EP1606063B1 - Fluid product distribution body and fluid product distributor comprising such a body - Google Patents

Fluid product distribution body and fluid product distributor comprising such a body Download PDF

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Publication number
EP1606063B1
EP1606063B1 EP04719490A EP04719490A EP1606063B1 EP 1606063 B1 EP1606063 B1 EP 1606063B1 EP 04719490 A EP04719490 A EP 04719490A EP 04719490 A EP04719490 A EP 04719490A EP 1606063 B1 EP1606063 B1 EP 1606063B1
Authority
EP
European Patent Office
Prior art keywords
seat
sleeve
valve
chamber
fluid
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.)
Expired - Fee Related
Application number
EP04719490A
Other languages
German (de)
French (fr)
Other versions
EP1606063A2 (en
Inventor
Alain Behar
Laurent Decottignies
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.)
Aptar France SAS
Original Assignee
Valois SAS
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Filing date
Publication date
Application filed by Valois SAS filed Critical Valois SAS
Publication of EP1606063A2 publication Critical patent/EP1606063A2/en
Application granted granted Critical
Publication of EP1606063B1 publication Critical patent/EP1606063B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1076—Traction springs, e.g. stretchable sleeve
    • 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
    • B05B11/02—Membranes or pistons acting on the contents inside the container, e.g. follower pistons
    • B05B11/028—Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container

