EP1549566A1 - Dispenser for liquid or pasty product - Google Patents

Dispenser for liquid or pasty product

Info

Publication number
EP1549566A1
EP1549566A1 EP03795043A EP03795043A EP1549566A1 EP 1549566 A1 EP1549566 A1 EP 1549566A1 EP 03795043 A EP03795043 A EP 03795043A EP 03795043 A EP03795043 A EP 03795043A EP 1549566 A1 EP1549566 A1 EP 1549566A1
Authority
EP
European Patent Office
Prior art keywords
wheel
piston
needle
chamber
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03795043A
Other languages
German (de)
French (fr)
Other versions
EP1549566B1 (en
Inventor
Jean-Louis Bougamont
Astrid Henquenet
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.)
Silgan Dispensing Systems Le Treport SAS
Original Assignee
Rexam Dispensing Systems SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=31897392&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1549566(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rexam Dispensing Systems SAS filed Critical Rexam Dispensing Systems SAS
Publication of EP1549566A1 publication Critical patent/EP1549566A1/en
Application granted granted Critical
Publication of EP1549566B1 publication Critical patent/EP1549566B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/20—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
    • B65D47/2018—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure
    • B65D47/2056—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type
    • B65D47/2062—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem
    • B65D47/2068—Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge comprising a valve or like element which is opened or closed by deformation of the container or closure lift valve type in which the deformation raises or lowers the valve stem in which the stem is lowered by the pressure of the contents and thereby opening the valve
    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0011—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container moved by a screw-shaft
    • 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
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • B65D83/0027—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container piston co-operating with a screw-thread in the side wall of the container

