EP3468893B1 - Device for dispensing a fluid product - Google Patents

Device for dispensing a fluid product Download PDF

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Publication number
EP3468893B1
EP3468893B1 EP17732526.3A EP17732526A EP3468893B1 EP 3468893 B1 EP3468893 B1 EP 3468893B1 EP 17732526 A EP17732526 A EP 17732526A EP 3468893 B1 EP3468893 B1 EP 3468893B1
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EP
European Patent Office
Prior art keywords
upper wall
piston
wall
volume
dispensing device
Prior art date
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Active
Application number
EP17732526.3A
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German (de)
French (fr)
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EP3468893A1 (en
Inventor
Karine COURTIN
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Individual
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Individual
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Publication of EP3468893A1 publication Critical patent/EP3468893A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2031—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure the element being formed by a slit, narrow opening or constrictable spout, the size of the outlet passage being able to be varied by increasing or decreasing the pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0033—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container the piston being a follower-piston and the dispensing means comprising a hand-operated pressure-device at the opposite part of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0038—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container moved by a spring-like mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
    • B65D83/0061—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by the contracting forces inherent in the bag or a sleeve fitting snugly around the bag

Definitions

  • the invention relates to a fluid distribution device, which is intended to prevent the oxidation by air of the fluid contained in the device and to preserve this fluid from the development of yeasts and bacterial contamination for example.
  • the invention relates in particular to a device for dispensing a cream, a paste, a gel or a liquid for the cosmetic, chemical, pharmaceutical or food industry, which is contained in a rigid container.
  • the invention is part of an approach to reduce the number and quantity of additives which are incorporated into the products with a view to preserving and preserving the product.
  • the reduction of such additives comes from an action carried out by the health and consumer authorities.
  • Such a container is hermetically closed in air, in particular to limit the risks of product oxidation.
  • preservative compounds such as for example antioxidant, bactericidal or antifungal compounds are incorporated into the product. Such compounds participate only indirectly, or even do not participate, in the action of the basic formula of the product.
  • the container generally comprises an external withdrawal surface, onto which a dispensing orifice, connecting the interior volume of the container with the exterior, opens.
  • the product picking action is performed on this picking surface, for example according to a scanning action of a finger on it. There is then an accumulation of numerous external pollutants on the sampling surface and a risk of contamination of the rest of the product contained in the interior volume of the container.
  • the document FR-3.011.826 describes a slit shutter intended to be assembled on such a container and which prevents pollutants which may be present on the sampling face, as well as air from entering the interior volume of the container during, or at the end, a product sampling operation.
  • This shutter is capable of being mounted on a pot with rigid walls, the wall forming the bottom is movable and is capable of being moved relative to the other walls, under the action of the user.
  • This user action generates an increase in the pressure of the product in the container, which results in the opening of the slit shutter and the exit of a defined quantity of product.
  • the displacement of the movable wall makes it possible to compensate for the volume of product which has been withdrawn.
  • the user must hold the container with both hands, which is not ergonomic.
  • the movable wall of the rigid pot is the upper wall, on which the slit shutter is placed.
  • This embodiment allows the user to exert the action on the movable wall to cause the pressure increase, with the same finger which is used for the sampling of product.
  • the use of the dispensing device is improved compared to a dispensing device for which the bottom is movable.
  • the movable upper wall sinks more and more into the device, which makes the removal less and less easy.
  • this comprises a container with rigid walls and a mini dispensing pump.
  • This pump also makes it possible to prevent air from entering the interior volume of the container and it has for this purpose a movable piston which goes up at each dispensing to compensate for the volume of product withdrawn.
  • This pump consists of a large number of components of different natures. The production cost of this pump is therefore not negligible, which consequently increases the selling price of the distribution device.
  • the product extracted by this pump must be quickly withdrawn with one hand by the user, the other holding the dispensing device.
  • the use of the dispensing device is therefore not easy.
  • EP3023026A1 discloses a distribution device corresponding to the preambles of claims 1 and 4.
  • the object of the invention is to provide a fluid distribution device which is capable of being manipulated with one hand at a time to remove a quantity of product from the container and to take this quantity of product.
  • the invention provides a device for dispensing a fluid product comprising a rigid cylindrical body whose main axis of the body is oriented vertically, a rigid lower piston oriented mainly horizontally and which is movable in sliding in the vertical direction inside. of the body, and an upper sampling wall which closes off the upper end of the body, wherein the body, the lower piston and the upper wall define a volume intended to be filled with product to be dispensed; in which said upper wall includes a slit shutter which is capable of opening to allow said volume to be connected with the outside, wherein said upper wall is elastically deformable and is able to deform inwardly of said volume when a pressure is exerted manually on the upper wall, to cause an increase in pressure inside the volume and the opening of the slit shutter, characterized in that the piston carries an O-ring which is compressed radially between an internal cylindrical wall of the body and a wall of the piston, said wall of the piston comprising a conical section open towards the upper wall against which the O-ring is supported
  • Providing the dispensing device with such an upper wall allows a user, by pressing directly on the upper wall, to release a quantity of product to be dispensed. Then, the user only has to sweep the external face of the upper wall to take the quantity of product out.
  • the dispensing device comprises means for driving the piston moving towards the upper wall.
  • the drive means comprise a spring which is compressed vertically between the piston and a bottom plate fixed to the lower end of the body.
  • the invention also relates to a device for dispensing a fluid product
  • a device for dispensing a fluid product comprising a rigid cylindrical body whose main axis of the body is oriented vertically, a rigid piston oriented mainly horizontally and which is movable in sliding in the vertical direction inside. of the body, and an upper sampling wall which closes off the upper end of the body, wherein the body, the piston and the upper wall define a volume intended to be filled with product to be dispensed;
  • said upper wall includes a slit shutter which is capable of opening to allow said volume to be connected with the outside, wherein said upper wall is elastically deformable and is able to deform inwardly of said volume when pressure is exerted manually on the upper wall, to cause an increase in pressure inside the volume and cause the opening of the slit shutter.
  • said upper wall comprises a spring which is compressed vertically between the piston and a bottom plate fixed to the lower end of the body to prevent the piston from moving away from the upper wall when pressure is exerte
  • the bottom plate has a vent connecting the volume delimited by the body, the piston and the bottom plate with the outside.
  • the piston has an upper face which is opposite the lower face of the upper wall and the shape of the upper face of the piston is complementary to the shape of the lower face of the upper wall.
  • the upper wall is in the shape of a convex dome curved upwards.
  • the dispensing device comprises a removable cover which is intended to cover the upper wall and which is removably mounted on the upper end of the body.
  • the shape of the cover is complementary to the shape of the upper wall and the cover has a layer of bactericidal material which comes into contact with at least part of the upper wall when the cover is mounted on the upper end of the body. .
  • the upper end of the body has a peripheral groove which receives a complementary part of the upper wall.
  • the product consists of a cream, a paste or a gel and it is intended for cosmetic or food use.
  • the distribution device 10 comprises a rigid body 12 of cylindrical, or tubular shape, and of main vertical axis A.
  • the section of the body 12 along a horizontal plane is circular centered on the main axis A, that is to say that the body is a cylindrical element of revolution.
  • the invention is not limited to a form of revolution of the body 12 and that the invention relates to any tubular shape such as for example a tube of square, rectangular or oval section.
  • the distribution device 10 also comprises a horizontal bottom wall 14 forming a piston which is mounted to slide in movable motion relative to the body 12 along the vertical main axis A of the distribution device 10.
  • the sliding guide of the piston 14 relative to the body 12 is produced by the cooperation of the peripheral wall 16 of the piston 14 with the internal cylindrical wall 18 of the body 12.
  • the peripheral wall 16 of the piston 14 is cylindrical, or tubular, centered on the main axis of the dispensing device 10 and has the same shape as the internal cylindrical wall 18 of the body 12.
  • a clearance is present between the two facing walls 16, 18, to allow the piston 14 to slide relative to the body 12.
