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EP3210672B1 - Pump for a receptacle, in particular a bottle for a cosmetic product, and a dispensing device comprising such a pump - Google Patents

Pump for a receptacle, in particular a bottle for a cosmetic product, and a dispensing device comprising such a pump Download PDF

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Publication number
EP3210672B1
EP3210672B1 EP17154357.2A EP17154357A EP3210672B1 EP 3210672 B1 EP3210672 B1 EP 3210672B1 EP 17154357 A EP17154357 A EP 17154357A EP 3210672 B1 EP3210672 B1 EP 3210672B1
Authority
EP
European Patent Office
Prior art keywords
membrane
pump
chamber
rod
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17154357.2A
Other languages
German (de)
French (fr)
Other versions
EP3210672A1 (en
Inventor
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 Lacrost SAS
Original Assignee
Albea Lacrost SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Albea Lacrost SAS filed Critical Albea Lacrost SAS
Publication of EP3210672A1 publication Critical patent/EP3210672A1/en
Application granted granted Critical
Publication of EP3210672B1 publication Critical patent/EP3210672B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/0068—Jars
    • A45D40/0075—Jars with dispensing 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
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1033—Pumps having a pumping chamber with a deformable wall the deformable wall, the inlet and outlet valve elements being integrally formed, e.g. moulded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1028—Pumps having a pumping chamber with a deformable wall
    • B05B11/1035—Pumps having a pumping chamber with a deformable wall the pumping chamber being a bellow
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F04B23/028—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir the pump being mounted on top of the reservoir
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/054—Means for supplying liquid to the outlet of the container
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/05—Details of containers
    • A45D2200/054—Means for supplying liquid to the outlet of the container
    • A45D2200/056—Reciprocating pumps, i.e. with variable volume chamber wherein pressure and vacuum are alternately generated

