EP2218515A1 - Spray dispenser comprising a one-way membrane valve - Google Patents

Spray dispenser comprising a one-way membrane valve Download PDF

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Publication number
EP2218515A1
EP2218515A1 EP10152538A EP10152538A EP2218515A1 EP 2218515 A1 EP2218515 A1 EP 2218515A1 EP 10152538 A EP10152538 A EP 10152538A EP 10152538 A EP10152538 A EP 10152538A EP 2218515 A1 EP2218515 A1 EP 2218515A1
Authority
EP
European Patent Office
Prior art keywords
membrane
support
sealing means
rigid
product
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.)
Granted
Application number
EP10152538A
Other languages
German (de)
French (fr)
Other versions
EP2218515B1 (en
Inventor
Xavier Donnette
José Camba
Gaëtan Painchaud
Sylvain Lanzi
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.)
Nemera la Verpilliere SAS
Original Assignee
Rexam Healthcare La Verpilliere SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP2218515A1 publication Critical patent/EP2218515A1/en
Application granted granted Critical
Publication of EP2218515B1 publication Critical patent/EP2218515B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/01—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
    • B05B11/1001—Piston pumps
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • B05B11/1066—Pump inlet valves
    • 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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • 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

Definitions

  • the present invention relates to the technical field of the delivery of liquid, semi-liquid, viscous or gaseous product, in particular in the medical field.
  • This device may comprise a pump, or another type of dispensing means comprising a non-return valve.
  • the device can be used in particular for nasal sprays, for dispensing ophthalmic liquid, or for inhalation of powder.
  • an elastic membrane forming a non-return valve is used which is attached to a support having a feed channel and serves as a seat configured so that the non-return valve is either pressed against the seat to block the liquid or remote from the seat. seat to let the liquid pass.
  • the membrane is slidably mounted in a pump metering chamber, in a sealed manner, to expel out of the chamber the product temporarily stored in the chamber.
  • the elastic membrane comprises a transverse wall, forming a non-return valve closing a supply orifice of the chamber, and a cylindrical skirt provided with one or two peripheral sealing lips, in sliding contact with the wall. internal of the dosing chamber.
  • the non-return valve portion can optimally take a product release configuration and a product blocking configuration.
  • this non-return valve portion so long as it is not subjected to depressions, is in sealing contact with a support to block the passage of product in one direction, and that as soon as it is subjected to a depression value as small as possible, allows the passage of product.
  • the non-return valve portion should be as accurate and dimensioned as possible.
  • the present invention aims to provide a membrane easy to achieve and reliably ensuring the sealing of the non-return valve.
  • the membrane has a position easier to control than in the case where the membrane is integrally made of a soft or soft material. Indeed, once the membrane assembled with other parts of the device, thanks to the more rigid part, the ribs associated with the assembly with the other parts will lead to closer tolerances. Thus, the membrane can satisfactorily perform its sealing functions of the non-return valve part and the sealing part of the metering chamber, thanks to the flexibility of the material of the first and second sealing means. , while having dimensions and precise positioning. In other words, the structure of the membrane is optimized, giving flexibility to the sealing zones, and rigidity to the zones which do not provide direct sealing, so as to control the dimensions and the position of the membrane during its assembly.
  • a membrane providing a non-return valve function it is particularly important for a membrane providing a non-return valve function to have precise dimensions and positioning. Indeed, to ensure the anti-return function, the membrane can be deformed against one or more feed orifices provided on the support, so as to be pressed against the support, and it is the force exerted by the membrane to resume its undeformed position which ensures the sealing of the valve. If the membrane is poorly positioned, or of imprecise dimensions, this force exerted by the membrane on the supply port is not sufficient or too important, or at least is poorly controlled in the context of industrial manufacturing, since this leads to very variable membrane opening pressures / depressions.
  • the rigid part makes it possible to better control the dimensions and the position of the membrane relative to the support, therefore the sealing force of the non-return valve, as well as the force exerted by the second sealing means against the wall. of the dosing chamber to ensure the tight sliding, and thus expel the product contained in the metering chamber.
  • the first sealing means form a non-return valve being able to take a liquid blocking configuration by cooperating with the support and a product release configuration, the blocking configuration of the product preventing the return of the product. inside a feed channel once this product has been released. It will be understood that, in the liquid blocking configuration, the first sealing means are pressed against the support, more precisely against the upper end of the support, forming a seat against which they are pressed by elastic return, and that in the configuration release of the product, the first sealing means are detached from this seat, by elastic deformation, under the effect of the pressure of the product, so as to create a passage space of the product.
  • the membrane is slidably mounted in the metering chamber between a rest position, also called low position, and an activated position, also called high position.
  • the dosing chamber thus defines a dosing volume corresponding to the difference between a volume of the chamber in the high position and a volume of the chamber in the low position, also called "dead volume".
  • the volume in the low position, or dead volume is substantially zero
  • the volume in the high position substantially corresponds to the volume of a delivered dose. Since the dead volume is not necessarily zero, the volume of the dosing chamber may be greater than the dosing volume.
  • the membrane may of course comprise other sealing means than the first and second means defined above.
  • the membrane may comprise third sealing means, sealing the membrane with respect to the membrane support. It will also be noted that the entire rigid portion, first and second, or even third, sealing means are integral in displacement, and therefore each slide in the metering chamber.
  • a device for delivering a liquid, semi-liquid, viscous or gaseous product comprises a pump 10, used for example for pharmaceutical nasal sprays.
  • This pump 10 is intended to be mounted on a reservoir (not shown) and is generally surmounted by a dispensing nozzle (not shown), on which the user presses.
  • the pump 10 comprises a first portion 12, said fixed portion, and a second portion 14, said movable portion or dispensing head, movable relative to the fixed portion 12 between a rest position, shown on the figure 2 , and an activated position, represented on the figure 1 .
  • the rest position corresponds to a so-called high position
  • the activated position to a so-called low position.
  • the fixed part 12 comprises a pump body 16, carrying a gripping tube 18, a piston 20 and a guide sleeve 22.
  • the tube 18 is connected to the reservoir, in order to draw product intended to pass through the pump.
  • the fixed part 12 comprises a fastening collar 24, for crimping the pump 10 on the tank. It is understood that the pump can also be mounted on the tank by screwing or snap.
  • the piston 20 comprises a support 26, fixedly mounted in the lower part of the pump body 16, traversed by a feed channel 28, arranged in the extension of the tube 18, and opening onto one or more feed orifices provided on the upper end 32 of the support.
  • the upper end 32 forms a seat for supporting first sealing means, as described below.
  • the support 26 has a generally tubular shape, having at its proximal end a tubular receiving housing of the tube 18 and at its distal end a tubular portion delimiting the channel 28 and extended by a seat 32 of support of Sealing means extending the channel 28.
  • the support 26 is attached to the pump body 16 by a transverse wall.
  • the support 26 is molded with the transverse wall and the pump body 16.
  • the support 26 is also capped, on its upper end 32, by a membrane 30, fixedly mounted on the support 26, around the tubular part delimiting the channel 28.
  • the membrane 30 comprises first sealing means 80, second sealing means 82 and a rigid portion 84.
  • the elements 80, 82, 84 can be obtained by co-injection, bi-injection, or overmolding.
  • the first 80 and second 82 sealing means are made of a flexible material, for example silicone or other elastomeric material or a polymer (for example, polyethylene, polypropylene, etc.).
  • the rigid portion 84 is made of a material that is more rigid than the material of the means 80, 82, for example of polymer (for example polypropylene, polyethylene, polyesters (such as polybutylene terephthalate (PBT), polyacetal, polyamide, etc.) or metal (eg stainless steel, etc.).
  • the membrane 30 is provided, in this example, with an upper transverse wall carrying the first means 80, and with a cylindrical skirt carrying the second means 82. As can be seen from FIG. figure 3 , the membrane defines an inner cavity fitted on the upper end 32 of the support 26. Furthermore, the membrane 30 has third sealing means 85, ensuring a permanent seal between the membrane 30 and the support 26. These third means are also made of a softer material than that of the rigid portion 84. More specifically, these third means are disposed within the cylindrical skirt of the membrane 30, between the first 80 and the second 82 sealing means. The means 85 prevent the passage of liquid in this zone between the support 26 and the membrane 30, so that the product contained in the internal cavity of the membrane, coming from the channel 28, can escape only through the anti-flow valve. return. Note that in this example, the membrane 30 is fitted on the support 26, but that other forms of assembly of these elements can be provided.
