WO2017051126A1 - Airless dispensing system having a pump - Google Patents

Airless dispensing system having a pump Download PDF

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Publication number
WO2017051126A1
WO2017051126A1 PCT/FR2016/052407 FR2016052407W WO2017051126A1 WO 2017051126 A1 WO2017051126 A1 WO 2017051126A1 FR 2016052407 W FR2016052407 W FR 2016052407W WO 2017051126 A1 WO2017051126 A1 WO 2017051126A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
push button
dispensing system
pump
rigid support
Prior art date
Application number
PCT/FR2016/052407
Other languages
French (fr)
Inventor
Géry DAMBRICOURT
Original Assignee
Cep Tubes
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
Application filed by Cep Tubes filed Critical Cep Tubes
Priority to EP16785209.4A priority Critical patent/EP3352913B1/en
Publication of WO2017051126A1 publication Critical patent/WO2017051126A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill 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
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0072—A valve member forming part of an outlet opening
    • 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
    • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
    • 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
    • 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
    • B05B11/01—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
    • B05B11/1073—Springs
    • B05B11/1074—Springs located outside pump chambers

Definitions

  • the present invention relates to a distribution system without air also called “airless”, that is to say without air intake so that the dispensed product is never in contact with the air before distribution, the dosage being provided by means of a non-return pump integrated in said system.
  • This type of airless distribution system is used in particular for the distribution of products that are likely to deteriorate in contact with the air. It may be pharmaceutical products or cosmetic products such as care creams, of fluid consistency, that is to say liquid or pasty.
  • the fluid product is packaged in a retractable container so that the volume of the container corresponds precisely at any time of use to the residual amount of the product it contains, the product never being in contact with the air at all. inside the container.
  • such dispensers comprises a pump with a variable volume distribution chamber provided with an inlet connected to the container, and an outlet for discharging the product to be dispensed.
  • the most accurate system is to operate a piston by a movement back and forth in a cylinder.
  • This is the most conventional design for an airless distributor pump, the opening and closing movements at the inlet and outlet of the distribution chamber being made by means of valves made of balls or mobile rigid flaps.
  • the advantage of the ball is that it is smaller, which makes it possible to have a pump of smaller size.
  • a first system without air is airtight from the container to a first valve located immediately out of the dispensing chamber.
  • a second airless system called “full airless” is airtight from the container to the exhaust port. The second system is still much more complex and more expensive than the first.
  • the object of the invention is to provide an airless distribution system that is both efficient and simple to manufacture while keeping the traditional architecture of a pump whose distribution chamber is constituted by a sliding piston in a cylinder.
  • the dispensing system according to the invention is intended to be fixed on a container in which is packaged a fluid product.
  • Said dispensing system comprises a pump, two inlet and outlet check valves respectively, an elastic return means and a push button.
  • Said pump is set in motion by a pushing action on the push button connected to said pump.
  • the distribution system is characterized in that:
  • - It consists of three pieces of one-piece structure: a rod, a hoop and a push button; the three one-piece pieces support the resilient return means and cooperate with one another to ensure the dispensing of the fluid product under the effect of the thrust exerted on the push button from the container to a discharge orifice;
  • the two inlet and outlet check valves each consist of a valve mounted to bear on a rigid support to which said valve is connected by a fixed connection;
  • At least one valve has a flexible and deformable peripheral area not perforated, located opposite the rigid support;
  • the rigid wall is perforated by at least one orifice located vis-à-vis the peripheral zone;
  • the peripheral zone has a substantially conical shape before mounting with a large base, a small base and an inner face of the inner side of the large base of the cone;
  • peripheral zone has a deformation consecutive to the support of the inner face of the large base on the rigid support (24, 52) in the assembled position.
  • the system comprises only three structural parts: the rod, the hoop and the push button, with a spring and two valves.
  • the invention thus makes it possible to merge with a common constituent a dosing function, that is to say the motor function performed by the push button and the pump, and a distribution function, that is to say conveying the fluid product from the container to an outlet orifice where the discharge channel opens, these functions being performed by means of three structural parts.
  • the anti-return valves consist of a non-return valve comprising a flexible wall disposed opposite the rigid support and mounted in support or prestress bearing on said rigid support to which said valve is connected by a fixed connection.
  • the rigid support is perforated with at least one passage disposed vis-à-vis the flexible wall.
  • the inlet valve consists of a valve resting on the rigid support part of the hoop.
  • the outlet valve consists of a valve resting on the rigid support part of the rod or the push button according to the selected solution. Before assembly, the valve has a conical peripheral zone. In the assembled position, said peripheral zone has a deformation of the flattening type and induces elongation subsequent to the bearing of the inner face of the large base on the rigid wall. This elongation induces a considerable bearing force, much greater than a non-elastic deformation, which ensures tightness when the dispensing system is "at rest” including if the container is overpressure.
  • the dispensing system is "idle" when the pressures inside the container and inside the pump and the atmospheric pressure are the same.
  • the pressure variation in the distribution chamber will deform the flexible wall and allow the opening of the valve.
  • the valve is connected to the rigid wall by a fixed non-deformable connection
  • a fixed non-deformable connection means that only a portion of the valve ensuring the connection to the rigid wall is fixed and not deformable.
  • This fixed part made of flexible polymer, is located in the center of the valve.
  • the flexible peripheral zone extends radially outwardly from this attachment zone.
  • the attachment zone may, for example, consist of a flexible chimney part of the clamshell on a rigid rod connected to the rigid wall.
  • the assembly of the flexible chimney and the rigid rod constitutes a rigid and waterproof assembly. The assembly thus produced can withstand an upstream pressure higher than 6 bars.
  • the fixing zone can not perform any movement in translation, rotation or deformation of any type with respect to the rigid wall.
  • the pump comprises a distribution chamber consisting of a piston sliding in a pump cylinder and a first evacuation channel.
  • the pump thus acts as both pump and first evacuation channel
  • the hoop comprises the cylinder of the pump, a first sealing means of the container to the distribution system and the rigid bearing support of the valve of the inlet valve.
  • the valve is constituted by said valve mounted to bear on said rigid support support.
  • the hoop equipped with the inlet valve acts as a cumulative sealing connection between the container in which the fluid product is conditioned and the distribution system, the inlet valve in the distribution chamber, and finally the first component cylinder of the cylinder. distribution chamber.
  • the rod comprises the piston, the first discharge channel, and a second sealing means with the push button.
  • the rod is hollow throughout its length to form the first product discharge channel from the dispensing chamber to the push button.
  • the rod acts as a piston of the pump, the first exhaust pipe, and sealing connection with the push button.
  • the push button is connected to the rod by the second connection means of said rod and comprises a second evacuation channel.
  • the second evacuation channel connects the first discharge channel housed in the rod to the discharge port housed in said push button.
  • the push button is fixedly connected to the rod so that the pressing action on the push button causes the movement of the rod and by the same that of the piston in the cylinder.
  • the push button may for example be fitted on the rod.
  • the outlet is the outlet of the second exhaust channel on the outside.
  • the rod comprises a rigid support disposed at the outlet end of the first discharge channel, and the outlet valve is constituted by the valve mounted to bear on said rigid support.
  • the stem has two ends.
  • the piston is disposed at a first end of the rod.
  • the exit end is the second end of the rod.
  • the rod is a one-piece assembly that integrates the rigid bearing support of the valve of the outlet valve.
  • the support consists of a shoulder disposed at the outlet of the first evacuation channel.
  • the rod is then equipped with a valve bearing on said support support and the pump is thus equipped with the outlet valve.
  • the outlet valve is thus disposed at the outlet of the dispensing chamber and the dispensing system is airtight from the container to the outlet of the dispensing chamber.
  • a second outlet check valve is disposed in the discharge orifice, the push button then also comprising a rigid support disposed in the discharge orifice and the outlet valve consisting of the mounted valve. resting on said rigid support.
  • the push button is a one-piece assembly that incorporates a rigid support support of the valve of the second outlet valve. Said bearing surface is constituted by the free end of a rod housed in the center of the discharge orifice, said rod being integral with the push button.
  • the push button is then equipped with a valve housed in the discharge orifice, the flexible wall of the valve is supported on the bearing support formed by said free end.