Definitions

  • the invention relates to a dispenser for a liquid or pasty product in which the product is extracted by controlled movement of a piston inside a body, the assembly defining a chamber containing such a product.
  • Distributors are known for thick or pasty liquid products, comprising a generally cylindrical body and a piston capable of moving in the body and forming a movable wall of a chamber containing the product.
  • An extraction mechanism in communication with the chamber, includes a pump designed to aspirate and dispense a predetermined dose on each actuation.
  • the piston is simply follower, its displacement being determined by the quantity of product extracted.
  • the volume of the chamber decreases by adapting to the quantity of product remaining.
  • the pump is located between the chamber and an ejection nozzle or the like, so that the product can dry and / or deteriorate in the ejection conduit and the pump.
  • a known device of this kind comprises a large number of relatively fragile parts, in particular those which constitute the pump, which makes it a packaging of high cost price for a sometimes mediocre reliability.
  • An object of the invention is to provide a liquid product dispenser in which the product distribution is obtained by direct action on the piston, without the need to integrate a pump. More particularly, the invention relates to a liquid or pasty product dispenser comprising a hollow body and a piston mounted with sealed displacement inside thereof and delimiting with said body a chamber for the product to be dispensed, an outlet channel being defined in an end wall of said body, characterized in that it comprises a knob mounted in rotation relative to said body at one end thereof, in that a rotation blocking arrangement is defined between said body and said piston, in that said piston is provided with a hollow skirt internally threaded in that said wheel has an internal cylindrical part engaged in said hollow skirt and in that this cylindrical part is externally threaded and screwed in said hollow skirt.
  • Another object of the invention is to provide a dispenser of the kind defined above, supplemented by means for metering the quantity of product extracted.
  • non-return locking means are defined between the wheel and the body to impose a rotation in one direction of the wheel relative to said body.
  • This arrangement in itself makes it possible to control the stroke of the piston and therefore to carry out a certain metering, proportional to the rotation of the wheel.
  • the distributor defined above is characterized in that, said wheel and / or said body being made of relatively deformable plastic material, said non-return locking means comprise sawtooth ribs , defined on two generally cylindrical parts opposite said body and said wheel and nested one inside the other.
  • the user can easily control the progress of the piston, step by step.
  • the actuation of the non-return locking means constituting a ratchet progression system can be made relatively audible. This allows the user to count the number of steps to control the amount of product dispensed.
  • the liquid or pasty product dispenser has the general shape of a stick having an orifice arranged on the face of the end wall thereof.
  • the product is distributed through this orifice.
  • the latter is preferably located in the center of said end wall so that the dose of product dispensed accumulates thereon.
  • the product can be removed from the finger, for example for application, if it is a cosmetic product.
  • the distributor may have an applicator at its end, the shape and structure of which are adapted to the use for which the product is intended.
  • the dispenser is characterized in that a needle is mounted sliding in leaktight manner through said piston and in alignment with the internal orifice of said outlet channel, in that it is urged elastically towards said output channel and in that the end of said needle is shaped and dimensioned to engage in said outlet channel and close it
  • This needle therefore effectively isolates the chamber when the dispenser is not in use, which improves the conservation of the product.
  • the outlet channel consists of an axial rectilinear hole passing through said end wall and the needle has a shaped and dimensioned end for closing said hole, substantially up to the external face of the wall. end of said body. A seal is thus obtained at any end and no residue of dried product is likely to form downstream of the needle in the outlet channel since the volume thereof, reduced to a minimum, is occupied by the needle itself .
  • the needle has a reduction in section in said chamber.
  • the needle is withdrawn automatically under the effect of an increase in pressure in the chamber, that is to say when the wheel is actuated.
  • the needle can be biased in the closed position by a spring installed in said hollow skirt between a shoulder of the needle and the wheel. In this way, the needle retracts and releases the outlet channel as soon as the pressure in the chamber becomes sufficient to generate on said needle, a force greater than that which is developed by the spring.
  • the distributor is designed to be filled by the distribution channel, when the chamber is at its maximum volume, that is to say with the piston as far as possible from the wall. end of the body.
  • the arrangement of the needle advantageously lends itself to the evacuation of air during filling of the dispenser.
  • a closable air evacuation channel is defined in said needle.
  • This evacuation channel has an axial section opening out at the rear of the needle, while a plug is engaged from the rear in this axial section. The plug is released from the rear of the needle during filling to allow the evacuation of air, it is permanently inserted at the end of the filling phase.
  • the invention also relates to a method of filling a distributor in accordance with the above description and characterized in that it consists, said chamber being at its maximum volume, of maintaining said air discharge channel in communication with the atmosphere, filling said product chamber by injecting said product under pressure through said outlet channel and plugging the air evacuation channel when said chamber is filled with product.
  • FIG. 1 is an elevational view, along a section I- I of Figure 2, of a dispenser according to the invention;
  • - Figure 2 is a section II-II of Figure 1;
  • Figure 3 is a view similar to Figure 1 showing the device during the distribution of a dose of product
  • the liquid or pasty product dispenser 11, as shown comprises a hollow body 14, generally cylindrical, comprising an open end 15 and an end wall 17, opposite, provided with an outlet channel 18 constituted by a axial rectilinear hole passing through this wall 17.
  • a piston 20 is mounted with sealed movement inside the body.
  • any mention of an axial direction or of an axis refers to the general axis of symmetry YY ′ of the distributor, confused with that of the piston and of the channel 18.
  • the piston and the body define between them a variable volume chamber 21 containing the product 22 to be dispensed.
  • the dispenser further comprises a wheel 24 rotatably mounted relative to the body on the side of the open end 15 thereof.
  • the distributor body has two longitudinally adjacent parts of different diameters.
  • this difference in diameter is obtained by a reduction in the wall thickness of said body on a section 25 of the latter starting from the open end.
  • the wheel 24 which here has a generally cylindrical shape is mounted in the thinned part of the body of the dispenser, in so that its outer side wall 26 is located generally in the extension of the outer side wall 27 of the rest of the body 14.
  • the piston 20 is provided with a hollow skirt 30 internally threaded (thread 31).
  • the wheel has an internal cylindrical part 32 engaged in the hollow skirt 30 of the piston.
  • the internal cylindrical part of the wheel is externally threaded (thread 33) and is screwed into the hollow skirt.
  • the thumbwheel 24 and the body are immobilized in axial translation relative to each other, by a ring-groove assembly.
  • the rod 34 is defined on the internal face of an outer skirt constituting the wheel, while the groove 35 is defined on a cylindrical part of the body, in the vicinity of the open end 15 of the latter.
  • a rotation blocking arrangement 38 is defined between said body and said piston.
