EP0461010A1 - Mixing dispenser - Google Patents

Mixing dispenser Download PDF

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Publication number
EP0461010A1
EP0461010A1 EP91401415A EP91401415A EP0461010A1 EP 0461010 A1 EP0461010 A1 EP 0461010A1 EP 91401415 A EP91401415 A EP 91401415A EP 91401415 A EP91401415 A EP 91401415A EP 0461010 A1 EP0461010 A1 EP 0461010A1
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EP
European Patent Office
Prior art keywords
packaging according
lever
distributors
containers
head
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
EP91401415A
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German (de)
French (fr)
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EP0461010B1 (en
Inventor
Jean-Louis Bougamont
Alain Behar
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S O F A B
Original Assignee
S O F A B
Societe Francaise dAerosols et de Bouchage
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
    • 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
    • B05B11/1081—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping
    • B05B11/1084—Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping each liquid or other fluent material being pumped by a separate pump
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/68—Dispensing two or more contents, e.g. sequential dispensing or simultaneous dispensing of two or more products without mixing them
    • B65D83/682—Dispensing two or more contents, e.g. sequential dispensing or simultaneous dispensing of two or more products without mixing them the products being first separated, but finally mixed, e.g. in a dispensing head

Definitions

  • the dispensers in question thus use either valves, possibly metering, or pumps, preferably with precompression, whose axial, tubular control rod serves as an evacuation nozzle under a dispensing head with variable pusher, which will usually carry a spray nozzle capable of projecting a spray of product in the form of an aerosol or at least finely sprayed.
  • Their main organs are fairly widely standardized.
  • the object of the invention is to provide such packaging, very miniaturized, suitable for storing and transporting the components of an evolving product, and then for mixing them for the delivery of the latter, this packaging making it possible in particular to present in a convenient form. drugs with extemporaneous preparation.
  • a frequently encountered difficulty is indeed that a completely minimal dose of one of the components, for example the active product, should be mixed with a lower dose of the second, sometimes of a different viscosity, for example an excipient: the ratio of these two partial doses easily reaches 3 and it can exceed 5; it must therefore also be that of the capacities of the two distributors as well as to a certain extent that of the capacities of their containers.
  • the packaging in question will essentially consist of a box enclosing two containers side by side, the containers of which are closed by distributors with axial jet fitted in parallel in a sealed manner under a common head which connects them to the same dispensing nozzle, the addition of 'A compensating member balancing strokes and driving forces on the two distributors; to prevent it from altering the functioning of the head, this member will normally be mounted at the opposite end of the containers.
  • it will be a distributor lever articulated on an axis perpendicular to those of the two distributors, in the part of the housing supporting the bottoms of the containers.
  • the dispenser box shown in FIG. 1 comprises a case 1 closed by the shell 2 of a dispensing head carrying a spray nozzle 3.
  • This shell has a cylindrical skirt 2a which guides it over that 1a of the case 1, internally in the example described, the most advantageous in general as regards the bulk; it is retained there by pawls. 4 engaged under shoulders created here by two lights 5.
  • Three depressions 6 allow the case to be held between the fingers and to press the case and head towards each other in translation to project its content. , in this case a binary drug.
  • the device contains two cartridges 7 a and 7 b , of different capacities, carrying metering pumps 8 a and 8 b respectively with tubular nozzles 9 a and 9 b .
  • the respective intrinsic capacities of the container 7 a containing the active product and container 7 b containing the excipient are 5 and 12 ml, the effective capacities of 2 and 10 ml approximately.
  • the head first comprises here a socket 10 provided with two injection orifices 11, the seat 11 a of which recesses a spiral nozzle with three branches surrounded by a flange 11 b .
  • Two series pushers 12 fit respectively, face to face, on the flanges 11b which thus replace their usual nozzles; the whole, symmetrical, comes to relate in the shell 2 where it mounts indifferently by housing in its ribs 2 b to fit on its flange 2 c that a channel 2 d connects to the nozzle 3.
  • Is thus constituted a monobloc assembly provided with two twin seats 13 a , 13 b on which the nozzles 9 a , 9 b will fit in leaktight manner; having two spray stages 11 and 3, it comprises a mixing chamber 10 a of a capacity here equal to the sum of those of the pumps and which makes it possible to prepare the doses one by one with a very intimate mixing of the components, reducing their storage time to that which separates two uses.
  • the mixing chamber can be arranged horizontally, provided with an air inlet, supplied by oblique orifices; these may not be diametrically opposed and, if we agree to break the symmetry, they can even be of two different types, at least one for example not equipped with a vortex nozzle ...
  • the chamber can even reduce to a simple channel with two inputs if one seeks to obtain a simultaneous injection while avoiding any storage; omission made from nozzle 3, we can then consider molding the head in one piece.
  • the proportions of the skirts can also be modified, such as the position of the depressions 6 inverted to lead to using the device in the inverted position.
  • a compensating member distributing the forces exerted on the jets of the pumps 8 a and 8 b .
  • the bottoms of the containers 7 a and 7 b do not rest directly on the bottom of the case 1 but on a lever 14; the latter comprises at its ends two upper bosses 15 a , 15 b in a spherical cap and, in the meantime, two lower housings 16 a , 16 b associated with respective pins 17 a , 17 b creating two possible axes of pivoting; it therefore has here a symmetrical shape which allows it to be positioned interchangeably.
  • the walls of the case 1 carry ribs 1 a , 1 b capable of guide each of the cartridges 7 a and 7 b .
  • Its bottom carries a single knife 16 on which the sole housing 16 b of the lever rests, as well as two abutment ribs 18 a , 18 b ; it has internally a belt 19 carrying two grooves 19 a giving free passage to the pins 17a and two notches 19 a which form retaining notches for the pins 17 b .
  • the lever 14 is thus articulated on an axis offset towards the axis of the largest of the containers.
  • the ratio of the lever arms should be between 1.2 and 1.8 and will preferably be taken between 1.4 and 1.6.
  • the two pumps 8 a and 8 b could have respectively strokes of 2 and 6 mm respectively for internal diameters of 5 and 6.5 mm, ie a section ratio of 1.7 for a stroke ratio of 3, and their return springs for forces ranging from 4 and 5 N (ratio 1.25) at rest to obtain the desired seal, at 12 and 23 N (ratio 1.91) at the bottom of the stroke (which corresponds to stiffnesses of 4 and 3 N / mm).
  • the differences in strokes which result therefrom are compensated for by the tilting of the balancing table which causes the container 7 a to move back , thereby reducing the stroke of its pump accordingly.
  • the pump 8 has arrived in the first end position under a force of the operator a bit less than 70 N, followed by the second, the carrier thus completing scan the active product. In practice, a constant effort of the order of 50 N will lead to correct operation.
  • the bosses 15 a and 15 b could be cylindrical, but this supposes that the containers have a flat bottom.
  • the ratio of the lever arms is independent of the inclination of the table; any modification and in particular any progressive variation of the radii of curvature of the bosses makes it possible to change this ratio to a certain extent in order to correct the equilibrium law.
  • the compensating member is limited to the assembly of a shelf 20 that pushes a spring 21 guided under the container 7 a by a base 22 and that retains in this base its stem 20 a .

