere with each other to a greater or lesser degree depending on the greater or lesser axial engagement of each cap on its respective nipple. For example, one or more vertical ribs of the cap may be used to punch into an annular reinforcement of the nipple, or vice versa.

[0023] In practice, the final positions of the caps on their respective nipples can be achieved by a maximum indentation which can be carried out at the factory, for example by a piston on the assembly machine.

[0024] It should be noted that the implementation of nipples and caps can be carried out independently of the flexibility of the conduits, so individual protection could be sought for this characteristic. Functionally, the nipples cooperating with the caps serve as a means of compensating for any misalignment of the valve stems, and more generally of the tank necks.

[0025] According to another aspect of the invention, the common pushrod can slide axially in a cover that is mounted on the flange piece, the cover advantageously defining a window in which the distribution orifice of the common pushrod is housed. Thus, the flange piece serves as a support for the cover, the lower edge of which can come into abutment on the tanks, for example at a shoulder jointly formed by the two tanks. More specifically, the flange piece can include at least two mounting areas for the cover, these mounting areas being connected to the locking flanges in a single piece by flexible links. Preferably, the mounting areas are rigid, the mutual position of the mounting areas in a plane perpendicular to the X-axis being practically insensitive to variations in the mutual position of the retaining rings in a plane perpendicular to the X-axis. A two-part design for the flange piece is also conceivable: an inner figure-eight-shaped portion forming the two flanges and an outer ring attached to the figure-eight piece, which would receive an aesthetic cover.

[0026] Advantageously, the two reservoirs, preferably made of glass, are in contact with each other, such that their relative position depends on this mutual contact. Although this feature is fundamental to the problem addressed by the invention, it can serve to distinguish the dispenser from the invention.

[0027] The invention will now be described more fully with reference to the accompanying drawings, giving by way of non-limiting example one embodiment of the invention.

[0028] In the figures:

[0029] [Fig-1] Fig. 1 is a perspective view of a fluid product dispenser according to the invention,

[0030] [Fig.2] Fig.2 is an enlarged vertical cross-sectional view through the distributor of the [Fig.l],

[0031] [Fig.3] Fig.3 is an exploded perspective view of the dispenser shown in Figures 1 and 2.

[0032] [Fig.4] Fig.4 is a perspective and vertical cross-sectional view of part of the distributor of figures 1 to 3,

[0033] [Fig. 5] Fig. 5 is an exploded perspective view of part of the distributor of figures 1 to 3,

[0034] [Fig.6] [Fig.6] is a view similar to that of [Fig.5] with a viewing angle different,

[0035] [Fig.7a] Fig.7a is a perspective view of the distributor's fret piece the invention,

[0036] [Fig.7b] The [Fig.7b] is a top view of the fret piece of the [Fig.7a],

[0037] [Fig.8a] Fig.8a is a highly enlarged perspective view of the tip common connection of the distributor of the invention,

[0038] [Fig.8b] The [Fig.8b] is an exploded perspective view of the tip of the [Fig.8a],

[0039] [Fig.9] Fig.9 is a highly magnified view of a distributor cap of the invention, and

[0040] [Fig. 10a] Figures 10a, 10b and 10c are schematic perspective views illustrating a fret piece according to a second embodiment of the invention, in different assembly phases, and

[0041] [Fig. 10b] see [Fig. 10a]

[0042] [Fig. 10c] see [Fig. 10a]

[0043] [Fig. 11] The [Fig. 11] is a vertical cross-sectional view through the fret piece of figures 10a, 10b and 10c, being mounted on the pump fixing rings.

[0044] The distributor used to illustrate the present invention is a duo-type distributor, comprising two fluid product reservoirs RI and R2 and two distribution elements, two pumps PI and P2. A distributor with three reservoirs and three pumps, or even more, could also have been used to illustrate the present invention.

[0045] In Figures 1 to 3, it can be immediately observed that the two reservoirs RI and R2 are in direct contact with each other at two contact surfaces RI1 and R21. These two surfaces RI1 and R21 extend in a vertical plane, but it is also possible to imagine that these two surfaces are inclined or even curved. The two contact surfaces RI1 and R21 can be joined to each other by any suitable technique, such as bonding with any suitable material, such as an adhesive, enamel, a sol gel, etc. Of course, this type of bonding can result in more or less pronounced offsets between the two reservoirs. This can be referred to as the mutual positional tolerance of the reservoirs RI and R2.

