EP3199245B1 - Air-venting device for a liquid product dispenser with no air intake - Google Patents

Air-venting device for a liquid product dispenser with no air intake Download PDF

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Publication number
EP3199245B1
EP3199245B1 EP17150345.1A EP17150345A EP3199245B1 EP 3199245 B1 EP3199245 B1 EP 3199245B1 EP 17150345 A EP17150345 A EP 17150345A EP 3199245 B1 EP3199245 B1 EP 3199245B1
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EP
European Patent Office
Prior art keywords
piston
ring
dispenser
air
lip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17150345.1A
Other languages
German (de)
French (fr)
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EP3199245A1 (en
Inventor
Eric Rossignol
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albea Lacrost SAS
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Albea Lacrost SAS
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Publication date
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Publication of EP3199245A1 publication Critical patent/EP3199245A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • 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
    • B65D47/32—Closures with discharging devices other than pumps with means for venting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0041—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure without contact of the fluid remaining in the container with the atmospheric air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0097—Means for filling or refilling the sprayer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1045—Sealing or attachment arrangements between pump and container the pump being preassembled as an independent unit before being mounted on the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on 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
    • 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
    • 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
    • B65D2205/00—Venting means
    • 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
    • B65D2205/00—Venting means
    • B65D2205/04—Venting means for venting during the initial insertion of a piston
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/20—Sealing means

Definitions

  • the object of the present invention is to overcome the various drawbacks stated above, by means of a device making it possible to purge the residual air present in the reservoir, and this while protecting the purge ring as soon as it leaves the mold and until it is mounted in the tank to avoid any risk of subsequent leakage.
  • This reservoir 6 can be flexible or rigid, contain a piston 8 (or another system) or not to follow the variability of the volume of product 7.
  • the figure 4 shows a second possible configuration of the air purge device according to the invention. It still consists of a purge ring 1, and a protective part consisting in this case of a piston 8.
  • This device is intended to be no longer placed on a distributor head, therefore in the upper part of a distributor, but in the bottom of the reservoir 6 of the distributor, therefore in the lower part of a distributor.
  • the piston 8 moves from the bottom to the top of the reservoir 6 in order to reduce the internal volume of the reservoir 6 as the consumer takes product 7. It ensures by sliding the static and dynamic seal with the internal wall of the tank 6.
  • a first sleeve 85 extends from the upper surface of the disc 81, in the direction of the ring 1, and accommodates the sleeve 13 of the ring 1.
  • a second sleeve 83 extends from the lower surface of the disc 81, in the direction of the ring. bottom of the reservoir 6 when the piston 8 is mounted in the reservoir 6.
  • the orifice opens out into the two sleeves 83,85.
  • the diameter of the first sleeve 85 is less than the diameter of the second sleeve 83.
  • the end piece 16 of the sleeve 13 of the ring 1 is retained by this shoulder 80 after it snaps into the second sleeve 83 of the piston 8.
  • the piston 8 comprises a second peripheral skirt 82 connected to the outer periphery of the disc 81 and extending in the direction of the bottom of the reservoir 6 when the piston 8 is mounted in the reservoir 6.
  • the free ends of the two skirts 82,84 consist of sealing lips 89,88, the function of which is to seal the reservoir 6 when the dispenser is used.
  • These lips 89,88 are also fragile, just like the lip 12 of the ring 1.
  • the purge ring 1 and piston 8 assembly is fixed in a bottom part 9 which will be stored. in bulk then packaged. This bottom part 9 protects the lips 89,88 of the piston 8, as can be seen in figures 5a and 5b .
  • the bottom part 9, purge ring 1 and piston 8 assembly is called a sealing device because it enables a reservoir 6 which has no bottom to be closed. It is this type of reservoir 6 which will be used to accommodate the purge ring 1 and piston 8 assembly according to the invention.
  • the tank 6 in figure 6a (variant a) comprises an interlocking zone 61 located at a distance from its open end 62, so that the long section 92a of the bottom part 9 according to the figure 5a come and fit into it.
  • FIGS 7a and 7b The bottom part 9 is then positioned above the reservoir 6 and centered on the reservoir 6, so that the lip 88 of the first skirt 84 of the piston 8 comes into contact with the internal wall of the reservoir 6 so that to seal it. As the bottom part 9 moves closer to the reservoir 6, the air pressure contained in the volume A increases. This volume A corresponds to the volume of air included in the reservoir 6 between the product 7 and the ring 1.
  • the piston 8 is therefore movable relative to the bottom part 9 between an initial extended position visible to the figures 5a to 8b , and a retracted final position visible to figures 9a to 9b .
  • Ring 1 remains fixed relative to piston 8.
  • the figures 10 to 12 present a third possible configuration of the purge device.
  • the bottom part 9, the piston 8 and the ring 1 are identical to the parts described according to figures 5a to 9b (two variants always possible), with a few details as explained below.
  • the piston 8 comprises a single sleeve 83 developing in the direction of the bottom part 9, and coming to fit into the orifice of the bottom part 9.
  • the bottom part 9 continues its approach, until it fits over the reservoir 6.
  • the lip 89 of the second skirt 82 of the piston 8 finally comes into contact with the internal wall of the reservoir 6 so as to finalize the seal .
  • the volume of air A is always expelled into the chamber B via the ribs 87 formed in the skirt 84 of the piston 8, then escapes to the outside via the ribs 10 formed in the sleeve 13 of the ring 1.
  • the sleeve 13 extends from the outer periphery of the cap 11 in the direction of the piston 8, while the lip 12 extends from the periphery of the internal orifice 14 of the cap 11 in the direction of the piston 8.
  • the lip 12 still comes into contact with an internal wall of the piston 8, but it is now the wall of the first sleeve 85.
  • the lip 12 surrounds the first sleeve 85, and comes into contact with the wall of the sleeve 85.
  • the sleeve 13 comes into contact with the internal wall of the first skirt 84 of the piston 8 in a sealed manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un dispositif de purge d'air pour distributeur de produit liquide sans reprise d'air. L'invention concerne également une tête de distribution pour un tel distributeur, ainsi qu'un dispositif d'obturation pour un tel distributeur. L'invention concerne finalement un distributeur de produit liquide sans reprise d'air comportant une telle tête de distribution et un tel dispositif d'obturation.The invention relates to an air purge device for a liquid product dispenser without air intake. The invention also relates to a dispensing head for such a dispenser, as well as to a closure device for such a dispenser. The invention finally relates to a liquid product dispenser without air intake comprising such a dispensing head and such a closure device.

L'invention s'applique plus particulièrement à la distribution de produits cosmétiques ou pharmaceutiques à partir d'un réservoir équipé notamment de moyens de prélèvement du produit.The invention applies more particularly to the dispensing of cosmetic or pharmaceutical products from a reservoir equipped in particular with means for withdrawing the product.

Il peut s'agir d'un réservoir rigide ou flexible. Au fur et à mesure que le consommateur prélève du produit, soit une dépression s'installe dans le réservoir et le système de prélèvement doit vaincre cette dépression pour continuer de fonctionner correctement, ou bien le volume interne du réservoir se réduit, soit en se déformant si le réservoir est flexible, soit grâce à un fond mobile pourvu de moyens d'étanchéité, via un piston par exemple, si le réservoir est rigide, afin de compenser le vide ainsi créé.It can be a rigid or flexible tank. As the consumer takes product, either a vacuum settles in the tank and the sampling system must overcome this vacuum to continue to operate correctly, or the internal volume of the tank is reduced, or by deforming if the reservoir is flexible, or by virtue of a movable bottom provided with sealing means, via a piston for example, if the reservoir is rigid, in order to compensate for the vacuum thus created.

Lors de l'assemblage du distributeur, il peut y avoir un résiduel d'air dans le réservoir. Ce résiduel d'air peut entraîner des perturbations dans l'utilisation du produit, à savoir des dosages incomplets, des crachotements lors de la distribution, une altération des propriétés chimiques du produit, etc.When assembling the dispenser, there may be residual air in the reservoir. This residual air can cause disturbances in the use of the product, namely incomplete dosages, spitting during dispensing, alteration of the chemical properties of the product, etc.