Definitions

  • the invention relates to a pump for a receptacle, in particular a cosmetic product bottle.
  • the invention also relates to a receptacle comprising such a pump.
  • Certain cosmetic product bottles are provided with a pump configured to suck the cosmetic product contained in the container of the bottle in order to distribute it, for example by means of a nozzle or by a simple opening.
  • the product can thus be extracted or sprayed from the bottle in order to allow its application.
  • the pump is often operated by means of a push button which the user presses to initiate operation of the pump.
  • a pump comprises in particular a pumping chamber, the volume of which varies to allow the product to be sucked into the chamber through an inlet orifice, when the volume increases, then its expulsion outside the chamber through an outlet orifice, when the volume of the chamber decreases.
  • the product leaves the chamber in a distribution duct, which leads it to the opening or the nozzle usually arranged on the push-button.
  • pumps are known, each having particular characteristics, in order to operate specifically, either with low viscosity liquid products, or else with viscous liquid products, such as creams or foams.
  • pumps whose chamber is formed by a rigid body and a piston which closes the chamber, and whose displacement in the body reduces or increases the volume of the chamber.
  • the movement of the piston is usually controlled by actuating the push button.
  • Such a pump is used in particular for liquid products to be vaporized.
  • pumps generally intended for more viscous products, the chamber of which is defined in large part by a flexible membrane, also called “bellows".
  • the volume of the chamber is controlled by deformation of the membrane. In the undeformed configuration of the membrane, the chamber volume is maximum. When the membrane is deformed, the volume of the chamber decreases, preferably to a volume small enough for a maximum of product to exit the chamber.
  • Such pumps also have the advantage of avoiding having to resort to a metal spring, the elements of the pump being made of plastic material.
  • the document FR2804728 which describes a deformable diaphragm pump provided with slits as inlet and outlet ports of the pumping chamber.
  • the diaphragm has a particular shape and it is held in a compartment to control the way it bends and unfolds.
  • Another document FR2915467 shows a pump with a diaphragm having the shape of an accordion-shaped bellows.
  • the bellows folds and unfolds along fold lines of the bellows.
  • the membrane is divided into several parts hooked on the one hand to the push button and on the other hand in the body of the pump.
  • Such a pump is therefore difficult to assemble and therefore complex and expensive to manufacture.
  • Other exemplary pumps are described in JP 2007 289840 A and WO 2012/088239 A2 .
  • the invention aims to improve the situation by avoiding the aforementioned defects, by providing a pump provided with a deformable membrane made in one piece, the deformation of which is guided to ensure optimal folding, without having to force the membrane in a compartment or give it a complex shape.
  • the invention relates to a pump for a receptacle according to claim 1.
  • the invention makes it possible to guide the membrane when it undergoes the deformation by virtue of the guide rod, and to prevent the membrane from bending in a manner that is harmful to the pump. Indeed, the membrane slides along the rod during its deformation so that the membrane is retained radially with respect to the rod, and it moves only along the axis of the rod.
  • the invention also relates to a receptacle, in particular a bottle for a cosmetic product, comprising a pump as mentioned above.
  • the invention relates to a pump 1 for a receptacle 10, in particular a bottle intended to contain a cosmetic product.
  • the pump includes a push-button 2 ( figure 1 (a) ), a deformable membrane 3 ( figure 1 (b) ) and a sleeve 4 ( figure 1 (c) ).
  • the function of the push-button 2 is to allow the actuation of the pump 1 by a user.
  • the push-button 2 here has a cylindrical body 5 provided with an opening 6 for dispensing the product and an upper bearing wall 7 on which the user exerts pressure to actuate the pump 1, the push-button 2 inserting into the sleeve 4 during actuation.
  • the push-button 2 is for example formed from a material of the polypropylene type.
  • the pump further comprises a pumping chamber 8 with variable volume defined at least in part by the deformable membrane 3.
  • the pump 1 operates by varying the volume of the chamber 8 by elastic deformation of the membrane between an initial state shown in the figure. figure 2 (a) in which the chamber 8 has a maximum volume and a deformed state shown in the figure 2 (c) in which the volume of chamber 8 is minimal.
  • the chamber 8 has a shape having a longitudinal axis in the initial state, and here has the shape of a rounded dome 9 comprising a circular base 11 and a top 12.
  • the longitudinal axis of the chamber 8 passes substantially through the center of the chamber. base 11 and by the top 12 of the dome 9.
  • the membrane 3 also has an appendage 13 surmounting the dome 9, the interior volume of the dome 9 and of the appendix 13 defining the pumping chamber 8.
