EP3417948A1 - Moulded pump for dispensing a fluid product - Google Patents

Moulded pump for dispensing a fluid product Download PDF

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Publication number
EP3417948A1
EP3417948A1 EP18175550.5A EP18175550A EP3417948A1 EP 3417948 A1 EP3417948 A1 EP 3417948A1 EP 18175550 A EP18175550 A EP 18175550A EP 3417948 A1 EP3417948 A1 EP 3417948A1
Authority
EP
European Patent Office
Prior art keywords
membrane
pump
pump according
cap
metering chamber
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
EP18175550.5A
Other languages
German (de)
French (fr)
Other versions
EP3417948B1 (en
Inventor
Emir EZZINA
Eric Rossignol
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.)
Albea Services SAS
Original Assignee
Albea Services SAS
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Filing date
Publication date
Application filed by Albea Services SAS filed Critical Albea Services SAS
Publication of EP3417948A1 publication Critical patent/EP3417948A1/en
Application granted granted Critical
Publication of EP3417948B1 publication Critical patent/EP3417948B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—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
    • B05B11/026—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container
    • B05B11/027—Membranes separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container inverted during outflow of content
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1032—Pumps having a pumping chamber with a deformable wall 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1045—Sealing or attachment arrangements between pump and container the pump being preassembled as an independent unit before being mounted on the container
    • 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
    • B05B11/1052—Actuation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • B05B11/1097—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 with means for sucking back the liquid or other fluent material in the nozzle after a dispensing 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
    • B05B11/1059—Means for locking a pump or its actuation means in a fixed position

Definitions

  • the invention relates to a pump for dispensing a fluid product and a method for manufacturing such a pump.
  • a pump configured to suck the cosmetic product contained in the tank of the bottle to distribute it, for example by means of a nozzle or by a simple opening.
  • the product can be extracted or sprayed from the bottle to allow its application.
  • the pump is often operated by means of a push button on which the user exerts a pressure to trigger the operation of the pump.
  • a pump comprises a metering chamber whose volume varies to allow the product to be drawn into the chamber through an inlet orifice, when the volume increases, and then expelled outside the chamber through an outlet orifice, when the volume of the chamber decreases.
  • the product leaves the chamber in a distribution conduit, which leads to the opening or the nozzle usually arranged on the push button.
  • pumps are known, each having particular characteristics, in order to function specifically, either with low-viscosity liquid products, or with viscous liquid products, such as creams or foams.
  • pumps whose chamber is formed by a rigid body and a piston that closes the chamber, and whose movement in the body reduces or increases the volume of the chamber.
  • the displacement of the piston is generally controlled by actuating the push-button.
  • Such a pump is often used for liquid products to vaporize.
  • These flexible membrane pumps are generally composed of an assembly of several parts, some of which can be molded. There are thus two or three piece pumps requiring assembly of the post molding components by an additional machine and / or in the mold.
  • the object of the present invention is to provide a pump dispenser dispenser device as simple as possible with a minimum of components to reduce production costs and the manufacturing time.
  • the objective is to produce a ready-to-use pump directly at the exit of the molding stage, and which can be assembled afterwards on a flexible tube with the head down, as on a rigid container of a bottle .
  • This pump is characterized primarily in that it consists of a single molded part.
  • the main idea of this invention is to design a pump in one injection molded component. There is therefore no post-molding assembly operations. A single mold makes it possible to obtain this pump and thus limits the investment costs.
  • This pump is intended to dispense a cream or a fluid more or less fluid. It does not include metal parts such as spring or ball. This pump has a shape that can be integrated on different supports such as tube, bottle, bottle, etc.
  • This method thus makes it possible to close the part before its total ejection out of the mold. Once the part is ejected, there is no assembly step. The pump is ready for use.
  • the invention relates to a pump molded in one piece, as visible on the figure 1 for example.
  • This piece is broken down into a first part, namely a body 1, and a second part, namely a cap 2, the body 1 and the cap 2 being connected by a hinge-film 3. All these elements are obtained in a one and only mold.
  • the pump is open, which means that the cap 2 is deployed relative to the body 1.
  • the cap 2 is folded over the body 1 by folding the film hinge 3 so as to close the pump.
  • the pump thus closed can be demolded.
  • the cap 2 constitutes the upper part of the pump, and the body 1 constitutes the lower part of the pump.
  • the cap 2 has a push button on which the user can press to operate the pump. A dose of product then exits via a tip 12, when the pump is mounted on a container filled with product to be dispensed.
  • the push button consists of a deformable membrane 4 on which the user can press.
  • This membrane 4 partially defines a metering chamber 21 containing a dose of product to be delivered.
  • the pump operates by varying the volume of this metering chamber 21 by elastic deformation of the membrane between an initial state represented on the Figures 4, 5 , 9 , 11, 14 wherein the chamber 21 has a maximum volume and a distorted state shown on the Figures 7, 8 , 12 wherein the volume of the chamber 21 is minimal, resulting in the expulsion of the dose of product through the tip 12.
  • the membrane 4 has a central X axis of symmetry.
  • a control rod 5 extends orthogonally from the membrane 4, along the axis X, and towards the body 1 when the cap 2 is positioned on the body 1.
  • the control rod 5 is extends from the inner surface of the membrane 4, while the outer surface of the membrane 4 serves as a bearing surface for the user. The function of this control rod 5 will be explained later in the description.
  • the body 1 consists of a piece of revolution, having a peripheral wall 9, serving as a rigid structure.
  • the lower part of the peripheral wall 9 is intended to be placed on a container.
  • a bulge 17 circumferential is formed on the inner surface of the peripheral wall 9. This bulge 17 allows for example an elastic interlocking of the pump on the container.
  • the peripheral wall 9 of the body 1 defines an upper opening closed at least in part by a support 7. This support 7 and the membrane 4 together define the metering chamber 21.
  • This support 7 is carried by a deformable frustoconical zone 6.
  • This frustoconical zone 6 surrounds the support 7.
  • a hole 8 is formed in the center of this support 7 for the passage of the control rod 5.
  • a chimney 10 directed towards the inside of the body 1 increases the depth of the hole 8 and thus makes it possible to better guide the control rod 5 in rectilinear translation.
  • the free end of the control rod 5 is provided with a stop 11 adapted to come into contact with the free end of the chimney 10 so as to limit the translational movement of the control rod 5. The latter is mounted slightly tight in the chimney 10.
  • the support 7 consists of a flat circular plate protruding from a disc 23 via the frustoconical zone 6.
  • the disc 23 completely closes the upper opening delimited by the peripheral wall 9 of the body 1.
  • the membrane 4 to it consists of a dome in the initial state, whose summit is directed towards the outside of the pump. When the user presses on the dome, the latter deforms so as to form a bowl, the bottom of which comes into contact with the support 7.
  • the cap 2 has a flat upper surface from which the dome. This dome is off center with respect to the central axis of the upper surface 20.
  • the support 7 consists of a bowl directed towards the inside of the body 1.
  • the bowl itself completely closes the upper opening delimited by the peripheral wall 9 of the body 1.
  • the membrane 4 as for it consists of a flat disc in the initial state. When the user presses on the disk, the latter deforms so as to form a bowl that approaches the support 7. In this embodiment, the membrane 4 forms the entire upper surface of the cap 2.
  • the disc 23 of the body 1 has a recess 16, the inlet orifice 14 being formed in one of the walls of this recess 16.
  • the tongue 15 enters this recess 16 and is pressed on the wall in which the orifice 14 is, so as to cover it.
  • the admission orifice 14 is made directly in the support 7.
  • the tongues 15a, 15b have different lengths so as to adapt to the location of the intake orifices 14a, 14b on the support 7.
  • the frustoconical zone 6 elastically closes the exhaust port 13, in an initial state where the support 7 is raised.
  • the frustoconical zone 6 is deformed and opens the exhaust port 13.
  • the upper part of the peripheral wall 9 of the body 1 has a shoulder 18 on which is positioned a peripheral wall 19 of the cap 2.
  • a circumferential groove is formed in the upper end of the peripheral wall 9 of the body 1, and accommodates a circumferential bead provided for this purpose in the peripheral wall 19 of the cap 2, so as to ensure an elastic interlocking between the body 1 and the cap 2. This interlocking also makes it possible to seal between the body 1 and the cap 2.
  • the cap 2 has a rigid annular flange 22 surrounding the flat membrane 4 so as to prevent any accidental actuation of the pump by pressing on a peripheral zone of said flat membrane 4.
  • the support is exerted on the rigid edges 22 when the bottle is placed upside down on a support. The support can not cause accidental actuation of the pump in this position.
  • This rim 22 thus consists of a geometrical protection against the uncontrolled actuation of the pump. It is made of polypropylene preferably.
  • the various elements constituting the pump are either flexible or rigid.
  • the membrane 4, the frustoconical zone 6, the film hinge 3, the tongues 15, 15a, 15b are made of a flexible and elastic material of the thermoplastic elastomer (TPE) type.
  • the other elements are made of a rigid material.
  • the molding of the pump is thus made by bi-injection of a flexible material and a rigid material into a single mold to form the single piece.
  • the pump is in the rest position.
  • the pump is sealed, the cap 2 being fitted on the body 1.
  • the membrane 4 is in its initial state, domed and the rod 5 is in the raised position.
  • the elastic reaction of the prestressed dome 4 tends to pull on the control rod 5.
  • the stop 11 of the control rod 5 is in contact with the chimney 10 and tends to lift the support 7 and the frustoconical zone 6. This frustoconical zone 6 then obstructs the exhaust port 13.
  • the inlet port 14 is closed by the tongue 15.
  • the metering chamber 21 is filled with a dose of product to be dispensed.
  • the pressure inside the chamber 21 is identical to the pressure outside the chamber, and the tongue 15 is pressed onto the seat of the inlet orifice 14 by simple elastic effect. The closing of the intake valve is thus sealed.
  • the pump is returned to its idle state.
  • the elastic reaction of the prestressed dome 4 during the assembly of the system allows the veneering of the frustoconical zone 6 on the exhaust port 13.
  • the metering chamber 21 is thus hermetically sealed.
  • the depression having fallen, the tongue 15 of the intake valve, by the intrinsic elasticity of the flexible material in which it is designed, is replicated on the inlet port 14. The next dose is ready to be delivered.
  • the pump operates in a manner similar to that described above, with the difference that the membrane 4 is flat in its initial prestressed state, and that it takes a cup shape when a pressure is exerted on her.