Etat de la techniqueState of the art

On connait des têtes de distribution comportant une bague de purge souple permettant d'assurer la fonction de purge d'air du résiduel d'air présent dans le réservoir. Cependant, cette bague souple est relativement fragile, notamment au niveau de sa lèvre périphérique d'étanchéité, et peut être abîmée lors de son conditionnement en vrac ou de sa distribution sur les chaînes de conditionnement, qu'elle soit assemblée ou non dans la tête de distribution. En effet, même lorsqu'elle est assemblée dans la tête de distribution, la bague saille de la tête de distribution et tout son pourtour périphérique, dont la lèvre, est exposé, d'où le risque de détérioration. Or l'herméticité du distributeur et le bon conditionnement du produit à l'intérieur dépendent étroitement de la fiabilité de la bague. Une bague de purge de l'état de la technique est connue du WO 2005/113379 A1 .Distribution heads are known comprising a flexible purge ring making it possible to perform the function of purging the air of the residual air present in the reservoir. However, this flexible ring is relatively fragile, in particular at its peripheral sealing lip, and can be damaged during its packaging in bulk or its distribution on the packaging lines, whether or not it is assembled in the head. of distribution. In fact, even when it is assembled in the dispensing head, the ring protrudes from the dispensing head and its entire peripheral periphery, including the lip, is exposed, hence the risk of damage. However, the airtightness of the dispenser and the proper packaging of the product inside depend closely on the reliability of the ring. A state of the art purge ring is known from WO 2005/113379 A1 .

Résumé de l'inventionSummary of the invention

La présente invention a pour objectif de pallier les différents inconvénients énoncés ci-dessus, au moyen d'un dispositif permettant de purger le résiduel d'air présent dans le réservoir, et ce tout en protégeant la bague de purge dès sa sortie du moule et jusqu'à son montage dans le réservoir pour éviter tout risque de fuite ultérieure.The object of the present invention is to overcome the various drawbacks stated above, by means of a device making it possible to purge the residual air present in the reservoir, and this while protecting the purge ring as soon as it leaves the mold and until it is mounted in the tank to avoid any risk of subsequent leakage.

Ce but est atteint grâce à un dispositif de purge d'air pour distributeur de produit liquide sans reprise d'air comprenant un réservoir équipé de moyens de prélèvement du produit, ledit dispositif comprenant une bague de purge comportant une lèvre d'étanchéité déformable se logeant à l'intérieur d'une pièce de protection prévue pour s'insérer à l'intérieur du réservoir et assurer l'étanchéité dudit réservoir, la déformation de la lèvre lors du montage du dispositif de purge d'air dans le réservoir provoquant la purge d'air du réservoir, ladite pièce de protection se composant d'un disque, d'une jupe d'étanchéité périphérique raccordée au pourtour externe du disque et d'un retour annulaire ou d'une seconde jupe s'étendant dans une direction opposée à ladite jupe d'étanchéité.This aim is achieved by means of an air purge device for a liquid product dispenser without air intake comprising a reservoir equipped with means for withdrawing the product, said device comprising a purge ring comprising a deformable sealing lip accommodating itself inside a protective part designed to fit inside the tank and seal said tank, the deformation of the lip when mounting the air purge device in the tank causing the purge air from the reservoir, said protection piece consisting of a disc, a peripheral sealing skirt connected to the outer periphery of the disc and an annular return or a second skirt extending in an opposite direction to said sealing skirt.

L'idée principale de cette invention consiste à associer systématiquement une pièce de protection destinée à protéger la bague de purge, depuis sa fabrication et jusqu'à son montage dans le distributeur. La bague de purge a pour fonction de purger l'air résiduel présent dans le réservoir au moment de l'assemblage du distributeur. La bague de purge est activée uniquement lors de l'assemblage du distributeur, afin qu'il puisse être mis en service en étant dépourvu de reprise d'air. La bague de purge n'intervient plus une fois que le distributeur est mis en service et délivre des doses de produit. L'absence d'air dans le réservoir est ensuite assuré soit par déformation du réservoir, soit par un piston mobile.The main idea of this invention consists in systematically associating a protective part intended to protect the purge ring, from its manufacture to its assembly in the distributor. The function of the purge ring is to purge the residual air present in the tank when the distributor is assembled. The purge ring is only activated when the distributor is assembled, so that it can be put into service without being returned air. The purge ring no longer intervenes once the dispenser is put into service and delivers doses of product. The absence of air in the reservoir is then ensured either by deformation of the reservoir or by a movable piston.

Selon les différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • la bague de purge est dotée de moyens de retenue et de calage coopérant avec la pièce de protection.
  • les moyens de retenue et de calage consistent en une douille coopérant avec un manchon central s'étendant de la pièce de protection.
  • la douille axiale de la bague de purge est insérée à l'intérieur du manchon central de la pièce de protection
  • le manchon central de la pièce de protection est inséré à l'intérieur de la douille axiale de la bague de purge
  • la bague de purge est constituée d'une calotte prolongée annulairement par ladite lèvre d'étanchéité.
  • ladite lèvre d'étanchéité se raccorde au pourtour de la calotte par une portion concave et se plaque, par arc-boutement, sur une paroi interne de la pièce de protection.
  • ledit disque est d'un orifice central à partir duquel s'étend un manchon central, la lèvre d'étanchéité périphérique de la bague de purge venant se plaquer contre la paroi du manchon central ou contre la paroi de ladite jupe d'étanchéité périphérique de la pièce de protection.
  • le disque de la pièce de protection a une section circulaire
  • le disque de la pièce de protection a une section ovale
According to the different embodiments of the invention, which can be taken together or separately:
  • the purge ring is provided with retaining and wedging means cooperating with the protection part.
  • the retaining and wedging means consist of a sleeve cooperating with a central sleeve extending from the protective part.
  • the axial sleeve of the purge ring is inserted inside the central sleeve of the protection piece
  • the central sleeve of the protection piece is inserted inside the axial sleeve of the purge ring
  • the purge ring consists of a cap extended annularly by said sealing lip.
  • said sealing lip is connected to the periphery of the cap by a concave portion and is pressed, by bracing, on an internal wall of the protective part.
  • said disc has a central orifice from which extends a central sleeve, the peripheral sealing lip of the purge ring coming to rest against the wall of the central sleeve or against the wall of said peripheral sealing skirt of the protection piece.
  • the disc of the protection piece has a circular section
  • the disc of the protection piece has an oval section

Selon une première configuration possible, la pièce de protection consiste en un col appartenant à une tête de distribution du distributeur de produit.According to a first possible configuration, the protective part consists of a neck belonging to a dispensing head of the product dispenser.

Selon une deuxième configuration possible, la pièce de protection consiste en un piston appartenant au distributeur de produit.According to a second possible configuration, the protection piece consists of a piston belonging to the product dispenser.

Conformément à la première configuration, l'invention concerne également une tête de distribution d'un distributeur de produit liquide sans reprise d'air, comportant une pompe et un dispositif de purge d'air tel que décrit précédemment, la pièce de protection consistant en un col clipsé sur la pompe, lesdits moyens de retenue et de calage de la bague de purge consistant en une douille axiale insérée et calée dans le manchon central du col.In accordance with the first configuration, the invention also relates to a dispensing head of a liquid product dispenser without air intake, comprising a pump and an air purge device as described above, the protective part consisting of a neck clipped onto the pump, said means for retaining and wedging the purge ring consisting of an axial sleeve inserted and wedged in the central sleeve of the neck.

Plus généralement, l'invention concerne un distributeur de produit liquide sans reprise d'air comprenant un réservoir ainsi qu'une tête de distribution telle que décrite ci-dessus, la lèvre de la bague de purge étant déformée élastiquement par surpression lors de l'assemblage de la tête de distribution sur le réservoir. La purge de l'air résiduel existant au sein du distributeur lors de son assemblage est alors réalisé via la tête de distribution.More generally, the invention relates to a liquid product dispenser without air intake comprising a reservoir as well as a dispensing head as described above, the lip of the purge ring being elastically deformed by overpressure during the assembly of the distribution head on the tank. The bleeding of the residual air existing within the distributor during its assembly is then carried out via the distribution head.

