EP2136931A1 - Device for dispensing a liquid to pasty product with a dosing pump - Google Patents

Device for dispensing a liquid to pasty product with a dosing pump

Info

Publication number
EP2136931A1
EP2136931A1 EP08775718A EP08775718A EP2136931A1 EP 2136931 A1 EP2136931 A1 EP 2136931A1 EP 08775718 A EP08775718 A EP 08775718A EP 08775718 A EP08775718 A EP 08775718A EP 2136931 A1 EP2136931 A1 EP 2136931A1
Authority
EP
European Patent Office
Prior art keywords
bellows
push button
base member
base
axial
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
EP08775718A
Other languages
German (de)
French (fr)
Other versions
EP2136931B1 (en
Inventor
Philippe Lautre
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
Plastohm 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 Plastohm SA filed Critical Plastohm SA
Publication of EP2136931A1 publication Critical patent/EP2136931A1/en
Application granted granted Critical
Publication of EP2136931B1 publication Critical patent/EP2136931B1/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
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B05B11/0029—Valves not actuated by pressure
    • 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
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • 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

Definitions

  • the present invention relates to a device for dispensing a liquid to pasty product intended to be put in place at the open end of a rigid container, and constituted by a metering system for dispensing a predetermined quantity of product to be delivered. .
  • the first pumps were designed for perfumes initially, and then drifted to medical pumps. These pumps have always emphasized the precision of the dose, the protection of the product and the repeatability.
  • patent EP 0 312 722 has presented a bellows pump solution which makes it possible to obtain an interesting result vis-à-vis the customers' expectations, both from the point of view of cost, thanks to a number of limited parts, only from the point of view of metering accuracy and repeatability.
  • a pump comprising: a base element intended to be placed on the container by its lower end, a push button provided with a dispensing nozzle mounted telescopically to the upper part of the base element and capable of acting in pumping with respect to the latter, against a return member constituted by an elastically deformable bellows providing the sealed connection between on the one hand an internal chamber of the base element, open towards the container to allow the passage of the product through an opening, and secondly, at its upper end, an internal chamber of the push button into which opens a hole of the dispensing spout.
  • the product can be dispensed unexpectedly, because the different valves and opening / closing valves located in the circuit operating in the same direction do not prevent the product exit.
  • the object of the present invention is to remedy this drawback and concerns for this purpose a device for dispensing a liquid to pasty product intended to be put in place at the open end of a rigid container and constituted by a manual pump of assay for dispensing a predetermined amount of product to be dispensed, comprising: a base member for placement on the container at its lower end, by hooking or adhesion means such as clipping or screwing a push button provided with a dispensing spout telescopically mounted on the upper part of the base element and capable of acting in pumping with respect to the latter, against a return member constituted by an elastically deformable bellows providing the sealed connection between an internal chamber of the base element, open towards the container to allow the passage of the product through an opening, and on the other hand, at its upper end.
  • an internal chamber of the push button into which a hole of the dispensing nozzle opens associated with opening-closing means, made at the upper end of said bellows, characterized in that these means consist of: a first peripheral collar internal made at the upper end of the bellows, housed in an annular groove of the internal pushbutton forming chamber, and resting on one of its inner walls that elastically clamps according to a predetermined force, so as to ensure sealing or to be lifted radially under a certain pressure of the product during the compression of the bellows and the product that it contains and allow a insi its transfer in the annular groove, said first flange being associated with a second flange of the bellows, concentric with the first, housed in the same groove of the push button, but bearing on the outer wall thereof in which opens the l dispensing nozzle orifice, said second flange being of a height such as not to close said orifice, the opening or closing of the latter being effected by means of a locking tab con
  • the invention also relates to the features which will become apparent in the course of the description which follows, and which should be considered in isolation or in all their possible technical combinations.
  • Figure 1 shows a longitudinal sectional view of a dispensing pump according to the invention, disposed on a container of a product to be dispensed, the push button being in the open position.
  • FIG. 2 represents a longitudinal sectional view of a dispensing pump according to the invention, the dispensing nozzle being in the closed position.
  • FIG. 3 is an exploded perspective view of three quarters above the component parts of the system according to FIG. 2.
  • Figure 4 is a perspective sectional view, three quarter sectional side view of the push button and the base member in the locked position, the bellows being removed for better understanding.
  • Figure 5 is a perspective sectional view, three quarter sectional side view of the push button and the base member in the unlocked position, the bellows being removed for better understanding.
  • Figure 6 is a perspective side view, with a cut of the push button of the dispensing system in the unlocked position, the bellows having been replaced.
  • Figure 7 is a perspective side view, with a cut of the push button of the dispensing system in the locked position, the bellows having been replaced.
  • FIG. 8 shows a longitudinal sectional view of a dispensing pump according to another version comprising a return air, arranged by screwing on a container of a product to be dispensed, the push button being in the open position.
  • Figure 9 shows a longitudinal sectional view of a dispensing pump according to another version comprising a return air, arranged by screwing on a container of a product to be dispensed, the push button being in the closed position.
  • Figure 10 is an enlarged longitudinal sectional view (from the bottom) of a base member on its end of the container, showing the air intake system.
  • Figure 11 is an enlarged perspective view of the base member viewed from below, showing the air intake grooves, prior to mounting a seal.
  • Figures 12 and 13 are enlarged views of the upper flange portion, convex position before pumping and concave position when establishing a deletion in the bellows portion before opening the flange and passage of the product.
  • Figure 14 is a plan view of the base member according to an alternative embodiment.
  • Figure 15 is a perspective view according to Figure 14.
  • the device 1 generally designated in the figures is intended for dispensing a liquid pasty product 2, placed at the open end 3 of a rigid container 4, and is constituted by a manual dosing pump 5, allowing the delivery of a predetermined quantity of product 2 to be dispensed.
  • the device 1 comprises: a base element 6 intended to be put in place by means of hooking or adhesion such as clipping or screwing on the container 4 by its lower end 7, a push button 8 provided with a dispensing spout 9 mounted telescopically to the upper part 10 of the base element 6 and capable of acting pumping with respect to the latter, against a return member constituted by - an elastically deformable bellows 11 ensuring the tight connection between on the one hand an inner chamber 12 of the base member 6, open towards the container 4 to allow the passage of the product 2 through an opening 13, and secondly, at its upper end, an internal chamber 14 of the push button 8 in which opens a hole 15 of the dispensing spout 9, associated with opening-closing means, made at the upper end of said bellows 11.
  • these means consist of: a first internal peripheral flange 16 made at the upper end of the bellows
  • the bellows 11 comprises a base 21 sealingly adapted to the bottom of the inner chamber 12 of the base member 6, and comprises at least one fixed angular indexing means, relative to said base member 6. , and consequently with respect to its locking tab 20 and the push button 8 which itself is movable.
  • the indexing means of the bellows consist of at least one radial tooth 22, made on the bottom of the inner chamber 12 of the base member 6, intended to cooperate with a corresponding notch 23 of the base 21 of the bellows 11.
  • the base 21 of the bellows 11 has three radial indexing and anti-rotation notches 23 forming between them angles at the center of 120 °, 125 ° and 115 °, fitting on teeth. corresponding 22 of the internal chamber 12.
  • indexing is to position a hook 42 in the tube 38 of the base 6, so as to assemble the bellows 11 by indexing the position of the blade 20 of the bellows 11 relative to the stall position. 42 of the base 6.
  • the notches 22 and 23, however, would be retained to provide anti-rotation of the bellows 11 relative to the base 6, but could then be identical angles.
  • the push button 8 comprises means of indexing with respect to the base element 6, and consequently of the bellows 11 and its locking tab 20 of the spout 9, which are fixed relative to each other. to the basic element 6.
  • indexing means are constituted by at least one axial rib 24 formed on the inner wall of the push button 8 intended to cooperate with a corresponding groove 25 of an inner skirt 26 of the base member 6 delimiting its internal chamber 12 on the one hand, and a peripheral housing 27 with the outer wall 28 of said base element 6 on the other hand, which housing 27 is intended to receive the wall of the push button 8 and allow both its axial sliding and its rotation to inside of it.
  • the skirt 26 of the base member 6 comprises three grooves 25 intended to cooperate with three corresponding axial ribs 24 of the push button 8, to constitute their indexing means, at angles of 120 ° each .
  • the height of the grooves 25 of the skirt 26 is lower, on the one hand, at the height thereof, because of the sectoral recesses 29 which are made on the same side of each groove 25. and, on the other hand, less than the height of the ribs 24 of the push button 8, so as to allow it to slide axially in a certain stroke, in an open position, and thus to pump the product, or to block it in its closed position.
  • high position after rotation in the direction of the recesses 29, putting the lower end of the ribs 24 of said push button 8 in abutment against the recesses 29 of the skirt 26.
  • the angle at the center of the sectoral recesses 29 is a function of the desired rotary stroke.
  • the upper peripheral end of the inner skirt 26 of the base element 6 and the lower peripheral end of the wall of the push button 8 comprise latching means 30, 31 disposed respectively outside the skirt 26 and inside the push button 8, so as to allow an axial stroke thereof and its rotation in the high position, while ensuring its axial retention on the base member 6 .
  • the attachment portion located on the push button does not interfere with the production and demolding of the workpiece downwards.
  • this allows to hide the snap portion and to be able to change the rigidity of the clipping by working on the shapes of discontinuous clipping parts.
  • the rigidity of the clipping portions 26 can be modulated by positioning a wall 41 connecting the different parts 26 and varying the height of said wall 41.
  • This swelling limits the volume located between the flange and the dispensing channel of the flange 16 and the orifice 15 of the dispensing spout 9.
  • the product is then distributed normally.
  • the bellows 11 is returned to the initial position by its elastic memory effect.
  • the depression caused in the bellows 11 due to its return to its initial position brings the flange 16 from a concave position to a convex position.
  • This camber variation causes a variation of the volume present in the space between the flange 16 and the orifice 15 of distribution, and thereby a re-aspiration of the product located in this orifice, avoiding the creation of a residue at this level , giving an impression of soiling.
  • the device comprises air intake means constituted by at least one vent constituted by: at least one axial groove 32 made on a portion of the thread 33 of the base element 6, to cooperate with a thread 34 of the container 4, at least one radial groove 35 in communication with the axial groove 32 is formed under the wall 36 of the chamber 12 of the base member 6, axial passages 37 made according to generatrices of an axial chimney 38 of the base element 6 immersed in the container 4, said chimney 38 comprising, in its upper part, adjacent to the wall of the chamber 12, three bosses 39 arranged peripherally, defining between them said passages 37, a deformable seal 40 interposed between the base of the neck 3 of the container 4 and the underside 36 of the chamber 12 of the base member 6, having the radial groove 35, leq a seal 40 to an inner diameter substantially equal to that in which the bosses 39 are inscribed, leaving the passages 37 free and an outside diameter such as not to obscure the axial groove 32 of the thread 33 of the base element 6.
  • the detrimental effect of using a soft lip is its lack of efficiency to prevent liquid products from leaking through this place.
  • the fragility of this type of lip can be damaged by a blow during transportation or assembly for example compromises a good seal.
  • the pressure can force the product to pass. through the air intake hole and to infiltrate the periphery of the aforementioned sealing lip.
  • the various parts of the system are made of plastics.
  • the bellows is made of a plastic material, preferably elastically deformable.
  • the constituent material of the bellows has the elasticity of the rubber and is at the same time able to provide, between the two housing elements, the restoring forces necessary for pumping.
  • the choice was directed to a plastic material sufficiently flexible to ensure a good seal at the collars, sufficiently nervous to ensure a return to the initial position and ensure a vacuum, and sufficiently resistant to creep to allow to retain the initial tightening and maintain a repeatability of compression stroke and therefore dose.
  • the bellows is made of injectable polyurethane.
  • Ether-Ester, DRYFLEX Styrene Thermoplastic Styrene-Ethylene-Butadiene-Styrene materials that did not exist about twenty years ago, as well as to some references of polyethylenes made or modified to guarantee a nervousness and an acceptable holding at creep.
  • the names are the trade names, in parentheses the chemical names. These materials have all the characteristics listed above.
  • a spring (not shown) metal or not, is arranged around the bellows 11.
  • a complementary spring can s' prove useful to help this return to the initial position, while maintaining sufficient elasticity at the collars.

