FR3071138A1 - PACKAGING AND DISPENSING ASSEMBLY OF A PRODUCT, ESPECIALLY COSMETIC, COMPRISING A RECALL MEMBER TO CONTRAIND THE ENTIRELY IN A CLOSURE POSITION - Google Patents

Abstract

An assembly (10) for packaging and dispensing a product, in particular a cosmetic product, comprising a main reservoir (20) delimiting at least one internal volume containing said product, a closing part (30) intended to seal said internal volume and comprising at least one passage opening (33) towards said internal volume, and a capsule (40) delimiting a metering chamber (46) and comprising at least one dispensing orifice (47) associated with the passage opening (33), said capsule (40) being rotatably mounted on said closure portion (30) between a first closed position in which the passage opening (33) and the dispensing orifice (47) are staggered so as to prevent the passage from the product of the internal volume to the metering chamber (46) and a second open position in which the passage opening (33) and the dispensing orifice (47) are superimposed so as to allow the passage of the product of the internal volume e to the dosing chamber (46). Said assembly comprises at least one resiliently deformable return member (34) located between the closure part (30) and the capsule (40) and configured to automatically move said capsule (40) in the first closed position when the latter is closed. 'is more constrained in the second open position.

Description

Packaging and distribution assembly for a product, in particular a cosmetic product, comprising a return member for forcing the assembly into a closed position

The present invention relates to the field of packaging and distribution sets for a cosmetic product.

By “cosmetic product”, is understood in particular within the meaning of the present invention, a product as defined in Regulation (EC) n ° 1223/2009 of the European Parliament and of the Council of November 30, 2009 relating to cosmetic products.

More particularly, the packaging and distribution assembly according to the present invention is intended for the distribution of a cosmetic product, such as, for example, an anhydrous product, in the form of powder or granules, intended to be applied, by example, on the user's epidermis.

Such a packaging and dispensing assembly for a cosmetic product can, for example, be in the form of a reservoir containing the product to be dispensed and a lid or a stopper for closing it.

Reference may be made in this respect to document EP 2 303 715 - B1 (Uexküll & Stolberg) which describes a container comprising a cap comprising a lower part mounted at the open end of a bottle and an upper part mounted for rotation on said lower part. The lower part has a delivery opening and the upper part has a distribution opening. The lower part is movable relative to the lower part between a closed position in which the routing and distribution openings are not aligned and an open position in which the routing and distribution openings are aligned in order to allow the outflow of the product contained in the tank.

However, such a container does not allow the dosing of the product.

In order to allow the metering of the product contained in the reservoir before its distribution, it is known to use a metering chamber.

In this regard, reference may be made to document US Pat. No. 4,961,521 - B (Ronald) which describes a dispensing system comprising a container containing a product and provided with a passage, a cap rotatably mounted on the container between a closed position of the passage of the container and an open position of said passage. The system further includes a cylindrical and telescopic metering chamber inside which the cap is mounted and making it possible to dose the quantity of product to be delivered. The metering chamber comprises a first cover provided with openings for the passage of the product contained in said chamber and a second cover for the distribution of the product to the outside.

However, it is necessary to use two hands in order to move the cap between the closed position and the open position. When the cap is in the open position, the product contained in the container flows outwards, even when the user releases the system, for example at the end of use, or when the system drops .

There is thus a need to perfect the packaging and distribution assemblies of a cosmetic product in order to improve their ergonomics and to allow their manipulation with one hand, while making it possible to ensure the tightness of such assemblies, in particular when 'they are no longer used by the user.

The subject of the invention is a set for packaging and distributing a product, in particular a cosmetic product, comprising a main reservoir delimiting at least one internal volume containing said product and a closing part intended to seal said internal volume and comprising at least a passage opening towards said internal volume. Said assembly further comprises a capsule delimiting a metering chamber and comprising at least one dispensing orifice associated with the passage orifice for the flow of the product contained in the main reservoir towards said metering chamber. Said capsule is rotatably mounted on said closure part between a first closed position in which the passage orifice and the dispensing orifice are offset so as to prevent the passage of the product from the internal volume to the metering chamber and a second open position in which the passage orifice and the dispensing orifice are superimposed so as to allow the passage of the product from the internal volume to the metering chamber.

