Device for dispensing fluid product comprising 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 the fluid product to be dispensed, said neck (2) comprising an upper axial edge (2 ') on which a compression element (9; the invention relates to a pump (9, 9 ') comprising a tower (50) comprising: an attachment portion (51) for direct attachment to the pump body (11); a compression portion (52) for compressing the compression elements (9; 9 ') on the upper axial edge (2') of the neck (2); 9 '); and a fitting sleeve (53) extending axially downward below the compression portion (52), the fitting sleeve (53) fitting into the neck (2) of the reservoir (1) during the assembly of the pump (10) on the reservoir (1), the fitting sleeve (53) comprising at least one radial sealing profile (54), the at least one radial sealing profile is sealingly engaged with the neck (2) of the reservoir (1) after assembly.

Description

Technical Field

[0001] The present invention relates to a device for dispensing a fluid product, the device comprising a pump. Background Art

[0002] Conventional pumps include a pump body defining a pump chamber in which at least one piston slides to dispense a dose of fluid product contained in a reservoir to which the pump is attached. The pump is attached to the neck of the reservoir by an attachment ring, and the pump generally includes a tower, which is an element attached to the pump body and which contacts a provided neck seal to ensure a seal at the neck of the reservoir.

[0003] A drawback of this type of pump is that contact between the fluid product and the neck seal may occur, in particular, part of the fluid may be absorbed. Summary of the Invention

[0004] The present invention aims to provide a device for dispensing a fluid product that does not reproduce the above drawbacks.

[0005] Another object of the present invention is to provide a device for dispensing a fluid product that reduces the risk of the fluid product being absorbed by the neck seal.

[0006] Another object of the present invention is to provide a device for dispensing a fluid product that allows relatively large manufacturing tolerances.

[0007] Another object of the present invention is to provide a device for dispensing a fluid product that is simple to manufacture, inexpensive, simple to assemble, and reliable in use, while ensuring perfect sealing.

[0008] The present invention thus relates to a device for dispensing a fluid product, the device comprising a pump having a pump body attached to the neck of a reservoir containing the fluid product to be dispensed, the neck including an upper axial edge, a compression element being arranged on the upper axial edge, the pump including a tower having: an attachment portion for attaching to the pump body; a compression portion for compressing the compression element on the upper axial edge of the neck; and a fitting sleeve axially extending downwardly below the compression portion, during assembly of the pump onto the reservoir, the fitting sleeve being fitted into the neck of the reservoir, the fitting sleeve including at least one radial sealing profile that sealingly engages the neck of the reservoir after assembly.

[0009] Advantageously, each radial sealing profile is formed by a peripheral sealing flange.

[0010] According to a first advantageous embodiment, the fitting sleeve includes a single radial sealing profile.

[0011] According to a second advantageous embodiment, the mounting sleeve comprises at least two radially sealing profile portions that are axially offset.

[0012] According to a first advantageous variant, the compression element is made in the form of a neck seal.

[0013] According to a second advantageous variant, the compression element is formed by a deformable lip fixed to the tower.

[0014] Advantageously, the compression portion is formed by a radial annular wall of the tower.

[0015] Advantageously, the tower is a one-piece part that is directly attached to the pump body, adapted to directly engage with the compression element to compress the compression element against the upper axial edge of the neck, and adapted to directly engage with the interior of the neck. Description of the Drawings

[0016] These features and advantages of the present invention, as well as other features and advantages, become more apparent from the following detailed description given by way of non-limiting examples and with reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic cross-sectional view of a device for dispensing a fluid product including a pump,

[0018] Figures 2 to 4 is a schematic cross-sectional view showing in detail the neck of the reservoir, the tower, and the attachment ring during assembly of the pump on the reservoir according to a first advantageous embodiment,

[0019] Figure 5 is similar to Figure 4 and shows a second advantageous embodiment;

[0020] Figure 6 is Figure 5 a schematic cutaway perspective view of the tower of

[0021] Figure 7 is similar to Figure 4 and shows a second advantageous embodiment. Detailed Description

[0022] The terms "axial" and "radial" are oriented relative to the longitudinal central axis of the device. The terms "top", "bottom", "upper", and "lower" are referenced to the Figure 1 upright position of the device shown in

[0023] The following description will refer to three embodiments, but it should be understood that other variants are possible.

[0024] In Figures 1 to 4In the first embodiment represented, a conventional type of device for dispensing a fluid product is shown.

[0025] The device comprises a reservoir 1 provided with a neck 2, on which a pump 10 is assembled via an attachment ring 5, in which a compression element 9 is inserted, which can be used to compensate for dimensional tolerances of the parts, thus ensuring a reliable attachment in all cases.