  • Sealing means are interposed between the peripheral wall 16 of the piston 14 and the internal cylindrical wall 18 of the body 12.
  • the sealing means consist of one or more O-rings 20, each of which is received in a peripheral groove 22 formed in the peripheral wall 16 of the piston 14 and each O-ring 20 is compressed radially, with respect to the main axis A between the peripheral wall 16 of the piston 14 and the internal cylindrical wall 18 of the body 12.
  • the distribution device 10 also includes an upper wall 24 which closes the upper end 12s of the body 12.
  • the assembly formed by the body 12, the piston 14 and the upper wall 24 defines a closed volume 26 in which the product to be dispensed is stored.
  • the upper wall 24 includes a slit shutter 28 which is capable of opening to allow the product to exit towards the outside for its removal and which is normally in a hermetically closed position in which the slit shutter 28 maintains the closed volume 26 isolated from the outside.
  • the slit shutter 28 is capable of opening when the pressure of the product to be dispensed in the closed volume 26 is greater than a predefined pressure. If the pressure is lower than this predefined pressure, the shutter 28 remains in its closed configuration.
  • the pressure in the closed volume is also greater than the external pressure, which causes the exit of a quantity of the product present in the closed volume 26, which is then deposited on the outer surface 30 of the upper wall 24.
  • the slit shutter 28 has two faces which are movable opposite which form the slit and which are able to move apart to open the slit shutter 28 or to approach until they come into contact. with each other to close the slit shutter. Also, when they come closer, they cause a flow of the product preventing any foreign compound coming from the outside from entering the closed volume 26.
  • the user then scans this external surface 30 of the upper wall 24, for example with a finger, in order to withdraw the quantity of product which rests on the external surface 30 of the upper wall 24.
  • the upper wall 24 is made of an elastically deformable material. Thus, when a user exerts pressure on the upper wall 24, the upper wall 24 deforms and transmits the pressure undergone to the fluid present in the closed volume 26. The pressure in the closed volume 26 then increases as a function of the pressure exerted by the user, until the product is released, as described above.
  • the piston 14 slides in the direction of the upper wall 24, that is to say here upwards, relative to the body 12 over a distance corresponding to the variation volume of the product.
  • the dispensing device 10 also comprises means for preventing the piston 14 from moving away from the upper wall 24, that is to say a sliding of the piston 14 downwards, when pressure is exerted on the upper wall 24.
  • the dispensing device 10 comprises a spring 32 which presses against a lower face 14i of the piston 14 and which exerts on the piston 14 a force oriented towards the upper wall 24.
  • the spring 32 generates an initial pressure of the product present in the closed volume 26. This pressure generated by the spring is less than the pressure causing the opening of the slit shutter 28.
  • the spring 32 here consists of a helical spring which is compressed vertically between the piston 14 and a bottom bottom plate 34 which closes the bottom end 12i of the body 12.
  • This bottom plate 34 further forms a base for the dispensing device 10, by which the dispensing device 10 can be placed on a support.
  • Each of the piston 14 and the bottom plate 34 have a cylindrical barrel 36, 38 in which one end of the spring 32 is received. These barrels 36, 38 make it possible to guide the spring 32 in order to maintain it in its vertical orientation and avoid any buckling of the latter.
  • the means for preventing the piston 14 from moving away from the upper wall 24 when pressure is exerted on the upper wall 24 are formed by the O-ring 20 which is capable of being wedged between the internal cylindrical wall 18 of the body 12 and a bottom wall 66 of the peripheral groove 22 receiving the seal.
  • the bottom wall 66 has a cylindrical lower section 68 and an upper section 70 extending the lower section 68 towards the upper wall 24 and which is conical in shape.
  • the upper section 70 is in the form of a cone open towards the upper wall 24, that is to say that its diameter increases as one approaches the upper wall 24.
  • the diameter of the lower section 68 is slightly greater than the internal diameter of the O-ring 20, the diameter of the upper section 70 is therefore also greater than the internal diameter of the O-ring 20 at any point. This allows the O-ring 20 to be compressed radially between the internal cylindrical wall 18 of the body 12 and the bottom wall 66.
  • the radial compression of the O-ring 20 is substantially constant.
  • the radial compression of the O-ring 20 increases as the position of the O-ring 20 in the groove 22 is located at the level of the upper section 70 and approaches the upper wall 24.
  • the piston 14 is then blocked in sliding towards the bottom plate 34.
  • the piston 14 can then move towards the upper wall 24, either by the suction effect when the upper wall 24 returns to its initial shape or by the action of the spring 32.
  • the invention is not limited to these means and that the dispensing device may include other non-return means, which prevent the piston 14 from moving downwards away from the upper wall. 24 and which allow the piston 14 to slide towards the upper wall 24, that is to say upwards, relative to the body 12.
  • non-return means can also be combined with the drive means which come from 'be described above.
  • the bottom plate 34 also includes a vent 40 connecting the volume 42 delimited by the body 12, the piston 14 and the bottom plate 34, with the surrounding air, to avoid any depression in this volume 42, which would result from the displacement of the piston 14 upwards and which would hinder this movement of piston 14.
  • the shape of the upper wall 24 is defined to facilitate the removal of the product by the user.
  • the upper wall 24 is in the form of a hemispherical dome curved upwards. It will be understood that the invention is not limited to this hemispherical shape and that the upper wall 24 can be planar or else have any other convex shape curved upwards.
  • the material constituting the upper wall 24 is preferably a material chosen, for example, from rubber, an elastomer or a silicone.
  • the thickness of the upper wall 24 is defined as a function of the force that the user must apply to the upper face 30 in order to cause the deformation of the upper wall 24 and the opening of the slit shutter 28.
  • the upper wall 24 is further produced in one piece by molding on the body 12 in order to ensure good fixing of these two elements together as well as good sealing between them.
  • the upper end 12s of the body 12 has a peripheral groove 44 in which a complementary part 46 of the upper wall 24 is received.
  • the upper end 12s of the body 12 has an extra thickness allowing the formation of this groove 44.
  • Obtaining the slit shutter 28 consists for example of making an incision in the upper wall 24 after the molding operation.
  • a slit with inclined walls 48 extends the incision downward, to facilitate the spacing of the faces of the slit shutter 28 under the action of the pressure of the product.
  • the piston 14 has an upper face which is opposite the lower face 50 of the upper wall 24.
  • the shape of the upper face of the piston 14 is complementary to the shape of the lower face 50 of the upper wall 24
  • the closed volume 26 is substantially zero. This means that there is substantially no longer any product inside the dispensing device 10.
  • the upper wall 24, and consequently its lower face 50 is in the form of a dome.
  • the piston 14 has for this purpose an upper dome 52 complementary to the lower face 50 of the upper wall 24.
  • the dome 52 has a tip 54 which is complementary to the slot 48 with inclined walls, so that a minimum of product remains in the dispensing device 10.
  • the dome 52 consists of a metal sheet which has been stamped and which is fixed to the rest of the piston by any known means, for example by gluing. According to another exemplary embodiment, the dome 52 is made of plastic.
  • the dome 52 consists of a solid block, for example made from the same elastic material as the upper wall 24, which is fixed to the rest of the piston 14 by any known means, for example here, by means of a shoulder 62.
  • the piston 14 is entirely in the shape of the dome 52 complementary to the lower face 50 of the upper wall 24.
  • the dispensing device 10 also includes a cover 56 which is intended to cover the upper wall 24.
  • the cover 56 is in the form of a dome complementary to the shape of the upper face 30 of the upper wall 24. The cover 56 thus protects the upper wall 24 of any unwanted action which could cause the exit of a quantity of product and reinforces the sealing of the closure of the closed volume 26.
  • the cover 56 is removably mounted on the upper end 12s of the body 12 by clipping or by screwing.
  • the peripheral edge of the cover 56 includes shapes 58 which are intended to cooperate with complementary shapes 60 of the upper end 12s of the body 12.
  • the cover 56 comprises a layer 64 of a material having a bactericidal or bacteriostatic effect, such as for example copper or silver, which releases ions having a sanitizing effect.
  • This layer 64 comes into contact with the upper wall 24 when the cover 56 is mounted on the body 12, thus effecting a sanitizing action on the upper wall 24.
  • the extent of the layer 64 is preferably defined to come into contact with the entire upper wall 24. However, it will be understood that the layer 64 may be of smaller dimensions so as to come into contact only with a part of the upper wall 24, centered on the slit shutter 28.
  • the cover 56 does not include such a layer 64.
  • the method of taking the product contained in this dispensing device 10 makes it possible to take the product with the hand or the finger which exerts the action on the upper wall 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Nozzles (AREA)

Description

DOMAINE TECHNIQUETECHNICAL AREA

L'invention concerne un dispositif de distribution de fluide, qui est destiné à empêcher l'oxydation par l'air du fluide contenu dans le dispositif et à préserver ce fluide du développement de levures et de contaminations bactériennes par exemple.The invention relates to a fluid distribution device, which is intended to prevent the oxidation by air of the fluid contained in the device and to preserve this fluid from the development of yeasts and bacterial contamination for example.