The assembly comprises at least one elastically deformable return member located between the closing part and the capsule and configured to automatically move said capsule in the first closed position when the latter is no longer constrained in the second open position .

By "return member" means any elastic member capable of deforming and intended to exert a force by tending to return to its original shape after being folded, stretched, compressed or twisted.

In other words, after use, when the user releases the capsule, it automatically returns to its initial closed position in order to ensure the seal between the reservoir and said capsule.

Thanks to the dosing chamber integrated in the closure capsule, the packaging and product distribution unit is compact and can be used with one hand.

In addition, when the closure capsule is no longer constrained by the user in the open position, it automatically returns to its initial closed position in order to ensure the seal between the reservoir and said capsule.

For example, the closing part comprises a mounting skirt, for example of generally cylindrical shape, extending radially around an open end part of the main reservoir, and a front end face, for example substantially planar, in which the passage opening is made.

Said end end face is, for example, intended to come into axial abutment against the end part during mounting on the main tank.

Advantageously, the closure capsule comprises a body, for example substantially cylindrical, a distribution wall in which the distribution orifice is formed, and an annular rim extending axially from the distribution wall towards the outside and delimiting with said distribution wall the metering chamber.

The closure capsule may include a cover hinged relative to the body of said capsule about a transverse pivot axis between a position of access to the metering chamber, allowing the circulation of the product contained in the metering chamber towards the outside and a closed position of the metering chamber, preventing the circulation of the product contained in the metering chamber to the outside.

The cover has, for example, a substantially flat surface so as to be able to place the packaging and product distribution assembly on this surface.

For example, the closure capsule comprises an open lower end intended to be mounted radially around the mounting skirt of the closure part, for example by snap-fastening, screwing or fitting.

According to one embodiment, the closure part and the return member are produced in a single piece, for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having analogous physical properties.

The closing part can be separate from the main tank and fixed to said tank by snap-fastening, screwing or fitting, or any other means. One could also provide that the closing part and the main reservoir form a single piece, for example by molding a synthetic material.

Advantageously, the return member comprises at least one elastically deformable fin associated with the passage orifice and a stud for fixing the fin disposed substantially in the center of the closure part, and in particular of its front end face, said fin extending radially outward from said fixing stud.

For example, the fin comprises an end fixed to the fixing stud and a free end connected to the end by a radial part of substantially concave shape.

The capsule may include a retaining stud in circumferential contact with the free end of the associated fin of the return member, so that when the capsule is moved into the open position, the retaining stud exerts a force on said free end.

When the user rotates the capsule in the open position to align the passage and distribution orifices, the retaining stud constrains the free end of the fin. The passage and distribution orifices are then superimposed, allowing the product to pass from the internal volume of the main tank to the dosing chamber, when the user positions the assembly downwards.

As soon as the user releases the capsule, that is to say that the capsule is no longer constrained in the open position, the latter returns to the closed position in which the fin is no longer constrained by the retaining stud.

The user then opens the capsule cover to allow the product contained in the dosing chamber to flow outwards.

The retaining stud is, for example, projecting axially from the lower surface of the dispensing part.

For example, the retaining stud has an oblong shape.

According to another embodiment, the return member comprises a first end fixed to the closure part and a second end fixed to the capsule.

Advantageously, the closing part comprises, for example on its front end face, an annular groove or groove intended to receive the return member, said first end of said return member being fixed in said groove. Alternatively, provision could be made for the annular groove to be made on the annular skirt of the closure part.

For example, the return member does not extend over the entire circumference of the groove and leaves an unoccupied space of the groove in the closed position.

When the user rotates the capsule in the open position to align the passage and distribution orifices, the return member advances into the unoccupied space of the groove and is thus in a preloaded position. The passage and distribution orifices are then superimposed, allowing the product to pass from the internal volume to the metering chamber, when the user positions the assembly downwards.

As soon as the user releases the capsule, it returns to its first closed position in which the return member returns to its shape and its initial position.

The user then opens the capsule cover to allow the product contained in the dosing chamber to flow outwards.

The return member can be a spring, for example made of metallic material.

Advantageously, the closure capsule comprises, for example in its center, an attachment stud projecting axially, for example from the lower surface of the dispensing portion towards the closure portion, said attachment stud being inserted into a corresponding hole made in the closing part, for example in its front end face, and cooperating with a fastening system configured to fix the capsule on said closing part. As a variant, any other means of removable fixing of the capsule could be provided on the closure part, for example by clipping or fitting.