[0046] At their upper part, the tanks RI and R2 each form a shoulder segment R12, R22 which together form an annular shoulder that is more or less contiguous depending on the mutual positional tolerance of the tanks. Beyond these shoulder segments, each tank RI, R2 forms a platform segment R13, R23 which together form a platform that is substantially contiguous depending on the mutual positional tolerances of the two tanks. From these platform segments, each tank forms a neck R14, R24 which protrudes upwards. The horizontal distance or center-to-center distance between the two necks R14 and R24 can vary depending on the manufacturing tolerance of the necks, but also depending on the mutual positional tolerance of the two tanks RI and R2. The same applies to the axial positioning or flatness at the upper annular edges of the two necks R14 and R24.A misalignment can therefore be observed depending on the manufacturing tolerances of the necks, but also depending on the mutual tolerance of the two tanks due to the intimate contact between the surfaces RI 1 and R21.

[0047] Consequently, it is impossible to guarantee a constant center distance and a zero pitch angle between the two collars R14 and R23. We can therefore speak of a center distance defect or tolerance and a pitch angle defect or tolerance. These defects or tolerances naturally arise from the mutual positioning of the two collars R14 and R23. Servos, whose reference is located at the two contact surfaces RI 1, R21. Traditionally, these tolerance defects do not exist when the reference frame is placed at the upper annular edge of the two tank necks. Thus, it can be said that, generally, this center-to-center distance and pitch defect or tolerance is encountered whenever the reference frame is not placed at the upper annular edges of the two tank necks. The mutual contact of the two tanks at the contact surfaces RI 1, R21 is just one example among others that generates this center-to-center distance and / or pitch defect or tolerance.

[0048] It is thus acknowledged that, in a batch of assemblies of attached tanks, the center-to-center distance and the mounting angle are not constant. This suggests the difficulties in mounting the upper assembly of the distributor. However, the present invention makes it possible to mitigate, or even eliminate, this mounting and operating difficulty, as will be seen below.

[0049] Starting with this set of adjoining reservoirs RI and R2, the first assembly step consists of mounting the two pumps PI and P2 onto and into the necks R14 and R24. The particular type of pump is not critical to the invention and will therefore not be described in detail. Very briefly, each pump PI, P2 comprises a pump body P1, P21, and a valve stem P12, P22 which is axially movable within its respective pump body P1, P21, by moving back and forth against a return spring. This is quite typical for a pump in the fields of perfumery, cosmetics, or pharmaceuticals.

[0050] To ensure a seal at the necks R14 and R24, neck seals J1 and J2 can be used. These seals are engaged around the pump bodies PI1 and P21, which form a collar that allows the seals J1 and J2 to be compressed onto their respective necks. To hold the pumps PI and P2 in place, fixing rings B1 and B2 are used. Each of these rings forms the attachment tabs B11 and B21, which engage around the necks R14 and R24 in a completely conventional manner.

[0051] For locking the mounting tabs B11, B21 of the two retaining rings B1, B2, a retaining piece 3 is provided according to the invention, which is more clearly visible in Figures 6, 7a, and 7b. This retaining piece 3, which is preferably made in one piece by injection molding of a suitable plastic material, comprises a mounting ring 35, which is here cylindrical and annular. However, other configurations can be imagined for defining at least one mounting zone, and advantageously two opposing zones, which are connected or separated. In the case of the mounting ring 35, it can be said that two mounting zones are continuously connected to form a single extended mounting zone. Inside this mounting ring 35, the retaining piece 3 defines two diametrically opposed areas 351. Between these two areas 351, the piece The clamp 3 comprises two locking clamps 31 and 32, respectively for the two mounting rings B1 and B2. These locking clamps 31 and 32 are cylindrical collars designed to tightly grip the mounting tabs B1 and B2 of the two mounting rings B1 and B2. The two locking clamps 31 and 32 are connected by a common wall 312, such that they can move relative to each other to modify their center distance and / or their position. Furthermore, the two locking clamps 31 and 32 are connected to the two mounting plates 351 by several flexible links 38, eight in number. It is then easy to understand that the two locking frets 31 and 32 can move inside the mounting ring 35, and even relative to each other, both axially and radially, so as to modify their center distance and / or their position.It can therefore be said that the locking frets 31 and 32 are mounted in a "floating" manner inside the mounting ring 35. Obviously, the degree of freedom of movement of the two frets 31 and 32 is limited to a few tenths of a millimeter, or even one millimeter.

