Device for fastening a dispensing pump on a bottle containing a product

A device for fastening a dispensing pump on a bottle containing a product, a sleeve fastening the pump and fastening on the bottle, a dressing hoop intended to be mounted by axial sliding around a peripheral seating of the sleeve, the peripheral seating having axial splines and the internal wall of the hoop having axial ribs which are arranged to be placed in the splines during the mounting of the hoop around the seating.

FIELD OF THE INVENTION

The invention relates to a device for fastening a dispensing pump on a bottle containing a product, as well as to a dispensing bottle wherein the pump is fastened by the intermediary of such a device.

BACKGROUND OF THE INVENTION

In particular, the bottle allows for the packaging and the dispensing of a fluid product, in particular of a liquid or of a cream, for example a perfume, a cosmetic product or a pharmaceutical product.

Such bottles are known comprising a body defining a reservoir for packaging the product, a neck overmounting said body by defining an upper opening for said reservoir, and a pump mounted in said upper opening by positioning the means of supplying said pump inside said reservoir. As such, the pump makes it possible to restore the product packaged in the reservoir.

In order to provide the positioning and the fastening of the pump in relation to the body, the use of a sleeve is known having on the one hand, means of fastening the pump and on the other hand, means of fastening the sleeve on the neck.

Furthermore, this sleeve can be dressed by means of a hoop in order to improve the aesthetics of the bottle. In particular, the dressing hoop can be mounted by axial sliding around a peripheral seating of the sleeve.

In this embodiment, the problem arises of the reliability of the mounting of the hoop on the sleeve, in particular relatively to the stresses applied on the hoop in the axial direction and/or in rotation. Furthermore, in the case of a reversible fastening of the pump on the bottle, this problem is even more critical as the dismounting of the pump is carried out by manually actuating the means of fastening by the intermediary of the hoop.

SUMMARY OF THE INVENTION

In order to overcome this problem, the document WO-2007/042701 proposes a device for fastening comprising on the one hand, a sleeve of which the peripheral seating to be dressed is smooth and on the other hand, a hoop having elongated ribs formed of several projections separated by cavities. As such, by providing that the ribs delimit an inside diameter which is less than the outside diameter of the smooth seating, said ribs are inlayed in the sleeve during the mounting.

However, the inlaying induces a plastic deformation of the sleeve which can in particular be passed on to the means of fastening. As such, the improvement of the aesthetics by means of the hoop can result in a decrease in the reliability of the fastening of the pump on the bottle, in particular relatively to the seal that this fastening must provide.

Furthermore, the mounting of the hoop requires the application of a force that is sufficient in order to realise the inlaying, which can result in an alteration of the aesthetics of the hoop.

The invention aims to perfect the prior art by proposing in particular a device for fastening a dispensing pump on a bottle, said device procuring advantageous aesthetics by limiting the mechanical stresses induced by its mounting.

To this effect, and according to a first aspect, the invention proposes a device for fastening a dispensing pump on a bottle containing a product, said device comprising a sleeve having means of fastening the pump and means of fastening on said bottle, said device further comprising a dressing hoop intended to be mounted by axial sliding around a peripheral seating of the sleeve, the peripheral seating having axial splines and the internal wall of the hoop having axial ribs which are arranged in order to be positioned in said splines during the mounting of said hoop around said seating.

According to a second aspect, the invention proposes a dispensing bottle comprising a body defining a reservoir for the packaging of a product, a neck overmounting said body by defining an upper opening for said reservoir, and a pump mounted in said upper opening by positioning the means of supplying of said pump inside said reservoir, said bottle further comprising such a device for fastening, the pump being fastened to the sleeve which is fastened on the neck, the hoop being mounted around the peripheral seating with the ribs arranged in the splines.

DETAILED DESCRIPTION OF THE INVENTION

In relation with the figures, a bottle is described hereinbelow intended to contain a fluid product in order to dispense it. In particular examples, the product can be a liquid or a cream, for example a perfume, a cosmetic product or a pharmaceutical product.

The bottle can be formed from rigid material, in particular from glass or from plastic material, in order to include a body1defining a reservoir for packaging the product. The body1is overmounted by a neck2formed of a single part with said body by defining an upper opening for said reservoir.

The dispensing bottle further comprises a pump3mounted in the upper opening by positioning the means of supplying of said pump inside the reservoir. The pump shown comprises a body of which the periphery is mounted without clamping in the opening.

The body has a lower portion which is provided with a supplying orifice, the means of supplying comprising a dip tube4having an upper portion fixed in the orifice and a lower portion arranged against the bottom of the reservoir.

Moreover, the pump comprises a push-button5provided with a dispensing orifice6. According to a known embodiment, the button5actuates in reversible translation a nozzle on a dispensing course and a piston is also mounted on the nozzle between a state of sealing and a state of supplying the orifices of said nozzle. However, the invention is not limited to a particular embodiment of the pump3.

In order to provide for the positioning and the fastening of the pump3in relation to body1, the bottle further comprises a device for fastening said pump on the neck of said bottle, said device comprising a sleeve7which can be made in a single piece from ductile material, in particular from plastic material of the polyolefin type.