Conformément à la deuxième configuration, l'invention concerne également un dispositif d'obturation pour distributeur de produit liquide sans reprise d'air comprenant un réservoir équipé de moyens de prélèvement du produit, ledit dispositif comportant une pièce de fond formant le fond du distributeur et étant équipé d'un dispositif de purge d'air tel que décrit précédemment, la pièce de protection consistant en un piston monté sur la pièce de fond.According to the second configuration, the invention also relates to a closure device for a liquid product dispenser without air intake comprising a reservoir equipped with means for withdrawing the product, said device comprising a bottom part forming the bottom of the dispenser and being equipped with an air purge device as described above, the protective part consisting of a piston mounted on the bottom part.

Selon les différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • la pièce de fond se compose d'un fond formant le fond du distributeur, ainsi que d'un tronçon périphérique apte à venir entourer le réservoir.
  • le dispositif de purge d'air est mobile en translation par rapport à la pièce de fond, entre une position initiale sortie dès son conditionnement et jusqu'à la mise en place du dispositif d'obturation dans le distributeur, et une position finale rentrée avant la distribution du produit, le passage de la position sortie à la position rentrée provoquant la purge d'air du distributeur par déformation de la lèvre de la bague de purge.
  • lesdits moyens de retenue et de calage de la bague de purge consistent en une douille axiale insérée et calée dans le manchon central du piston, la bague étant mobile par rapport au piston entre une position initiale sortie où la douille axiale saille de la pièce de fond vers l'extérieur et une position finale rentrée où la douille axiale est localisée à l'intérieur de la pièce de fond, le passage de la position sortie à la position rentrée provoquant la purge d'air du distributeur par déformation de la lèvre de la bague de purge.
  • le piston comporte un premier manchon central s'étendant d'une face supérieure du disque et coopérant avec la bague de purge, et un second manchon central s'étendant d'une face inférieure du disque en direction du fond du réservoir et étant apte à s'insérer dans un orifice central prévu à cet effet dans la pièce de fond.
  • la bague est fixe par rapport au piston, le piston étant mobile entre une position initiale sortie où le second manchon central saille de la pièce de fond vers l'extérieur et une position finale rentrée où le second manchon central est localisé à l'intérieur de la pièce de fond, le passage de la position sortie à la position rentrée provoquant la purge d'air du distributeur par déformation de la lèvre de la bague de purge.
  • l'extrémité libre de la jupe du piston vient se caler contre la paroi interne du réservoir, afin d'assurer l'étanchéité à l'air du distributeur lors de son utilisation.
According to the different embodiments of the invention, which can be taken together or separately:
  • the bottom part consists of a bottom forming the bottom of the dispenser, as well as a peripheral section capable of surrounding the reservoir.
  • the air purge device is movable in translation with respect to the base part, between an initial position extended as soon as it is packaged and until the installation of the closure device in the distributor, and a final position retracted before dispensing the product, changing from the extended position to the retracted position causing the air to be purged from the distributor by deformation of the lip of the purge ring.
  • said means for retaining and wedging the purge ring consist of an axial sleeve inserted and wedged in the central sleeve of the piston, the ring being movable relative to the piston between an initial extended position where the axial sleeve protrudes from the bottom part outwards and a retracted final position where the axial sleeve is located inside the end piece, the passage from the extended position to the retracted position causing the air to be purged from the distributor by deformation of the lip of the purge ring.
  • the piston comprises a first central sleeve extending from an upper face of the disc and cooperating with the purge ring, and a second central sleeve extending from a lower face of the disc in the direction of the bottom of the reservoir and being able to fit into a central hole provided for this purpose in the back piece.
  • the ring is fixed relative to the piston, the piston being movable between an initial extended position where the second central sleeve protrudes from the bottom part towards the outside and a final retracted position where the second central sleeve is located inside the bottom part, the passage from the extended position to the retracted position causing the air purge of the distributor by deformation of the lip of the purge ring.
  • the free end of the piston skirt comes to be wedged against the internal wall of the reservoir, in order to ensure the airtightness of the distributor during its use.

Plus généralement, l'invention concerne un distributeur de produit liquide sans reprise d'air comprenant un réservoir équipé de moyens de prélèvement du produit ainsi qu'un dispositif d'obturation tel que décrit ci-dessus. La purge de l'air résiduel existant au sein du distributeur lors de son assemblage est alors réalisé via le dispositif d'obturation.More generally, the invention relates to a liquid product dispenser without air intake comprising a reservoir equipped with means for withdrawing the product as well as a sealing device as described above. The bleeding of the residual air existing within the distributor during its assembly is then carried out via the closure device.

Présentation des figuresPresentation of figures

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The invention will be better understood, and other aims, details, characteristics and advantages thereof will emerge more clearly during the detailed explanatory description which follows, of at least one embodiment of the invention given to by way of purely illustrative and non-limiting example, with reference to the appended schematic drawings.

Sur ces dessins :

  • la figure 1 est une vue de coupe d'une tête de distribution munie d'un dispositif de purge d'air selon l'art antérieur ;
  • la figure 2 est une vue de coupe d'une tête de distribution munie d'un dispositif de purge d'air selon une première configuration possible de l'invention ;
  • la figure 3 montre la tête de distribution selon la figure 2 assemblée à un réservoir ;
  • la figure 4 est une vue en coupe et en perspective d'un dispositif de purge d'air selon une deuxième configuration possible de l'invention ;
  • les figures 5a et 5b sont des vues en coupe de deux variantes d'un dispositif d'obturation muni d'un dispositif de purge selon la figure 4 ;
  • les figures 6a et 6b sont des vues en coupe de deux variantes d'un réservoir assemblé à une tête de distribution, en correspondance avec les figures 5a et 5b ;
  • les figures 7a et 7b, 8a et 8b, 9a et 9b montrent les étapes pour l'assemblage d'un dispositif d'obturation selon les figures 5a et 5b sur un réservoir selon les figures 6a et 6b ;
  • les figures 10, 11 et 12 montrent les étapes pour l'assemblage d'un dispositif d'obturation muni d'un dispositif de purge selon une troisième configuration possible de l'invention sur un réservoir selon les figures 6a et 6b ;
  • la figure 13 est une vue en coupe illustrant un dispositif d'obturation muni d'un dispositif de purge selon une quatrième configuration possible de l'invention.
On these drawings:
  • the figure 1 is a sectional view of a dispensing head provided with an air purge device according to the prior art;
  • the figure 2 is a sectional view of a dispensing head provided with an air purge device according to a first possible configuration of the invention;
  • the figure 3 shows the distributor head according to figure 2 assembled to a tank;
  • the figure 4 is a sectional and perspective view of an air purge device according to a second possible configuration of the invention;
  • the figures 5a and 5b are sectional views of two variants of a closure device provided with a purge device according to figure 4 ;
  • the figures 6a and 6b are sectional views of two variants of a reservoir assembled to a dispensing head, in correspondence with the figures 5a and 5b ;
  • the figures 7a and 7b , 8a and 8b , 9a and 9b show the steps for assembling a closure device according to figures 5a and 5b on a tank according to figures 6a and 6b ;
  • the figures 10, 11 and 12 show the steps for assembling a closure device provided with a purge device according to a third possible configuration of the invention on a tank according to figures 6a and 6b ;
  • the figure 13 is a sectional view illustrating a closure device provided with a purge device according to a fourth possible configuration of the invention.

Description détailléedetailed description

Les dispositifs de purge d'air représentés sur les différentes figures sont destinés à être monté sur des distributeurs de produits 7 liquides ou semi-liquides fonctionnant sans reprise d'air et appelés parfois « airless ».The air purge devices shown in the various figures are intended to be mounted on distributors of liquid or semi-liquid products 7 operating without air intake and sometimes called “airless”.

Ce type de distributeur est notamment équipé d'un réservoir 6 et de moyens de prélèvement du produit 7 tels qu'une pompe 5.This type of dispenser is in particular equipped with a reservoir 6 and means for withdrawing the product 7 such as a pump 5.