[0052] In this way, it is possible to mount the fret piece 3 onto the two fixing rings Bl, B2 by engaging the locking frets 31 and 32 around the hooking tabs PI 1 and P21. In the final mounting position, the lower edge of the mounting ring 35 can come to rest against the shoulder formed by the shoulder segments R13 and R23, while the two locking frets 31 and 32 can be positioned with a center distance and / or angle error, thanks to the flexible links 38 and the common wall 312.

[0053] Advantageously, each locking ring 31, 32 is provided with an axial guide bushing 33, 34 which is supported by two tabs 36 and 37. More precisely, the tabs 36 extend diametrically opposite from the upper edge of the locking ring 31, each forming an inward bend to join the axial guide bushing 33. The same is true for the locking ring 32: the tabs 37 extend diametrically opposite from the upper edge of the ring 32, forming an inward bend to join the axial guide bushing 34. Thus, each axial guide bushing 33, 34 is in the form of a small turret which is suspended above its locking ring 31, 32 by pairs of bent tabs 36, 37. Each bushing extends coaxially with its locking ring.

[0054] As can be seen in [Fig. 2], the valve stems PI 1 and P22 extend axially inside the guide bushings 33 and 34. However, since the guide bushings 33 and 34 are positioned relative to their respective necks, the bushings 33 and 34 are perfectly positioned relative to the valve stems PI 1 and P22. In other words, the locking rings and the axial guide bushings are positioned with the same center-to-center distance and offset as the necks R14 and R24.

[0055] According to the invention, the distributor incorporates a common connection fitting 1, which is more clearly visible in Figures 8a and 8b. This fitting 1 comprises two inlet sleeves 11 and 12, intended to be fitted or inserted onto the free ends of the two valve stems PI 1 and P22. The fitting 1 also includes an outlet well 10 extending between the two sleeves 11 and 12. The outlet well 10 is advantageously located midway between the two sleeves 11 and 12. These sleeves are connected to the outlet well 10 by two conduits 15 and 16, which are flexible, so that the center distance and / or the angle of the two sleeves 11 and 12 can vary by deformation of the conduits 15 and 16, while leaving the outlet well 10 substantially static, due to its central axial positioning. Conduits 15 and 16 are flexible, but with a limited degree of deformation.They are made of a substantially rigid material, but with a curved configuration. Each conduit 15, 16 can be said to have a C-shaped configuration, so that the nozzle 1 as a whole has an S-shaped configuration. If a line is drawn through the two sleeves 11, 12 and the outlet well 10, conduit 15 can be said to extend on one side of this line while conduit 16 extends on the other side. Alternatively, both conduits 15 and 16 could be on the same side of the line and form an E.

[0056] Referring to [Fig. 8b], it can be seen that the common connecting end 1 comprises two parts, namely a base part forming the two inlet sleeves 11 and 12, and a cover part 1b forming the outlet well 10. The conduits 15 and 16 are formed by assembling the two parts 1 and 1b. More specifically, the base part forms two channels 15a and 16a that connect the inlet sleeves 11 and 12 to a well base 10a. As for the cover part 1b, it forms two covers 15b and 16b that connect sleeve covers 11b and 12b to a well cover 10b. Once the cover piece 1b is attached in a sealed manner to the base piece la, the sleeves 11 and 12 are closed by the sleeve covers 11b and 12b, the outlet well 10 is closed by the well cover 10a and the channels 15 and 16 are formed by the covers 15b and 16b attached to the chutes 15a and 16a, respectively.It can be noted that the junction line of the two parts 1a and 1b extends horizontally, that is to say in a plane perpendicular to the axis of the pumps.

[0057] The common connecting end 1 is thus mounted on the valve stems Pli, P22 by fitting the inlet sleeves 11 and 12, regardless of any deviation in the center distance and / or alignment of the valve stems. The inlet sleeves 11 and 12 accommodate these deviations in center distance and / or alignment tolerance by deforming the conduits 15 and 16, while maintaining the outlet well 10 in a substantially static manner.

[0058] Advantageously, each inlet sleeve 11, 12, or more precisely its cover 11b, 12b, is provided with a nipple 13, 14 that extends axially. The nipples 13, 14 can be said to extend axially upwards in line with the sleeves 11 and 12. Thus, the outlet well 1 is located midway between these two nipples 13 and 14. Preferably, the nipples 13 and 14 comprise a base 131, 141 of increased diameter.