Definitions

  • the present invention relates to a fluid dispenser member for mounting on a fluid reservoir fluid to collect fluid.
  • the invention also relates to a fluid dispenser essentially consisting of such a dispensing member and its associated fluid reservoir. This type of dispensing member is frequently used in the fields of perfumery, cosmetics or even pharmaceuticals to produce dispensers of fluid product with manual or repeated operation at a rapid rate.
  • the dispensing member is a pump or a valve comprising a fluid product distribution chamber of variable volume.
  • the chamber conventionally comprises an inlet valve through which the chamber communicates with the reservoir.
  • the chamber also comprises a piston displaceable by pressing a pusher to vary the volume of the chamber and thus put the fluid contained in the chamber under pressure.
  • the piston is generally biased to the rest position by return spring means.
  • an outlet valve allows the fluid under pressure to exit the chamber to flow to a dispensing orifice.
  • the outlet valve comprises a valve seat and a movable valve member movable to come into sealing contact with its seat. When the pressure is sufficiently high in the chamber, the movable member is detached from its seat and thus clear an outlet passage for the fluid under pressure. This is a very classic design for a pump.
  • resilient material comprises a central portion, a peripheral portion and a stretchable elastic joining portion connecting the central portion to the peripheral portion.
  • the central portion rests on a socket forming an inlet opening.
  • the central portion forms a kind of elastically deformable tongue that selectively rests tightly on the inlet opening.
  • the tongue and the hole together form the inlet flap.
  • the connecting part serves as a return spring.
  • each part of the elastically deformable part defines a proper function, namely that of the inlet valve for the central part, of the return spring for the connecting part and the flap output for the peripheral part.
  • the present invention aims to define a dispensing member whose functional distribution is different. Another object is to provide a dispensing member whose dispensing orifice is fixed, that is to say independent in displacement of the actuating pusher.
  • the present invention proposes a fluid product dispensing member intended to be mounted on a fluid reservoir for taking fluid from it, said dispensing member comprising a fluid volume distribution chamber of variable volume, said chamber comprising an inlet valve through which the chamber is intended to be placed in fluid communication with the reservoir, said valve comprising a seat and a movable member, a piston displaceable by pressing on a pusher to vary the volume of the chamber and thus putting the fluid contained in the chamber under pressure, said piston being biased in the rest position by return spring means, and an outlet valve through which the fluid under pressure leaves the chamber to flow to a dispensing orifice, said valve comprising a valve seat and a movable valve member adapted to move in sealing contact he and out of contact of said seat, characterized in that the return spring means and the movable outlet valve member are formed by one and the same element.
  • the element is deformable by elastic stretching.
  • the outlet valve seat can be fixed relative to the seat of the inlet valve. Additionally or alternatively, the outlet valve seat may be movable relative to the pusher.
  • the element comprises a wall in sealing contact with the seat, said wall sliding tightly on the seat.
  • the element comprises a fixed end secured to anchoring means and a movable end, the piston being secured to the movable end.
  • the piston and the element are made integrally.
  • the seat is annular, the element sliding tightly inside the seat.
  • the element is formed by a sleeve which is elastically stretchable, substantially cylindrical and elastically deformable inwardly.
  • the sleeve comprises an outer wall adapted to come into sealing sliding contact with a peripheral annular seat which surrounds the sleeve.
  • the sleeve is formed by a one-piece piece also forming the piston and anchoring means.
  • the sleeve comes into pressed contact with increasing force on the seat as it is further stretched.
  • the sleeve may be in the form of a substantially cylindrical or frustoconical tube section whose outer wall comes into contact with an outer peripheral annular seat.
  • the present invention also relates to a fluid dispenser comprising a fluid reservoir and a dispensing member as defined above. '
  • the dispensing member is a pump.
  • the spirit of the invention which will be defined hereinafter can also be applied to a valve.
  • the fluid dispenser that integrates the dispensing member of the invention essentially comprises a container 2 associated with said dispensing member of the invention.
  • the container 2 defines a tank drum 21 which is formed over most of its height with a substantially cylindrical cross section which is not necessarily circular.
  • the barrel 21 internally forms a sealed sliding wall.
  • a scraper or follower piston 24 is disposed inside the barrel 21 and this piston 24 is intended to move with a sliding contact sealing against the inner wall of the barrel 21.
  • the barrel 21 and the follower piston 24 together define a reservoir 20.
  • This reservoir is here of variable volume since the piston 24 will move in the drum 21 so as to reduce the useful volume of the reservoir 20.
  • the container 2 comprises a lower end 23 and an upper end
  • the neck defines an opening often of reduced section relative to the barrel 21.
  • Figures 1 and 2 show the reservoir 20 with a maximum volume.
  • the piston 24 is then located near the lower end 23 of the barrel 21.
  • the lower end 23 may be provided with a bottom 25 advantageously pierced with one or more holes for communicating the space between the piston 24 and the bottom 25 with the outside.
  • the fluid product occupies the space formed between the piston 24 the barrel 21 and the neck 22.
  • the piston 24 moves by suction towards the neck 22, which has the effect to reduce the useful volume of the reservoir 20.
  • This is a conventional piston system, frequently used for sensitive fluid products that can deteriorate in contact with air.
  • the advantage with this type of tank is precisely that the fluid product is never in contact with the outside air.
  • the dispensing member according to the invention can be used with other types of tank, such as for example flexible bags freely deformable or more conventional containers in the form of bottles or rigid bottles.
  • the dispensing member 1 comprises a body made here in two parts, namely a base 11 and a cap 12.
  • the body is made in two parts for reasons of simplicity of molding. Indeed, it is not excluded that the body can be made in one piece.
  • the dispensing member also comprises a piece of elastic material 13, a pusher 14 and a movable member of the inlet valve 15. It can thus be said that the dispensing member is made from five separate pieces.
  • the base 11 forms a chamber shaft 111 which is here circular cylindrical in shape, but which may be of different shape, that is to say non-circular and even non-cylindrical.
  • This chamber shaft 111 is extended downwardly by an inlet sleeve 114 which defines a fluid product inlet passage.
  • This sleeve 114 forms an inlet valve seat 115.
  • the sleeve 114 accommodates a movable inlet valve member 15.
  • This movable member 15 in association with the seat 115 together form the inlet valve of the pump.
  • the movable member 15 is formed by a plastic piece forming a corolla sealingly abuts on the seat 115. This is only a particular embodiment that has no limiting scope.
  • the particular shape of the inlet valve is not critical for the present invention, and any input valve can be used in the invention.
  • the chamber shaft 111 is extended upwards by an annular flange 112 which extends radially outwards. This flange 112 is then extended downwards by a fixing ring 113.
  • This fixing ring 113 is intended to engage with the neck 22.
  • this socket is a latched engagement: the ring 113 forms a detent head intended to engage below a peripheral flange formed by the neck 22.
  • the ring 113 does not even need to be made in one piece with the chamber shaft 111. A fixation by screwing or crimping is also possible.
  • the base 11 also forms an attachment sleeve 116 which extends upwardly in the extension of the ring 113.
  • This attachment sleeve 116 can advantageously be formed only with angular sleeve sections so as to form crenellations.
  • the attachment sleeve 116 thus consists of several angular segments separated by slots.
  • the cap 12 comprises an outer skirt 121 intended to engage advantageously snapped with the ring 113.
  • the skirt can bear against the container 2.
  • the skirt 121 surrounds the ring 113.
  • the skirt 121 forms a dispensing nozzle 126 which defines a dispensing orifice 127.
  • the skirt 121 also comes into contact with the fixing sleeve 116.
  • the cap 12 comprises an inner sleeve 122 which concentrically extends inside the skirt 121.
  • the sleeve 122 and the skirt 121 are connected together at their upper ends.
  • the skirt 121 and the sleeve 122 form between them an annular which forms an outlet channel section 129 which communicates with
  • the bushing 122 extends downwardly through a bottom flange 128.
  • the bottom flange 128 supports a guide bushing 123 which extends upwardly. Still further inside, the bottom flange 128 is connected to a support sleeve 124. This sleeve 124 extends upwardly but also downwardly relative to the bottom flange 128.
  • the support sleeve 124 has at least one cutout 124 'in the form of a longitudinal vertical slot. This slot 124 'extends below the bottom flange 128. Below this slot 124', the support sleeve 124 forms an annular bead 125 which extends radially inwardly. This bead 125 forms a kind of protuberance with respect to the inner wall of the support sleeve 124.
  • the end of the support sleeve 124 engages with the upper end of the chamber shaft 111 formed by the base 11. contact between the support sleeve 124 and the base 11 is preferably sealed.
  • the bottom flange 128 remains spaced from the annular flange 112 so as to form another section of the outlet channel 129. This section 129 is connected directly to the dispensing orifice 127. It can be said that the support sleeve 124 extends substantially the chamber shaft 111 and provides a lateral outlet through the slot 124 which then communicates via the outlet channel 129 to the nozzle 126 forming the dispensing orifice 127.
  • the piece of elastic material 13 comprises an anchor ring 136, an elastically stretchable sleeve 131 and a piston 135.
  • the piece of elastic material 13 is made integrally.
  • the anchor ring 136 engages on the upper part of the support sleeve 124.
  • the ring 126 can form a lip which extends between the sleeve 123 and the sleeve 124.
  • the anchoring ring 136 is thus integral with the
  • the sleeve 131 comprises an upper end 132 connected to the ring gear 136 and a lower end 133 connected to the piston 135.
  • the sleeve 131 extends inside the sleeve 124 and the chamber shaft 111 and the piston 135 is located inside the chamber shaft 111.
  • the sleeve 131 has a stretch deformation characteristic so that the length or height of the sleeve can vary considerably.
  • the sleeve also has radially deformable inward and outward characteristics. More simply, the sleeve can be likened to a section of elastically stretchable pipe of substantially cylindrical or frustoconical shape. In the case shown in the figures, the sleeve has a slightly frustoconical shape: in fact, the section of the sleeve at its upper end 132 is slightly greater than that at its lower end 133.
  • the sleeve 131 and the piston 135 do not need to come into sealed contact inside the chamber shaft 111. Indeed, a gap may remain between the piston and the barrel.
  • the sleeve 131 extends inside the support sleeve 124, its outer wall 130 is brought into peripheral contact with the cord 125. According to the invention, this contact is sealed.
  • the barrel 111, the lower portion of the sleeve 124 extending from the cord 125, the lower portion of the sleeve 131, the piston 135 and the movable member 15 of the inlet valve together form a chamber distribution 10 of variable volume.
  • the displacement of the piston 135 in the barrel 111 by more or less stretching the sleeve 131 varies the internal volume of the distribution chamber 10.
  • the dispensing member comprises a pusher 14 forming a bearing surface 141 bordered by a retaining skirt 144 engaged around the guide sleeve 123.
  • the pusher 14 also comprises a rod actuation 142 which is engaged with the piston 135. It is easily understood that by pressing on the bearing surface 141 of the pusher 14, the rod 142 is pressed into the sleeve which has the effect of moving the piston 135 towards the valve input. The sleeve is then deformed by elastic stretching and its outer wall 130 slides sealingly against the outer peripheral bead 125.
  • the cuff which although already stretched elastically, will deform radially inwardly by peeling off the bead 125. This has the effect of clearing an outlet passage for the fluid under pressure which can then flow through the slot 124 'and the channel at the outlet 129 to reach the dispensing orifice 127.
  • the outer wall 130 of the sleeve returns in sealing contact against the cord 125.
  • the cord 125 thus fulfills an outlet valve seat function, and the outer wall of the sleeve performs a function of movable outlet valve member for selective sealing engagement.
  • the contact of the outer wall 130 of the sleeve is a dynamic contact since sliding. Indeed, at the beginning of the actuation phase, the piston 135 moves which has the effect of stretching the sleeve 131. The outer wall 130 then moves in sealing contact on or inside the cord 125.
  • the same and unique element namely the sleeve 131, defines, forms or is formed by a zone filling both the function of return spring and movable member of the outlet valve.
  • the arrangement of the sleeve inside the seat allows for a dispenser whose dispensing orifice is fixed relative to the reservoir. Indeed, the displacement of the pusher 14 is completely independent of the dispensing orifice.
  • the outlet valve seat defines a relative throttle point of the sleeve at which the dummy straight line separating the upper end and the lower end of the sleeve is broken.
  • the sealing contact of the outer wall 130 of the sleeve on the seat cord 125 is effected with a constantly increasing support force as the push-button 14 is depressed. In other words, more pressing the pusher 14 and the cuff presses against the seat.
  • the contact between the sleeve and the seat is, however, broken when the pressure reaches a sufficient value inside the distribution chamber 10.
  • the sleeve 131 here extends substantially rectilinear or straight.
  • the outlet valve seat 125 forms a larger throttle, so that the sleeve may have a shape of X or Y. The more the seat throttles the cuff and the pressure threshold more opening of the outlet valve is important.
  • a dispenser according to an embodiment not shown may comprise a deformable member by bending or compression which fills both the functions of spring and outlet valve at a single zone.

