EP2723504A1 - System for closing a device for the low-pressure dispensing of a pasty liquid material - Google Patents

System for closing a device for the low-pressure dispensing of a pasty liquid material

Info

Publication number
EP2723504A1
EP2723504A1 EP12731063.9A EP12731063A EP2723504A1 EP 2723504 A1 EP2723504 A1 EP 2723504A1 EP 12731063 A EP12731063 A EP 12731063A EP 2723504 A1 EP2723504 A1 EP 2723504A1
Authority
EP
European Patent Office
Prior art keywords
elastically deformable
membrane
shutter
return member
stage
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
EP12731063.9A
Other languages
German (de)
French (fr)
Other versions
EP2723504B1 (en
Inventor
Gwénaël DOULIN
Pascal Hennemann
Dominique Rusconi
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.)
Promens SA
Original Assignee
Promens SA
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 Promens SA filed Critical Promens SA
Priority to PL12731063T priority Critical patent/PL2723504T3/en
Publication of EP2723504A1 publication Critical patent/EP2723504A1/en
Application granted granted Critical
Publication of EP2723504B1 publication Critical patent/EP2723504B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
    • 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • B05B11/1061—Pump priming means
    • 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
    • B05B11/01—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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1036—Pumps having a pumping chamber with a deformable wall the outlet valve being opened in the direction opposite to the fluid flow downstream the outlet valve by the pressure acting on a valve controlling element
    • 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

Definitions

  • the present invention relates to a dispensing device provided with an end closure system, for liquid pasty products that do not contain preservatives, consisting of a pump and a push button provided with a closure. end.
  • this type of pump has the disadvantage of requiring low end closing forces which result in the use of large closure valves and valve return members adapted to low pressures, making them more sensitive to differences. external atmospheric pressure. This can cause a inadvertent opening of the valves, causing the accidental distribution of the product and / or accidental bacterial back contamination of the product because the product is not protected by anti-bacterial preservatives.
  • the latter type of pump is intended to be put in place at the open end of a rigid or flexible container containing the product to be dispensed in a predetermined amount.
  • Said pump comprises, generally:
  • a push button mounted telescopically on the base element comprising
  • An end closure system ensuring the operation of said pump and consisting of: - a low non-return valve in connection with the base element, allowing the passage of the product to
  • a dosing chamber composed of the elastically deformable bellows and of variable volume, communicating with
  • a high non-return valve consecutively constituted by: a shutter of the nozzle duct ensuring the end closure; an elastically deformable membrane capable of being biased by the product during actuation of the pump for opening the shutter; a reminder auxiliary adapted to low pressures soliciting closure of the shutter and a sealed tank.
  • the elastically deformable membrane constituting the top valve is associated with a tank which it closes hermetically, and inside which is arranged axially the auxiliary return member, in permanent connection with the membrane and comprising two elastically deformable stages according to different characteristics, the first stage maintaining a permanent restoring force of predetermined value against said membrane, and therefore on the shutter of the duct beak, the second stage being interposed between the first stage and the bottom of the tank, and maintaining a restoring force greater than that of the first stage, acting only when the membrane is stressed, or vice versa.
  • the present invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
  • FIG. 2 in a first phase of the priming of the pump, that is to say in pushing Fl on the push button downwards, which causes a reduction in the volume of the compression chamber of the bellows and an opening of the high valve by increasing the air pressure on the membrane itself causing the compression of the auxiliary return member;
  • FIG. 3 in a second phase of the priming of the pump, that is to say in the low position state of the push button, where the top valve closes by reducing on the one hand the pressure of the air on the membrane and secondly the force exerted by the auxiliary return member;
  • FIG. 4 in a third phase of the priming of the pump, that is to say in raising F2 of the push button under the action of the elastic restoring force of the bellows, having the effect of increasing the volume the metering chamber, creating a vacuum in the same chamber, and opening the bottom valve, allowing the product to go back into the metering chamber, constituted by the bellows; this same depression has the effect of reinforcing the closure of the high valve by action on its elastically deformable membrane;
  • FIG. 5 in a fourth phase of priming the pump, that is to say during the first dispensing of the product, by pushing again, according to F3, the push button down which causes a decrease in the volume of the dosing chamber by compression of the bellows and an opening of the upper valve by increasing the pressure of the product to be dispensed on the membrane itself causing the compression of the auxiliary return member and the outlet of the product by the dispensing spout;
  • FIG. 6 in a fifth and last phase of the priming, that is to say in the low position state of the push button, where the top valve closes by decreasing on the one hand the pressure of the product to distribute on the membrane and on the other hand the force exerted by the auxiliary return member.
  • the device is waiting for a new product distribution by pressing the push-button downwards along F4, and then going up again along F5.
  • the device 1 generally designated in the figures is intended for dispensing a liquid pasty product 2, via a metering pump 5 provided with an end closure system 32 placed in place at the open end 3 of a rigid or flexible container 4 containing the product 2 to be dispensed, in a predetermined amount.
  • the manual low pressure dosing pump 5 comprises:
  • an elastically deformable bellows 9 defining a metering chamber 10 arranged in connection with a pushbutton 7 mounted telescopically on the base element 6, comprising
  • an end closure system 32 ensuring the operation of said pump and consisting of:
  • a metering chamber 10 composed of elastically deformable and variable volume bellows 9, communicating with
  • a high non-return valve 14 consecutively constituted by: a shutter 16 of the duct 13 of the spout 8 ensuring the end closure 32; an elastically deformable membrane 15 capable of being biased by the product 2 during the actuation of the pump 5 for opening the shutter 16; an auxiliary return member 17 adapted to the low pressures urging closure of the shutter 16 and a hermetic tank 18.