According to another embodiment, the main reservoir delimits at least two internal volumes each containing a separate product, the closing part comprising at least a first passage opening associated with the first internal volume and at least a second passage opening associated with the second internal volume, and the capsule comprising at least a first distribution orifice associated with the first passage orifice and at least a second distribution orifice associated with the second passage orifice, said assembly comprising two return members configured to allow, by rotation of the capsule in a first direction of rotation, the superposition of the first passage and distribution orifices for the passage of the product contained in the first internal volume towards the dosing chamber of the capsule and, by rotation of the capsule in a second direction of rotation, opposite to the first direction of rotation, the superposition of the second passage openings and dispensing for the passage of the product contained in the second internal volume to the dosing chamber of the capsule.

For example, the main tank comprises a body of generally conical or cylindrical shape.

The closing part, and in particular its front end face, may comprise a plurality of passage orifices, for example equal to one, two, three, four or more than four and the capsule, and in particular its distribution wall, may include a plurality of dispensing orifices, for example equal to one, two, three, four or greater than four. The number of dispensing orifices is equal to the number of passage orifices.

According to one embodiment, the closure part comprises three passage orifices, each passage orifice forming with an adjacent passage orifice an angle of 120 ° and the capsule comprises three distribution orifices, each distribution orifice forming with a orifice of adjacent distribution at an angle of 120 °. In the closed position, each dispensing orifice forms with an associated passage orifice, of 60 °.

According to another embodiment, the closure part comprises four passage orifices, each passage orifice forming with an adjacent passage orifice an angle of 90 ° and the capsule comprises four dispensing orifices, each distribution orifice forming with an orifice distribution board at an angle of 90 °. In the closed position, each dispensing orifice forms with an associated passage orifice, of 45 °.

Each passage opening is, for example, oblong, parallelepipedic or circular.

Each dispensing orifice is, for example, oblong, parallelepipedic or circular. The shape of the dispensing orifice may be different from the shape of the passage orifice.

The closure cap is, for example, made in one piece for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having similar physical properties.

For example, the main tank can be transparent. The main tank can also include graduations to evaluate the remaining level of product contained in the internal volume.

The main tank can be a refillable insert which can be replaced when the product contained in said insert has been used.

The dosing chamber includes, for example, graduations for reliably dosing the quantity of product to be dispensed.

Other objects, characteristics and advantages of the invention will appear on reading the following description, given only by way of nonlimiting example, and made with reference to the appended drawings, in which:

- Figure 1 shows a front view of a packaging and product distribution assembly according to a first embodiment of the invention;

- Figure 2 is a perspective view of the assembly of Figure 1;

- Figure 3 is a top view of the assembly of Figure 1 with the capsule;

- Figure 4 is a top view of the assembly of Figure 1 without the capsule cover in the open position;

- Figure 5 is a bottom view of the capsule of the assembly of Figure 1;

- Figure 6 shows a front view of a packaging and product distribution assembly according to a second embodiment of the invention;

- Figure 7 is a perspective view of the assembly of Figure 6

- Figures 8 and 9 show a top view of the assembly of Figure 6 with the capsule cover in the open position; respectively in a first position and in a second position.

An assembly 10 for packaging and dispensing a product on a dispensing surface (not shown) is illustrated in FIGS. 1 to 5 and comprises a main tank or container 20, a closing part 30 of the main tank 20 fixed on said reservoir 20 and an upper reservoir or capsule 40 fixed to said closure part 30.

By "product" is meant a cosmetic product, such as, for example, an anhydride product, in the form of powder or granules, intended to be applied, for example, to the epidermis of the user. Other types of products could also be provided, such as for example food products of the spice type, or even products of the insect repellant or insecticide type, for example for the treatment of animals.

The main tank 20 comprises a body of generally conical shape and extending along an axis Xl-Xl ’assumed to be vertical in the figures. Any other shape could be provided for the body, for example cylindrical. The body of the main tank 20 comprises an internal volume 21 for receiving the product delimited by a substantially rounded bottom 22 and a side wall 23. The main tank 20 also comprises an open end portion 24 allowing access to the internal volume 21 and connected to said side wall 23 by a shoulder 25 on which is intended to bear the closing part 30 once mounted on the main tank 20.