En référence à la figure 1, il est représenté une tête de distributeur selon l'art antérieur comprenant de façon classique les éléments suivants :

  • un bouton poussoir 4
  • une pompe 5 amenant le produit depuis un réservoir (non représenté) vers le bouton poussoir 4
  • un col 2 monté sur la pompe 5
  • une frette 3 d'habillage montée sur le col 2 et permettant de cacher la pompe 5
With reference to the figure 1 , there is shown a dispenser head according to the prior art conventionally comprising the following elements:
  • a push button 4
  • a pump 5 bringing the product from a reservoir (not shown) to the push button 4
  • a neck 2 mounted on the pump 5
  • a covering band 3 mounted on the neck 2 and allowing to hide the pump 5

Dans ce cas, le réservoir peut consister en un réservoir flexible de type poche ou tube, ou en un réservoir rigide du type flacon. Ce réservoir peut contenir ou non un piston, ou tout autre système permettant au distributeur de fonctionner sans reprise d'air.In this case, the reservoir may consist of a flexible reservoir of the bag or tube type, or of a rigid reservoir of the flask type. This reservoir may or may not contain a piston, or any other system allowing the distributor to operate without air intake.

Une telle tête de distribution peut inclure un résiduel d'air lors de l'assemblage de cette tête sur le réservoir lors de l'opération de conditionnement. Ce résiduel d'air peut entraîner des perturbations dans l'utilisation du produit à distribuer.Such a distribution head may include a residual air during the assembly of this head on the reservoir during the conditioning operation. This residual air can cause disturbances in the use of the product to be dispensed.

Pour cela, une bague 1 de purge souple est ajoutée à la tête de distribution, et permet d'assurer la fonction de purge d'air.For this, a flexible purge ring 1 is added to the distribution head, and makes it possible to perform the air purge function.

Cette bague 1 de purge est fixée au col 2 de la tête de distribution.This purge ring 1 is attached to the neck 2 of the dispensing head.

Elle consiste plus précisément en une calotte 11 d'allure tronconique, prolongée latéralement vers l'extérieur par une lèvre d'étanchéité 12, dirigée perpendiculairement à l'axe central X de la bague 1. Cette lèvre 12 est généralement réalisée avec un matériau souple, par exemple en polyéthylène basse densité, ou bien à base d'élastomère, et est fragile, en particulier au niveau de son extrémité amincie qui est destinée à venir en contact d'appui, sous légère contrainte, contre la paroi interne du réservoir.It consists more precisely of a cap 11 of frustoconical appearance, extended laterally outwards by a sealing lip 12, directed perpendicularly to the central axis X of the ring 1. This lip 12 is generally made of a flexible material. , for example in low density polyethylene, or else based on elastomer, and is fragile, in particular at its thinned end which is intended to come into bearing contact, under slight stress, against the internal wall of the reservoir.

La bague 1 de purge comporte également une douille 13 axiale centrée sur la calotte 11. Cette douille 13 est dotée de moyens de maintien pour se fixer à la pompe 5. La douille 13 est creuse, et présente un orifice 14 traversant de manière à ce que le produit contenu dans le réservoir puisse passer à travers la douille 13, puis dans la pompe 5 pour être amené vers le bouton poussoir 4.The purge ring 1 also comprises an axial sleeve 13 centered on the cap 11. This sleeve 13 is provided with retaining means for attaching to the pump 5. The sleeve 13 is hollow, and has an orifice 14 passing through so that that the product contained in the reservoir can pass through the sleeve 13, then into the pump 5 to be brought to the push button 4.

La bague 1 est ainsi fixée à la pompe 5 et saille en partie inférieure de la tête de distribution. La lèvre 12 est séparée du col 2 par un interstice e. La lèvre 12 est ainsi exposée, sans aucune protection autour d'elle, et peut s'abîmer lors du stockage en vrac des têtes de distribution ainsi équipées de bagues 1.The ring 1 is thus fixed to the pump 5 and protrudes from the lower part of the dispensing head. The lip 12 is separated from the neck 2 by an interstice e. The lip 12 is thus exposed, without any protection around it, and can be damaged during the bulk storage of the dispensing heads thus equipped with rings 1.

La figure 2 montre une tête de distribution selon l'invention. Elle est analogue à celle de la figure 1 pour les éléments qui portent la même référence, à l'exception du col 2 et de la bague 1 de purge, qui forment ensemble une première configuration possible du dispositif de purge d'air selon l'invention.The figure 2 shows a dispensing head according to the invention. It is analogous to that of the figure 1 for items bearing the same reference, with the exception of col 2 and purge ring 1, which together form a first possible configuration of the air purge device according to the invention.

En effet, le col 2 est désormais doté d'une jupe périphérique 24 s'étendant en direction de la bague 1 de manière à protéger sa lèvre 12.Indeed, the neck 2 is now provided with a peripheral skirt 24 extending in the direction of the ring 1 so as to protect its lip 12.

Plus précisément, le col 2 comporte classiquement un disque 21, de section circulaire ou ovale par exemple, doté d'un orifice central à partir duquel s'étend un manchon central 23 dans lequel est inséré la partie inférieure de la pompe 5. Ce col 2 comporte également classiquement un retour annulaire 22 dirigé vers le bouton poussoir 4 et permettant le centrage et le calage de la frette 3 d'habillage. En plus de ce retour, et comme annoncé précédemment, le col 2 comporte selon l'invention une jupe périphérique 24 raccordée au pourtour du disque 21 et s'étendant dans une direction opposée au retour annulaire 22. La lèvre 12 de la bague 1 vient en appui contre la paroi interne de cette jupe périphérique 24.More precisely, the neck 2 conventionally comprises a disc 21, of circular or oval section for example, provided with a central orifice from which extends a central sleeve 23 in which the lower part of the pump 5 is inserted. This neck 2 also conventionally comprises an annular return 22 directed towards the push button 4 and allowing the centering and the setting of the covering band 3. In addition to this return, and as previously announced, the neck 2 comprises according to the invention a peripheral skirt 24 connected to the periphery of the disc 21 and extending in a direction opposite to the annular return 22. The lip 12 of the ring 1 comes bearing against the internal wall of this peripheral skirt 24.

Tout comme dans le cas du mode de réalisation représenté en figure 1, l'étanchéité à l'air entre la tête de distribution et le réservoir n'est pas assurée par la bague 1 mais par la jupe périphérique 24 du col 2. Cette jupe 24 vient donc en appui étanche contre la paroi interne du réservoir.As in the case of the embodiment shown in figure 1 , the airtightness between the dispensing head and the reservoir is not ensured by the ring 1 but by the peripheral skirt 24 of the neck 2. This skirt 24 therefore bears tight against the internal wall of the reservoir.

La bague 1 quant à elle comporte toujours une calotte 11 d'allure tronconique, mais avec un angle nettement plus obtu, permettant une réduction conséquente de la hauteur de la bague 1. Ainsi l'encombrement de la bague 1 est réduit par rapport à l'art antérieur, ce qui permet de fabriquer des distributeurs plus compacts pour un volume de produit équivalent. La calotte 11 pourrait également être hémisphérique.The ring 1 for its part still comprises a cap 11 of frustoconical appearance, but with a distinctly more obtuse angle, allowing a consequent reduction in the height of the ring 1. Thus the size of the ring 1 is reduced compared to the prior art, which makes it possible to manufacture more compact dispensers for an equivalent volume of product. The cap 11 could also be hemispherical.

La lèvre 12 d'étanchéité est dirigée parallèlement à l'axe central X de la bague 1. Cette lèvre 12 se raccorde au pourtour de la calotte 11 par une portion concave 15. La lèvre 12 vient au contact, par arcboutement, de la paroi interne de la jupe périphérique 24 du col 2. La lèvre 12 de la bague 1 de purge est ainsi logée dans la jupe 24 du col 2. Cette lèvre 12 est ainsi protégée en cas de conditionnement en vrac des têtes de distribution et leur étanchéité peut être vérifiée avant l'assemblage sur le réservoir. Le col 2 agit donc comme une pièce de protection pour la bague 1.The sealing lip 12 is directed parallel to the central axis X of the ring 1. This lip 12 is connected to the periphery of the cap 11 by a concave portion 15. The lip 12 comes into contact, by arching, with the wall. of the peripheral skirt 24 of the neck 2. The lip 12 of the purge ring 1 is thus housed in the skirt 24 of the neck 2. This lip 12 is thus protected in the event of bulk packaging of the dispensing heads and their sealing can be checked before assembly on the tank. The neck 2 therefore acts as a protective part for the ring 1.