Abstract

A device for dispensing a liquid to a pasty product is placed at the open end of a rigid container and includes a manual dosing pump for dosing a predetermined amount of product to be dispensed. The device has a base member to be placed on the container, a push button with a dispensing spout capable of a pumping action against a bellow including an opening-closing system formed at the upper end of the bellow. The opening-closing system includes a first inner peripheral collar formed at the upper end of the bellow and associated with a second collar of the bellow that is concentrically arranged relative to the first one and inserted in the same groove of the push button, wherein a locking tab capable of blocking the opening protrudes from the collar.

Description

DISPOSITIF DE DISTRIBUTION D'UN PRODUIT LIQUIDE A PATEUX PAR POMPE DE DOSAGE DEVICE FOR DISPENSING A PASTY LIQUID PRODUCT BY DOSING PUMP
La présente invention concerne un dispositif de distribution d'un produit liquide à pâteux destiné à être mis en place à l'extrémité ouverte d'un contenant rigide, et constitué par un système doseur permettant la distribution d'une quantité prédéterminée de produit à délivrer.The present invention relates to a device for dispensing a liquid to pasty product intended to be put in place at the open end of a rigid container, and constituted by a metering system for dispensing a predetermined quantity of product to be delivered. .
Les premières pompes furent conçues pour des parfums initialement, et ont dérivé ensuite vers les pompes médicales. Ces pompes ont toujours mis en avant la précision de la dose, la protection du produit et la répétabilité .The first pumps were designed for perfumes initially, and then drifted to medical pumps. These pumps have always emphasized the precision of the dose, the protection of the product and the repeatability.
En conséquence de quoi, l'efficacité des pompes ayant primé sur le prix, le nombre de pièces d'une pompe standard oscille entre dix et quinze selon les modèles .As a result of which, the efficiency of the pumps having prevailed on the price, the number of parts of a standard pump oscillates between ten and fifteen according to the models.
L'utilisation de telles pompes a ensuite été adoptée pour la distribution de tous produits liquides à pâteux, que ce soit par exemple alimentaires, de produits cosmétiques, de produits d'hygiène, santé, beauté ou de produits solaires.The use of such pumps was then adopted for the distribution of any liquid to pasty products, whether for example food, cosmetics, hygiene products, health, beauty or solar products.
L'objectif était alors de simplifier la vie des utilisateurs en permettant d'obtenir une dose par un mouvement simple. Mais à partir du moment où les pompes se sont positionnées sur des marchés à plus faible valeur ajoutée, tel que l'alimentaire ou la cosmétique, l'hygiène, santé et beauté, le prix des pompes a constitué un frein.The goal was then to simplify the life of the users by allowing to obtain a dose by a simple movement. But from the moment that the pumps were positioned in markets with lower added value, such as food or cosmetics, hygiene, health and beauty, the price of pumps has been a drag.
La plupart de ces nouveaux produits utilisant ces pompes sont des produits jetables, avec une durée d'utilisation réduite. De plus, leurs exigences en termes de précision de dose et de répétabilité sont plus réduites.Most of these new products using these pumps are disposable products with reduced service life. In addition, their requirements in terms of dose accuracy and repeatability are reduced.
Il existe actuellement sur le marché un certain nombre de produits comportant des pompes, mais beaucoup de ces pompes représentent une réponse exagérée à l'attente du consommateur, du point de vue capacités techniques et coûts.There are currently a number of pumped products on the market, but many of these pumps represent an exaggerated response to consumer expectations from the point of view of technical capabilities and costs.
Cette problématique de coût apparaît depuis peu avec la démocratisation des produits, initialement haut de gamme, à adapter à la grande distribution.This problem of cost appears recently with the democratization of products, initially high-end, to adapt to large-scale distribution.
C'est ainsi qu'a déjà été recherchée la réalisation d'un système de distribution par pompe présentant peu de pièces, en tout cas le moins possible, de manière à le rendre économique, et que de nombreux brevets ont été déposés dans ce domaine, décrivant des pompes comportant par exemple cinq pièces : une pièce par valve + base + bouton poussoir + chambre déformable. Mais si la première vague de pompes simplifiées avait une volonté de réduire les coûts de production, la deuxième a recherché à augmenter la qualité.Thus, it has already been sought the realization of a pump dispensing system with few parts, at least as little as possible, so as to make it economical, and that many patents have been filed in this field. , describing pumps comprising for example five parts: one piece per valve + base + push button + deformable chamber. But if the first wave of simplified pumps had a desire to reduce production costs, the second sought to increase quality.
C'est ainsi que le brevet EP 0 312 722 a présenté une solution de pompe à soufflet qui permet d' obtenir un résultat intéressant vis-à-vis des attentes des clients, tant du point de vue du coût, grâce à un nombre de pièces limité, que du point de vue de la précision de dosage et de la répétabilité . Cette solution a consisté à concevoir une pompe comprenant : un élément de base destiné à être mis en place sur le contenant par son extrémité inférieure, un bouton poussoir muni d'un bec de distribution monté télescopiquement à la partie supérieure de l'élément de base et susceptible d'agir en pompage par rapport à ce dernier, à l' encontre d'un organe de rappel constitué par un soufflet élastiquement déformable assurant la liaison étanche entre d'une part une chambre interne de l'élément de base, ouverte vers le contenant pour permettre le passage du produit au travers d'une ouverture, et d'autre part, à son extrémité supérieure, une chambre interne du bouton poussoir dans laquelle débouche un trou du bec de distribution.Thus, patent EP 0 312 722 has presented a bellows pump solution which makes it possible to obtain an interesting result vis-à-vis the customers' expectations, both from the point of view of cost, thanks to a number of limited parts, only from the point of view of metering accuracy and repeatability. This solution consisted in designing a pump comprising: a base element intended to be placed on the container by its lower end, a push button provided with a dispensing nozzle mounted telescopically to the upper part of the base element and capable of acting in pumping with respect to the latter, against a return member constituted by an elastically deformable bellows providing the sealed connection between on the one hand an internal chamber of the base element, open towards the container to allow the passage of the product through an opening, and secondly, at its upper end, an internal chamber of the push button into which opens a hole of the dispensing spout.
Cependant, ce système distributeur précité présente un inconvénient majeur.However, this aforementioned dispensing system has a major disadvantage.
En effet, lors d'un appui accidentel sur le contenant sur lequel ce distributeur est positionné, du produit peut être distribué inopinément, du fait que les différentes valves et soupapes d'ouverture- fermeture situées dans le circuit fonctionnant dans le même sens ne permettent pas d'empêcher la sortie du produit.Indeed, during an accidental support on the container on which this distributor is positioned, the product can be dispensed unexpectedly, because the different valves and opening / closing valves located in the circuit operating in the same direction do not prevent the product exit.
Il peut advenir également que le contenant fermé par le distributeur soit soumis à une dépression comme dans le cas d'un voyage en avion ou en cas de changement de température. Dans ces cas là, les différentes valves et soupapes d'ouverture-fermeture situés dans le circuit fonctionnant dans le même sens ne permettent pas d'empêcher la sortie du produit, occasionnant par la même une pollution de l'environnement.It may also happen that the container closed by the distributor is subjected to a depression as in the case of a trip by plane or in case of change of temperature. In these cases, the various valves and opening-closing valves located in the circuit operating in the same direction do not prevent the exit of the product, thereby causing environmental pollution.