  • the elastically deformable membrane 15 constituting the top valve 14 is associated with a tank 18 which it closes tightly and within which is disposed axially the auxiliary return member 17.
  • the latter is in permanent connection with the membrane 15 and comprises two stages 19,20 elastically deformable according to different characteristics.
  • the first stage 19 maintains a permanent restoring force of predetermined value against said membrane 15, and consequently on the shutter 16 of the duct 13 of the spout 8.
  • the second stage 20 is interposed between the first stage 19 and the bottom 21 of the tank 18, and maintains a higher restoring force than that of the first stage 19, acting only when the membrane 15 is stressed, or vice versa.
  • the first and second stages 19,20 could be of different characteristics, but identical geometries; but according to the present embodiment, they are of different characteristics and different geometries.
  • the first and second stages 19, 20 forming the auxiliary return member 17 come from a central core 22, the first stage 19 extending radially around it, first having a zone inner peripheral 23 of elastic articulation, close to the core 22, extending by an outer peripheral zone 24 bearing on the inner wall 25 of the vessel 18, the second stage 20 extending axially from the same central core 22, by forming a bell whose inner peripheral zone 26 near the core 22 constitutes an elastic articulation extending by an outer peripheral zone 27, resting on the bottom 21 of the vessel 18 and able to bear also on the inner wall 28 of the when the membrane 13 is stressed.
  • the tank 18 being hermetically sealed, it is established that, when the device is at rest, the pressure P2 of the tank 18 is equivalent to the ambient air pressure at the time of the initial assembly of the device. 1, that is to say equivalent to the atmospheric pressure.
  • the container 4 necessarily having a variable volume by its function without air intake and that the bottom valve 11 can not be perfectly sealed, it is established that the pressure P3 of the metering chamber 12 follows the evolution of the pressure of the IP environment.
  • the pressure P3 of the chamber of dosage decreases and becomes lower than the initial atmospheric pressure, and therefore P2 that remains invariable and therefore equivalent to the atmospheric pressure because kept tightly in the tank 18.
  • the pressure difference between P3 and P2 generates a force on the membrane 15, thus reinforcing the support on the shutter 16, and therefore 1 sealing.
  • the outer peripheral zones 24,27 of the first and second stages 19,20 of the auxiliary return member 17 extending their inner peripheral zones 23,26 are continuous.
  • the auxiliary return member 17 consisting of the first and second stages 19,20 is made integrally by molding a thermoplastic elastomer (TPE) or thermoplastic vulcanized (TPV) or silicone-based material or any other material with characteristics Similar.
  • TPE thermoplastic elastomer
  • TPV thermoplastic vulcanized
  • thermoplastic elastomer TPE
  • thermoplastic vulcanized TPV
  • silicone any other material with similar characteristics.
  • the elastically deformable membrane 15 forming a portion of the top valve 14 is reinforced by an inner rigid core 29 opening from said membrane 15 and in mechanical connection with the first stage 19 of the auxiliary return member 17.
  • the elastically deformable membrane 15 and its shutter 16 forming part of the top valve 14 and the inner rigid core 29 are obtained by bi-material injection.
  • the elastically deformable membrane 15 forming a portion of the top valve 14 is held in clamping against the tank 18, between a shoulder 30 of the push button 7 and a peripheral zone 31 of said tank 18.
  • the material constituting the push button 7, the elastically deformable membrane 15, the elastically deformable bellows 9, the bottom valve 11 and the base element 6 comprise antibacterial agents.

Abstract

The invention relates to a device (1) for dispensing a pasty liquid material (2) by means of a low-pressure manual metering pump (5), which is provided with an system for closing an end (32), and which is intended for a rigid or flexible container (4), the operation of said pump being ensured by: a lower check valve (11) and a metering chamber (10) which consists of a resiliently deformable bellows (9) and which is in communication with an upper valve (14) consisting of, in series: a stopper (16) for the channel (13) of the spout (8), which ensures that the end (32) is closed; a resiliently deformable diaphragm (15) enabling the stopper (16) to be opened; an auxiliary return member (17) suitable for the low pressures causing the closing of the stopper (16); and a sealed vessel (18), characterized in that the resiliently deformable diaphragm (15) is combined with the vessel (18) that said diaphragm seals, wherein the auxiliary return member (17) is arranged inside said vessel so as to be permanently linked to the diaphragm (15), and said vessel includes two levels (19, 20) that are resiliently deformable according to various characteristics.

Description

SYSTEME DE FERMETURE D ' UN DISPOSITIF DE DISTRIBUTION A BASSE PRESSIONCLOSURE SYSTEM OF A LOW PRESSURE DISTRIBUTION DEVICE
D'UN PRODUIT LIQUIDE A PATEUX A PASTA LIQUID PRODUCT
La présente invention concerne un dispositif de distribution muni d'un système de fermeture d'extrémité, pour des produits liquides à pâteux qui ne contiennent pas de conservateurs, composé d'une pompe et d'un bouton poussoir muni d'une fermeture d ' extrémité . The present invention relates to a dispensing device provided with an end closure system, for liquid pasty products that do not contain preservatives, consisting of a pump and a push button provided with a closure. end.