  • the first sealing means 80 form a non-return valve. They can take a liquid blocking configuration by being pressed against the support 26 and a release configuration of the product in which they deform elastically to let liquid from the channel 28 pass through. In their blocking configuration, the means 80 close off one or more feed orifices 86 formed on the support 26, preventing the return of the product inside the channel 28 once this product has been released.
  • the first sealing means take the form of one (or more) bead 80, made on the inner contour of one (or more) orifice 88 of liquid release, the orifice 88 being disposed here at center of the upper surface of the membrane. When they are in blocking configuration, the means 80 are pressed against the support 26 by elastic return.
  • the upper end 32 of the support 26 constitutes a support seat for the means 80.
  • This seat 32 is here in the form of a projecting element 32, of substantially cylindrical shape, carried by lugs coming in extension of the channel 28 and defining the orifices 86, so that the liquid from the channel 28 can pass on both sides of the legs, bypass the seat 32 and be blocked by the bead 80 pressed against the upper wall
  • the seat 32 is integrally molded with the support 26.
  • the means 80 deform so as to "loosen” from the upper surface of the seat 32 and thus create a space allowing the product to pass into a metering chamber 38.
  • the mobile part 14 of the pump comprises, in addition to the dispensing nozzle, a first cylinder 36, slidably mounted inside the pump body 16, and delimiting, with the piston 20, more precisely with the membrane 30, the chamber
  • the membrane 30 is slidably mounted in the first cylinder 36, therefore in the chamber 38.
  • the second sealing means 82 have one or more sealing lips 34, ensuring a leaktight sliding of the membrane 30 with respect to the metering chamber 38, in order to expel the product contained in the chamber 38.
  • the chamber 38 defines a dosing volume, corresponding to the difference between the volume of the chamber 38 in the high position and the volume of the chamber 38 in the low position. This dosing volume determines the dose of product delivered at each activation of the device.
  • the metering chamber 38 has a substantially zero volume, because the pump is in the activated position, the dose of product contained in the metering chamber has just been expelled.
  • the chamber 38 has a volume substantially equal to the volume of a dose of product.
  • the means 82 comprise two toric section lips.
  • the means 82 comprise two lips of angular section.
  • the rigid portion 84 is of revolution, it extends mainly in the cylindrical skirt of the membrane 30.
  • the rigid portion 84 has substantially the shape of a ring carrying, on its outer surface, the second means 82.
  • the rigid portion 84 comprises a base 90 bearing on the support 26, abutting against a shoulder 92 of the support to facilitate the precise assembly of the membrane 30.
  • the ring 84 is provided with a bearing surface 94 for an assembly tool. More specifically, this surface 94 takes the form of an upper flange 94, serving as a bearing surface for an assembly tool to easily press the membrane 30 against the support 26.
  • connection between this flange 94 and the remainder of the ring is perforated, so as to create a material bridge between the means 82 and the means 80 of the membrane, serving as mechanical catch for better holding the elements 80, 82 with the part Rigid 84.
  • a material bridge between the means 82 and the means 80 of the membrane serving as mechanical catch for better holding the elements 80, 82 with the part Rigid 84.
  • the dispensing head 14 further comprises a second cylinder 40, made in one piece with the first cylinder 36.
  • the cylinders 36 and 40 can be made of several parts.
  • a needle 42 is slidably mounted inside this second cylinder 40, between a rest position and an activated position, under the action of first return means 43, composed of a spring in compression.
  • the needle 42 is provided with a base 42a, sealingly mounted in the second cylinder 40, of a rod 42b, configured to be able to close, in the rest position of the pump, an orifice 44 formed on the lower end of the second cylinder 40, and an end 42c, projecting slightly inside the metering chamber 38 when the needle 42 is in the activated position.
  • This end 42c is configured to press the membrane 30 when the movable portion 14 is in the activated position, so as to ensure the opening of the orifice 44 in the priming phase of the device (so as to push the air of the metering chamber 38 towards the top of the device) and / or to close the supply orifice of the support 26.
  • the dispensing head 14 also comprises a support 46, fixedly mounted relative to the first 36 and second 40 cylinders, and delimiting a distribution chamber 48.
  • the support 46 could be made in one piece with the elements 36 and / or 40. It is generally on the support 46 that the dispensing nozzle of the device is mounted, the chamber 48 being connected to a dispensing nozzle provided on this nozzle. Note that the chamber 48 is not necessarily present on the support 46, it can provide only a connection of the support 46 and / or the cylinder 40 with the dispensing tip.
  • the support 46 of the head 14 is provided with an inner skirt 50 and an outer skirt 52, between which second return means 54 are housed.
  • the return means 54 are composed of a spring in compression, bearing on the one hand on the support 46, between the two skirts 50, 52, on the other hand on the fixed part 12, at the bottom of the sleeve 22. at the spring 54, the head 14, movable relative to the fixed part 12 between a rest position and an activated position, is held in the up position, as shown in FIG. figure 1 .
  • the support 46 Inside the inner skirt 50, the support 46 also has a seat for the first spring 43.
  • the support 46 further comprises means ensuring the passage of the liquid from the metering chamber 38 to the dispensing nozzle, specifically to the dispensing chamber 48, arranged in particular between the second cylinder 40 and the inner skirt 50, preferably so as to ensure the passage of liquid without this liquid being in contact with the return means 43 and 54.
  • the pump 10 also comprises means 56, 58 for abutment of the movable part 14 relative to the fixed part 12, to be forced past in order for the part 14 to move from its rest position to its activated position.
  • the means 56, 58 comprise in this example three stops 58 carried by the fixed part 12, and three stops 56, carried by the movable part 14 and deformable between an abutment configuration and an erasure configuration.
  • the means 56, 58 of abutment are permanent, and are intended to be crossed in force at each activation of the pump by the user. They are intended to force the user to exert minimal force on the moving part 14, in order to deliver complete doses, with a good quality spray, in particular from the point of view of the size and density of the particles.
  • the pump 10 Before the user delivers a dose of product, the pump 10 is in the rest position, or high position, represented on the figure 2 .
  • the rest position corresponds to a position in which the first cylinder 36, therefore the whole of the mobile part 14, is shifted upwards with respect to the fixed part 12, in particular with respect to the pump body 16.
  • the needle 42 is pressed against the lower end of the cylinder 40, under the action of the spring 43, the rod 42b cooperating with the orifice 44 so as to close this orifice.
  • the end 42c of the needle 42 is not in contact with the piston 20, the latter being at the bottom of the metering chamber 38.
  • the means 80 forming a non-return valve are here in configuration liquid blocking.
  • the movable portion 14 of the pump 10 When the user wishes to deliver a dose of product, he presses the movable portion 14 of the pump 10, possibly by pressing the dispensing tip. It thus exerts on the mobile part 14 a force schematized by the arrow 70 on the figure 1 , in order to activate the pump 10. Under the action of this support, the movable portion 14 begins to descend, until the abutment means 56, 58 are crossed in force.
  • the movable portion 14 continues its downward stroke, in accordance with the arrow 70.
  • the support 46 moving downwards, the first 36 and second 40 cylinders are also moved to the bottom, which has the effect of reducing the volume of the metering chamber 38, the membrane 30 sliding in the chamber 38. More specifically, the liquid contained in this chamber exerts an upward pressure on the needle 42, so that the rod 42b is displaced and no longer obturates the orifice 44. The liquid can thus escape from the chamber 38. Once the liquid has passed through the orifice 44, it flows between the second cylinder 40 and the inner skirt 50, and then passes into the distribution chamber 48, to be delivered out of the dispensing nozzle.
  • the liquid exerts a pressure on the needle 42 to raise it.
  • the end 42c of the needle in the low position presses on the membrane 30 so as to press against the upper end 32 of the support 26, and thus close the release orifice (s) 88.
  • the metering chamber 38 Once the metering chamber 38 reaches its volume in the low position, here substantially zero, that is to say once the dose of product has been dispensed, the user releases its support on the mobile part 14. Under the action of the spring 43, the needle 42 is again compressed against the bottom wall of the cylinder 40, so as to close the orifice 44. Moreover, under the effect of the spring 54, the movable portion 14 rises upwards in a direction opposite to the arrow 70, which slides the second cylinder 36 relative to the piston 20 in the direction opposite to the arrow 70. Thus, the metering chamber 38 increases in volume, so as to create a depression and aspirate the product through the grip tube 18. Specifically, the means 80 deform to take their liquid release configuration.
  • the movable portion 14 moves upward to the initial rest position. In this position, the metering chamber 38 is again filled with product, having an identical volume in the high position, and thus making it possible to deliver another dose, of identical volume to that just delivered.
  • the means 80 resume their liquid blocking position.
  • membrane-like membrane 30 may be used in a device other than a pump.
  • membrane 30 offers better control of the opening force of the orifice 88 of the membrane, thanks to the size and precise positioning.
  • the use of a bi-material membrane to form the non-return valve pressed against a seat 32 on which the membrane 30 is reported particularly reliably ensures the non-return function.