La présente invention a pour but de remédier à cet inconvénient et concerne à cet effet un dispositif de distribution d'un produit liquide à pâteux destiné à être mis en place à l'extrémité ouverte d'un contenant rigide et constitué par une pompe manuelle de dosage permettant la délivrance d'une quantité prédéterminée de produit à distribuer, comprenant : un élément de base destiné à être mis en place sur le contenant par son extrémité inférieure, par un moyen d'accroché ou d'adhésion tel que clipsage ou vissage un bouton poussoir muni d'un bec de distribution monté télescopiquement à la partie supérieure de l'élément de base et susceptible d'agir en pompage par rapport à ce dernier, à l' encontre d'un organe de rappel constitué par un soufflet élastiquement déformable assurant la liaison étanche entre d'une part une chambre interne de l'élément de base, ouverte vers le contenant pour permettre le passage du produit au travers d'une ouverture, et d'autre part, à son extrémité supérieure, une chambre interne du bouton poussoir dans laquelle débouche un trou du bec de distribution, associé à des moyens d'ouverture-fermeture, réalisés à l'extrémité supérieure dudit soufflet, caractérisé en ce que ces moyens sont constitués par : une première collerette périphérique interne réalisée à l'extrémité supérieure du soufflet, se logeant dans une gorge annulaire interne du bouton poussoir formant chambre, et en appui sur une de ses parois interne qu'elle enserre élastiquement selon une force prédéterminée, de façon à assurer l'étanchéité ou à être soulevée radialement sous une certaine pression du produit lors de la compression du soufflet et du produit qu' il contient et permettre ainsi son transfert dans la gorge annulaire, ladite première collerette étant associée à une seconde collerette du soufflet, concentrique à la première, se logeant dans la même gorge du bouton poussoir, mais en appui sur la paroi externe de celle-ci dans laquelle débouche l'orifice du bec de distribution, ladite seconde collerette étant d'une hauteur telle à ne pas obturer ledit orifice, l'ouverture ou la fermeture de ce dernier s' effectuant par l'intermédiaire d'une languette de verrouillage concave, issue de la collerette, de hauteur et de largeur au moins telles à obturer l'orifice par plaquage, ou à le libérer au cours d'une action en rotation, dans un sens ou dans l'autre, sur ledit bouton poussoir, par rapport à l'élément de base, et conséquemment au soufflet, et à sa languette, demeurant fixes.The object of the present invention is to remedy this drawback and concerns for this purpose a device for dispensing a liquid to pasty product intended to be put in place at the open end of a rigid container and constituted by a manual pump of assay for dispensing a predetermined amount of product to be dispensed, comprising: a base member for placement on the container at its lower end, by hooking or adhesion means such as clipping or screwing a push button provided with a dispensing spout telescopically mounted on the upper part of the base element and capable of acting in pumping with respect to the latter, against a return member constituted by an elastically deformable bellows providing the sealed connection between an internal chamber of the base element, open towards the container to allow the passage of the product through an opening, and on the other hand, at its upper end. , an internal chamber of the push button into which a hole of the dispensing nozzle opens, associated with opening-closing means, made at the upper end of said bellows, characterized in that these means consist of: a first peripheral collar internal made at the upper end of the bellows, housed in an annular groove of the internal pushbutton forming chamber, and resting on one of its inner walls that elastically clamps according to a predetermined force, so as to ensure sealing or to be lifted radially under a certain pressure of the product during the compression of the bellows and the product that it contains and allow a insi its transfer in the annular groove, said first flange being associated with a second flange of the bellows, concentric with the first, housed in the same groove of the push button, but bearing on the outer wall thereof in which opens the l dispensing nozzle orifice, said second flange being of a height such as not to close said orifice, the opening or closing of the latter being effected by means of a locking tab concave, resulting from the collar, of height and width at least such to close the orifice by plating, or to release it during a rotating action, in one direction or the other, on said push button, relative to the base element, and consequently the bellows, and its tongue, remaining fixed.
De cette manière, tout appui accidentel, selon le but recherché, sur le bouton poussoir en position de fermeture interdira la sortie du produit par opposition de la languette de verrouillage, dont le plaquage contre l'orifice du bec n'en sera qu'accentué par la pression du produit. C'est la languette de verrouillage qui fera opposition à cette sortie.In this way, any accidental support, depending on the purpose, on the push button in the closed position will prohibit the release of the product as opposed to the locking tongue, the plating against the mouth of the nozzle will be accentuated by the pressure of the product. This is the locking tab that will oppose this exit.
L' 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 invention also relates to the features which will become apparent in the course of the description which follows, and 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 :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:
La figure 1 représente une vue en coupe longitudinale d'une pompe de distribution selon l'invention, disposée sur un contenant d'un produit à distribuer, le bouton poussoir étant en position d' ouverture .Figure 1 shows a longitudinal sectional view of a dispensing pump according to the invention, disposed on a container of a product to be dispensed, the push button being in the open position.
La figure 2 représente une vue en coupe longitudinale d'une pompe de distribution selon l'invention, le bec de distribution étant en position de fermeture.FIG. 2 represents a longitudinal sectional view of a dispensing pump according to the invention, the dispensing nozzle being in the closed position.
La figure 3 est une vue en perspective éclatée de trois quart dessus des pièces constitutives du système selon la figure 2.FIG. 3 is an exploded perspective view of three quarters above the component parts of the system according to FIG. 2.
La figure 4 est une vue en perspective en coupe, vue de côté trois quart de coupe du bouton poussoir et de l'élément de base en position verrouillée, le soufflet étant ôté pour une meilleure compréhension. La figure 5 est une vue en perspective en coupe, vue de côté trois quart de coupe du bouton poussoir et de l'élément de base en position déverrouillée, le soufflet étant ôté pour une meilleure compréhension.Figure 4 is a perspective sectional view, three quarter sectional side view of the push button and the base member in the locked position, the bellows being removed for better understanding. Figure 5 is a perspective sectional view, three quarter sectional side view of the push button and the base member in the unlocked position, the bellows being removed for better understanding.
La figure 6 est une vue en perspective de côté, avec une coupe du bouton poussoir du système de distribution en position déverrouillée, le soufflet ayant été remis en place.Figure 6 is a perspective side view, with a cut of the push button of the dispensing system in the unlocked position, the bellows having been replaced.
La figure 7 est une vue en perspective de côté, avec une coupe du bouton poussoir du système de distribution en position verrouillée, le soufflet ayant été remis en place.Figure 7 is a perspective side view, with a cut of the push button of the dispensing system in the locked position, the bellows having been replaced.
La figure 8 représente une vue en coupe longitudinale d'une pompe de distribution selon une autre version comprenant une reprise d'air, disposée par vissage sur un contenant d'un produit à distribuer, le bouton poussoir étant en position d'ouverture.8 shows a longitudinal sectional view of a dispensing pump according to another version comprising a return air, arranged by screwing on a container of a product to be dispensed, the push button being in the open position.