Le fonctionnement de cette tête de distribution est illustré en figure 3. Lors du claquage de la tête sur le réservoir 6 au conditionnement (c'est-à-dire lors de l'assemblage du distributeur), la jupe 24 d'étanchéité du col 2 vient se loger dans le réservoir 6. La descente de cette tête dans le produit 7 provoque une légère surpression dans le réservoir 6 qui déforme élastiquement la lèvre 12 de la bague 1 de purge de manière à ce que l'air résiduel présent dans le réservoir 6 puisse passer entre la jupe 24 du col 2 et la lèvre 12 de la bague 1 pour s'échapper du réservoir 6. Cet air est alors contenu dans un espace prévu à cet effet entre la bague 1 et le col 2. Un léger débordement du produit 7 liquide dans ce même espace, après avoir chassé l'air par-dessus la lèvre 12 souple, permet d'assurer la purge complète de l'ensemble.The operation of this distribution head is illustrated in figure 3 . When the head is snapped onto the reservoir 6 during packaging (that is to say when assembling the dispenser), the sealing skirt 24 of the neck 2 is housed in the reservoir 6. The descent of this head in the product 7 causes a slight overpressure in the reservoir 6 which elastically deforms the lip 12 of the purge ring 1 so that the residual air present in the reservoir 6 can pass between the skirt 24 of the neck 2 and the lip 12 of the ring 1 to escape from the reservoir 6. This air is then contained in a space provided for this purpose between the ring 1 and the neck 2. A slight overflow of the liquid product 7 in this same space, after having expelled the air over the flexible lip 12, ensures complete bleeding of the assembly.

Ce réservoir 6 peut être flexible ou rigide, contenir un piston 8 (ou un autre système) ou non pour suivre la variabilité du volume de produit 7.This reservoir 6 can be flexible or rigid, contain a piston 8 (or another system) or not to follow the variability of the volume of product 7.

La figure 4 montre une seconde configuration possible du dispositif de purge d'air selon l'invention. Il se compose toujours d'une bague 1 de purge, et d'une pièce de protection consistant dans ce cas en un piston 8. Ce dispositif est destiné à être disposé non plus sur une tête de distributeur, donc en partie haute d'un distributeur, mais dans le fond du réservoir 6 du distributeur, donc en partie basse d'un distributeur. Le piston 8 se déplace du bas vers le haut du réservoir 6 afin de réduire le volume interne du réservoir 6 au fur et à mesure que le consommateur prélève du produit 7. Il assure par coulissement l'étanchéité statique et dynamique avec la paroi interne du réservoir 6.The figure 4 shows a second possible configuration of the air purge device according to the invention. It still consists of a purge ring 1, and a protective part consisting in this case of a piston 8. This device is intended to be no longer placed on a distributor head, therefore in the upper part of a distributor, but in the bottom of the reservoir 6 of the distributor, therefore in the lower part of a distributor. The piston 8 moves from the bottom to the top of the reservoir 6 in order to reduce the internal volume of the reservoir 6 as the consumer takes product 7. It ensures by sliding the static and dynamic seal with the internal wall of the tank 6.

La bague 1 est identique à celle décrite dans les figures 2 et 3, sauf en ce qui concerne la douille 13 axiale. Cette douille 13 comporte toujours un orifice central 14, mais qui n'est plus débouchant au niveau de la calotte 11, au contraire, car la bague 1 doit assurer l'étanchéité du réservoir 6 avec le piston 8 lorsque ce dernier remonte progressivement lors de l'utilisation du distributeur. La bague 1 et le piston 8 doivent donc présenter une surface totalement étanche par rapport au réservoir 6. La calotte 11 de la bague 1 est donc pleine, sans orifice.Ring 1 is identical to that described in the figures 2 and 3 , except as regards the axial sleeve 13. This sleeve 13 still has a central orifice 14, but which no longer opens out at the level of the cap 11, on the contrary, because the ring 1 must seal the reservoir 6 with the piston 8 when the latter gradually rises during the use of the dispenser. The ring 1 and the piston 8 must therefore have a completely sealed surface with respect to the reservoir 6. The cap 11 of the ring 1 is therefore solid, with no orifice.

La douille 13 présente au niveau de son extrémité libre un embout 16 permettant son emboîtement par déformation élastique dans le manchon du piston 8.The sleeve 13 has at its free end a tip 16 allowing it to be fitted by elastic deformation in the sleeve of the piston 8.

Le piston 8 quant à lui comporte un disque 81, de section circulaire ou ovale par exemple, pour s'adapter à la section du réservoir 6. Ce disque 81 est doté d'un orifice central à partir duquel s'étendent deux manchons 83,85.The piston 8 for its part comprises a disc 81, of circular or oval section for example, to adapt to the section of the reservoir 6. This disc 81 is provided with a central orifice from which two sleeves 83 extend, 85.

Un premier manchon 85 s'étend depuis la surface supérieure du disque 81, en direction de la bague 1, et accueille la douille 13 de la bague 1. Un second manchon 83 s'étend depuis la surface inférieure du disque 81, en direction du fond du réservoir 6 lorsque le piston 8 est monté dans le réservoir 6. L'orifice est débouchant dans les deux manchons 83,85. Le diamètre du premier manchon 85 est inférieur au diamètre du second manchon 83. Il existe donc un épaulement 80 au niveau de la jonction entre les deux manchons 83,85. L'embout 16 de la douille 13 de la bague 1 est retenu par cet épaulement 80 suite à son encliquetage dans le second manchon 83 du piston 8.A first sleeve 85 extends from the upper surface of the disc 81, in the direction of the ring 1, and accommodates the sleeve 13 of the ring 1. A second sleeve 83 extends from the lower surface of the disc 81, in the direction of the ring. bottom of the reservoir 6 when the piston 8 is mounted in the reservoir 6. The orifice opens out into the two sleeves 83,85. The diameter of the first sleeve 85 is less than the diameter of the second sleeve 83. There is therefore a shoulder 80 at the junction between the two sleeves 83, 85. The end piece 16 of the sleeve 13 of the ring 1 is retained by this shoulder 80 after it snaps into the second sleeve 83 of the piston 8.

Le piston 8 comporte également une première jupe périphérique 84 raccordée au pourtour externe du disque 81 et s'étendant en direction de la bague 1. La lèvre 12 de la bague 1 vient en appui contre la paroi interne de cette première jupe périphérique 84. La lèvre 12 est ainsi protégée dans le piston 8.The piston 8 also comprises a first peripheral skirt 84 connected to the outer periphery of the disc 81 and extending in the direction of the ring 1. The lip 12 of the ring 1 bears against the internal wall of this first peripheral skirt 84. The lip 12 is thus protected in piston 8.

Le piston 8 comporte une seconde jupe périphérique 82 raccordée au pourtour externe du disque 81 et s'étendant en direction du fond du réservoir 6 lorsque le piston 8 est monté dans le réservoir 6. Les extrémités libres des deux jupes 82,84 consistent en des lèvres 89,88 d'étanchéité, dont la fonction est d'assurer l'étanchéité du réservoir 6 lors de l'utilisation du distributeur. Ces lèvres 89,88 sont également fragiles, tout comme la lèvre 12 de la bague 1. Afin de les protéger lors de leur stockage, l'ensemble bague 1 de purge et piston 8 est fixé dans une pièce de fond 9 qui sera elle stockée en vrac puis conditionnée. Cette pièce de fond 9 protège les lèvres 89,88 du piston 8, comme cela est visible aux figures 5a et 5b. L'ensemble pièce de fond 9, bague 1 de purge et piston 8 est appelé dispositif d'obturation car il permet d'obturer un réservoir 6 qui n'a pas de fond. C'est ce type de réservoir 6 qui sera utilisé pour accommoder l'ensemble bague 1 de purge et piston 8 selon l'invention.The piston 8 comprises a second peripheral skirt 82 connected to the outer periphery of the disc 81 and extending in the direction of the bottom of the reservoir 6 when the piston 8 is mounted in the reservoir 6. The free ends of the two skirts 82,84 consist of sealing lips 89,88, the function of which is to seal the reservoir 6 when the dispenser is used. These lips 89,88 are also fragile, just like the lip 12 of the ring 1. In order to protect them during their storage, the purge ring 1 and piston 8 assembly is fixed in a bottom part 9 which will be stored. in bulk then packaged. This bottom part 9 protects the lips 89,88 of the piston 8, as can be seen in figures 5a and 5b . The bottom part 9, purge ring 1 and piston 8 assembly is called a sealing device because it enables a reservoir 6 which has no bottom to be closed. It is this type of reservoir 6 which will be used to accommodate the purge ring 1 and piston 8 assembly according to the invention.