  • the membrane 3 is here formed from a single elastic material, preferably a polymer material, for example a thermoplastic elastomer of the TPE type (for “thermoplastic elastomer” in English).
  • the membrane 3 is also provided at its base 11 with an internal flange 14, which is intended to position the dome 9 in the sleeve 4 and to serve as an inlet valve for the chamber 8.
  • the longitudinal axis of the membrane 3 passes through the top 12 and the appendage 13 and substantially through the center of the base 11 of the dome 9.
  • An outer rim 15 is arranged around the base 11 of the membrane 3, in order to serve as a retaining means for the membrane 3 in the sleeve 4.
  • the sleeve 4 comprises an internal cylinder 16 and an external cylinder 17 which are substantially concentric, which serve as means for guiding the push button 2.
  • the body 5 of the push button can move between the internal cylinder 16 and the external cylinder 17.
  • the sleeve 4 is further provided with coupling means 18 with the receptacle 10, for example with a snap-in system as shown in the figures. figures 2 (a) to (e) .
  • the latching system is here a ring arranged on the sleeve 4 and a counter-ring arranged on the receptacle 10, the ring being latched under the counter-ring.
  • the sleeve 4 is also provided with a support wall 19 on which the deformable membrane 3 rests at least in part.
  • the internal cylinder 16 further comprises a retaining notch 21 arranged on the internal face of the internal cylinder 16, so as to block the membrane. 3 against the support wall 19.
  • the notch 21 retains the outer rim 15 of the dome 9.
  • the support wall 19 of the sleeve 4 also comprises a through hole 22 which defines an inlet orifice of the pumping chamber 8.
  • the hole 22 is covered by the internal flange 14 of the membrane when the membrane 3 is inserted into the sleeve 4, so as to form an inlet valve for the chamber 8.
  • the flange 14 is also elastic because it is made of the same material as the membrane 3. Thus, the collar 14 can be raised to allow the product to enter the chamber 8.
  • FIG. 5 An alternative embodiment of a sleeve 40 is shown in the figures 5 and 6 .
  • This sleeve 40 is provided with a removable bottom 41, and comprises in particular the support wall 19 and the rod 20.
  • the element 42, which defines the other part of the sleeve 40, and the bottom 41 are arranged to be able to be assembled.
  • the bottom 41 comprises a circumferential rib 43 which is blocked by a latching catch 44 disposed inside the element 42, as is shown in the figure. figure 6 .
  • the pump 1 comprises a deformation means arranged outside the chamber 8 and configured to exert pressure on the membrane 3 when the push-button 2 is actuated.
  • the deformation means is a distribution duct 23 having an open end 26 in contact with the membrane 3.
  • the distribution duct 23 here forms part of the push-button 2, the duct extending inside the push-button 2 from the internal face of the upper wall 7.
  • the function of the distribution duct 23 is to bring the product leaving the pumping chamber 8 to the opening 6 of the push-button 2.
  • the distribution duct 23 is in sealed contact with the membrane 3. For this, the appendix 13 is inserted into the distribution duct 23, the duct 23 resting on the dome 9 of the membrane 3.
  • the appendix 13 is also provided with a bead 24 external which allows on the one hand to block it in the duct 23 and on the other hand to ensure the sealing of the contact with the distribution duct 23.
  • the bead 24 goes around the appendix 13, here at the junction of the dome 9, and is dimensioned substantially to the dimensions of the open end 26 of the distribution duct 23.
  • the chamber 8 further comprises an outlet orifice for the product, the outlet orifice being arranged on the membrane 3, preferably on the appendix 13.
  • the outlet orifice is here a slot 25 which opens when the chamber. 8 pumping deforms.
  • the distribution duct 23 cooperates with the slot 25 to receive the product leaving the chamber 8.
  • the slot 25 is disposed in the distribution duct 23 beyond the bead 24. Thus, when the product leaves the slot 25 in the distribution pipe 23, the product is guided in the distribution pipe 23.
  • the sleeve 4 is provided with a rod 20 for guiding the membrane 3, which extends from the support wall 19 of the sleeve 4.
  • the rod 20 is arranged substantially along the axis of the cylinders 16, 17. of the sleeve 4.
  • the guide rod 20 passes through the membrane, so that the membrane 3 slides along the rod 20 when it undergoes said deformation, the rod 20 passing through the chamber 8 substantially along the longitudinal axis of the chamber 8
  • the rod 20 passes through the top 12 of the dome 9 from its base 11, as well as the appendix 13, the rod emerging from the appendix 13 into the distribution duct 23.
  • the top 12 of the dome 9 and the appendix 13 thus have a through channel which allows the rod 20 to pass through the membrane 3.
  • the function of the rod 20 is to guide the membrane 3 when it passes from the initial state to the deformed state, then from the deformed state to the initial state.
  • the dome 9 is thus configured to be able to fold its top 12 towards its base 11, the appendage 13 of the membrane 3 also moving towards the base 11 of the dome 9, along the rod 20.