L'invention concerne notamment un dispositif de distribution d'une crème, d'une pâte, d'un gel ou d'un liquide pour l'industrie cosmétique, chimique, pharmaceutique ou alimentaire, qui est contenu dans un récipient rigide.The invention relates in particular to a device for dispensing a cream, a paste, a gel or a liquid for the cosmetic, chemical, pharmaceutical or food industry, which is contained in a rigid container.

L'invention s'inscrit dans une démarche de réduction du nombre et de la quantité d'additifs qui sont incorporés aux produits en vue de la conservation et la préservation du produit. La réduction de tels additifs provient d'une action menée par les autorités de santé et de consommateurs.The invention is part of an approach to reduce the number and quantity of additives which are incorporated into the products with a view to preserving and preserving the product. The reduction of such additives comes from an action carried out by the health and consumer authorities.

ÉTAT DE LA TECHNIQUE ANTÉRIEUREPRIOR STATE OF THE ART

De nombreux produits se présentant sous la forme pâteuse ou liquide sont contenus dans des récipients qui réalisent à la fois la protection et la distribution de ces produits.Many products in paste or liquid form are contained in containers which provide both protection and distribution of these products.

Un tel récipient est fermé hermétiquement à l'air, notamment pour limiter les risques d'oxydation du produit.Such a container is hermetically closed in air, in particular to limit the risks of product oxidation.

Aussi, de nombreux composés conservateurs tels que par exemple des composés antioxydants, bactéricides ou antifongiques sont incorporés au produit. De tels composés ne participent qu'indirectement, voire ne participent pas, à l'action de la formule de base du produit.Also, many preservative compounds such as for example antioxidant, bactericidal or antifungal compounds are incorporated into the product. Such compounds participate only indirectly, or even do not participate, in the action of the basic formula of the product.

Il existe aussi des risques de pollution du produit qui surviennent lors de la distribution du produit à l'aide du récipient.There are also risks of product pollution that arise during the distribution of the product using the container.

Le récipient comprend généralement une surface externe de prélèvement, sur laquelle un orifice de distribution, reliant le volume intérieur du récipient avec l'extérieur, débouche.The container generally comprises an external withdrawal surface, onto which a dispensing orifice, connecting the interior volume of the container with the exterior, opens.

L'action de prélèvement du produit s'effectue sur cette surface de prélèvement, par exemple selon une action de balayage d'un doigt sur celle-ci. Il y a alors une accumulation de nombreux polluants externes sur la surface de prélèvement et un risque de contamination du reste du produit contenu dans le volume intérieur du récipient.The product picking action is performed on this picking surface, for example according to a scanning action of a finger on it. There is then an accumulation of numerous external pollutants on the sampling surface and a risk of contamination of the rest of the product contained in the interior volume of the container.

Ce risque de contamination réel dans le cas de tubes pour lesquels l'orifice de distribution est continuellement ouvert est majeur pour les pots ayant une grande surface d'ouverture.This real risk of contamination in the case of tubes for which the dispensing orifice is continuously open is major for pots having a large opening surface.

Le document FR-3.011.826 décrit un obturateur à fente destiné à être assemblé sur un tel récipient et qui empêche aux polluants pouvant être présents sur la face de prélèvement, ainsi qu'à l'air de pénétrer dans le volume intérieur du récipient pendant, ou à l'issue, d'une opération de prélèvement de produit.The document FR-3.011.826 describes a slit shutter intended to be assembled on such a container and which prevents pollutants which may be present on the sampling face, as well as air from entering the interior volume of the container during, or at the end, a product sampling operation.

Cet obturateur est apte à être monté sur un pot à parois rigides, dont la paroi formant le fond est mobile et est apte à être déplacée par rapport aux autres parois, sous l'action de l'utilisateur. Cette action de l'utilisateur génère une augmentation de la pression du produit dans le récipient, qui a pour conséquence l'ouverture de l'obturateur à fente et la sortie d'une quantité définie de produit.This shutter is capable of being mounted on a pot with rigid walls, the wall forming the bottom is movable and is capable of being moved relative to the other walls, under the action of the user. This user action generates an increase in the pressure of the product in the container, which results in the opening of the slit shutter and the exit of a defined quantity of product.

Le déplacement de la paroi mobile permet de compenser le volume de produit qui a été prélevée. Cependant, pour l'utilisation de ce dispositif de distribution, l'utilisateur doit tenir le récipient avec ses deux mains, ce qui n'est pas ergonomique.The displacement of the movable wall makes it possible to compensate for the volume of product which has been withdrawn. However, for the use of this dispensing device, the user must hold the container with both hands, which is not ergonomic.

Selon un autre mode de réalisation, la paroi mobile du pot rigide est la paroi supérieure, sur laquelle l'obturateur à fente est placé.According to another embodiment, the movable wall of the rigid pot is the upper wall, on which the slit shutter is placed.

Ce mode de réalisation permet à l'utilisateur d'exercer l'action sur la paroi mobile pour provoquer l'augmentation de pression, avec le même doigt qui est utilisé pour le prélèvement de produit.This embodiment allows the user to exert the action on the movable wall to cause the pressure increase, with the same finger which is used for the sampling of product.

L'utilisation du dispositif de distribution s'en trouve améliorée par rapport à un dispositif de distribution pour lequel le fond est mobile.The use of the dispensing device is improved compared to a dispensing device for which the bottom is movable.

Cependant, au fur et à mesure du prélèvement de produit, la paroi supérieure mobile s'enfonce de plus en plus dans le dispositif, ce qui rend le prélèvement de moins en moins facile.However, as the product is removed, the movable upper wall sinks more and more into the device, which makes the removal less and less easy.

Selon un autre type de dispositif de distribution, celui-ci comporte un récipient à parois rigides ainsi qu'une mini pompe distributrice. Cette pompe permet, elle aussi, d'empêcher à l'air de pénétrer dans le volume intérieur du récipient et elle comporte à cet effet un piston mobile qui remonte à chaque distribution pour compenser le volume de produit prélevé.According to another type of dispensing device, this comprises a container with rigid walls and a mini dispensing pump. This pump also makes it possible to prevent air from entering the interior volume of the container and it has for this purpose a movable piston which goes up at each dispensing to compensate for the volume of product withdrawn.

Cette pompe est constituée d'un grand nombre de composants de natures différentes. Le coût de production de cette pompe est donc non négligeable, ce qui augmente par conséquent le prix de vente du dispositif de distribution.This pump consists of a large number of components of different natures. The production cost of this pump is therefore not negligible, which consequently increases the selling price of the distribution device.

Aussi, le produit extrait par cette pompe doit être prélevé rapidement d'une main par l'utilisateur, l'autre maintenant le dispositif de distribution. L'utilisation du dispositif de distribution n'est donc pas aisée.Also, the product extracted by this pump must be quickly withdrawn with one hand by the user, the other holding the dispensing device. The use of the dispensing device is therefore not easy.

Le document EP3023026A1 divulgue un dispositif de distribution correspondant aux préambules des revendications 1 et 4.The document EP3023026A1 discloses a distribution device corresponding to the preambles of claims 1 and 4.

L'invention a pour but de proposer un dispositif de distribution de fluide qui est apte à être manipulé avec une seule main à la fois pour faire sortir une quantité de produit hors du récipient et pour prélever cette quantité de produit.The object of the invention is to provide a fluid distribution device which is capable of being manipulated with one hand at a time to remove a quantity of product from the container and to take this quantity of product.

EXPOSÉ DE L'INVENTIONSTATEMENT OF THE INVENTION

L'invention propose un dispositif de distribution d'un produit fluide comportant un corps cylindrique rigide dont l'axe principal du corps est orienté verticalement, un piston inférieur rigide orienté principalement horizontalement et qui est mobile en coulissement selon la direction verticale à l'intérieur du corps, et une paroi supérieure de prélèvement qui obture l'extrémité supérieure du corps,
dans lequel le corps, le piston inférieur et la paroi supérieure délimitent un volume destiné à être rempli par produit à distribuer ;
dans lequel ladite paroi supérieure comporte un obturateur à fente qui est apte à s'ouvrir pour permettre de relier ledit volume avec l'extérieur,
dans lequel ladite paroi supérieure est déformable élastiquement et est apte à se déformer vers l'intérieur dudit volume lorsqu'une pression est exercée manuellement sur la paroi supérieure, pour provoquer une augmentation de pression à l'intérieur du volume et l'ouverture de l'obturateur à fente,
caractérisé en ce que le piston porte un joint torique qui est comprimé radialement entre une paroi cylindrique interne du corps et une paroi du piston, ladite paroi du piston comportant un tronçon de forme conique ouvert vers la paroi supérieure contre lequel le joint torique est en appui lorsque le piston est entrainé pour s'écarter de la paroi supérieure, pour empêcher que le piston s'écarte de la paroi supérieure lorsqu'une pression est exercée sur la paroi supérieure.The invention provides a device for dispensing a fluid product comprising a rigid cylindrical body whose main axis of the body is oriented vertically, a rigid lower piston oriented mainly horizontally and which is movable in sliding in the vertical direction inside. of the body, and an upper sampling wall which closes off the upper end of the body,
wherein the body, the lower piston and the upper wall define a volume intended to be filled with product to be dispensed;
in which said upper wall includes a slit shutter which is capable of opening to allow said volume to be connected with the outside,
wherein said upper wall is elastically deformable and is able to deform inwardly of said volume when a pressure is exerted manually on the upper wall, to cause an increase in pressure inside the volume and the opening of the slit shutter,
characterized in that the piston carries an O-ring which is compressed radially between an internal cylindrical wall of the body and a wall of the piston, said wall of the piston comprising a conical section open towards the upper wall against which the O-ring is supported when the piston is driven to move away from the upper wall, to prevent the piston from moving away from the upper wall when pressure is exerted on the upper wall.