  • the pump is then equipped with a second outlet valve.
  • the pump is equipped with two outlet valves, the first of which is disposed at the outlet of the distribution chamber and the second is disposed in the outlet orifice of the dispensing system; the second valve ensures the closure of said discharge port.
  • This version has the advantage of great safety, the two output valves having a double air barrier.
  • the second outlet valve housed in the orifice being in contact with the outside, can degrade for a reason of shock, fall or because of any aggression. In this case, the distribution system is always airtight until the exit of the distribution chamber.
  • the push button comprises the rigid support disposed in the discharge orifice, the outlet valve being constituted by the valve mounted to bear on said rigid support.
  • the pump is therefore equipped with a single outlet valve which simultaneously ensures the closing of the discharge orifice. It has the advantage that the dispensing system is sealed from the container to the dispensing orifice.
  • the invention also relates to an assembly comprising a distribution system with at least one of the preceding characteristics. It is characterized in that the dispensing system is fixed on a container and in that the assembly is airtight outside from the container to the outlet valve of the pump further downstream. The assembly is thus sealed from the container to the outlet of the first discharge channel in the first embodiment. The assembly is thus sealed from the container to the discharge port in the second and third embodiments.
  • FIG. 1 represents a section of a distribution system of the invention according to a first embodiment
  • FIG. 2 is a section of a distribution system of the invention according to a second embodiment
  • FIG. 3 is a section of a dispensing system of the invention according to a third embodiment.
  • the top of the distribution system corresponds to the push button and the bottom to the band in contact with the container.
  • the product flows from the container upstream of the dispensing system to the outlet port downstream of said dispensing system.
  • the valve disposed in the dispensing orifice is therefore located downstream of the valve disposed at the outlet of the first evacuation channel.
  • the dispensing system illustrated in FIG. 1 comprises a hoop 2, a push button 3, a return spring 4 constituting a return system, a rod 5 and two valves.
  • the valves each comprise a valve 6 and 7 having a flexible wall 60 and 70 peripheral located vis-à-vis the rigid support 24 integral part of the hoop 2 for the valve 6 and the rigid support 52 integral part of the rod for the flap 7.
  • the rigid support is pierced by at least one orifice 6 or 7 located opposite the flexible wall of the valve.
  • the valve is in the closed position when the flexible peripheral wall 60 or 70 of the valve is respectively in contact with the rigid support 24 or 52 over its entire perimeter and in the open position when the flexible peripheral wall 60 or 70 of the valve is spaced from the rigid support on at least a part of this perimeter, the valve 6 or 7 and the rigid support 24 or 52 constituting a sealed assembly when the flexible flexible wall of the valve 6 or 7 is in contact with the whole of its perimeter with the rigid support 24 or 52.
  • the valve 6 or 7 is respectively connected to the rigid support 24 or 52 by a fixed non-deformable connection.
  • the valve moves from the closed position to the open position by deformation of the peripheral zone of the valve 6 or 7.
  • the flexible walls 60, 70 of the non-return valves 6 and 7 are cone-shaped.
  • the flexible walls 60, 70 will deform during assembly by the support and stress of the inner face of the large base of the cone on the rigid support 24 or 52.
  • valves 6 and 7 are identical as in FIG.
  • the return system may for example be a helically shaped compression spring, other solutions being possible.
  • the hoop 2 is monobloc, for example consisting of a rigid plastic block obtained in a molding operation. It has a face 22 to ensure a tight connection with a container (not shown) filled with a product to be dispensed and sensitive to air. It includes an opening 20 to allow the transfer of the product into the chamber of distribution when the valve is open and a cylinder 21 which constitutes a first element of the distribution chamber.
  • the rod 5 is also monobloc, it comprises the piston (50) disposed at a first end of said rod, said piston being in sealing contact with the inner wall of the cylinder 21, a guide ring 53 and is pierced along its entire length a duct constituting a first evacuation channel 51 which passes through it from bottom to top, preferably at its center from the first end to a second end called the outlet end 511.
  • the first discharge channel 51 is closed in the upper part of the rod 5 by the valve 7 fixedly bearing on the rigid support 52 disposed at the outlet end 511 of the rod (5).
  • the internal volume of the cylinder 21 delimited at the top by the internal face of the piston 50 and at the bottom by the valve 6 constitutes a distribution chamber 8.
  • the distribution chamber 8 is extended by the first evacuation channel 51 inside the the rod 5 and the second exhaust channel 31 inside the push button 3.
  • the rod 5 is secured to the push button 3 by interlocking.
  • the valve 7 is fixed on the push button 3 before interlocking the push button 3 on the rod 5.
  • the rod 5 and the push button 3 constitute a rigid assembly, the flexible wall of the valve 7 then bearing on the rigid support 52 and closing the discharge channel (51) when the valve is in the open position.
  • the rod 5 is movable in translation in the cylinder 21 between two positions, a high position where a distribution chamber 8 is of maximum volume and a low position where the distribution chamber 8 is of minimum volume.
  • the guide ring 53 cooperates with the inner face of the cylinder 21 to ensure that the rod 21 moves in a direction perfectly coaxial with the longitudinal axis of said cylinder.
  • the piston 50 has a recess 500 of shape complementary to the valve 6 to allow an engagement of the piston 50 on the valve 6 and thus reduce the minimum volume of the distribution chamber 8.
  • the rod 5 is attached to the push button 3 in its upper part and the valve 7 is disposed at the interface of the channels 51 and 31.
  • the spring 4 keeps the push button 3 in the high rest position, it is supported on one face 30 of the push button 3 on one side and on one face 23 of the hoop 2 of the other.
  • the push button 3 is pierced with a second complementary discharge channel 31 intended to extend the first channel 51 to the orifice 32.
  • the dispensing system comprises an outlet valve consisting of a valve 9 having a flexible wall 90 disposed opposite the free end of a rod constituting the support of rigid support 33 of said flexible wall 90, said rod being an integral part of the push button 3.
  • the flexible wall is perforated with a concentric orifice 32 with the support support 33.
  • the orifice 32 has a substantially homothetic contour to that of the support support 33 in a plane P perpendicular to the axis xx 'of the rod.
  • the orifice 32 has a surface smaller than the projected surface of the support support 33 in the plane P.
  • the valve is in the closed position when the flexible wall 90 is in contact with the rigid support support 33 over the entire perimeter of the orifice 32, and in the open position when the flexible wall 90 is distant from the support support 33 on at least a portion of the perimeter of the orifice 32.
  • valve 9 and the free end of the rod constituting the support support 33 form a sealed assembly when the flexible wall 90 is in contact with the support support 33 over the entire perimeter of the orifice 32.
  • the valve 9 is connected to the push button 3 by a non-deformable fixed link.
  • the valve moves from the closed position to the open position by deformation of the flexible wall 90.
  • the flexible wall 90 is supported on the support support 33 at any point on its surface in contact with said support support.
  • Said support is obtained by elastic deformation of said flexible wall 90, said deformation resulting from mounting of the valve 9 in the push button 3.
  • the flexible wall 90 Before assembly, the flexible wall 90 may be inverted cone-shaped open. During assembly, the flexible wall 90 is deformed and takes a substantially flat shape as shown in Figure 3. In a preferred embodiment the push button 3 and the rod are monobloc.
  • the dispensing system comprises three valves: an inlet valve and two outlet valves.
  • the inlet valve is identical to that of the embodiments shown in FIG. 1 and FIG.
  • the first outlet valve is identical to the outlet valve of Figure 1 and the second outlet valve is identical to the outlet valve of Figure 3.
  • the volume of the dose may vary in very large proportions.
  • the manufacturer imposes a piston stroke of 5 mm.
  • the inside diameter of the cylinder be equal to 6.5 mm and that the diameter of the valve before deformation is less than 6 mm.
  • the invention allows miniaturization of the pump dispensing system for a minimum dosage, it is therefore even simpler to achieve the application for much larger doses by increasing the diameter of the cylinder and the piston and that of the valve.
  • valves 6, 7 and 9 will preferably be made of a flexible polymer having a good shape memory of the TPP, TEV or SEBS type or possibly LDPE.
  • the rod 5 will be made of a polyethylene, preferably a PEL or a LDPE.
  • the push button 3 and the hoop 2 do not have specific mechanical properties and can be realized in a more rigid polymer of HDPE or polycarbonate type.
  • Polypropylene may also be used although not having the barrier and appearance properties of HDPE.

Abstract

The present invention relates to a dispensing system intended to be secured to a container in which a fluid product is packaged, said dispensing system comprising a pump (1), an inlet non-return valve and an outlet non-return valve, an elastic return means (4) and a push button (3), said pump (1) being set in motion by way of a pushing action on the push button (3) connected to said pump (1). The dispensing system according to the invention is characterized in that it is made up of three one-piece structural parts: a rod (5), a collar (2) and the push button (3), at least one flap (6, 7) has a flexible and deformable peripheral region (70, 80) that is not perforated and is situated opposite the rigid support (24, 52).