Abstract

The invention relates to a fluid product distribution body (1), comprising a fluid product distribution chamber (10) with a variable volume defined with an inlet valve (15, 115), by means of which the chamber (10) communicates with the reservoir (20), said valve comprising a seat (115) and a moving body (15), a piston (135) which may be displaced to vary the volume of the chamber (10), said piston (135) being held in the rest position by means of a return spring (131) and an outlet valve (131, 125), by means of which the fluid product escapes from the chamber (10), under pressure, to flow towards a distribution opening (127). Said valve comprises a valve seat (125) and a moving valve body (131) which may be displaced with a sealing effect when not in contact with said seat, the return spring means and the mobile valve body being formed by one and the same element (131) which may be deformed by elastic extension. Said element (131) comprising a wall (130) in sealing contact with the seat (125), the seat (125) having an annular embodiment. The invention is characterised in that the element (131) runs in a sealing manner within the seat.

Description

La présente invention concerne un organe de distribution de produit fluide destine à être monté sur un réservoir ce produit fluide pour y prélever du produit fluide. L'invention concerne également un distributeur de produit fluide essentiellement constitué d'un tel organe de distribution et de son réservoir de produit fluide associé. Ce genre d'organe de distribution est fréquemment utilisé dans les domaines de la parfumerie, de la cosmétique ou encore de la pharmacie pour réaliser des distributeurs de produit fluide à actionnement manuel ou répété à cadence rapide.The present invention relates to a fluid dispenser member for mounting on a fluid reservoir fluid to collect fluid. The invention also relates to a fluid dispenser essentially consisting of such a dispensing member and its associated fluid reservoir. This type of dispensing member is frequently used in the fields of perfumery, cosmetics or even pharmaceuticals to produce dispensers of fluid product with manual or repeated operation at a rapid rate.

Généralement, l'organe de distribution est une pompe ou une valve comprenant une chambre de distribution de produit fluide de volume variable. La chambre comprend de manière conventionnelle un clapet d'entrée par lequel la chambre communique avec le réservoir. La chambre comprend également un piston déplaçable par appui sur un poussoir pour faire varier le volume de la chambre et ainsi mettre le produit fluide contenu dans la chambre sous pression. Le piston est généralement sollicité en position de repos par des moyens de ressort de rappel. D'autre part, un clapet de sortie permet au produit fluide sous pression de sortir de la chambre pour s'écouler vers un orifice de distribution. Comme tout clapet, le clapet de sortie comprend un siège de clapet et un organe mobile de clapet apte à se déplacer pour venir en contact étanche avec son siège. Lorsque la pression est suffisamment élevée dans la chambre, l'organe mobile se décolle de son siège pour ainsi dégager un passage de sortie pour le produit fluide sous pression. Il s'agit là d'une conception tout à fait classique pour une pompe.Generally, the dispensing member is a pump or a valve comprising a fluid product distribution chamber of variable volume. The chamber conventionally comprises an inlet valve through which the chamber communicates with the reservoir. The chamber also comprises a piston displaceable by pressing a pusher to vary the volume of the chamber and thus put the fluid contained in the chamber under pressure. The piston is generally biased to the rest position by return spring means. On the other hand, an outlet valve allows the fluid under pressure to exit the chamber to flow to a dispensing orifice. Like all valves, the outlet valve comprises a valve seat and a movable valve member movable to come into sealing contact with its seat. When the pressure is sufficiently high in the chamber, the movable member is detached from its seat and thus clear an outlet passage for the fluid under pressure. This is a very classic design for a pump.

On connaît déjà dans l'art antérieur des organes de distribution du type pompe utilisant une pièce de matière élastique pour former le clapet d'entrée, le ressort de rappel et le clapet de sortie. Plus précisément, la pièce de matière élastique forme les organes mobiles des clapets d'entrée et de sortie destinés à venir sélectivement en contact étanche sur leurs sièges respectifs. On peut par exemple citer le document FR-2 674 024. Dans ce document, une pièce de matière élastique comprend une partie centrale, une partie périphérique et une partie de jonction élastique étirable reliant la partie centrale à la partie périphérique. La partie centrale repose sur une douille formant une ouverture d'entrée. La partie centrale forme une sorte de languette élastiquement déformable qui repose sélectivement de manière étanche sur l'ouverture d'entrée. La languette et le trou forment ensemble le clapet d'entrée. La partie de jonction fait office de ressort de rappel. La partie périphérique est en prise avec un poussoir qui forme un conduit de sortie. La partie périphérique forme également une lèvre périphérique qui vient en appui sur une partie également périphérique du poussoir. La lèvre périphérique forme l'organe mobile du clapet de sortie. Dans la pompe décrite dans ce document de l'art antérieur, chaque partie de la pièce élastiquement déformable définit une fonction propre, à savoir celle de clapet d'entrée pour la partie centrale, de ressort de rappel pour la partie de liaison et de clapet de sortie pour la partie périphérique.Already known in the prior art pump-type dispensing members using a piece of resilient material to form the inlet valve, the return spring and the outlet valve. More specifically, the piece of elastic material forms the movable members of the inlet and outlet valves for selectively coming into sealing contact on their respective seats. For example, document FR-2 674 024 may be cited. resilient material comprises a central portion, a peripheral portion and a stretchable elastic joining portion connecting the central portion to the peripheral portion. The central portion rests on a socket forming an inlet opening. The central portion forms a kind of elastically deformable tongue that selectively rests tightly on the inlet opening. The tongue and the hole together form the inlet flap. The connecting part serves as a return spring. The peripheral portion is engaged with a pusher that forms an outlet conduit. The peripheral portion also forms a peripheral lip which bears on an equally peripheral part of the pusher. The peripheral lip forms the movable member of the outlet valve. In the pump described in this document of the prior art, each part of the elastically deformable part defines a proper function, namely that of the inlet valve for the central part, of the return spring for the connecting part and the flap output for the peripheral part.