The device for fastening further comprises a dressing hoop8of the sleeve7, in particular arranged to mask the neck portion of the bottle, said hoop can be made from rigid material such as metal, for example aluminium, in order to have advantageous aesthetics. In the embodiments shown, the hoop8has a cylindrical geometry of revolution which extends axially over a length which is sufficient to provide for its masking function.

The sleeve7has means of fastening of the pump and means of fastening on the neck2. In the embodiments shown, the sleeve7has a geometry of revolution formed by an upper crown9whereunder extends a lower skirt10, the outside diameter of the crown9being less than that of the skirt10.

The crown9forms a housing11wherein the body of the pump3is fastened to the sleeve7by snapping, the fastening of the sleeve7—pump3unit on the bottle being carried out by screwing. For this, the outside of the neck2and the inside of the skirt10are provided with a complementary screw thread12. However, the invention is not limited to such an embodiment for the fastening of the sleeve7on the neck2. In particular, a fastening by snapping of the sleeve7on the neck2can be used. Likewise, the invention is not limited to such an embodiment for the fastening of the body of the pump3to the sleeve7.

In order to provide for its dressing function, the hoop8is intended to be mounted by axial sliding around a peripheral seating13of the sleeve7. In the figures, the peripheral seating13is annular and extends on the outside periphery of the skirt10. In particular, the peripheral seating13therefore extends around the screw thread12which is formed on the inside of the skirt10.

The peripheral seating13has axial splines14which are separated by bridges of material15. In particular, the splines14include a bottom with a cavity which is delimited on the seating13between two projecting edges, the bridges of material15being delimited by an edge of respectively two adjacent splines14. As such, the bridges of material15form an inscribed diameter which is greater than that formed by the bottom of the splines14.

In the embodiments shown, the splines14extend axially over the entire exterior of the skirt10in such a way as to exit in the upper portion and in the lower portion of the latter.

Moreover, the internal wall of the hoop8has axial ribs16which are arranged to be positioned in the splines14during the mounting of said hoop around the seating13. As such, the splines14being preformed on the seating13, the mounting does not require an inlaying of the ribs16but a simple sliding. As such, in particular in the case where the seating13extends around means of fastening, a possible deformation of the latter is avoided during the mounting.

Furthermore, the engagement of the ribs16in the splines14provides for the maintaining in rotation of the hoop8relatively to the sleeve7, in particular during the unscrewing of the pump3. In particular, in order to combine the sliding without deformation and the maintaining in rotation, the inscribed diameter formed by the ribs16can be substantially identical to that formed by the bottoms of the splines14, or very slightly less in order to ensure via friction an axial retention of the hoop8on the sleeve7.

The hoop8can be arranged to be mounted with axial clamping on the sleeve7, in such a way as to render reliable the fastening of the hoop8on the sleeve7relatively to the axial forces. In particular, the internal wall of the hoop8can be arranged, in particular relatively to its internal nominal diameter, in order to ensure the axial clamping via interaction with the bridges of material15.

Moreover, in the case of a sleeve7snapped on the neck2, the axial clamping of the hoop8can ensure a rendering reliable of said snapping by radially retaining the means of snapping on.

According to another embodiment, the fastening of the pump3can be carried out by means of a sleeve7comprising a deformable skirt between a mounting configuration wherein said skirt can be positioned around the neck2and a clamping configuration of said skirt around said neck in order to provide for the fastening. In particular, the clamping configuration can be obtained by the mounting of the hoop8on the sleeve7.

Moreover, the hoop8and/or the sleeve7can comprise means of axial fastening of said hoop around said sleeve. In theFIG. 2, the sleeve7comprises a snap ring17intended to be arranged in a corresponding groove18of the hoop8.

More precisely, the ring17is formed on a second skirt19of the sleeve7which surrounds the peripheral seating13. The hoop8further comprises two skirts, an inside skirt8abearing the ribs16and an outside skirt8bbearing the groove18.

In relation withFIGS. 1 to 3, the ribs16are elongated and have a rectangular section, the number of said ribs being complementary to that of the splines14. Furthermore, as shown in particular in the enlargement inFIG. 1b,the geometry of the ribs16is complementary to that of the splines14, with a slight lateral clearance on both sides in order to facilitate the sliding. In the enlargement inFIG. 2b, the width of the splines14is greater than that of the ribs16.

Moreover,FIGS. 3 to 5show splines14which have an upper chamfer20arranged to facilitate the entry of the ribs16into said splines during the mounting. Furthermore, still to facilitate mounting, the internal wall of the hoop8has a lower portion21whereon the ribs16do not extend.

In theFIGS. 4 and 5, the splines14as well as the ribs16have a converging profile in the direction of sliding. As such, by enlarging the entry chamfer20, the angular orientation of the hoop8is facilitated in relation to sleeve7in terms of mounting. InFIG. 5, this enlargement is maximised by providing that the splines14and the bridges of material15form an alternating succession of triangles arranged head-to-tail.