Description

SYSTEME DE DISTRIBUTION SANS AIR AVEC POMPE  AIR-FREE DISTRIBUTION SYSTEM WITH PUMP
La présente invention se rapporte à un système de distribution sans air aussi appelé "airless", c'est-à-dire sans reprise d'air de sorte que le produit distribué n'est jamais en contact avec l'air avant sa distribution, le dosage étant assuré au moyen d'une pompe anti-retour intégrée dans ledit système. Ce type de système de distribution dit airless est notamment utilisé pour la distribution de produits qui sont susceptibles de se détériorer au contact de l'air. Il peut s'agir de produits pharmaceutiques ou de produits cosmétiques comme des crèmes de soins, de consistance fluide, c'est-à-dire liquide ou pâteuse. The present invention relates to a distribution system without air also called "airless", that is to say without air intake so that the dispensed product is never in contact with the air before distribution, the dosage being provided by means of a non-return pump integrated in said system. This type of airless distribution system is used in particular for the distribution of products that are likely to deteriorate in contact with the air. It may be pharmaceutical products or cosmetic products such as care creams, of fluid consistency, that is to say liquid or pasty.
Le produit fluide est conditionné dans un contenant rétractable de sorte que le volume du contenant correspond précisément à tout moment de l'utilisation à la quantité résiduelle du produit qu'il contient, le produit n'étant jamais en contact avec l'air à l'intérieur du contenant.  The fluid product is packaged in a retractable container so that the volume of the container corresponds precisely at any time of use to the residual amount of the product it contains, the product never being in contact with the air at all. inside the container.
De manière classique, ce genre de distributeurs comprend une pompe dotée d'une chambre de distribution de volume variable pourvue d'une entrée reliée au contenant, et d'une sortie pour évacuer le produit à distribuer.  Typically, such dispensers comprises a pump with a variable volume distribution chamber provided with an inlet connected to the container, and an outlet for discharging the product to be dispensed.
Il existe de nombreux moyens pour faire varier le volume de la chambre de distribution. Le système le plus précis consiste à actionner un piston par un mouvement d'aller retour dans un cylindre. Il s'agit là de la conception la plus classique pour une pompe de distributeur airless, les mouvements d'ouverture et de fermeture à l'entrée et à la sortie de la chambre de distribution étant réalisés au moyen de valves constituées de billes ou de clapets rigides mobiles. L'avantage de la bille est qu'elle est plus petite, ce qui permet d'avoir une pompe de plus petite dimension.  There are many ways to vary the volume of the dispensing chamber. The most accurate system is to operate a piston by a movement back and forth in a cylinder. This is the most conventional design for an airless distributor pump, the opening and closing movements at the inlet and outlet of the distribution chamber being made by means of valves made of balls or mobile rigid flaps. The advantage of the ball is that it is smaller, which makes it possible to have a pump of smaller size.
L'intérêt d'une pompe classique dont la chambre de distribution est constituée d'un piston coulissant dans un cylindre est d'offrir un dosage très précis du produit fluide distribué, permettant ainsi d'éviter une utilisation imprécise ou trop importante du produit conditionné dans le contenant. The interest of a conventional pump whose distribution chamber consists of a piston sliding in a cylinder is to offer a very precise dosage of the dispensed fluid product, thereby avoiding imprecise or excessive use of the packaged product in the container.
Ce type de système de distribution est en général composé d'un nombre important de pièces ce qui en complique la fabrication et augmente son coût, d'autant qu'il existe aujourd'hui deux versions de système de distribution. Un premier système sans air dit "airless", est étanche à l'air depuis le contenant jusqu'à une première valve située en sortie immédiate de la chambre de distribution. Un deuxième système sans air dit "full airless" est étanche à l'air depuis le contenant jusqu'à l'orifice d'évacuation. Le deuxième système est encore beaucoup plus complexe et plus onéreux que le premier .  This type of distribution system is generally composed of a large number of parts which complicates the manufacture and increases its cost, especially as there are now two versions of distribution system. A first system without air called "airless", is airtight from the container to a first valve located immediately out of the dispensing chamber. A second airless system called "full airless" is airtight from the container to the exhaust port. The second system is still much more complex and more expensive than the first.
Ceci est d'autant plus critique que les produits fluides sont en général conditionnés dans de simples tubes dont le coût de revient est beaucoup plus faible, lorsque la crème peut être en contact avec l'air.  This is all the more critical as fluid products are generally packaged in simple tubes whose cost is much lower, when the cream can be in contact with the air.
L'objet de l'invention est de proposer un système de distribution sans air qui soit à la fois efficace et simple à fabriquer tout en gardant l'architecture traditionnelle d'une pompe dont la chambre de distribution est constituée d'un piston coulissant dans un cylindre.  The object of the invention is to provide an airless distribution system that is both efficient and simple to manufacture while keeping the traditional architecture of a pump whose distribution chamber is constituted by a sliding piston in a cylinder.
Le système de distribution selon l'invention est destiné à être fixé sur un contenant dans lequel est conditionné un produit fluide. Ledit système de distribution comprend une pompe, deux valves antiretour respectivement d'entrée et de sortie, un moyen de rappel élastique et un bouton poussoir. Ladite pompe est mise en mouvement par le biais d'une action de poussée sur le bouton poussoir relié à ladite pompe. Le système de distribution est caractérisé en ce que :  The dispensing system according to the invention is intended to be fixed on a container in which is packaged a fluid product. Said dispensing system comprises a pump, two inlet and outlet check valves respectively, an elastic return means and a push button. Said pump is set in motion by a pushing action on the push button connected to said pump. The distribution system is characterized in that:
- il est constitué de trois pièces de structure monobloc : une tige, une frette et un bouton poussoir ; - les trois pièces monoblocs supportent le moyen de rappel élastique et coopèrent entre elles pour assurer la distribution du produit fluide sous l'effet de la poussée exercée sur le bouton poussoir depuis le contenant jusqu'à un orifice d'évacuation ; - It consists of three pieces of one-piece structure: a rod, a hoop and a push button; the three one-piece pieces support the resilient return means and cooperate with one another to ensure the dispensing of the fluid product under the effect of the thrust exerted on the push button from the container to a discharge orifice;
- les deux valves antiretour d'entrée et de sortie sont constituées chacune d'un clapet monté en appui sur un support rigide auquel ledit clapet est relié par une liaison fixe ;  the two inlet and outlet check valves each consist of a valve mounted to bear on a rigid support to which said valve is connected by a fixed connection;
- au moins un clapet dispose d'une zone périphérique souple et déformable non ajourée, située en vis-à-vis du support rigide;  - At least one valve has a flexible and deformable peripheral area not perforated, located opposite the rigid support;
— la paroi rigide est ajourée par au moins un orifice situé en vis-à-vis de la zone périphérique;  - The rigid wall is perforated by at least one orifice located vis-à-vis the peripheral zone;
— la zone périphérique a une forme sensiblement conique avant montage avec une grande base, une petite base et une face intérieure du côté intérieur de la grande base du cône ;  - The peripheral zone has a substantially conical shape before mounting with a large base, a small base and an inner face of the inner side of the large base of the cone;
— ladite zone périphérique présente une déformation consécutive à la mise en appui de la face intérieure de la grande base sur le support rigide (24, 52) en position assemblée.  - Said peripheral zone has a deformation consecutive to the support of the inner face of the large base on the rigid support (24, 52) in the assembled position.
Le nombre de pièces est ainsi fortement réduit puisque le système ne comprend plus que trois pièces de structure : la tige, la frette et le bouton poussoir, avec un ressort et deux clapets .  The number of parts is thus greatly reduced since the system comprises only three structural parts: the rod, the hoop and the push button, with a spring and two valves.