Landscapes

  • Reciprocating Pumps (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)

Abstract

Pompe de distribution d'un produit fluidique apte à être montée sur un contenant du type tube flexible ou flacon rigide, comportant
- une chambre de dosage 21 à volume variable définie au moins en partie par une membrane 4 déformable entre un état initial dans lequel le volume de la chambre de dosage 21 est maximal et un état déformé dans lequel le volume de la chambre de dosage 21 est minimal ;
- un clapet d'admission du produit fluidique vers la chambre de dosage 21 ;
- un clapet d'échappement du produit fluidique depuis la chambre de dosage 21 ;
- des moyens d'ouverture et de fermeture des clapets d'admission et d'échappement.
Cette pompe se caractérise en ce qu'elle consiste en une unique pièce moulée.

Figure imgaf001
Pump for dispensing a fluidic product that can be mounted on a container of the flexible tube or rigid bottle type, comprising
a variable volume dosing chamber 21 defined at least in part by a deformable membrane 4 between an initial state in which the volume of the metering chamber 21 is maximum and a deformed state in which the volume of the metering chamber 21 is minimal;
a valve for admitting the fluid product to the metering chamber 21;
an outlet valve for the fluid product from the metering chamber 21;
- Opening and closing means of the intake and exhaust valves.
This pump is characterized in that it consists of a single molded part.
Figure imgaf001

Description

Domaine de l'inventionField of the invention

L'invention concerne une pompe de distribution d'un produit fluidique ainsi qu'un procédé de fabrication d'une telle pompe.The invention relates to a pump for dispensing a fluid product and a method for manufacturing such a pump.

Etat de la techniqueState of the art

Certains flacons de produits cosmétiques sont pourvus d'une pompe configurée pour aspirer le produit cosmétique contenu dans le réservoir du flacon afin de le distribuer, par exemple au moyen d'une buse ou par une simple ouverture. Le produit peut ainsi être extrait ou pulvérisé du flacon afin de permettre son application. La pompe est souvent actionnée au moyen d'un bouton-poussoir sur lequel l'utilisateur exerce une pression pour déclencher le fonctionnement de la pompe. Une pompe comprend en particulier une chambre de dosage dont le volume varie pour permettre l'aspiration du produit dans la chambre par un orifice d'entrée, lorsque le volume augmente, puis son expulsion en dehors de la chambre par un orifice de sortie, lorsque le volume de la chambre diminue. Le produit sort de la chambre dans un conduit de distribution, qui le mène à l'ouverture ou la buse habituellement agencée sur le bouton-poussoir.Some bottles of cosmetic products are provided with a pump configured to suck the cosmetic product contained in the tank of the bottle to distribute it, for example by means of a nozzle or by a simple opening. The product can be extracted or sprayed from the bottle to allow its application. The pump is often operated by means of a push button on which the user exerts a pressure to trigger the operation of the pump. In particular, a pump comprises a metering chamber whose volume varies to allow the product to be drawn into the chamber through an inlet orifice, when the volume increases, and then expelled outside the chamber through an outlet orifice, when the volume of the chamber decreases. The product leaves the chamber in a distribution conduit, which leads to the opening or the nozzle usually arranged on the push button.

On connait différentes sortes de pompes, ayant chacune des caractéristiques particulières, afin de fonctionner spécifiquement, soit avec des produits liquides peu visqueux, ou bien avec des produits liquides visqueux, telles des crèmes ou des mousses. Ainsi, il existe des pompes dont la chambre est formée par un corps rigide et d'un piston qui ferme la chambre, et dont le déplacement dans le corps réduit ou augmente le volume de la chambre. Le déplacement du piston est en général contrôlé en actionnant le bouton-poussoir. Une telle pompe sert souvent pour des produits liquides à vaporiser.Different types of pumps are known, each having particular characteristics, in order to function specifically, either with low-viscosity liquid products, or with viscous liquid products, such as creams or foams. Thus, there are pumps whose chamber is formed by a rigid body and a piston that closes the chamber, and whose movement in the body reduces or increases the volume of the chamber. The displacement of the piston is generally controlled by actuating the push-button. Such a pump is often used for liquid products to vaporize.

Il existe d'autres pompes pour produit plus visqueux, dont la chambre est définie en grande partie par une membrane flexible. Le volume de la chambre est contrôlé par déformation de la membrane. En configuration non déformée de la membrane, le volume de la chambre est maximal. Lorsque la membrane est déformée, le volume de la chambre diminue, de préférence jusqu'à un volume assez faible pour qu'un maximum de produit sorte de la chambre. De telles pompes ont en outre l'avantage d'éviter d'avoir recourt à un ressort en métal, les éléments de la pompe étant en matériau plastique.There are other more viscous product pumps, whose chamber is largely defined by a flexible membrane. The volume of the chamber is controlled by deformation of the membrane. In undistorted configuration of the membrane, the volume of the chamber is maximum. When the membrane is deformed, the volume of the chamber decreases, preferably to a volume low enough to a maximum of product leaves the room. Such pumps also have the advantage of avoiding having recourse to a metal spring, the elements of the pump being made of plastic material.