Munir le dispositif de distribution d'une telle paroi supérieure permet à un utilisateur en pressant directement sur la paroi supérieure, de faire sortir une quantité de produit à distribuer. Ensuite, l'utilisateur n'a qu'à balayer la face externe de la paroi supérieure pour prélever la quantité de produit sortie.Providing the dispensing device with such an upper wall allows a user, by pressing directly on the upper wall, to release a quantity of product to be dispensed. Then, the user only has to sweep the external face of the upper wall to take the quantity of product out.

De préférence, le dispositif de distribution comporte des moyens d'entrainement du piston en déplacement vers la paroi supérieure.Preferably, the dispensing device comprises means for driving the piston moving towards the upper wall.

De préférence, les moyens d'entrainement comportent un ressort qui est comprimé verticalement entre le piston et une plaque de fond fixée à l'extrémité inférieure du corps.Preferably, the drive means comprise a spring which is compressed vertically between the piston and a bottom plate fixed to the lower end of the body.

L'invention concerne aussi un dispositif de distribution d'un produit fluide comportant un corps cylindrique rigide dont l'axe principal du corps est orienté verticalement, un piston rigide orienté principalement horizontalement et qui est mobile en coulissement selon la direction verticale à l'intérieur du corps, et une paroi supérieure de prélèvement qui obture l'extrémité supérieure du corps,
dans lequel le corps, le piston et la paroi supérieure délimitent un volume destiné à être rempli par produit à distribuer ;
dans lequel ladite paroi supérieure comporte un obturateur à fente qui est apte à s'ouvrir pour permettre de relier ledit volume avec l'extérieur,
dans lequel ladite paroi supérieure est déformable élastiquement et est apte à se déformer vers l'intérieur dudit volume lorsqu'une pression est exercée manuellement sur la paroi supérieure, pour provoquer une augmentation de pression à l'intérieur du volume et provoquer l'ouverture de l'obturateur à fente.
caractérisé en ce qu'il comporte un ressort qui est comprimé verticalement entre le piston et une plaque de fond fixée à l'extrémité inférieure du corps pour empêcher que le piston ne s'écarte de la paroi supérieure lorsqu'une pression est exercée sur la paroi supérieure.The invention also relates to a device for dispensing a fluid product comprising a rigid cylindrical body whose main axis of the body is oriented vertically, a rigid piston oriented mainly horizontally and which is movable in sliding in the vertical direction inside. of the body, and an upper sampling wall which closes off the upper end of the body,
wherein the body, the piston and the upper wall define a volume intended to be filled with product to be dispensed;
in which said upper wall includes a slit shutter which is capable of opening to allow said volume to be connected with the outside,
wherein said upper wall is elastically deformable and is able to deform inwardly of said volume when pressure is exerted manually on the upper wall, to cause an increase in pressure inside the volume and cause the opening of the slit shutter.
characterized in that it comprises a spring which is compressed vertically between the piston and a bottom plate fixed to the lower end of the body to prevent the piston from moving away from the upper wall when pressure is exerted on the upper wall.

De préférence, la plaque de fond comporte un évent reliant le volume délimité par le corps, le piston et la plaque de fond avec l'extérieur.Preferably, the bottom plate has a vent connecting the volume delimited by the body, the piston and the bottom plate with the outside.

De préférence, le piston comporte une face supérieure qui est en vis-à-vis de la face inférieure de la paroi supérieure et la forme de la face supérieure du piston est complémentaire de la forme de la face inférieure de la paroi supérieure.Preferably, the piston has an upper face which is opposite the lower face of the upper wall and the shape of the upper face of the piston is complementary to the shape of the lower face of the upper wall.

De préférence, la paroi supérieure est en forme de dôme convexe bombé vers le haut.Preferably, the upper wall is in the shape of a convex dome curved upwards.

De préférence, le dispositif de distribution comporte un couvercle amovible qui est destiné à recouvrir la paroi supérieure et qui est monté de manière amovible sur l'extrémité supérieure du corps.Preferably, the dispensing device comprises a removable cover which is intended to cover the upper wall and which is removably mounted on the upper end of the body.

De préférence, la forme du couvercle est complémentaire de la forme de la paroi supérieure et le couvercle comporte une couche en matériau bactéricide qui vient en contact avec au moins une partie de la paroi supérieure lorsque le couvercle est monté sur l'extrémité supérieure du corps.Preferably, the shape of the cover is complementary to the shape of the upper wall and the cover has a layer of bactericidal material which comes into contact with at least part of the upper wall when the cover is mounted on the upper end of the body. .

De préférence, l'extrémité supérieure du corps comporte une rainure périphérique qui reçoit une partie complémentaire de la paroi supérieure.Preferably, the upper end of the body has a peripheral groove which receives a complementary part of the upper wall.

BRÈVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui suit pour la compréhension de laquelle on se reportera aux figures annexées parmi lesquelles :

  • la figure 1 est une représentation schématique en section selon son plan principal vertical médian d'un dispositif de distribution d'un produit fluide réalisé selon l'invention ;
  • la figure 2 est une vue similaire à celle de la figure 1, montrant une variante de réalisation de l'invention ;
  • la figure 3 est une vue similaire à celle de la figure 1, montrant une autre variante de réalisation de l'invention dans laquelle le dispositif de distribution est représenté rempli avec le produit fluide à distribuer et équipé d'un couvercle de protection ;
  • la figure 4 est un détail à plus grande échelle d'un dispositif de distribution montrant un mode de réalisation de moyens anti retour du piston.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the appended figures among which:
  • the figure 1 is a schematic representation in section along its median vertical main plane of a device for dispensing a fluid product produced according to the invention;
  • the figure 2 is a view similar to that of the figure 1 , showing an alternative embodiment of the invention;
  • the figure 3 is a view similar to that of the figure 1 , showing another alternative embodiment of the invention in which the dispensing device is shown filled with the fluid to be dispensed and equipped with a protective cover;
  • the figure 4 is a detail on a larger scale of a dispensing device showing an embodiment of anti-return means of the piston.

EXPOSÉ DÉTAILLÉ DE MODES DE RÉALISATION PARTICULIERSDETAILED PRESENTATION OF PARTICULAR EMBODIMENTS

On a représenté à la figure 1 un dispositif de distribution 10 d'un produit fluide.We represented at the figure 1 a device 10 for dispensing a fluid product.

A titre d'exemples non limitatifs, le produit consiste en une crème, une pate ou un gel et il est destiné à une utilisation cosmétique ou alimentaire.By way of nonlimiting examples, the product consists of a cream, a paste or a gel and it is intended for cosmetic or food use.

Le dispositif de distribution 10 comporte un corps 12 rigide de forme cylindrique, ou tubulaire, et d'axe principal A vertical. A titre d'exemple non limitatif, la section du corps 12 selon un plan horizontal est circulaire centrée sur l'axe principal A, c'est-à-dire que le corps est un élément cylindrique de révolution. Il sera compris que l'invention n'est pas limitée à une forme de révolution du corps 12 et que l'invention concerne toute forme tubulaire comme par exemple un tube de section carrée, rectangulaire ou ovale.The distribution device 10 comprises a rigid body 12 of cylindrical, or tubular shape, and of main vertical axis A. By way of nonlimiting example, the section of the body 12 along a horizontal plane is circular centered on the main axis A, that is to say that the body is a cylindrical element of revolution. It will be understood that the invention is not limited to a form of revolution of the body 12 and that the invention relates to any tubular shape such as for example a tube of square, rectangular or oval section.