Abstract

The subject of the invention is a miniaturised package capable of storing and transporting components of a product to be prepared, and then of mixing them for dispensing the latter. <??>Essentially constituted from a casing (1) housing, side by side, two containers (7a, 7b) whose receptacles are closed by axial jet dispensers fitted in a parallel and sealed manner under a common head (2) which connects them to the same dispensing nozzle (3), the addition of a compensating member (14) balancing the travels and penetrating forces on the two dispensers (8a, 8b), this package allows, in particular, the presentation of medicines for extemporaneous preparation in a convenient form. <IMAGE>

Description

Il est connu de commercialiser de nombreux produits dans des récipients équipés de dispensateurs manuels permettant d'en délivrer et souvent d'en doser la quantité voulue, que ce soit sous l'effet d'un simple pompage ou sous celui de l'énergie d'un gaz propulseur.It is known to market many products in containers equipped with manual dispensers making it possible to deliver and often to dose the desired quantity, whether under the effect of a simple pumping or under that of the energy of 'a propellant.

C'est par exemple le cas de parfums ou de divers médicaments, le plus souvent destinés au traitement des voies respiratoires, utilisés à très faibles doses donc généralement vendus sous des conditionnements miniatures, aisément transportables.This is for example the case of perfumes or various drugs, most often intended for the treatment of the respiratory tracts, used in very low doses therefore generally sold in miniature packages, easily transportable.

Les dispensateurs en question utilisent ainsi soit des valves, éventuellement doseuses, soit des pompes, de préférence à précompression, dont la tige de commande axiale, tubulaire, sert de gicleur d'évacuation sous une tête dispensatrice à poussoir de structure variable, qui portera usuellement une buse de pulvérisation apte à projeter une giclée de produit sous forme d'aérosol ou du moins finement pulvérisée. Leurs principaux organes sont assez largement normalisés.The dispensers in question thus use either valves, possibly metering, or pumps, preferably with precompression, whose axial, tubular control rod serves as an evacuation nozzle under a dispensing head with variable pusher, which will usually carry a spray nozzle capable of projecting a spray of product in the form of an aerosol or at least finely sprayed. Their main organs are fairly widely standardized.