Ces pompes à membrane flexible sont généralement composées d'un assemblage de plusieurs pièces dont certaines d'entre elles peuvent être moulées. Il existe ainsi des pompes en 2 ou 3 pièces nécessitant un assemblage des composants post moulage par une machine supplémentaire et/ou dans le moule.These flexible membrane pumps are generally composed of an assembly of several parts, some of which can be molded. There are thus two or three piece pumps requiring assembly of the post molding components by an additional machine and / or in the mold.

Résumé de l'inventionSummary of the invention

L'objectif de la présente invention est de proposer un dispositif de distribution doseur de type pompe le plus simple possible avec un minimum de composants afin de réduire les coûts de production ainsi que le temps de fabrication. L'objectif est de produire une pompe prête à emploi directement en sortie de l'étape de moulage, et qui puisse aussi bien être assemblée par la suite sur un tube souple avec la tête en bas, que sur un contenant rigide d'un flacon.The object of the present invention is to provide a pump dispenser dispenser device as simple as possible with a minimum of components to reduce production costs and the manufacturing time. The objective is to produce a ready-to-use pump directly at the exit of the molding stage, and which can be assembled afterwards on a flexible tube with the head down, as on a rigid container of a bottle .

L'invention se rapporte ainsi à une pompe de distribution d'un produit fluidique apte à être montée sur un contenant du type tube flexible ou flacon rigide, comportant :

  • une chambre de dosage à volume variable définie au moins en partie par une membrane déformable entre un état initial dans lequel le volume de la chambre de dosage est maximal et un état déformé dans lequel le volume de la chambre de dosage est minimal ;
  • un clapet d'admission du produit fluidique vers la chambre de dosage ;
  • un clapet d'échappement du produit fluidique depuis la chambre de dosage ;
  • des moyens d'ouverture et de fermeture des clapets d'admission et d'échappement.
The invention thus relates to a dispensing pump for a fluidic product that can be mounted on a container of the flexible tube or rigid bottle type, comprising:
  • a variable volume dosing chamber defined at least in part by a deformable membrane between an initial state in which the volume of the dosing chamber is at a maximum and a deformed state in which the volume of the dosing chamber is minimal;
  • a valve for admitting the fluid product to the metering chamber;
  • an outlet valve of the fluid product from the metering chamber;
  • means for opening and closing the intake and exhaust valves.

Cette pompe se caractérise à titre principal en ce qu'elle consiste en une unique pièce moulée.This pump is characterized primarily in that it consists of a single molded part.

L'idée principale de cette invention consiste à concevoir une pompe en un seul composant moulé par injection. Il n'y a donc pas d'opérations d'assemblage post moulage. Un unique moule permet l'obtention de cette pompe et limite ainsi les coûts d'investissement.The main idea of this invention is to design a pump in one injection molded component. There is therefore no post-molding assembly operations. A single mold makes it possible to obtain this pump and thus limits the investment costs.

Cette pompe est destinée à distribuer une crème ou un liquide plus ou moins fluide. Elle ne comporte pas de pièces métalliques telles que ressort ou bille. Cette pompe présente une forme pouvant s'intégrer sur différents supports de type tube, bouteille, flacon, etc.This pump is intended to dispense a cream or a fluid more or less fluid. It does not include metal parts such as spring or ball. This pump has a shape that can be integrated on different supports such as tube, bottle, bottle, etc.

Selon les différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • ladite pièce est constituée d'une première matière souple et d'une seconde matière rigide : il s'agit donc d'un moulage par bi-injection. La matière souple permet d'offrir une élasticité à la chambre de dosage. La matière rigide forme la structure porteuse de la pièce.
  • ladite pièce est constituée de deux parties, respectivement un corps et une casquette, reliées par une articulation du type charnière-film : le moule prévoit donc un emplacement pour le corps, un emplacement pour la casquette, et une zone intermédiaire pour la charnière-film reliant le corps et la casquette. Lors du moulage, la pompe est ouverte. Lorsque les éléments sont encore dans le moule, la casquette est rabattue sur le corps par le pliage de la charnière film. La pompe ainsi fermée peut être éjectée hors du moule. Elle est prête à emploi.
  • la casquette comporte :
    • ∘ ladite membrane déformable présentant un axe central X ;
    • ∘ une tige de commande s'étendant orthogonalement selon l'axe X depuis la membrane en direction du corps lorsque la casquette est positionnée sur le corps;
    • ∘ des moyens de fermeture et d'ouverture du clapet d'admission ;
    • ∘ un orifice d'échappement du clapet d'échappement.
  • le corps comporte :
    • ∘ une structure rigide apte à être fixée sur un contenant ;
    • ∘ un orifice d'admission du clapet d'admission ;
    • ∘ les moyens d'ouverture et de fermeture du clapet d'échappement ;
    • ∘ un support dans lequel est pratiqué un trou destiné à accueillir ladite tige de commande de la pompe.
  • les moyens de fermeture et d'ouverture du clapet d'admission consistent en une langue souple venant fermer élastiquement l'orifice d'admission.
  • la langue souple s'écarte de l'orifice d'admission sous l'effet de la dépression dans la chambre de dosage lors du retour entre l'état déformé et l'état initial de la membrane.
  • la tige de commande est mobile en translation selon l'axe X entre une position relevée où la membrane est dans son état initial, et une position enfoncée où la membrane est dans son état déformé, l'activation de la tige de commande s'effectue suite à une pression exercée sur la membrane pour la passer de son état initial à son état déformé.
  • les moyens de fermeture et d'ouverture du clapet d'échappement consistent en une zone tronconique souple venant fermer élastiquement l'orifice d'échappement et s'étendant autour du support.
  • la tige de commande est montée serrée dans le trou du support et le mouvement de translation de la tige entre la position relevée et la position enfoncée entraîne une déformation de la zone tronconique de manière à ouvrir l'orifice d'échappement dès le début de la déformation de la membrane, et le retour de la tige dans sa position relevée entraîne la remise en place de la zone tronconique de manière à fermer l'orifice d'échappement.
  • le support comporte une cheminée délimitant le trou accueillant la tige de commande, ladite tige comportant une extrémité libre dotée d'une butée apte à venir au contact de la cheminée.
  • dans l'état initial de la membrane, la butée de la tige exerce une force sur la cheminée du support pour le maintien en place de la zone tronconique de manière à fermer l'orifice d'échappement.
  • le retour entre l'état déformé et l'état initial de la membrane s'effectue par réaction élastique de la membrane.
  • la pompe comporte des moyens de protection géométrique contre l'actionnement non contrôlé de la pompe : il peut s'agir par exemple d'un rebord rigide qui protège l'actionnement accidentel de la pompe.
According to the different embodiments of the invention, which can be taken together or separately:
  • said part consists of a first flexible material and a second rigid material: it is therefore a bi-injection molding. The flexible material provides elasticity to the metering chamber. The rigid material forms the supporting structure of the piece.
  • said part consists of two parts, respectively a body and a cap, connected by a joint of the hinge-film type: the mold therefore provides a location for the body, a location for the cap, and an intermediate zone for the hinge-film connecting the body and the cap. During molding, the pump is open. When the elements are still in the mold, the cap is folded over the body by folding the hinge film. The pump thus closed can be ejected from the mold. She is ready for use.
  • the cap includes:
    • Said deformable membrane having a central axis X;
    • A control rod extending orthogonally along the X axis from the membrane towards the body when the cap is positioned on the body;
    • ∘ means for closing and opening the inlet valve;
    • ∘ an exhaust port of the exhaust valve.
  • the body comprises:
    • ∘ a rigid structure adapted to be fixed on a container;
    • ∘ an admission port of the intake valve;
    • ∘ the opening and closing means of the exhaust valve;
    • ∘ a support in which is made a hole for accommodating said control rod of the pump.
  • the means for closing and opening the inlet valve consist of a flexible tongue elastically closing the inlet orifice.
  • the flexible tongue deviates from the inlet orifice under the effect of the depression in the metering chamber during the return between the deformed state and the initial state of the membrane.
  • the control rod is movable in translation along the X axis between a raised position where the membrane is in its initial state, and a depressed position where the membrane is in its deformed state, the activation of the control rod is carried out following a pressure exerted on the membrane to move from its initial state to its deformed state.
  • the means for closing and opening the exhaust valve consist of a flexible frustoconical zone which elastically closes the exhaust orifice and extends around the support.
  • the control rod is mounted tightly in the hole of the support and the translation movement of the rod between the raised position and the depressed position causes a deformation of the frustoconical zone so as to open the exhaust orifice from the beginning of the deformation of the membrane, and the return of the rod in its raised position causes the refitting of the frustoconical zone so as to close the exhaust port.
  • the support comprises a chimney defining the hole accommodating the control rod, said rod having a free end with a stop adapted to come into contact with the chimney.
  • in the initial state of the membrane, the stop of the rod exerts a force on the chimney of the support for holding in place the frustoconical zone so as to close the exhaust port.
  • the return between the deformed state and the initial state of the membrane is effected by elastic reaction of the membrane.
  • the pump comprises geometric protection means against the uncontrolled actuation of the pump: it may be for example a rigid flange which protects the accidental actuation of the pump.