La figure 9 représente une vue en coupe longitudinale d'une pompe de distribution selon une autre version comprenant une reprise d'air, disposée par vissage sur un contenant d'un produit à distribuer, le bouton poussoir étant en position de fermeture. La figure 10 est une vue en coupe longitudinale à échelle agrandie (de la partie inférieure) d'un élément de base sur son l'extrémité du contenant, montrant le système de reprise d'air. La figure 11 est une vue en perspective à échelle agrandie de l'élément de base vu de dessous, montrant les gorges de reprise d'air, avant montage d'un joint d' étanchéité .Figure 9 shows a longitudinal sectional view of a dispensing pump according to another version comprising a return air, arranged by screwing on a container of a product to be dispensed, the push button being in the closed position. Figure 10 is an enlarged longitudinal sectional view (from the bottom) of a base member on its end of the container, showing the air intake system. Figure 11 is an enlarged perspective view of the base member viewed from below, showing the air intake grooves, prior to mounting a seal.
Les figures 12 et 13 sont des vues agrandies de la partie collerette supérieure, en position convexe avant pompage et en position concave lors de l'établissement d'une suppression dans la partie soufflet avant ouverture de la collerette et passage du produit.Figures 12 and 13 are enlarged views of the upper flange portion, convex position before pumping and concave position when establishing a deletion in the bellows portion before opening the flange and passage of the product.
La figure 14 est une vue en plan de l'élément de base selon une variante de réalisation.Figure 14 is a plan view of the base member according to an alternative embodiment.
La figure 15 est une vue en perspective selon la figure 14.Figure 15 is a perspective view according to Figure 14.
Le dispositif 1 globalement désigné sur les figures est destiné à la distribution d'un produit liquide à pâteux 2, mis en place à l'extrémité ouverte 3 d'un contenant rigide 4, et est constitué par une pompe manuelle de dosage 5, permettant la délivrance d'une quantité prédéterminée de produit 2 à distribuer.The device 1 generally designated in the figures is intended for dispensing a liquid pasty product 2, placed at the open end 3 of a rigid container 4, and is constituted by a manual dosing pump 5, allowing the delivery of a predetermined quantity of product 2 to be dispensed.
De manière connue, le dispositif 1 comprend : un élément de base 6 destiné à être mis en place par un moyen d'accroché ou d'adhésion tel que clipsage ou vissage sur le contenant 4 par son extrémité inférieure 7, un bouton poussoir 8 muni d'un bec de distribution 9 monté télescopiquement à la partie supérieure 10 de l'élément de base 6 et susceptible d' agir en pompage par rapport à ce dernier, à l' encontre d'un organe de rappel constitué par - un soufflet 11 élastiquement déformable assurant la liaison étanche entre d'une part une chambre interne 12 de l'élément de base 6, ouverte vers le contenant 4 pour permettre le passage du produit 2 au travers d'une ouverture 13, et d'autre part, à son extrémité supérieure, une chambre interne 14 du bouton poussoir 8 dans laquelle débouche un trou 15 du bec de distribution 9, associé à des moyens d'ouverture-fermeture, réalisés à l'extrémité supérieure dudit soufflet 11.In known manner, the device 1 comprises: a base element 6 intended to be put in place by means of hooking or adhesion such as clipping or screwing on the container 4 by its lower end 7, a push button 8 provided with a dispensing spout 9 mounted telescopically to the upper part 10 of the base element 6 and capable of acting pumping with respect to the latter, against a return member constituted by - an elastically deformable bellows 11 ensuring the tight connection between on the one hand an inner chamber 12 of the base member 6, open towards the container 4 to allow the passage of the product 2 through an opening 13, and secondly, at its upper end, an internal chamber 14 of the push button 8 in which opens a hole 15 of the dispensing spout 9, associated with opening-closing means, made at the upper end of said bellows 11.
Selon l'invention, ces moyens sont constitués par : une première collerette périphérique interne 16 réalisée à l'extrémité supérieure du souffletAccording to the invention, these means consist of: a first internal peripheral flange 16 made at the upper end of the bellows
11, se logeant dans une gorge annulaire interne 14 du bouton poussoir 8 formant chambre, et en appui sur une de ses parois interne 17 qu'elle enserre élastiquement selon une force prédéterminée, de façon à assurer l'étanchéité ou à être soulevée radialement sous une certaine pression du produit 2 lors de son pompage, et permettre ainsi son transfert dans la gorge annulaire 14, ladite première collerette 16 étant associée à une seconde collerette 18 du soufflet 11, concentrique à la première 16, se logeant dans la même gorge 14 du bouton poussoir 8, mais en appui sur la paroi externe 19 de celle-ci dans laquelle débouche l'orifice 15 du bec de distribution 9, ladite seconde collerette 18 étant d'une hauteur telle à ne pas obturer ledit orifice 15, l'ouverture ou la fermeture de ce dernier s' effectuant par l'intermédiaire d'une languette de verrouillage concave 20, issue de la collerette 18, de hauteur et de largeur au moins telles à obturer l'orifice 15 par plaquage, ou à le libérer au cours d'une action en rotation, dans un sens ou dans l'autre, sur ledit bouton poussoir 8, par rapport à l'élément de base 6, et conséquemment au soufflet 11, et à sa languette 20, demeurant fixes.11, being housed in an internal annular groove 14 of the push button 8 forming a chamber, and resting on one of its inner walls 17 which it elastically encloses according to a predetermined force, so as to ensure the seal or to be raised radially under a certain pressure of the product 2 during its pumping, and thus allow its transfer into the annular groove 14, said first collar 16 being associated with a second collar 18 of the bellows 11, concentric with the first 16, housed in the same groove 14 of the push button 8, but resting on the outer wall 19 thereof in which opens the orifice 15 of the dispensing nozzle 9, said second collar 18 being of a height such as not to close said orifice 15, the opening or closing of the latter being effected by means of a concave locking tongue 20, issuing from the flange 18, of at least height and width such as to close the orifice 15 by plating, or to release it during a rotation action, in one direction or the other, on said push button 8, with respect to the base element 6, and consequently to the bellows 11, and to its tongue 20, remaining fixed.
Afin que le positionnement de la languette de verrouillage 20 soit optimisé en position de verrouillage, il est nécessaire que les différentes pièces constitutives de la pompe soient indexées les unes par rapport aux autres.So that the positioning of the locking tab 20 is optimized in the locking position, it is necessary that the various constituent parts of the pump are indexed relative to each other.
Pour cela, le soufflet 11 comporte une base 21 s' adaptant de manière étanche au fond de la chambre interne 12 de l'élément de base 6, et comporte au moins un moyen d'indexation angulaire fixe, par rapport audit élément de base 6, et conséquemment par rapport à sa languette de verrouillage 20 et le bouton poussoir 8 qui, lui, est mobile.For this, the bellows 11 comprises a base 21 sealingly adapted to the bottom of the inner chamber 12 of the base member 6, and comprises at least one fixed angular indexing means, relative to said base member 6. , and consequently with respect to its locking tab 20 and the push button 8 which itself is movable.
Les moyens d' indexation du soufflet sont constitués par au moins une dent radiale 22, réalisée sur le fond de la chambre interne 12 de l'élément de base 6, destinée à coopérer avec une encoche correspondante 23 de la base 21 du soufflet 11.The indexing means of the bellows consist of at least one radial tooth 22, made on the bottom of the inner chamber 12 of the base member 6, intended to cooperate with a corresponding notch 23 of the base 21 of the bellows 11.
Selon le présent exemple de réalisation, la base 21 du soufflet 11 comporte trois encoches d'indexation et d' anti-rotation radiales 23 formant entre elles des angles au centre de 120°, 125° et 115°, s'emboîtant sur des dents correspondantes 22 de la chambre interne 12.According to the present embodiment, the base 21 of the bellows 11 has three radial indexing and anti-rotation notches 23 forming between them angles at the center of 120 °, 125 ° and 115 °, fitting on teeth. corresponding 22 of the internal chamber 12.
Un autre moyen de réalisation de l'indexation est de positionner un décroché 42 dans le tube 38 de la base 6, de manière à pouvoir assembler le soufflet 11 en indexant la position de la lamelle 20 du soufflet 11 par rapport à la position du décroché 42 de la base 6. Les encoches 22 et 23 seraient cependant conservées pour assurer une anti rotation du soufflet 11 par rapport à la base 6, mais pourraient alors être d'angles identiques.Another embodiment of the indexing is to position a hook 42 in the tube 38 of the base 6, so as to assemble the bellows 11 by indexing the position of the blade 20 of the bellows 11 relative to the stall position. 42 of the base 6. The notches 22 and 23, however, would be retained to provide anti-rotation of the bellows 11 relative to the base 6, but could then be identical angles.