L'invention permet ainsi de fusionner avec des constituants communs une fonction de dosage, c'est-à-dire la fonction motrice réalisée par le bouton poussoir et la pompe, et une fonction de distribution, c'est-à-dire d'acheminement du produit fluide depuis le contenant jusqu'à un orifice de sortie où débouche le canal d'évacuation, ces fonctions étant réalisées au moyens de trois pièces de structure. Les valves antiretours sont constituées d'un clapet antiretour comprenant une paroi souple disposée en vis-à-vis du support rigide et montée en appui ou précontrainte en appui sur ledit support rigide auquel ledit clapet est relié par une liaison fixe. Le support rigide est ajouré d'au moins un passage disposé en vis-à-vis de la paroi souple. La valve d'entrée est constituée d'un clapet en appui sur le support rigide partie de la frette. La valve de sortie est constituée d'un clapet en appui sur le support rigide partie de la tige ou du bouton poussoir selon la solution retenue. Avant montage, le clapet dispose d'une zone périphérique en forme de cône. En position assemblée, ladite zone périphérique présente une déformation de type aplatissement et induisant une élongation consécutive à la mise en appui de la face intérieure de la grande base sur la paroi rigide. Cette élongation induit une force d'appui considérable, bien supérieure à une déformation non élastique, laquelle garantit l'étanchéité quand le système de distribution est « au repos » y compris si le contenant est en surpression. The invention thus makes it possible to merge with a common constituent a dosing function, that is to say the motor function performed by the push button and the pump, and a distribution function, that is to say conveying the fluid product from the container to an outlet orifice where the discharge channel opens, these functions being performed by means of three structural parts. The anti-return valves consist of a non-return valve comprising a flexible wall disposed opposite the rigid support and mounted in support or prestress bearing on said rigid support to which said valve is connected by a fixed connection. The rigid support is perforated with at least one passage disposed vis-à-vis the flexible wall. The inlet valve consists of a valve resting on the rigid support part of the hoop. The outlet valve consists of a valve resting on the rigid support part of the rod or the push button according to the selected solution. Before assembly, the valve has a conical peripheral zone. In the assembled position, said peripheral zone has a deformation of the flattening type and induces elongation subsequent to the bearing of the inner face of the large base on the rigid wall. This elongation induces a considerable bearing force, much greater than a non-elastic deformation, which ensures tightness when the dispensing system is "at rest" including if the container is overpressure.
Le système de distribution est « au repos » lorsque les pressions à l'intérieur du contenant et à l'intérieur de la pompe ainsi que la pression atmosphérique sont identiques.  The dispensing system is "idle" when the pressures inside the container and inside the pump and the atmospheric pressure are the same.
La variation de pression dans la chambre de distribution va déformer la paroi souple et permettre l'ouverture de la valve.  The pressure variation in the distribution chamber will deform the flexible wall and allow the opening of the valve.
Dans la présente description, « le clapet est relié à la paroi rigide par une liaison fixe non déformable » signifie que seulement une partie du clapet assurant la liaison à la paroi rigide est fixe et non déformable. Cette partie fixe, réalisée en polymère souple, est située au centre du clapet. La zone périphérique souple s'étend radialement vers l'extérieur à partir cette zone de fixation.  In the present description, "the valve is connected to the rigid wall by a fixed non-deformable connection" means that only a portion of the valve ensuring the connection to the rigid wall is fixed and not deformable. This fixed part, made of flexible polymer, is located in the center of the valve. The flexible peripheral zone extends radially outwardly from this attachment zone.
La zone de fixation pourra, par exemple, être constituée d'une cheminée souple partie du clapet emmanchée sur une tige rigide reliée à la paroi rigide. L'ensemble de la cheminée souple et de la tige rigide constitue un assemblage rigide et étanche. L'assemblage ainsi réalisé peut résister à une surpression amont supérieure à 6 bars. The attachment zone may, for example, consist of a flexible chimney part of the clamshell on a rigid rod connected to the rigid wall. The assembly of the flexible chimney and the rigid rod constitutes a rigid and waterproof assembly. The assembly thus produced can withstand an upstream pressure higher than 6 bars.
Ainsi, en position assemblée, la zone de fixation ne peut réaliser aucun mouvement en translation, en rotation ou en déformation de quelque type que ce soit par rapport à la paroi rigide.  Thus, in the assembled position, the fixing zone can not perform any movement in translation, rotation or deformation of any type with respect to the rigid wall.
Avantageusement, la pompe comprend une chambre de distribution constituée d'un piston coulissant dans un cylindre de pompe et un premier canal d'évacuation. La pompe fait ainsi fonction à la fois de pompe et de premier canal d'évacuation  Advantageously, the pump comprises a distribution chamber consisting of a piston sliding in a pump cylinder and a first evacuation channel. The pump thus acts as both pump and first evacuation channel
Avantageusement, la frette comprend le cylindre de la pompe, un premier moyen de liaison étanche du contenant au système de distribution ainsi que le support d'appui rigide du clapet de la valve d'entrée. La valve est constituée dudit clapet monté en appui sur ledit support d'appui rigide. La frette équipée du clapet d'entrée fait office cumulâtivement de liaison étanche entre le contenant dans lequel est conditionné le produit fluide et le système de distribution, de valve d'entrée dans la chambre de distribution, et enfin de cylindre premier élément constitutif de la chambre de distribution .  Advantageously, the hoop comprises the cylinder of the pump, a first sealing means of the container to the distribution system and the rigid bearing support of the valve of the inlet valve. The valve is constituted by said valve mounted to bear on said rigid support support. The hoop equipped with the inlet valve acts as a cumulative sealing connection between the container in which the fluid product is conditioned and the distribution system, the inlet valve in the distribution chamber, and finally the first component cylinder of the cylinder. distribution chamber.
Avantageusement, la tige comprend le piston, le premier canal d'évacuation, ainsi qu'un deuxième moyen de liaison étanche avec le bouton poussoir. La tige est creuse dans toute sa longueur pour constituer le premier canal d'évacuation du produit depuis la chambre de distribution jusqu'au bouton poussoir. De cette façon, la tige fait office de piston de la pompe, de premier conduit d'évacuation, et de liaison étanche avec le bouton poussoir.  Advantageously, the rod comprises the piston, the first discharge channel, and a second sealing means with the push button. The rod is hollow throughout its length to form the first product discharge channel from the dispensing chamber to the push button. In this way, the rod acts as a piston of the pump, the first exhaust pipe, and sealing connection with the push button.
Avantageusement, le bouton poussoir est relié à la tige par le deuxième moyen de liaison de ladite tige et comprend un deuxième canal d'évacuation. Le deuxième canal d'évacuation relie le premier canal d'évacuation logé dans la tige à l'orifice d'évacuation logée dans ledit bouton poussoir. Le bouton poussoir est relié de façon fixe à la tige de sorte que l'action de pression sur le bouton poussoir entraine le mouvement de la tige et par la même celle du piston dans le cylindre. Le bouton poussoir pourra par exemple être emboîté sur la tige. L'orifice d'évacuation constitue le débouché du deuxième canal d'évacuation sur l'extérieur. Advantageously, the push button is connected to the rod by the second connection means of said rod and comprises a second evacuation channel. The second evacuation channel connects the first discharge channel housed in the rod to the discharge port housed in said push button. The push button is fixedly connected to the rod so that the pressing action on the push button causes the movement of the rod and by the same that of the piston in the cylinder. The push button may for example be fitted on the rod. The outlet is the outlet of the second exhaust channel on the outside.