L'invention concerne également un procédé de fabrication d'une pompe telle que décrite ci-dessus, et comportant les étapes suivantes :

  • moulage d'une seule pièce comportant deux parties principales, à savoir un corps et une casquette, reliées par une charnière-film ;
  • pliage de la charnière-film, dans le moule, de manière à positionner la casquette sur le corps et fermer la pompe ;
  • démoulage de la pompe fermée et prête à utilisation.
The invention also relates to a method of manufacturing a pump as described above, and comprising the following steps:
  • one-piece molding having two main parts, namely a body and a cap, connected by a film hinge;
  • folding the hinge-film in the mold so as to position the cap on the body and close the pump;
  • demolding the pump closed and ready for use.

Ce procédé permet ainsi de fermer la pièce avant son éjection totale hors du moule. Une fois que la pièce est éjectée, il n'y a plus aucune étape d'assemblage. La pompe est prête à emploi.This method thus makes it possible to close the part before its total ejection out of the mold. Once the part is ejected, there is no assembly step. The pump is ready for use.

Présentation des figuresPresentation of figures

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The invention will be better understood, and other objects, details, features and advantages thereof will become more clearly apparent in the following detailed explanatory description of at least one embodiment of the invention given to As a purely illustrative and non-limiting example, with reference to the accompanying schematic drawings.

Sur ces dessins :

  • la figure 1 est une vue en perspective d'une première configuration possible d'une pompe ouverte selon l'invention ;
  • la figure 2 est une vue en perspective de la pompe selon la figure 1, retournée selon un plan horizontal ;
  • la figure 3 est une vue en perspective et en coupe de la pompe selon la figure 1 ;
  • la figure 4 est une vue en perspective de la pompe fermée, toujours selon la première configuration ;
  • les figures 5 à 9 sont des vues en coupe qui montrent les différentes étapes d'actionnement de la pompe selon la première configuration ;
  • la figure 10 est une vue en coupe d'une pompe ouverte selon une seconde configuration possible de l'invention ;
  • la figure 11 illustre la pompe fermée selon la seconde configuration ;
  • la figure 12 montre l'actionnement de la pompe selon la seconde configuration ;
  • la figure 13 montre le relâchement de la pompe selon la seconde configuration ;
  • la figure 14 montre le retour de la pompe dans sa position fermée, et est identique à la figure 11.
On these drawings:
  • the figure 1 is a perspective view of a first possible configuration of an open pump according to the invention;
  • the figure 2 is a perspective view of the pump according to the figure 1 , turned on a horizontal plane;
  • the figure 3 is a perspective view in section of the pump according to the figure 1 ;
  • the figure 4 is a perspective view of the closed pump, still in the first configuration;
  • the Figures 5 to 9 are sectional views which show the different stages of actuation of the pump according to the first configuration;
  • the figure 10 is a sectional view of an open pump according to a second possible configuration of the invention;
  • the figure 11 illustrates the closed pump according to the second configuration;
  • the figure 12 shows the actuation of the pump according to the second configuration;
  • the figure 13 shows the release of the pump according to the second configuration;
  • the figure 14 shows the return of the pump in its closed position, and is identical to the figure 11 .

Description détailléedetailed description

Dans la description, les termes de positionnement dans l'espace sont pris en référence à la position droite de la pompe telle que représentée en particulier sur la figure 4 et la figure 11.In the description, the terms of positioning in space are taken with reference to the straight position of the pump as shown in particular on the figure 4 and the figure 11 .

Il est à noter que, sur les figures, les éléments structurels et/ou fonctionnels communs aux différents modes de réalisation peuvent présenter les mêmes références. Ainsi, sauf mention contraire, de tels éléments disposent de propriétés structurelles, dimensionnelles et matérielles identiques.It should be noted that, in the figures, the structural and / or functional elements common to the various embodiments may have the same references. Thus, unless otherwise stated, such elements have identical structural, dimensional and material properties.

L'invention concerne une pompe moulée en une seule pièce, comme visible sur la figure 1 par exemple. Cette pièce se décompose en une première partie, à savoir un corps 1, et en une seconde partie, à savoir une casquette 2, le corps 1 et la casquette 2 étant reliés par une charnière-film 3. Tous ces éléments sont obtenus dans un seul et unique moule.The invention relates to a pump molded in one piece, as visible on the figure 1 for example. This piece is broken down into a first part, namely a body 1, and a second part, namely a cap 2, the body 1 and the cap 2 being connected by a hinge-film 3. All these elements are obtained in a one and only mold.

Lors du moulage, la pompe est ouverte, ce qui signifie que la casquette 2 est déployée par rapport au corps 1. En fin de moulage, la casquette 2 est rabattue sur le corps 1 par le pliage de la charnière film 3 de manière à fermer la pompe. La pompe ainsi fermée peut être démoulée.During molding, the pump is open, which means that the cap 2 is deployed relative to the body 1. At the end of molding, the cap 2 is folded over the body 1 by folding the film hinge 3 so as to close the pump. The pump thus closed can be demolded.

La casquette 2 constitue la partie supérieure de la pompe, et le corps 1 constitue la partie inférieure de la pompe.The cap 2 constitutes the upper part of the pump, and the body 1 constitutes the lower part of the pump.

La casquette 2 comporte un bouton-poussoir sur lequel l'utilisateur peut appuyer pour actionner la pompe. Une dose de produit sort alors via un embout 12, lorsque la pompe est montée sur un contenant rempli de produit à distribuer.The cap 2 has a push button on which the user can press to operate the pump. A dose of product then exits via a tip 12, when the pump is mounted on a container filled with product to be dispensed.