  • the rotation blocking arrangement comprises at least one and preferably several ribs 40 extending parallel to the longitudinal axis of the device and defined on the internal face of said body 14.
  • the piston 20 is made of a relatively flexible plastic material so that the ribs 40 imprint their imprints thereon to prevent rotation of the piston relative to said body.
  • the end of the piston 20 located on the side of the chamber 21 is shaped with a peripheral sealing lip 42 in leaktight and "scraping" contact with the internal cylindrical wall of the body.
  • the ribs 40 are formed in an internal portion of enlarged diameter of the body, adjoining the smooth-walled part which defines the chamber 21, so that said ribs cannot come into contact with the sealing lip defined at the periphery of the face. active piston, when mounting the piston.
  • the skirt 30 of the piston itself comprises a portion 42 of smaller section extending over a distance at least equal to the stroke of the piston, between the lip 42 and a portion 44 of large section cooperating with the ribs 40.
  • the dispenser makes it possible to dose at least approximately the quantity of product withdrawn for each use, in particular if care is taken to write graduations along two neighboring circular lines carried respectively by the body and the wheel. Indeed, it is clear that the quantity of product expelled directly depends on the angle by which the wheel is rotated relative to the body.
  • non-return blocking means 46 are defined between the wheel 24 and the body 14, to impose a rotation in one direction, of the wheel relative to said body.
  • said non-return locking means 46 consist of notching ribs, with sawtooth profile 48,49 opposite, face to face, defined respectively on two generally cylindrical parts opposite the body. and the wheel. As is clearly visible in Figure 2, these ribs are nested one inside the other. Each rib has a face extending substantially radially. These radial faces belonging respectively to the external surface of the body and to the internal surface of the dial come into abutment two by two and prevent any rotation in one direction.
  • the central part of the active face 50 of the piston 20 is hollowed out and shaped with an inner lip 52 in sealed contact with the cylindrical side wall of a needle 54 mounted axially in the distributor, in alignment with the orifice. internal of the outlet channel 18.
  • the needle is urged elastically towards the outlet channel. Its end is shaped and dimensioned to engage in said outlet channel.
  • the outlet channel 18 boils down to a short straight axial hole passing through the end wall of the body, said needle comprises an end portion 56 shaped and dimensioned to close said hole substantially up to the external face 57 of the end wall of the body.
  • the end portion 56 is cylindrical.
  • the needle has a reduction in section in the chamber, that is to say a reduction in diameter between the cylindrical part against which the piston slides and that 56 which closes the outlet channel.
  • a spring 60 is installed in precompression in the hollow skirt of the piston between a shoulder of the needle and the wheel 24. The end of the needle opposite to that which controls the outlet channel engages and slides in a central hole 62 from the bottom 63 of the wheel which closes the open end 15 of the body.
  • This quantity is more or less important according to the rotation of the wheel which can be controlled by counting the number of "notches”. The user can then take the product emerging from the outside of the end face of the body with his finger. At the end of the rotation, the pressure in the chamber decreases and the needle 54 resumes its place under the action of the spring 60.
  • the body 14 and the wheel 24 are advantageously two generally cylindrical elements and arranged in the extension of one another so as to form a generally cylindrical unit.
  • the distributor as described can constitute a standardized functional entity, constituting a sort of "engine” capable of receiving a covering whose shape is representative of the product. offers.
  • this covering may consist of two parts, one essentially covering the body and the other the wheel, these two parts having a configuration which is not necessarily cylindrical. You can choose a skin with facets parallel to the axis of rotation and defining, in section, a polygonal outline.
  • Such a shape allows in itself a visual dosage (even in the absence of notching ribs between the body and the wheel) by the simple fact that a rotation between two positions where the lateral faces of the body and the wheel come into the extension of each other is in itself an indication of dosage.
  • the needle 54 advantageously lends itself to the evacuation of air when the chamber is filled.
  • the dispenser must be filled by positioning the piston so that the chamber 21 has its maximum volume, as shown in Figure 1 because the injection pressure of the product would be insufficient to push the piston, given its mode of coupling by thread using the thumbwheel. It is therefore necessary to be able to evacuate the air during filling.
  • an air evacuation channel 65 closable by a plug 66, is defined in the needle to allow the filling of the chamber.
  • This air evacuation channel has an axial section 68 connected to the chamber by radial bores 69 and opening axially behind the needle. The plug 66 is engaged from the rear in this axial section.
  • the plug 66 has a massive end portion 70 extended by fins 71 engaged in the axial section.
  • the plug can be partially engaged in the axial section and remain in a chosen position thanks to the friction forces developed in particular between the fins 71 and the internal wall of this axial section.
  • the plug In the position illustrated in Figure 4, that is to say before and during filling, the plug is half engaged in the axial section so that air can escape freely between the chamber and the outside.
  • the needle 56 can be maneuvered if necessary, by means of the half-engaged plug because the friction developed between the fins and the needle are greater than the force exerted by the spring.
  • the plug is pushed in as far as possible in the axial section (FIG.
  • FIG 4 illustrates the filling process.
  • the distributor empty, with the plug half engaged, is positioned "upside down" in one of the cavities of a bezel 76 whose bottom is provided with a tubular filling nozzle 77 fitted with a gasket sealing 78 coming to bear around the orifice of the outlet channel 18.
  • the product is injected under pressure through the filling spout and therefore enters the chamber through the outlet channel.
  • the filling takes place when the cavity of the bezel in which the empty dispenser is located arrives opposite an upper stop 80 immobilizing the dispenser in the bezel, which makes it possible to seal the filling spout around the outlet channel.
  • the upper stop can be fitted with a traction fork 81 shaped to grip the plug by the solid part 70 thereof, which includes a flange.
  • This fork is linked to a cylinder not shown so that the needle can be positively retracted at the time of filling. It should be noted that this arrangement is not necessarily necessary if the injection pressure of the product is sufficient to cause the needle to be raised.
  • the chamber being at its maximum volume, the air evacuation channel is maintained in communication with the atmosphere and the chamber is filled with product by injecting said product under pressure by the outlet channel, as illustrated in FIG. 4. The filling process is completed by pushing the plug back as far as possible when the distributor 11 is released from the stop 80.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Basic Packing Technique (AREA)
  • Coating Apparatus (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The dispenser comprises a hollow body (14) in which a piston (20) can move and delimit a chamber for the product. An outlet channel (18) is defined in an end wall of the body. The piston has a hollow internally threaded skirt (30) and a knurled wheel (24) with an internal threaded cylindrical part is screwed into the skirt. The piston is rotationally locked in the body so that activating the knurled wheel causes the axial displacement of the piston and controlled dispensing of the product. An Independent claim is included for a method of filling the dispenser.