Il est connu de distribuer ce type de produits au moyen de pompes fonctionnant par haute pression, notamment dans le domaine de la pharmacie, par exemple dans le cas des sprays nasals sans conservateurs. Ces pompes ont des pressions de fonctionnement allant de 3 à 7 bars. Ceci a pour inconvénient de distribuer des petites doses (inférieures à 0.5 ml) du fait des faibles sections des chambres de dosage nécessaires pour générer les hautes pressions. It is known to distribute this type of products by means of pumps operating by high pressure, especially in the field of pharmacy, for example in the case of nasal sprays without preservatives. These pumps have operating pressures ranging from 3 to 7 bar. This has the disadvantage of distributing small doses (less than 0.5 ml) because of the small sections of the metering chambers needed to generate the high pressures.
Mais certains produits et certaines utilisations nécessitent un dosage plus important. C'est pourquoi dans ces cas là, on recourt à des pompes fonctionnant par basse pression, c'est à dire inférieure à 2 bars. But some products and uses require a higher dosage. This is why in these cases, we use pumps operating at low pressure, that is to say less than 2 bar.
Néanmoins ce type de pompe présente 1 ' inconvénient de nécessiter de faibles forces de fermeture d'extrémité qui entraînent l'utilisation de clapets de fermeture de grandes dimensions et d'organes de rappel de clapets adaptés aux basses pressions, les rendant plus sensibles aux différences de pression atmosphérique externe. Ceci peut provoquer une ouverture intempestive des clapets, provoquant la distribution accidentelle du produit et/ou la rétro- contamination bactérienne accidentelle du produit car le produit n'est pas protégé par des conservateurs anti-bactériens. Nevertheless, this type of pump has the disadvantage of requiring low end closing forces which result in the use of large closure valves and valve return members adapted to low pressures, making them more sensitive to differences. external atmospheric pressure. This can cause a inadvertent opening of the valves, causing the accidental distribution of the product and / or accidental bacterial back contamination of the product because the product is not protected by anti-bacterial preservatives.
Ce dernier type de pompe est destiné à être mis en place à l'extrémité ouverte d'un contenant rigide ou souple renfermant le produit à distribuer selon une quantité prédéterminée. The latter type of pump is intended to be put in place at the open end of a rigid or flexible container containing the product to be dispensed in a predetermined amount.
Ladite pompe comprend, d'une manière générale :Said pump comprises, generally:
- un élément de base rapporté sur le contenant,- a basic element attached to the container,
- un soufflet élastiquement déformable définissant une chambre de dosage disposé en liaison avec an elastically deformable bellows defining a metering chamber arranged in connection with
- un bouton poussoir monté télescopiquement sur l'élément de base, comprenant  a push button mounted telescopically on the base element, comprising
- un système de fermeture d'extrémité, assurant le fonctionnement de ladite pompe et constitué par : - un clapet bas anti-retour en liaison avec l'élément de base, permettant le passage du produit vers  - An end closure system, ensuring the operation of said pump and consisting of: - a low non-return valve in connection with the base element, allowing the passage of the product to
- une chambre de dosage, composée par le soufflet élastiquement déformable et à volume variable, communiquant avec  a dosing chamber, composed of the elastically deformable bellows and of variable volume, communicating with
- un clapet haut anti-retour constitué consécutivement par : un obturateur du conduit du bec assurant la fermeture d'extrémité ; une membrane élastiquement déformable susceptible d'être sollicitée en déformation par le produit lors de 1 ' actionnement de la pompe permettant d'ouvrir l'obturateur; un organe de rappel auxiliaire adapté aux basses pressions sollicitant la fermeture de l'obturateur et une cuve hermétique . Selon l'invention, de manière à remédier aux inconvénients cités initialement, dans les dispositifs de ce type, la membrane élastiquement déformable constituant le clapet haut est associée à une cuve qu'elle ferme hermétiquement, et à l'intérieur de laquelle est disposé axialement l'organe de rappel auxiliaire, en liaison permanente avec la membrane et comprenant deux étages déformables élastiquement selon des caractéristiques différentes, le premier étage entretenant une force de rappel permanente de valeur prédéterminée contre ladite membrane, et par conséquent sur l'obturateur du conduit du bec, le second étage étant interposé entre le premier étage et le fond de la cuve, et entretenant une force de rappel supérieure à celle du premier étage, n'agissant que lorsque la membrane est sollicitée, ou inversement. - A high non-return valve consecutively constituted by: a shutter of the nozzle duct ensuring the end closure; an elastically deformable membrane capable of being biased by the product during actuation of the pump for opening the shutter; a reminder auxiliary adapted to low pressures soliciting closure of the shutter and a sealed tank. According to the invention, so as to overcome the drawbacks mentioned initially, in devices of this type, the elastically deformable membrane constituting the top valve is associated with a tank which it closes hermetically, and inside which is arranged axially the auxiliary return member, in permanent connection with the membrane and comprising two elastically deformable stages according to different characteristics, the first stage maintaining a permanent restoring force of predetermined value against said membrane, and therefore on the shutter of the duct beak, the second stage being interposed between the first stage and the bottom of the tank, and maintaining a restoring force greater than that of the first stage, acting only when the membrane is stressed, or vice versa.