Selon un premier mode de réalisation, la tige comprend un support rigide disposé à l'extrémité de sortie du premier canal d'évacuation, et la valve de sortie est constituée du clapet monté en appui sur ledit support rigide. La tige comprend deux extrémités. Le piston est disposé à une première extrémité de la tige. L'extrémité de sortie est la deuxième extrémité de la tige. Dans ce mode de réalisation, la tige est un ensemble monobloc qui intègre le support d'appui rigide du clapet de la valve de sortie. Le support est constitué d'un épaulement disposé en sortie du premier canal d'évacuation. La tige est alors équipée d'un clapet en appui sur ledit support d'appui et la pompe est ainsi équipée de la valve de sortie. La valve de sortie est ainsi disposée en sortie de la chambre de distribution et le système de distribution est étanche à l'air depuis le contenant jusqu'à la sortie de la chambre de distribution. Cette première version présente l'avantage d'être plus économique car les valves d'entrée et de sortie sont identiques.  According to a first embodiment, the rod comprises a rigid support disposed at the outlet end of the first discharge channel, and the outlet valve is constituted by the valve mounted to bear on said rigid support. The stem has two ends. The piston is disposed at a first end of the rod. The exit end is the second end of the rod. In this embodiment, the rod is a one-piece assembly that integrates the rigid bearing support of the valve of the outlet valve. The support consists of a shoulder disposed at the outlet of the first evacuation channel. The rod is then equipped with a valve bearing on said support support and the pump is thus equipped with the outlet valve. The outlet valve is thus disposed at the outlet of the dispensing chamber and the dispensing system is airtight from the container to the outlet of the dispensing chamber. This first version has the advantage of being more economical because the inlet and outlet valves are identical.
Selon un deuxième mode de réalisation, une deuxième valve antiretour de sortie est disposée dans l'orifice d'évacuation, le bouton poussoir comprenant alors également un support rigide disposé dans l'orifice d'évacuation et la valve de sortie étant constituée du clapet monté en appui sur ledit support rigide. Le bouton poussoir est un ensemble monobloc qui intègre un support d'appui rigide du clapet de la deuxième valve de sortie. Ladite surface d'appui est constituée par l'extrémité libre d'une tige logée au centre de l'orifice d'évacuation, ladite tige étant monobloc avec le bouton poussoir. Le bouton poussoir est alors équipé d'un clapet logé dans l'orifice d'évacuation, la paroi souple du clapet est en appui sur le support d'appui constitué par ladite extrémité libre. La pompe est alors équipée d'une deuxième valve de sortie. Dans cette version la pompe est donc équipée de deux valves de sortie dont la première est disposée en sortie de la chambre de distribution et la deuxième est disposée dans l'orifice de sortie du système de distribution; la deuxième valve assure l'obturation dudit orifice d'évacuation. Cette version présente l'avantage d'une grande sécurité, les deux valves de sortie présentant une double barrière à l'air. La deuxième valve de sortie logée dans l'orifice étant en contact avec l'extérieur, peut se dégrader pour une raison de choc, de chute ou du fait d'une agression quelconque. Dans cette hypothèse, le système de distribution est toujours étanche à l'air jusqu'en sortie de la chambre de distribution. According to a second embodiment, a second outlet check valve is disposed in the discharge orifice, the push button then also comprising a rigid support disposed in the discharge orifice and the outlet valve consisting of the mounted valve. resting on said rigid support. The push button is a one-piece assembly that incorporates a rigid support support of the valve of the second outlet valve. Said bearing surface is constituted by the free end of a rod housed in the center of the discharge orifice, said rod being integral with the push button. The push button is then equipped with a valve housed in the discharge orifice, the flexible wall of the valve is supported on the bearing support formed by said free end. The pump is then equipped with a second outlet valve. In this version the pump is equipped with two outlet valves, the first of which is disposed at the outlet of the distribution chamber and the second is disposed in the outlet orifice of the dispensing system; the second valve ensures the closure of said discharge port. This version has the advantage of great safety, the two output valves having a double air barrier. The second outlet valve housed in the orifice being in contact with the outside, can degrade for a reason of shock, fall or because of any aggression. In this case, the distribution system is always airtight until the exit of the distribution chamber.
Selon un troisième mode de réalisation, le bouton poussoir comprend le support rigide disposé dans l'orifice d'évacuation, la valve de sortie étant constituée du clapet monté en appui sur ledit support rigide. Dans cette version la pompe est donc équipée d'une seule valve de sortie qui assure simultanément l'obturation de l'orifice d'évacuation. Elle présente l'avantage que le système de distribution est étanche depuis le contenant jusqu'à l'orifice de distribution.  According to a third embodiment, the push button comprises the rigid support disposed in the discharge orifice, the outlet valve being constituted by the valve mounted to bear on said rigid support. In this version the pump is therefore equipped with a single outlet valve which simultaneously ensures the closing of the discharge orifice. It has the advantage that the dispensing system is sealed from the container to the dispensing orifice.
L'invention concerne également un ensemble comprenant un système de distribution avec au moins une des caractéristiques précédentes. Il est caractérisé en ce que le système de distribution est fixé sur un contenant et en ce que l'ensemble est étanche à l'air extérieur depuis le contenant jusqu'à la valve de sortie de la pompe la plus en aval. L'ensemble est ainsi étanche du contenant jusqu'à la sortie du premier canal d'évacuation dans le premier mode de réalisation. L'ensemble est ainsi étanche du contenant jusqu'à l'orifice d'évacuation dans le deuxième et le troisième mode de réalisation . The invention also relates to an assembly comprising a distribution system with at least one of the preceding characteristics. It is characterized in that the dispensing system is fixed on a container and in that the assembly is airtight outside from the container to the outlet valve of the pump further downstream. The assembly is thus sealed from the container to the outlet of the first discharge channel in the first embodiment. The assembly is thus sealed from the container to the discharge port in the second and third embodiments.
D'autres avantages pourront encore apparaître à l'homme du métier à la lecture de l'exemple ci-dessous, illustrée par les figures annexées:  Other advantages may still appear to those skilled in the art on reading the example below, illustrated by the appended figures:
- La figure 1 représente une coupe d'un système de distribution de l'invention selon un premier mode de réalisation,  FIG. 1 represents a section of a distribution system of the invention according to a first embodiment,
- La figure 2 est une coupe d'un système de distribution de l'invention selon un deuxième mode de réalisation,  FIG. 2 is a section of a distribution system of the invention according to a second embodiment,
- La figure 3 est une coupe d'un système de distribution de l'invention selon un troisième mode de réalisation.  - Figure 3 is a section of a dispensing system of the invention according to a third embodiment.
Pour la suite de la description on considérera que le haut du système de distribution correspond au bouton poussoir et le bas à la frette en contact avec le contenant. Le produit circule depuis le contenant en amont du système de distribution jusqu'à l'orifice de sortie en aval dudit système de distribution. La valve disposée dans l'orifice de distribution est donc située en aval de la valve disposée en sortie du premier canal d'évacuation.  For the rest of the description, it will be considered that the top of the distribution system corresponds to the push button and the bottom to the band in contact with the container. The product flows from the container upstream of the dispensing system to the outlet port downstream of said dispensing system. The valve disposed in the dispensing orifice is therefore located downstream of the valve disposed at the outlet of the first evacuation channel.
Le système de distribution illustré figure 1, comprend une frette 2, un bouton poussoir 3, un ressort de rappel 4 constituant un système de rappel, une tige 5 et deux valves.  The dispensing system illustrated in FIG. 1 comprises a hoop 2, a push button 3, a return spring 4 constituting a return system, a rod 5 and two valves.
Les valves comprennent chacune un clapet 6 et 7 présentant une paroi souple 60 et 70 périphérique située en vis-à-vis du support rigide 24 partie intégrante de la frette 2 pour le clapet 6 et du support rigide 52 partie intégrante de la tige pour le clapet 7.  The valves each comprise a valve 6 and 7 having a flexible wall 60 and 70 peripheral located vis-à-vis the rigid support 24 integral part of the hoop 2 for the valve 6 and the rigid support 52 integral part of the rod for the flap 7.