Description

Distributeur de produit liquide ou pâteuxLiquid or pasty product dispenser
L'invention concerne un distributeur de produit liquide ou pâteux dans lequel le produit est extrait par déplacement contrôlé d'un piston à l'intérieur d'un corps, l'ensemble définissant une chambre contenant un tel produit.The invention relates to a dispenser for a liquid or pasty product in which the product is extracted by controlled movement of a piston inside a body, the assembly defining a chamber containing such a product.
On connaît des distributeurs pour des produits liquides épais ou pâteux, comprenant un corps globalement cylindrique et un piston susceptible de se déplacer dans le corps et formant une paroi mobile d'une chambre renfermant le produit. Un mécanisme d'extraction, en communication avec la chambre, comporte une pompe conçue pour aspirer et distribuer une dose prédéterminée à chaque actionnement. Le piston est simplement suiveur, son déplacement étant déterminé par la quantité de produit extrait Le volume de la chambre diminue en s'adaptant à la quantité de produit restant. Dans un tel dispositif, la pompe est située entre la chambre et un bec d'éjection ou analogue, de sorte que du produit peut sécher et/ou s'altérer dans le conduit d'éjection et la pompe. En outre, un dispositif connu de ce genre comporte un grand nombre de pièces relativement fragiles, notamment celles qui constituent la pompe, ce qui en fait un conditionnement de prix de revient élevé pour une fiabilité parfois médiocre.Distributors are known for thick or pasty liquid products, comprising a generally cylindrical body and a piston capable of moving in the body and forming a movable wall of a chamber containing the product. An extraction mechanism, in communication with the chamber, includes a pump designed to aspirate and dispense a predetermined dose on each actuation. The piston is simply follower, its displacement being determined by the quantity of product extracted. The volume of the chamber decreases by adapting to the quantity of product remaining. In such a device, the pump is located between the chamber and an ejection nozzle or the like, so that the product can dry and / or deteriorate in the ejection conduit and the pump. In addition, a known device of this kind comprises a large number of relatively fragile parts, in particular those which constitute the pump, which makes it a packaging of high cost price for a sometimes mediocre reliability.
L'invention permet de surmonter ces inconvénients. Un objet de l'invention est de proposer un distributeur de produit liquide dans lequel la distribution du produit s'obtient par action directe sur le piston, sans qu'il soit nécessaire d'y intégrer une pompe. Plus particulièrement, l'invention concerne un distributeur de produit liquide ou pâteux comprenant un corps creux et un piston monté à déplacement étanche à l'intérieur de celui-ci et délimitant avec ledit corps une chambre pour le produit à distribuer, un canal de sortie étant défini dans une paroi d'extrémité dudit corps, caractérisé en ce qu'il comporte une molette montée en rotation par rapport audit corps à une extrémité de celui-ci, en ce qu'un agencement de blocage en rotation est défini entre ledit corps et ledit piston, en ce que ledit piston est pourvu d'une jupe creuse filetée intérieurement en ce que ladite molette comporte une partie cylindrique interne engagée dans ladite jupe creuse et en ce que cette partie cylindrique est filetée extérieurement et vissée dans ladite jupe creuse. Un autre objet de l'invention est de proposer un distributeur du genre défini ci-dessus, complété par des moyens de dosage de la quantité de produit extrait.The invention overcomes these drawbacks. An object of the invention is to provide a liquid product dispenser in which the product distribution is obtained by direct action on the piston, without the need to integrate a pump. More particularly, the invention relates to a liquid or pasty product dispenser comprising a hollow body and a piston mounted with sealed displacement inside thereof and delimiting with said body a chamber for the product to be dispensed, an outlet channel being defined in an end wall of said body, characterized in that it comprises a knob mounted in rotation relative to said body at one end thereof, in that a rotation blocking arrangement is defined between said body and said piston, in that said piston is provided with a hollow skirt internally threaded in that said wheel has an internal cylindrical part engaged in said hollow skirt and in that this cylindrical part is externally threaded and screwed in said hollow skirt. Another object of the invention is to provide a dispenser of the kind defined above, supplemented by means for metering the quantity of product extracted.
Selon un mode de réalisation possible, des moyens de blocage anti-retour sont définis entre la molette et le corps pour imposer une rotation en sens unique de la molette par rapport audit corps. Cet agencement permet en soi de contrôler la course du piston et par conséquent, de réaliser un certain dosage, proportionnel à la rotation de la molette. Selon un mode de réalisation plus particulièrement avantageux, le distributeur défini ci-dessus est caractérisé en ce que, ladite molette et/ou ledit corps étant réalisés en matériau plastique relativement déformable, lesdits moyens de blocage anti-retour comportent des nervures en dents de scie, définies sur deux parties globalement cylindriques en regard dudit corps et de ladite molette et imbriquées les unes dans les autres.According to a possible embodiment, non-return locking means are defined between the wheel and the body to impose a rotation in one direction of the wheel relative to said body. This arrangement in itself makes it possible to control the stroke of the piston and therefore to carry out a certain metering, proportional to the rotation of the wheel. According to a more particularly advantageous embodiment, the distributor defined above is characterized in that, said wheel and / or said body being made of relatively deformable plastic material, said non-return locking means comprise sawtooth ribs , defined on two generally cylindrical parts opposite said body and said wheel and nested one inside the other.
De cette façon, l'utilisateur peut facilement contrôler la progression du piston, cran par cran. En choisissant judicieusement les matières plastiques utilisées pour constituer ledit corps et ladite molette, on peut rendre relativement audible l'actionnement des moyens de blocage anti-retour constituant un système de progression à cliquet. Ceci permet à l'utilisateur de compter le nombre de pas pour contrôler la quantité de produit distribué.In this way, the user can easily control the progress of the piston, step by step. By judiciously choosing the plastics used to constitute said body and said wheel, the actuation of the non-return locking means constituting a ratchet progression system can be made relatively audible. This allows the user to count the number of steps to control the amount of product dispensed.
Dans un mode de réalisation simple, le distributeur de produit liquide ou pâteux a la forme générale d'un bâtonnet comportant un orifice aménagé sur la face de la paroi d'extrémité de celui-ci. Le produit est distribué par cet orifice. Ce dernier se trouve de préférence au centre de ladite paroi d'extrémité en sorte que la dose de produit distribué s'accumule sur celle-ci. Le produit peut être prélevé du doigt, par exemple pour application, s'il s'agit d'un produit cosmétique. Dans d'autres cas, le distributeur peut posséder à son extrémité un applicateur dont la forme et la structure sont adaptées à l'usage auquel est destiné le produit.In a simple embodiment, the liquid or pasty product dispenser has the general shape of a stick having an orifice arranged on the face of the end wall thereof. The product is distributed through this orifice. The latter is preferably located in the center of said end wall so that the dose of product dispensed accumulates thereon. The product can be removed from the finger, for example for application, if it is a cosmetic product. In other cases, the distributor may have an applicator at its end, the shape and structure of which are adapted to the use for which the product is intended.
Selon une autre caractéristique avantageuse, le distributeur est caractérisé en ce qu'un pointeau est monté coulissant de façon étanche au travers dudit piston et dans l'alignement de l'orifice interne dudit canal de sortie, en ce qu'il est sollicité élastiquement vers ledit canal de sortie et en ce que l'extrémité dudit pointeau est conformée et dimensionnée pour s'engager dans ledit canal de sortie et l'obturerAccording to another advantageous characteristic, the dispenser is characterized in that a needle is mounted sliding in leaktight manner through said piston and in alignment with the internal orifice of said outlet channel, in that it is urged elastically towards said output channel and in that the end of said needle is shaped and dimensioned to engage in said outlet channel and close it
Ce pointeau permet donc d'isoler efficacement la chambre lorsque le distributeur n'est pas utilisé, ce qui améliore la conservation du produit.This needle therefore effectively isolates the chamber when the dispenser is not in use, which improves the conservation of the product.
Dans un mode de réalisation avantageux, le canal de sortie est constitué par un trou rectiligne axial traversant ladite paroi d'extrémité et le pointeau comporte une extrémité conformée et dimensionnée pour obturer ledit trou, sensiblement jusqu'à la face externe de la paroi d'extrémité dudit corps. On obtient ainsi une étanchéité de toute extrémité et aucun résidu de produit séché n'est susceptible de se former en aval du pointeau dans le canal de sortie puisque le volume de celui-ci, réduit au minimum, est occupé par le pointeau lui-même.In an advantageous embodiment, the outlet channel consists of an axial rectilinear hole passing through said end wall and the needle has a shaped and dimensioned end for closing said hole, substantially up to the external face of the wall. end of said body. A seal is thus obtained at any end and no residue of dried product is likely to form downstream of the needle in the outlet channel since the volume thereof, reduced to a minimum, is occupied by the needle itself .