To this end, the end portion 24 may have, on its periphery, a snap rib 25a intended to cooperate with a corresponding snap groove 30a made in the closing part 30 for the clipping of said closing part on the main tank 20. As a variant, provision could be made for the closing part 30 to be removably fixed to the main tank 20 by any other means, for example by screwing or fitting or any other means.

One could also provide that the main tank 20 and the closing part 30 are made in a single piece, for example by molding a synthetic material. However, in order to facilitate filling of the internal volume of the main tank 20, it is preferable to provide a closing part 30 separate from said main tank 20.

As illustrated in FIGS. 1 to 5, the closing part 30 comprises a mounting skirt 31, of generally cylindrical shape, extending radially around the open end part 24 of the main tank 20, and a front face end 32 substantially flat and intended to come into axial abutment against the end of the end part 24 during mounting on the main tank 20.

The front end face 32 comprises a plurality of passage orifices 33 allowing the product contained in the main reservoir to pass to the capsule 40. As illustrated, the passage orifices 33 are four in number and are arranged at 90 ° from each other. Provision could be made for the number of passage openings 33 to be different from four, for example equal to one, two or three, or greater than four. Each of the through holes 33 is oblong in shape. As a variant, any other shape could be provided for the passage orifices, for example parallelepiped or circular.

As illustrated in detail in FIGS. 3 and 4, the end end face 32 comprises a return member 34 comprising a plurality of fins 35 each associated with a passage orifice 33 and a stud or hub 36 for fixing the fins 35 disposed at the center of the end end face 32. Each of the fins 35 comprises an end 35a fixed to the fixing stud 36 and a free end 35b connected to the end 35a by a radial part 35c of substantially concave shape.

The closing part 30 is produced in a single piece, for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having similar physical properties. The particular shape of each fin 35 of the return member 34 allows the fins to be given elastic properties. The operation of the return member 34 will be described later.

As illustrated, the capsule 40 comprises a substantially cylindrical body or skirt 41, extending along the axis XX-XX ', and comprising an open lower end 42 intended to come to be mounted radially around the mounting skirt 31 of the closing part 40 by snap-fastening and an upper end 43, opposite the lower end 42.

The body 41 also comprises an upper distribution wall 44, closing the upper end 43 and an annular flange 45 disposed on the periphery of said distribution wall 44 and extending axially outward from said distribution wall. Said distribution wall 44 defines with said annular rim 45 a metering chamber 46.

The distribution wall 44 includes a plurality of distribution orifices 47 allowing the passage of the product contained in the main reservoir 20 towards the metering chamber of the capsule 40. As illustrated, the distribution orifices 47 are four in number and are arranged 90 ° from each other. In the closed position, the passage orifices 33 form an angle of 45 ° with the distribution orifices 47.

Provision could be made for the number of dispensing orifices 47 to be different from four, for example equal to one, two or three, or greater than four. The number of distribution orifices 47 is equal to the number of passage orifices 33. Each of the distribution orifices 47 is of oblong shape. Alternatively, one could provide any other shape for the dispensing orifices, for example parallelepiped or circular.

As illustrated in detail in FIGS. 5, the capsule 40 includes retaining studs 48 projecting axially from the lower surface of the dispensing part 44.

Each of the retaining studs 48 is of oblong shape. As a variant, any other shape could be provided for the retaining studs, for example parallelepipedic or circular.

Each retaining stud 48 is in circumferential contact with the free end 35b of the corresponding fin 35.

The capsule 40 also comprises a cover 49 articulated relative to the body 41 by means of two fastening tabs 49a forming articulations or hinges around a transverse pivot axis, perpendicular to the axis XX-XX ', between a position access to the metering chamber, visible in FIG. 3, allowing the circulation of the product contained in the metering chamber 46 towards the outside and a closed position of the metering chamber 46 visible in FIG. 1, preventing the circulation of the product contained in the metering chamber 46 towards the outside. Each hinge 49a is produced in the form of a strip whose thickness is reduced at the pivot axis in order to give the hinges bending properties. In no way limiting, the cover has a substantially flat surface so as to be able to place the packaging and product distribution assembly on this surface. Such a cover will not be described further.