Selon une autre caractéristique de l'invention, le bouton poussoir 8 comporte des moyens d' indexation par rapport à l'élément de base 6, et conséquemment du soufflet 11 et de sa languette de verrouillage 20 du bec 9, qui sont fixes par rapport à l'élément de base 6.According to another characteristic of the invention, the push button 8 comprises means of indexing with respect to the base element 6, and consequently of the bellows 11 and its locking tab 20 of the spout 9, which are fixed relative to each other. to the basic element 6.
Ces moyens d' indexation sont constitués par au moins une nervure axiale 24 réalisée sur la paroi interne du bouton poussoir 8 destinée à coopérer avec une rainure correspondante 25 d'une jupe interne 26 de l'élément de base 6 délimitant sa chambre interne 12 d'une part, et un logement périphérique 27 avec la paroi externe 28 dudit élément de base 6 d'autre part, lequel logement 27 est destiné à recevoir la paroi du bouton poussoir 8 et permettre à la fois son coulissement axial et sa rotation à l'intérieur de celui-ci .These indexing means are constituted by at least one axial rib 24 formed on the inner wall of the push button 8 intended to cooperate with a corresponding groove 25 of an inner skirt 26 of the base member 6 delimiting its internal chamber 12 on the one hand, and a peripheral housing 27 with the outer wall 28 of said base element 6 on the other hand, which housing 27 is intended to receive the wall of the push button 8 and allow both its axial sliding and its rotation to inside of it.
Ceci permet un déplacement du bouton poussoir 8 dans l'élément de base 6 de manière bien rectiligne, et limite ainsi l'effet de descente ou de remontée de guingois, du fait du guidage obtenu.This allows a displacement of the push button 8 in the base member 6 in a rectilinear manner, and thus limits the effect of descent or ascent of askew, because of the guidance obtained.
Selon le présent exemple de réalisation, la jupe 26 de l'élément de base 6 comporte trois rainures 25 destinées à coopérer avec trois nervures axiales correspondantes 24 du bouton poussoir 8, pour constituer leurs moyens d' indexation, selon des angles de 120° chacun.According to the present embodiment, the skirt 26 of the base member 6 comprises three grooves 25 intended to cooperate with three corresponding axial ribs 24 of the push button 8, to constitute their indexing means, at angles of 120 ° each .
Selon une autre caractéristique de l'invention, la hauteur des rainures 25 de la jupe 26 est inférieure d'une part à la hauteur de celle-ci, du fait de décrochements sectoriels 29 qui y sont réalisés, du même côté de chaque rainure 25, et d'autre part inférieure à la hauteur des nervures 24 du bouton poussoir 8, de manière à autoriser son coulissement axial selon une certaine course, dans une position d'ouverture , et donc de pompage du produit, ou son blocage en fermeture en position haute, après rotation dans le sens des décrochements 29, mettant l'extrémité basse des nervures 24 dudit bouton poussoir 8 en butée contre les décrochements 29 de la jupe 26. L'angle au centre des décrochements sectoriels 29 est fonction de la course rotative souhaitée.According to another characteristic of the invention, the height of the grooves 25 of the skirt 26 is lower, on the one hand, at the height thereof, because of the sectoral recesses 29 which are made on the same side of each groove 25. and, on the other hand, less than the height of the ribs 24 of the push button 8, so as to allow it to slide axially in a certain stroke, in an open position, and thus to pump the product, or to block it in its closed position. high position, after rotation in the direction of the recesses 29, putting the lower end of the ribs 24 of said push button 8 in abutment against the recesses 29 of the skirt 26. The angle at the center of the sectoral recesses 29 is a function of the desired rotary stroke.
Selon une autre caractéristique de l'invention, l'extrémité périphérique haute de la jupe interne 26 de l'élément de base 6 et l'extrémité périphérique basse de la paroi du bouton poussoir 8 comportent des moyens d' encliquetage 30,31 disposés respectivement à l'extérieur de la jupe 26 et à l'intérieur du bouton poussoir 8, de manière à autoriser une course axiale de celui-ci ainsi que sa rotation en position haute, tout en assurant sa retenue axiale sur l'élément de base 6.According to another characteristic of the invention, the upper peripheral end of the inner skirt 26 of the base element 6 and the lower peripheral end of the wall of the push button 8 comprise latching means 30, 31 disposed respectively outside the skirt 26 and inside the push button 8, so as to allow an axial stroke thereof and its rotation in the high position, while ensuring its axial retention on the base member 6 .
De cette manière, la partie d'accrochage située sur le bouton poussoir ne gêne en rien la réalisation et le démoulage de la pièce vers le bas. Du côté de l'élément de base, cela permet de cacher la partie d' encliquetage et de pouvoir modifier la rigidité du clipsage en travaillant sur les formes des parties clipsantes discontinues.In this way, the attachment portion located on the push button does not interfere with the production and demolding of the workpiece downwards. On the side of the base member, this allows to hide the snap portion and to be able to change the rigidity of the clipping by working on the shapes of discontinuous clipping parts.
Selon un autre mode de réalisation en figures 14 et 15, la rigidité des parties clipsantes 26 peut être modulée en positionnant un muret 41 reliant les différentes parties 26 et en faisant varier la hauteur dudit muret 41.According to another embodiment in FIGS. 14 and 15, the rigidity of the clipping portions 26 can be modulated by positioning a wall 41 connecting the different parts 26 and varying the height of said wall 41.
Selon une autre caractéristique de l'invention, la première collerette périphérique interne 16 du souffletAccording to another characteristic of the invention, the first internal peripheral flange 16 of the bellows
11, en appui sur la paroi interne 17 de la gorge 14 du bouton poussoir 8 dans laquelle il est logé, forme une géométrie convexe par rapport à celle-ci, puis concave avant que le produit 2 ne sorte entre ladite collerette 16 et la paroi interne 17 de la gorge 14 du bouton poussoir 8, avant de s'échapper par son bec 9, puis qui redevient convexe lors de la cessation de la pression positive dans le soufflet 11. (Voir figures 12 et 13) .11, resting on the inner wall 17 of the groove 14 of the push button 8 in which it is housed, forms a convex geometry with respect thereto, then concave before the product 2 comes out between said flange 16 and the inner wall 17 of the groove 14 of the push button 8, before escaping through its spout 9, then becoming convex again upon cessation of the positive pressure in the bellows 11. (See Figures 12 and 13).
En effet, une géométrie convexe de la colleretteIndeed, a convex geometry of the collar
16 permet de pouvoir assurer un gonflement périphérique de celle-ci avant qu'elle ne s'ouvre, et que du produit ne passe entre la paroi de ladite gorge et ladite collerette .16 makes it possible to ensure a peripheral swelling of the latter before it opens, and that product passes between the wall of said groove and said flange.
Ce gonflement limite le volume situé entre la collerette et le canal de distribution de la collerette 16 et l'orifice 15 du bec de distribution 9.This swelling limits the volume located between the flange and the dispensing channel of the flange 16 and the orifice 15 of the dispensing spout 9.
Le produit est ensuite distribué normalement. Lorsque la pression exercée cesse ainsi que la délivrance du produit 2, le soufflet 11 est ramené en position initiale par son effet de mémoire élastique. La dépression occasionnée dans le soufflet 11 du fait de son retour en position initiale ramène la collerette 16 d'une position concave à une position convexe.The product is then distributed normally. When the pressure exerted ceases and the delivery of the product 2, the bellows 11 is returned to the initial position by its elastic memory effect. The depression caused in the bellows 11 due to its return to its initial position brings the flange 16 from a concave position to a convex position.