L'industrie chimique est amenée d'autre part, en particulier dans les domaines cosmétique et pharmaceutique, à proposer des produits de plus en plus complexes et instables, et diverses préparations doivent être élaborées aussi tard que possible avant emploi car leurs propriétés s'altèrent progressivement sous l'effet de phénomènes variés. Ceci a conduit à élaborer des mécanismes divers permettant d'effectuer un mélange plus ou moins intime de deux composants avant leur mise en service, voire dose après dose, au moment même de l'utilisation, de façon "extemporanée". Le conditionnement renfermera alors deux conteneurs jumeaux, généralement disposés côte à côte et fonctionnant en parallèle ; un exemple en est fourni par la publication de brevet FR 1 353 494.The chemical industry is led on the other hand, in particular in the cosmetic and pharmaceutical fields, to offer increasingly complex and unstable products, and various preparations must be prepared as late as possible before use because their properties deteriorate. gradually under the effect of various phenomena. This has led to the development of various mechanisms enabling a more or less intimate mixture of two components to be carried out before putting them into service, or even dose after dose, at the very moment of use, in an "extemporaneous" manner. The packaging will then contain two twin containers, generally arranged side by side and operating in parallel; an example is provided by patent publication FR 1 353 494.

L'invention a pour objet de fournir un tel conditionnement, très miniaturisé, apte au stockage et au transport des composants d'un produit évolutif, puis à leur mélange pour la délivrance de ce dernier, ce conditionnement permettant notamment de présenter sous une forme commode des médicaments à préparation extemporanée.The object of the invention is to provide such packaging, very miniaturized, suitable for storing and transporting the components of an evolving product, and then for mixing them for the delivery of the latter, this packaging making it possible in particular to present in a convenient form. drugs with extemporaneous preparation.

Elle a donc en particulier pour objet de créer un dispositif compact permettant de faire se correspondre les conditions de délivrance des deux composants, en fournissant un moyen de concilier courses des distributeurs, efforts exercés, temps et pressions d'injection dans l'espace de mélange ...It therefore has in particular the object of creating a compact device making it possible to make the conditions of delivery of the two components correspond, by providing a means of reconciling distributor strokes, forces exerted, time and pressures of injection into the mixing space. ...

Une difficulté fréquemment rencontrée est en effet qu'une dose tout à fait minime de l'un des composants, par exemple le produit actif, devra être mélangée à une dose moins faible du second, d'une viscosité parfois différente, par exemple un excipient : le rapport de ces deux doses partielles atteint facilement 3 et il peut dépasser 5 ; ce doit donc être aussi celui des capacités des deux distributeurs ainsi dans une certaine mesure que des contenances de leurs récipients.A frequently encountered difficulty is indeed that a completely minimal dose of one of the components, for example the active product, should be mixed with a lower dose of the second, sometimes of a different viscosity, for example an excipient: the ratio of these two partial doses easily reaches 3 and it can exceed 5; it must therefore also be that of the capacities of the two distributors as well as to a certain extent that of the capacities of their containers.

Le conditionnement en question sera essentiellement constitué d'un boîtier enfermant côte à côte deux conteneurs dont les récipients sont fermés par des distributeurs à gicleur axial emboîtés parallèlement de façon étanche sous une tête commune qui les raccorde à une même buse dispensatrice, l'adjonction d'un organe compensateur équilibrant courses et efforts d'enfoncement sur les deux distributeurs ; pour éviter qu'il n'altère le fonctionnement de la tête, cet organe sera normalement monté à l'extrémité opposée des conteneurs.The packaging in question will essentially consist of a box enclosing two containers side by side, the containers of which are closed by distributors with axial jet fitted in parallel in a sealed manner under a common head which connects them to the same dispensing nozzle, the addition of 'A compensating member balancing strokes and driving forces on the two distributors; to prevent it from altering the functioning of the head, this member will normally be mounted at the opposite end of the containers.

De préférence il s'agira d'un levier répartiteur articulé sur un axe perpendiculaire à ceux des deux distributeurs, dans la partie du boîtier supportant les fonds des récipients.Preferably it will be a distributor lever articulated on an axis perpendicular to those of the two distributors, in the part of the housing supporting the bottoms of the containers.

Diverses autres caractéristiques ressortiront d'un double exemple, donné ci-dessous en référence aux dessins, qui représentent :

  • figure 1 : une vue au repos d'un boîtier dispensateur selon l'invention,
  • figure 2 : une vue avec coupe selon II-II de la figure 1,
  • figure 3 : une coupe selon III-III de la figure 1,
  • fiqure 4 : une coupe selon IV-IV des figures 1 à 3,
  • figure 5 : une coupe, au repos, selon V-V de la figure 2,
  • figure 6 : une coupe similaire, en fin de fonctionnement,
  • figure 7 : une coupe d'une variante.
Various other characteristics will emerge from a double example, given below with reference to the drawings, which represent:
  • FIG. 1: a view at rest of a dispenser unit according to the invention,
  • FIG. 2: a view with section on II-II of FIG. 1,
  • FIG. 3: a section on III-III of FIG. 1,
  • Figure 4: a section along IV-IV of Figures 1 to 3,
  • FIG. 5: a section, at rest, according to VV of FIG. 2,
  • FIG. 6: a similar section, at the end of operation,
  • Figure 7: a section of a variant.