Selon une autre caractéristique avantageuse, le pointeau présente une réduction de section dans ladite chambre. Par ce moyen simple, le retrait du pointeau s'obtient automatiquement sous l'effet d'une augmentation de pression dans la chambre, c'est à dire lorsqu'on actionne la molette. Par exemple, le pointeau peut être sollicité en position de fermeture par un ressort installé dans ladite jupe creuse entre un épaulement du pointeau et la molette. De cette façon, le pointeau se rétracte et libère le canal de sortie dès que la pression dans la chambre devient suffisante pour engendrer sur ledit pointeau, une force supérieure à celle qui est développée par le ressort.According to another advantageous characteristic, the needle has a reduction in section in said chamber. By this simple means, the needle is withdrawn automatically under the effect of an increase in pressure in the chamber, that is to say when the wheel is actuated. For example, the needle can be biased in the closed position by a spring installed in said hollow skirt between a shoulder of the needle and the wheel. In this way, the needle retracts and releases the outlet channel as soon as the pressure in the chamber becomes sufficient to generate on said needle, a force greater than that which is developed by the spring.
Par ailleurs, le couplage entre la molette et le piston étant irréversible, le distributeur est prévu pour être rempli par le canal de distribution, lorsque la chambre est à son volume maximum, c'est à dire avec le piston éloigné au maximum de la paroi d'extrémité du corps. L'agencement du pointeau se prête avantageusement à l'évacuation de l'air pendant le remplissage du distributeur.Furthermore, the coupling between the wheel and the piston being irreversible, the distributor is designed to be filled by the distribution channel, when the chamber is at its maximum volume, that is to say with the piston as far as possible from the wall. end of the body. The arrangement of the needle advantageously lends itself to the evacuation of air during filling of the dispenser.
Pour ce faire, un canal d'évacuation d'air, obturable, est défini dans ledit pointeau. Ce canal d'évacuation comporte un tronçon axial débouchant à l'arrière du pointeau, tandis qu'un bouchon est engagé par l'arrière dans ce tronçon axial. Le bouchon est dégagé de l'arrière du pointeau pendant le remplissage pour permettre l'évacuation de l'air, il est enfoncé définitivement à la fin de la phase de remplissage. L'invention concerne aussi un procédé de remplissage d'un distributeur conforme à la description qui précède et caractérisé en ce qu'il consiste, ladite chambre étant à son volume maximum, à maintenir ledit canal d'évacuation d'air en communication avec l'atmosphère, à remplir ladite chambre de produit en injectant ledit produit sous pression par ledit canal de sortie et à reboucher le canal d'évacuation d'air lorsque ladite chambre est remplie de produit.To do this, a closable air evacuation channel is defined in said needle. This evacuation channel has an axial section opening out at the rear of the needle, while a plug is engaged from the rear in this axial section. The plug is released from the rear of the needle during filling to allow the evacuation of air, it is permanently inserted at the end of the filling phase. The invention also relates to a method of filling a distributor in accordance with the above description and characterized in that it consists, said chamber being at its maximum volume, of maintaining said air discharge channel in communication with the atmosphere, filling said product chamber by injecting said product under pressure through said outlet channel and plugging the air evacuation channel when said chamber is filled with product.
L'invention sera mieux comprise et d'autres avantages de celle- ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un distributeur de produit liquide ou pâteux conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of a liquid or pasty product dispenser conforming to its principle, given solely by way of example and made with reference to the accompanying drawings in which:
- la figure 1 est une vue en élévation, suivant une coupe I- I de la figure 2, d'un distributeur conforme à l'invention ; - la figure 2 est une coupe II-II de la figure 1 ;- Figure 1 is an elevational view, along a section I- I of Figure 2, of a dispenser according to the invention; - Figure 2 is a section II-II of Figure 1;
- la figure 3 est une vue analogue à la figure 1 montrant le dispositif pendant la distribution d'une dose de produit ;- Figure 3 is a view similar to Figure 1 showing the device during the distribution of a dose of product;
- la figure 4 illustre le remplissage du dispositif.- Figure 4 illustrates the filling of the device.
Le distributeur de produit liquide ou pâteux 11, tel que représenté comprend un corps creux 14, globalement cylindrique, comportant une extrémité ouverte 15 et une paroi d'extrémité 17, à l'opposé, munie d'un canal de sortie 18 constitué par un trou rectiligne axial traversant cette paroi 17. Un piston 20 est monté à déplacement étanche à l'intérieur du corps. Dans la suite de la description, toute mention d'une direction axiale ou d'un axe fait référence à l'axe général de symétrie YY' du distributeur, confondu avec celui du piston et du canal 18. Le piston et le corps définissent entre eux une chambre à volume variable 21 contenant le produit 22 à distribuer. Le distributeur comporte en outre une molette 24 montée en rotation par rapport au corps du côté de l'extrémité ouverte 15 de celui-ci. Le corps du distributeur comporte deux parties adjacentes longitudinalement de diamètres différents. Dans l'exemple, cette différence de diamètre est obtenue par une diminution d'épaisseur de paroi dudit corps sur un tronçon 25 de celui-ci partant de l'extrémité ouverte. La molette 24 qui a ici une forme globalement cylindrique est montée dans la partie amincie du corps du distributeur, en sorte que sa paroi latérale extérieure 26 se situe globalement dans le prolongement de la paroi latérale extérieure 27 du reste du corps 14. Le piston 20 est pourvu d'une jupe creuse 30 filetée intérieurement, (filetage 31). La molette comporte une partie cylindrique interne 32 engagée dans la jupe creuse 30 du piston. La partie cylindrique interne de la molette est filetée extérieurement (filetage 33) et est vissée dans la jupe creuse. La molette 24 et le corps sont immobilisés en translation axiale l'un par rapport à l'autre, par un ensemble jonc-gorge. Dans l'exemple, le jonc 34 est défini sur la face interne d'une jupe extérieure constituant la molette, tandis que la gorge 35 est définie sur une partie cylindrique du corps, au voisinage de l'extrémité ouverte 15 de celui-ci. En outre, un agencement de blocage en rotation 38 est défini entre ledit corps et ledit piston. Dans l'exemple représenté, l'agencement de blocage en rotation comporte au moins une et de préférence plusieurs nervures 40 s'étendant parallèlement à l'axe longitudinal du dispositif et définies à la face interne dudit corps 14. Par ailleurs, le piston 20 est réalisé dans un matériau plastique relativement souple en sorte que les nervures 40 y impriment leurs empreintes pour empêcher la rotation du piston par rapport audit corps. Il n'est donc pas nécessaire de prévoir, par moulage, des gorges à la surface de la paroi cylindrique extérieure du piston, compte tenu du matériau mou utilisé pour constituer celui-ci ; le montage du piston s'en trouve facilité. L'extrémité du piston 20 située du côté de la chambre 21 est conformé avec une lèvre périphérique d'étanchéité 42 en contact étanche et « raclant » avec la paroi cylindrique intérieure du corps. Les nervures 40 sont pratiquées dans une portion interne de diamètre élargi du corps, jouxtant la partie à paroi lisse qui définit la chambre 21, en sorte que lesdites nervures ne peuvent entrer en contact avec la lèvre d'étanchéité définie à la périphérie de la face active du piston, au moment du montage du piston. La jupe 30 du piston comporte elle-même une portion 42 de moindre section s'étendant sur une distance au moins égale à la course du piston, entre la lèvre 42 et une portion 44 de forte section coopérant avec les nervures 40.The liquid or pasty product dispenser 11, as shown comprises a hollow body 14, generally cylindrical, comprising an open end 15 and an end wall 17, opposite, provided with an outlet channel 18 constituted by a axial rectilinear hole passing through this wall 17. A piston 20 is mounted with sealed movement inside the body. In the following description, any mention of an axial direction or of an axis refers to the general axis of symmetry YY ′ of the distributor, confused with that of the piston and of the channel 18. The piston and the body define between them a variable volume chamber 21 containing the product 22 to be dispensed. The dispenser further comprises a wheel 24 rotatably mounted relative to the body on the side of the open end 15 thereof. The distributor body has two longitudinally adjacent parts of different diameters. In the example, this difference in diameter is obtained by a reduction in the wall thickness of said body on a section 25 of the latter starting from the open end. The wheel 24 which here has a generally cylindrical shape is mounted in the thinned part of the body of the dispenser, in so that its outer side wall 26 is located generally in the extension of the outer side wall 27 of the rest of the body 14. The piston 20 is provided with a hollow skirt 30 internally threaded (thread 31). The wheel has an internal cylindrical part 32 engaged in the hollow skirt 30 of the piston. The internal cylindrical part of the wheel is externally threaded (thread 33) and is screwed into the hollow skirt. The thumbwheel 24 and the body are immobilized in axial translation relative to each other, by a ring-groove assembly. In the example, the