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  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The device has a pump including a piston with a tubular support (26) traversed by a supply channel (28). The piston has a membrane (30) slidably mounted in a dosage chamber. The membrane has a sealing unit (80) i.e. flange, that forms a non-return valve and takes a liquid blocking configuration by being placed against the support. Another sealing unit (82) assures sealable sliding of the membrane with respect to the chamber. The units are made of flexible material. The membrane has a rigid part (84) i.e. ring, made of material having rigidity greater than that of the material of the units.

Description

La présente invention concerne le domaine technique de la délivrance de produit liquide, semi-liquide, visqueux ou gazeux, notamment dans le domaine médical. Ce dispositif peut comprendre une pompe, ou un autre type de moyen de distribution comportant une valve anti-retour. Le dispositif peut être utilisé en particulier pour des pulvérisations nasales, pour la distribution de liquide ophtalmique, ou encore pour l'inhalation de poudre.The present invention relates to the technical field of the delivery of liquid, semi-liquid, viscous or gaseous product, in particular in the medical field. This device may comprise a pump, or another type of dispensing means comprising a non-return valve. The device can be used in particular for nasal sprays, for dispensing ophthalmic liquid, or for inhalation of powder.

Selon un exemple de pompe décrit dans le document FR 2 885 890 , on utilise une membrane élastique formant une valve anti-retour, rapportée sur un support traversé par un canal d'alimentation et servant de siège configuré de sorte que la valve anti-retour est soit plaquée contre le siège pour bloquer le liquide soit distante du siège pour laisser passer le liquide. La membrane est montée coulissante dans une chambre de dosage de la pompe, de façon étanche, pour expulser hors de la chambre du produit stocké temporairement dans la chambre. A cet effet, la membrane élastique comprend une paroi transversale, formant une valve anti-retour obturant un orifice d'alimentation de la chambre, et une jupe cylindrique pourvue d'une ou deux lèvres périphériques d'étanchéité, en contact coulissant avec la paroi interne de la chambre de dosage.According to an example of a pump described in the document FR 2,885,890 an elastic membrane forming a non-return valve is used which is attached to a support having a feed channel and serves as a seat configured so that the non-return valve is either pressed against the seat to block the liquid or remote from the seat. seat to let the liquid pass. The membrane is slidably mounted in a pump metering chamber, in a sealed manner, to expel out of the chamber the product temporarily stored in the chamber. For this purpose, the elastic membrane comprises a transverse wall, forming a non-return valve closing a supply orifice of the chamber, and a cylindrical skirt provided with one or two peripheral sealing lips, in sliding contact with the wall. internal of the dosing chamber.

Il se trouve que la réalisation et l'assemblage de cette membrane élastique peuvent être délicats à mettre en oeuvre. En effet, il est important que la partie formant valve anti-retour puisse prendre de façon optimale une configuration de libération de produit et une configuration de blocage de produit. En d'autres termes, il est important que cette partie formant valve anti-retour, tant qu'elle n'est pas soumise à des dépressions, soit en contact étanche avec un support pour bloquer le passage de produit dans un sens, et que, dès qu'elle est soumise à une valeur de dépression aussi petite que possible, autorise le passage de produit. Aussi, la partie formant valve anti-retour doit présenter des dimensions et une position aussi précises que possible.It turns out that the production and assembly of this elastic membrane can be difficult to implement. Indeed, it is important that the non-return valve portion can optimally take a product release configuration and a product blocking configuration. In other words, it is important that this non-return valve portion, so long as it is not subjected to depressions, is in sealing contact with a support to block the passage of product in one direction, and that as soon as it is subjected to a depression value as small as possible, allows the passage of product. Also, the non-return valve portion should be as accurate and dimensioned as possible.

La présente invention vise notamment à fournir une membrane facile à réaliser et assurant de façon fiable l'étanchéité de la valve anti-retour.The present invention aims to provide a membrane easy to achieve and reliably ensuring the sealing of the non-return valve.

A cet effet, l'invention a pour objet un dispositif pour la délivrance d'un produit, comportant une membrane montée coulissante dans une chambre de dosage, la membrane comprenant :

  • des premiers moyens d'étanchéité, formant valve anti-retour,
  • des deuxièmes moyens d'étanchéité, assurant un coulissement étanche de la membrane par rapport à la chambre de dosage,
les premiers et deuxièmes moyens d'étanchéité étant réalisés dans un matériau relativement souple, la membrane comprenant en outre une partie rigide, réalisée dans un matériau plus rigide que le matériau des premiers et deuxièmes moyens d'étanchéité. Plus précisément, le dispositif comporte un piston comprenant un support et la membrane, le support étant traversé par un canal d'alimentation débouchant sur un ou plusieurs orifices d'alimentation prévus sur l'extrémité supérieure du support. En outre, les premiers moyens d'étanchéité formant valve anti-retour peuvent prendre une configuration de blocage du liquide en étant plaqués contre le support.For this purpose, the subject of the invention is a device for dispensing a product, comprising a diaphragm slidably mounted in a metering chamber, the membrane comprising:
  • first sealing means, forming a non-return valve,
  • second sealing means, ensuring a tight sliding of the membrane relative to the metering chamber,
the first and second sealing means being made of a relatively flexible material, the membrane further comprising a rigid portion made of a material more rigid than the material of the first and second sealing means. More specifically, the device comprises a piston comprising a support and the membrane, the support being traversed by a feed channel opening on one or more feed orifices provided on the upper end of the support. In addition, the first sealing means forming a non-return valve can take a blocking configuration of the liquid by being pressed against the support.

Grâce à la partie rigide, la membrane présente une position plus facile à contrôler que dans le cas où la membrane est intégralement réalisée dans un matériau souple ou mou. En effet, une fois la membrane assemblée avec d'autres pièces du dispositif, grâce à la partie plus rigide, les côtes liées à l'assemblage avec les autres pièces conduiront à des tolérances plus étroites. Ainsi, la membrane peut assurer de façon satisfaisante ses fonctions d'étanchéité de la partie formant valve anti-retour et de la partie assurant l'étanchéité de la chambre de dosage, grâce à la souplesse du matériau des premiers et deuxièmes moyens d'étanchéité, tout en présentant des dimensions et un positionnement précis. En d'autres termes, on optimise la structure de la membrane, en donnant de la souplesse aux zones assurant l'étanchéité, et de la rigidité aux zones n'assurant pas directement l'étanchéité, de façon à maîtriser plus facilement les dimensions et la position de la membrane lors de son assemblage. On notera qu'il est particulièrement important, pour une membrane assurant une fonction de valve anti-retour, d'avoir des dimensions et un positionnement précis. En effet, pour assurer la fonction anti-retour, la membrane peut être déformée contre un ou plusieurs orifices d'alimentation prévus sur le support, de façon à être plaquée contre le support, et c'est la force exercée par la membrane pour reprendre sa position non déformée qui assure l'étanchéité de la valve. Si la membrane est mal positionnée, ou de dimensions peu précises, cette force exercée par la membrane sur l'orifice d'alimentation n'est pas suffisante ou trop importante, ou du moins est mal maîtrisée dans le cadre d'une fabrication industrielle, puisque cela conduit à de pressions/dépressions d'ouverture de membrane très variables. Aussi, la partie rigide permet de maîtriser davantage les dimensions et la position de la membrane par rapport au support, donc la force de fermeture étanche de la valve anti-retour, ainsi que la force exercée par les deuxièmes moyens d'étanchéité contre la paroi de la chambre de dosage pour assurer le coulissement étanche, et ainsi expulser du produit contenu dans la chambre de dosage.Thanks to the rigid part, the membrane has a position easier to control than in the case where the membrane is integrally made of a soft or soft material. Indeed, once the membrane assembled with other parts of the device, thanks to the more rigid part, the ribs associated with the assembly with the other parts will lead to closer tolerances. Thus, the membrane can satisfactorily perform its sealing functions of the non-return valve part and the sealing part of the metering chamber, thanks to the flexibility of the material of the first and second sealing means. , while having dimensions and precise positioning. In other words, the structure of the membrane is optimized, giving flexibility to the sealing zones, and rigidity to the zones which do not provide direct sealing, so as to control the dimensions and the position of the membrane during its assembly. It will be noted that it is particularly important for a membrane providing a non-return valve function to have precise dimensions and positioning. Indeed, to ensure the anti-return function, the membrane can be deformed against one or more feed orifices provided on the support, so as to be pressed against the support, and it is the force exerted by the membrane to resume its undeformed position which ensures the sealing of the valve. If the membrane is poorly positioned, or of imprecise dimensions, this force exerted by the membrane on the supply port is not sufficient or too important, or at least is poorly controlled in the context of industrial manufacturing, since this leads to very variable membrane opening pressures / depressions. Also, the rigid part makes it possible to better control the dimensions and the position of the membrane relative to the support, therefore the sealing force of the non-return valve, as well as the force exerted by the second sealing means against the wall. of the dosing chamber to ensure the tight sliding, and thus expel the product contained in the metering chamber.

On notera que les premiers moyens d'étanchéité forment une valve anti-retour en étant capable de prendre une configuration de blocage du liquide en coopérant avec le support et une configuration de libération du produit, la configuration de blocage du produit empêchant le retour du produit à l'intérieur d'un canal d'alimentation une fois que ce produit a été libéré. On comprend que, en configuration de blocage du liquide, les premiers moyens d'étanchéité sont plaqués contre le support, plus précisément contre l'extrémité supérieure du support, formant un siège contre lequel ils sont plaqués par retour élastique, et qu'en configuration de libération du produit, les premiers moyens d'étanchéité se détachent de ce siège, par déformation élastique, sous l'effet de la pression du produit, de façon à créer un espace de passage du produit. On notera par ailleurs que la membrane est montée coulissante dans la chambre de dosage entre une position de repos, appelée aussi position basse, et une position activée, appelée aussi position haute. La chambre de dosage définit ainsi un volume de dosage, correspondant à la différence entre un volume de la chambre en position haute et un volume de la chambre en position basse, également appelé "volume mort". Par exemple, le volume en position basse, ou volume mort, est sensiblement nul, et le volume en position haute correspond sensiblement au volume d'une dose délivrée. Comme le volume mort n'est pas forcément nul, le volume de la chambre de dosage peut être supérieur au volume de dosage. Par ailleurs, la membrane peut bien sûr comporter d'autres moyens d'étanchéité que les premiers et deuxièmes moyens définis plus haut. En particulier, la membrane peut comprendre des troisièmes moyens d'étanchéité, assurant l'étanchéité de la membrane par rapport au support de membrane. On notera également que l'ensemble de la partie rigide, des premiers et deuxièmes, voire des troisièmes, moyens d'étanchéité sont solidaires en déplacement, et coulissent donc chacun dans la chambre de dosage.It should be noted that the first sealing means form a non-return valve being able to take a liquid blocking configuration by cooperating with the support and a product release configuration, the blocking configuration of the product preventing the return of the product. inside a feed channel once this product has been released. It will be understood that, in the liquid blocking configuration, the first sealing means are pressed against the support, more precisely against the upper end of the support, forming a seat against which they are pressed by elastic return, and that in the configuration release of the product, the first sealing means are detached from this seat, by elastic deformation, under the effect of the pressure of the product, so as to create a passage space of the product. Note also that the membrane is slidably mounted in the metering chamber between a rest position, also called low position, and an activated position, also called high position. The dosing chamber thus defines a dosing volume corresponding to the difference between a volume of the chamber in the high position and a volume of the chamber in the low position, also called "dead volume". For example, the volume in the low position, or dead volume, is substantially zero, and the volume in the high position substantially corresponds to the volume of a delivered dose. Since the dead volume is not necessarily zero, the volume of the dosing chamber may be greater than the dosing volume. Moreover, the membrane may of course comprise other sealing means than the first and second means defined above. In particular, the membrane may comprise third sealing means, sealing the membrane with respect to the membrane support. It will also be noted that the entire rigid portion, first and second, or even third, sealing means are integral in displacement, and therefore each slide in the metering chamber.