La présente invention a pour but de définir un organe de distribution dont la répartition fonctionnelle est différente. Un autre but est de réaliser un organe de distribution dont l'orifice de distribution est fixe, c'est-à-dire indépendant en déplacement du poussoir d'actionnement.The present invention aims to define a dispensing member whose functional distribution is different. Another object is to provide a dispensing member whose dispensing orifice is fixed, that is to say independent in displacement of the actuating pusher.

Pour atteindre ces buts, la présente invention propose un organe de distribution de produit fluide destiné à être monté sur un réservoir de produit fluide pour y prélever du produit fluide, ledit organe de distribution comprenant une chambre de distribution de produit fluide de volume variable, ladite chambre comprenant un clapet d'entrée par lequel la chambre est destinée à être mise en communication de fluide avec le réservoir, ledit clapet comprenant un siège et un organe mobile, un piston déplaçable par appui sur un poussoir pour faire varier le volume de la chambre et ainsi mettre le produit fluide contenu dans la chambre sous pression, ledit piston étant sollicité en position de repos par des moyens de ressort de rappel, et un clapet de sortie par lequel le produit fluide sous pression sort de la chambre pour s'écouler vers un orifice de distribution, ledit clapet comprenant un siège de clapet et un organe mobile de clapet apte à se déplacer en contact étanche et hors de contact dudit siège, caractérisé en ce que les moyens de ressort de rappel et l'organe mobile de clapet de sortie sont formés par un seul et même élément. L'élément est déformable par étirage élastique. D'autre part, le siège de clapet de sortie peut être fixe par rapport au siège du clapet d'entrée. Additionnellement ou en variante, le siège de clapet de sortie peut être mobile par rapport au poussoir. On obtient ainsi un organe de distribution à orifice de distribution fixe comprenant un élément dont la même zone forme à la fois le ressort de rappel et l'organe mobile de clapet de sortie. La déformation est obtenue par étirage ou élongation. On peut aussi prévoir une déformation par flexion ou compression.To achieve these objects, the present invention proposes a fluid product dispensing member intended to be mounted on a fluid reservoir for taking fluid from it, said dispensing member comprising a fluid volume distribution chamber of variable volume, said chamber comprising an inlet valve through which the chamber is intended to be placed in fluid communication with the reservoir, said valve comprising a seat and a movable member, a piston displaceable by pressing on a pusher to vary the volume of the chamber and thus putting the fluid contained in the chamber under pressure, said piston being biased in the rest position by return spring means, and an outlet valve through which the fluid under pressure leaves the chamber to flow to a dispensing orifice, said valve comprising a valve seat and a movable valve member adapted to move in sealing contact he and out of contact of said seat, characterized in that the return spring means and the movable outlet valve member are formed by one and the same element. The element is deformable by elastic stretching. On the other hand, the outlet valve seat can be fixed relative to the seat of the inlet valve. Additionally or alternatively, the outlet valve seat may be movable relative to the pusher. There is thus obtained a dispensing member with a fixed dispensing orifice comprising an element whose same zone forms both the return spring and the movable outlet valve member. The deformation is obtained by stretching or elongation. It is also possible to provide bending or compression deformation.

L'élément comprend une paroi en contact étanche avec le siège, ladite paroi coulissant de manière étanche sur le siège.The element comprises a wall in sealing contact with the seat, said wall sliding tightly on the seat.

Selon une autre caractéristique de l'invention, l'élément comprend une extrémité fixe solidaire de moyens d'ancrage et une extrémité mobile, le piston étant solidaire de l'extrémité mobile. Avantageusement, le piston et l'élément sont réalisés de manière monobloc.According to another characteristic of the invention, the element comprises a fixed end secured to anchoring means and a movable end, the piston being secured to the movable end. Advantageously, the piston and the element are made integrally.

Selon une forme de réalisation avantageuse, le siège est annulaire, l'élément coulissant de manière étanche à l'intérieur du siège.According to an advantageous embodiment, the seat is annular, the element sliding tightly inside the seat.

Selon une forme pratique de réalisation, l'élément est formé par une manchette qui est élastiquement étirable, sensiblement cylindrique et élastiquement déformable vers l'intérieur. Avantageusement, la manchette comprend une paroi extérieure adaptée à venir en contact coulissant étanche avec un siège annulaire périphérique qui entoure la manchette. De préférence, la manchette est formée par une pièce monobloc formant également le piston et des moyens d'ancrage. Avantageusement, la manchette vient en contact appuyé avec une force croissante sur le siège à mesure qu'elle est davantage étirée. La manchette peut se présenter sous la forme d'une section de tube sensiblement cylindrique ou tronconique dont la paroi externe vient en contact avec un siège annulaire périphérique externe.According to a practical embodiment, the element is formed by a sleeve which is elastically stretchable, substantially cylindrical and elastically deformable inwardly. Advantageously, the sleeve comprises an outer wall adapted to come into sealing sliding contact with a peripheral annular seat which surrounds the sleeve. Preferably, the sleeve is formed by a one-piece piece also forming the piston and anchoring means. Advantageously, the sleeve comes into pressed contact with increasing force on the seat as it is further stretched. The sleeve may be in the form of a substantially cylindrical or frustoconical tube section whose outer wall comes into contact with an outer peripheral annular seat.

La présente invention a également pour objet un distributeur de produit fluide comprenant un réservoir de produit fluide et un organe de distribution tel que défini ci-dessus. 'The present invention also relates to a fluid dispenser comprising a fluid reservoir and a dispensing member as defined above. '

L'invention sera maintenant plus amplement décrite en référence aux dessins joints donnant à titre d'exemple non limitatif un mode de réalisation de l'invention.The invention will now be more fully described with reference to the accompanying drawings giving by way of non-limiting example an embodiment of the invention.

Sur les figures :

  • la figure 1 est une vue en section transversale verticale à travers un distributeur de produit fluide équipé d'un organe de distribution de produit fluide selon l'invention en position de repos,
  • la figure 2 est une vue similaire à celle de la figure 1 en position actionnée, et
  • la figure 3 est une vue agrandie de l'organe de distribution de la figure 1.
In the figures:
  • FIG. 1 is a view in vertical cross section through a fluid dispenser equipped with a fluid dispenser member according to the invention in the rest position,
  • FIG. 2 is a view similar to that of FIG. 1 in the actuated position, and
  • FIG. 3 is an enlarged view of the dispensing member of FIG. 1.

Dans l'exemple de réalisation utilisé pour expliquer la présente invention et représenté sur les figures 1 à 3, l'organe de distribution est une pompe. Toutefois, l'esprit de l'invention qui sera défini ici après peut également être appliqué à une valve.In the exemplary embodiment used to explain the present invention and shown in FIGS. 1 to 3, the dispensing member is a pump. However, the spirit of the invention which will be defined hereinafter can also be applied to a valve.

Le distributeur de produit fluide qui intègre l'organe de distribution de l'invention comprend essentiellement un récipient 2 associé audit organe de distribution de l'invention.The fluid dispenser that integrates the dispensing member of the invention essentially comprises a container 2 associated with said dispensing member of the invention.