La présente invention concerne également les caractéristiques qui ressortiront au cours de la description qui va suivre, et qui devront être considérées isolément ou selon toutes leurs combinaisons techniques possibles. The present invention also relates to the features which will emerge during the following description, which should be considered in isolation or in all their possible technical combinations.
Cette description donnée à titre d'exemple non limitatif, fera mieux comprendre comment l'invention peut être réalisée en référence aux dessins annexés sur lesquels : L'ensemble des figures sont des vues en coupe axiale d'une pompe de distribution selon l'invention, disposée sur un contenant d'un produit à distribuer et la montrant selon : This description given by way of nonlimiting example, will better understand how the invention can be made with reference to the accompanying drawings in which: All the figures are views in axial section of a dispensing pump according to the invention, arranged on a container of a product to be dispensed and showing it according to:
la figure 1 : avant une première utilisation ;  Figure 1: before a first use;
la figure 2 : dans une première phase de l'amorçage de la pompe, c'est-à-dire en poussée Fl sur le bouton poussoir vers le bas, qui entraine une diminution du volume de la chambre de dosage par compression du soufflet et une ouverture du clapet haut par augmentation de la pression d'air sur la membrane entraînant elle-même la compression de l'organe de rappel auxiliaire ;  FIG. 2: in a first phase of the priming of the pump, that is to say in pushing Fl on the push button downwards, which causes a reduction in the volume of the compression chamber of the bellows and an opening of the high valve by increasing the air pressure on the membrane itself causing the compression of the auxiliary return member;
la figure 3 : dans une seconde phase de l'amorçage de la pompe, c'est-à-dire à l'état de position basse du bouton poussoir, où le clapet haut se referme par diminution d'une part de la pression d'air sur la membrane et d'autre part de la force exercée par l'organe de rappel auxiliaire ;  FIG. 3: in a second phase of the priming of the pump, that is to say in the low position state of the push button, where the top valve closes by reducing on the one hand the pressure of the air on the membrane and secondly the force exerted by the auxiliary return member;
la figure 4 : dans une troisième phase de l'amorçage de la pompe, c'est-à-dire en remontée F2 du bouton poussoir sous l'action de la force de rappel élastique du soufflet, ayant pour effet d'augmenter le volume de la chambre de dosage, créant une dépression dans cette même chambre, et ouvrant le clapet bas, permettant au produit de remonter dans la chambre de dosage, constituée par le soufflet ; cette même dépression a pour effet de renforcer la fermeture du clapet haut par action sur sa membrane élastiquement déformable ;  FIG. 4: in a third phase of the priming of the pump, that is to say in raising F2 of the push button under the action of the elastic restoring force of the bellows, having the effect of increasing the volume the metering chamber, creating a vacuum in the same chamber, and opening the bottom valve, allowing the product to go back into the metering chamber, constituted by the bellows; this same depression has the effect of reinforcing the closure of the high valve by action on its elastically deformable membrane;
la figure 5 : dans une quatrième phase de l'amorçage de la pompe, c'est-à-dire en cours de la première distribution du produit, en repoussant une nouvelle fois, selon F3, le bouton poussoir vers le bas qui entraine une diminution du volume de la chambre de dosage par compression du soufflet et une ouverture du clapet haut par augmentation de la pression du produit à distribuer sur la membrane entraînant elle- même la compression de l'organe de rappel auxiliaire et la sortie du produit par le bec de distribution ; FIG. 5: in a fourth phase of priming the pump, that is to say during the first dispensing of the product, by pushing again, according to F3, the push button down which causes a decrease in the volume of the dosing chamber by compression of the bellows and an opening of the upper valve by increasing the pressure of the product to be dispensed on the membrane itself causing the compression of the auxiliary return member and the outlet of the product by the dispensing spout;
la figure 6 : dans une cinquième et dernière phase de l'amorçage, c'est-à-dire à l'état de position basse du bouton poussoir, où le clapet haut se referme par diminution d'une part de la pression du produit à distribuer sur la membrane et d'autre part de la force exercée par l'organe de rappel auxiliaire. Après cette dernière phase et la remontée du bouton poussoir selon F5 comme décrit à la figure 4, le dispositif est en attente d'une nouvelle distribution de produit par appui sur le bouton poussoir vers le bas selon F4, et sa remontée ensuite selon F5.  FIG. 6: in a fifth and last phase of the priming, that is to say in the low position state of the push button, where the top valve closes by decreasing on the one hand the pressure of the product to distribute on the membrane and on the other hand the force exerted by the auxiliary return member. After this last phase and the raising of the push-button according to F5 as described in FIG. 4, the device is waiting for a new product distribution by pressing the push-button downwards along F4, and then going up again along F5.
Le dispositif 1 globalement désigné sur les figures est destiné à la distribution d'un produit liquide à pâteux 2, par l'intermédiaire d'une pompe de dosage 5 muni d'un système de fermeture d'extrémité 32 mis en place à l'extrémité ouverte 3 d'un contenant rigide ou souple 4 renfermant le produit 2 à distribuer, selon une quantité prédéterminée. The device 1 generally designated in the figures is intended for dispensing a liquid pasty product 2, via a metering pump 5 provided with an end closure system 32 placed in place at the open end 3 of a rigid or flexible container 4 containing the product 2 to be dispensed, in a predetermined amount.