Le support rigide est ajouré par au moins un orifice 6 ou 7 situé en vis-à-vis de la paroi souple du clapet.  The rigid support is pierced by at least one orifice 6 or 7 located opposite the flexible wall of the valve.
La valve est en position fermée lorsque la paroi souple périphérique 60 ou 70 du clapet est respectivement en contact avec le support rigide 24 ou 52 sur la totalité de son périmètre et en position ouverte lorsque la paroi souple périphérique 60 ou 70 du clapet est distante du support rigide sur au moins une partie de ce périmètre, le clapet 6 ou 7 et le support rigide 24 ou 52 constituant un ensemble étanche lorsque la paroi souple périphérique du clapet 6 ou 7 est en contact avec la totalité de son périmètre avec le support rigide 24 ou 52. The valve is in the closed position when the flexible peripheral wall 60 or 70 of the valve is respectively in contact with the rigid support 24 or 52 over its entire perimeter and in the open position when the flexible peripheral wall 60 or 70 of the valve is spaced from the rigid support on at least a part of this perimeter, the valve 6 or 7 and the rigid support 24 or 52 constituting a sealed assembly when the flexible flexible wall of the valve 6 or 7 is in contact with the whole of its perimeter with the rigid support 24 or 52.
Le clapet 6 ou 7 est relié respectivement au support rigide 24 ou 52 par une liaison fixe non déformable.  The valve 6 or 7 is respectively connected to the rigid support 24 or 52 by a fixed non-deformable connection.
La valve passe de la position fermée à la position ouverte par déformation de la zone périphérique du clapet 6 ou 7.  The valve moves from the closed position to the open position by deformation of the peripheral zone of the valve 6 or 7.
Tous les points de la zone périphérique du clapet 6 ou 7 en contact avec le support rigide 24 ou 52 sont en appui sur ledit support rigide, ledit appui étant obtenu par déformation élastique de ladite paroi souple 60 ou 70, ladite déformation résultant du montage du clapet 6 ou 7 sur le support rigide 24 ou 52.  All the points of the peripheral zone of the valve 6 or 7 in contact with the rigid support 24 or 52 bear on said rigid support, said support being obtained by elastic deformation of said flexible wall 60 or 70, said deformation resulting from the assembly of the valve 6 or 7 on the rigid support 24 or 52.
Avant montage, les parois souples 60, 70 des clapets antiretour 6 et 7 sont en forme de cône. Les parois souples 60, 70 vont se déformer lors du montage par la mise en appui et en contrainte de la face interne de la grande base du cône sur le support rigide 24 ou 52.  Before assembly, the flexible walls 60, 70 of the non-return valves 6 and 7 are cone-shaped. The flexible walls 60, 70 will deform during assembly by the support and stress of the inner face of the large base of the cone on the rigid support 24 or 52.
De préférence les clapets 6 et 7 sont identiques comme sur la figure 1.  Preferably the valves 6 and 7 are identical as in FIG.
Le système de rappel pourra par exemple être un ressort de compression de forme hélicoïdale, d'autres solutions étant possibles .  The return system may for example be a helically shaped compression spring, other solutions being possible.
La frette 2 est monobloc, par exemple constituée d'un bloc de plastique rigide obtenu en une opération de moulage. Elle présente une face 22 pour assurer une liaison étanche avec un contenant (non représenté) rempli d'un produit à distribuer et sensible à l'air. Elle comprend une ouverture 20 pour permettre le transfert du produit dans la chambre de distribution lorsque la valve est ouverte et un cylindre 21 qui constitue un premier élément de la chambre de distribution. The hoop 2 is monobloc, for example consisting of a rigid plastic block obtained in a molding operation. It has a face 22 to ensure a tight connection with a container (not shown) filled with a product to be dispensed and sensitive to air. It includes an opening 20 to allow the transfer of the product into the chamber of distribution when the valve is open and a cylinder 21 which constitutes a first element of the distribution chamber.
La tige 5 est également monobloc, elle comprend le piston (50) disposé à une première extrémité de ladite tige, ledit piston étant en contact étanche avec la paroi intérieure du cylindre 21, un anneau de guidage 53 et elle est percée sur toute sa longueur d'un conduit constituant un premier canal d'évacuation 51 qui la traverse de bas en haut de préférence en son centre depuis la première extrémité jusqu'à une deuxième extrémité dite extrémité 511 de sortie. Le premier canal d'évacuation 51 est fermé en partie haute de la tige 5 par le clapet 7 fixé en appui sur le support rigide 52 disposé à l'extrémité 511 de sortie de la tige (5) . Le volume interne du cylindre 21 délimité en haut par la face interne du piston 50 et en bas par le clapet 6 constitue une chambre de distribution 8. La chambre de distribution 8 est prolongée par le premier canal d'évacuation 51 à l'intérieur de la tige 5 puis le deuxième canal d'évacuation 31 à l'intérieur du bouton poussoir 3. La tige 5 est rendue solidaire du bouton poussoir 3 par emboîtement. Le clapet 7 est fixé sur le bouton poussoir 3 avant emboîtement du bouton poussoir 3 sur la tige 5.  The rod 5 is also monobloc, it comprises the piston (50) disposed at a first end of said rod, said piston being in sealing contact with the inner wall of the cylinder 21, a guide ring 53 and is pierced along its entire length a duct constituting a first evacuation channel 51 which passes through it from bottom to top, preferably at its center from the first end to a second end called the outlet end 511. The first discharge channel 51 is closed in the upper part of the rod 5 by the valve 7 fixedly bearing on the rigid support 52 disposed at the outlet end 511 of the rod (5). The internal volume of the cylinder 21 delimited at the top by the internal face of the piston 50 and at the bottom by the valve 6 constitutes a distribution chamber 8. The distribution chamber 8 is extended by the first evacuation channel 51 inside the the rod 5 and the second exhaust channel 31 inside the push button 3. The rod 5 is secured to the push button 3 by interlocking. The valve 7 is fixed on the push button 3 before interlocking the push button 3 on the rod 5.
Après assemblage, la tige 5 et le bouton poussoir 3 constituent un ensemble rigide, la paroi souple du clapet 7 prenant alors appui sur le support rigide 52 et obturant le canal d'évacuation (51) lorsque la valve est en position ouverte .  After assembly, the rod 5 and the push button 3 constitute a rigid assembly, the flexible wall of the valve 7 then bearing on the rigid support 52 and closing the discharge channel (51) when the valve is in the open position.
La tige 5 est mobile en translation dans le cylindre 21 entre deux positions, une position haute où une chambre de distribution 8 est de volume maximum et une position basse où la chambre de distribution 8 est de volume minimum. L'anneau de guidage 53 coopère avec la face intérieure du cylindre 21 pour garantir que la tige 21 se déplace dans une direction parfaitement coaxiale à l'axe longitudinal dudit cylindre. Ici Par ailleurs, le piston 50 présente un évidement 500 de forme complémentaire au clapet 6 pour permettre un emboîtement du piston 50 sur le clapet 6 et diminuer ainsi le volume minimum de la chambre de distribution 8. The rod 5 is movable in translation in the cylinder 21 between two positions, a high position where a distribution chamber 8 is of maximum volume and a low position where the distribution chamber 8 is of minimum volume. The guide ring 53 cooperates with the inner face of the cylinder 21 to ensure that the rod 21 moves in a direction perfectly coaxial with the longitudinal axis of said cylinder. Here, moreover, the piston 50 has a recess 500 of shape complementary to the valve 6 to allow an engagement of the piston 50 on the valve 6 and thus reduce the minimum volume of the distribution chamber 8.
La tige 5 est fixée au bouton poussoir 3 dans sa partie haute et la valve 7 est disposée à l'interface des canaux 51 et 31.  The rod 5 is attached to the push button 3 in its upper part and the valve 7 is disposed at the interface of the channels 51 and 31.
Le ressort 4 permet de maintenir le bouton poussoir 3 en position haute de repos, il est en appui sur une face 30 du bouton poussoir 3 d'un coté et sur une face 23 de la frette 2 de l'autre.  The spring 4 keeps the push button 3 in the high rest position, it is supported on one face 30 of the push button 3 on one side and on one face 23 of the hoop 2 of the other.
Le bouton poussoir 3 est percé d'un deuxième canal d'évacuation 31 complémentaire destiné à prolonger le premier canal 51 jusqu'à l'orifice 32.  The push button 3 is pierced with a second complementary discharge channel 31 intended to extend the first channel 51 to the orifice 32.