Le récipient 2 définit un fût de réservoir 21 qui est réalisé sur la majeure partie de sa hauteur avec une section transversale sensiblement cylindrique qui n'est pas forcément circulaire. Le fût 21 forme intérieurement une paroi de coulissement étanche. Un piston racleur ou suiveur 24 est disposé à l'intérieur du fût 21 et ce piston 24 est destiné à se déplacer avec un contact de coulissement étanche contre la paroi interne du fût 21. Le fût 21 et le piston suiveur 24 définissent ensemble un réservoir de produit fluide 20. Ce réservoir est ici de volume variable étant donné que le piston 24 va se déplacer dans le fût 21 de manière à diminuer le volume utile du réservoir 20. Généralement, le récipient 2 comprend une extrémité inférieure 23 et une extrémité supérieure formant un col 22. Le col définit une ouverture souvent de section réduite par rapport au fût 21. Les figures 1 et 2 représentent le réservoir 20 avec un volume maximal. Le piston 24 est alors situé à proximité de l'extrémité inférieure 23 du fût 21. Optionnellement, l'extrémité inférieure 23 peut être pourvue d'un fond 25 avantageusement percée d'un ou de plusieurs trous permettant de faire communiquer l'espace situé entre le piston 24 et le fond 25 avec l'extérieur. Le produit fluide occupe l'espace formé entre le piston 24 le fût 21 et le col 22. A mesure que du produit fluide est extrait du réservoir 20, le piston 24 se déplace par aspiration en direction du col 22, ce qui a pour effet de diminuer le volume utile du réservoir 20. Il s'agit là d'un système à piston classique, fréquemment utilisé pour des produits fluides sensibles qui peuvent se détériorer en contact de l'air. L'avantage avec ce type de réservoir est précisément que le produit fluide n'est jamais en contact de l'air extérieur. Toutefois, l'organe de distribution selon l'invention peut être utilisé avec d'autres types de réservoir, comme par-exemple des poches souples librement déformables ou encore des récipients plus classiques sous la forme de bouteilles ou de flacons rigides.The container 2 defines a tank drum 21 which is formed over most of its height with a substantially cylindrical cross section which is not necessarily circular. The barrel 21 internally forms a sealed sliding wall. A scraper or follower piston 24 is disposed inside the barrel 21 and this piston 24 is intended to move with a sliding contact sealing against the inner wall of the barrel 21. The barrel 21 and the follower piston 24 together define a reservoir 20. This reservoir is here of variable volume since the piston 24 will move in the drum 21 so as to reduce the useful volume of the reservoir 20. Generally, the container 2 comprises a lower end 23 and an upper end The neck defines an opening often of reduced section relative to the barrel 21. Figures 1 and 2 show the reservoir 20 with a maximum volume. The piston 24 is then located near the lower end 23 of the barrel 21. Optionally, the lower end 23 may be provided with a bottom 25 advantageously pierced with one or more holes for communicating the space between the piston 24 and the bottom 25 with the outside. The fluid product occupies the space formed between the piston 24 the barrel 21 and the neck 22. As fluid is extracted from the reservoir 20, the piston 24 moves by suction towards the neck 22, which has the effect to reduce the useful volume of the reservoir 20. This is a conventional piston system, frequently used for sensitive fluid products that can deteriorate in contact with air. The advantage with this type of tank is precisely that the fluid product is never in contact with the outside air. However, the dispensing member according to the invention can be used with other types of tank, such as for example flexible bags freely deformable or more conventional containers in the form of bottles or rigid bottles.

L'organe de distribution 1 selon l'invention comprend un corps réalisé ici en deux parties, à savoir une embase 11 et une coiffe 12. Le corps est réalisé en deux parties pour des raisons de simplicité de moulage. En effet, il n'est pas exclu que le corps puisse être réalisé de manière monobloc. Outre le corps formé de l'embase 11 et de la coiffe 12, l'organe de distribution comprend également une pièce de matière élastique 13, un poussoir 14 ainsi qu'un organe mobile de clapet d'entrée 15. On peut ainsi dire que l'organe de distribution est réalisé à partir de cinq pièces distinctes.The dispensing member 1 according to the invention comprises a body made here in two parts, namely a base 11 and a cap 12. The body is made in two parts for reasons of simplicity of molding. Indeed, it is not excluded that the body can be made in one piece. In addition to the body formed of the base 11 and the cap 12, the dispensing member also comprises a piece of elastic material 13, a pusher 14 and a movable member of the inlet valve 15. It can thus be said that the dispensing member is made from five separate pieces.