Aux figures 5a et 5b, le dispositif d'obturation est renversé puisque l'assemblage du distributeur est réalisé avec la tête en bas, pour pouvoir verser le produit 7 dans le réservoir 6 par son fond ouvert.To the figures 5a and 5b , the closure device is reversed since the assembly of the dispenser is carried out with the head down, in order to be able to pour the product 7 into the reservoir 6 through its open bottom.

La pièce de fond 9 comporte :

  • un fond 91 doté d'un orifice central dans lequel vient s'emboîter le second manchon 83 du piston 8 ; ce fond 91 forme le fond du réservoir 6 et donc du distributeur.
  • un tronçon périphérique 92 ; ce tronçon est long 92a sur la figure 5a (variante a) et court 92b sur la figure 5b (variante b).
The bottom part 9 comprises:
  • a bottom 91 provided with a central orifice in which the second sleeve 83 of the piston 8 fits; this bottom 91 forms the bottom of the reservoir 6 and therefore of the distributor.
  • a peripheral section 92; this section is long 92a on the figure 5a (variant a) and runs 92b on the figure 5b (variant b).

Cette pièce de fond 9 coopère avec un réservoir 6, équipé d'une tête de distribution, comme illustré aux figures 6a et 6b.This bottom part 9 cooperates with a reservoir 6, equipped with a dispensing head, as illustrated in figures 6a and 6b .

Le réservoir 6 en figure 6a (variante a) comporte une zone d'emboitement 61 située à distance de son extrémité ouverte 62, de manière à ce que le tronçon long 92a de la pièce de fond 9 selon la figure 5a vienne s'y emboîter.The tank 6 in figure 6a (variant a) comprises an interlocking zone 61 located at a distance from its open end 62, so that the long section 92a of the bottom part 9 according to the figure 5a come and fit into it.

Le réservoir 6 en figure 6b (variante b) comporte une zone d'emboîtement 61 située relativement proche de son extrémité ouverte 62, de manière à ce que le tronçon court 92b de la pièce de fond 9 selon la figure 5b puisse s'y emboiter.The tank 6 in figure 6b (variant b) comprises an interlocking zone 61 situated relatively close to its open end 62, so that the short section 92b of the bottom part 9 according to the figure 5b can fit into it.

Il est donc possible de faire varier la longueur du tronçon périphérique 92 de la pièce de fond 9 en fonction de l'emplacement de la zone d'emboitement 61 sur le réservoir 6, et inversement.It is therefore possible to vary the length of the peripheral section 92 of the bottom part 9 as a function of the location of the interlocking zone 61 on the reservoir 6, and vice versa.

Voici le fonctionnement du dispositif d'obturation selon les deux variantes a et b.Here is the operation of the closure device according to the two variants a and b.

Figures 6a et 6b : le produit 7 à conditionner est versé dans le réservoir 6, comme illustré aux figures 6a et 6b. Figures 6a and 6b : the product 7 to be packaged is poured into tank 6, as illustrated in figures 6a and 6b .

Figures 7a et 7b : La pièce de fond 9 est ensuite positionnée au-dessus du réservoir 6 et centrée sur le réservoir 6, de manière à ce que la lèvre 88 de la première jupe 84 du piston 8 vienne au contact de la paroi interne du réservoir 6 de manière à l'étanchéifier. Au fur et à mesure du rapprochement de la pièce de fond 9 par rapport au réservoir 6, la pression d'air contenue dans le volume A augmente. Ce volume A correspond au volume d'air compris dans le réservoir 6 entre le produit 7 et la bague 1. Figures 7a and 7b : The bottom part 9 is then positioned above the reservoir 6 and centered on the reservoir 6, so that the lip 88 of the first skirt 84 of the piston 8 comes into contact with the internal wall of the reservoir 6 so that to seal it. As the bottom part 9 moves closer to the reservoir 6, the air pressure contained in the volume A increases. This volume A corresponds to the volume of air included in the reservoir 6 between the product 7 and the ring 1.

Figures 8a et 8b : La pièce de fond 9 poursuit son approche, jusqu'à s'emboîter sur le réservoir 6. La lèvre 89 de la seconde jupe 82 du piston 8 vient enfin au contact de la paroi interne du réservoir 6 de manière à finaliser l'étanchéité. Le volume d'air A est chassé dans la chambre B en déformant élastiquement la lèvre 12 de la bague 1 de purge. La chambre B correspond à l'espace défini entre la bague 1 et le piston 8. Figures 8a and 8b : The bottom part 9 continues its approach, until it engages on the reservoir 6. The lip 89 of the second skirt 82 of the piston 8 finally comes into contact with the internal wall of the reservoir 6 so as to finalize the seal . The volume of air A is expelled into the chamber B by elastically deforming the lip 12 of the purge ring 1. Chamber B corresponds to the space defined between ring 1 and piston 8.

Figures 9a et 9b : En appuyant sur le second manchon 83 du piston 8 saillant de la pièce de fond 9 de manière à faire rentrer entièrement le piston 8 au sein du réservoir 6, la fin du volume d'air A est chassé dans la chambre B par déformation de la lèvre 12 de la bague 1 de purge. Un léger volume de produit 7 est également chassé dans la chambre B pour assurer la purge complète. Le distributeur est alors conditionné sans air résiduel, et peut être repositionné à l'endroit. Le piston 8 (et la bague 1 qui y est fixée) pourra se déplacer ensuite progressivement vers la tête de distribution au fur et à mesure de la distribution du produit 7. Figures 9a and 9b : By pressing on the second sleeve 83 of the piston 8 projecting from the bottom part 9 so as to bring the piston 8 fully into the reservoir 6, the end of the volume of air A is expelled into the chamber B by deformation of the lip 12 of the bleed ring 1. A slight volume of product 7 is also expelled into chamber B to ensure complete purging. The dispenser is then conditioned without residual air, and can be repositioned upright. The piston 8 (and the ring 1 attached to it) can then move progressively towards the dispensing head as the product 7 is dispensed.

Le piston 8 est donc mobile par rapport à la pièce de fond 9 entre une position initiale sortie visible aux figures 5a à 8b, et une position finale rentrée visible aux figures 9a à 9b. La bague 1 reste fixe par rapport au piston 8.The piston 8 is therefore movable relative to the bottom part 9 between an initial extended position visible to the figures 5a to 8b , and a retracted final position visible to figures 9a to 9b . Ring 1 remains fixed relative to piston 8.

Les figures 10 à 12 présentent une troisième configuration possible du dispositif de purge. La pièce de fond 9, le piston 8 et la bague 1 sont identiques aux pièces décrites selon les figures 5a à 9b (deux variantes toujours possible), à quelques détails près comme expliqué ci-dessous.The figures 10 to 12 present a third possible configuration of the purge device. The bottom part 9, the piston 8 and the ring 1 are identical to the parts described according to figures 5a to 9b (two variants always possible), with a few details as explained below.

La première jupe 84 du piston 8 comporte des nervures 87 aménagées dans la paroi interne de la jupe 84, sur une hauteur démarrant au niveau de la jonction avec le disque 81 et s'arrêtant avant le démarrage de la lèvre 88 de la jupe 84. Cette zone rainurée 87 ne s'étend donc pas au niveau de la lèvre 88 de la première jupe 84.The first skirt 84 of the piston 8 comprises ribs 87 formed in the internal wall of the skirt 84, over a height starting at the junction with the disc 81 and stopping before the start of the lip 88 of the skirt 84. This grooved zone 87 therefore does not extend at the level of the lip 88 of the first skirt 84.