La pompe manuelle de dosage 5 à basse pression comprend : The manual low pressure dosing pump 5 comprises:
- un élément de base 6 rapporté sur le contenant 4, un soufflet 9 élastiquement déformable définissant une chambre de dosage 10 disposé en liaison avec un bouton poussoir 7 monté télescopiquement sur l'élément de base 6, comprenant a base element 6 attached to the container 4, an elastically deformable bellows 9 defining a metering chamber 10 arranged in connection with a pushbutton 7 mounted telescopically on the base element 6, comprising
un système de fermeture d'extrémité 32, assurant le fonctionnement de ladite pompe et constitué par :  an end closure system 32, ensuring the operation of said pump and consisting of:
un clapet bas anti-retour 11 en liaison avec l'élément de base 6, permettant le passage du produit 2 vers  a low check valve 11 in connection with the base element 6, allowing the passage of the product 2 to
une chambre de dosage 10, composée par le soufflet 9 élastiquement déformable et à volume variable, communiquant avec  a metering chamber 10, composed of elastically deformable and variable volume bellows 9, communicating with
un clapet haut anti-retour 14 constitué consécutivement par : un obturateur 16 du conduit 13 du bec 8 assurant la fermeture d'extrémité 32 ; une membrane 15 élastiquement déformable susceptible d'être sollicitée en déformation par le produit 2 lors de 1 ' actionnement de la pompe 5 permettant d'ouvrir l'obturateur 16 ; un organe de rappel auxiliaire 17 adapté aux basses pressions sollicitant la fermeture de l'obturateur 16 et une cuve hermétique 18. Selon l'invention, la membrane élastiquement déformable 15 constituant le clapet haut 14 est associée à une cuve 18 qu'elle ferme hermétiquement, et à l'intérieur de laquelle est disposé axialement l'organe de rappel auxiliaire 17. Celui-ci est en liaison permanente avec la membrane 15 et comprend deux étages 19,20 déformables élastiquement selon des caractéristiques différentes. Le premier étage 19 entretient une force de rappel permanente de valeur prédéterminée contre ladite membrane 15, et par conséquent sur l'obturateur 16 du conduit 13 du bec 8. Le second étage 20 est interposé entre le premier étage 19 et le fond 21 de la cuve 18, et entretient une force de rappel supérieure à celle du premier étage 19, n'agissant que lorsque la membrane 15 est sollicitée, ou inversement. a high non-return valve 14 consecutively constituted by: a shutter 16 of the duct 13 of the spout 8 ensuring the end closure 32; an elastically deformable membrane 15 capable of being biased by the product 2 during the actuation of the pump 5 for opening the shutter 16; an auxiliary return member 17 adapted to the low pressures urging closure of the shutter 16 and a hermetic tank 18. According to the invention, the elastically deformable membrane 15 constituting the top valve 14 is associated with a tank 18 which it closes tightly and within which is disposed axially the auxiliary return member 17. The latter is in permanent connection with the membrane 15 and comprises two stages 19,20 elastically deformable according to different characteristics. The first stage 19 maintains a permanent restoring force of predetermined value against said membrane 15, and consequently on the shutter 16 of the duct 13 of the spout 8. The second stage 20 is interposed between the first stage 19 and the bottom 21 of the tank 18, and maintains a higher restoring force than that of the first stage 19, acting only when the membrane 15 is stressed, or vice versa.
Les premier et second étages 19,20 pourraient être de caractéristiques différentes, mais de géométries identiques ; mais selon le présent exemple de réalisation, ils sont de caractéristiques différentes et de géométries différentes. The first and second stages 19,20 could be of different characteristics, but identical geometries; but according to the present embodiment, they are of different characteristics and different geometries.
C'est ainsi que les premier et second étages 19,20 formant l'organe de rappel auxiliaire 17 sont issus d'un noyau central 22, le premier étage 19 s' étendant radialement autour de celui-ci en présentant d'abord une zone périphérique interne 23 d'articulation élastique, proche du noyau 22, se prolongeant par une zone périphérique 24 externe venant en appui sur la paroi interne 25 de la cuve 18, le second étage 20 s' étendant axialement à partir du même noyau central 22, en formant une cloche dont la zone périphérique interne 26 proche du noyau 22 constitue une articulation élastique se prolongeant par une zone périphérique externe 27, en appui sur le fond 21 de la cuve 18 et susceptible de prendre appui également sur la paroi interne 28 de celle-ci lorsque la membrane 13 est sollicitée. D'une part, la cuve 18 étant fermée hermétiquement, il est établi que, lorsque le dispositif est au repos, la pression P2 de la cuve 18 est équivalente à la pression de l'air ambiant au moment de l'assemblage initial du dispositif 1, c'est- à-dire équivalente à la pression atmosphérique. D'autre part, le contenant 4 ayant nécessairement un volume variable de par sa fonction sans reprise d'air et que le clapet bas 11 ne peut être parfaitement étanche, il est établi que la pression P3 de la chambre de dosage 12 suit l'évolution de la pression de l'environnement PI . De ce fait, lorsque le bouton poussoir 7 remonte ou lorsque le dispositif 1 est placé dans un environnement à faible pression PI (PI inférieure à la pression atmosphérique), par exemple lors d'un trajet en avion, la pression P3 de la chambre de dosage diminue et devient inférieure à la pression atmosphérique initiale, et donc à P2 qui reste invariable et donc équivalente à la pression atmosphérique car maintenue hermétiquement dans la cuve 18. Thus, the first and second stages 19, 20 forming the auxiliary return member 17 come from a central core 22, the first stage 19 extending radially around it, first having a zone inner peripheral 23 of elastic articulation, close to the core 22, extending by an outer peripheral zone 24 bearing on the inner wall 25 of the vessel 18, the second stage 20 extending axially from the same central core 22, by forming a bell whose inner peripheral zone 26 near the core 22 constitutes an elastic articulation extending by an outer peripheral zone 27, resting on the bottom 21 of the vessel 18 and able to bear also on the inner wall 28 of the when the membrane 13 is stressed. On the one hand, the tank 18 being hermetically sealed, it is established that, when the device is at rest, the pressure P2 of the tank 18 is equivalent to the ambient air pressure at the time of the initial assembly of the device. 1, that is to say equivalent to the atmospheric pressure. On the other hand, the container 4 necessarily having a variable volume by its function without air intake and that the bottom valve 11 can not be perfectly sealed, it is established that the pressure P3 of the metering chamber 12 follows the evolution of the pressure of the IP environment. Therefore, when the push button 7 rises or when the device 1 is placed in a low-pressure environment PI (PI less than atmospheric pressure), for example during an air travel, the pressure P3 of the chamber of dosage decreases and becomes lower than the initial atmospheric pressure, and therefore P2 that remains invariable and therefore equivalent to the atmospheric pressure because kept tightly in the tank 18.
