Device for dispensing a fluid product, comprising a pump

Abstract

The invention relates to a device for dispensing a fluid product, comprising a pump (10) having a pump body (11) attached to a neck (2) of a reservoir (1) containing a fluid product to be dispensed, said neck (2) comprising an upper axial edge (2'), a compression element (9; 9') being arranged on said upper axial edge (2'), said pump comprising a turret (50), said turret (50) comprising an attachment portion (51) for direct attachment to said pump body (11), a compression portion (52) for compressing said compression element (9; 9') on said upper axial edge (2') of said neck (2), and a fitting sleeve (53) extending axially downwards under said compression portion (52), said fitting sleeve (53) fitting into said neck (2) of said reservoir (1) during the assembly of said pump (10) on said reservoir (1), said fitting sleeve (53) comprising at least one radial sealing profile (54) which, after assembly, sealingly engages with said neck (2) of said reservoir (1).

Description

[0001] Fluid product dispensing device comprising a pump

[0002] The present invention relates to a fluid product dispensing device comprising a pump.

[0003] A conventional pump comprises a pump body defining a pump chamber, with at least one piston sliding in said pump body to dispense a dose of a fluid product contained in a reservoir to which the pump is fixed. The pump is fixed to the neck of a reservoir by means of a fixing ring, and generally comprises a turret, which is an element fixed to the pump body and which comes into contact with a neck seal provided to ensure sealing at the neck of the reservoir.

[0004] A disadvantage of this type of pump is that the fluid product may come into contact with the neck seal, which may absorb some of the fluid.

[0005] The aim of the present invention is to provide a fluid product dispensing device which does not reproduce the aforementioned drawbacks.

[0006] The present invention aims in particular to provide a fluid product dispensing device which eliminates the risks of absorption of the fluid product by a neck seal.

[0007] The present invention also aims to provide a fluid product dispensing device which allows relatively high manufacturing tolerances.

[0008] The present invention also aims to provide a fluid product dispensing device which is simple and inexpensive to manufacture and assemble and reliable to use, while guaranteeing perfect sealing.

[0009] The present invention therefore relates to a fluid product dispensing device comprising a pump having a pump body fixed to a neck of a reservoir containing a fluid product to be dispensed, said neck comprising an upper axial edge, a compression element being arranged on said upper axial edge, said pump comprising a turret, said turret comprising a fixing part for fixing directly to said pump body, a compression part for compressing said compression element on said upper axial edge of said neck, and a fitting sleeve extending axially downwards under said compression part, said fitting sleeve coming, during the assembly of said pump on said reservoir, to be fitted into said neck of said reservoir, said fitting sleeve comprising at least one radial sealing profile which cooperates, after assembly, in a sealed manner with said neck of said reservoir.

[0010] Advantageously, each radial sealing profile is formed by a peripheral sealing bead.

[0011] According to a first advantageous embodiment, said fitting sleeve comprises a single radial sealing profile.

[0012] According to a second advantageous embodiment, said fitting sleeve comprises at least two radial sealing profiles, axially offset.

[0013] According to a first advantageous variant, said compression element is produced in the form of a neck seal.

[0014] According to a second advantageous variant, said compression element is formed by a deformable lip, integral with said turret.

[0015] Advantageously, said compression part is formed by a radial annular wall of said turret.

[0016] Advantageously, said turret is a single-piece part which is fixed directly to said pump body, which is adapted to cooperate directly with said compression element to compress it on said upper axial edge of said neck, and which is adapted to cooperate directly with the interior of said neck.

[0017] These and other features and advantages of the present invention will become more clearly apparent during the following detailed description, given by way of non-limiting example, with reference to the attached drawings, in which: Figure 1 is a schematic sectional view of a fluid product dispensing device comprising a pump, Figures 2 to 4 are schematic sectional views, showing in detail the neck of the reservoir, the turret and the fixing ring, during assembly of the pump on the reservoir, according to a first advantageous embodiment, Figure 5 is a view similar to that of Figure 4, showing a second advantageous embodiment, Figure 6 is a schematic cut-out perspective view of the turret of Figure 5, and Figure 7 is a view similar to that of Figure 4, showing a third advantageous embodiment.

[0018] The terms "axial" and "radial" refer to the longitudinal central axis of the device. The terms "top", "bottom", "upper" and "lower" refer to the upright position of the device shown in Figure 1.

[0019] The following description will be made with reference to three embodiments, but it is understood that other variants are possible.

[0020] In the first embodiment, shown in Figures 1 to 4, a conventional type fluid product dispensing device is shown.

[0021] The device comprises a reservoir 1 provided with a neck 2, a pump 10 being assembled on said neck 2 of the reservoir 1 by means of a fixing ring 5, with the interposition of a compression element 9, useful for compensating for the dimensional tolerances of the parts and thus ensuring reliable fixing in all circumstances.

[0022] In the examples of figures 1 to 5, the compression element is a neck seal 9 arranged on an upper axial edge 2' of the neck 2 of the tank 1. In the example of figure 7, the compression element is a deformable lip 9', integral with the turret 50, and which cooperates with said upper axial edge 2'.