Le piston 8 comporte un seul manchon 83 se développant en direction de la pièce de fond 9, et venant s'insérer dans l'orifice de la pièce de fond 9.The piston 8 comprises a single sleeve 83 developing in the direction of the bottom part 9, and coming to fit into the orifice of the bottom part 9.

La bague 1 de purge comporte une douille 13 axiale rallongée, apte à s'insérer à l'intérieur du manchon 83 du piston 8. Cette douille 13 comporte également une zone rainurée 10 s'étendant sur toute sa longueur, sauf au niveau de son embout 16 d'extrémité.The purge ring 1 comprises an extended axial sleeve 13, able to be inserted inside the sleeve 83 of the piston 8. This sleeve 13 also comprises a grooved zone 10 extending over its entire length, except at its level. end cap 16.

La bague 1 de purge est mobile en translation par rapport au piston 8 entre :

  • une position sortie où la douille 13 traverse intégralement le manchon du piston 8 jusqu'à en saillir. Dans cette position, la lèvre 12 de la bague 1 de purge vient au contact de la zone rainurée 87 de la première jupe 84 du piston 8. Grâce aux zones rainurées 87 et 10, un filet d'air peut ainsi circuler entre la lèvre 12 de la bague 1 et la première jupe 84 du piston 8, ainsi qu'entre la douille 13 de la bague 1 et le manchon 83 du piston 8. L'air résiduel peut ainsi s'échapper vers l'extérieur.
  • une position rentrée où l'embout 16 d'extrémité de la douille 13 de la bague 1 n'est plus inséré dans le manchon 83 du piston 8, mais se situe au niveau du pourtour de l'orifice pratiqué dans le disque 81. Cet embout 16 possède un diamètre externe légèrement plus important que celui de la douille 13, et vient ainsi en appui étanche contre le disque 81 du piston 8. Plus aucun filet d'air ne peut alors circuler entre la douille 13 et le manchon 83.
The purge ring 1 is movable in translation relative to the piston 8 between:
  • an extended position where the sleeve 13 fully passes through the sleeve of the piston 8 until it protrudes. In this position, the lip 12 of the purge ring 1 comes into contact with the grooved zone 87 of the first skirt 84 of the piston 8. Thanks to the grooved zones 87 and 10, a stream of air can thus circulate between the lip 12 of the ring 1 and the first skirt 84 of the piston 8, as well as between the sleeve 13 of the ring 1 and the sleeve 83 of the piston 8. The residual air can thus escape to the outside.
  • a retracted position where the end piece 16 of the sleeve 13 of the ring 1 is no longer inserted into the sleeve 83 of the piston 8, but is located at the periphery of the orifice made in the disc 81. This end piece 16 has an external diameter slightly larger than that of sleeve 13, and thus bears tight against disc 81 of piston 8. No more air stream can then circulate between sleeve 13 and sleeve 83.

En figure 10, la pièce de fond 9 est positionnée au-dessus du réservoir 6 et centrée sur le réservoir 6, de manière à ce que la lèvre 88 de la première jupe 84 du piston 8 vienne au contact de la paroi interne du réservoir 6 de manière à l'étanchéifier. La bague 1 est en position sortie. Au fur et à mesure du rapprochement de la pièce de fond 9 par rapport au réservoir 6, la pression d'air contenue dans le volume A n'augmente pas et passe directement dans la chambre B via lesdites nervures 87 aménagées dans la première jupe 84 du piston 8, puis s'échappe vers l'extérieur en passant entre la douille 13 et le manchon 83 comme illustré par les flèches.In figure 10 , the bottom part 9 is positioned above the reservoir 6 and centered on the reservoir 6, so that the lip 88 of the first skirt 84 of the piston 8 comes into contact with the internal wall of the reservoir 6 so as to seal it. Ring 1 is in the extended position. As the bottom part 9 moves closer to the reservoir 6, the air pressure contained in the volume A does not increase and passes directly into the chamber B via said ribs 87 formed in the first skirt 84 piston 8, then escapes to the outside, passing between the sleeve 13 and the sleeve 83 as illustrated by the arrows.

En figure 11, la pièce de fond 9 poursuit son approche, jusqu'à s'emboîter sur le réservoir 6. La lèvre 89 de la seconde jupe 82 du piston 8 vient enfin au contact de la paroi interne du réservoir 6 de manière à finaliser l'étanchéité. Le volume d'air A est toujours chassé dans la chambre B via les nervures 87 aménagées dans la jupe 84 du piston 8, puis s'échappe vers l'extérieur via les nervures 10 aménagées dans la douille 13 de la bague 1.In figure 11 , the bottom part 9 continues its approach, until it fits over the reservoir 6. The lip 89 of the second skirt 82 of the piston 8 finally comes into contact with the internal wall of the reservoir 6 so as to finalize the seal . The volume of air A is always expelled into the chamber B via the ribs 87 formed in the skirt 84 of the piston 8, then escapes to the outside via the ribs 10 formed in the sleeve 13 of the ring 1.

En figure 12, suite à une pression manuelle exercée sur l'embout 16 d'extrémité de la douille 13 de la bague 1, cette dernière passe en position rentrée. La fin du volume d'air A est chassée par l'avancée de la bague 1 de purge au sein du réservoir 6. Un léger volume de produit 7 est également chassé dans la chambre B pour assurer la purge complète, par déformation élastique de la lèvre 12 de la bague 1 de purge. Le mouvement relatif entre la douille 13 de la bague 1 de purge et le manchon 83 du piston 8 ferme l'échappement d'air vers l'extérieur et la lèvre 12 de la bague 1 quitte la zone rainurée 87 de la jupe 84 du piston 8. Le distributeur est alors conditionné sans air résiduel.In figure 12 , following manual pressure exerted on the end piece 16 of the sleeve 13 of the ring 1, the latter passes into the retracted position. The end of the volume of air A is expelled by the advance of the purge ring 1 within the reservoir 6. A slight volume of product 7 is also expelled into the chamber B to ensure complete purging, by elastic deformation of the lip 12 of the bleed ring 1. The relative movement between the sleeve 13 of the bleed ring 1 and the sleeve 83 of the piston 8 closes the air exhaust to the outside and the lip 12 of the ring 1 leaves the grooved area 87 of the skirt 84 of the piston. 8. The dispenser is then conditioned without residual air.

Le manchon 83 du piston 8 étant ainsi libéré de la douille 13 de la bague 1, il se resserre de manière à se libérer de la pièce de fond 9. Pour se faire, la manchon 83 est naturellement échancré lorsqu'il n'est soumis à aucune contrainte. Le piston 8 se retrouve alors libre de translater par rapport au réservoir 6 afin de réguler le volume interne du réservoir 6 en fonction du prélèvement de produit 7 par le consommateur.The sleeve 83 of the piston 8 thus being released from the sleeve 13 of the ring 1, it tightens so as to free itself from the bottom part 9. To do this, the sleeve 83 is naturally notched when not subjected. to no constraints. The piston 8 is then free to translate relative to the reservoir 6 in order to regulate the internal volume of the reservoir 6 as a function of the withdrawal of product 7 by the consumer.

Dans cette configuration, la purge est donc réalisée sans surpression, ce qui permet d'optimiser la purge.In this configuration, the purge is therefore performed without overpressure, which makes it possible to optimize the purge.

La figure 13 illustre une quatrième configuration possible d'un dispositif de purge équipant un dispositif d'obturation. La pièce de fond 9, le piston 8 et la bague 1 sont identiques aux pièces décrites selon les figures 5a à 9b (deux variantes toujours possible), à quelques détails près comme expliqué ci-dessous.The figure 13 illustrates a fourth possible configuration of a purge device fitted to a closure device. The bottom part 9, the piston 8 and the ring 1 are identical to the parts described according to figures 5a to 9b (two variants always possible), with a few details as explained below.

Le piston 8 comporte toujours un double manchon 83,85, mais l'extrémité libre 87 du premier manchon 85 est désormais fermée. Par conséquent, l'orifice central est débouchant uniquement du côté du second manchon 83.The piston 8 still has a double sleeve 83, 85, but the free end 87 of the first sleeve 85 is now closed. Consequently, the central orifice opens out only on the side of the second sleeve 83.