L'embase 11 forme un fût de chambre 111 qui est ici de forme cylindrique circulaire, mais qui peut être de forme différente, c'est-à-dire non circulaire et même non cylindrique. Ce fût de chambre 111 se prolonge vers le bas par un manchon d'entrée 114 qui définit un passage d'entrée de produit fluide. Ce manchon 114 forme un siège de clapet d'entrée 115. Intérieurement, le manchon 114 accueille un organe mobile de clapet d'entrée 15. Cet organe mobile 15 en association avec le siège 115 forment ensemble le clapet d'entrée de la pompe. Sur les figures, l'organe mobile 15 est formé par une pièce en plastique formant une corolle venant en appui étanche sur le siège 115. Il ne s'agit ici que d'une forme de réalisation particulière qui n'a aucune portée limitative. A la place de cette pièce en plastique 15, on peut très bien utiliser une bille en métal. Plus généralement, la forme particulière du clapet d'entrée n'est pas critique pour la présente invention, et n'importe quel clapet d'entrée peut être utilisé dans l'invention. Le fût de chambre 111 se prolonge vers le haut par une bride annulaire 112 qui s'étend radialement vers l'extérieur. Cette bride 112 se prolonge ensuite vers le bas par une bague de fixation 113. Cette bague de fixation 113 est destinée à venir en prise avec le col 22. Dans l'exemple représenté sur les figures, cette prise est une prise encliquetée : la bague 113 forme une tête d'encliquetage destinée à venir en prise en dessous d'un rebord périphérique formé par le col 22. Là encore, il ne s'agit que d'une forme de réalisation particulière qui n'a aucune portée limitative. En effet, d'autres moyens de fixation peuvent être utilisés dans la présente invention. La bague 113 n'a même pas besoin d'être réalisée de manière monobloc avec le fût de chambre 111. Une fixation par vissage ou sertissage est également envisageable. L'embase 11 forme également un manchon de fixation 116 qui s'étend vers le haut dans le prolongement de la bague 113. Ce manchon de fixation 116 peut avantageusement être formé uniquement avec des sections angulaires de manchon de manière à former des créneaux. Le manchon de fixation 116 est ainsi constitué de plusieurs segments angulaires séparés par des fentes. Lorsque l'embase 11 est montée sur le col 22, le fût de chambre 111 pénètre au moins partiellement à l'intérieur de l'ouverture du col 22. Le manchon d'entrée 114 peut être disposé à l'intérieur du réservoir 20. De cette manière, le produit fluide stocké dans le réservoir 20 peut pénétrer à l'intérieur de l'embase à travers le manchon 114 après avoir ouvert le clapet d'entrée, c'est-à-dire décoller l'organe mobile 15 de son siège 115.The base 11 forms a chamber shaft 111 which is here circular cylindrical in shape, but which may be of different shape, that is to say non-circular and even non-cylindrical. This chamber shaft 111 is extended downwardly by an inlet sleeve 114 which defines a fluid product inlet passage. This sleeve 114 forms an inlet valve seat 115. Internally, the sleeve 114 accommodates a movable inlet valve member 15. This movable member 15 in association with the seat 115 together form the inlet valve of the pump. In the figures, the movable member 15 is formed by a plastic piece forming a corolla sealingly abuts on the seat 115. This is only a particular embodiment that has no limiting scope. Instead of this plastic part 15, one can very well use a metal ball. More generally, the particular shape of the inlet valve is not critical for the present invention, and any input valve can be used in the invention. The chamber shaft 111 is extended upwards by an annular flange 112 which extends radially outwards. This flange 112 is then extended downwards by a fixing ring 113. This fixing ring 113 is intended to engage with the neck 22. In the example shown in the figures, this socket is a latched engagement: the ring 113 forms a detent head intended to engage below a peripheral flange formed by the neck 22. Again, it is only a particular embodiment that has no limiting scope. Indeed, other fastening means can be used in the present invention. The ring 113 does not even need to be made in one piece with the chamber shaft 111. A fixation by screwing or crimping is also possible. The base 11 also forms an attachment sleeve 116 which extends upwardly in the extension of the ring 113. This attachment sleeve 116 can advantageously be formed only with angular sleeve sections so as to form crenellations. The attachment sleeve 116 thus consists of several angular segments separated by slots. When the base 11 is mounted on the neck 22, the chamber shaft 111 penetrates at least partially inside the opening of the neck 22. The inlet sleeve 114 may be disposed inside the reservoir 20. In this way, the fluid product stored in the reservoir 20 can penetrate inside the base through the sleeve 114 after opening the inlet valve, that is to say, take off the movable member 15 of its seat 115.

La coiffe 12 comprend une jupe extérieure 121 destinée à venir en prise avantageusement encliquetée avec la bague 113. La jupe peut venir en appui sur le récipient 2. La jupe 121 entoure la bague 113. La jupe 121 forme un embout de distribution 126 qui définit un orifice de distribution 127. La jupe 121 vient également en contact du manchon de fixation 116. La coiffe 12 comprend une douille interne 122 qui s'étend de manière concentrique à l'intérieur de la jupe 121. La douille 122 et la jupe 121 sont reliées ensemble au niveau de leurs extrémités supérieures. La jupe 121 et la douille 122 forment entre elles un annulaire qui forme une section de canal de sortie 129 qui communique avec l'orifice de distribution 127. La douille 122 se prolonge vers le bas par une bride de fond 128. La bride de fond 128 supporte une douille de guidage 123 qui s'étend vers le haut. Encore plus à l'intérieur, la bride de fond 128 se raccorde à un manchon de support 124. Ce manchon 124 s'étend vers le haut mais également vers le bas par rapport à la bride de fond 128. Le manchon de support 124 présente au moins une découpe 124' sous la forme d'une fente verticale longitudinale. Cette fente 124' s'étend jusqu'en dessous de la bride de fond 128. En dessous de cette fente 124', le manchon de support 124 forme un cordon annulaire 125 qui s'étend radialement vers l'intérieur. Ce cordon 125 forme une sorte d'excroissance par rapport à la paroi interne du manchon de support 124. L'extrémité du manchon de support 124 vient en prise avec l'extrémité supérieure du fût de chambre 111 formé par l'embase 11. Le contact entre le manchon de support 124 et l'embase 11 est de préférence étanche. La bride de fond 128 reste espacée de la bride annulaire 112 de manière à former une autre section du canal de sortie 129. Cette section 129 est reliée directement à l'orifice de distribution 127. On peut dire que le manchon de support 124 prolonge sensiblement le fût de chambre 111 et offre une sortie latérale à travers la fente 124 qui communique ensuite par l'intermédiaire du canal de sortie 129 jusqu'à l'embout 126 formant l'orifice de distribution 127.The cap 12 comprises an outer skirt 121 intended to engage advantageously snapped with the ring 113. The skirt can bear against the container 2. The skirt 121 surrounds the ring 113. The skirt 121 forms a dispensing nozzle 126 which defines a dispensing orifice 127. The skirt 121 also comes into contact with the fixing sleeve 116. The cap 12 comprises an inner sleeve 122 which concentrically extends inside the skirt 121. The sleeve 122 and the skirt 121 are connected together at their upper ends. The skirt 121 and the sleeve 122 form between them an annular which forms an outlet channel section 129 which communicates with The bushing 122 extends downwardly through a bottom flange 128. The bottom flange 128 supports a guide bushing 123 which extends upwardly. Still further inside, the bottom flange 128 is connected to a support sleeve 124. This sleeve 124 extends upwardly but also downwardly relative to the bottom flange 128. The support sleeve 124 has at least one cutout 124 'in the form of a longitudinal vertical slot. This slot 124 'extends below the bottom flange 128. Below this slot 124', the support sleeve 124 forms an annular bead 125 which extends radially inwardly. This bead 125 forms a kind of protuberance with respect to the inner wall of the support sleeve 124. The end of the support sleeve 124 engages with the upper end of the chamber shaft 111 formed by the base 11. contact between the support sleeve 124 and the base 11 is preferably sealed. The bottom flange 128 remains spaced from the annular flange 112 so as to form another section of the outlet channel 129. This section 129 is connected directly to the dispensing orifice 127. It can be said that the support sleeve 124 extends substantially the chamber shaft 111 and provides a lateral outlet through the slot 124 which then communicates via the outlet channel 129 to the nozzle 126 forming the dispensing orifice 127.