rod 34 is defined on the internal face of an outer skirt constituting the wheel, while the groove 35 is defined on a cylindrical part of the body, in the vicinity of the open end 15 of the latter. In addition, a rotation blocking arrangement 38 is defined between said body and said piston. In the example shown, the rotation blocking arrangement comprises at least one and preferably several ribs 40 extending parallel to the longitudinal axis of the device and defined on the internal face of said body 14. Furthermore, the piston 20 is made of a relatively flexible plastic material so that the ribs 40 imprint their imprints thereon to prevent rotation of the piston relative to said body. It is therefore not necessary to provide, by molding, grooves on the surface of the external cylindrical wall of the piston, taking into account the soft material used to constitute it; the mounting of the piston is thereby facilitated. The end of the piston 20 located on the side of the chamber 21 is shaped with a peripheral sealing lip 42 in leaktight and "scraping" contact with the internal cylindrical wall of the body. The ribs 40 are formed in an internal portion of enlarged diameter of the body, adjoining the smooth-walled part which defines the chamber 21, so that said ribs cannot come into contact with the sealing lip defined at the periphery of the face. active piston, when mounting the piston. The skirt 30 of the piston itself comprises a portion 42 of smaller section extending over a distance at least equal to the stroke of the piston, between the lip 42 and a portion 44 of large section cooperating with the ribs 40.
Tel qu'il vient d'être défini jusqu'à présent, le distributeur permet de doser au moins approximativement la quantité de produit prélevé à chaque usage, notamment si on prend soin d'inscrire des graduations le long de deux lignes circulaires voisines portées respectivement par le corps et la molette. En effet, il est clair que la quantité de produit expulsé dépend directement de l'angle dont on fait tourner la molette par rapport au corps.As has just been defined so far, the dispenser makes it possible to dose at least approximately the quantity of product withdrawn for each use, in particular if care is taken to write graduations along two neighboring circular lines carried respectively by the body and the wheel. Indeed, it is clear that the quantity of product expelled directly depends on the angle by which the wheel is rotated relative to the body.
Néanmoins, pour que le dosage soit plus précis, des moyens de blocage anti-retour 46 sont définis entre la molette 24 et le corps 14, pour imposer une rotation en sens unique, de la molette par rapport audit corps.However, for the dosage to be more precise, non-return blocking means 46 are defined between the wheel 24 and the body 14, to impose a rotation in one direction, of the wheel relative to said body.
Dans l'exemple représenté, la molette et le corps sont réalisés en matériaux plastiques relativement déformables. Dans ces conditions, selon un mode de réalisation avantageux, lesdits moyens de blocage antiretour 46 consistent en des nervures de crantage, à profil de dents de scie 48,49 opposées, face à face, définies respectivement sur deux parties globalement cylindriques en regard du corps et de la molette. Comme cela est bien visible sur la figure 2, ces nervures sont imbriquées les unes dans les autres. Chaque nervure comporte une face s'étendant sensiblement radialement. Ces faces radiales appartenant respectivement à la surface externe du corps et à la surface interne de la molette viennent en butée deux à deux et empêchent toute rotation dans un sens. Les autres faces desdites nervures sont presque tangentielles, de sorte que, moyennant une légère déformation radiale de la molette et, éventuellement, d'une partie dudit corps, une rotation dans l'autre sens est possible, avec une progression pas à pas, avantageusement audible. La rotation de la molette par rapport au corps, dans ce sens privilégié, entraîne le déplacement longitudinal du piston, chaque « cran » correspondant à une quantité prédéterminée de produit délivré.In the example shown, the wheel and the body are made of relatively deformable plastic materials. Under these conditions, according to an advantageous embodiment, said non-return locking means 46 consist of notching ribs, with sawtooth profile 48,49 opposite, face to face, defined respectively on two generally cylindrical parts opposite the body. and the wheel. As is clearly visible in Figure 2, these ribs are nested one inside the other. Each rib has a face extending substantially radially. These radial faces belonging respectively to the external surface of the body and to the internal surface of the dial come into abutment two by two and prevent any rotation in one direction. The other faces of said ribs are almost tangential, so that, by means of a slight radial deformation of the wheel and, optionally, of a part of said body, rotation in the other direction is possible, with step-by-step progression, advantageously audible. The rotation of the wheel relative to the body, in this preferred direction, causes the longitudinal displacement of the piston, each "notch" corresponding to a predetermined quantity of product delivered.
En outre, la partie centrale de la face active 50 du piston 20 est évidée et conformée avec une lèvre intérieure 52 en contact étanche avec la paroi latérale cylindrique d'un pointeau 54 monté axialement dans le distributeur, dans l'alignement de l'orifice interne du canal de sortie 18. Le pointeau est sollicité elastiquement vers le canal de sortie. Son extrémité est conformée et dimensionnée pour s'engager dans ledit canal de sortie. Dans l'exemple, le canal de sortie 18 se résume à un trou rectiligne axial de faible longueur traversant la paroi d'extrémité du corps, ledit pointeau comporte une portion d'extrémité 56 conformée et dimensionnée pour obturer ledit trou sensiblement jusqu'à la face externe 57 de la paroi d'extrémité du corps. Dans l'exemple, la portion d'extrémité 56 est cylindrique. On obtient ainsi une fermeture complète du distributeur dite « de toute extrémité » empêchant tout séchage de produit résiduel. De plus, le pointeau présente une réduction de section dans la chambre, c'est à dire une diminution de diamètre entre la partie cylindrique contre laquelle coulisse le piston et celle 56 qui ferme le canal de sortie. De cette façon, une augmentation de pression dans la chambre 21 se traduit par une force axiale sur le pointeau 54 tendant à l'éloigner de la paroi d'extrémité du corps. Par ailleurs, un ressort 60 est installé en précompression dans la jupe creuse du piston entre un épaulement du pointeau et la molette 24. L'extrémité du pointeau opposée à celle qui commande le canal de sortie s'engage et coulisse dans un trou central 62 du fond 63 de la molette qui obture l'extrémité ouverte 15 du corps.In addition, the central part of the active face 50 of the piston 20 is hollowed out and shaped with an inner lip 52 in sealed contact with the cylindrical side wall of a needle 54 mounted axially in the distributor, in alignment with the orifice. internal of the outlet channel 18. The needle is urged elastically towards the outlet channel. Its end is shaped and dimensioned to engage in said outlet channel. In the example, the outlet channel 18 boils down to a short straight axial hole passing through the end wall of the body, said needle comprises an end portion 56 shaped and dimensioned to close said hole substantially up to the external face 57 of the end wall of the body. In the example, the end portion 56 is cylindrical. There is thus obtained a complete closure of the so-called “from any end” dispenser preventing any drying of residual product. In addition, the needle has a reduction in section in the chamber, that is to say a reduction in diameter between the cylindrical part against which the piston slides and that 56 which closes the outlet channel. In this way, an increase in pressure in the chamber 21 results in an axial force on the needle 54 tending to move it away from the end wall of the body. Furthermore, a spring 60 is installed in precompression in the hollow skirt of the piston between a shoulder of the needle and the wheel 24. The end of the needle opposite to that which controls the outlet channel engages and slides in a central hole 62 from the bottom 63 of the wheel which closes the open end 15 of the body.
Le fonctionnement du dispositif tel que décrit jusqu'à présent est des plus simples. Lorsque l'utilisateur désire extraire une certaine quantité de produit, il lui suffit de tourner la molette 24 par rapport au corps 14 dans le seul sens autorisé. Le piston étant immobilisé en rotation dans le corps, et la molette étant liée au piston par filetage, il en résulte un déplacement axial du piston strictement proportionnel à l'angle de rotation de la molette. Si on suppose que la chambre est entièrement remplie de produit, sans inclusion d'air, l'actionnement du piston engendre immédiatement une augmentation de pression dans ladite chambre 21 qui se traduit, compte tenu de la forme du pointeau, par un retrait axial de celui-ci, libérant le conduit de sortie 18. Par conséquent, une dose prédéterminée de produit (figure 3) s'accumule sur la face extérieure 57 de la paroi du corps. Cette quantité est plus ou moins importante selon la rotation de la molette qui peut être contrôlée en comptant le nombre de « crans ». L'utilisateur peut alors prélever du doigt le produit émergeant à l'extérieur de la face d'extrémité du corps. A la fin de la rotation, la pression dans la chambre diminue et le pointeau 54 reprend sa place sous l'action du ressort 60.The operation of the device as described so far is very simple. When the user wishes to extract a certain quantity of product, it suffices for him to turn the dial 24 relative to the body 14 in the only authorized direction. The piston being immobilized in rotation in the body, and the wheel being linked to the piston by threading, this results in an axial displacement of the piston strictly proportional to the angle of rotation of the wheel. If it is assumed that the chamber is completely filled with product, without inclusion of air, the actuation of the piston immediately generates an increase in pressure in said chamber 21 which results, taking into account the shape of the needle, by an axial withdrawal of the latter, releasing the outlet conduit 18. Consequently, a predetermined dose of product (FIG. 3) accumulates on the external face 57 of the wall of the body. This quantity is more or less important according to the rotation of the wheel which can be controlled by counting the number of "notches". The user can then take the product emerging from the outside of the end face of the body with his finger. At the end of the rotation, the pressure in the chamber decreases and the needle 54 resumes its place under the action of the spring 60.