The capsule 40 is produced in a single piece, for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having similar physical properties.

The capsule 40 is movable in rotation relative to the closure part 30 between a first closed position, visible in FIG. 3, in which the passage orifices 33 and the distribution orifices 47 are offset preventing the passage of the product from the volume internal 21 towards the metering chamber 46 and a second open position in which the passage orifices 33 and the dispensing orifices 47 are superimposed allowing the product to pass from the internal volume 21 to the metering chamber 46.

When the user rotates the capsule 40 according to the arrow F1, visible in FIG. 3, the retaining studs 48 constrain the fins 35 by their free end 35b. The passage orifices 33 and the distribution orifices 44 are then superimposed, allowing the product to pass from the internal volume 21 to the metering chamber 46, when the user positions the assembly 10 downwards.

As soon as the user releases the capsule 40, that is to say that the capsule is no longer constrained in the open position, the latter returns to its first position, called the closed or rest position, in which the fins 35 are no longer constrained by the retaining studs 48.

The user then opens the cover 49 of the capsule 40 in order to allow the product contained in the metering chamber 46 to flow outwards.

An assembly 50 for packaging and distributing a product on a distribution surface (not shown) is illustrated in FIGS. 6 to 9 and comprises a main tank or container 60, a closing part 70 of the main tank 60 fixed to said reservoir 60 and an upper reservoir or capsule 80 fixed to said closure part 70.

By "product" is meant a cosmetic product, such as, for example, an anhydride product, in the form of powder or granules, intended to be applied, for example, to the epidermis of the user. Other types of products could also be provided, such as for example food products of the spice type, or even products of the insect repellant or insecticide type, for example for the treatment of animals.

The main reservoir 60 comprises a body of generally cylindrical shape and extending along an axis X2-X2 ’assumed to be vertical in the figures. One could provide any other shape for the body, for example conical. The body of the main tank 60 comprises an internal volume 61 for receiving the product delimited by a substantially flat bottom 62 and an open end portion 63 allowing access to the internal volume 61.

The end part 63 may have, on its periphery, a thread intended to cooperate with a corresponding tapping made in the closing part 70 for the screwing of said closing part on the main tank 60. As a variant, provision could be made for the closing part 70 is removably attached to the main tank 60 by any other means, for example by snap-fastening or fitting or any other means.

One could also provide that the main tank 60 and the closing part 70 are made in a single piece, for example by molding a synthetic material. However, in order to facilitate filling of the internal volume of the main tank 60, it is preferable to provide a closing part 70 separate from said main tank 60.

As illustrated in FIGS. 6 to 9, the closing part 70 comprises a mounting skirt 71, of generally cylindrical shape and extending radially around the open end part 63 of the main tank 60, and a front face end 72 substantially flat and intended to come into axial abutment against the end of the end portion 63 during mounting on the main tank 60.

The front end face 72 comprises a plurality of passage orifices 73 allowing the passage of the product contained in the main reservoir towards the capsule 80. As illustrated, the passage orifices 73 are three in number arranged at 120 ° one another. Provision could be made for the number of passage openings 73 to be other than three, for example equal to one or two, or greater than three. Each of the passage orifices 73 is of oblong shape. As a variant, any other shape could be provided for the passage orifices, for example parallelepiped or circular.

As illustrated in detail in FIG. 7, the front end face 72 comprises an annular groove or groove 74 intended to receive a return member 75. As illustrated, the return member 75 is a spring comprising a first end 75a fixed in said groove 74 and a second end 75b fixed on the capsule 80.

The spring 75 does not extend over the entire circumference of the groove 74 and leaves an empty space E of the groove 74 in the rest position, visible in FIG. 8. The operation of the return member 75 will be described later.

The closure part 70 is made in one piece, for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having similar physical properties.

As illustrated in FIGS. 6 to 9, the capsule 80 comprises a substantially cylindrical body, extending along the axis X2-X2 ', and comprising a lower distribution wall 81 intended to come to bear on the front face d end 72 of the closing part 70.

The body also includes an annular rim 82 extending axially from the distribution wall 81 towards the outside. The annular rim 82 forms with said distribution wall 81 a metering chamber 83.