  • the appendix 13 comprises an end 27 in close contact around the rod 20.
  • the rod has a retaining head 30 which presses on the end 27 of the appendix 13 in the initial position, so as to cause a slight elastic stress of the dome.
  • the elastic constraint makes it possible to force the end 27 of the appendix 13 against the rod 20 in order to ensure the seal between them.
  • the invention makes it possible to open the product outlet slit 25, without requiring overpressure in the pumping chamber.
  • diaphragm pumps provided with known outlet slits operate by producing an overpressure inside the chamber, and therefore of the cosmetic product, to cause the slit to open.
  • this overpressure risks damaging the product, for example by causing a phase shift, or else the membrane, by accelerating its wear.
  • FIG. 1 shows the pump 1 in the initial state, in which the chamber 8 has its maximum volume.
  • the distribution duct 23 presses on the dome 9 which begins to deform as shown in the figure. figure 2 (a) .
  • the top of the dome 9 flattens, while the slot 25 opens.
  • the dome 9 first folds down by lowering towards the base 11, the appendage 13 and the central part of the dome 9 on which the distribution tube 23 exerts pressure.
  • the product contained in chamber 8 begins to be expelled through slot 25.
  • the push-button 2 is fully inserted into the sleeve 4, which causes the peripheral part of the dome 9 to fold back, forming a circular crown.
  • the crown is formed by two layers of membrane folded against each other and forming an elbow. Chamber 8 thus reaches a minimum volume of preferably as small as possible, so that as much product as possible comes out through slot 25.
  • the membrane 3 remains centered around the longitudinal axis of the sleeve 4. The risk of poorly controlled folding of the membrane 3 is thus avoided.
  • the figures 2 (d) and 2 (e) show the reverse deformation of the membrane, from the deformed configuration to the initial configuration.
  • the push-button 2 When the push-button 2 is no longer held down by the user, while the membrane is strongly deformed, the volume of the chamber is minimal and the membrane exerts a pressure force against the distribution duct 23, this force being due to the elastic nature of the membrane 3 which tends to regain its initial shape.
  • the push-button 2 is thus pushed back towards the outside of the sleeve 4 in a telescopic manner.
  • the appendage 13 slides along the rod 20 in the opposite direction, which closes the slot 25 because of the friction which is due to the end 27 clamped around the rod 20.
  • the chamber 8 being closed, a vacuum is created. created inside the chamber 8 because its volume increases without sucking in air.
  • the vacuum created in the chamber 8 forces, on the one hand, the flange 14 of the inlet valve to rise, and on the other hand, causes the product to be sucked into the chamber from the reservoir of the receptacle, like this is represented on the figure 4 .
  • the hole 22 is open and places the chamber 8 in communication with the reservoir of the receptacle.
  • the product is thus sucked through the hole 22 in the chamber 8 while the dome 9 returns to its initial shape.
  • the membrane 3 has completely resumed its initial shape, the chamber 8 is recharged with product to be dispensed, so that the pump 1 is usable again.
  • the receptacle does not recover outside air in the reservoir to compensate for the exit of the product out of the chamber.
  • the receptacle is preferably provided with a variable volume reservoir, which decreases as the product is dispensed. Thus, the product is always close to the inlet opening to be sucked into the chamber.
  • the sleeve 40 further comprises a dip tube 28, the sleeve 40 having in these figures a removable bottom 41 to which the dip tube 28 is connected.
  • the tube 28 is intended to be immersed in the reservoir of the receptacle 10, when the pump 1 is mounted on the receptacle 10.
  • the tube 28 opens into the support wall 19 of the sleeve 40 at the level of the hole 22 of the inlet orifice of the chamber 8.
  • the pump 1 has been triggered, the product rises in the tube 28 by suction to refill the pumping chamber 8.
  • the pump 1 further comprises an air intake passage to make it possible to compensate for the depression in the reservoir induced by the rise of the product from the reservoir of the receptacle into the chamber.
  • the air intake passage which is represented by an arrow coming from outside the pump 1 in the tank, first passes between the outer cylinder 17 of the sleeve 40 and the cylindrical body 5 of the push-button 2 , then rises between the cylindrical body 5 of the push-button and the internal cylinder 16 of the sleeve 40. The passage then descends into the internal cylinder 16 of the sleeve 40 and passes through an opening 29 arranged in the bottom 41 of the sleeve 40, the opening 29 opening into the reservoir. Thus, the air circulates through this passage to bring air into the tank.
  • the outer rim of the base of the membrane 3 is extended against the inner cylinder 16 of the sleeve 40 in order to to form an air return valve above the opening.
  • the return air valve closes the opening 29 in the initial position and is folded down towards the bottom of the sleeve 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Reciprocating Pumps (AREA)