PI < P3 < P2 = P atmosphérique. PI <P3 <P2 = atmospheric P.
La différence de pression entre P3 et P2 génère un effort sur la membrane 15, renforçant ainsi l'appui sur l'obturateur 16, et donc 1 ' étanchéité . Selon le présent exemple de réalisation, les zones périphériques externes 24,27 des premier et second étages 19,20 de l'organe de rappel auxiliaire 17 prolongeant leurs zones périphériques internes 23,26 sont continues. The pressure difference between P3 and P2 generates a force on the membrane 15, thus reinforcing the support on the shutter 16, and therefore 1 sealing. According to the present embodiment, the outer peripheral zones 24,27 of the first and second stages 19,20 of the auxiliary return member 17 extending their inner peripheral zones 23,26 are continuous.
Mais elles pourraient également former des bras d' articulation. L'organe de rappel auxiliaire 17 constitué des premier et second étages 19,20 est réalisé de manière monobloc par moulage d'une matière thermoplastique élastomère (TPE) ou thermoplastique vulcanisée (TPV) ou à base de silicone ou tout autre matériau offrant des caractéristiques similaires. But they could also form articulating arms. The auxiliary return member 17 consisting of the first and second stages 19,20 is made integrally by molding a thermoplastic elastomer (TPE) or thermoplastic vulcanized (TPV) or silicone-based material or any other material with characteristics Similar.
De même, la membrane élastiquement déformable 15 et son obturateur 16 formant une partie du clapet hautSimilarly, the elastically deformable membrane 15 and its shutter 16 forming part of the top valve
14 sont réalisés de manière monobloc par moulage d'une matière thermoplastique élastomère (TPE) ou thermoplastique vulcanisée (TPV) ou à base de silicone ou tout autre matériau offrant des caractéristiques similaires . Selon une autre caractéristique de l'invention, l'obturateur 16 de la membrane élastiquement déformable14 are made in one piece by molding a thermoplastic elastomer (TPE) or thermoplastic vulcanized (TPV) or silicone or any other material with similar characteristics. According to another characteristic of the invention, the shutter 16 of the elastically deformable membrane
15 formant une partie du clapet haut 14 est renforcé par un noyau rigide interne 29 débouchant de ladite membrane 15 et en liaison mécanique avec le premier étage 19 de l'organe de rappel auxiliaire 17. Préférentiellement , la membrane élastiquement déformable 15 et son obturateur 16 formant une partie du clapet haut 14 et le noyau rigide interne 29 sont obtenus par injection bi-matière. 15 forming a portion of the top valve 14 is reinforced by an inner rigid core 29 opening from said membrane 15 and in mechanical connection with the first stage 19 of the auxiliary return member 17. Preferably, the elastically deformable membrane 15 and its shutter 16 forming part of the top valve 14 and the inner rigid core 29 are obtained by bi-material injection.
Selon la présente construction, la membrane élastiquement déformable 15 formant une partie du clapet haut 14 est maintenue en serrage contre la cuve 18, entre un épaulement 30 du bouton poussoir 7 et une zone périphérique 31 de ladite cuve 18. According to the present construction, the elastically deformable membrane 15 forming a portion of the top valve 14 is held in clamping against the tank 18, between a shoulder 30 of the push button 7 and a peripheral zone 31 of said tank 18.
La matière composant le bouton poussoir 7, la membrane élastiquement déformable 15, le soufflet élastiquement déformable 9, le clapet bas 11 et l'élément de base 6 comporte des agents antibactériens. The material constituting the push button 7, the elastically deformable membrane 15, the elastically deformable bellows 9, the bottom valve 11 and the base element 6 comprise antibacterial agents.