Dans le mode de réalisation illustré figure 3, le système de distribution comprend une valve de sortie constituée d'un clapet 9 présentant une paroi souple 90 disposée en vis- à-vis de l'extrémité libre d'une tige constituant le support d'appui rigide 33 de ladite paroi souple 90, ladite tige faisant partie intégrante du bouton poussoir 3.  In the embodiment illustrated in FIG. 3, the dispensing system comprises an outlet valve consisting of a valve 9 having a flexible wall 90 disposed opposite the free end of a rod constituting the support of rigid support 33 of said flexible wall 90, said rod being an integral part of the push button 3.
La paroi souple est ajourée d'un orifice 32 concentrique avec le support d'appui 33.  The flexible wall is perforated with a concentric orifice 32 with the support support 33.
L'orifice 32 a un contour sensiblement homothétique à celui du support d'appui 33 dans un plan P perpendiculaire à l'axe xx ' de la tige.  The orifice 32 has a substantially homothetic contour to that of the support support 33 in a plane P perpendicular to the axis xx 'of the rod.
L'orifice 32 a une surface inférieure à la surface projetée du support d'appui 33 dans le plan P.  The orifice 32 has a surface smaller than the projected surface of the support support 33 in the plane P.
La valve est en position fermée lorsque la paroi souple 90 est en contact avec le support d'appui rigide 33 sur la totalité du périmètre de l'orifice 32, et en position ouverte lorsque la paroi souple 90 est distante du support d'appui 33 sur au moins une partie du périmètre de l'orifice 32.  The valve is in the closed position when the flexible wall 90 is in contact with the rigid support support 33 over the entire perimeter of the orifice 32, and in the open position when the flexible wall 90 is distant from the support support 33 on at least a portion of the perimeter of the orifice 32.
Le clapet 9 et l'extrémité libre de la tige constituant le support d'appui 33 forment un ensemble étanche lorsque la paroi souple 90 est en contact avec le support d'appui 33 sur la totalité du périmètre de l'orifice 32. The valve 9 and the free end of the rod constituting the support support 33 form a sealed assembly when the flexible wall 90 is in contact with the support support 33 over the entire perimeter of the orifice 32.
Le clapet 9 est relié au bouton poussoir 3 par une liaison fixe non déformable.  The valve 9 is connected to the push button 3 by a non-deformable fixed link.
La valve passe de la position fermée à la position ouverte par déformation de la paroi souple 90.  The valve moves from the closed position to the open position by deformation of the flexible wall 90.
La paroi souple 90 est en appui sur le support d'appui 33 en tout point de sa surface en contact avec ledit support d ' appui .  The flexible wall 90 is supported on the support support 33 at any point on its surface in contact with said support support.
Ledit appui est obtenu par déformation élastique de ladite paroi souple 90, ladite déformation résultant du montage du clapet 9 dans le bouton poussoir 3.  Said support is obtained by elastic deformation of said flexible wall 90, said deformation resulting from mounting of the valve 9 in the push button 3.
Avant montage, la paroi souple 90 peut être en forme de cône inversé ouvert. Lors du montage, la paroi souple 90 se déforme et prend une forme sensiblement plane comme représenté sur la figure 3. Dans un mode de réalisation préféré le bouton poussoir 3 et la tige sont monobloc.  Before assembly, the flexible wall 90 may be inverted cone-shaped open. During assembly, the flexible wall 90 is deformed and takes a substantially flat shape as shown in Figure 3. In a preferred embodiment the push button 3 and the rod are monobloc.
Dans le mode de réalisation de la figure 2, le système de distribution comprend trois valves: une valve d'entrée et deux valves de sorties. La valve d'entrée est identique à celle des modes de réalisation représentés en figure 1 et figure 2. In the embodiment of Figure 2, the dispensing system comprises three valves: an inlet valve and two outlet valves. The inlet valve is identical to that of the embodiments shown in FIG. 1 and FIG.
La première valve de sortie est identique à la valve de sortie de la figure 1 et la deuxième valve de sortie est identique à la valve de sortie de la figure 3. The first outlet valve is identical to the outlet valve of Figure 1 and the second outlet valve is identical to the outlet valve of Figure 3.
Nous allons maintenant décrire le mode de fonctionnement de la pompe 1. Au repos, le bouton poussoir 3 est en position haute, les deux ou trois clapets 6, 7 et 9 sont fermés et la chambre de distribution 8 est de taille maximum, la pression est sensiblement identique dans le contenant, dans ladite chambre 8 et à l'extérieur, la surpression éventuelle à l'intérieur du contenant étant insuffisante pour ouvrir l'une des valves.  We will now describe the operating mode of the pump 1. At rest, the push button 3 is in the up position, the two or three valves 6, 7 and 9 are closed and the distribution chamber 8 is of maximum size, the pressure is substantially identical in the container, in said chamber 8 and outside, the possible pressure inside the container being insufficient to open one of the valves.
Lorsque l'utilisateur appuie sur le bouton poussoir 3, le piston 50 descend dans le cylindre 21, augmentant la pression dans la chambre de distribution 8. Cette augmentation de pression provoque l'ouverture d'un des clapets 7 ou 9 et la sortie du produit contenu dans la chambre de distribution. Lorsque l'utilisateur relâche le bouton poussoir 3 celui-ci remonte vers sa position haute sous l'effet du ressort 4. La remontée du piston 50 crée une dépression dans la chambre de distribution 8, ce qui provoque la fermeture du clapet de sortie 7 ou 9, l'ouverture du clapet 6 et le remplissage de la chambre de distribution 8. When the user presses the push button 3, the piston 50 descends into the cylinder 21, increasing the pressure in the distribution chamber 8. This increase in pressure causes the opening of one of the valves 7 or 9 and the outlet of the product contained in the distribution chamber. When the user releases the push button 3 it goes back to its high position under the effect of the spring 4. The rise of the piston 50 creates a vacuum in the distribution chamber 8, which causes the closure of the outlet valve 7 or 9, the opening of the valve 6 and the filling of the distribution chamber 8.
Selon la nature du produit conditionné dans le contenant, le volume de la dose peut varier dans des proportions très importantes.  Depending on the nature of the product packaged in the container, the volume of the dose may vary in very large proportions.
Dans le cas d'une dose minimum de 0,16 ml, par exemple pour doser une crème de soin du visage, le fabriquant impose une course de piston de 5 mm. Ces deux contraintes imposent que le diamètre intérieur du cylindre soit égal à 6,5 mm et que le diamètre du clapet avant déformation soit inférieur à 6 mm. On pourra, par exemple, avoir un clapet 6 ou 7 circulaire doté d'une zone centrale de fixation de 3,34 mm et d'un diamètre hors tout de 5,67 mm avant déformation, la zone de déformation étant un cône dont la petite base présente un diamètre de 3,34 mm et une grande base de 5,67 mm avant déformation.  In the case of a minimum dose of 0.16 ml, for example to dose a facial cream, the manufacturer imposes a piston stroke of 5 mm. These two constraints require that the inside diameter of the cylinder be equal to 6.5 mm and that the diameter of the valve before deformation is less than 6 mm. For example, it would be possible to have a circular valve 6 or 7 with a central fixing zone of 3.34 mm and an overall diameter of 5.67 mm before deformation, the deformation zone being a cone of which the small base has a diameter of 3.34 mm and a large base of 5.67 mm before deformation.
L'invention permet la miniaturisation de la pompe du système de distribution pour un dosage minimum, il est donc encore plus simple de réaliser l'application pour des doses beaucoup plus importantes en augmentant le diamètre du cylindre et du piston et celui du clapet.  The invention allows miniaturization of the pump dispensing system for a minimum dosage, it is therefore even simpler to achieve the application for much larger doses by increasing the diameter of the cylinder and the piston and that of the valve.
Les clapets 6, 7 et 9 seront réalisés de préférence dans un polymère souple doté d'une bonne mémoire de forme de type TPP, TEV ou SEBS ou éventuellement en PEBD .  The valves 6, 7 and 9 will preferably be made of a flexible polymer having a good shape memory of the TPP, TEV or SEBS type or possibly LDPE.
La tige 5 sera réalisée dans un polyéthylène, de préférence un PEL ou un PEBD.  The rod 5 will be made of a polyethylene, preferably a PEL or a LDPE.
Le bouton poussoir 3 et la frette 2 ne possèdent pas de propriétés mécaniques spécifiques et pourront être réalisés dans un polymère plus rigide de type PEHD ou polycarbonate. Un polypropylène pourra également être utilisé bien que ne possédant pas les propriétés barrière et d'aspect d'un PEHD. The push button 3 and the hoop 2 do not have specific mechanical properties and can be realized in a more rigid polymer of HDPE or polycarbonate type. Polypropylene may also be used although not having the barrier and appearance properties of HDPE.