Description

L'invention concerne une pompe pour réceptacle, notamment un flacon de produit cosmétique. L'invention se rapporte également à un réceptacle comprenant une telle pompe.The invention relates to a pump for a receptacle, in particular a cosmetic product bottle. The invention also relates to a receptacle comprising such a pump.

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 pompage 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.Certain cosmetic product bottles are provided with a pump configured to suck the cosmetic product contained in the container of the bottle in order to distribute it, for example by means of a nozzle or by a simple opening. The product can thus be extracted or sprayed from the bottle in order to allow its application. The pump is often operated by means of a push button which the user presses to initiate operation of the pump. A pump comprises in particular a pumping chamber, the volume of which varies to allow the product to be sucked into the chamber through an inlet orifice, when the volume increases, then its expulsion outside the chamber through an outlet orifice, when the volume of the chamber decreases. The product leaves the chamber in a distribution duct, which leads it 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 notamment pour des produits liquides à vaporiser.Different kinds of pumps are known, each having particular characteristics, in order to operate specifically, either with low viscosity liquid products, or else with viscous liquid products, such as creams or foams. Thus, there are pumps whose chamber is formed by a rigid body and a piston which closes the chamber, and whose displacement in the body reduces or increases the volume of the chamber. The movement of the piston is usually controlled by actuating the push button. Such a pump is used in particular for liquid products to be vaporized.

Il existe d'autres pompes généralement destinées aux produits plus visqueux, dont la chambre est définie en grande partie par une membrane flexible, appelée aussi « soufflet ». 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 pumps generally intended for more viscous products, the chamber of which is defined in large part by a flexible membrane, also called "bellows". The volume of the chamber is controlled by deformation of the membrane. In the undeformed configuration of the membrane, the chamber volume is maximum. When the membrane is deformed, the volume of the chamber decreases, preferably to a volume small enough for a maximum of product to exit the chamber. Such pumps also have the advantage of avoiding having to resort to a metal spring, the elements of the pump being made of plastic material.

On connaît, par exemple, le document FR2804728 , qui décrit une pompe à membrane déformable munie de fentes comme orifices d'entrée et de sortie de la chambre de pompage. Dans cette pompe, la membrane a une forme particulière et elle est maintenue dans un compartiment pour contrôler la manière dont elle se plie et se déplie. En effet, on veut éviter que la membrane ne se déforme dans une configuration non souhaitée, ce qui risquerait de l'endommager et de nuire au bon fonctionnement de la pompe.We know, for example, the document FR2804728 , which describes a deformable diaphragm pump provided with slits as inlet and outlet ports of the pumping chamber. In this pump, the diaphragm has a particular shape and it is held in a compartment to control the way it bends and unfolds. In fact, we want to prevent the membrane from deforming in an undesired configuration, which would risk damaging it and impairing the proper functioning of the pump.

Un autre document FR2915467 , montre une pompe avec une membrane ayant une forme de soufflet en forme d'accordéon. Le soufflet se plie et se déplie selon des lignes de pliage du soufflet. Cependant, la membrane est divisée en plusieurs parties accrochées d'une part au bouton poussoir et d'autre part dans le corps de la pompe. Une telle pompe est par conséquent difficile à assembler et donc complexe et couteuse à fabriquer. D'autres pompes exemplaires sont décrites en JP 2007 289840 A et WO 2012/088239 A2 .Another document FR2915467 , shows a pump with a diaphragm having the shape of an accordion-shaped bellows. The bellows folds and unfolds along fold lines of the bellows. However, the membrane is divided into several parts hooked on the one hand to the push button and on the other hand in the body of the pump. Such a pump is therefore difficult to assemble and therefore complex and expensive to manufacture. Other exemplary pumps are described in JP 2007 289840 A and WO 2012/088239 A2 .

L'invention vise à améliorer la situation en évitant les défauts précités, en fournissant une pompe munie d'une membrane déformable faite d'un seul tenant dont la déformation est guidée pour assurer un repliement optimal, sans devoir contraindre la membrane dans un compartiment ou lui donner une forme complexe.The invention aims to improve the situation by avoiding the aforementioned defects, by providing a pump provided with a deformable membrane made in one piece, the deformation of which is guided to ensure optimal folding, without having to force the membrane in a compartment or give it a complex shape.

Pour cela, l'invention concerne une pompe pour réceptacle selon la revendication 1.For this, the invention relates to a pump for a receptacle according to claim 1.