Extérieurement, le boîtier dispensateur représenté figure 1 comprend un étui 1 fermé par la coque 2 d'une tête dispensatrice porteuse d'une buse de pulvérisation 3. Cette coque possède une jupe cylindrique 2a qui la guide sur celle 1a de l'étui 1, intérieurement dans l'exemple décrit, le plus avantageux en général quant à l'encombrement ; elle y est retenue par des cliquets.4 engagés sous des épaulements créés ici par deux lumières 5. Trois dépressions 6 permettent de tenir le boîtier entre les doigts et de presser étui et tête l'un vers l'autre en translation pour projeter son contenu, en l'occurrence un médicament binaire.Externally, the dispenser box shown in FIG. 1 comprises a case 1 closed by the shell 2 of a dispensing head carrying a spray nozzle 3. This shell has a cylindrical skirt 2a which guides it over that 1a of the case 1, internally in the example described, the most advantageous in general as regards the bulk; it is retained there by pawls. 4 engaged under shoulders created here by two lights 5. Three depressions 6 allow the case to be held between the fingers and to press the case and head towards each other in translation to project its content. , in this case a binary drug.

Intérieurement, comme le montrent les figures 2 à 6, l'appareil renferme deux cartouches 7a et 7b, de capacités différentes, porteuses respectivement de pompes doseuses 8a et 8b à gicleurs tubulaires 9a et 9b. Dans cet exemple, les capacités intrinsèques respectives du récipient 7a renfermant le produit actif et du récipient 7b renfermant l'excipient sont de 5 et 12 ml, les contenances effectives de 2 et 10 ml environ.Internally, as shown in Figures 2 to 6, the device contains two cartridges 7 a and 7 b , of different capacities, carrying metering pumps 8 a and 8 b respectively with tubular nozzles 9 a and 9 b . In this example, the respective intrinsic capacities of the container 7 a containing the active product and container 7 b containing the excipient are 5 and 12 ml, the effective capacities of 2 and 10 ml approximately.

La tête comprend d'abord ici une douille 10 munie de deux orifices d'injection 11 dont le siège 11a dessine en creux une buse en spirale à trois branches entourée d'une collerette 11b. Deux poussoirs de série 12 s'emboitent respectivement, face à face, sur les collerettes 11b qui remplacent ainsi leurs buses habituelles ; l'ensemble, symétrique, vient se rapporter dans la coque 2 où il se monte indifféremment en se logeant dans ses nervures 2b pour s'emboiter sur sa collerette 2c qu'un canal 2d relie à la buse 3. Se trouve ainsi constitué un ensemble monobloc pourvu de deux sièges jumeaux 13a, 13b sur lesquels les gicleurs 9a, 9b s'emboîteront de façon étanche ; possédant deux étages de pulvérisation 11 et 3, il comprend une chambre de mélange 10a d'une capacité égale ici à la somme de celles des pompes et qui permet de préparer les doses une à une avec un brassage très intime des composants, en réduisant leur temps de stockage à celui qui sépare deux utilisations.The head first comprises here a socket 10 provided with two injection orifices 11, the seat 11 a of which recesses a spiral nozzle with three branches surrounded by a flange 11 b . Two series pushers 12 fit respectively, face to face, on the flanges 11b which thus replace their usual nozzles; the whole, symmetrical, comes to relate in the shell 2 where it mounts indifferently by housing in its ribs 2 b to fit on its flange 2 c that a channel 2 d connects to the nozzle 3. Is thus constituted a monobloc assembly provided with two twin seats 13 a , 13 b on which the nozzles 9 a , 9 b will fit in leaktight manner; having two spray stages 11 and 3, it comprises a mixing chamber 10 a of a capacity here equal to the sum of those of the pumps and which makes it possible to prepare the doses one by one with a very intimate mixing of the components, reducing their storage time to that which separates two uses.

D'autres structures de têtes sont concevables en fonction des produits utilisés, du mélange désiré et des pertes de charge acceptables. C'est ainsi que la chambre de mélange peut être disposée horizontalement, dotée d'une entrée d'air, alimentée par des orifices obliques ; ceux-ci peuvent ne pas être diamétralement opposés et, si l'on accepte de rompre la symétrie, ils peuvent même être de deux types différents, l'un au moins par exemple non doté d'une buse tourbillonnaire ... La chambre peut même se réduire à un simple canal à deux entrées si l'on cherche à obtenir une injection simultanée en évitant tout stockage ; omission faite de la buse 3, on peut alors envisager de mouler la tête en une seule pièce.Other head structures are conceivable depending on the products used, the desired mixture and acceptable pressure drops. Thus the mixing chamber can be arranged horizontally, provided with an air inlet, supplied by oblique orifices; these may not be diametrically opposed and, if we agree to break the symmetry, they can even be of two different types, at least one for example not equipped with a vortex nozzle ... The chamber can even reduce to a simple channel with two inputs if one seeks to obtain a simultaneous injection while avoiding any storage; omission made from nozzle 3, we can then consider molding the head in one piece.