Claims

REVENDICATIONS
1. Dispositif de distribution (1) d'un produit liquide à pâteux (2) par une pompe manuelle de dosage (5) fonctionnant à basse pression et munie d'un système de fermeture d'extrémité (32), destiné à être mis en place à l'extrémité ouverte (3) d'un contenant rigide ou souple (4) renfermant le produit (2) à distribuer selon une quantité prédéterminée, ladite pompe (5) comprenant : 1. Device for dispensing (1) a liquid pasty product (2) by a manual metering pump (5) operating at low pressure and provided with an end closure system (32), intended to be placed in place at the open end (3) of a rigid or flexible container (4) containing the product (2) to be dispensed in a predetermined quantity, said pump (5) comprising:
- un élément de base (6) rapporté sur le contenant (4),  a base element (6) attached to the container (4),
- un soufflet (9) élastiquement déformable définissant une chambre de dosage (10) disposé en liaison avec  an elastically deformable bellows (9) defining a metering chamber (10) arranged in connection with
- un bouton poussoir (7) monté télescopiquement sur l'élément de base (6), comprenant  a push button (7) telescopically mounted on the base element (6), comprising
- un système de fermeture d'extrémité (32), assurant le fonctionnement de ladite pompe et constitué par :  - an end closure system (32), ensuring the operation of said pump and consisting of:
- un clapet bas anti-retour (11) en liaison avec l'élément de base (6), permettant le passage du produit (2) vers  - a low check valve (11) in connection with the base member (6), allowing the passage of the product (2) to
- une chambre de dosage (10), composée par le soufflet (9) élastiquement déformable et à volume variable, communiquant avec  a metering chamber (10), composed of elastically deformable bellows (9) with variable volume, communicating with
- un clapet haut anti-retour (14) constitué consécutivement par : un obturateur (16) du conduit (13) du bec (8) assurant la fermeture d'extrémité (32) ; une membrane (15) élastiquement déformable susceptible d'être sollicitée en déformation par le produit (2) lors de 1 ' actionnement de la pompe (5) permettant d'ouvrir l'obturateur 16 ; un organe de rappel auxiliaire (17) adapté aux basses pressions sollicitant la fermeture de l'obturateur (16) et une cuve hermétique (18), - A high non-return valve (14) consecutively constituted by: a shutter (16) of the duct (13) of the spout (8) ensuring the end closure (32); an elastically deformable membrane (15) capable of being subjected to deformation by the product (2) upon actuation of the pump (5) for opening the shutter 16; an auxiliary return member (17) adapted to the low pressures requesting closure of the shutter (16) and an airtight tank (18),
caractérisé en ce que la membrane élastiquement déformable (15) est associée à une cuve (18) qu'elle ferme hermétiquement, et à l'intérieur de laquelle est disposé axialement l'organe de rappel auxiliaire (17), en liaison permanente avec la membrane (15) et comprenant deux étages (19,20) déformables élastiquement selon des caractéristiques différentes, le premier étage (19) entretenant une force de rappel permanente de valeur prédéterminée contre ladite membrane (15), et par conséquent sur l'obturateur (16) du conduit (13) du bec (8), le second étage (20) étant interposé entre le premier étage (19) et le fond (21) de la cuve (18), et entretenant une force de rappel supérieure à celle du premier étage (19), n'agissant que lorsque la membrane (15) est sollicitée, ou inversement . characterized in that the elastically deformable membrane (15) is associated with a vessel (18) which it closes tightly, and within which is disposed axially the auxiliary return member (17), in permanent connection with the membrane (15) and comprising two stages (19,20) elastically deformable according to different characteristics, the first stage (19) maintaining a permanent restoring force of predetermined value against said membrane (15), and consequently on the shutter ( 16) of the duct (13) of the spout (8), the second stage (20) being interposed between the first stage (19) and the bottom (21) of the tank (18), and maintaining a restoring force greater than that the first stage (19), acting only when the membrane (15) is stressed, or vice versa.
2. Dispositif selon la revendication 1, caractérisée en ce que les premier et second étages2. Device according to claim 1, characterized in that the first and second stages
(19,20) sont de caractéristiques différentes et de géométries différentes. (19,20) are of different characteristics and different geometries.
3. Dispositif selon la revendication 1, caractérisé en ce que les premier et second étages3. Device according to claim 1, characterized in that the first and second stages
(19,20) sont de caractéristiques différentes, mais de géométries identiques. (19,20) have different characteristics, but identical geometries.
4. Dispositif selon les revendications 2 et 3, caractérisé en ce que les premier et second étages (19,20) formant l'organe de rappel auxiliaire (17) sont issus d'un noyau central (22), le premier étage (19) s' étendant radialement autour de celui-ci en présentant d'abord une zone périphérique interne (23) d'articulation élastique, proche du noyau (22), se prolongeant par une zone périphérique (24) externe venant en appui sur la paroi interne (25) de la cuve (18), le second étage (20) s'étendant axialement à partir du même noyau central (22), en formant une cloche dont la zone périphérique interne (26) proche du noyau (22) constitue une articulation élastique se prolongeant par une zone périphérique externe (27), en appui sur le fond (21) de la cuve (18) et susceptible de prendre appui également sur la paroi interne (28) de celle-ci lorsque la membrane (15) est sollicitée. 4. Device according to claims 2 and 3, characterized in that the first and second stages (19,20) forming the auxiliary return member (17) are derived from a central core (22), the first stage (19) ) extending radially around the latter by first having an inner peripheral zone (23) of elastic articulation, close to the core (22), extending by an outer peripheral zone (24) bearing on the wall internal portion (25) of the tank (18), the second stage (20) extending axially from the same central core (22), forming a bell whose inner peripheral zone (26) close to the core (22) constitutes an elastic articulation extending by an outer peripheral zone (27), resting on the bottom (21) of the vessel (18) and able to bear also on the inner wall (28) thereof when the membrane (15) ) is requested.