Comme représenté sur le dessin, le corps 14 et la molette 24 sont avantageusement deux éléments globalement cylindriques et agencés dans le prolongement l'un de l'autre de façon à former une unité globalement cylindrique. Le distributeur tel que décrit peut constituer une entité fonctionnelle standardisée, constituant une sorte de « moteur » apte à recevoir un habillage dont la forme est représentative du produit proposé. Par exemple, cet habillage peut être constitué de deux parties, l'une recouvrant essentiellement le corps et l'autre la molette, ces deux parties ayant une configuration non obligatoirement cylindrique. On pourra choisir un habillage présentant des facettes parallèles à l'axe de rotation et définissant, en section, un contour polygonal. Une telle forme permet en soi un dosage visuel (même en l'absence de nervures de crantage entre le corps et la molette) par le simple fait qu'une rotation entre deux positions où les faces latérales du corps et de la molette viennent dans le prolongement l'une de l'autre est en soi une indication de dosage. Dans ce contexte, il est aussi possible de prévoir un encliquetage unidirectionnel inverse entre la molette et son propre habillage pour permettre un retour en arrière et un alignement des faces latérales après utilisation, sans entraîner, bien entendu, un quelconque retrait du piston.As shown in the drawing, the body 14 and the wheel 24 are advantageously two generally cylindrical elements and arranged in the extension of one another so as to form a generally cylindrical unit. The distributor as described can constitute a standardized functional entity, constituting a sort of "engine" capable of receiving a covering whose shape is representative of the product. offers. For example, this covering may consist of two parts, one essentially covering the body and the other the wheel, these two parts having a configuration which is not necessarily cylindrical. You can choose a skin with facets parallel to the axis of rotation and defining, in section, a polygonal outline. Such a shape allows in itself a visual dosage (even in the absence of notching ribs between the body and the wheel) by the simple fact that a rotation between two positions where the lateral faces of the body and the wheel come into the extension of each other is in itself an indication of dosage. In this context, it is also possible to provide a reverse unidirectional latching between the wheel and its own covering to allow a backward movement and an alignment of the lateral faces after use, without, of course, causing any withdrawal of the piston.
Revenant sur la structure du distributeur 11 en tant que tel, il est à noter que le pointeau 54 se prête avantageusement à l'évacuation de l'air au moment du remplissage de la chambre. En effet, le distributeur doit être rempli en positionnant le piston de façon que la chambre 21 ait son volume maximum, comme représenté sur la figure 1 car la pression d'injection du produit serait insuffisante pour repousser le piston, compte tenu de son mode de couplage par filetage à la molette. Il faut donc pouvoir évacuer l'air pendant le remplissage. C'est pourquoi, un canal d'évacuation d'air 65, obturable par un bouchon 66, est défini dans le pointeau pour permettre le remplissage de la chambre. Ce canal d'évacuation d'air comporte un tronçon axial 68 relié à la chambre par des perçages radiaux 69 et débouchant axialement à l'arrière du pointeau. Le bouchon 66 est engagé par l'arrière dans ce tronçon axial. Le bouchon 66 comporte une partie d'extrémité massive 70 prolongée par des ailettes 71 engagées dans le tronçon axial. De cette façon, le bouchon peut être engagé partiellement dans le tronçon axial et demeurer dans une position choisie grâce aux forces de frottement développées notamment entre les ailettes 71 et la paroi interne de ce tronçon axial. Dans la position illustrée à la figure 4, c'est à dire avant et pendant le remplissage, le bouchon est à demi engagé dans le tronçon axial en sorte que l'air peut s'échapper librement entre la chambre et l'extérieur. Eventuellement, on peut manœuvrer le pointeau 56 si nécessaire, par l'intermédiaire du bouchon à demi engagé car les frottements développés entre les ailettes et le pointeau sont supérieurs à la force exercée par le ressort. En revanche, lorsque la chambre est complètement remplie de produit, le bouchon est enfoncé au maximum dans le tronçon axial (figure 3) et le canal d'évacuation d'air est définitivement obturé. La figure 4 illustre le procédé de remplissage. Le distributeur, vide, avec le bouchon à demi engagé, est positionné « tête en bas » dans l'une des cavités d'un drageoir 76 dont le fond est muni d'un bec de remplissage 77 tubulaire équipé d'un joint d'étanchéité 78 venant prendre appui autour de l'orifice du canal de sortie 18. Le produit est injecté sous pression par le bec de remplissage et pénètre donc dans la chambre par le canal de sortie. Le remplissage s'effectue lorsque la cavité du drageoir dans laquelle se situe le distributeur vide arrive en regard d'une butée supérieure 80 immobilisant le distributeur dans le drageoir, ce qui permet de plaquer en étanchéité le bec de remplissage autour du canal de sortie. Eventuellement, la butée supérieure peut être équipée d'une fourchette de traction 81 conformée pour venir saisir le bouchon par la partie massive 70 de celui-ci, lequel comporte une collerette. Cette fourchette est liée à un vérin non représenté de sorte que le pointeau peut être positivement rétracté au moment du remplissage. Il est à noter que cet agencement n'est pas forcément nécessaire si la pression d'injection du produit est suffisante pour provoquer le soulèvement du pointeau. Quoi qu'il en soit, au moment du remplissage, la chambre étant à son volume maximum, on maintient le canal d'évacuation d'air en communication avec l'atmosphère et on remplit la chambre de produit en injectant ledit produit sous pression par le canal de sortie, comme illustré sur la figure 4. Le procédé de remplissage s'achève en repoussant le bouchon au maximum lorsque le distributeur 11 est dégagé de la butée 80. Returning to the structure of the distributor 11 as such, it should be noted that the needle 54 advantageously lends itself to the evacuation of air when the chamber is filled. Indeed, the dispenser must be filled by positioning the piston so that the chamber 21 has its maximum volume, as shown in Figure 1 because the injection pressure of the product would be insufficient to push the piston, given its mode of coupling by thread using the thumbwheel. It is therefore necessary to be able to evacuate the air during filling. This is why, an air evacuation channel 65, closable by a plug 66, is defined in the needle to allow the filling of the chamber. This air evacuation channel has an axial section 68 connected to the chamber by radial bores 69 and opening axially behind the needle. The plug 66 is engaged from the rear in this axial section. The plug 66 has a massive end portion 70 extended by fins 71 engaged in the axial section. In this way, the plug can be partially engaged in the axial section and remain in a chosen position thanks to the friction forces developed in particular between the fins 71 and the internal wall of this axial section. In the position illustrated in Figure 4, that is to say before and during filling, the plug is half engaged in the axial section so that air can escape freely between the chamber and the outside. Optionally, the needle 56 can be maneuvered if necessary, by means of the half-engaged plug because the friction developed between the fins and the needle are greater than the force exerted by the spring. On the other hand, when the chamber is completely filled with product, the plug is pushed in as far as possible in the axial section (FIG. 3) and the air evacuation channel is permanently closed. Figure 4 illustrates the filling process. The distributor, empty, with the plug half engaged, is positioned "upside down" in one of the cavities of a bezel 76 whose bottom is provided with a tubular filling nozzle 77 fitted with a gasket sealing 78 coming to bear around the orifice of the outlet channel 18. The product is injected under pressure through the filling spout and therefore enters the chamber through the outlet channel. The filling takes place when the cavity of the bezel in which the empty dispenser is located arrives opposite an upper stop 80 immobilizing the dispenser in the bezel, which makes it possible to seal the filling spout around the outlet channel. Optionally, the upper stop can be fitted with a traction fork 81 shaped to grip the plug by the solid part 70 thereof, which includes a flange. This fork is linked to a cylinder not shown so that the needle can be positively retracted at the time of filling. It should be noted that this arrangement is not necessarily necessary if the injection pressure of the product is sufficient to cause the needle to be raised. Anyway, at the time of filling, the chamber being at its maximum volume, the air evacuation channel is maintained in communication with the atmosphere and the chamber is filled with product by injecting said product under pressure by the outlet channel, as illustrated in FIG. 4. The filling process is completed by pushing the plug back as far as possible when the distributor 11 is released from the stop 80.