Le dispositif de distribution 10 comporte aussi une paroi inférieure 14 horizontale formant un piston qui est montée mobile en coulissement par rapport au corps 12 le long de l'axe principal A vertical du dispositif de distribution 10.The distribution device 10 also comprises a horizontal bottom wall 14 forming a piston which is mounted to slide in movable motion relative to the body 12 along the vertical main axis A of the distribution device 10.

Le guidage en coulissement du piston 14 par rapport au corps 12 est réalisé par la coopération de la paroi périphérique 16 du piston 14 avec la paroi cylindrique interne 18 du corps 12. Pour cela, la paroi périphérique 16 du piston 14 est cylindrique, ou tubulaire, centrée sur l'axe principal du dispositif de distribution 10 et elle a la même forme que la paroi cylindrique interne 18 du corps 12.The sliding guide of the piston 14 relative to the body 12 is produced by the cooperation of the peripheral wall 16 of the piston 14 with the internal cylindrical wall 18 of the body 12. For this, the peripheral wall 16 of the piston 14 is cylindrical, or tubular, centered on the main axis of the dispensing device 10 and has the same shape as the internal cylindrical wall 18 of the body 12.

Un jeu est présent entre les deux parois en vis-à-vis 16, 18, pour permettre le coulissement du piston 14 par rapport au corps 12.A clearance is present between the two facing walls 16, 18, to allow the piston 14 to slide relative to the body 12.

Des moyens d'étanchéité sont interposés entre la paroi périphérique 16 du piston 14 et la paroi cylindrique interne 18 du corps 12. Ici, les moyens d'étanchéité consistent en un ou plusieurs joints toriques 20, dont chacun est reçu dans une gorge périphérique 22 formée dans la paroi périphérique 16 du piston 14 et chaque joint torique 20 est comprimé radialement, par rapport à l'axe principal A entre la paroi périphérique 16 du piston 14 et la paroi cylindrique interne 18 du corps 12.Sealing means are interposed between the peripheral wall 16 of the piston 14 and the internal cylindrical wall 18 of the body 12. Here, the sealing means consist of one or more O-rings 20, each of which is received in a peripheral groove 22 formed in the peripheral wall 16 of the piston 14 and each O-ring 20 is compressed radially, with respect to the main axis A between the peripheral wall 16 of the piston 14 and the internal cylindrical wall 18 of the body 12.

Le dispositif de distribution 10 comporte aussi une paroi supérieure 24 qui ferme l'extrémité supérieure 12s du corps 12.The distribution device 10 also includes an upper wall 24 which closes the upper end 12s of the body 12.

Ainsi, l'ensemble formé par le corps 12, le piston 14 et la paroi supérieure 24 délimite un volume fermé 26 dans lequel le produit à distribuer est stocké.Thus, the assembly formed by the body 12, the piston 14 and the upper wall 24 defines a closed volume 26 in which the product to be dispensed is stored.

La paroi supérieure 24 comporte un obturateur à fente 28 qui est apte à s'ouvrir pour permettre la sortie du produit vers l'extérieur en vue de son prélèvement et qui est normalement dans une position fermée hermétiquement dans laquelle l'obturateur à fente 28 maintient le volume fermé 26 isolé de l'extérieur.The upper wall 24 includes a slit shutter 28 which is capable of opening to allow the product to exit towards the outside for its removal and which is normally in a hermetically closed position in which the slit shutter 28 maintains the closed volume 26 isolated from the outside.

Un exemple de réalisation de l'obturateur à fente 28 est décrit dans le document FR3011826 .An embodiment of the slit shutter 28 is described in the document. FR3011826 .

L'obturateur à fente 28 est apte à s'ouvrir lorsque la pression du produit à distribuer dans le volume fermé 26 est supérieure à une pression prédéfinie. Si la pression est inférieure à cette pression prédéfinie, l'obturateur 28 reste dans sa configuration de fermeture.The slit shutter 28 is capable of opening when the pressure of the product to be dispensed in the closed volume 26 is greater than a predefined pressure. If the pressure is lower than this predefined pressure, the shutter 28 remains in its closed configuration.

En outre, lorsque l'obturateur à fente 28 est ouvert, la pression dans le volume fermé est aussi supérieure à la pression extérieure, ce qui provoque la sortie d'une quantité du produit présent dans le volume fermé 26, qui se dépose alors sur la surface extérieure 30 de la paroi supérieure 24.In addition, when the slit shutter 28 is open, the pressure in the closed volume is also greater than the external pressure, which causes the exit of a quantity of the product present in the closed volume 26, which is then deposited on the outer surface 30 of the upper wall 24.

Lorsque la pression du produit dans le volume fermé 26 diminue, l'obturateur à fente 28 se referme par retour élastique.When the pressure of the product in the closed volume 26 decreases, the slit shutter 28 closes by elastic return.

De préférence, l'obturateur à fente 28 comporte deux faces mobiles en vis-à-vis qui forment la fente et qui sont aptes à s'écarter pour ouvrir l'obturateur à fente 28 ou à se rapprocher jusqu'à venir en contact l'une avec l'autre pour fermer l'obturateur à fente. Aussi, lorsqu'elles se rapprochent, elles provoquent un écoulement du produit empêchant à tout composé étranger provenant de l'extérieur de pénétrer dans le volume fermé 26.Preferably, the slit shutter 28 has two faces which are movable opposite which form the slit and which are able to move apart to open the slit shutter 28 or to approach until they come into contact. with each other to close the slit shutter. Also, when they come closer, they cause a flow of the product preventing any foreign compound coming from the outside from entering the closed volume 26.

L'utilisateur balaie alors cette surface extérieure 30 de la paroi supérieure 24, par exemple avec un doigt, pour prélever la quantité de produit qui repose sur la surface extérieure 30 de la paroi supérieure 24.The user then scans this external surface 30 of the upper wall 24, for example with a finger, in order to withdraw the quantity of product which rests on the external surface 30 of the upper wall 24.

La paroi supérieure 24 est réalisée en un matériau déformable élastiquement. Ainsi, lorsqu'un utilisateur exerce une pression sur la paroi supérieure 24, la paroi supérieure 24 se déforme et transmet la pression subie au fluide présent dans le volume fermé 26. La pression dans le volume fermé 26 augmente alors en fonction de la pression exercée par l'utilisateur, jusqu'à obtenir la sortie du produit, comme on l'a décrit précédemment.The upper wall 24 is made of an elastically deformable material. Thus, when a user exerts pressure on the upper wall 24, the upper wall 24 deforms and transmits the pressure undergone to the fluid present in the closed volume 26. The pressure in the closed volume 26 then increases as a function of the pressure exerted by the user, until the product is released, as described above.

Lorsque l'utilisateur cesse son action sur la paroi supérieure 24, celle-ci reprend automatiquement sa forme initiale, ce qui provoque une baisse de la pression dans le volume fermé 26 et par conséquent la fermeture de l'obturateur à fente 28.When the user ceases to act on the upper wall 24, the latter automatically returns to its initial shape, which causes a drop in the pressure in the closed volume 26 and consequently the closing of the slit shutter 28.

Puisqu'une certaine quantité de produit a été prélevée, la quantité de produit présente dans le volume fermé 26 a diminué. Par conséquent, le volume de produit dans le volume fermé 26 a lui aussi diminué.Since a certain amount of product has been withdrawn, the amount of product present in the closed volume 26 has decreased. Consequently, the volume of product in the closed volume 26 has also decreased.

Pour compenser cette variation du volume de produit dans le volume fermé 26, le piston 14 coulisse en direction de la paroi supérieure 24, c'est-à-dire ici vers le haut, par rapport au corps 12 sur une distance correspondant à la variation de volume du produit.To compensate for this variation in the volume of product in the closed volume 26, the piston 14 slides in the direction of the upper wall 24, that is to say here upwards, relative to the body 12 over a distance corresponding to the variation volume of the product.

Le dispositif de distribution 10 comporte aussi des moyens pour empêcher que le piston 14 s'éloigne de la paroi supérieure 24, c'est-à-dire un coulissement du piston 14 vers le bas, lorsqu'une pression est exercée sur la paroi supérieure 24.The dispensing device 10 also comprises means for preventing the piston 14 from moving away from the upper wall 24, that is to say a sliding of the piston 14 downwards, when pressure is exerted on the upper wall 24.