[0023] The pump 10 comprises a pump body 11 provided with an upper end edge 12. A piston 20 slides in a sealed manner inside said pump body 11 at each actuation to dispense a dose of product from the reservoir 1.

[0024] The internal structure of the pump will not be described in more detail hereinafter, since the present invention applies to all types of pumps, and is in no way limited by the specific characteristics of the pump given as an example in the figures.

[0025] Conventionally, the piston 20 is integral, in particular in one piece, as shown in the drawings, with an actuating rod 30 on which a dispensing head 60 or pusher is assembled, on which the user presses to actuate the pump 10.

[0026] The pump body 11, in particular its upper end edge 12, is fixed in a turret 50 at the level of a fixing part 51 of said turret.

[0027] The turret 50 also comprises a compression part 52, preferably formed by a radial annular wall, which cooperates during assembly with the compression element 9 which is interposed between the upper edge of the neck 2 and said compression part 52.

[0028] The turret 50 comprises a fitting sleeve 53 extending axially downwards under said compression part 52, said fitting sleeve 53 coming, during assembly, to fit into the axially upper part of the neck 2 of the tank 1.

[0029] The turret 50 therefore forms a single-piece part which on the one hand is fixed directly to the pump body 11, which on the other hand cooperates directly with the compression element 9, 9' to compress it on the upper axial edge 2' of the neck 2, and which finally cooperates directly with the interior of said neck 2 of the reservoir 1.

[0030] The 50 turret is advantageously made by molding in a suitable plastic material.

[0031] A ferrule 55 is assembled inside the pump body 11, and cooperates with the piston 20 to define the rest position of the latter.

[0032] In the example of Figure 1, the ferrule 55 is formed in one piece with the turret 50. According to the invention, the fitting sleeve 53 comprises at least one radial sealing profile 54 which cooperates in a sealed manner with the neck 2 of the reservoir 1.

[0033] In the example of figures 2 to 4 and 7, there is a single radial sealing profile 54, advantageously formed by a peripheral sealing bead.

[0034] In the example of Figures 5 and 6, there are two radial sealing profiles 54a, 54b offset axially on said sealing sleeve 53, advantageously each formed by a peripheral sealing bead.

[0035] Of course, any number of sealing profiles 54 can be provided.

[0036] This at least one sealing profile 54 creating a sealed contact with the interior of the neck 2 of the tank 1, it is no longer necessary to provide a neck seal, which is therefore replaced here by the compression element 9.

[0037] Of course, this compression element 9 can be produced in the form of a neck seal, as in the examples of figures 1 to 5.

[0038] Alternatively, it can be formed by a deformable lip 9', integral with the turret 50, and which cooperates with the upper axial edge 2' of the neck 2 of the reservoir 1, as visible in figure 7.

[0039] An essential advantage of the present invention is that any risk of contact between the fluid product contained in the reservoir 1 and a neck seal capable of absorbing fluid is avoided by the presence of at least one radial sealing profile 54.

[0040] Although the present invention has been described with reference to particular embodiments thereof, it is understood that this description is not limiting and that a person skilled in the art may make any useful modification thereto without departing from the scope of the present invention as defined by the appended claims.

Claims

Claims Device for dispensing fluid product comprising a pump (10) having a pump body (11) fixed on a neck (2) of a reservoir (1) containing a fluid product to be dispensed, said neck (2) comprising an upper axial edge (2'), a compression element (9; 9') being arranged on said upper axial edge (2'), said pump comprising a turret (50), said turret (50) comprising a fixing part (51) for fixing directly to said pump body (11), a compression part (52) for compressing said compression element (9; 9') on said upper axial edge (2') of said neck (2), and a fitting sleeve (53) extending axially downwards under said compression part (52), said fitting sleeve (53) coming, during the assembly of said pump (10) on said reservoir (1), to fit into said neck (2) of said reservoir (1 ),characterized in that said fitting sleeve (53) comprises at least one radial sealing profile (54) which cooperates, after assembly, in a sealed manner with said neck (2) of said tank (1). Device according to claim 1, in which each radial sealing profile (54) is formed by a peripheral sealing bead. Device according to claim 1 or 2, in which said fitting sleeve (53) comprises a single radial sealing profile (54). Device according to claim 1 or 2, in which said fitting sleeve (53) comprises at least two radial sealing profiles (54a, 54b), axially offset. Device according to any one of the preceding claims, in which said compression element (9) is produced in the form of a neck seal., Device according to any one of claims 1 to 4, wherein said compression element (9') is formed by a deformable lip, integral with said turret (50). Device according to any one of the preceding claims, wherein said compression portion (52) is formed by a radial annular wall of said turret (50). Device according to any one of the preceding claims, wherein said turret (50) is a single-piece part which is fixed directly to said pump body (11), which is adapted to cooperate directly with said compression element (9, 9') to compress it on said upper axial edge (2') of said neck (2), and which is adapted to cooperate directly with the interior of said neck (2).

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