Les proportions des jupes peuvent aussi être modifiées, comme la position des dépressions 6 inversée pour conduire à utiliser l'appareil en position renversée.The proportions of the skirts can also be modified, such as the position of the depressions 6 inverted to lead to using the device in the inverted position.

Selon l'invention il existe à la partie inférieure du boîtier un organe compensateur répartissant les efforts exercés sur les gicleurs des pompes 8a et 8b . Comme le montrent notamment les figures 4 à 6, les fonds des récipients 7a et 7b ne reposent pas directement sur le fond de l'étui 1 mais sur un levier 14 ; celui-ci comprend à ses extrémités deux bossages supérieurs 15a, 15b en calotte sphérique et, dans l'intervalle, deux logements inférieurs 16a, 16b associés à des tourillons respectifs 17a, 17b créant deux axes possibles de pivotement ; il possède donc ici une forme symétrique qui permet de le mettre en place indifféremment.According to the invention there is at the lower part of the housing a compensating member distributing the forces exerted on the jets of the pumps 8 a and 8 b . As shown in particular in FIGS. 4 to 6, the bottoms of the containers 7 a and 7 b do not rest directly on the bottom of the case 1 but on a lever 14; the latter comprises at its ends two upper bosses 15 a , 15 b in a spherical cap and, in the meantime, two lower housings 16 a , 16 b associated with respective pins 17 a , 17 b creating two possible axes of pivoting; it therefore has here a symmetrical shape which allows it to be positioned interchangeably.

Les parois de l'étui 1 portent des nervures 1a, 1b aptes à guider chacune des cartouches 7a et 7b. Son fond porte un unique couteau 16 sur lequel repose le seul logement 16b du levier, ainsi que deux nervures de butée 18a, 18b ; il possède intérieurement une ceinture 19 porteuse de deux saignées 19a donnant libre passage aux tourillons 17a et de deux échancrures 19a qui forment des crans de retenue pour les tourillons 17b. Le levier 14 se trouve ainsi articulé sur un axe décalé vers l'axe du plus volumineux des conteneurs.The walls of the case 1 carry ribs 1 a , 1 b capable of guide each of the cartridges 7 a and 7 b . Its bottom carries a single knife 16 on which the sole housing 16 b of the lever rests, as well as two abutment ribs 18 a , 18 b ; it has internally a belt 19 carrying two grooves 19 a giving free passage to the pins 17a and two notches 19 a which form retaining notches for the pins 17 b . The lever 14 is thus articulated on an axis offset towards the axis of the largest of the containers.

Au montage, et après pose du levier 14, il suffit de placer les deux conteneurs, ce qui fait remonter le levier en butée sur la nervure 18b, son inclinaison sensiblement compensée par les différences de longueur, puis d'emboîter la tête dans l'étui sur les gicleurs jusqu'à encliquetage.During assembly, and after fitting the lever 14, it suffices to place the two containers, which brings the lever up to abutment on the rib 18b , its inclination substantially compensated for by the differences in length, then to fit the head into the case on the sprinklers until it clicks.

Etui et tête restent mobiles l'un par rapport à l'autre. Lorsque l'opérateur les pressera entre ses doigts, parallèlement aux axes des conteneurs, sa force va s'exercer indirectement sur le levier, agissant à l'emplacement de son articulation 16 ; celui-ci forme donc ici une table d'équilibrage à bras inégaux en bascule sur le fond du boîtier, ne commandant pas directement les courses des pompes mais répartissant la force exercée sur son axe 16 dans un rapport inverse à celui de ses deux bras. Dans les limites de son débattement il équilibre ainsi l'enfoncement des gicleurs en s'adaptant à tout rapport de courses.Case and head remain movable relative to each other. When the operator presses them between his fingers, parallel to the axes of the containers, his force will be exerted indirectly on the lever, acting at the location of its articulation 16; the latter therefore forms here a balancing table with unequal arms in rocking on the bottom of the housing, not directly controlling the strokes of the pumps but distributing the force exerted on its axis 16 in an inverse relationship to that of its two arms. Within the limits of its travel it thus balances the sinking of the sprinklers by adapting to any race report.

En général, le rapport des bras de levier devra être compris entre 1,2 et 1,8 et sera pris de préférence entre 1,4 et 1,6.In general, the ratio of the lever arms should be between 1.2 and 1.8 and will preferably be taken between 1.4 and 1.6.