Le dispositif peut en outre comporter l'une ou plusieurs des caractéristiques suivantes.

  • La partie rigide, les premiers et deuxièmes moyens d'étanchéité sont obtenus par co-injection, bi-injection, surmoulage. D'autres procédés pour assembler ensemble les deux ou trois différents matériaux peuvent néanmoins être utilisés.
  • La partie rigide est réalisée dans un matériau choisi parmi un polymère, par exemple du polypropylène, du polyéthylène, du polyesther (tel que du poly-butylène-téréphtalate (PBT)), du polyacétal, du polyamide, ou un métal, par exemple de l'acier inoxydable. Par ailleurs, les premiers ou deuxièmes moyens d'étanchéité peuvent être réalisés en silicone, dans un autre matériau élastomère ou dans un polymère, par exemple du polyéthylène ou du polypropylene. On notera que, quels soient les matériaux utilisés pour ces différents éléments, le matériau de la partie rigide est plus rigide que le matériau des premiers et deuxièmes moyens d'étanchéité.
  • La partie rigide a sensiblement la forme d'une bague. Ainsi, la partie rigide forme un tronc cylindrique, structure relativement rigide pour assurer la maîtrise des cotes et des contraintes exercées sur la membrane.
  • Les deuxièmes moyens d'étanchéité comprennent au moins une lèvre de révolution, de préférence deux lèvres. Parmi beaucoup de formes possible, la section de cette lèvre peut être torique, formant sensiblement un demi-disque. La section peut également être angulaire.
  • La membrane comprend une paroi transversale, portant les premiers moyens d'étanchéité, et une jupe cylindrique, portant les deuxièmes moyens d'étanchéité, la partie rigide s'étendant principalement dans cette jupe cylindrique.
  • La membrane est assemblée sur le support et comprend un socle d'appui sur ce support, le socle d'appui faisant partie de la partie rigide de la membrane. Ainsi, le socle d'appui étant réalisé dans un matériau rigide, on garantit que la position en butée de la membrane sur le support ne va pas se faire par écrasement d'une partie souple de la membrane contre le support, et donc que les cotes d'assemblage de la membrane sur le support seront mieux maîtrisées. Ainsi, grâce à ce socle d'appui, on propose un assemblage dans lequel la position de la membrane et du support se fait par l'intermédiaire de deux surfaces rigides et non pas par l'intermédiaire d'une surface rigide et d'une surface souple, donc plus déformable. On notera que dans le cas de l'assemblage de la membrane avec le support, on prévoit de préférence des troisièmes moyens d'étanchéité, assurant l'étanchéité de la membrane par rapport au support de membrane.
  • La partie rigide comprend une surface d'appui pour un outil d'assemblage de la membrane dans le dispositif. Ainsi, grâce à cette surface rigide contre laquelle on peut exercer un effort de poussée, l'assemblage est facilité.
  • Le dispositif comprend des troisièmes moyens d'étanchéité, assurant une étanchéité permanente entre la membrane et un support de membrane.
  • La membrane est utilisée dans une pompe. Plus précisément, la membrane forme, avec le support, un piston monté coulissant dans un cylindre de la pompe, de façon à définir la chambre de dosage. Cette chambre de dosage est alimentée en produit par l'intermédiaire de la valve anti-retour, laquelle peut faire passer du liquide contenu dans le réservoir du dispositif.
  • La membrane est rapportée sur le support et le support comprend un siège d'appui des premiers moyens d'étanchéité qui sont plaqués contre le siège lorsqu'ils sont en configuration de blocage et qui en sont espacés lorsqu'ils sont en configuration de libération de produit. Ainsi la partie rigide de la membrane permet des dimensions et une position plus fiable de la membrane par rapport au support, donc une meilleure étanchéité de la fonction anti-retour.
  • Le support comprend une partie tubulaire délimitant le canal d'alimentation et la membrane comprend une jupe cylindrique montée fixe autour de cette partie tubulaire.
  • Le siège est venu de moulage avec le support.
The device may further include one or more of the following features.
  • The rigid part, the first and second sealing means are obtained by co-injection, bi-injection, overmolding. Other methods for assembling together the two or three different materials can nevertheless be used.
  • The rigid portion is made of a material chosen from a polymer, for example polypropylene, polyethylene, polyesters (such as polybutylene terephthalate (PBT)), polyacetal, polyamide, or a metal, for example stainless steel. Furthermore, the first or second sealing means may be made of silicone, other elastomeric material or a polymer, for example polyethylene or polypropylene. It will be noted that, whatever the materials used for these different elements, the material of the rigid part is more rigid than the material of the first and second sealing means.
  • The rigid portion has substantially the shape of a ring. Thus, the rigid portion forms a cylindrical trunk, relatively rigid structure to ensure control of dimensions and stresses exerted on the membrane.
  • The second sealing means comprise at least one lip of revolution, preferably two lips. Among many possible forms, the section of this lip may be toric, forming substantially a half-disk. The section can also be angular.
  • The membrane comprises a transverse wall, carrying the first sealing means, and a cylindrical skirt, carrying the second sealing means, the rigid portion extending mainly in this cylindrical skirt.
  • The membrane is assembled on the support and comprises a support base on this support, the support base forming part of the rigid part of the membrane. Thus, the support base being made of a rigid material, it is ensured that the position in abutment of the membrane on the support is not going to be by crushing a flexible portion of the membrane against the support, and therefore that the assembly dimensions of the membrane on the support will be better controlled. Thus, thanks to this support base, there is proposed an assembly in which the position of the membrane and the support is via two rigid surfaces and not via a rigid surface and a flexible surface, so more deformable. It will be noted that in the case of assembling the membrane with the support, third sealing means are preferably provided, sealing the membrane with respect to the membrane support.
  • The rigid portion comprises a bearing surface for a tool for assembling the membrane in the device. Thus, thanks to this rigid surface against which it can exert a thrust force, assembly is facilitated.
  • The device comprises third sealing means, providing a permanent seal between the membrane and a membrane support.
  • The membrane is used in a pump. More specifically, the membrane forms, with the support, a piston slidably mounted in a cylinder of the pump, so as to define the dosing chamber. This metering chamber is supplied with product via the non-return valve, which can pass liquid contained in the tank of the device.
  • The membrane is attached to the support and the support comprises a support seat of the first sealing means which are pressed against the seat when they are in blocking configuration and which are spaced apart when they are in the release configuration. product. Thus the rigid portion of the membrane allows dimensions and a more reliable position of the membrane relative to the support, so a better seal of the anti-return function.
  • The support comprises a tubular portion defining the supply channel and the membrane comprises a cylindrical skirt mounted fixed around this tubular portion.
  • The seat came molding with the backing.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins dans lesquels :

  • la figure 1 est une vue en coupe d'un dispositif pour la délivrance d'un produit selon un mode de réalisation, le dispositif étant en position activée ;
  • la figure 2 est une vue similaire à la figure 1, le dispositif étant en position de repos ;
  • la figure 3 est une vue agrandie d'une partie du dispositif de la figure 2 ; et
  • la figure 4 est une vue agrandie de deuxièmes moyens d'étanchéité de la membrane illustrée sur la figure 1, selon une variante de réalisation.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the drawings in which:
  • the figure 1 is a sectional view of a device for delivering a product according to an embodiment, the device being in the activated position;
  • the figure 2 is a view similar to the figure 1 the device being in the rest position;
  • the figure 3 is an enlarged view of part of the device of the figure 2 ; and
  • the figure 4 is an enlarged view of second sealing means of the membrane illustrated on the figure 1 , according to an alternative embodiment.

Comme on peut le voir sur la figure 1, un dispositif pour la délivrance d'un produit liquide, semi-liquide, visqueux ou gazeux comprend une pompe 10, utilisée par exemple pour des pulvérisations nasales de produit pharmaceutique. Cette pompe 10 est destinée à être montée sur un réservoir (non représenté) et est généralement surmontée d'un embout de distribution (non représenté), sur lequel l'utilisateur appuie.As can be seen on the figure 1 , a device for delivering a liquid, semi-liquid, viscous or gaseous product comprises a pump 10, used for example for pharmaceutical nasal sprays. This pump 10 is intended to be mounted on a reservoir (not shown) and is generally surmounted by a dispensing nozzle (not shown), on which the user presses.