Cette variation de cambrure occasionne une variation du volume présent dans l'espace compris entre la collerette 16 et l'orifice 15 de distribution, et par là même une réaspiration du produit situé dans cet orifice, évitant la création d'un résidu à ce niveau, donnant une impression de salissure. Selon une autre caractéristique de l'invention comme présenté sur une autre version, le dispositif comporte des moyens de reprise d'air constitués par au moins un évent constitué par : - au moins une gorge axiale 32 réalisées sur une partie du filetage 33 de l'élément de base 6, devant coopérer avec un filetage 34 du contenant 4, au moins une gorge radiale 35 en communication avec la gorge axiale 32 est réalisée sous la paroi 36 de la chambre 12 de l'élément de base 6, des passages axiaux 37 réalisés selon des génératrices d'une cheminée axiale 38 de l'élément de base 6 plongeant dans le contenant 4, ladite cheminée 38 comportant, dans sa partie haute, adjacente à la paroi de la chambre 12, trois bossages 39 disposés périphériquement, définissant entre eux lesdits passages 37, un joint d'étanchéité déformable 40 interposé entre la base du col 3 du contenant 4 et le dessous 36 de la chambre 12 de l'élément de base 6, comportant la gorge radiale 35, lequel joint 40 à un diamètre intérieur sensiblement égal à celui dans lequel s'inscrivent les bossages 39 en laissant libres les passages 37 et un diamètre extérieur tel à ne pas occulter la gorge axiale 32 du filetage 33 de l'élément de base 6.This camber variation causes a variation of the volume present in the space between the flange 16 and the orifice 15 of distribution, and thereby a re-aspiration of the product located in this orifice, avoiding the creation of a residue at this level , giving an impression of soiling. According to another characteristic of the invention as presented in another version, the device comprises air intake means constituted by at least one vent constituted by: at least one axial groove 32 made on a portion of the thread 33 of the base element 6, to cooperate with a thread 34 of the container 4, at least one radial groove 35 in communication with the axial groove 32 is formed under the wall 36 of the chamber 12 of the base member 6, axial passages 37 made according to generatrices of an axial chimney 38 of the base element 6 immersed in the container 4, said chimney 38 comprising, in its upper part, adjacent to the wall of the chamber 12, three bosses 39 arranged peripherally, defining between them said passages 37, a deformable seal 40 interposed between the base of the neck 3 of the container 4 and the underside 36 of the chamber 12 of the base member 6, having the radial groove 35, leq a seal 40 to an inner diameter substantially equal to that in which the bosses 39 are inscribed, leaving the passages 37 free and an outside diameter such as not to obscure the axial groove 32 of the thread 33 of the base element 6.
De cette manière, la reprise d'air s'effectue à partir de l'air ambiant extérieur en passant sans discontinuité par la gorge axiale 32, puis la gorge radiale 35, puis les passages périphériques 39, vers l'intérieur du contenant 4. A noter qu'un tel évent est suffisamment grand pour laisser passer de l'air dans un flux quasi statique, mais trop fin pour laisser passer du liquide, même soumis à une forte pression.In this way, the return of air is effected from the outside ambient air passing without discontinuity through the axial groove 32, then the radial groove 35, then the peripheral passages 39, towards the inside of the container 4. Note that such a vent is large enough to let air in an almost static flow, but too fine to let liquid, even under strong pressure.
Dans l'art antérieur, il était connu de réaliser une reprise d'air à travers un ensemble de trous situés à la périphérie et surmontés d'une collerette qui permet de laisser entrer l'air tout en empêchant de laisser sortir le produit.In the prior art, it was known to make a return air through a set of holes located at the periphery and surmounted by a collar that allows air to enter while preventing the product from leaving.
L'effet néfaste d'utiliser une lèvre souple est son manque d'efficacité pour empêcher que des produits liquides ne fuient par cet endroit.The detrimental effect of using a soft lip is its lack of efficiency to prevent liquid products from leaking through this place.
De plus, la fragilité de ce type de lèvre pouvant être détériorée par un coup lors du transport ou de l'assemblage par exemple compromet une bonne étanchéité. Enfin, dans le cas de hausse de la pression dans le contenant, due par exemple à une exposition à une source de chaleur, à partir du moment où le produit ne force pas le passage dans la pompe, la pression peut forcer le produit à passer à travers le trou de reprise d'air et à s'infiltrer à la périphérie de la lèvre d' étanchéité précitée.In addition, the fragility of this type of lip can be damaged by a blow during transportation or assembly for example compromises a good seal. Finally, in the case of increased pressure in the container, for example due to exposure to a heat source, from the moment when the product does not force the passage through the pump, the pressure can force the product to pass. through the air intake hole and to infiltrate the periphery of the aforementioned sealing lip.
Avantageusement, les différentes pièces du système sont réalisées en matières plastiques. Avantageusement, le soufflet est réalisé en une matière plastique, de préférence élastiquement déformable .Advantageously, the various parts of the system are made of plastics. Advantageously, the bellows is made of a plastic material, preferably elastically deformable.
Avantageusement, la matière constitutive du soufflet présente l'élasticité du caoutchouc et est en même temps en mesure de fournir, entre les deux éléments de boîtier, les forces de rappel nécessaires pour le pompage. C'est ainsi que le choix a été orienté vers une matière plastique suffisamment souple pour assurer une bonne étanchéité au niveau des collerettes, suffisamment nerveuse pour assurer un retour en position initiale et assurer une dépression, et suffisamment résistante au fluage pour permettre de conserver les serrages initiaux ainsi que conserver une répétabilité de course de compression et donc de dose.Advantageously, the constituent material of the bellows has the elasticity of the rubber and is at the same time able to provide, between the two housing elements, the restoring forces necessary for pumping. Thus, the choice was directed to a plastic material sufficiently flexible to ensure a good seal at the collars, sufficiently nervous to ensure a return to the initial position and ensure a vacuum, and sufficiently resistant to creep to allow to retain the initial tightening and maintain a repeatability of compression stroke and therefore dose.
Préférentiellement, le soufflet est réalisé en polyuréthane injectable.Preferably, the bellows is made of injectable polyurethane.
Egalement, pourraient être utilisés du SANTOPRENEAlso, could be used of SANTOPRENE
(Polypropylène modifié Caoutchouc Ethylène-Propylène(Modified Polypropylene Ethylene-Propylene Rubber
Diène) , ou des HYTREL (Thermoplastique ElastomèreDiene), or HYTREL (Thermoplastic Elastomer
Ether-Ester , DRYFLEX (Thermoplastique Styrénique Styrène-Ethylène-Butadiène-Styrène) matières qui n'existaient pas il y a une vingtaine d'années, ainsi que vers certaines références de polyéthylènes réalisés ou modifiés pour garantir une nervosité et une tenue acceptable au fluage.Ether-Ester, DRYFLEX (Styrene Thermoplastic Styrene-Ethylene-Butadiene-Styrene) materials that did not exist about twenty years ago, as well as to some references of polyethylenes made or modified to guarantee a nervousness and an acceptable holding at creep.
Les noms sont les noms commerciaux, entre parenthèses les noms chimiques. Ces matières présentent toutes les caractéristiques énoncées plus haut.The names are the trade names, in parentheses the chemical names. These materials have all the characteristics listed above.
Selon une autre caractéristique de l'invention, un ressort (non représenté) métallique ou non, est disposé autour du soufflet 11.According to another characteristic of the invention, a spring (not shown) metal or not, is arranged around the bellows 11.
En effet, dans le cas de la distribution de produits très visqueux où la résilience du soufflet ne suffit pas pour assurer son retour en position initiale suffisamment rapidement et n'assure pas une dépression répétable menant à des doses identiques, un ressort complémentaire peut s'avérer utile pour aider ce retour en position initiale, tout en conservant une élasticité suffisante au niveau des collerettes. Indeed, in the case of the dispensing of highly viscous products where the resilience of the bellows is not sufficient to ensure its return to the initial position sufficiently quickly and does not ensure a repeatable depression leading to identical doses, a complementary spring can s' prove useful to help this return to the initial position, while maintaining sufficient elasticity at the collars.