Les deux pompes 8a et 8b pourraient avoir respectivement par exemple des courses de 2 et 6 mm pour des diamètres internes de 5 et 6,5 mm soit un rapport de sections de 1,7 pour un rapport de courses de 3, et leurs ressorts de renvoi des forces allant de 4 et 5 N (rapport 1,25) au repos pour obtenir l'étanchéité voulue, à 12 et 23 N (rapport 1,91) à fond de course (ce qui correspond à des raideurs de 4 et 3 N/mm).The two pumps 8 a and 8 b could have respectively strokes of 2 and 6 mm respectively for internal diameters of 5 and 6.5 mm, ie a section ratio of 1.7 for a stroke ratio of 3, and their return springs for forces ranging from 4 and 5 N (ratio 1.25) at rest to obtain the desired seal, at 12 and 23 N (ratio 1.91) at the bottom of the stroke (which corresponds to stiffnesses of 4 and 3 N / mm).

Si, estimant les frottements à 3 N, on désire aussi obtenir des pressions de pulvérisation voisines, de l'ordre de 4 bars par exemple pour des temps de fonctionnement bien entendu sensiblement égaux, ces valeurs étant supposées constantes, les efforts d'enfoncement nécessaires iront de 15 et 22 N (rapport 1,47) à 23 et 40 N (rapport 1,71) environ.If, estimating the friction at 3 N, it is also desired to obtain neighboring spraying pressures, of the order of 4 bars for example for operating times which are of course substantially equal, these values being assumed to be constant, the driving forces required will go from 15 and 22 N (ratio 1.47) to 23 and 40 N (ratio 1.71) approximately.

Si alors l'axe d'articulation est placé par exemple à une distance égale à 0,40 fois la longueur active du levier, ce qui conduit à un rapport de 1,5 des bras de levier, valeur comprise entre les rapports inverses respectifs des forces extrêmes, la résistance de la pompe du récipient 7b, qui contient l'excipient, sera vaincue la première, sous un effort de l'opérateur un peu supérieur à 30 N, dont elle reçoit la majeure partie, mais immédiatement suivie par la pompe 8a ; ceci amorce le fonctionnement, le jeu des pressions ajustant le rapport des courses par rapport au produit 3/2 x 4/3 = 2 de ceux des bras du levier 14 et des raideurs des ressorts de renvoi des pompes. Comme on le voit sur la figure 6, les écarts de courses qui en résultent se trouvent compensés par le basculement de la table d'équilibrage qui fait reculer le récipient 7a, réduisant d'autant la course de sa pompe.If then the hinge pin is placed for example at a distance equal to 0.40 times the active length of the lever, which leads to a ratio of 1.5 of the lever arms, value between the respective inverse ratios of the extreme forces, the resistance of the container pump 7 b , which contains the excipient, will be overcome first, under an operator effort a little more than 30 N, from which it receives the major part, but immediately followed by the pump 8 a ; this initiates operation, the play of pressures adjusting the stroke ratio with respect to the product 3/2 x 4/3 = 2 of those of the arms of the lever 14 and of the stiffnesses of the return springs of the pumps. As can be seen in FIG. 6, the differences in strokes which result therefrom are compensated for by the tilting of the balancing table which causes the container 7 a to move back , thereby reducing the stroke of its pump accordingly.

La pompe 8a arrive la première en fin de course sous un effort de l'opérateur un peu inférieur à 70 N, suivie de la seconde, l'excipient achevant ainsi de balayer le produit actif. En pratique un effort constant de l'ordre de 50 N conduira à un fonctionnement correct.The pump 8 has arrived in the first end position under a force of the operator a bit less than 70 N, followed by the second, the carrier thus completing scan the active product. In practice, a constant effort of the order of 50 N will lead to correct operation.

Une augmentation du rapport des bras de levier retarderait le fonctionnement de la pompe 8a qui distribue le produit actif vis-à-vis de celui de la pompe 8b et, jusqu'à un maximum de 1,9 environ, minorerait l'effort final nécessaire. Au delà de cette valeur, elle conduirait à terminer en n'injectant dans la chambre que du produit actif.An increase in the ratio of the lever arms would delay the operation of the pump 8 a which distributes the active product vis-à-vis that of the pump 8 b and, up to a maximum of about 1.9, would reduce the effort final required. Beyond this value, it would lead to completion by injecting into the chamber only active product.

On voit ainsi que l'adaptation du levier à la fourchette des rapports des forces extrêmes régit la séquence de fonctionnement et en particulier la durée de la phase synchrone ; l'on comprend aussi que l'on ait intérêt à réduire cette fourchette dans la mesure permise par les tolérances de fabrication, en particulier si la délivrance du produit requiert un faible volume de chambre de mélange, mais non pas en principe à 1 a supprimer entièrement.It can thus be seen that the adaptation of the lever to the range of the extreme force ratios governs the operating sequence and in particular the duration of the synchronous phase; it is also understood that it is advantageous to reduce this range to the extent permitted by manufacturing tolerances, in particular if the delivery of the product requires a small volume of mixing chamber, but not in principle to 1 to be deleted entirely.