De façon concrète, le bouton poussoir consiste en une membrane 4 déformable sur laquelle l'utilisateur peut appuyer. Cette membrane 4 définit en partie une chambre de dosage 21 contenant une dose de produit à délivrer. La pompe fonctionne en faisant varier le volume de cette chambre de dosage 21 par déformation élastique de la membrane entre un état initial représenté sur les figures 4, 5, 9, 11, 14 dans lequel la chambre 21 a un volume maximal et un état déformé représenté sur les figures 7, 8, 12 dans lequel le volume de la chambre 21 est minimal, entraînant l'expulsion de la dose de produit par l'embout 12.Concretely, the push button consists of a deformable membrane 4 on which the user can press. This membrane 4 partially defines a metering chamber 21 containing a dose of product to be delivered. The pump operates by varying the volume of this metering chamber 21 by elastic deformation of the membrane between an initial state represented on the Figures 4, 5 , 9 , 11, 14 wherein the chamber 21 has a maximum volume and a distorted state shown on the Figures 7, 8 , 12 wherein the volume of the chamber 21 is minimal, resulting in the expulsion of the dose of product through the tip 12.

La membrane 4 comporte un axe X central de symétrie. Une tige de commande 5 s'étend orthogonalement depuis la membrane 4, selon l'axe X, et en direction du corps 1 lorsque la casquette 2 est positionnée sur le corps 1. En d'autres termes, la tige de commande 5 s'étend depuis la surface intérieure de la membrane 4, tandis que la surface extérieure de la membrane 4 sert de surface d'appui pour l'utilisateur. La fonction de cette tige de commande 5 sera expliquée plus loin dans la description.The membrane 4 has a central X axis of symmetry. A control rod 5 extends orthogonally from the membrane 4, along the axis X, and towards the body 1 when the cap 2 is positioned on the body 1. In other words, the control rod 5 is extends from the inner surface of the membrane 4, while the outer surface of the membrane 4 serves as a bearing surface for the user. The function of this control rod 5 will be explained later in the description.

Le corps 1 consiste en une pièce de révolution, présentant une paroi périphérique 9, servant de structure rigide.The body 1 consists of a piece of revolution, having a peripheral wall 9, serving as a rigid structure.

La partie inférieure de la paroi périphérique 9 est destinée à être mise en place sur un contenant. Pour faciliter cette mise en place, un renflement 17 circonférentiel est pratiqué sur la surface intérieure de la paroi périphérique 9. Ce renflement 17 permet par exemple un emboîtement élastique de la pompe sur le contenant.The lower part of the peripheral wall 9 is intended to be placed on a container. To facilitate this implementation, a bulge 17 circumferential is formed on the inner surface of the peripheral wall 9. This bulge 17 allows for example an elastic interlocking of the pump on the container.

La paroi périphérique 9 du corps 1 définit une ouverture supérieure fermée au moins en partie par un support 7. Ce support 7 et la membrane 4 définissent ensemble la chambre de dosage 21.The peripheral wall 9 of the body 1 defines an upper opening closed at least in part by a support 7. This support 7 and the membrane 4 together define the metering chamber 21.

Ce support 7 est porté par une zone tronconique 6 déformable. Cette zone tronconique 6 entoure le support 7. Un trou 8 est pratiqué au centre de ce support 7 pour le passage de la tige de commande 5. Optionnellement, une cheminée 10 dirigée vers l'intérieur du corps 1 augmente la profondeur du trou 8 et permet ainsi de mieux guider la tige de commande 5 en translation rectiligne. L'extrémité libre de la tige de commande 5 est dotée d'une butée 11 apte à venir au contact de l'extrémité libre de la cheminée 10 de manière à limiter le mouvement de translation de la tige de commande 5. Cette dernière est montée légèrement serrée dans la cheminée 10.This support 7 is carried by a deformable frustoconical zone 6. This frustoconical zone 6 surrounds the support 7. A hole 8 is formed in the center of this support 7 for the passage of the control rod 5. Optionally, a chimney 10 directed towards the inside of the body 1 increases the depth of the hole 8 and thus makes it possible to better guide the control rod 5 in rectilinear translation. The free end of the control rod 5 is provided with a stop 11 adapted to come into contact with the free end of the chimney 10 so as to limit the translational movement of the control rod 5. The latter is mounted slightly tight in the chimney 10.

Dans le premier mode de réalisation illustré aux figures 1 à 9, le support 7 consiste en un plateau circulaire plat, saillant d'un disque 23 par l'intermédiaire de la zone tronconique 6. Le disque 23 ferme entièrement l'ouverture supérieure délimitée par la paroi périphérique 9 du corps 1. La membrane 4 quant à elle consiste en un dôme à l'état initial, dont le sommet est dirigé vers l'extérieur de la pompe. Lorsque l'utilisateur appuie sur le dôme, ce dernier se déforme de manière à former une cuvette, dont le fond vient en contact avec le support 7. Dans ce mode de réalisation, la casquette 2 comporte une surface supérieure 20 plane de laquelle saille le dôme. Ce dôme est décentré par rapport à l'axe central de la surface supérieure 20.In the first embodiment illustrated in Figures 1 to 9 the support 7 consists of a flat circular plate protruding from a disc 23 via the frustoconical zone 6. The disc 23 completely closes the upper opening delimited by the peripheral wall 9 of the body 1. The membrane 4 to it consists of a dome in the initial state, whose summit is directed towards the outside of the pump. When the user presses on the dome, the latter deforms so as to form a bowl, the bottom of which comes into contact with the support 7. In this embodiment, the cap 2 has a flat upper surface from which the dome. This dome is off center with respect to the central axis of the upper surface 20.

Dans le second mode de réalisation illustré aux figures 10 à 14, le support 7 consiste en une cuvette dirigée vers l'intérieur du corps 1. La cuvette en elle-même ferme entièrement l'ouverture supérieure délimitée par la paroi périphérique 9 du corps 1. La membrane 4 quant à elle consiste en un disque plat à l'état initial. Lorsque l'utilisateur appuie sur le disque, ce dernier se déforme de manière à former une cuvette qui s'approche du support 7. Dans ce mode de réalisation, la membrane 4 forme toute la surface supérieure de la casquette 2.In the second embodiment illustrated in Figures 10 to 14 , the support 7 consists of a bowl directed towards the inside of the body 1. The bowl itself completely closes the upper opening delimited by the peripheral wall 9 of the body 1. The membrane 4 as for it consists of a flat disc in the initial state. When the user presses on the disk, the latter deforms so as to form a bowl that approaches the support 7. In this embodiment, the membrane 4 forms the entire upper surface of the cap 2.

Par ailleurs, la pompe présente un clapet d'admission par lequel une dose de produit à distribuer peut rentrer pour aller dans la chambre de dosage 21. Ce clapet d'admission se compose :

  • d'un orifice d'admission 14 pratiqué dans le corps 1
  • et de moyens de fermeture et d'ouverture de cet orifice d'admission 14, consistant en une langue 15 souple s'étendant de la casquette 2 et venant fermer élastiquement l'orifice 14.
Furthermore, the pump has an inlet valve through which a dose of product to be dispensed can enter to go to the metering chamber 21. This intake valve is composed of:
  • of an intake orifice 14 made in the body 1
  • and means for closing and opening this intake opening 14, consisting of a flexible tongue 15 extending from the cap 2 and elastically closing the orifice 14.