La pompe 10 comprend une première partie 12, dite partie fixe, et une seconde partie 14, dite partie mobile ou tête de distribution, mobile par rapport à la partie fixe 12 entre une position de repos, représentée sur la figure 2, et une position activée, représentée sur la figure 1. Ici, la position de repos correspond à une position dite haute, et la position activée à une position dite basse.The pump 10 comprises a first portion 12, said fixed portion, and a second portion 14, said movable portion or dispensing head, movable relative to the fixed portion 12 between a rest position, shown on the figure 2 , and an activated position, represented on the figure 1 . Here, the rest position corresponds to a so-called high position, and the activated position to a so-called low position.

Dans cet exemple, la partie fixe 12 comprend un corps de pompe 16, portant un tube de prise 18, un piston 20 et un manchon de guidage 22. Le tube 18 est relié au réservoir, afin de puiser du produit destiné à passer dans la pompe. Par ailleurs, la partie fixe 12 comprend un collier de fixation 24, permettant de sertir la pompe 10 sur le réservoir. On comprend que la pompe peut également être montée sur le réservoir par vissage ou encore par encliquetage.In this example, the fixed part 12 comprises a pump body 16, carrying a gripping tube 18, a piston 20 and a guide sleeve 22. The tube 18 is connected to the reservoir, in order to draw product intended to pass through the pump. Furthermore, the fixed part 12 comprises a fastening collar 24, for crimping the pump 10 on the tank. It is understood that the pump can also be mounted on the tank by screwing or snap.

Le piston 20 comprend un support 26, monté fixe dans la partie inférieure du corps de pompe 16, traversé par un canal d'alimentation 28, agencé dans le prolongement du tube 18, et débouchant sur un ou plusieurs orifices d'alimentation prévus sur l'extrémité supérieure 32 du support. L'extrémité supérieure 32 forme un siège d'appui de premiers moyens d'étanchéité, comme cela est décrit dans la suite. Dans cet exemple, le support 26 a une forme globalement tubulaire, présentant à son extrémité proximale un logement tubulaire de réception du tube 18 et à son une extrémité distale une partie tubulaire délimitant le canal 28 et prolongée par un un siège 32 d'appui de moyens d'étanchéité prolongeant le canal 28. On notera en outre que le support 26 est rattaché au corps de pompe 16 par une paroi transversale. Dans cet exemple, le support 26 est venu de moulage avec la paroi transversale et le corps de pompe 16. Le support 26 est par ailleurs coiffé, sur son extrémité supérieure 32, par une membrane 30, montée fixe sur le support 26, autour de la partie tubulaire délimitant le canal 28.The piston 20 comprises a support 26, fixedly mounted in the lower part of the pump body 16, traversed by a feed channel 28, arranged in the extension of the tube 18, and opening onto one or more feed orifices provided on the upper end 32 of the support. The upper end 32 forms a seat for supporting first sealing means, as described below. In this example, the support 26 has a generally tubular shape, having at its proximal end a tubular receiving housing of the tube 18 and at its distal end a tubular portion delimiting the channel 28 and extended by a seat 32 of support of Sealing means extending the channel 28. It will further be noted that the support 26 is attached to the pump body 16 by a transverse wall. In this example, the support 26 is molded with the transverse wall and the pump body 16. The support 26 is also capped, on its upper end 32, by a membrane 30, fixedly mounted on the support 26, around the tubular part delimiting the channel 28.

La membrane 30 comporte des premiers moyens d'étanchéité 80, des deuxièmes moyens d'étanchéité 82, ainsi qu'une partie rigide 84. Les éléments 80, 82, 84 peuvent être obtenus par co-injection, bi-injection, ou surmoulage. Les premiers 80 et deuxièmes 82 moyens d'étanchéité sont réalisés dans un matériau souple, par exemple en silicone ou dans un autre matériau élastomère ou dans un polymère (par exemple, du polyéthylène, du polypropylene, etc.). La partie rigide 84 est réalisée dans un matériau plus rigide que le matériau des moyens 80, 82, par exemple en polymère (par exemple du polypropylène, du polyéthylène, du polyesther (tel que du poly-butylène-téréphtalate (PBT),) du polyacétal, du polyamide, etc.) ou en métal (par exemple en acier inoxydable, etc.). La membrane 30 est pourvue, dans cet exemple, d'une paroi transversale supérieure portant les premiers moyens 80, et d'une jupe cylindrique portant les seconds moyens 82. Comme on peut le voir sur la figure 3, la membrane définit une cavité intérieure emmanchée sur l'extrémité supérieure 32 du support 26. Par ailleurs, la membrane 30 comporte des troisièmes moyens d'étanchéité 85, assurant une étanchéité permanente entre la membrane 30 et le support 26. Ces troisièmes moyens sont également réalisés dans un matériau plus souple que celui de la partie rigide 84. Plus précisément, ces troisièmes moyens sont disposés à l'intérieur de la jupe cylindrique de la membrane 30, entre les premiers 80 et les seconds 82 moyens d'étanchéité. Les moyens 85 empêchent le passage de liquide dans cette zone entre le support 26 et la membrane 30, si bien que du produit contenu dans la cavité intérieure de la membrane, venant du canal 28, ne peut s'échapper que par la valve anti-retour. On notera que, dans cet exemple, la membrane 30 est emmanchée sur le support 26, mais que l'on peut prévoir d'autres formes d'assemblage de ces éléments.The membrane 30 comprises first sealing means 80, second sealing means 82 and a rigid portion 84. The elements 80, 82, 84 can be obtained by co-injection, bi-injection, or overmolding. The first 80 and second 82 sealing means are made of a flexible material, for example silicone or other elastomeric material or a polymer (for example, polyethylene, polypropylene, etc.). The rigid portion 84 is made of a material that is more rigid than the material of the means 80, 82, for example of polymer (for example polypropylene, polyethylene, polyesters (such as polybutylene terephthalate (PBT), polyacetal, polyamide, etc.) or metal (eg stainless steel, etc.). The membrane 30 is provided, in this example, with an upper transverse wall carrying the first means 80, and with a cylindrical skirt carrying the second means 82. As can be seen from FIG. figure 3 , the membrane defines an inner cavity fitted on the upper end 32 of the support 26. Furthermore, the membrane 30 has third sealing means 85, ensuring a permanent seal between the membrane 30 and the support 26. These third means are also made of a softer material than that of the rigid portion 84. More specifically, these third means are disposed within the cylindrical skirt of the membrane 30, between the first 80 and the second 82 sealing means. The means 85 prevent the passage of liquid in this zone between the support 26 and the membrane 30, so that the product contained in the internal cavity of the membrane, coming from the channel 28, can escape only through the anti-flow valve. return. Note that in this example, the membrane 30 is fitted on the support 26, but that other forms of assembly of these elements can be provided.

Les premiers moyens d'étanchéité 80 forment valve anti-retour. Ils peuvent prendre une configuration de blocage du liquide, en étant plaqués contre le support 26 et une configuration de libération du produit dans laquelle ils se déforment élastiquement pour laisser passer du liquide issu du canal 28. Dans leur configuration de blocage, les moyens 80 obturent un ou plusieurs orifices d'alimentation 86 ménagés sur le support 26, en empêchant le retour du produit à l'intérieur du canal 28 une fois que ce produit a été libéré. Dans cet exemple, les premiers moyens d'étanchéité prennent la forme d'un (ou plusieurs) bourrelet 80, réalisé sur le contour intérieur d'un (ou plusieurs) orifice 88 de libération du liquide, l'orifice 88 étant disposé ici au centre de la surface supérieure de la membrane. Lorsqu'ils sont en configuration de blocage, les moyens 80 sont plaqués contre le support 26 par retour élastique. Plus précisément, l'extrémité supérieure 32 du support 26 constitue une siège d'appui des moyens 80. Ce siège 32 se présente ici sous la forme d'un élément en saillie 32, de forme sensiblement cylindrique, porté par des pattes venant en prolongement du canal 28 et délimitant les orifices 86, de telle sorte que le liquide issu du canal 28 peut passer de part et d'autre des pattes, contourner le siège 32 et être bloqué par le bourrelet 80 plaqué contre la paroi supérieure du siège 32, De préférence, les siège 32 est venu de moulage avec le support 26. Lorsqu'ils sont en configuration de libération de produit, les moyens 80 se déforment de façon à se « décoller » de la surface supérieure du siège 32 et ainsi créer un espace permettant au produit de passer dans une chambre de dosage 38.The first sealing means 80 form a non-return valve. They can take a liquid blocking configuration by being pressed against the support 26 and a release configuration of the product in which they deform elastically to let liquid from the channel 28 pass through. In their blocking configuration, the means 80 close off one or more feed orifices 86 formed on the support 26, preventing the return of the product inside the channel 28 once this product has been released. In this example, the first sealing means take the form of one (or more) bead 80, made on the inner contour of one (or more) orifice 88 of liquid release, the orifice 88 being disposed here at center of the upper surface of the membrane. When they are in blocking configuration, the means 80 are pressed against the support 26 by elastic return. More specifically, the upper end 32 of the support 26 constitutes a support seat for the means 80. This seat 32 is here in the form of a projecting element 32, of substantially cylindrical shape, carried by lugs coming in extension of the channel 28 and defining the orifices 86, so that the liquid from the channel 28 can pass on both sides of the legs, bypass the seat 32 and be blocked by the bead 80 pressed against the upper wall Preferably, the seat 32 is integrally molded with the support 26. When in the product release configuration, the means 80 deform so as to "loosen" from the upper surface of the seat 32 and thus create a space allowing the product to pass into a metering chamber 38.