[0026] In Figures 1 to 5 the example of Figure 7 the compression element is a neck seal 9 arranged on the upper axial edge 2' of the neck 2 of the reservoir 1. In

[0027] the example of

[0028] the compression element is a deformable lip 9' fixed to the turret 50 and engaging with the upper axial edge 2'.

[0029] The pump comprises a pump body 11, which is provided with an upper end edge 12. A piston 20 slides in a sealed manner inside the pump body 11 during each actuation to dispense a dose of the composition from the reservoir 1.

[0030] The pump body 11, specifically its upper end edge 12, is fixed in the turret 50 at the attachment part 51 of the turret 50.

[0031] The turret 50 also comprises a compression part 52, preferably formed by a radial annular wall, which engages with the compression element 9 between the upper edge of the neck 2 and this compression part 52 during assembly.

[0032] The turret 50 comprises a fitting sleeve 53 extending axially downwards below the compression part 52, which fits during assembly onto the upper axial part of the neck 2 of the reservoir 1.

[0033] The turret 50 thus forms a one-piece part, which is directly connected on the one hand to the pump body 11, on the other hand engages directly with the compression elements 9, 9' to compress this compression element against the upper axial edge 2' of the neck 2, and finally engages directly with the inside of the neck 2 of the reservoir 1.

[0034] The turret 50 is advantageously made by molding using a suitable plastic material.

[0035] The ferrule 55 is assembled within the pump body 11 and cooperates with the piston 20 to define the stop position of the piston.

[0036] In Figure 1 the example of, the ferrule 55 forms a single piece with the tower 50.

[0037] According to the invention, the mounting sleeve 53 includes at least one radial sealing profile 54 which sealingly engages with the neck 2 of the container 1.

[0038] In Figures 2 to 4 and Figure 7 the example of, there is a single radial sealing profile 54 advantageously formed by a peripheral sealing flange.

[0039] In Figure 5 and Figure 6 the example of, there are two axially offset radial sealing profiles 54a, 54b on the sealing sleeve 53, advantageously each formed by a peripheral sealing flange.

[0040] Naturally, any number of sealing profiles 54 can be provided.

[0041] At least one sealing profile 54 forms a sealing contact with the interior of the neck 2 of the reservoir 1, so that it is no longer necessary to provide a neck seal, which is thus replaced here by the compression element 9.

[0042] Of course, this compression element 9 can be made in the form of a neck seal, as in the Figures 1 to 5 example of.

[0043] Alternatively, the compression element can be formed by a deformable lip 9' fixed to the tower 50 and engaging with the upper axial edge 2' of the neck 2 of the reservoir 1, as can be seen in Figure 7 the example of.

[0044] A basic advantage of the invention is that, by the presence of at least one radial sealing profile 54, any risk of contact between the fluid product contained in the reservoir 1 and a neck seal which could absorb the fluid is avoided.

[0045] Although the invention has been described above with reference to specific embodiments of the invention, the description is naturally non - restrictive and those skilled in the art can apply any useful modifications thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. 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 the fluid product to be dispensed, the neck (2) including an upper axial edge (2') on which a compression element (9; 9') is arranged, the pump including a tower (50) which includes: An attachment part (51) for attachment to the pump body (11); A compression part (52) for compressing the compression element (9; 9') located on the upper axial edge (2') of the neck (2); and a fitting sleeve (53) extending axially downward below the compression part (52), during assembly of the pump (10) on the reservoir (1), the fitting sleeve (53) is fitted into the neck (2) of the reservoir (1), characterized in that the fitting sleeve (53) includes at least one radial sealing profile (54), and the at least one radial sealing profile is sealingly engaged with the neck (2) of the reservoir (1) after assembly.

2. The device according to claim 1, wherein Each radial sealing profile (54) is formed by a peripheral sealing flange.

3. The device according to claim 1 or 2, wherein The fitting sleeve (53) includes a single radial sealing profile (54).

4. The device according to claim 1 or 2, wherein The fitting sleeve (53) includes at least two axially offset radial sealing profiles (54a, 54b).

5. The device according to any one of the preceding claims, wherein, The compression element (9) is in the form of a neck seal.

6. The device according to any one of claims 1 to 4, wherein The compression element (9') is formed by a deformable lip fixed to the tower (50).

7. The device according to any one of the preceding claims, wherein, The compression part (52) is formed by a radial annular wall of the tower (50).

8. The device according to any one of the preceding claims, wherein, The tower (50) is a one-piece component, the tower is directly attached to the pump body (11), the tower is adapted to directly engage with the compression elements (9, 9') to compress the compression elements on the upper axial edge (2') of the neck (2), and the tower is adapted to directly engage with the interior of the neck (2).

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