5. Dispositif selon la revendication 4, caractérisé en ce que les zones périphériques externes (24,27) des premier et second étages (19,20) de l'organe de rappel auxiliaire (17) prolongeant leurs zones périphériques internes (23,26) sont continues. 5. Device according to claim 4, characterized in that the outer peripheral zones (24,27) of the first and second stages (19,20) of the auxiliary return member (17) extending their inner peripheral zones (23,26). ) are continuous.
6. Dispositif selon la revendication 4, caractérisé en ce que les zones périphériques externes (24,27) des premier et second étages (19,20) de l'organe de rappel auxiliaire (17) prolongeant leurs zones périphériques internes (23,26) forment des bras d' articulation. 6. Device according to claim 4, characterized in that the outer peripheral zones (24,27) of the first and second stages (19,20) of the auxiliary return member (17) extending their inner peripheral zones (23,26). ) form articulating arms.
7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'organe de rappel auxiliaire (17) constitué des premier et second étages (19,20) est réalisé de manière monobloc par moulage d'une matière thermoplastique élastomère (TPE) ou thermoplastique vulcanisée (TPV) . 7. Device according to one of claims 1 to 6, characterized in that the auxiliary return member (17) consisting of the first and second stages (19,20) is integrally formed by molding a thermoplastic elastomer material (TPE) or vulcanized thermoplastic (TPV).
8. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que la membrane élastiquement déformable (15) et son obturateur (16) formant une partie du clapet haut (14) sont réalisés de manière monobloc par moulage d'une matière thermoplastique élastomère (TPE) ou thermoplastique vulcanisée (TPV) . 8. Device according to one of claims 1 to 6, characterized in that the elastically deformable membrane (15) and its shutter (16) forming a portion of the top valve (14) are made integrally by molding a material thermoplastic elastomer (TPE) or vulcanized thermoplastic (TPV).
9. Dispositif selon l'une des revendications 1 à9. Device according to one of claims 1 to
8, caractérisé en ce que l'obturateur (16) de la membrane élastiquement déformable (15) formant une partie du clapet haut (14) est renforcé par un noyau rigide interne (29) débouchant de ladite membrane (15) et en liaison mécanique avec le premier étage (19) de l'organe de rappel auxiliaire (17) . 8, characterized in that the shutter (16) of the elastically deformable membrane (15) forming a portion of the top valve (14) is reinforced by an inner rigid core (29) opening from said membrane (15) and in mechanical connection with the first stage (19) of the auxiliary return member (17).
10. Dispositif selon la revendication 9, caractérisé en ce que la membrane élastiquement déformable (15) et son obturateur (16) formant une partie du clapet haut (14) et le noyau rigide interne (29) sont obtenus par injection bi-matière. 10. Device according to claim 9, characterized in that the elastically deformable membrane (15) and its shutter (16) forming a portion of the top valve (14) and the inner rigid core (29) are obtained by bi-material injection.
11. Dispositif selon l'une des revendications 1 à 10, caractérisé en ce que la membrane élastiquement déformable (15) formant une partie du clapet haut (14) est maintenue en serrage contre la cuve (18), entre un épaulement (30) du bouton poussoir (7) et une zone périphérique (31) de ladite cuve (18). 11. Device according to one of claims 1 to 10, characterized in that the elastically deformable membrane (15) forming a portion of the top valve (14) is held in clamping against the tank (18), between a shoulder (30) of the push button (7) and a peripheral zone (31) of said tank (18).
12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que la matière composant le bouton poussoir (7), la membrane élastiquement déformable 15, le soufflet élastiquement déformable 9, le clapet bas 11 et l'élément de base 6 comporte des agents antibactériens. 12. Device according to one of claims 1 to 11, characterized in that the component material of the push button (7), the elastically deformable membrane 15, the elastically deformable bellows 9, the bottom valve 11 and the base member 6 has antibacterial agents.
EP12731063.9A 2011-06-27 2012-05-25 System for closing a device for the low-pressure dispensing of a pasty liquid material Active EP2723504B1 (en)

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FR1155686A FR2976981B1 (en) 2011-06-27 2011-06-27 SYSTEM FOR CLOSING A LOW PRESSURE DISTRIBUTION DEVICE OF A PASTY LIQUID PRODUCT
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JP2014525877A (en) 2014-10-02
US9079206B2 (en) 2015-07-14
CN103608123A (en) 2014-02-26
KR20140045943A (en) 2014-04-17
MX2013015038A (en) 2014-03-27
PL2723504T3 (en) 2015-11-30
KR101702556B1 (en) 2017-02-03
JP6028024B2 (en) 2016-11-16
AU2012277671B2 (en) 2015-12-10
ES2544841T3 (en) 2015-09-04
FR2976981B1 (en) 2013-07-05
CA2838167A1 (en) 2013-01-03
HK1190664A1 (en) 2014-07-11
BR112013031771B1 (en) 2020-12-08
CN103608123B (en) 2016-06-01
US20140346195A1 (en) 2014-11-27
RU2013156359A (en) 2015-08-10
CA2838167C (en) 2018-10-23
AU2012277671A1 (en) 2014-01-16
WO2013001193A1 (en) 2013-01-03
RU2580133C2 (en) 2016-04-10
PT2723504E (en) 2015-10-19
FR2976981A1 (en) 2012-12-28
BR112013031771A2 (en) 2016-12-06
EP2723504B1 (en) 2015-06-24

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