Il convient en fait de tenir compte des volumes morts créés sur 1 mm environ par l'inversion des mécanismes en bout de course : c'est ainsi que deux pompes de 5,5 mm de diamètre interne pour 2,2 et 6,6 mm de course délivrent des doses respectives de l'ordre de 28 et 135 µl.It is in fact advisable to take account of the dead volumes created on approximately 1 mm by the inversion of the mechanisms at the end of travel: this is how two pumps of 5.5 mm of internal diameter for 2.2 and 6.6 mm of racing deliver respective doses of the order of 28 and 135 µl.

Enfin un dispositif semblable pourrait être employé pour ajuster le fonctionnement d'un dispensateur possédant deux conteneurs identiques et les explications ci-dessus se transposent facilement aux cas où les distributeurs seraient non des pompes mais des valves doseuses.Finally, a similar device could be used to adjust the operation of a dispenser having two identical containers and the above explanations are easily transposed to cases where the dispensers are not pumps but metering valves.

Les bossages 15a et 15b pourraient être cylindriques mais ceci suppose que les récipients aient un fond plat. De même, selon le dessin représenté, le rapport des bras de levier est indépendant de l'inclinaison de la table ; toute modification et notamment toute variation progressive des rayons de courbure des bossages permet dans une certaine mesure de faire évoluer ce rapport pour corriger la loi d'équilibre.The bosses 15 a and 15 b could be cylindrical, but this supposes that the containers have a flat bottom. Similarly, according to the drawing shown, the ratio of the lever arms is independent of the inclination of the table; any modification and in particular any progressive variation of the radii of curvature of the bosses makes it possible to change this ratio to a certain extent in order to correct the equilibrium law.

Dans la variante de la figure 7 où les éléments conservés ont gardé leurs références mais où la douille 10 est disposée horizontalement, l'organe compensateur se limite à l'ensemble d'une tablette 20 que repousse un ressort 21 guidé sous le récipient 7a par une embase 22 et que retient dans cette embase sa tige 20a.In the variant of Figure 7 where the preserved elements have kept their references but where the sleeve 10 is arranged horizontally, the compensating member is limited to the assembly of a shelf 20 that pushes a spring 21 guided under the container 7 a by a base 22 and that retains in this base its stem 20 a .

On peut par exemple supposer le ressort 21 identique au ressort de renvoi de la pompe 8a et comprimé également au départ ; si la tête 2 attaque en même temps les deux gicleurs 9a et 9b, ces deux ressorts céderont également sous son effort et la course de la pompe 8a se trouvera ainsi réduite de moitié par rapport à celle de la pompe 8b.We can for example assume the spring 21 identical to the return spring of the pump 8 a and also compressed at the start; if the head 2 attacks the two nozzles 9 a and 9 b at the same time, these two springs will also yield under its effort and the stroke of the pump 8 a will thus be reduced by half compared to that of the pump 8 b .

Cette dernière variante est cependant moins avantageuse que la précédente ; elle exigerait en particulier pour offrir la même souplesse théorique l'emploi d'un organe double, comportant un ressort sous chacun des conteneurs.This last variant is however less advantageous than the previous one; it would require in particular to offer the same theoretical flexibility the use of a double member, comprising a spring under each of the containers.

Claims (12)