[0059] According to the invention, the distributor also includes two caps 21 and 22 which are engaged on the nipples 13 and 14, respectively. The caps 21 and 22 are engaged more or less deeply around the nipples 13 and 14 depending on the defect or misalignment of the two nipples 13 and 14, as well as depending on the desired misalignment of the caps. For a zero offset of the angle of the caps 21, 22, and a nipple 13 which extends higher axially than the nipple 14, the cap 21 will be engaged more deeply around the nipple 13 than the cap 22 around the nipple 14. The more or less pronounced engagement of the caps 21, 22 on their respective nipples 13, 14 can be ensured by punching the ribs 23 formed inside the caps 21, 22 on the bases of increased diameter 131 and 141 of the nipples 13 and 14.Similarly, the caps 21, 22 can also be mounted on the nipples 13, 14 with a non-zero angle of incidence, i.e. with one cap higher than the other.

[0060] In the end, the center distance error is absorbed by the deformation capacity of the conduits 15 and 16 and the seating error is absorbed by the more or less deep engagement of the caps 21 and 22 on their respective studs 13 and 14. In the end, we have an outlet well 10 which is centered and a zero seating reference surface formed by the aligned upper wall of the two caps 21 and 22.

[0061] According to the invention, the distributor also includes a pusher 4 forming a central sleeve 40 that engages with the outlet well 10 of the nozzle 1. This central sleeve 40 is connected to a distribution orifice 43, which may be lateral. The pusher 4 also includes a support disc 41 that contacts the caps 21 and 22. The pusher 4 naturally defines an upper bearing surface 42 on which the user can press axially to move it. The pusher 4 advantageously includes a substantially cylindrical guide skirt 45 allowing axial sliding movement of the pusher 4.

[0062] The distributor of the invention also includes a cover 5 defining a large upper opening 50 for receiving the pusher 4. At its opposite end, the cover 5 forms a lower annular edge 51 intended to engage with the shoulder R12, R22 of the two reservoirs. For retaining the cover 5, its lower portion 52 is engaged around the mounting ring 35 of the retaining piece 3. This is visible in [Fig. 2]. Retaining profiles can be formed at the level of the ring. assembly 35 and / or the lower part 52 of the hood 5. The hood 5 also forms a lateral window 53 for the passage of the distribution orifice 43 of the pusher 4.

[0063] Referring again to [Fig. 2], it is now understood that the plunger 4 is axially guided by the sliding of its guide skirt 45 inside the cap 5. This ensures that the plunger 4 does not suffer from misalignment. The final position of the two caps 21 and 22 on their respective studs 13 and 14 can be achieved at the factory during the assembly of the distributor, for example, by means of a piston on the assembly machine. This piston allows the two caps 21 and 22 to be positioned with a predetermined angle of descent, which may or may not be zero. Correcting the misalignment during factory assembly allows the plunger 4 to deliver the predetermined volume of the two liquids in a repeatable manner.

[0064] Next, the distributor can be used in a completely conventional manner by pressing the pusher 4 so as to push it into the inside of the cover 5. The movement of the pusher 4 causes the valve stems PI 1 and P22 to move in their respective pump bodies PI 1, P21 via the connecting sleeves 11, 12, the nipples 13, 14 and the caps 21, 22. The perfectly axial movement of the sleeves 11 and 12 is ensured by the axial guide bushings 33 and 34.

[0065] It should be noted that the common connection fitting 1 can be used on pumps PI and P2 that are fixed to the collars R14, R24 by means other than the fixing rings B11, B21 and the flange piece 3. For example, the pumps can be mounted on the collars by crimping or screwing. Conversely, it is possible to use the flange piece 1 without the common connection fitting 1. However, their combined use is advantageous.

[0066] Preferably, the RI and R2 tanks are made of glass, but other suitable materials can be used.

[0067] Instead of the two caps 21 and 22, the inlet sleeves 11 and 12 can be more or less engaged on the valve stems PI 1 and P22, with the support disc 41 of the tappet 4 then bearing directly against the common connecting end. This variant, not shown, eliminates the two caps 21 and 22.