Selon le mode de réalisation représenté aux figures 1 à 3, le dispositif de distribution 10 comporte un ressort 32 qui appuie contre une face inférieure 14i du piston 14 et qui exerce sur le piston 14 un effort orienté vers la paroi supérieure 24.According to the embodiment shown in Figures 1 to 3 , the dispensing device 10 comprises a spring 32 which presses against a lower face 14i of the piston 14 and which exerts on the piston 14 a force oriented towards the upper wall 24.

Ainsi, le ressort 32 génère une pression initiale du produit présent dans le volume fermé 26. Cette pression générée par le ressort est inférieure à la pression provoquant l'ouverture de l'obturateur à fente 28.Thus, the spring 32 generates an initial pressure of the product present in the closed volume 26. This pressure generated by the spring is less than the pressure causing the opening of the slit shutter 28.

Le ressort 32 consiste ici en un ressort hélicoïdal qui est comprimé verticalement entre le piston 14 et une plaque inférieure de fond 34 qui ferme l'extrémité inférieure 12i du corps 12. Cette plaque de fond 34 forme en outre une base pour le dispositif de distribution 10, par laquelle le dispositif de distribution 10 peut être posé sur un support.The spring 32 here consists of a helical spring which is compressed vertically between the piston 14 and a bottom bottom plate 34 which closes the bottom end 12i of the body 12. This bottom plate 34 further forms a base for the dispensing device 10, by which the dispensing device 10 can be placed on a support.

Chacun du piston 14 et de la plaque de fond 34 comportent un fût 36, 38 cylindrique dans lequel une extrémité du ressort 32 est reçue. Ces fûts 36, 38 permettent de guider le ressort 32 afin de le maintenir dans son orientation verticale et éviter tout flambement de celui-ci.Each of the piston 14 and the bottom plate 34 have a cylindrical barrel 36, 38 in which one end of the spring 32 is received. These barrels 36, 38 make it possible to guide the spring 32 in order to maintain it in its vertical orientation and avoid any buckling of the latter.

Selon un autre mode de réalisation représenté à la figure 4, les moyens pour empêcher que le piston 14 s'éloigne de la paroi supérieure 24 lorsqu'une pression est exercée sur la paroi supérieure 24 sont formés par le joint torique 20 qui est apte à être coincé entre la paroi cylindrique interne 18 du corps 12 et une paroi de fond 66 de la gorge périphérique 22 recevant le joint.According to another embodiment shown in figure 4 , the means for preventing the piston 14 from moving away from the upper wall 24 when pressure is exerted on the upper wall 24 are formed by the O-ring 20 which is capable of being wedged between the internal cylindrical wall 18 of the body 12 and a bottom wall 66 of the peripheral groove 22 receiving the seal.

La paroi de fond 66 comporte un tronçon inférieur 68 cylindrique et un tronçon supérieur 70 prolongeant le tronçon inférieur 68 vers la paroi supérieure 24 et qui est de forme conique. Le tronçon supérieur 70 est en forme d'un cône ouvert vers la paroi supérieure 24, c'est-à-dire que son diamètre augmente au fur et à mesure que l'on se rapproche de la paroi supérieure 24.The bottom wall 66 has a cylindrical lower section 68 and an upper section 70 extending the lower section 68 towards the upper wall 24 and which is conical in shape. The upper section 70 is in the form of a cone open towards the upper wall 24, that is to say that its diameter increases as one approaches the upper wall 24.

Le diamètre du tronçon inférieur 68 est légèrement supérieur au diamètre interne du joint torique 20, le diamètre du tronçon supérieur 70 est par conséquent lui aussi supérieur au diamètre interne du joint torique 20 en tout point. Cela permet au joint torique 20 d'être comprimé radialement entre la paroi cylindrique interne 18 du corps 12 et la paroi de fond 66.The diameter of the lower section 68 is slightly greater than the internal diameter of the O-ring 20, the diameter of the upper section 70 is therefore also greater than the internal diameter of the O-ring 20 at any point. This allows the O-ring 20 to be compressed radially between the internal cylindrical wall 18 of the body 12 and the bottom wall 66.

Lorsque le joint torique 20 est situé dans la gorge 22 au niveau du tronçon inférieur 68, la compression radiale du joint torique 20 est sensiblement constante.When the O-ring 20 is located in the groove 22 at the level of the lower section 68, the radial compression of the O-ring 20 is substantially constant.

Aussi, puisque le diamètre du tronçon supérieur 70 augmente au fur et à mesure que l'on se rapproche de la paroi supérieure 24, la compression radiale du joint torique 20 augmente au fur et à mesure que la position du joint torique 20 dans la gorge 22 est située au niveau du tronçon supérieur 70 et se rapproche de la paroi supérieure 24.Also, since the diameter of the upper section 70 increases as one approaches the upper wall 24, the radial compression of the O-ring 20 increases as the position of the O-ring 20 in the groove 22 is located at the level of the upper section 70 and approaches the upper wall 24.

Lorsque le piston 14 a tendance à se déplacer vers la paroi supérieure 24, les efforts de frottement entre le joint torique 20 et la paroi cylindrique interne 18 du corps 12, qui résultent de la compression radiale du joint torique 20, maintiennent le joint torique 20 au niveau du tronçon inférieur 68.When the piston 14 tends to move towards the upper wall 24, the friction forces between the O-ring 20 and the internal cylindrical wall 18 of the body 12, which result from the radial compression of the O-ring 20, maintain the O-ring 20 at the lower section 68.

Dans ce cas, la compression radiale du joint torique 20 produit des efforts de frottement dont la valeur n'empêche pas le déplacement du piston 14 vers la paroi supérieure 24.In this case, the radial compression of the O-ring 20 produces friction forces, the value of which does not prevent the displacement of the piston 14 towards the upper wall 24.

Lorsque le piston 14 a tendance à se déplacer vers la plaque de fond 34, c'est-à-dire à s'éloigner de la paroi supérieure 24, les efforts de frottement entre le joint torique 20 et la paroi cylindrique interne 18 du corps 12, qui résultent de la compression radiale du joint torique 20, maintiennent le joint torique 20 au niveau du tronçon supérieur 70, comme on l'a représenté en traits pointillés à la figure 4. C'est notamment le cas lorsqu'une pression est exercée sur la paroi supérieure 24.When the piston 14 tends to move towards the bottom plate 34, that is to say away from the upper wall 24, the friction forces between the O-ring 20 and the internal cylindrical wall 18 of the body 12, which result from the radial compression of the O-ring 20, maintain the O-ring 20 at the level of the upper section 70, as shown in dotted lines in the figure 4 . This is particularly the case when pressure is exerted on the upper wall 24.

A ce niveau, la compression radiale du joint torique 20 produit des efforts de frottement qui augmentent au fur et à mesure que le joint torique 20 se rapproche de l'extrémité supérieure du tronçon supérieur 70.At this level, the radial compression of the O-ring 20 produces friction forces which increase as the O-ring 20 approaches the upper end of the upper section 70.

Ces efforts de frottement deviennent alors suffisamment importants pour empêchent au piston 14 de s'éloigner de la paroi supérieure 24.These friction forces then become sufficiently great to prevent the piston 14 from moving away from the upper wall 24.

Le piston 14 est alors bloqué en coulissement vers la plaque de fond 34.The piston 14 is then blocked in sliding towards the bottom plate 34.

Lorsque la pression sur la paroi supérieure 24 est relâchée, le piston 14 remonte vers la paroi supérieure 24, comme décrit plus haut. Le joint torique 20 est repositionné au niveau du tronçon inférieur 68 de la paroi de fond 66. Les efforts de frottement sont alors réduits et ne s'opposent pas au déplacement du piston 14 vers la paroi supérieure 24.When the pressure on the upper wall 24 is released, the piston 14 rises towards the upper wall 24, as described above. The O-ring 20 is repositioned at the level of the lower section 68 of the bottom wall 66. The efforts of friction is then reduced and does not oppose the displacement of the piston 14 towards the upper wall 24.

Le piston 14 peut alors se déplacer vers la paroi supérieure 24, que ce soit par l'effet d'aspiration lorsque la paroi supérieure 24 reprend sa forme initiale ou bien par l'action du ressort 32.The piston 14 can then move towards the upper wall 24, either by the suction effect when the upper wall 24 returns to its initial shape or by the action of the spring 32.

Il sera compris que l'invention n'est pas limitée à ces moyens et que le dispositif de distribution peut comporter d'autres moyens anti-retour, qui empêchent au piston 14 de se déplacer vers le bas en s'éloignant de la paroi supérieure 24 et qui permettent un coulissement du piston 14 vers la paroi supérieure 24, c'est-à-dire vers le haut, par rapport au corps 12. Ces moyens anti-retour peuvent en outre être combinés aux moyens d'entrainement qui viennent d'être décrits ci-dessus.It will be understood that the invention is not limited to these means and that the dispensing device may include other non-return means, which prevent the piston 14 from moving downwards away from the upper wall. 24 and which allow the piston 14 to slide towards the upper wall 24, that is to say upwards, relative to the body 12. These non-return means can also be combined with the drive means which come from 'be described above.