Claims

REVENDICATIONS
1. Système de distribution destiné à être fixé sur un contenant dans lequel est conditionné un produit fluide, ledit système de distribution comprenant une pompe (1), deux valves antiretour respectivement d'entrée et de sortie, un moyen de rappel élastique (4) et un bouton poussoir (3), ladite pompe (1) étant mise en mouvement par le biais d'une action de poussée sur le bouton poussoir (3) relié à ladite pompe (1), caractérisé en ce que 1. Dispensing system intended to be fixed on a container in which a fluid product is conditioned, said dispensing system comprising a pump (1), two inlet and outlet check valves, an elastic return means (4) and a push button (3), said pump (1) being set in motion by a pushing action on the push button (3) connected to said pump (1), characterized in that
- il est constitué de trois pièces de structure monobloc : une tige (5), une frette (2) et le bouton poussoir (3) ; - It consists of three parts of one-piece structure: a rod (5), a hoop (2) and the push button (3);
- les trois pièces monoblocs supportent le moyen de rappel élastique (4) et coopèrent entre elles pour assurer la distribution du produit fluide sous l'effet de la poussée exercée sur le bouton poussoir (3) depuis le contenant jusqu'à un orifice d'évacuation (32) ; the three one-piece pieces support the elastic return means (4) and cooperate with one another to ensure the distribution of the fluid product under the effect of the thrust exerted on the push button (3) from the container to an orifice of evacuation (32);
- les deux valves antiretour d'entrée et de sortie sont constituées chacune d'un clapet (6, 7, 9) monté en appui sur un support rigide (24, 52, 33) auquel ledit clapet est relié par une liaison fixe ;  - Both inlet and outlet check valves are each constituted by a valve (6, 7, 9) mounted in abutment on a rigid support (24, 52, 33) to which said valve is connected by a fixed connection;
- au moins un clapet (6, 7) dispose d'une zone périphérique souple et déformable (70, 80) non ajourée, située en vis- à-vis du support rigide (24, 52) ;  - At least one valve (6, 7) has a flexible and deformable peripheral zone (70, 80) not perforated, located vis-à-vis the rigid support (24, 52);
— la paroi rigide est ajourée par au moins un orifice situé en vis-à-vis de la zone périphérique (70, 80) ; - The rigid wall is perforated by at least one orifice located vis-à-vis the peripheral zone (70, 80);
- la zone périphérique ( 70, 80) a une forme sensiblement conique avant montage avec une grande base, une petite base et une face intérieure du côté intérieur de la grande base du cône ;  - The peripheral zone (70, 80) has a substantially conical shape before mounting with a large base, a small base and an inner face of the inner side of the large base of the cone;
- ladite zone périphérique présente une déformation consécutive à la mise en appui de la face intérieure de la grande base sur le support rigide (24, 52) en position assemblée . said peripheral zone has a deformation consecutive to the bearing of the inner face of the large base on the rigid support (24, 52) in the assembled position.
2. Système de distribution selon la revendication 1 caractérisé en ce que la pompe (1) comprend une chambre de distribution constituée d'un piston (50) coulissant dans un cylindre de pompe (21) et un premier canal d'évacuation (51) . 2. Dispensing system according to claim 1 characterized in that the pump (1) comprises a distribution chamber consisting of a piston (50) sliding in a pump cylinder (21) and a first evacuation channel (51) .
3. Système de distribution selon l'une quelconque des revendications précédentes caractérisé en ce que la frette (2) comprend un cylindre de la pompe (21), un premier moyen de liaison étanche (22) du contenant au système de distribution ainsi que le support d'appui rigide (24) du clapet (6) de la valve d'entrée et en ce que la valve est constituée du clapet (6) monté en appui sur ledit support d'appui rigide (24) . 3. Dispensing system according to any one of the preceding claims characterized in that the hoop (2) comprises a cylinder of the pump (21), a first sealing means (22) of the container to the distribution system and the rigid support support (24) of the valve (6) of the inlet valve and in that the valve is constituted by the valve (6) mounted in abutment on said rigid support support (24).
4. Système de distribution selon l'une quelconque des revendications précédentes caractérisé en ce que la tige (5) comprend un piston (50), le premier canal d'évacuation (51) ainsi qu'un deuxième moyen de liaison étanche (54) avec le bouton poussoir (3).  4. Dispensing system according to any one of the preceding claims, characterized in that the rod (5) comprises a piston (50), the first evacuation channel (51) and a second sealing means (54). with the push button (3).
5. Système de distribution selon l'une quelconque des revendications précédentes caractérisé en ce que le bouton poussoir (3) est relié à la tige (5) par le deuxième moyen de liaison (54) de ladite tige (5) et comprend un deuxième canal d'évacuation (31). 5. Dispensing system according to any one of the preceding claims characterized in that the push button (3) is connected to the rod (5) by the second connection means (54) of said rod (5) and comprises a second evacuation channel (31).
6. Système de distribution selon une des revendications précédentes, caractérisé en ce que la tige (5) comprend un support rigide (52) disposé à une extrémité 511 de sortie du premier canal d'évacuation (51) et en ce que la valve de sortie est constituée du clapet (7) monté en appui sur ledit support rigide (52) . 6. Dispensing system according to one of the preceding claims, characterized in that the rod (5) comprises a rigid support (52) disposed at an outlet end 511 of the first discharge channel (51) and in that the valve of outlet consists of the valve (7) mounted on support on said rigid support (52).
7. Système de distribution selon la revendication précédente caractérisé en ce qu'une deuxième valve antiretour de sortie est disposée dans l'orifice d'évacuation (32), en ce que le bouton poussoir comprend également le support rigide (33) disposé dans l'orifice d'évacuation (32) et en ce que la valve de sortie est constituée du clapet (9) monté en appui sur ledit support rigide (33) . 7. Dispensing system according to the preceding claim characterized in that a second outlet check valve is disposed in the discharge port (32), in that the push button also comprises the rigid support (33) disposed in the discharge port (32) and in that the outlet valve is constituted by the valve (9) mounted in abutment on said rigid support (33).
8. Système de distribution selon une des revendications 1 à 5, caractérisé en ce que le bouton poussoir comprend le support rigide (33) disposé dans l'orifice d'évacuation (32), et en ce que la valve de sortie est constituée du clapet (9) monté en appui sur ledit support rigide ( 33 ) . 8. Dispensing system according to one of claims 1 to 5, characterized in that the push button comprises the rigid support (33) disposed in the discharge orifice (32), and in that the outlet valve consists of the valve (9) mounted to bear on said rigid support (33).
9. Ensemble comprenant un système de distribution selon l'une quelconque des revendications précédentes, caractérisé en ce que le système de distribution est fixé sur un contenant et en ce que l'ensemble est étanche à l'air extérieur depuis le contenant jusqu'à la valve de sortie de la pompe la plus en aval. 9. An assembly comprising a dispensing system according to any one of the preceding claims, characterized in that the dispensing system is attached to a container and in that the assembly is sealed to the outside air from the container to the outlet valve of the pump furthest downstream.
PCT/FR2016/052407 2015-09-22 2016-09-22 Airless dispensing system having a pump WO2017051126A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16785209.4A EP3352913B1 (en) 2015-09-22 2016-09-22 Airless dispensing system with a pump

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR1558948 2015-09-22
FR1558948A FR3041410A1 (en) 2015-09-22 2015-09-22 AIR-FREE DISTRIBUTION SYSTEM WITH PUMP
FR1560103A FR3041413B1 (en) 2015-09-22 2015-10-22 AIR-FREE DISTRIBUTION SYSTEM WITH PUMP
FR1560103 2015-10-22

Publications (1)

Publication Number Publication Date
WO2017051126A1 true WO2017051126A1 (en) 2017-03-30

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PCT/FR2016/052407 WO2017051126A1 (en) 2015-09-22 2016-09-22 Airless dispensing system having a pump

Country Status (3)

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EP (1) EP3352913B1 (en)
FR (2) FR3041410A1 (en)
WO (1) WO2017051126A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022029374A1 (en) 2020-08-06 2022-02-10 Cep Sealed assembly for a flexible pumping membrane and a rigid end piece of a pump of a system for airless dispensing of a liquid or paste product

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696480A1 (en) * 1994-08-11 1996-02-14 S O F A B Société Anonyme Membrane pump
WO1997023304A1 (en) * 1995-12-22 1997-07-03 Valois S.A. Precompression pump formed within the pusher element
EP2006028A1 (en) * 2007-06-20 2008-12-24 Rexam Dispensing Systems Pump for dispensing a liquid product with improved priming
DE102008030118A1 (en) * 2007-07-02 2009-01-08 Rpc Bramlage Gmbh Dispenser for liquids or pastes has closing plug surrounded at spacing by annular head part fixed to housing, forming external surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696480A1 (en) * 1994-08-11 1996-02-14 S O F A B Société Anonyme Membrane pump
WO1997023304A1 (en) * 1995-12-22 1997-07-03 Valois S.A. Precompression pump formed within the pusher element
EP2006028A1 (en) * 2007-06-20 2008-12-24 Rexam Dispensing Systems Pump for dispensing a liquid product with improved priming
DE102008030118A1 (en) * 2007-07-02 2009-01-08 Rpc Bramlage Gmbh Dispenser for liquids or pastes has closing plug surrounded at spacing by annular head part fixed to housing, forming external surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022029374A1 (en) 2020-08-06 2022-02-10 Cep Sealed assembly for a flexible pumping membrane and a rigid end piece of a pump of a system for airless dispensing of a liquid or paste product
FR3113253A1 (en) 2020-08-06 2022-02-11 Cep ASSEMBLY OF A FLEXIBLE PUMPING DIAPHRAGM AND A RIGID END OF A PUMP FOR AN AIRLESS DISTRIBUTION SYSTEM FOR A LIQUID OR PASTY PRODUCT

Also Published As

Publication number Publication date
FR3041413B1 (en) 2018-04-20
FR3041410A1 (en) 2017-03-24
EP3352913B1 (en) 2020-06-03
EP3352913A1 (en) 2018-08-01
FR3041413A1 (en) 2017-03-24

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