The distribution wall 81 includes a plurality of distribution orifices 84 allowing the passage of the product contained in the main tank 60 towards the metering chamber of the capsule 80. As illustrated, the distribution orifices 84 are three in number and arranged at 120 ° relative to each other. In the closed position, the passage orifices 73 form an angle of 45 ° with the distribution orifices 84.

Provision could be made for the number of dispensing orifices 84 to be other than three, for example equal to one or two, or greater than three. The number of dispensing orifices 84 is equal to the number of passage orifices 73. Each of the dispensing orifices 84 is of oblong shape. Alternatively, one could provide any other shape for the dispensing orifices, for example parallelepiped or circular.

As illustrated in detail in FIGS. 7 to 9, the capsule 80 comprises at its center a fixing stud 85 projecting axially from the lower surface of the dispensing part 81 towards the closing part 70.

The fixing stud 85 is inserted into a corresponding hole 76 made in the end end face 72 and a screw (not shown) screwed into said fixing stud associated with a washer (not shown) or any mechanical part provided with 'a hole for the passage of the screw and intended to come to bear on the lower surface of the front end face allows to fix the capsule 80 on the closure part 70. Alternatively, one could provide any other means of fixing removable from the capsule 80 on the closing part 70, for example by clipping or fitting.

The capsule 80 further comprises a cover 86 articulated relative to the body of the capsule by means of two fastening tabs 86a forming articulations or hinges around a transverse pivot axis, perpendicular to the axis X2-X2 ', between a position for accessing the metering chamber, visible in FIG. 8, allowing the product contained in the metering chamber 83 to flow outwards and a closed position for the metering chamber visible in FIG. 6, preventing the circulation of the product contained in the metering chamber 83 to the outside. Each hinge 86a is produced in the form of a strip whose thickness is reduced at the pivot axis in order to give the hinges bending properties. In no way limiting, the cover has a substantially flat surface so as to be able to place the packaging and product distribution assembly on this surface. Such a cover will not be described further.

The capsule 80 is produced in a single piece, for example by injection molding of a plastic material, for example a polymer, such as polypropylene or any other polymer composition having similar physical properties.

The capsule 80 is movable in rotation relative to the closing part 70 between a first closed position, visible in FIG. 8, in which the passage orifices 73 and the distribution orifices 84 are offset preventing the passage of the product from the volume. internal 61 towards the metering chamber 83 and a second open position, visible in FIG. 9, in which the passage orifices 73 and the distribution orifices 84 are superimposed allowing the product to pass from the internal volume 61 to the dosage 83.

When the user rotates the capsule 80 according to arrow F2, visible in FIG. 8, the spring 75 advances in the groove 74 and is thus in a pre-stressed position. The passage openings 73 and the distribution openings 84 are then superimposed, as visible in FIG. 9, allowing the product to pass from the internal volume 61 to the metering chamber 83, when the user positions the assembly 50 towards the bottom.

As soon as the user releases the capsule 80, it returns to the closed, so-called resting position, in which the spring 75 returns to its shape and its initial position.

The user then opens the cover 86 of the capsule 80 in order to allow the product contained in the metering chamber 83 to flow outwards.

In each of the embodiments, provision could be made for the main tank to define a plurality of internal volumes, for example equal to two, each containing a separate product. In this case, at least a first passage orifice and at least a first distribution orifice would be associated with the first internal volume and at least a second passage orifice and at least a second distribution orifice would be associated with the second internal volume.

One could also provide two return members configured to allow, by rotation of the capsule in a first direction of rotation, the superposition of the first passage and distribution orifices for the passage of the product contained in the first internal volume to the chamber. dosing of the capsule and, by rotation of the capsule in a second direction of rotation, opposite to the first direction of rotation, the superposition of the second passage and distribution orifices for the passage of the product contained in the second internal volume towards the capsule dosing chamber.

Thanks to the packaging and distribution assembly according to the invention, handling with one hand is facilitated.

In addition, the return member makes it possible to obtain a tight and reliable closure of the orifices for passage to the metering chamber. This avoids any leakage of the product to the metering chamber.