Concernant la bague 1 de purge, la douille 13 et la lèvre 12 sont désormais inversés, c'est-à-dire positionnés l'un à la place de l'autre.Concerning the purge ring 1, the sleeve 13 and the lip 12 are now reversed, that is to say positioned one in place of the other.

Plus précisément, la douille 13 s'étend depuis le pourtour externe de la calotte 11 en direction du piston 8, tandis que la lèvre 12 s'étend depuis le pourtour de l'orifice interne 14 de la calotte 11 en direction du piston 8. La lèvre 12 vient toujours au contact d'une paroi interne du piston 8, mais il s'agit désormais de la paroi du premier manchon 85. La lèvre 12 entoure le premier manchon 85, et vient au contact de la paroi du manchon 85. La douille 13 vient au contact de la paroi interne de la première jupe 84 du piston 8 de manière étanche.More specifically, the sleeve 13 extends from the outer periphery of the cap 11 in the direction of the piston 8, while the lip 12 extends from the periphery of the internal orifice 14 of the cap 11 in the direction of the piston 8. The lip 12 still comes into contact with an internal wall of the piston 8, but it is now the wall of the first sleeve 85. The lip 12 surrounds the first sleeve 85, and comes into contact with the wall of the sleeve 85. The sleeve 13 comes into contact with the internal wall of the first skirt 84 of the piston 8 in a sealed manner.

Dans cette configuration, le volume d'air en A est toujours chassé dans la chambre B, par déformation de la lèvre 12 de la bague 1 de purge. Cependant, cet air circule désormais entre la lèvre 12 de la bague 1 de purge et le premier manchon 85 du piston 8, à la place de la première jupe 84 du piston 8. Le fonctionnement général est identique à celui décrit pour les figures 5a à 9b.In this configuration, the volume of air at A is always expelled into chamber B, by deformation of the lip 12 of the purge ring 1. However, this air now circulates between the lip 12 of the purge ring 1 and the first sleeve 85 of the piston 8, in place of the first skirt 84 of the piston 8. The general operation is identical to that described for the figures 5a to 9b .

En ce qui concerne la description ci-dessus, les relations dimensionnelles optimales pour les parties de l'invention, en incluant les variations de taille, de matériaux, de formes, de fonction et de modes de fonctionnement, d'assemblage et d'utilisation, sont considérées comme apparentes et évidentes pour l'homme du métier, et toutes les relations équivalentes à ce qui est illustré dans les dessins et ce qui est décrit dans le mémoire sont censées être incluses dans la présente invention pour autant qu'elles sont couvertes par les revendications annexées.With respect to the above description, the optimum dimensional relationships for parts of the invention, including variations in size, materials, shapes, function and modes of operation, assembly and use , are considered apparent and obvious to those skilled in the art, and all relations equivalent to what is illustrated in the drawings and what is described in the specification are intended to be included in the present invention as far as they are covered. by the appended claims.

Claims (15)

  1. Air purge device for an airless liquid product (7) dispenser comprising a container (6) equipped with means for sampling the product (7), said device comprising a bleed ring (1) that comprises a deformable lip seal (12) accommodated inside a protective part (2,8) designed to be inserted inside the container (6) and to ensure the sealing of said container (6), the deformation of the lip (12) when mounting the air purge device in the container (6) causing the air to be purged from the container (6), said protective part (2,8) is made up of a disc (21,81), a peripheral skirt seal (24,84) connected to the external edge of the disc (21,81) and an annular return (22) or a second skirt (82) extending in a direction opposite to said skirt seal (24,84).
  2. Air purge device according to claim 1, characterised in that the bleed ring (1) is provided with retention and wedging means cooperating with the protective part (2,8).
  3. Air purge device according to one of the preceding claims, characterised in that the bleed ring (1) comprises a cap (11) annularly extended by said lip seal (12).
  4. Air purge device according to the preceding claim, characterised in that said lip seal (12) connects to the edge of the cap (11) via a concave portion (15) and presses against an inner wall of the protective part (2,8), by buttressing.
  5. Air purge device according to the preceding claim, characterised in that said disc (21,81) is equipped with a central opening from which a central sleeve (23,83) extends, the peripheral lip seal (12) of the bleed ring (1) coming to bear against the wall of the central sleeve (23,83) or against the wall of said peripheral skirt seal (24,84) of the protective part (2,8).
  6. Air purge device according to one of the preceding claims, characterised in that the protective part consists of a neck (2) belonging to a dispensing head of the product (7) dispenser.
  7. Air purge device according to one of claims 1 to 5, characterised in that the protective part consists in a piston (8) belonging to the product (7) dispenser.
  8. Dispensing head of the airless liquid product (7) dispenser, comprising a pump (5) and an air purge device according to one of claims 1 to 6, the protective part consisting in a neck (2) clipped onto the pump (5), said retention and wedging means of the purge ring (1) consisting in an axial socket (13) inserted and wedged into the central sleeve (23) of the neck (2).
  9. Airless liquid product (7) dispenser comprising a container (6) and the dispensing head according to claim 8, the lip (12) of the bleed ring (1) being elastically deformed by overpressure when assembling the dispensing head on the container (6).
  10. Plugging device for the airless liquid product (7) dispenser comprising a container (6) equipped with means for sampling the product (7), said device including a base part (9) forming the base of the dispenser and being equipped with an air purge device according to one of claims 1 to 5 and 7, the protective part consisting in a piston (8) mounted on the base part (9).
  11. Plugging device according to the preceding claim, characterised in that the air purge device is translationally movable relative to the base part (9), between an initial extended position, from the moment it is packaged and until the plugging device is installed in the dispenser, and a final retracted position before the product is dispensed (7), the transition from the extended position to the retracted position causing the air to be purged from the dispenser by the deformation of the lip (12) of the bleed ring (1).
  12. Plugging device according to the preceding claim, characterised in that said retention and wedging means of the bleed ring (1) consisting in an axial socket (13) inserted and wedged into the central sleeve (83) of the piston (8), the ring (1) being movable relative to the piston (8) between an initial extended position, in which the axial socket (13) projects outwards from the base part (9) and a final retracted position, in which the axial socket (13) is located inside the base part (9), the transition from the extended position to the retracted position causing the air to be purged from the dispenser by the deformation of the lip (12) of the bleed ring (1).
  13. Plugging device according to one of claims 10 to 11, characterised in that the piston (8) comprises a first central sleeve (85) extending from an upper face of the disc (81) and cooperating with the bleed ring (1), and a second central sleeve (83) extending from a lower face of the disc (81) towards the base of the container (6) and being designed to be introduced into a central opening provided in the base part to this end (9).
  14. Plugging device according to the preceding claim, characterised in that the ring (1) is fixed relative to the piston (8), the piston (8) being movable between an initial extended position, in which the second central sleeve (83) projects outwards from the base part (9), and a final retracted position, in which the second central sleeve (83) is located inside the base part (9), the transition from the extended position to the retracted position causing the air to be purged from the dispenser by the deformation of the lip (12) of the bleed ring (1).
  15. Airless liquid product dispenser (7) comprising the container (6) equipped with the means for sampling the product (7) and the plugging device according to one of claims 10 to 14.
EP17150345.1A 2016-02-01 2017-01-05 Air-venting device for a liquid product dispenser with no air intake Active EP3199245B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1650785A FR3047186B1 (en) 2016-02-01 2016-02-01 AIR BLEEDING DEVICE FOR A LIQUID PRODUCT DISPENSER WITHOUT AIR INTAKE

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EP3199245A1 EP3199245A1 (en) 2017-08-02
EP3199245B1 true EP3199245B1 (en) 2020-08-26

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US (1) US10427181B2 (en)
EP (1) EP3199245B1 (en)
CN (1) CN107021292B (en)
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FR (1) FR3047186B1 (en)

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Publication number Publication date
CN107021292B (en) 2020-11-24
US20170216861A1 (en) 2017-08-03
EP3199245A1 (en) 2017-08-02
FR3047186B1 (en) 2020-02-14
CN107021292A (en) 2017-08-08
US10427181B2 (en) 2019-10-01
BR102017002015A2 (en) 2017-09-26
FR3047186A1 (en) 2017-08-04
BR102017002015B1 (en) 2022-07-26

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