Dans le premier mode de réalisation, le disque 23 du corps 1 présente un renfoncement 16, l'orifice d'admission 14 étant pratiqué dans l'une des parois de ce renfoncement 16. La langue 15 pénètre dans ce renfoncement 16 et vient se plaquer sur la paroi dans laquelle se trouve l'orifice 14, de manière à le recouvrir.In the first embodiment, the disc 23 of the body 1 has a recess 16, the inlet orifice 14 being formed in one of the walls of this recess 16. The tongue 15 enters this recess 16 and is pressed on the wall in which the orifice 14 is, so as to cover it.

Dans le second mode de réalisation, l'orifice d'admission 14 est pratiqué directement dans le support 7. Pour accélérer l'admission d'une dose de produit dans la chambre de dosage 21, il existe deux orifices d'admission 14a,14b diamétralement opposés. De la même manière, il existe alors deux langues 15a, 15b venant recouvrir chacune un orifice d'admission 14a,14b. Les langues 15a, 15b ont des longueurs différentes de manière à s'adapter à l'emplacement des orifices d'admission 14a,14b sur le support 7. Il peut exister plusieurs formes de langue et plusieurs longueurs de langue, selon les dimensions et les emplacements des orifices d'admission. Les exemples proposés ne sont pas limitatifs.In the second embodiment, the admission orifice 14 is made directly in the support 7. To accelerate the admission of a dose of product into the metering chamber 21, there are two intake ports 14a, 14b diametrically opposed. In the same way, there are then two languages 15a, 15b each covering an intake port 14a, 14b. The tongues 15a, 15b have different lengths so as to adapt to the location of the intake orifices 14a, 14b on the support 7. There may be several language forms and several tongue lengths, depending on the dimensions and intake port locations. The examples proposed are not limiting.

La pompe présente également un clapet d'échappement par lequel sort une dose de produit à distribuer. Plus précisément, le produit sort de la chambre de dosage 21 et arrive dans l'embout 12 via le clapet d'échappement. Ce clapet d'échappement se compose :

  • d'un orifice d'échappement 13 pratiqué dans la casquette 2
  • et de moyen de fermeture et d'ouverture de cet orifice d'échappement 13, consistant en la zone tronconique 6 précédemment citée.
The pump also has an exhaust valve through which a dose of product to be dispensed. More specifically, the product exits the metering chamber 21 and arrives in the nozzle 12 via the exhaust valve. This exhaust valve is composed of:
  • an exhaust port 13 made in the cap 2
  • and means for closing and opening this exhaust port 13, consisting of the frustoconical zone 6 previously mentioned.

Dans les deux modes de réalisation, la zone tronconique 6 ferme élastiquement l'orifice d'échappement 13, dans un état initial où le support 7 est relevé. Lorsque le support 7 est rabaissé, comme cela sera expliqué plus loin dans la description, la zone tronconique 6 est déformée et ouvre l'orifice d'échappement 13.In both embodiments, the frustoconical zone 6 elastically closes the exhaust port 13, in an initial state where the support 7 is raised. When the support 7 is lowered, as will be explained later in the description, the frustoconical zone 6 is deformed and opens the exhaust port 13.

Dans le premier mode de réalisation, la partie supérieure de la paroi périphérique 9 du corps 1 présente un épaulement 18 sur lequel vient se positionner une paroi périphérique 19 de la casquette 2. Une rainure circonférentielle est pratiquée dans l'extrémité supérieure de la paroi périphérique 9 du corps 1, et accueille un bourrelet circonférentiel prévu à cet effet dans la paroi périphérique 19 de la casquette 2, de manière à assurer un emboîtement élastique entre le corps 1 et la casquette 2. Cet emboîtement permet également d'assurer l'étanchéité entre le corps 1 et la casquette 2.In the first embodiment, the upper part of the peripheral wall 9 of the body 1 has a shoulder 18 on which is positioned a peripheral wall 19 of the cap 2. A circumferential groove is formed in the upper end of the peripheral wall 9 of the body 1, and accommodates a circumferential bead provided for this purpose in the peripheral wall 19 of the cap 2, so as to ensure an elastic interlocking between the body 1 and the cap 2. This interlocking also makes it possible to seal between the body 1 and the cap 2.

Dans le second mode de réalisation, il n'existe pas d'épaulement. La casquette 2 présente un rebord annulaire rigide 22 entourant la membrane 4 plane de manière à empêcher tout actionnement accidentel de la pompe par appui sur une zone périphérique de ladite membrane 4 plane. Comme la membrane 4 n'est pas saillante relativement au plan formé par le rebord rigide, contrairement au premier mode de réalisation, l'appui s'exerce sur les bords rigides 22 lorsque le flacon est posé tête en bas sur un support. Le support ne peut ainsi pas causer d'actionnement accidentel de la pompe dans cette position.In the second embodiment, there is no shoulder. The cap 2 has a rigid annular flange 22 surrounding the flat membrane 4 so as to prevent any accidental actuation of the pump by pressing on a peripheral zone of said flat membrane 4. As the membrane 4 is not protruding relative to the plane formed by the rigid flange, unlike the first embodiment, the support is exerted on the rigid edges 22 when the bottle is placed upside down on a support. The support can not cause accidental actuation of the pump in this position.

Ce rebord 22 consiste ainsi en une protection géométrique contre l'actionnement non contrôlé de la pompe. Il est conçu en polypropylène de préférence.This rim 22 thus consists of a geometrical protection against the uncontrolled actuation of the pump. It is made of polypropylene preferably.

On remarque ainsi qu'en fonction de leur rôle, les différents éléments constituant la pompe sont soit souple soit rigide. En l'espèce, la membrane 4, la zone tronconique 6, la charnière film 3, les langues 15, 15a, 15b sont constitués dans une matière souple et élastique, du type élastomère thermoplastique (TPE). Les autres éléments sont quant à eux constitués d'une matière rigide. Le moulage de la pompe est donc réalisé par bi-injection d'une matière souple et d'une matière rigide dans un même et unique moule pour former l'unique pièce.It is thus noted that depending on their role, the various elements constituting the pump are either flexible or rigid. In this case, the membrane 4, the frustoconical zone 6, the film hinge 3, the tongues 15, 15a, 15b are made of a flexible and elastic material of the thermoplastic elastomer (TPE) type. The other elements are made of a rigid material. The molding of the pump is thus made by bi-injection of a flexible material and a rigid material into a single mold to form the single piece.

Nous allons ci-après décrire le fonctionnement de cette pompe selon le premier mode de réalisation.We will hereinafter describe the operation of this pump according to the first embodiment.

En figure 5, la pompe est en position de repos. La pompe est étanche, la casquette 2 étant emboîtée sur le corps 1. La membrane 4 est dans son état initial, en forme de dôme et la tige 5 est en position relevée. La réaction élastique du dôme 4 précontraint tend à tirer sur la tige de commande 5. La butée 11 de la tige de commande 5 est en contact avec la cheminée 10 et tend à soulever le support 7 ainsi que la zone tronconique 6. Cette zone tronconique 6 obstrue alors l'orifice d'échappement 13. L'orifice d'admission 14 est fermé par la langue 15. La chambre de dosage 21 est remplie d'une dose de produit à distribuer. La pression à l'intérieur de la chambre 21 est identique à la pression à l'extérieur de la chambre, et la langue 15 est plaquée sur le siège de l'orifice d'admission 14 par simple effet élastique. La fermeture du clapet d'admission est ainsi étanche.In figure 5 , the pump is in the rest position. The pump is sealed, the cap 2 being fitted on the body 1. The membrane 4 is in its initial state, domed and the rod 5 is in the raised position. The elastic reaction of the prestressed dome 4 tends to pull on the control rod 5. The stop 11 of the control rod 5 is in contact with the chimney 10 and tends to lift the support 7 and the frustoconical zone 6. This frustoconical zone 6 then obstructs the exhaust port 13. The inlet port 14 is closed by the tongue 15. The metering chamber 21 is filled with a dose of product to be dispensed. The pressure inside the chamber 21 is identical to the pressure outside the chamber, and the tongue 15 is pressed onto the seat of the inlet orifice 14 by simple elastic effect. The closing of the intake valve is thus sealed.