La partie mobile 14 de la pompe comprend, outre l'embout de distribution, un premier cylindre 36, monté coulissant à l'intérieur du corps de pompe 16, et délimitant, avec le piston 20, plus précisément avec la membrane 30, la chambre de dosage 38. En d'autres termes, la membrane 30 est montée coulissante dans le premier cylindre 36, donc dans la chambre 38. A cet effet, les deuxièmes moyens d'étanchéité 82 présentent une ou plusieurs lèvres d'étanchéité 34, assurant un coulissement étanche de la membrane 30 par rapport à la chambre de dosage 38, afin d'expulser du produit contenu dans la chambre 38. Ainsi, la chambre 38 définit un volume de dosage, correspondant à la différence entre le volume de la chambre 38 en position haute et le volume de la chambre 38 en position basse. Ce volume de dosage détermine la dose de produit délivré à chaque activation du dispositif. Sur la figure 1, la chambre de dosage 38 a un volume sensiblement nul, du fait que la pompe est en position activée, la dose de produit contenu dans la chambre de dosage venant d'être expulsée. Sur la figure 2, la chambre 38 a un volume sensiblement égal au volume d'une dose de produit. Dans l'exemple de la figure 3, les moyens 82 comprennent deux lèvres de section torique. Dans la variante de réalisation illustrée sur la figure 4, les moyens 82 comprennent deux lèvres de section angulaire.The mobile part 14 of the pump comprises, in addition to the dispensing nozzle, a first cylinder 36, slidably mounted inside the pump body 16, and delimiting, with the piston 20, more precisely with the membrane 30, the chamber In other words, the membrane 30 is slidably mounted in the first cylinder 36, therefore in the chamber 38. For this purpose, the second sealing means 82 have one or more sealing lips 34, ensuring a leaktight sliding of the membrane 30 with respect to the metering chamber 38, in order to expel the product contained in the chamber 38. Thus, the chamber 38 defines a dosing volume, corresponding to the difference between the volume of the chamber 38 in the high position and the volume of the chamber 38 in the low position. This dosing volume determines the dose of product delivered at each activation of the device. On the figure 1 , the metering chamber 38 has a substantially zero volume, because the pump is in the activated position, the dose of product contained in the metering chamber has just been expelled. On the figure 2 , the chamber 38 has a volume substantially equal to the volume of a dose of product. In the example of the figure 3 the means 82 comprise two toric section lips. In the embodiment variant illustrated on the figure 4 the means 82 comprise two lips of angular section.

La partie rigide 84 est de révolution, elle s'étend principalement dans la jupe cylindrique de la membrane 30. Dans cet exemple, la partie rigide 84 a sensiblement la forme d'une bague portant, sur sa surface extérieure, les deuxièmes moyens 82. Par ailleurs, la partie rigide 84 comprend un socle 90 d'appui sur le support 26, venant en butée contre un épaulement 92 du support pour faciliter l'assemblage précis de la membrane 30. En outre, dans cet exemple, la bague 84 est pourvue d'une surface d'appui 94 pour un outil d'assemblage. Plus précisément, cette surface 94 prend la forme d'une collerette supérieure 94, servant de surface d'appui pour un outil d'assemblage pour plaquer facilement la membrane 30 contre le support 26. Éventuellement, la liaison entre cette collerette 94 et le reste de la bague est ajourée, de façon à créer un pont de matière entre les moyens 82 et les moyens 80 de la membrane, servant d'accroche mécanique pour une meilleure tenue des éléments 80, 82 avec la partie rigide 84. On notera que d'autres formes d'accroche mécanique et/ou chimique peuvent bien sûr être envisagées.The rigid portion 84 is of revolution, it extends mainly in the cylindrical skirt of the membrane 30. In this example, the rigid portion 84 has substantially the shape of a ring carrying, on its outer surface, the second means 82. Furthermore, the rigid portion 84 comprises a base 90 bearing on the support 26, abutting against a shoulder 92 of the support to facilitate the precise assembly of the membrane 30. In addition, in this example, the ring 84 is provided with a bearing surface 94 for an assembly tool. More specifically, this surface 94 takes the form of an upper flange 94, serving as a bearing surface for an assembly tool to easily press the membrane 30 against the support 26. Optionally, the connection between this flange 94 and the remainder of the ring is perforated, so as to create a material bridge between the means 82 and the means 80 of the membrane, serving as mechanical catch for better holding the elements 80, 82 with the part Rigid 84. It should be noted that other forms of mechanical and / or chemical grip can of course be envisaged.

La tête de distribution 14 comporte par ailleurs un second cylindre 40, réalisé d'une seule pièce avec le premier cylindre 36. Bien sûr, les cylindres 36 et 40 peuvent être réalisés en plusieurs pièces. Un pointeau 42 est monté coulissant à l'intérieur de ce second cylindre 40, entre une position de repos et une position activée, sous l'action de premiers moyens de rappel 43, composés d'un ressort en compression. Le pointeau 42 est muni d'une base 42a, montée de façon étanche dans le second cylindre 40, d'une tige 42b, configurée pour pouvoir obturer, en position de repos de la pompe, un orifice 44 ménagé sur l'extrémité inférieure du second cylindre 40, et d'une extrémité 42c, faisant légèrement saillie à l'intérieur de la chambre de dosage 38 lorsque le pointeau 42 est en position activée. Cette extrémité 42c est configurée pour appuyer sur la membrane 30 lorsque la partie mobile 14 est en position activée, de façon à garantir l'ouverture de l'orifice 44 en phase d'amorçage du dispositif (donc de façon à pousser l'air de la chambre de dosage 38 vers le haut du dispositif) et/ou à obturer l'orifice d'alimentation du support 26.The dispensing head 14 further comprises a second cylinder 40, made in one piece with the first cylinder 36. Of course, the cylinders 36 and 40 can be made of several parts. A needle 42 is slidably mounted inside this second cylinder 40, between a rest position and an activated position, under the action of first return means 43, composed of a spring in compression. The needle 42 is provided with a base 42a, sealingly mounted in the second cylinder 40, of a rod 42b, configured to be able to close, in the rest position of the pump, an orifice 44 formed on the lower end of the second cylinder 40, and an end 42c, projecting slightly inside the metering chamber 38 when the needle 42 is in the activated position. This end 42c is configured to press the membrane 30 when the movable portion 14 is in the activated position, so as to ensure the opening of the orifice 44 in the priming phase of the device (so as to push the air of the metering chamber 38 towards the top of the device) and / or to close the supply orifice of the support 26.

La tête de distribution 14 comporte par ailleurs un support 46, monté fixe par rapport aux premier 36 et second 40 cylindres, et délimitant une chambre de distribution 48. Bien sûr, le support 46 pourrait être réalisé d'une seule pièce avec les éléments 36 et/ou 40. C'est généralement sur le support 46 qu'est monté l'embout de distribution du dispositif, la chambre 48 étant reliée à une buse de distribution prévue sur cet embout. On notera que la chambre 48 n'est pas forcément présente sur le support 46, on peut prévoir seulement une connexion du support 46 et/ou du cylindre 40 avec l'embout de distribution. Le support 46 de la tête 14 est muni d'une jupe interne 50 et d'une jupe externe 52, entre lesquelles des seconds moyens de rappel 54 sont logés. Les moyens de rappel 54 sont composés d'un ressort en compression, prenant appui d'une part sur le support 46, entre les deux jupes 50, 52, d'autre part sur la partie fixe 12, au fond du manchon 22. Grâce au ressort 54, la tête 14, mobile par rapport à la partie fixe 12 entre une position de repos et une position activée, est maintenue en position haute, comme cela est représenté sur la figure 1. A l'intérieur de la jupe interne 50, le support 46 présente par ailleurs un siège d'appui du premier ressort 43. Le support 46 comprend de plus des moyens assurant le passage du liquide depuis la chambre de dosage 38 vers l'embout de distribution, plus précisément vers la chambre de distribution 48, agencés notamment entre le second cylindre 40 et la jupe interne 50, de préférence de façon à assurer le passage de liquide sans que ce liquide ne soit en contact avec les moyens de rappel 43 et 54.The dispensing head 14 also comprises a support 46, fixedly mounted relative to the first 36 and second 40 cylinders, and delimiting a distribution chamber 48. Of course, the support 46 could be made in one piece with the elements 36 and / or 40. It is generally on the support 46 that the dispensing nozzle of the device is mounted, the chamber 48 being connected to a dispensing nozzle provided on this nozzle. Note that the chamber 48 is not necessarily present on the support 46, it can provide only a connection of the support 46 and / or the cylinder 40 with the dispensing tip. The support 46 of the head 14 is provided with an inner skirt 50 and an outer skirt 52, between which second return means 54 are housed. The return means 54 are composed of a spring in compression, bearing on the one hand on the support 46, between the two skirts 50, 52, on the other hand on the fixed part 12, at the bottom of the sleeve 22. at the spring 54, the head 14, movable relative to the fixed part 12 between a rest position and an activated position, is held in the up position, as shown in FIG. figure 1 . Inside the inner skirt 50, the support 46 also has a seat for the first spring 43. The support 46 further comprises means ensuring the passage of the liquid from the metering chamber 38 to the dispensing nozzle, specifically to the dispensing chamber 48, arranged in particular between the second cylinder 40 and the inner skirt 50, preferably so as to ensure the passage of liquid without this liquid being in contact with the return means 43 and 54.