La pièce de matière élastique 13 comprend une couronne d'ancrage 136, une manchette élastiquement étirable 131 et un piston 135. La pièce de matière élastique 13 est réalisée de manière monobloc. La couronne d'ancrage 136 vient en prise sur la partie supérieure du manchon de support 124. La couronne 126 peut former une lèvre qui s'étend entre la douille 123 et le manchon 124. La couronne d'ancrage 136 est ainsi solidaire de la coiffe 12. La manchette 131 comprend une extrémité supérieure 132 reliée à la couronne 136 et une extrémité inférieure 133 reliée au piston 135. La manchette 131 s'étend à l'intérieur du manchon 124 et du fût de chambre 111 et le piston 135 est situé à l'intérieur du fût de chambre 111. La manchette 131 présente une caractéristique de déformation par étirage de sorte que la longueur ou hauteur de la manchette peut varier considérablement. En outre, la manchette présente également des caractéristiques de déformabilité radiale vers l'intérieur et vers l'extérieur. Plus simplement, la manchette peut être assimilée à une section de tuyau élastiquement étirable de forme sensiblement cylindrique ou tronconique. Dans le cas représenté sur les figures, la manchette présente une forme légèrement tronconique : en effet, la section de la manchette au niveau de son extrémité supérieure 132 est légèrement supérieure à celle au niveau de son extrémité inférieure 133. La manchette 131 et le piston 135 n'ont pas besoin de venir en contact étanche à l'intérieur du fût de chambre 111. En effet, un écart peut subsister entre le piston et le fût. Du fait que la manchette 131 s'étend à l'intérieur du manchon de support 124, sa paroi externe 130 est amenée à venir en contact périphérique avec le cordon 125. Selon l'invention, ce contact est étanche. Ainsi, le fût de chambre 111, la partie inférieure du manchon 124 qui s'étend à partir du cordon 125, la partie inférieure de la manchette 131, le piston 135 et l'organe mobile 15 du clapet d'entrée forment ensemble une chambre de distribution 10 de volume variable. Le déplacement du piston 135 dans le fût 111 en étirant plus ou moins la manchette 131 fait varier le volume interne de la chambre de distribution 10.The piece of elastic material 13 comprises an anchor ring 136, an elastically stretchable sleeve 131 and a piston 135. The piece of elastic material 13 is made integrally. The anchor ring 136 engages on the upper part of the support sleeve 124. The ring 126 can form a lip which extends between the sleeve 123 and the sleeve 124. The anchoring ring 136 is thus integral with the The sleeve 131 comprises an upper end 132 connected to the ring gear 136 and a lower end 133 connected to the piston 135. The sleeve 131 extends inside the sleeve 124 and the chamber shaft 111 and the piston 135 is located inside the chamber shaft 111. The sleeve 131 has a stretch deformation characteristic so that the length or height of the sleeve can vary considerably. In addition, the sleeve also has radially deformable inward and outward characteristics. More simply, the sleeve can be likened to a section of elastically stretchable pipe of substantially cylindrical or frustoconical shape. In the case shown in the figures, the sleeve has a slightly frustoconical shape: in fact, the section of the sleeve at its upper end 132 is slightly greater than that at its lower end 133. The sleeve 131 and the piston 135 do not need to come into sealed contact inside the chamber shaft 111. Indeed, a gap may remain between the piston and the barrel. Because the sleeve 131 extends inside the support sleeve 124, its outer wall 130 is brought into peripheral contact with the cord 125. According to the invention, this contact is sealed. Thus, the barrel 111, the lower portion of the sleeve 124 extending from the cord 125, the lower portion of the sleeve 131, the piston 135 and the movable member 15 of the inlet valve together form a chamber distribution 10 of variable volume. The displacement of the piston 135 in the barrel 111 by more or less stretching the sleeve 131 varies the internal volume of the distribution chamber 10.

Pour permettre le déplacement du piston 135, l'organe de distribution comprend un poussoir 14 formant une surface d'appui 141 bordée par une jupe de retenue 144 en prise autour de la douille de guidage 123. Le poussoir 14 comprend également une tige d'actionnement 142 qui est en prise avec le piston 135. On comprend aisément qu'en appuyant sur la surface d'appui 141 du poussoir 14, la tige 142 est enfoncée dans la manchette ce qui a pour effet de déplacer le piston 135 vers le clapet d'entrée. La manchette subit alors une déformation par étirage élastique et sa paroi externe 130 coulisse de manière étanche contre le cordon périphérique externe 125. Dès que la pression à l'intérieur de la chambre de distribution 10 dépasse un certain seuil, la manchette, qui bien que déjà étirée élastiquement, va se déformer radialement vers l'intérieur en se décollant du cordon 125. Ceci a pour effet de dégager un passage de sortie pour le produit fluide sous pression qui peut ensuite s'écouler à travers la fente 124' et le canal de sortie 129 pour rejoindre l'orifice de distribution 127. Dès que la pression retombe en dessous de ce seuil, la paroi externe 130 de la manchette revient en contact étanche contre le cordon 125. Le cordon 125 remplit par conséquent une fonction de siège de clapet de sortie, et la paroi externe de la manchette remplit une fonction d'organe mobile de clapet de sortie destiné à venir en contact étanche sélectif. Il faut toutefois noter que le contact de la paroi externe 130 de la manchette est un contact dynamique puisque coulissant. En effet, au début de la phase d'actionnement, le piston 135 se déplace ce qui a pour effet d'étirer la manchette 131. La paroi externe 130 se déplace alors en contact étanche sur ou à l'intérieur du cordon 125.To enable movement of the piston 135, the dispensing member comprises a pusher 14 forming a bearing surface 141 bordered by a retaining skirt 144 engaged around the guide sleeve 123. The pusher 14 also comprises a rod actuation 142 which is engaged with the piston 135. It is easily understood that by pressing on the bearing surface 141 of the pusher 14, the rod 142 is pressed into the sleeve which has the effect of moving the piston 135 towards the valve input. The sleeve is then deformed by elastic stretching and its outer wall 130 slides sealingly against the outer peripheral bead 125. As soon as the pressure inside the distribution chamber 10 exceeds a certain threshold, the cuff, which although already stretched elastically, will deform radially inwardly by peeling off the bead 125. This has the effect of clearing an outlet passage for the fluid under pressure which can then flow through the slot 124 'and the channel at the outlet 129 to reach the dispensing orifice 127. As soon as the pressure falls below this threshold, the outer wall 130 of the sleeve returns in sealing contact against the cord 125. The cord 125 thus fulfills an outlet valve seat function, and the outer wall of the sleeve performs a function of movable outlet valve member for selective sealing engagement. It should however be noted that the contact of the outer wall 130 of the sleeve is a dynamic contact since sliding. Indeed, at the beginning of the actuation phase, the piston 135 moves which has the effect of stretching the sleeve 131. The outer wall 130 then moves in sealing contact on or inside the cord 125.