En figure 6, une pression est exercée au sommet du dôme 4. La tige de commande 5 est en léger serrage dans la cheminée 10 et entraîne ainsi la cheminée 10 et le support 7 vers le bas, entraînant une déformation de la zone tronconique 6 et l'ouverture de l'orifice d'échappement 13 alors que la membrane 4 n'est que faiblement déformée. En conséquence, le fluide est distribué sans être soumis à de fortes pressions. D'une part, on prévient ainsi des risques de séparation de phase dans la lotion, et d'autre part le fluide n'est pas distribué de manière violente et peut être distribué doucement dans la main de l'utilisateur. En figure 7 la membrane 4 est dans son état déformé, en forme de cuvette. Lors de la descente de la tige de commande 5 suite à l'appui sur la membrane 4, la force de serrage entre la tige 5 et la cheminée 10 est vaincue et la tige 5 translate ainsi vers le bas par rapport à la cheminée 10 jusqu'à une position dite enfoncée. Le volume de la chambre de dosage 21 diminue et une grande partie de la dose de produit contenue dans la chambre de dosage 21 est distribuée via l'embout 12.In figure 6 pressure is exerted at the top of the dome 4. The control rod 5 is in slight clamping in the chimney 10 and thus causes the chimney 10 and the support 7 downwards, causing a deformation of the frustoconical zone 6 and the opening of the exhaust port 13 while the membrane 4 is only slightly deformed. As a result, the fluid is dispensed without being subjected to strong pressures. On the one hand, it prevents the risk of phase separation in the lotion, and secondly the fluid is not distributed violently and can be gently dispensed into the hand of the user. In figure 7 the membrane 4 is in its deformed state, in the form of a bowl. During the descent of the control rod 5 following the support on the membrane 4, the clamping force between the rod 5 and the chimney 10 is overcome and the rod 5 thus translates downwardly with respect to the chimney 10 until 'to a so-called depressed position. The volume of the metering chamber 21 decreases and a large part of the dose of product contained in the metering chamber 21 is distributed via the tip 12.

En figure 8, il n'y a plus de pression sur la membrane 4. La réaction élastique de la membrane 4 permet la remontée du système. En particulier, la membrane 4 repasse de sa forme en cuvette à sa forme de dôme et fait remonter la tige de commande 5. La cheminée 10 étant serrée sur la tige 5, la remontée de la tige 5 tend à faire remonter le support 7 et à plaquer la zone tronconique 6 sur l'orifice d'échappement 13. Le clapet d'échappement est alors fermé. Le volume de la chambre de dosage réaugmente. Il y a une dépression dans la chambre 21, ce qui provoque l'ouverture du clapet d'admission en soulevant la langue 15 de manière à ouvrir l'orifice d'admission 14 du produit fluide. L'aspiration du produit se poursuit jusqu'à l'arrivée en butée haute de la tige 5 sous la cheminée 10.In figure 8 there is no more pressure on the membrane 4. The elastic reaction of the membrane 4 allows the system to rise. In particular, the diaphragm 4 returns from its bowl shape to its dome shape and raises the control rod 5. The chimney 10 being tight on the rod 5, the rise of the rod 5 tends to raise the support 7 and to press the frustoconical zone 6 on the exhaust port 13. The exhaust valve is then closed. The volume of the dosing chamber is increasing. There is a depression in the chamber 21, which causes the opening of the intake valve by lifting the tongue 15 so as to open the inlet 14 of the fluid. The suction of the product continues until reaching the high abutment of the rod 5 under the chimney 10.

En figure 9, la pompe est retournée dans son état de repos. La réaction élastique du dôme précontraint 4 lors de l'assemblage du système permet le placage de la zone tronconique 6 sur l'orifice d'échappement 13. La chambre de dosage 21 est donc fermée hermétiquement. La dépression ayant chuté, la langue 15 du clapet d'admission, de par l'élasticité intrinsèque du matériau souple dans lequel il est conçu, se replaque sur l'orifice d'admission 14. La dose suivante est prête à être délivrée.In figure 9 , the pump is returned to its idle state. The elastic reaction of the prestressed dome 4 during the assembly of the system allows the veneering of the frustoconical zone 6 on the exhaust port 13. The metering chamber 21 is thus hermetically sealed. The depression having fallen, the tongue 15 of the intake valve, by the intrinsic elasticity of the flexible material in which it is designed, is replicated on the inlet port 14. The next dose is ready to be delivered.

Dans son second mode de réalisation, la pompe fonctionne de manière similaire à ce qui est décrit ci-dessus, à la différence près que la membrane 4 est plane dans son état initial précontraint, et qu'elle prend une forme de cuvette lorsqu'une pression est exercée sur elle.In its second embodiment, the pump operates in a manner similar to that described above, with the difference that the membrane 4 is flat in its initial prestressed state, and that it takes a cup shape when a pressure is exerted on her.

Les configurations montrées aux figures citées ne sont que des exemples possibles, nullement limitatifs, de l'invention qui englobe au contraire les variantes de formes et de conceptions à la portée de l'homme de l'art.The configurations shown in the figures cited are only possible examples, in no way limiting, of the invention which, on the contrary, encompasses variants of shapes and designs within the reach of those skilled in the art.

Claims (13)