Ainsi, l'invention permet de guider la membrane lorsqu'elle subit la déformation grâce à la tige de guidage, et d'éviter que la membrane ne se plie d'une manière dommageable pour la pompe. En effet, la membrane glisse le long de la tige lors de sa déformation de sorte que la membrane est retenue radialement par rapport à la tige, et elle se déplace seulement selon l'axe de la tige.Thus, the invention makes it possible to guide the membrane when it undergoes the deformation by virtue of the guide rod, and to prevent the membrane from bending in a manner that is harmful to the pump. Indeed, the membrane slides along the rod during its deformation so that the membrane is retained radially with respect to the rod, and it moves only along the axis of the rod.

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

  • la membrane est formée d'une seule matière élastique,
  • la membrane est formée de matériau polymère, par exemple en élastomère thermoplastique de type TPE,
  • le dôme comprend une base arrondie et un sommet,
  • l'axe longitudinal de la membrane passe sensiblement par le centre de la base et par le sommet du dôme,
  • la tige traverse le dôme de la base au sommet,
  • le dôme est configuré pour replier son sommet vers sa base,
  • le dôme définit le volume intérieur de la chambre de pompage,
  • le moyen de déformation est un conduit de distribution en contact avec la membrane,
  • le conduit coopère avec l'orifice de sortie de manière étanche pour recevoir le produit sortant de la chambre
  • la tige sort de l'appendice dans le conduit de distribution,
  • la tige comporte une tête de retenue de l'appendice,
  • le dôme est en légère contrainte élastique en position initiale,
  • la contrainte élastique du dôme permet de contraindre l'appendice contre la tige afin d'assurer l'étanchéité entre eux,
  • la pompe comprend un manchon muni d'une paroi support sur laquelle repose au moins en partie la membrane déformable,
  • la tige de guidage s'étend dans le manchon depuis la paroi support,
  • la tige traverse axialement la chambre de pompage,
  • la pompe comprend un bouton-poussoir doté du conduit de distribution du produit,
  • le bouton-poussoir comprend une ouverture de sortie du produit en communication avec le conduit de distribution,
  • le bouton-poussoir est formé en matériau de type polypropylène,
  • le manchon comprend des moyens de guidage du bouton poussoir,
  • l'appendice est inséré dans le conduit de distribution,
  • l'appendice comprend une extrémité enserrant la tige de manière à créer ladite force de friction,
  • la paroi support comprend l'orifice d'entrée de la chambre,
  • l'orifice d'entrée est un trou traversant,
  • la membrane est munie d'une collerette recouvrant l'orifice d'entrée de manière à former un clapet d'entrée de la chambre,
  • ladite pompe comprend des moyens de maintien de la membrane sur la paroi support,
  • le manchon comprend un cylindre interne et un cylindre externe concentriques,
  • le manchon comprend un fond amovible portant ladite paroi support,
  • le cylindre interne comprend un cran de maintien de la membrane,
  • la membrane est munie d'un rebord agencé pour être bloquée par le cran de maintien,
  • le bouton-poussoir comprend un corps cylindrique configuré pour se déplacer entre les cylindres interne et externe du manchon,
  • le manchon comprend un tube plongeur destiné à être introduit dans le réservoir du réceptacle,
  • le tube plongeur débouche sur l'orifice d'entrée de la chambre.
According to different embodiments of the invention, which can be taken together or separately:
  • the membrane is made of a single elastic material,
  • the membrane is formed from a polymer material, for example a thermoplastic elastomer of the TPE type,
  • the dome has a rounded base and a top,
  • the longitudinal axis of the membrane passes substantially through the center of the base and through the top of the dome,
  • the rod passes through the dome from the base to the top,
  • the dome is configured to fold its top towards its base,
  • the dome defines the interior volume of the pumping chamber,
  • the deformation means is a distribution duct in contact with the membrane,
  • the duct cooperates with the outlet orifice in a sealed manner to receive the product leaving the chamber
  • the rod comes out of the appendix in the distribution duct,
  • the rod has an appendix retaining head,
  • the dome is in slight elastic stress in the initial position,
  • the elastic stress of the dome makes it possible to force the appendix against the rod in order to ensure the seal between them
  • the pump comprises a sleeve provided with a support wall on which the deformable membrane rests at least in part,
  • the guide rod extends into the sleeve from the support wall,
  • the rod axially passes through the pumping chamber,
  • the pump includes a push-button fitted with the product dispensing duct,
  • the push-button comprises an outlet opening for the product in communication with the distribution duct,
  • the push button is formed of polypropylene type material,
  • the sleeve comprises means for guiding the push button,
  • the appendix is inserted into the distribution duct,
  • the appendage comprises one end enclosing the rod so as to create said frictional force,
  • the support wall comprises the inlet orifice of the chamber,
  • the inlet orifice is a through hole,
  • the membrane is provided with a collar covering the inlet orifice so as to form an inlet valve of the chamber,
  • said pump comprises means for maintaining the membrane on the support wall,
  • the sleeve comprises a concentric inner cylinder and an outer cylinder,
  • the sleeve comprises a removable bottom carrying said support wall,
  • the internal cylinder includes a membrane retaining notch,
  • the membrane is provided with a rim designed to be blocked by the retaining notch,
  • the push button comprises a cylindrical body configured to move between the inner and outer cylinders of the sleeve,
  • the sleeve comprises a dip tube intended to be introduced into the reservoir of the receptacle,
  • the dip tube opens onto the inlet of the chamber.