Avec l'invention, un même et unique élément, à savoir la manchette 131, définit, forme ou est formé par une zone remplissant à la fois la fonction de ressort de rappel et d'organe mobile de clapet de sortie. De plus, la disposition de la manchette à l'intérieur du siège permet de réaliser un distributeur dont l'orifice de distribution est fixe par rapport au réservoir. En effet, le déplacement du poussoir 14 est totalement indépendant de l'orifice de distribution. Le siège de clapet de sortie définit un point d'étranglement relatif de la manchette au niveau duquel la ligne droite fictive séparant l'extrémité supérieure et l'extrémité inférieure de la manchette est cassée. De cette manière, le contact étanche de la paroi externe 130 de la manchette sur le cordon de siège 125 s'effectue avec une force d'appui toujours croissante à mesure que l'on enfonce le poussoir 14. En d'autre terme, plus on appuie sur le poussoir 14 et plus la manchette appuie contre le siège. Le contact entre la manchette et le siège est toutefois rompu lorsque la pression atteint une valeur suffisante à l'intérieur de la chambre de distribution 10. Ceci permet cependant de créer une sorte de force de précompression qui permet de durcir l'actionnement du distributeur. La manchette 131 s'étend ici de manière sensiblement rectiligne ou droite. On peut toutefois imaginer des modes de réalisation dans lesquels le siège de clapet de sortie 125 forme un étranglement plus important, de sorte que la manchette peut présenter une forme de X ou de Y. Plus le siège étrangle la manchette et plus la pression seuil d'ouverture du clapet de sortie est importante.With the invention, the same and unique element, namely the sleeve 131, defines, forms or is formed by a zone filling both the function of return spring and movable member of the outlet valve. In addition, the arrangement of the sleeve inside the seat allows for a dispenser whose dispensing orifice is fixed relative to the reservoir. Indeed, the displacement of the pusher 14 is completely independent of the dispensing orifice. The outlet valve seat defines a relative throttle point of the sleeve at which the dummy straight line separating the upper end and the lower end of the sleeve is broken. In this way, the sealing contact of the outer wall 130 of the sleeve on the seat cord 125 is effected with a constantly increasing support force as the push-button 14 is depressed. In other words, more pressing the pusher 14 and the cuff presses against the seat. The contact between the sleeve and the seat is, however, broken when the pressure reaches a sufficient value inside the distribution chamber 10. However, this allows to create a kind of precompression force that hardens the actuation of the dispenser. The sleeve 131 here extends substantially rectilinear or straight. However, it is possible to imagine embodiments in which the outlet valve seat 125 forms a larger throttle, so that the sleeve may have a shape of X or Y. The more the seat throttles the cuff and the pressure threshold more opening of the outlet valve is important.

Un distributeur selon une forme de réalisation non représentée peut comprendre un élément déformable par flexion ou compression qui remplit à la fois les fonctions de ressort et de clapet de sortie au niveau d'une seule zone.A dispenser according to an embodiment not shown may comprise a deformable member by bending or compression which fills both the functions of spring and outlet valve at a single zone.

Grâce à l'invention, on obtient un organe de distribution constitué d'un nombre réduit de pièces facilement moulables, ce qui permet de réduire les coûts de fabrication.Thanks to the invention, there is obtained a dispensing member consisting of a small number of easily moldable parts, which reduces the manufacturing costs.

Claims (11)

  1. A device for the dispensing of a fluid product (1) intended to be mounted on a fluid-product reservoir (20) in order to draw off the fluid product, where the said dispensing device includes a fluid-product dispensing chamber (10) of variable volume, and where the said chamber includes:
    - an intake valve (15, 115) by which the chamber (10) is intended to be put into fluid communication with the reservoir (20), where the said valve includes a seat (115) and a movable device (15),
    - a piston (135) that can be moved by pressing on a push-rod (14) in order to vary the volume of the chamber (10) and thus to put the fluid product contained in the chamber under pressure, where the said piston (135) is held in its rest position through return spring means (131), and
    - an outlet valve (131, 125) by which the fluid product under pressure exits from the chamber (10) in order to flow to a dispensing orifice (127), where the said valve includes a valve seat (125) and a movable valve device (131) capable of moving into and out of sealed contact with the said seat, characterized in that the return spring and the movable device of the outlet valve are formed from one single element (131) which is deformable by elastic extension, the element (131) including a wall (130) that is in sealed contact with the seat (125), the seat (125) being annular, wherein the element (131) slides in a sealed manner inside the seat.
  2. A dispensing device according to claim 1, in which the element is formed by a sleeve (131) which is elastically stretchable, more or less cylindrical and elastically deformable inwards.
  3. A dispensing device according to claim 2, in which the sleeve (131) includes an outer wall (130) designed to make sliding sealed contact with a peripheral annular seat (125) surrounding the sleeve.
  4. A dispensing device according to claims 2 or 3, in which the sleeve (131) is formed as a single block piece (13), also forming the piston (135) and anchoring means (136).
  5. A dispensing device according to claims 2, 3 or 4, in which the sleeve (131) comes into contact, pressing with increasing force on the seat (125) as it is increasingly stretched.
  6. A dispensing device according to any of the preceding claims, in which the element (131) includes a fixed end (132) attached to anchoring means (136) and a movable end (133), where the piston (135) is attached to the movable end (133).
  7. A dispensing device according to claim 6, in which the piston (135) and the element (131) are manufactured as a single block piece.
  8. A device according to any of the preceding claims, in which the seat (125) of the outlet valve is fixed in relation to the seat (115) of the intake valve.
  9. A device according to any of the preceding claims, in which the seat (125) of the outlet valve is movable in relation to the push-rod.
  10. A device according to any of the preceding claims, in which the dispensing orifice is fixed in relation to the seat (115) of the intake valve and the reservoir.
  11. A fluid-product dispenser including a fluid-product reservoir (20) and dispensing device (1) according to any of claims 1 to 10.
EP04719490A 2003-03-13 2004-03-11 Fluid product distribution body and fluid product distributor comprising such a body Expired - Fee Related EP1606063B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0303134A FR2852302B1 (en) 2003-03-13 2003-03-13 FLUID PRODUCT DISPENSING MEMBER AND FLUID PRODUCT DISPENSING DEVICE COMPRISING SUCH AN ORGAN
FR0303134 2003-03-13
PCT/FR2004/000580 WO2004082356A2 (en) 2003-03-13 2004-03-11 Fluid product distribution body and fluid product distributor comprising such a body

Publications (2)

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EP1606063A2 EP1606063A2 (en) 2005-12-21
EP1606063B1 true EP1606063B1 (en) 2006-07-26

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EP (1) EP1606063B1 (en)
JP (1) JP2006522266A (en)
CN (1) CN1774303A (en)
BR (1) BRPI0408336A (en)
DE (1) DE602004001680T2 (en)
ES (1) ES2270362T3 (en)
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WO (1) WO2004082356A2 (en)

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WO2004082356A2 (en) 2004-09-30
FR2852302B1 (en) 2006-07-14
CN1774303A (en) 2006-05-17
BRPI0408336A (en) 2006-03-21
ES2270362T3 (en) 2007-04-01
FR2852302A1 (en) 2004-09-17
DE602004001680T2 (en) 2007-08-09
US20060255071A1 (en) 2006-11-16
WO2004082356A3 (en) 2004-10-28
JP2006522266A (en) 2006-09-28
DE602004001680D1 (en) 2006-09-07
EP1606063A2 (en) 2005-12-21

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