Claims

REVENDICATIONS
1. Distributeur de produit liquide ou pâteux comprenant un corps creux (14) et un piston (20) monté à déplacement étanche à l'intérieur de celui-ci et délimitant avec ledit corps une chambre pour le produit à distribuer, un canal de sortie (18) étant défini dans une paroi d'extrémité dudit corps, caractérisé en ce qu'il comporte une molette (24) montée en rotation par rapport audit corps à une extrémité de celui-ci, en ce qu'un agencement de blocage en rotation (38) est défini entre ledit corps et ledit piston, en ce que ledit piston est pourvu d'une jupe creuse (30) filetée intérieurement en ce que ladite molette comporte une partie cylindrique interne (32) engagée dans ladite jupe creuse et en ce que cette partie cylindrique est filetée extérieurement et vissée dans ladite jupe creuse.1. Distributor of liquid or pasty product comprising a hollow body (14) and a piston (20) mounted with sealed movement inside thereof and delimiting with said body a chamber for the product to be dispensed, an outlet channel (18) being defined in an end wall of said body, characterized in that it comprises a wheel (24) rotatably mounted with respect to said body at one end of it, in that a blocking arrangement in rotation (38) is defined between said body and said piston, in that said piston is provided with a hollow skirt (30) internally threaded in that said wheel has an internal cylindrical part (32) engaged in said hollow skirt and in that this cylindrical part is externally threaded and screwed into said hollow skirt.
2. Distributeur selon la revendication 1, caractérisé en ce qu'il comporte des moyens de dosage de la quantité de produit extrait.2. Dispenser according to claim 1, characterized in that it comprises means for dosing the quantity of product extracted.
3. Distributeur selon la revendication 1 ou 2, caractérisé en ce que des moyens de blocage anti-retour (46) sont définis entre la molette et le corps pour imposer une rotation en sens unique de la molette par rapport audit corps.3. Dispenser according to claim 1 or 2, characterized in that non-return locking means (46) are defined between the wheel and the body to impose a rotation in one direction of the wheel relative to said body.
4. Distributeur selon la revendication 3, caractérisé en ce que ladite molette et/ou ledit corps étant réalisés en matériau plastique relativement déformable, lesdits moyens de blocage anti-retour comportent des nervures en dents de scie (48,49), définies sur deux parties globalement cylindriques en regard dudit corps et de ladite molette et imbriquées les unes dans les autres.4. Dispenser according to claim 3, characterized in that said wheel and / or said body being made of relatively deformable plastic material, said non-return locking means comprise sawtooth ribs (48,49), defined on two generally cylindrical parts opposite said body and said wheel and nested one inside the other.
5. Distributeur selon l'une des revendications précédentes, caractérisé en ce que ladite molette et ledit corps sont immobilisés en translation l'un par rapport à l'autre par un ensemble jonc-gorge, ledit jonc (34) et ladite gorge (35) étant définis sur deux parties globalement cylindriques en regard du corps et de la molette.5. Distributor according to one of the preceding claims, characterized in that said wheel and said body are immobilized in translation relative to one another by a rod-groove assembly, said rod (34) and said groove (35 ) being defined on two generally cylindrical parts opposite the body and the wheel.
6. Distributeur selon l'une des revendications précédentes, caractérisé en ce que ledit agencement de blocage en rotation comporte au moins une nervure (40) définie à la face interne dudit corps et s'étendant parallèlement à l'axe de déplacement dudit piston. 6. Dispenser according to one of the preceding claims, characterized in that said rotation blocking arrangement comprises at least one rib (40) defined on the internal face of said body and extending parallel to the axis of movement of said piston.
7. Distributeur selon la revendication 6, caractérisé en ce que lesdites nervures sont pratiquées (40) dans une portion interne de diamètre élargi dudit corps7. Distributor according to claim 6, characterized in that said ribs are formed (40) in an internal portion of enlarged diameter of said body
8. Distributeur selon la revendication 6 ou 7, caractérisé en ce que ledit piston (20) est réalisé dans un matériau plastique relativement souple, en sorte que la ou chaque nervure dudit corps y imprime son empreinte pour assurer l'immobilisation en rotation dudit piston par rapport audit corps.8. Distributor according to claim 6 or 7, characterized in that said piston (20) is made of a relatively flexible plastic material, so that the or each rib of said body imprints its imprint thereon to ensure immobilization in rotation of said piston in relation to said body.
9. Distributeur selon l'une des revendications précédentes, caractérisé en ce qu'un pointeau (54) est monté coulissant de façon étanche au travers dudit piston et dans l'alignement de l'orifice interne dudit canal de sortie, en ce qu'il est sollicité elastiquement vers ledit canal de sortie et en ce que l'extrémité dudit pointeau (56) est conformée et dimensionnée pour s'engager dans ledit canal de sortie et l'obturer. 9. Dispenser according to one of the preceding claims, characterized in that a needle (54) is mounted to slide in leaktight manner through said piston and in alignment with the internal orifice of said outlet channel, in that it is urged elastically towards said outlet channel and in that the end of said needle (56) is shaped and dimensioned to engage in said outlet channel and to close it.
10. Distributeur selon la revendication 9, caractérisé en ce que ledit canal de sortie est constitué par un trou rectiligne axial traversant ladite paroi d'extrémité et en ce que ledit pointeau comporte une portion d'extrémité conformée et dimensionnée pour obturer ledit trou sensiblement jusqu'à la face externe (57) de ladite paroi d'extrémité dudit corps.10. A dispenser according to claim 9, characterized in that said outlet channel is constituted by a rectilinear axial hole passing through said end wall and in that said needle comprises an end portion shaped and dimensioned to close said hole substantially up to 'to the external face (57) of said end wall of said body.
11. Distributeur selon la revendication 10, caractétisé en ce que ledit pointeau présente une réduction de section dans ladite chambre.11. Distributor according to claim 10, characterized in that said needle has a reduction in section in said chamber.
12. Distributeur selon l'une des revendications 9 à 11, caractérisé en ce qu'un ressort (60) est installé en précompression dans ladite jupe creuse entre un épaulement dudit pointeau et ladite molette.12. Distributor according to one of claims 9 to 11, characterized in that a spring (60) is installed in precompression in said hollow skirt between a shoulder of said needle and said wheel.
13. Distributeur selon l'une des revendications 9 à 12, caractérisé en ce qu'un canal d'évacuation d'air (65), obturable, est défini dans ledit pointeau, pour le remplissage de la chambre.13. Distributor according to one of claims 9 to 12, characterized in that an air evacuation channel (65), closable, is defined in said needle, for filling the chamber.
14. Dispositif selon la revendication 13, caractérisé en ce que ledit canal d'évacuation d'air comporte un tronçon axial (68) débouchant à l'arrière du pointeau et en ce qu'un bouchon (66) est engagé par l'arrière dans ce tronçon axial.14. Device according to claim 13, characterized in that said air discharge channel comprises an axial section (68) opening at the rear of the needle and in that a plug (66) is engaged from the rear in this axial section.
15. Distributeur selon l'une des revendications précédentes, caractérisé en ce que ledit corps et ladite molette sont deux éléments globalement cylindriques et agencés dans le prolongement l'un de l'autre. 15. Dispenser according to one of the preceding claims, characterized in that said body and said wheel are two generally cylindrical elements and arranged in the extension of one another.
16. Procédé de remplissage d'un distributeur selon l'une des revendications 13 ou 14, caractérisé en ce qu'il consiste, ladite chambre étant à son volume maximum, à maintenir (81) ledit canal d'évacuation d'air en communication avec l'atmosphère, à remplir ladite chambre (21) en injectant du produit sous pression par ledit canal de sortie et à reboucher (66) le canal de sortie d'air lorsque ladite chambre est remplie. 16. A method of filling a distributor according to one of claims 13 or 14, characterized in that it consists, said chamber being at its maximum volume, in maintaining (81) said air discharge channel in communication with the atmosphere, filling said chamber (21) by injecting pressurized product through said outlet channel and plugging (66) the air outlet channel when said chamber is filled.
EP03795043A 2002-09-13 2003-09-12 Dispenser for liquid or pasty product Revoked EP1549566B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0211417 2002-09-13
FR0211417A FR2844506B1 (en) 2002-09-13 2002-09-13 DISPENSER OF LIQUID OR PASTY PRODUCT
PCT/FR2003/002699 WO2004024592A1 (en) 2002-09-13 2003-09-12 Dispenser for liquid or pasty product

Publications (2)

Publication Number Publication Date
EP1549566A1 true EP1549566A1 (en) 2005-07-06
EP1549566B1 EP1549566B1 (en) 2008-10-29

Family

ID=31897392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03795043A Revoked EP1549566B1 (en) 2002-09-13 2003-09-12 Dispenser for liquid or pasty product

Country Status (13)

Country Link
US (1) US7325707B2 (en)
EP (1) EP1549566B1 (en)
JP (1) JP2005538002A (en)
CN (1) CN100411957C (en)
AT (1) ATE412590T1 (en)
AU (1) AU2003276331A1 (en)
BR (1) BR0314432A (en)
CA (1) CA2498744A1 (en)
DE (1) DE60324445D1 (en)
ES (1) ES2315564T3 (en)
FR (1) FR2844506B1 (en)
MX (1) MXPA05002759A (en)
WO (1) WO2004024592A1 (en)

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Also Published As

Publication number Publication date
CA2498744A1 (en) 2004-03-25
BR0314432A (en) 2005-07-19
DE60324445D1 (en) 2008-12-11
FR2844506B1 (en) 2004-12-10
CN1681720A (en) 2005-10-12
CN100411957C (en) 2008-08-20
MXPA05002759A (en) 2005-06-03
ATE412590T1 (en) 2008-11-15
JP2005538002A (en) 2005-12-15
FR2844506A1 (en) 2004-03-19
WO2004024592A1 (en) 2004-03-25
AU2003276331A1 (en) 2004-04-30
EP1549566B1 (en) 2008-10-29
US20050242127A1 (en) 2005-11-03
ES2315564T3 (en) 2009-04-01
US7325707B2 (en) 2008-02-05

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