La plaque de fond 34 comporte aussi un évent 40 reliant le volume 42 délimité par le corps 12, le piston 14 et la plaque de fond 34, avec l'air environnant, pour éviter toute dépression dans ce volume 42, qui résulterait du déplacement du piston 14 vers le haut et qui gênerait ce déplacement du piston 14.The bottom plate 34 also includes a vent 40 connecting the volume 42 delimited by the body 12, the piston 14 and the bottom plate 34, with the surrounding air, to avoid any depression in this volume 42, which would result from the displacement of the piston 14 upwards and which would hinder this movement of piston 14.

La forme de paroi supérieure 24 est définie pour faciliter le prélèvement du produit par l'utilisateur. Ici, la paroi supérieure 24 est en forme d'un dôme hémisphérique bombé vers le haut. Il sera compris que l'invention n'est pas limitée à cette forme hémisphérique et que la paroi supérieure 24 peut être plane ou bien avoir toute autre forme convexe bombée vers le haut.The shape of the upper wall 24 is defined to facilitate the removal of the product by the user. Here, the upper wall 24 is in the form of a hemispherical dome curved upwards. It will be understood that the invention is not limited to this hemispherical shape and that the upper wall 24 can be planar or else have any other convex shape curved upwards.

Le matériau constitutif de la paroi supérieure 24 est de préférence un matériau choisi par exemple parmi le caoutchouc, un élastomère ou un silicone.The material constituting the upper wall 24 is preferably a material chosen, for example, from rubber, an elastomer or a silicone.

L'épaisseur de la paroi supérieure 24 est définie en fonction de la force que l'utilisateur doit appliquer sur la face supérieure 30 afin de provoquer la déformation de la paroi supérieure 24 et l'ouverture de l'obturateur à fente 28.The thickness of the upper wall 24 is defined as a function of the force that the user must apply to the upper face 30 in order to cause the deformation of the upper wall 24 and the opening of the slit shutter 28.

La paroi supérieure 24 est en outre réalisée en une seule pièce par moulage sur le corps 12 afin d'assurer une bonne fixation de ces deux éléments ensemble ainsi qu'une bonne étanchéité entre eux.The upper wall 24 is further produced in one piece by molding on the body 12 in order to ensure good fixing of these two elements together as well as good sealing between them.

Pour cela, l'extrémité supérieure 12s du corps 12 comporte une rainure périphérique 44 dans laquelle une partie complémentaire 46 de la paroi supérieure 24 est reçue.For this, the upper end 12s of the body 12 has a peripheral groove 44 in which a complementary part 46 of the upper wall 24 is received.

Selon les modes de réalisation représentés aux figures 1 et 2, l'extrémité supérieure 12s du corps 12 comporte une surépaisseur permettant la formation de cette rainure 44.According to the embodiments shown in Figures 1 and 2 , the upper end 12s of the body 12 has an extra thickness allowing the formation of this groove 44.

L'obtention de l'obturateur à fente 28 consiste par exemple à pratiquer une incision dans la paroi supérieure 24 après l'opération de moulage.Obtaining the slit shutter 28 consists for example of making an incision in the upper wall 24 after the molding operation.

Une fente à parois inclinées 48 prolonge l'incision vers le bas, pour faciliter l'écartement des faces de l'obturateur à fente 28 sous l'action de la pression du produit.A slit with inclined walls 48 extends the incision downward, to facilitate the spacing of the faces of the slit shutter 28 under the action of the pressure of the product.

Le piston 14 comporte une face supérieure qui est en vis-à-vis de la face inférieure 50 de la paroi supérieure 24. La forme de la face supérieure du piston 14 est complémentaire de la forme de la face inférieure 50 de la paroi supérieure 24. Ainsi, lorsque le piston 14 est en contact avec la face inférieure 50 de la paroi supérieure 24, le volume fermé 26 est sensiblement nul. Cela signifie qu'il n'y a sensiblement plus de produit à l'intérieur du dispositif de distribution 10.The piston 14 has an upper face which is opposite the lower face 50 of the upper wall 24. The shape of the upper face of the piston 14 is complementary to the shape of the lower face 50 of the upper wall 24 Thus, when the piston 14 is in contact with the lower face 50 of the upper wall 24, the closed volume 26 is substantially zero. This means that there is substantially no longer any product inside the dispensing device 10.

Comme on l'a dit précédemment, la paroi supérieure 24, et par conséquent sa face inférieure 50 est en forme de dôme.As mentioned above, the upper wall 24, and consequently its lower face 50 is in the form of a dome.

Le piston 14 comporte à cet effet un dôme supérieur 52 complémentaire de la face inférieure 50 de la paroi supérieure 24.The piston 14 has for this purpose an upper dome 52 complementary to the lower face 50 of the upper wall 24.

Selon une variante de réalisation représentée à la figure 3, le dôme 52 comporte une pointe 54 qui est complémentaire de la fente 48 à parois inclinées, pour qu'un minimum de produit reste dans le dispositif de distribution 10.According to an alternative embodiment shown in the figure 3 , the dome 52 has a tip 54 which is complementary to the slot 48 with inclined walls, so that a minimum of product remains in the dispensing device 10.

Selon un exemple de réalisation représenté à la figure 1, le dôme 52 consiste en une tôle métallique qui a été emboutie et qui est fixée au reste du piston par tout moyen connu, par exemple par collage. Selon un autre exemple de réalisation, le dôme 52 est réalisé en matière plastique.According to an exemplary embodiment shown in figure 1 , the dome 52 consists of a metal sheet which has been stamped and which is fixed to the rest of the piston by any known means, for example by gluing. According to another exemplary embodiment, the dome 52 is made of plastic.

Selon le mode de réalisation représenté à la figure 2, le dôme 52 consiste en un bloc plein, par exemple réalisé à partir du même matériau élastique que la paroi supérieure 24, qui est fixé au reste du piston 14 par tout moyen connu, par exemple, ici, par l'intermédiaire d'un épaulement 62.According to the embodiment shown in the figure 2 , the dome 52 consists of a solid block, for example made from the same elastic material as the upper wall 24, which is fixed to the rest of the piston 14 by any known means, for example here, by means of a shoulder 62.

Selon le mode de réalisation représenté à la figure 2, le piston 14 est entièrement en forme du dôme 52 complémentaire de la face inférieure 50 de la paroi supérieure 24.According to the embodiment shown in the figure 2 , the piston 14 is entirely in the shape of the dome 52 complementary to the lower face 50 of the upper wall 24.

Comme on peut le voir à la figure 3, le dispositif de distribution 10 comporte aussi un couvercle 56 qui est destiné à recouvrir la paroi supérieure 24. Le couvercle 56 est en forme de dôme complémentaire de la forme de la face supérieure 30 de la paroi supérieure 24. Le couvercle 56 protège ainsi la paroi supérieure 24 de toute action non voulue qui pourrait provoquer la sortie d'une quantité de produit et renforce l'étanchéité de la fermeture du volume fermé 26.As can be seen from the figure 3 , the dispensing device 10 also includes a cover 56 which is intended to cover the upper wall 24. The cover 56 is in the form of a dome complementary to the shape of the upper face 30 of the upper wall 24. The cover 56 thus protects the upper wall 24 of any unwanted action which could cause the exit of a quantity of product and reinforces the sealing of the closure of the closed volume 26.

Le couvercle 56 est monté de manière amovible sur l'extrémité supérieure 12s du corps 12 par clipsage ou par vissage. Pour cela, le bord périphérique du couvercle 56 comporte des formes 58 qui sont destinées à coopérer avec des formes complémentaires 60 de l'extrémité supérieure 12s du corps 12.The cover 56 is removably mounted on the upper end 12s of the body 12 by clipping or by screwing. For this, the peripheral edge of the cover 56 includes shapes 58 which are intended to cooperate with complementary shapes 60 of the upper end 12s of the body 12.