Claims

REVENDICATIONS
1. Dispositif (1) de distribution d'un produit liquide à pâteux (2) destiné à être mis en place à l'extrémité ouverte (3) d'un contenant rigide (4) et constitué par une pompe manuelle de dosage (5) permettant la délivrance d'une quantité prédéterminée de produit (2) à distribuer, comprenant : un élément de base (6) destiné à être mis en place sur le contenant (4) par son extrémité inférieure (7) par un moyen d'accroché ou d'adhésion tel que clipsage ou vissage, un bouton poussoir (8) muni d'un bec de distribution (9) monté télescopiquement à la partie supérieure (10) de l'élément de base (6) et susceptible d' agir en pompage par rapport à ce dernier, à l' encontre d'un organe de rappel constitué par un soufflet (11) élastiquement déformable assurant la liaison étanche entre d'une part une chambre interne (12) de l'élément de base (6), ouverte vers le contenant (4) pour permettre le passage du produit (2) au travers d'une ouverture (13), et d'autre part, à son extrémité supérieure, une chambre interne (14) du bouton poussoir (8) dans laquelle débouche un trou (15) du bec de distribution (9), associé à des moyens d'ouverture-fermeture, réalisés à l'extrémité supérieure dudit soufflet (11), caractérisé en ce que ces moyens sont constitués par : une première collerette périphérique interne1. Device (1) for dispensing a liquid pasty product (2) intended to be put in place at the open end (3) of a rigid container (4) and constituted by a manual dosing pump (5). ) for delivering a predetermined quantity of product (2) to be dispensed, comprising: a base member (6) to be placed on the container (4) at its lower end (7) by means of hung or adhesion such as clipping or screwing, a push button (8) provided with a dispensing spout (9) telescopically mounted to the upper part (10) of the base member (6) and capable of acting in pumping with respect to the latter, against a return member constituted by an elastically deformable bellows (11) providing the sealed connection between on the one hand an internal chamber (12) of the base element (6). ), open towards the container (4) to allow the passage of the product (2) through an opening (13), and other part, at its upper end, an internal chamber (14) of the push button (8) in which opens a hole (15) of the dispensing spout (9), associated with opening-closing means, made at the end upper part of said bellows (11), characterized in that these means consist of: a first internal peripheral collar
(16) réalisée à l'extrémité supérieure du soufflet (11), se logeant dans une gorge annulaire interne (14) du bouton poussoir (8) formant chambre, et en appui sur une de ses parois interne (17) qu'elle enserre élastiquement selon une force prédéterminée, de façon à assurer l'étanchéité ou à être soulevée radialement sous une certaine pression du produit (2) qu'il contient, lors de la compression du soufflet (11), et permettre ainsi son transfert dans la gorge annulaire (14), ladite première collerette (16) étant associée à une seconde collerette (18) du soufflet (11), concentrique à la première (16), se logeant dans la même gorge (14) du bouton poussoir (8), mais en appui sur la paroi externe (19) de celle-ci dans laquelle débouche l'orifice (15) du bec de distribution (9), ladite seconde collerette (18) étant d'une hauteur telle à ne pas obturer ledit orifice (15), l'ouverture ou la fermeture de ce dernier s' effectuant par l'intermédiaire d'une languette de verrouillage concave (20), issue de la collerette (18), de hauteur et de largeur au moins telles à obturer l'orifice (15) par plaquage, ou à le libérer au cours d'une action en rotation, dans un sens ou dans l'autre, sur ledit bouton poussoir (8), par rapport à l'élément de base (6), et conséquemment au soufflet (11), et à sa languette (20), demeurant fixes . (16) made at the upper end of the bellows (11), housed in an internal annular groove (14) of the push button (8) forming a chamber, and resting on one of its inner walls (17) that it encloses elastically according to a predetermined force, so as to seal or to be lifted radially under a certain pressure of the product (2) that it contains, during the compression of the bellows (11), and thus allow its transfer into the throat annular (14), said first flange (16) being associated with a second flange (18) of the bellows (11), concentric with the first (16), being housed in the same groove (14) of the push button (8), but pressing on the outer wall (19) thereof in which opens the orifice (15) of the dispensing spout (9), said second flange (18) being of a height such as not to close said orifice ( 15), the opening or closing of the latter being effected by means of a tab d concave locking (20), resulting from the flange (18), of at least height and width, such as to close the orifice (15) by plating, or to release it during a rotating action, in one direction or in the other, on said push button (8), relative to the base member (6), and consequently the bellows (11), and its tongue (20), remaining fixed.
2. Dispositif selon la revendication 1, caractérisé en ce que le soufflet (11) comporte une base (21) s' adaptant de manière étanche au fond de la chambre interne (12) de l'élément de base (6), et comporte au moins un moyen d'indexation angulaire fixe, par rapport audit élément de base (6), et conséquemment par rapport à sa languette de verrouillage (20) et le bouton poussoir (8) qui, lui, est mobile.2. Device according to claim 1, characterized in that the bellows (11) comprises a base (21) sealingly fitting at the bottom of the inner chamber (12) of the base member (6), and comprises at least one fixed angular indexing means, with respect to said base element (6), and consequently with respect to its locking tongue (20) and the push button (8) which is itself movable.
3. Dispositif selon la revendication 2, caractérisé en ce que les moyens d' indexation du soufflet sont constitués par au moins une dent radiale (22), réalisée sur le fond de la chambre interne (12) de l'élément de base (6), destinée à coopérer avec une encoche correspondante (23) de la base (21) du soufflet (11) •3. Device according to claim 2, characterized in that the indexing means of the bellows are constituted by at least one radial tooth (22), made on the bottom of the inner chamber (12) of the base member (6). ), intended to cooperate with a corresponding notch (23) of the base (21) of the bellows (11) •
4. Dispositif selon la revendication 3, caractérisé en ce que la base (21) du soufflet (11) comporte trois encoches d'indexation et d' anti rotation radiales (23) formant entre elles des angles au centre de 120°, 115°, 125°, s'emboîtant sur des dents correspondantes (22) de la chambre interne (12).4. Device according to claim 3, characterized in that the base (21) of the bellows (11) comprises three notches of indexing and anti rotation radial (23) forming between them angles in the center of 120 °, 115 ° , 125 °, fitting on corresponding teeth (22) of the inner chamber (12).
5. Dispositif selon la revendication 3, caractérisé en ce que la base (6) du système (1) comporte un décroché (42) sur la partie basse (38) de la base (6) permettant l'indexation de la base par rapport à la lamelle (20) du soufflet (11) . 5. Device according to claim 3, characterized in that the base (6) of the system (1) comprises a stall (42) on the lower part (38) of the base (6) for indexing the base relative at the lamella (20) of the bellows (11).
6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le bouton poussoir (8) comporte des moyens d' indexation par rapport à l'élément de base (6), et conséquemment du soufflet (11) et de sa languette de verrouillage (20) du bec (9), qui sont fixes par rapport à l'élément de base (6) .6. Device according to one of claims 1 to 5, characterized in that the push button (8) comprises indexing means relative to the base member (6), and therefore the bellows (11) and its locking tab (20) of the spout (9), which are fixed relative to the base member (6).
7. Dispositif selon la revendication 6, caractérisé ces moyens d'indexation sont constitués par au moins une nervure axiale (24) réalisée sur la paroi interne du bouton poussoir (8) destinée à coopérer avec une rainure correspondante (25) d'une jupe interne (26) de l'élément de base (6) délimitant sa chambre interne (12) d'une part, et un logement périphérique (27) avec la paroi externe (28) dudit élément de base (6) d'autre part, lequel logement (27) est destiné à recevoir la paroi du bouton poussoir (8) et permettre à la fois son coulissement axial et sa rotation à l'intérieur de celui-ci.7. Device according to claim 6, characterized in that said indexing means are constituted by at least one axial rib (24) formed on the inner wall of the push button (8) intended to cooperate with a corresponding groove (25) of a skirt. internal portion (26) of the base member (6) delimiting its inner chamber (12) on the one hand, and a peripheral housing (27) with the outer wall (28) of said base member (6) on the other hand , which housing (27) is intended to receive the wall of the push button (8) and allow both its axial sliding and its rotation inside thereof.
8. Dispositif selon la revendication 7, caractérisé en ce que la jupe (26) de l'élément de base (6) comporte trois rainures (25) destinées à coopérer avec trois nervures axiales correspondantes (24) du bouton poussoir (8), pour constituer leurs moyens d'indexation, selon des angles de 120° chacun.8. Device according to claim 7, characterized in that the skirt (26) of the base member (6) comprises three grooves (25) for cooperating with three corresponding axial ribs (24) of the push button (8), to constitute their indexing means, at angles of 120 ° each.