[0068] Referring now to Figures 10a, 10b, 10c and 11, a second embodiment of the fret piece, which is referenced as 3', can be seen. This fret piece 3', unlike that of the first embodiment 3, forms only one of the two locking frets, namely fret 32', the other fret 31' being a piece attached to fret piece 3'. However, it is possible that fret 31' is molded as a single piece with fret piece 3', connected by a bridge of material to be broken 315'. Referring to [Fig. 10a], it can be seen that the fret piece 3' forms the fret 32', the mounting ring 35', and the mounting surfaces 351', just like the fret piece 3. In contrast, the fret piece 3' further forms an insertion housing 311' which is accessible laterally through an access passage 312', which is located just below the ring 35', opposite to where the fret 32' touches the ring 35'. The housing 311' includes at least one pair of sliding ribs 313', which are arranged parallel and opposite. The housing 311' may, for example, comprise two parallel and opposing flat walls 311a, adjacent to the access passage 312', and a semi-cylindrical bottom wall 311b, which connects the two flat walls 311a. The sliding ribs 313' extend horizontally on the flat walls 311a and may terminate at the level of the semi-cylindrical bottom wall 311b.

[0069] The locking collar 31' may be in the form of a cylindrical sleeve, the outer wall of which forms two sliding grooves 314', which are arranged parallel and opposite. The collar 31', which may initially be connected to the collar piece 3' by the breakable bridge 315', may be detached from the collar piece 3', and then inserted into the housing 311' of the collar piece 3' through the access passage 312'. This is visible in [Fig. 10b]. The sliding grooves 314' of the collar 31' will engage with the sliding ribs 313' of the housing 311'. Therefore, the fret 31' is fixed to the fret piece 3', while being able to slide in the housing 311', moving closer to or further away from the fret 32'. The sliding axis of the fret 31' extends diametrically through the fret 32'.

[0070] Without leaving the scope of the invention, it is possible to consider making the fret 32' in the same way as the fret 31', so that the fret piece would then form two insertion housings.

[0071] The retaining piece 3', with its sliding retaining ring 31', can be mounted on the retaining rings Bl, B2 of the pumps PI, P2, as shown in [Fig. 11]. The retaining ring 31' will move in its housing 311' according to the spacing of the rings Bl, B2, the center distance of which depends on the spacing of the necks of the two reservoirs.

[0072] Thanks to the invention, the center distance and / or seating defects at the level of the tank necks are compensated for.

Claims

Demands

1. Fluid product dispenser comprising: - at least two reservoirs (RI, R2) each equipped with a pump (PI, P2) including a valve stem (P12, P22) movable back and forth about an axis X, - a common connection fitting (1) including inlet sleeves (11, 12), conduits (13, 16) and an outlet well (10), the inlet sleeves (11, 12) being mounted on the valve stems (P12, P22), the inlet sleeves (11, 12) being connected by conduits (15, 16) to the outlet well (10), - a common plunger (4) including a dispensing orifice (43) connected to the outlet well (10), the plunger (4) being movable back and forth about the axis X, - fixing rings (B1, B2), - locking rings (31, 32; 31', 32'), in which the pumps (PI, P2) are mounted on the tanks (RI, R2) by means of the fixing rings (Bl, B2) held in place by the locking rings (31, 32;31', 32') engaged axially around the fixing rings (B1, B2), the locking frets (31, 32; 31', 32') being connected together while being movable relative to each other, so that the mutual position of the locking frets (31, 32; 31', 32') is adaptable according to the mutual position of the fixing rings (B1, B2), characterized in that a fret piece (3') defines at least one insertion housing (311'), in which a locking fret (31') is received in a sliding manner.

2. Distributor according to claim 1, wherein the insertion housing (311') comprises sliding ribs (313') and the locking fret (31') comprises sliding grooves (314') cooperating with the sliding ribs (313') to guide the locking fret (31') away from / towards the other locking fret (32').

3. Distributor according to claim 1 or 2, wherein the locking fret (31') is initially connected to the fret piece (3') by a bridge of material to be broken (315').

4. Distributor according to any one of the preceding claims, wherein the common pusher (4) slides axially in a hood (5) which is mounted on the fret piece (3; 3'), the hood (5) advantageously defining a window (53) in which is housed the distribution orifice (43) of the common pusher (4).

5. Distributor according to claim 4, wherein the fret piece (3; 3') comprises at least two mounting areas (35) for the hood (5).

6. Distributor according to claim 5, wherein the mounting areas (35) are rigid, the mutual position of the mounting areas (35) in a plane perpendicular to the X axis being practically insensitive to variations in mutual position of the fixing rings (B1, B2) in a plane perpendicular to the X axis.

7. Distributor according to any one of the preceding claims, wherein the conduits (15, 16) are substantially rigid but curved, so as to confer limited deformability.

8. Distributor according to any one of the preceding claims, wherein the common connecting end (1) is made of two parts (1a, 1b) joined one on top of the other in a sealed manner, advantageously along a joining plane that extends perpendicularly to the X-axis.

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