Ici, le couvercle 56 comporte une couche 64 en un matériau ayant un effet bactéricide ou bactériostatique, tel que par exemple du cuivre ou de l'argent, qui libère des ions ayant un effet aseptisant. Cette couche 64 vient en contact avec la paroi supérieure 24 lorsque le couvercle 56 est monté sur le corps 12, opérant ainsi une action d'aseptisation de la paroi supérieure 24.Here, the cover 56 comprises a layer 64 of a material having a bactericidal or bacteriostatic effect, such as for example copper or silver, which releases ions having a sanitizing effect. This layer 64 comes into contact with the upper wall 24 when the cover 56 is mounted on the body 12, thus effecting a sanitizing action on the upper wall 24.

L'étendue de la couche 64 est de préférence définie pour venir en contact avec la totalité de la paroi supérieure 24. Cependant, il sera compris que la couche 64 peut être de dimensions plus faibles pour ne venir en contact qu'avec une partie de la paroi supérieure 24, centrée sur l'obturateur à fente 28.The extent of the layer 64 is preferably defined to come into contact with the entire upper wall 24. However, it will be understood that the layer 64 may be of smaller dimensions so as to come into contact only with a part of the upper wall 24, centered on the slit shutter 28.

Selon une variante de réalisation, le couvercle 56 ne comporte pas une telle couche 64.According to an alternative embodiment, the cover 56 does not include such a layer 64.

Le mode de prélèvement du produit contenu dans ce dispositif de distribution 10 permet de prélever le produit avec la main ou le doigt qui exerce l'action sur la paroi supérieure 24.The method of taking the product contained in this dispensing device 10 makes it possible to take the product with the hand or the finger which exerts the action on the upper wall 24.

En outre, il est possible de modifier la quantité de produit qui sera expulsé. En effet, en fonction de la position de la pression vis à vis de l'axe de la fente, celle-ci s'ouvrira plus ou moins facilement, libérant un volume de produit plus ou moins grand. Pour une pression perpendiculaire à la fente, l'extraction sera plus faible que pour la même pression exercée dans l'axe de celle-ci.In addition, it is possible to modify the quantity of product that will be expelled. Indeed, depending on the position of the pressure with respect to the axis of the slot, the latter will open more or less easily, releasing a greater or lesser volume of product. For a pressure perpendicular to the slot, the extraction will be lower than for the same pressure exerted in the axis of the latter.

Aussi, malgré sa structure simple il n'y a pas de modification de l'aspect extérieur du dispositif de distribution 10, son plaisir d'utilisation ne baisse donc pas au fur et à mesure de la distribution.Also, despite its simple structure there is no modification of the external appearance of the dispensing device 10, its pleasure in use therefore does not drop as the dispensing progresses.

Claims (10)

  1. A dispensing device (10) for dispensing a fluid product including a rigid cylindrical body (12) the main axis of the body (12) of which is vertically oriented, a rigid piston (14) mainly horizontally oriented and which is slidably movable along the vertical direction inside the body (12), and an upper sampling wall (24) which plugs the upper end of the body (12),
    wherein the body (12), the piston (14) and the upper wall (24) delimit a volume (26) for being filled by a product to be dispensed;
    wherein said upper wall (24) includes a slit stopper (28) which is able to be opened to enable said volume (26) to be connected with the outside,
    wherein said upper wall (24) is elastically deformable and is able to be deformed inwardly of said volume (26) when a pressure is manually exerted on the upper wall (24), to cause an increase in the pressure inside the volume (26) and cause the slit stopper (28) to be opened,
    characterised in that the piston (14) bears an O-ring (20) which is radially compressed between an inner cylindrical wall (18) of the body (12) and a wall (66) of the piston (14), said wall (66) of the piston (14) including a conical-shaped segment (70) opened towards the upper wall (24) against which the O-ring (20) bears when the piston is driven to move apart from the upper wall (24), to prevent the piston (14) from moving apart from the upper wall (24) when a pressure is exerted on the upper wall (24).
  2. The dispensing device (10) according to claim 1, characterised in that it includes means (32) for movingly driving the piston (14) to the upper wall (24).
  3. The dispensing device (10) according to the preceding claim, characterised in that the driving means include a spring (32) which is vertically compressed between the piston (14) and a bottom plate (34) attached to the lower end (12i) of the body (12).
  4. A dispensing device (10) for dispensing a fluid product including a rigid cylindrical body (12) the main axis of the body (12) of which is vertically oriented, a rigid piston (14) mainly horizontally oriented and which is slidably movable along the vertical direction inside the body (12), and an upper sampling wall (24) which plugs the upper end of the body (12),
    wherein the body (12), the piston (14) and the upper wall (24) delimit a volume (26) for being filled by a product to be dispensed;
    wherein said upper wall (24) includes a slit stopper (28) which is able to be opened to enable said volume (26) to be connected with the outside,
    wherein said upper wall (24) is elastically deformable and is able to be deformed inwardly of said volume (26) when a pressure is manually exerted on the upper wall (24), to cause an increase in the pressure inside the volume (26) and cause the slit stopper (28) to be opened,
    characterised in that it includes a spring (32) which is vertically compressed between the piston (14) and a bottom plate (34) attached to the lower end (12i) of the body (12) to prevent the piston (14) from moving apart from the upper wall (24) when a pressure is exerted on the upper wall (24).
  5. The dispensing device (10) according to claim 3 or 4, characterised in that the bottom plate (34) includes a vent (40) connecting the volume (42) delimited by the body (12), the piston (14) and the bottom plate (34) with the outside.
  6. The dispensing device (10) according to any of the preceding claims, characterised in that the piston (14) includes an upper face which is facing a lower face (50) of the upper wall (24) and in that the shape of the upper face of the piston (14) is complementary to the shape of the lower face (50) of the upper wall (24).
  7. The dispensing device (10) according to any of the preceding claims, characterised in that the upper wall (24) is of an upwardly bulged convex dome shape.
  8. The dispensing device (10) according to any of the preceding claims, characterised in that it includes a removable lid (56) which is for covering the upper wall (24) and which is removably mounted to the upper end (12s) of the body (12).
  9. The dispensing device (10) according to the preceding claim, characterised in that the shape of the lid (56) is complementary to the shape of the upper wall (24) and the lid (56) includes a layer (64) of bactericidal material which contacts at least one part of the upper wall (24) when the lid is mounted to the upper end (12s) of the body (12).
  10. The dispensing device (10) according to any of the preceding claims, characterised in that the upper end (12s) of the body (12) includes a peripheral groove (44) which receives a part (46) complementary to the upper wall (24).
EP17732526.3A 2016-06-10 2017-06-09 Device for dispensing a fluid product Active EP3468893B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1655395A FR3052446B1 (en) 2016-06-10 2016-06-10 DEVICE FOR DISPENSING FLUID PRODUCT
PCT/FR2017/051459 WO2017212183A1 (en) 2016-06-10 2017-06-09 Device for dispensing a fluid product

Publications (2)

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EP3468893A1 EP3468893A1 (en) 2019-04-17
EP3468893B1 true EP3468893B1 (en) 2020-04-22

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EP17732526.3A Active EP3468893B1 (en) 2016-06-10 2017-06-09 Device for dispensing a fluid product

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US (1) US10874189B2 (en)
EP (1) EP3468893B1 (en)
JP (1) JP6953451B2 (en)
KR (1) KR20190017937A (en)
CN (1) CN109311583B (en)
AU (1) AU2017277132A1 (en)
BR (1) BR112018074945A2 (en)
CA (1) CA3027114A1 (en)
ES (1) ES2807218T3 (en)
FR (1) FR3052446B1 (en)
IL (1) IL263520B (en)
RU (1) RU2742692C2 (en)
WO (1) WO2017212183A1 (en)
ZA (1) ZA201808169B (en)

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IT201800006362A1 (en) * 2018-06-22 2018-09-22 Gianluigi Azzollini AIR LIMITATION SYSTEM FOR BOTTLES

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BR112018074945A2 (en) 2019-03-06
US20190159573A1 (en) 2019-05-30
KR20190017937A (en) 2019-02-20
IL263520B (en) 2022-06-01
US10874189B2 (en) 2020-12-29
JP6953451B2 (en) 2021-10-27
JP2019517442A (en) 2019-06-24
CN109311583B (en) 2020-07-14
FR3052446A1 (en) 2017-12-15
IL263520A (en) 2019-01-31
EP3468893A1 (en) 2019-04-17
CA3027114A1 (en) 2017-12-14
AU2017277132A1 (en) 2018-12-13
CN109311583A (en) 2019-02-05
WO2017212183A1 (en) 2017-12-14
RU2742692C2 (en) 2021-02-09
RU2019100038A3 (en) 2020-09-07
ES2807218T3 (en) 2021-02-22
ZA201808169B (en) 2019-07-31
FR3052446B1 (en) 2018-07-13
RU2019100038A (en) 2020-07-13

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