Pompe de distribution d'un produit fluidique apte à être montée sur un contenant du type tube flexible ou flacon rigide, comportant - une chambre de dosage 21 à volume variable définie au moins en partie par une membrane 4 déformable entre un état initial dans lequel le volume de la chambre de dosage 21 est maximal et un état déformé dans lequel le volume de la chambre de dosage 21 est minimal ; - un clapet d'admission du produit fluidique vers la chambre de dosage 21 ; - un clapet d'échappement du produit fluidique depuis la chambre de dosage 21 ; - des moyens d'ouverture et de fermeture des clapets d'admission et d'échappement ; ladite pompe consistant en une unique pièce moulée constituée de deux parties, respectivement un corps 1 et une casquette 2, reliées par une articulation 3 du type charnière-film, caractérisée en ce que la casquette 2 comporte : - ladite membrane 4 présentant un axe central X ; - une tige de commande 5 s'étendant selon l'axe X depuis la membrane 4 en direction du corps 1 lorsque la casquette 2 est positionnée sur le corps 1 ; - des moyens de fermeture et d'ouverture du clapet d'admission ; - un orifice d'échappement 13 du clapet. Pump for dispensing a fluidic product that can be mounted on a container of the flexible tube or rigid bottle type, comprising a variable volume dosing chamber 21 defined at least in part by a deformable membrane 4 between an initial state in which the volume of the metering chamber 21 is maximum and a deformed state in which the volume of the metering chamber 21 is minimal; a valve for admitting the fluid product to the metering chamber 21; an outlet valve for the fluid product from the metering chamber 21; - Opening and closing means of the intake and exhaust valves; said pump consisting of a single molded part consisting of two parts, respectively a body 1 and a cap 2, connected by a joint 3 of the hinge-film type, characterized in that the cap 2 comprises: said membrane 4 having a central axis X; - A control rod 5 extending along the axis X from the membrane 4 towards the body 1 when the cap 2 is positioned on the body 1; - Means for closing and opening the inlet valve; - An exhaust port 13 of the valve. Pompe selon la revendication précédente, caractérisée en ce que ladite pièce est constituée d'une première matière souple et d'une seconde matière rigide.Pump according to the preceding claim, characterized in that said part consists of a first flexible material and a second rigid material. Pompe selon la revendication précédente, caractérisée en ce que le corps 1 comporte : - une structure rigide 9 apte à être fixée sur un contenant ; - un orifice d'admission 14 du clapet d'admission ; - les moyens d'ouverture et de fermeture du clapet d'échappement ; - un support 7 dans lequel est pratiqué un trou 8 destiné à accueillir ladite tige de commande 5 de la pompe. Pump according to the preceding claim, characterized in that the body 1 comprises: a rigid structure 9 able to be fixed on a container; an intake orifice 14 of the intake valve; the means for opening and closing the exhaust valve; a support 7 in which is made a hole 8 intended to accommodate said control rod 5 of the pump. Pompe selon la revendication précédente, caractérisée en ce que les moyens de fermeture et d'ouverture du clapet d'admission consistent en une langue 15 souple venant fermer élastiquement l'orifice d'admission 14.Pump according to the preceding claim, characterized in that the means for closing and opening the inlet valve consist of a flexible tongue 15 resiliently closing the inlet orifice 14. Pompe selon la revendication précédente, caractérisée en ce que la langue 15 souple s'écarte de l'orifice d'admission 14 sous l'effet de la dépression dans la chambre de dosage 21 lors du retour entre l'état déformé et l'état initial de la membrane 4.Pump according to the preceding claim, characterized in that the flexible tongue 15 deviates from the inlet orifice 14 under the effect of the depression in the metering chamber 21 during the return between the deformed state and the state initial membrane 4. Pompe selon l'une des revendications 3 à 5, caractérisée en ce que la tige de commande 5 est mobile en translation selon l'axe X entre une position relevée où la membrane 4 est dans son état initial, et une position enfoncée où la membrane 4 est dans son état déformé, l'activation de la tige de commande 5 s'effectue suite à une pression exercée sur la membrane 4 pour la passer de son état initial à son état déformé.Pump according to one of claims 3 to 5, characterized in that the control rod 5 is movable in translation along the axis X between a raised position where the membrane 4 is in its initial state, and a depressed position where the membrane 4 is in its deformed state, the activation of the control rod 5 is effected following a pressure exerted on the membrane 4 to move from its initial state to its deformed state. Pompe selon l'une des revendications 3 à 6, caractérisée en ce que les moyens de fermeture et d'ouverture du clapet d'échappement consistent en une zone tronconique 6 souple venant fermer élastiquement l'orifice d'échappement 13 et s'étendant autour du support 7.Pump according to one of claims 3 to 6, characterized in that the means for closing and opening the exhaust valve consist of a flexible frustoconical zone 6 which resiliently close the exhaust port 13 and extending around of support 7. Pompe selon la revendication précédente, caractérisée en ce que la tige de commande 5 est montée serrée dans le trou 8 du support 7 et le mouvement de translation de la tige 5 entre la position relevée et la position enfoncée entraîne une déformation de la zone tronconique 6 de manière à ouvrir l'orifice d'échappement 13 dès le début de la déformation de la membrane 4, et le retour de la tige 5 dans sa position relevée entraîne la remise en place de la zone tronconique 6 de manière à fermer l'orifice d'échappement 13.Pump according to the preceding claim, characterized in that the control rod 5 is mounted tightly in the hole 8 of the support 7 and the translational movement of the rod 5 between the raised position and the depressed position causes deformation of the frustoconical zone 6 so as to open the exhaust port 13 from the beginning of the deformation of the membrane 4, and the return of the rod 5 in its raised position causes the refitting of the frustoconical zone 6 so as to close the orifice exhaust 13. Pompe selon l'une des revendications 3 à 8, caractérisée en ce que le support 7 comporte une cheminée 10 délimitant le trou 8 accueillant la tige de commande 5, ladite tige 5 comportant une extrémité libre dotée d'une butée 11 apte à venir au contact de la cheminée 10.Pump according to one of claims 3 to 8, characterized in that the support 7 comprises a chimney 10 defining the hole 8 accommodating the control rod 5, said rod 5 having a free end with a stop 11 adapted to come to the contact of the chimney 10. Pompe selon la revendication précédente, caractérisée en ce que, dans l'état initial de la membrane 4, la butée 11 de la tige 5 exerce une force sur la cheminée 10 du support 7 pour le maintien en place de la zone tronconique 6 de manière à fermer l'orifice d'échappement 13.Pump according to the preceding claim, characterized in that , in the initial state of the membrane 4, the abutment 11 of the rod 5 exerts a force on the chimney 10 of the support 7 for holding in place the frustoconical zone 6 so as to close the exhaust port 13. Pompe selon l'une des revendications précédentes, caractérisée en ce que le retour entre l'état déformé et l'état initial de la membrane 4 s'effectue par réaction élastique de la membrane 4.Pump according to one of the preceding claims, characterized in that the return between the deformed state and the initial state of the membrane 4 is effected by elastic reaction of the membrane 4. Pompe selon la revendication précédente lorsqu'elle dépend des revendications 7 à 8, caractérisée en ce qu'elle comporte des moyens de protection géométrique contre son actionnement non contrôlé, du type rebord rigide 22.Pump according to the preceding claim when it depends on claims 7 to 8, characterized in that it comprises geometric protection means against its uncontrolled actuation, of the rigid flange type 22. Procédé de fabrication d'une pompe telle que décrite dans les revendications précédentes, caractérisé en ce qu'il comporte les étapes suivantes : - moulage d'une seule pièce comportant deux parties principales, à savoir un corps 1 et une casquette 2, reliées par une charnière-film 3 ; - pliage de la charnière-film 3, dans le moule, de manière à positionner la casquette 2 sur le corps 1 et fermer la pompe ; - démoulage de la pompe fermée et prête à utilisation. A method of manufacturing a pump as described in the preceding claims, characterized in that it comprises the following steps: one-piece molding comprising two main parts, namely a body 1 and a cap 2, connected by a film-hinge 3; folding the hinge-film 3 in the mold so as to position the cap 2 on the body 1 and close the pump; - Unmolding the pump closed and ready for use.
EP18175550.5A 2017-06-22 2018-06-01 Moulded pump for dispensing a fluid product Active EP3417948B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1755731A FR3067952B1 (en) 2017-06-22 2017-06-22 MOLDED PUMP FOR THE DISTRIBUTION OF A FLUIDIC PRODUCT

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EP3417948A1 true EP3417948A1 (en) 2018-12-26
EP3417948B1 EP3417948B1 (en) 2021-08-04

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US (1) US10525492B2 (en)
EP (1) EP3417948B1 (en)
CN (1) CN109205065B (en)
BR (1) BR102018012895A8 (en)
FR (1) FR3067952B1 (en)

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BR102018012895A2 (en) 2019-03-12
US10525492B2 (en) 2020-01-07
BR102018012895A8 (en) 2022-12-20
FR3067952A1 (en) 2018-12-28
CN109205065B (en) 2021-10-08
US20180369843A1 (en) 2018-12-27
EP3417948B1 (en) 2021-08-04
FR3067952B1 (en) 2020-10-09
CN109205065A (en) 2019-01-15

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