La pompe 10 comprend également des moyens 56, 58 de mise en butée de la partie mobile 14 par rapport à la partie fixe 12, devant être franchis en force pour que la partie 14 passe de sa position de repos à sa position activée. Les moyens 56, 58 comprennent dans cet exemple trois butées 58 portées par la partie fixe 12, et trois butées 56, portées par la partie mobile 14 et déformables entre une configuration de butée et une configuration d'effacement. Les moyens 56, 58 de mise en butée sont permanents, et sont destinés à être franchis en force à chaque activation de la pompe par l'utilisateur. Ils sont destinés à forcer l'utilisateur à exercer une force minimale sur la partie mobile 14, afin de délivrer des doses complètes, avec un spray de bonne qualité, notamment du point de vue de la taille et de la densité des particules.The pump 10 also comprises means 56, 58 for abutment of the movable part 14 relative to the fixed part 12, to be forced past in order for the part 14 to move from its rest position to its activated position. The means 56, 58 comprise in this example three stops 58 carried by the fixed part 12, and three stops 56, carried by the movable part 14 and deformable between an abutment configuration and an erasure configuration. The means 56, 58 of abutment are permanent, and are intended to be crossed in force at each activation of the pump by the user. They are intended to force the user to exert minimal force on the moving part 14, in order to deliver complete doses, with a good quality spray, in particular from the point of view of the size and density of the particles.

Le fonctionnement de la pompe des figures 1 à 4, assemblée sur le réservoir et munie de l'embout de distribution, va à présent être décrit.The operation of the pump Figures 1 to 4 , assembled on the tank and provided with the dispensing nozzle, will now be described.

Avant que l'utilisateur ne délivre une dose de produit, la pompe 10 est en position de repos, ou position haute, représentée sur la figure 2. Dans cette position, la pompe est déjà amorcée, donc la chambre de dosage 38 a un certain volume, dit volume en position haute, et est remplie de produit, le produit contenu dans cette chambre 38 comprenant la dose de produit qui sera distribuée. En d'autres termes, comme on peut le voir sur la figure 2, la position de repos correspond à une position dans laquelle le premier cylindre 36, donc l'ensemble de la partie mobile 14, est décalé vers le haut par rapport à la partie fixe 12, notamment par rapport au corps de pompe 16. Dans cette position, le pointeau 42 est plaqué contre l'extrémité inférieure du cylindre 40, sous l'action du ressort 43, la tige 42b coopérant avec l'orifice 44 de façon à obturer cet orifice. Par ailleurs, dans cette position, l'extrémité 42c du pointeau 42 n'est pas en contact avec le piston 20, ce dernier se trouvant en bas de la chambre de dosage 38. Les moyens 80 formant valve anti-retour sont ici en configuration de blocage de liquide.Before the user delivers a dose of product, the pump 10 is in the rest position, or high position, represented on the figure 2 . In this position, the pump is already primed, so the metering chamber 38 has a certain volume, said volume in the high position, and is filled with product, the product contained in this chamber 38 comprising the dose of product to be dispensed. In other words, as we can see on the figure 2 the rest position corresponds to a position in which the first cylinder 36, therefore the whole of the mobile part 14, is shifted upwards with respect to the fixed part 12, in particular with respect to the pump body 16. position, the needle 42 is pressed against the lower end of the cylinder 40, under the action of the spring 43, the rod 42b cooperating with the orifice 44 so as to close this orifice. Furthermore, in this position, the end 42c of the needle 42 is not in contact with the piston 20, the latter being at the bottom of the metering chamber 38. The means 80 forming a non-return valve are here in configuration liquid blocking.

Lorsque l'utilisateur souhaite délivrer une dose de produit, il appuie sur la partie mobile 14 de la pompe 10, éventuellement en appuyant sur l'embout de distribution. II exerce ainsi sur la partie mobile 14 une force schématisée par la flèche 70 sur la figure 1, dans le but d'activer la pompe 10. Sous l'action de cet appui, la partie mobile 14 commence à descendre, jusqu'à ce que les moyens de mise en butée 56, 58 soient franchis en force.When the user wishes to deliver a dose of product, he presses the movable portion 14 of the pump 10, possibly by pressing the dispensing tip. It thus exerts on the mobile part 14 a force schematized by the arrow 70 on the figure 1 , in order to activate the pump 10. Under the action of this support, the movable portion 14 begins to descend, until the abutment means 56, 58 are crossed in force.

Une fois les moyens 56, 58 franchis en force, la partie mobile 14 poursuit sa course vers le bas, conformément à la flèche 70. Ainsi, le support 46 se déplaçant vers le bas, les premier 36 et second 40 cylindres sont également déplacés vers le bas, ce qui a pour effet de diminuer le volume de la chambre de dosage 38, la membrane 30 coulissant dans la chambre 38. Plus précisément, le liquide contenu dans cette chambre exerce une pression vers le haut sur le pointeau 42, de façon que la tige 42b soit déplacée et n'obture plus l'orifice 44. Le liquide peut ainsi s'échapper de la chambre 38. Une fois le liquide passé à travers l'orifice 44, il s'écoule entre le second cylindre 40 et la jupe interne 50, et passe ensuite dans la chambre de distribution 48, afin d'être délivré hors de l'embout de distribution. On notera que, lorsque le volume de la chambre de dosage 38 diminue jusqu'à atteindre un volume en position basse, ici sensiblement nul, le liquide exerce une pression sur le pointeau 42 pour le relever. Selon un mode de réalisation optionnel, l'extrémité 42c du pointeau en position basse appuie sur la membrane 30 de façon à la plaquer contre l'extrémité supérieure 32 du support 26, et ainsi obturer le ou les orifices de libération 88.Once the means 56, 58 forcefully passed, the movable portion 14 continues its downward stroke, in accordance with the arrow 70. Thus, the support 46 moving downwards, the first 36 and second 40 cylinders are also moved to the bottom, which has the effect of reducing the volume of the metering chamber 38, the membrane 30 sliding in the chamber 38. More specifically, the liquid contained in this chamber exerts an upward pressure on the needle 42, so that the rod 42b is displaced and no longer obturates the orifice 44. The liquid can thus escape from the chamber 38. Once the liquid has passed through the orifice 44, it flows between the second cylinder 40 and the inner skirt 50, and then passes into the distribution chamber 48, to be delivered out of the dispensing nozzle. Note that when the volume of the metering chamber 38 decreases until a volume in the low position, here substantially zero, the liquid exerts a pressure on the needle 42 to raise it. According to an optional embodiment, the end 42c of the needle in the low position presses on the membrane 30 so as to press against the upper end 32 of the support 26, and thus close the release orifice (s) 88.

Une fois que la chambre de dosage 38 atteint son volume en position basse, ici sensiblement nul, c'est-à-dire une fois que la dose de produit a été distribuée, l'utilisateur relâche son appui sur la partie mobile 14. Sous l'action du ressort 43, le pointeau 42 est à nouveau comprimé contre la paroi inférieure du cylindre 40, de façon à obturer l'orifice 44. Par ailleurs, sous l'effet du ressort 54, la partie mobile 14 remonte vers le haut, dans une direction opposée à la flèche 70, ce qui fait coulisser le second cylindre 36 par rapport au piston 20 dans la direction opposée à la flèche 70. Ainsi, la chambre de dosage 38 augmente de volume, de façon à créer une dépression et aspirer du produit par le tube de prise 18. Plus précisément, les moyens 80 se déforment pour prendre leur configuration de libération de liquide. La partie mobile 14 se déplace vers le haut jusqu'à la position de repos initiale. Dans cette position, la chambre de dosage 38 est à nouveau remplie de produit, en ayant un volume identique en position haute, et permettant ainsi de délivrer une autre dose, de volume identique à celui venant d'être délivré. Les moyens 80 reprennent leur position de blocage de liquide.Once the metering chamber 38 reaches its volume in the low position, here substantially zero, that is to say once the dose of product has been dispensed, the user releases its support on the mobile part 14. Under the action of the spring 43, the needle 42 is again compressed against the bottom wall of the cylinder 40, so as to close the orifice 44. Moreover, under the effect of the spring 54, the movable portion 14 rises upwards in a direction opposite to the arrow 70, which slides the second cylinder 36 relative to the piston 20 in the direction opposite to the arrow 70. Thus, the metering chamber 38 increases in volume, so as to create a depression and aspirate the product through the grip tube 18. Specifically, the means 80 deform to take their liquid release configuration. The movable portion 14 moves upward to the initial rest position. In this position, the metering chamber 38 is again filled with product, having an identical volume in the high position, and thus making it possible to deliver another dose, of identical volume to that just delivered. The means 80 resume their liquid blocking position.

On notera que le dispositif décrit n'est pas limité aux exemples précédemment décrits. En particulier, une membrane similaire à la membrane 30 peut être utilisée dans un autre dispositif qu'une pompe. Parmi les avantages de la membrane 30, on comprend que l'on offre une meilleure maîtrise de l'effort d'ouverture de l'orifice 88 de la membrane, grâce aux dimensions et au positionnement précis. En effet, l'utilisation d'une membrane bi-matière pour pour former la valve anti-retour plaquée contre une siège 32 sur lequel la membrane 30 est rapportée assure de façon particulièrement fiable la fonction anti-retour.It will be noted that the device described is not limited to the examples described above. In particular, membrane-like membrane 30 may be used in a device other than a pump. Among the advantages of the membrane 30, it is understood that it offers better control of the opening force of the orifice 88 of the membrane, thanks to the size and precise positioning. Indeed, the use of a bi-material membrane to form the non-return valve pressed against a seat 32 on which the membrane 30 is reported particularly reliably ensures the non-return function.