9. Dispositif selon l'une des revendications 7 ou 8, caractérisé en ce que la hauteur des rainures (25) de la jupe (26) est inférieure d'une part à la hauteur de celle-ci, du fait de décrochements sectoriels (29) qui y sont réalisés, du même côté de chaque rainure9. Device according to one of claims 7 or 8, characterized in that the height of the grooves (25) of the skirt (26) is lower on the one hand to the height thereof, due to sectoral recesses ( 29) made on the same side of each groove
(25), et d'autre part inférieure à la hauteur des nervures (24) du bouton poussoir (8), de manière à autoriser son coulissement axial selon une certaine course, dans une position d'ouverture , et donc de pompage du produit, ou son blocage en fermeture en position haute, après rotation dans le sens des décrochements (29), mettant l'extrémité basse des nervures (24) dudit bouton poussoir (8) en butée contre les décrochements (29) de la jupe (26) .(25), and secondly lower than the height of the ribs (24) of the push button (8), so as to allow its axial sliding in a certain stroke, in an open position, and therefore pumping the product , or locking it in closure in the high position, after rotation in the direction of the recesses (29), putting the lower end of the ribs (24) of said push button (8) in abutment against the recesses (29) of the skirt (26). ).
10. Dispositif selon l'une des revendications 7 à10. Device according to one of claims 7 to
9, caractérisé en ce que l'extrémité périphérique haute de la jupe interne (26) de l'élément de base (6) et l'extrémité périphérique basse de la paroi du bouton poussoir (8) comporte des moyens d' encliquetage (30,31) disposés respectivement à l'extérieur de la jupe (26) et à l'intérieur du bouton poussoir (8), de manière à autoriser une course axiale de celui-ci ainsi que sa rotation en position haute, tout en assurant sa retenue axiale sur l'élément de base (6) .9, characterized in that the upper peripheral end of the inner skirt (26) of the base element (6) and the lower peripheral end of the wall of the push button (8) comprises latching means (30). , 31) disposed respectively outside the skirt (26) and inside the push button (8), so as to allow an axial stroke thereof and its rotation in the up position, while ensuring its axial retention on the base member (6).
11. Dispositif selon l'une des revendications 1 à11. Device according to one of claims 1 to
10, caractérisé en ce que la première collerette périphérique interne (16) du soufflet (11), en appui sur la paroi interne (17) de la gorge (14) du bouton poussoir (8) dans laquelle il est logé, forme une géométrie convexe par rapport à celle-ci, puis concave avant que le produit (2) sorte entre ladite collerette (16) et la paroi interne (17) de la gorge (14) du bouton poussoir (8), avant de s'échapper par son bec (9), puis qui redevient convexe lors de la cessation de la pression positive dans le soufflet (11).10, characterized in that the first inner peripheral flange (16) of the bellows (11), resting on the inner wall (17) of the groove (14) of the push button (8) in which it is housed, forms a geometry convex with respect to the latter, and then concave before the product (2) exits between said flange (16) and the inner wall (17) of the groove (14) of the push button (8), before escaping by its beak (9), and then becomes convex again when the positive pressure in the bellows (11) ceases.
12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce qu'il comporte des moyens de reprise d'air constitué par au moins un évent constitué par : au moins une gorge axiale (32) réalisée sur une partie du filetage (33) de l'élément de base (6), devant coopérer avec un filetage (34) du contenant (4), au moins une gorge radiale (35) en communication avec la gorge axiale (32) est réalisée sous la paroi (36) de la chambre (12) de l'élément de base ( 6) , - des passages axiaux (37) réalisés selon des génératrices d'une cheminée axiale (38) de l'élément de base (6) plongeant dans le contenant (4), ladite cheminée (38) comportant, dans sa partie haute, adjacente à la paroi de la chambre (12), trois bossages (39) disposés périphériquement, définissant entre eux lesdits passages (37), un joint d'étanchéité déformable (40) interposé entre la base du col (3) du contenant (4) et le dessous (36) de la chambre (12) de l'élément de base (6), comportant la gorge radiale (35), lequel joint (40) à un diamètre intérieur sensiblement égal à celui dans lequel s'inscrivent les bossages (39) en laissant libres les passages (37) et un diamètre extérieur tel à ne pas occulter la gorge axiale (32) du filetage (33) de l'élément de base (6), de manière telle que la reprise d'air s'effectue à partir de l'air ambiant extérieur en passant sans discontinuité par la gorge axiale (32), puis la gorge radiale (35) , puis les passages périphériques (39) , vers l'intérieur du contenant (4) .12. Device according to one of claims 1 to 11, characterized in that it comprises air intake means consisting of at least one vent consisting of: at least one axial groove (32) made on a portion of the thread (33) of the base member (6), to cooperate with a thread (34) of the container (4), at least one radial groove (35) in communication with the axial groove (32) is formed under the wall ( 36) of the chamber (12) of the base element (6), - axial passages (37) made according to generatrices of an axial chimney (38) of the base element (6) immersed in the container (4), said chimney (38) having, in its upper part, adjacent to the wall of the chamber (12), three bosses (39) arranged peripherally, defining between them said passages (37), a deformable seal (40) interposed between the base of the neck (3) of the container (4) and the underside (36) of the chamber (12) of the base member (6), comprising nt the radial groove (35), which seal (40) has an inner diameter substantially equal to that in which the bosses (39) are inscribed, leaving free the passages (37) and an outer diameter such as not to obscure the throat axial (32) of the thread (33) of the base member (6), so that the air intake is effected from the outside ambient air without passing discontinuity by the axial groove (32), then the radial groove (35), then the peripheral passages (39), towards the inside of the container (4).
13. Dispositif selon l'une des revendications 1 à 12, caractérisé en ce que les pièces constitutives de la pompe sont réalisées en matières plastiques.13. Device according to one of claims 1 to 12, characterized in that the constituent parts of the pump are made of plastics.
14. Dispositif selon la revendication 13, caractérisé en ce que le soufflet (11) est réalisé en une matière plastique élastiquement déformable.14. Device according to claim 13, characterized in that the bellows (11) is made of an elastically deformable plastic material.
15. Dispositif selon la revendication 14, caractérisé en ce que le soufflet (11) est réalisé en polyuréthane injectable.15. Device according to claim 14, characterized in that the bellows (11) is made of injectable polyurethane.
16. Dispositif selon la revendication 14, caractérisé en ce que le soufflet (11) est réalisé en SANTOPRENE (Polypropylène modifié Caoutchouc Ethylène- Propylène Diène) .16. Device according to claim 14, characterized in that the bellows (11) is made of SANTOPRENE (Polypropylene modified Ethylene-Propylene Diene Rubber).
17. Dispositif selon la revendication 14, caractérisé en ce que le soufflet (11) est réalisé en HYTREL (Thermoplastique Elastomère Ether-Ester) .17. Device according to claim 14, characterized in that the bellows (11) is made of HYTREL (Thermoplastic Elastomer Ether-Ester).
18. Dispositif selon la revendication 14, caractérisé en ce que le soufflet (11) est réalisé en DRYFLEX (Thermoplastique Styrénique Styrène-Ethylène- Butadiène-Styrène) .18. Device according to claim 14, characterized in that the bellows (11) is made of DRYFLEX (Styrene Thermoplastic Styrene-Ethylene-Butadiene-Styrene).
19. Dispositif selon la revendication 14, caractérisé en ce que le soufflet (11) est réalisé en polyéthylènes réalisés ou modifiés pour garantir une nervosité et une tenue acceptable au fluage.19. Device according to claim 14, characterized in that the bellows (11) is made of polyethylenes made or modified to guarantee a nervousness and an acceptable resistance to creep.
20. Dispositif selon l'une des revendications 1 à 19, caractérisé en ce qu'un ressort complémentaire est disposé autour du soufflet. 20. Device according to one of claims 1 to 19, characterized in that a complementary spring is disposed around the bellows.
EP08775718A 2007-04-24 2008-03-12 Device for dispensing a liquid to pasty product with a dosing pump Active EP2136931B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0702965A FR2915467B1 (en) 2007-04-24 2007-04-24 DEVICE AND DISTRIBUTION OF A PASTY LIQUID PRODUCT BY DOSAGE PUMP.
PCT/FR2008/050421 WO2008142308A1 (en) 2007-04-24 2008-03-12 Device for dispensing a liquid to pasty product with a dosing pump

Publications (2)

Publication Number Publication Date
EP2136931A1 true EP2136931A1 (en) 2009-12-30
EP2136931B1 EP2136931B1 (en) 2011-08-17

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EP08775718A Active EP2136931B1 (en) 2007-04-24 2008-03-12 Device for dispensing a liquid to pasty product with a dosing pump

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US (1) US8240516B2 (en)
EP (1) EP2136931B1 (en)
AT (1) ATE520472T1 (en)
ES (1) ES2371986T3 (en)
FR (1) FR2915467B1 (en)
WO (1) WO2008142308A1 (en)

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US8240516B2 (en) 2012-08-14
ATE520472T1 (en) 2011-09-15
WO2008142308A1 (en) 2008-11-27
FR2915467B1 (en) 2009-06-05
EP2136931B1 (en) 2011-08-17
US20100116849A1 (en) 2010-05-13
FR2915467A1 (en) 2008-10-31
ES2371986T3 (en) 2012-01-12

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