Claims (14)

1. Assembly (10, 50) for packaging and distributing a product, in particular a cosmetic product, comprising a main reservoir (20, 60) delimiting at least one internal volume (21, 61) containing said product and a closing part ( 30, 70) intended to close off said internal volume and comprising at least one passage orifice (33, 73) towards said internal volume, said assembly further comprising a capsule (40, 80) delimiting a metering chamber (46, 83 ) and comprising at least one dispensing orifice (47, 84) associated with the passage orifice for the flow of the product contained in the main reservoir (20, 60) towards said metering chamber (46, 83), said capsule (40, 80) being rotatably mounted on said closing part (30, 70) between a first closing position in which the passage orifice (33, 73) and the dispensing orifice (47, 84) are offset so as to prevent the passage of the product from the internal volume (21, 61) ve rs the metering chamber (46, 83) and a second open position in which the passage orifice (33, 73) and the dispensing orifice (47, 84) overlap so as to allow the passage of the product from the internal volume (21, 61) to the metering chamber (46, 83), characterized in that it comprises at least one resiliently deformable return member (34, 75) situated between the closing part (30, 70) and the capsule (40, 80) and configured to automatically move said capsule (40, 80) in the first closed position when the latter is no longer constrained in the second open position. 2. The assembly of claim 1, wherein the closure portion (30, 70) comprises a mounting skirt (31, 71) extending radially around an open end portion (24, 63) of the main tank (20, 60), and an end end face (32, 72) in which the passage orifice (33, 73) is made. 3. Assembly according to any one of the preceding claims, in which the closure capsule (40, 80) comprises a body (41), a distribution wall (44, 81) in which the distribution orifice (47) is formed. , 84), and an annular rim (45, 82) extending axially from the distribution wall (44, 81) outward and delimiting with said distribution wall (44, 81) the metering chamber ( 46, 83). 4. Assembly according to any one of the preceding claims, in which the closure capsule (40, 80) further comprises a cover (49, 86) articulated relative to the body of said capsule between a position of access to the chamber. metering (46, 83), and a closed position of the metering chamber (46, 83). 5. Assembly according to any one of the preceding claims, in which the closure part (30) and the return member (34) are produced in a single piece, for example by injection molding of a plastic material. 6. The assembly of claim 5, wherein the return member (34) comprises at least one fin (35) elastically deformable associated with the passage opening (33) and a stud (36) for fixing the fin (35) disposed substantially in the center of the closure part (30), said fin (35) extending radially outward from said fixing stud (36). 7. The assembly of claim 6, wherein the fin (35) comprises an end (35a) fixed to the fixing stud (36) and a free end (35b) connected to the end (35a) by a radial part ( 35c) of substantially concave shape. 8. The assembly of claim 7, wherein the capsule comprises a retaining stud (48) in circumferential contact with the free end (35b) of the fin (35) associated with the return member (34), so that the capsule (40) is placed in the open position, the retaining stud (48) exerts a force on said free end (35b). 9. An assembly according to any one of claims 1 to 4, in which the return member (75) comprises a first end (75a) fixed to the closure part (70) and a second end (75b) fixed to the capsule (80). 10. The assembly of claim 9, wherein the closure portion (70) comprises an annular groove (74) intended to receive the return member (75), said first end (75a) of said return member (75) being fixed in said groove. 11. The assembly of claim 10, wherein the return member (75) does not extend over the entire circumference of the groove (74) and leaves in the closed position a space (E) unoccupied of the groove ( 74). 12. Assembly according to any one of claims 9 to 11, in which the return member (75) is a spring. 13. An assembly according to any one of claims 9 to 12, in which the closure capsule (80) comprises a fixing stud (85) projecting axially towards the closing part (70), said fixing stud (85). from being inserted into a corresponding hole (76) made in the closing part (70), and cooperating with a fastening system configured to fix the capsule (80) on said closing part (70). 14. Assembly according to any one of the preceding claims, in which the main reservoir delimits at least two internal volumes each containing a separate product, the closing part comprising at least a first passage orifice associated with the first internal volume and at least one second passage opening associated with the second internal volume, and the capsule comprising at least a first distribution opening associated with the first passage opening and at least one second distribution opening associated with the second passage opening, said assembly comprising two configured return members to allow, by rotation of the capsule in a first direction of rotation, the superposition of the first passage and distribution orifices for the passage of the product contained in the first internal volume towards the dosing chamber of the capsule and, by rotation of the capsule in a second direction of rotation, opposite to the first direction of rotation, the su perposition of the second passage and distribution orifices for the passage of the product contained in the second internal volume towards the dosing chamber of the capsule.