Claims (13)

Dispositif (10) pour la délivrance d'un produit, comportant un piston (20) comprenant un support (26) et une membrane (30), le support (26) étant traversé par un canal d'alimentation (28) débouchant sur un ou plusieurs orifices d'alimentation prévus sur l'extrémité supérieure (32) du support (26), la membrane (30) étant montée coulissante dans une chambre de dosage (38) et comprenant : - des premiers (80) moyens d'étanchéité, formant valve anti-retour, ces premiers moyens (80) pouvant prendre une configuration de blocage du liquide en étant plaqués contre le support (26), - des deuxièmes (82) moyens d'étanchéité, assurant un coulissement étanche de la membrane (30) par rapport à la chambre de dosage (38), les premiers (80) et deuxièmes (82) moyens d'étanchéité étant réalisés dans un matériau relativement souple, la membrane (30) comprenant en outre une partie rigide (84), réalisée dans un matériau plus rigide que le matériau des premiers et deuxièmes moyens d'étanchéité.Device (10) for the delivery of a product, comprising a piston (20) comprising a support (26) and a membrane (30), the support (26) being traversed by a feed channel (28) opening on a or a plurality of supply ports provided on the upper end (32) of the carrier (26), the diaphragm (30) being slidably mounted in a metering chamber (38) and comprising: first (80) sealing means forming a non-return valve, these first means (80) being able to assume a configuration for blocking the liquid while being pressed against the support (26), second (82) sealing means, ensuring a tight sliding of the membrane (30) with respect to the metering chamber (38), the first (80) and second (82) sealing means being made of a relatively flexible material, the membrane (30) further comprising a rigid portion (84), made of a material more rigid than the material of the first and second sealing means. Dispositif selon la revendication précédente, dans lequel la partie rigide (84), les premiers (80) et deuxièmes (82) moyens d'étanchéité sont obtenus par co-injection, bi-injection, surmoulage.Device according to the preceding claim, wherein the rigid portion (84), the first (80) and second (82) sealing means are obtained by co-injection, bi-injection, overmolding. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la partie rigide (84) est réalisée dans un matériau choisi parmi un polymère, par exemple du polypropylène, du polyéthylène, du polyesther (tel que du poly-butylène-téréphtalate (PBT)), du polyacétal, du polyamide, ou un métal, par exemple de l'acier inoxydable.Device according to any one of the preceding claims, in which the rigid part (84) is made of a material chosen from a polymer, for example polypropylene, polyethylene, polyesters (such as polybutylene terephthalate (PBT)). ), polyacetal, polyamide, or a metal, for example stainless steel. Dispositif selon l'une quelconque des revendications précédentes, dans lequel partie rigide (84) a sensiblement la forme d'une bague.Apparatus according to any one of the preceding claims, wherein the rigid portion (84) is substantially ring-shaped. Dispositif selon l'une quelconque des revendications précédentes, dans lequel les deuxièmes (82) moyens d'étanchéité comprennent au moins une lèvre de révolution (34).Apparatus according to any one of the preceding claims, wherein the second (82) sealing means comprise at least one lip of revolution (34). Dispositif selon l'une quelconque des revendications précédentes, dans lequel la membrane (30) comprend une paroi transversale, portant les premiers (80) moyens d'étanchéité, et une jupe cylindrique, portant les deuxièmes (82) moyens d'étanchéité, la partie rigide (84) s'étendant principalement dans cette jupe cylindrique.Apparatus according to any one of the preceding claims, wherein the membrane (30) comprises a transverse wall, carrying the first (80) sealing means, and a cylindrical skirt, carrying the second (82) sealing means, the rigid portion (84) extending mainly in this cylindrical skirt. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la membrane (30) est assemblée sur le support (26) et comprend un socle (90) d'appui sur ce support, le socle d'appui faisant partie de la partie rigide (84) de la membrane.Device according to any one of the preceding claims, wherein the membrane (30) is assembled on the support (26) and comprises a base (90) bearing on this support, the support base forming part of the rigid part (84) of the membrane. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la partie rigide (84) comprend une surface d'appui (94) pour un outil d'assemblage de la membrane (30) dans le dispositif.Apparatus according to any one of the preceding claims, wherein the rigid portion (84) comprises a bearing surface (94) for a membrane assembly tool (30) in the device. Dispositif selon l'une quelconque des revendications précédentes, comprenant des troisièmes (85) moyens d'étanchéité, assurant une étanchéité permanente entre la membrane (30) et le support (26) de membrane.Apparatus according to any one of the preceding claims comprising third (85) sealing means providing permanent sealing between the membrane (30) and the membrane support (26). Dispositif selon l'une quelconque des revendications précédentes, dans lequel la membrane (30) est utilisée dans une pompe.Apparatus according to any one of the preceding claims, wherein the membrane (30) is used in a pump. Dispositif selon l'une quelconque des revendications précédentes, dans lequel la membrane (30) est rapportée sur le support et le support comprend un siège (32) d'appui des premiers moyens d'étanchéité (80), qui sont plaqués contre le siège (32) lorsqu'ils sont en configuration de blocage et qui en sont espacés lorsqu'ils sont en configuration de libération de produit.Device according to any one of the preceding claims, wherein the membrane (30) is attached to the support and the support comprises a seat (32) for supporting the first sealing means (80), which are pressed against the seat (32) when in blocking configuration and spaced therefrom when in a product release configuration. Dispositif selon la revendication 11, dans lequel le siège (32) est venu de moulage avec le support (26).Device according to claim 11, wherein the seat (32) is integrally molded with the support (26). Dispositif selon l'une quelconque des revendications précédentes, dans lequel le support (26) comprend une partie tubulaire délimitant le canal d'alimentation (28) et la membrane (30) comprend une jupe cylindrique montée fixe autour de cette partie tubulaire.Device according to any one of the preceding claims, wherein the support (26) comprises a tubular portion delimiting the supply channel (28) and the membrane (30) comprises a cylindrical skirt mounted fixed around this tubular portion.
EP10152538A 2009-02-06 2010-02-03 Spray dispenser comprising a one-way membrane valve Not-in-force EP2218515B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0950776 2009-02-06

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EP2218515A1 true EP2218515A1 (en) 2010-08-18
EP2218515B1 EP2218515B1 (en) 2011-11-23

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EP10152538A Not-in-force EP2218515B1 (en) 2009-02-06 2010-02-03 Spray dispenser comprising a one-way membrane valve

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US (1) US8408428B2 (en)
EP (1) EP2218515B1 (en)
CN (1) CN101797412B (en)
AT (1) ATE534470T1 (en)

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CN103286020B (en) * 2013-07-02 2016-03-02 江苏新天宝机械有限公司 Cleaning fluid shower nozzle in a kind of tank body
AU2015206217B2 (en) * 2014-01-20 2018-11-08 Graco Minnesota Inc. Sprayer with integrated valve seats
US11464919B2 (en) * 2016-09-30 2022-10-11 Softhale Nv Atomiser, in particular inhaler, for atomising a liquid active agent to form an aerosol and a corresponding method
TW202027808A (en) * 2017-11-06 2020-08-01 微邦科技股份有限公司 Fluid delivery apparatus
CN111547368A (en) * 2020-06-03 2020-08-18 麦嘉铖 Liquid outlet control mechanism and inverted container with same
CN111844655B (en) * 2020-07-18 2021-12-03 宁波博纳机械有限公司 Injection molding machine is used in plastics product processing

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FR2048416A5 (en) * 1969-08-27 1971-03-19 Pfeiffer Kg Erich
GB2176543A (en) * 1985-01-08 1986-12-31 Douglas Frank Corsette Manually operated pump
FR2885890A1 (en) 2005-05-20 2006-11-24 Rexam Dispensing Systems Sas DEVICE FOR DELIVERING AND ADMITTING A LIQUID PRODUCT

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US4107043A (en) * 1977-03-03 1978-08-15 Creative Dispensing Systems, Inc. Inlet conduit fluid filter
GB8720978D0 (en) * 1987-09-07 1987-10-14 Bespak Plc Collapsible chamber metering valve
FR2731992B1 (en) * 1995-03-21 1997-04-30 Oreal DISPENSER OF LIQUID OR PASTY PRODUCT FOR USE IN PARTICULAR IN COSMETICS
FR2885887B1 (en) * 2005-05-20 2010-11-05 Rexam Dispensing Sys POINTE PUMP FOR THE DISTRIBUTION OF LIQUID PRODUCT
FR2917651B1 (en) * 2007-06-20 2010-09-17 Rexam Dispensing Sys PUMP FOR DISTRIBUTION OF AN IMPROVED LIQUID IMPROVED PRODUCT

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
FR2048416A5 (en) * 1969-08-27 1971-03-19 Pfeiffer Kg Erich
GB2176543A (en) * 1985-01-08 1986-12-31 Douglas Frank Corsette Manually operated pump
FR2885890A1 (en) 2005-05-20 2006-11-24 Rexam Dispensing Systems Sas DEVICE FOR DELIVERING AND ADMITTING A LIQUID PRODUCT

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CN101797412A (en) 2010-08-11
EP2218515B1 (en) 2011-11-23
US20100213216A1 (en) 2010-08-26
CN101797412B (en) 2014-06-18
US8408428B2 (en) 2013-04-02
ATE534470T1 (en) 2011-12-15

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