Conditionnement miniaturisé, apte à stocker les composants d'un produit évolutif, puis à les mélanger pour délivrer ce dernier, essentiellement constitué d'un boîtier enfermant côte à côte deux conteneurs fermés par des distributeurs à gicleur axial emboîtés parallèlement de façon étanche sous une tête commune qui les raccorde à une même buse dispensatrice, caractérisé par l'adjonction d'un organe compensateur (14, 20) équilibrant courses et efforts sur les deux distributeurs.Miniaturized packaging, capable of storing the components of an evolving product, then mixing them to deliver the latter, essentially consisting of a box enclosing two containers side by side closed by axial nozzle distributors nested in parallel in a sealed manner under a head common which connects them to the same dispensing nozzle, characterized by the addition of a compensating member (14, 20) balancing strokes and forces on the two distributors. Conditionnement selon la revendication 1, caractérisé en ce que cet organe est monté à l'extrémité des conteneurs (7a, 7b) opposée aux distributeurs (8a, 8b).Packaging according to Claim 1, characterized in that this member is mounted at the end of the containers (7a, 7b) remote from the distributors (8a, 8b). Conditionnement selon la revendication 2, caractérisé en ce que l'organe compensateur est un levier répartiteur (14) articulé sur un axe (16) perpendiculaire à ceux des deux distributeurs, dans la partie du boîtier (1) supportant les fonds des conteneurs.Packaging according to claim 2, characterized in that the compensating member is a distributor lever (14) articulated on an axis (16) perpendicular to those of the two distributors, in the part of the housing (1) supporting the bottoms of the containers. Conditionnement selon la revendication 3, à distributeurs de capacités différentes, caractérisé en en ce que le levier forme une table d'équilibrage à bras inégaux, articulée sur un axe décalé vers l'axe du conteneur (7b) de plus forte contenance.Packaging according to claim 3, with distributors of different capacities, characterized in that the lever forms a balancing table with unequal arms, articulated on an axis offset towards the axis of the container (7 b ) of greater capacity. Conditionnement selon la revendication 4, caractérisé en ce que le levier possède en soi une forme symétrique.Packaging according to claim 4, characterized in that the lever has in itself a symmetrical shape. Conditionnement selon la revendication 5, caractérisé en ce que le levier possède à ses extrémités deux bossages supérieurs à variation progressive de courbure.Packaging according to claim 5, characterized in that the lever has at its ends two upper bosses with progressive variation of curvature. Conditionnement selon la revendication 5, caractérisé en ce que le levier possède à ses extrémités deux bossages supérieurs en forme de calotte (15a, 15b) et, dans l'intervalle, deux logements inférieurs d'articulation (16a, 16b).Packaging according to claim 5, characterized in that the lever has at its ends two upper boss-shaped bosses (15 a , 15 b ) and, in the meantime, two lower articulation housings (16 a , 16 b ) . Conditionnement selon la revendication 3, caractérisé en ce que le rapport des bras de levier est compris dans la fourchette des rapports extrêmes des forces des ressorts de renvoi des distributeurs.Packaging according to Claim 3, characterized in that the ratio of the lever arms is included in the range of the extreme ratios of the forces of the return springs of the distributors. Conditionnement selon la revendication 3, caractérisé en ce que le rapport des bras de levier est compris entre 1,2 et 1,8.Packaging according to claim 3, characterized in that the ratio of the lever arms is between 1.2 and 1.8. Conditionnement selon l'une des revendications 1 à 9, caractérisé en ce que la tête renferme une chambre de mélange (10a).Packaging according to one of claims 1 to 9, characterized in that the head contains a mixing chamber (10 a ). Conditionnement selon l'une des revendications 1 à 9, caractérisé en ce que la tête comprend une douille (10) munie de deux orifices d'injection (11) dont les sièges sont entourés de collerettes respectives sur lesquelles deux poussoirs de série (12) s'emboîtent face à face, l'ensemble venant se rapporter sur une coque (2 ) en s'emboîtant à son tour sur sa collerette (2c) qu'un canal (2d) relie à la buse dispensatrice (3), pour constituer un ensemble monobloc pourvu de deux sièges jumeaux (13a, 13b) pour l'emboîtement des gicleurs (9a, 9b).Packaging according to one of claims 1 to 9, characterized in that the head comprises a socket (10) provided with two injection orifices (11) whose seats are surrounded by respective flanges on which two standard pushers (12) interlock face opposite, the assembly coming to relate to a shell (2) by fitting in turn on its flange (2 c ) which a channel (2 d ) connects to the dispensing nozzle (3), to constitute an assembly monobloc provided with two twin seats (13 a , 13 b ) for fitting sprinklers (9 a , 9 b ). Conditionnement selon la revendication 11, caractérisé en ce que les deux orifices d'injection alimentent une chambre de mélange dans laquelle l'un au moins engendre un mouvement tourbillonnaire.Packaging according to claim 11, characterized in that the two injection orifices feed a mixing chamber in which at least one generates a vortex movement.
EP91401415A 1990-05-31 1991-05-30 Mixing dispenser Expired - Lifetime EP0461010B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9006809 1990-05-31
FR9006809A FR2662672B1 (en) 1990-05-31 1990-05-31 MIXTURE DISPENSER.

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EP0461010A1 true EP0461010A1 (en) 1991-12-11
EP0461010B1 EP0461010B1 (en) 1994-09-28

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JP (1) JPH06100049A (en)
AT (1) ATE112228T1 (en)
CA (1) CA2043386A1 (en)
DE (1) DE69104271T2 (en)
FR (1) FR2662672B1 (en)

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ATE112228T1 (en) 1994-10-15
EP0461010B1 (en) 1994-09-28
US5169029A (en) 1992-12-08
JPH06100049A (en) 1994-04-12
DE69104271T2 (en) 1995-04-27
CA2043386A1 (en) 1991-12-01
FR2662672A1 (en) 1991-12-06
DE69104271D1 (en) 1994-11-03
FR2662672B1 (en) 1992-08-21

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