L'invention concerne aussi un réceptacle, notamment un flacon pour produit cosmétique, comprenant une pompe telle que mentionnée précédemment.The invention also relates to a receptacle, in particular a bottle for a cosmetic product, comprising a pump as mentioned above.

L'invention sera mieux comprise à la lumière de la description suivante qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter, accompagnée des dessins joints :

  • les figures 1 (a) à 1 (c) illustrant de façon schématique, des vues en perspective des éléments d'une pompe selon un premier mode de réalisation de l'invention,
  • les figures 2(a) à 2(e) illustrant de façon schématique, des vues en coupe montrant le fonctionnement de la pompe sur un réceptacle selon le premier mode de réalisation,
  • les figures 3(a) et 3(b) illustrant de façon schématique, des vues en coupe agrandies montrant le glissement de la membrane contre la tige,
  • la figure 4 illustrant de façon schématique, une vue en coupe agrandie montrant le fonctionnement d'un clapet d'entrée de la chambre,
  • la figure 5 illustrant de façon schématique, une vue en perspective d'un manchon selon une variante du premier mode de réalisation de l'invention,
  • la figure 6 illustrant de façon schématique, une vue en coupe du manchon selon la variante du premier mode de réalisation,
  • la figure 7 illustrant de façon schématique, une vue en coupe d'une pompe selon un deuxième mode de réalisation de l'invention,
  • la figure 8 illustrant de façon schématique, un passage de reprise d'air du deuxième mode de réalisation.
The invention will be better understood in the light of the following description which is given only as an indication and which is not intended to limit it, accompanied by the accompanying drawings:
  • the figures 1 (a) to 1 (c) schematically illustrating perspective views of the elements of a pump according to a first embodiment of the invention,
  • the figures 2 (a) to 2 (e) schematically illustrating sectional views showing the operation of the pump on a receptacle according to the first embodiment,
  • the figures 3 (a) and 3 (b) schematically illustrating enlarged sectional views showing the sliding of the diaphragm against the rod,
  • the figure 4 schematically illustrating an enlarged sectional view showing the operation of an inlet valve of the chamber,
  • the figure 5 schematically illustrating a perspective view of a sleeve according to a variant of the first embodiment of the invention,
  • the figure 6 schematically illustrating a sectional view of the sleeve according to the variant of the first embodiment,
  • the figure 7 schematically illustrating a sectional view of a pump according to a second embodiment of the invention,
  • the figure 8 schematically illustrating an air intake passage of the second embodiment.

L'invention concerne une pompe 1 pour réceptacle 10, notamment un flacon destiné à contenir un produit cosmétique. Dans un premier mode de réalisation représenté sur les figure 1 (a) à 1(c), et les figures 2 et 3, la pompe comprend un bouton-poussoir 2 (figure 1 (a)), une membrane 3 déformable (figure 1 (b)) et un manchon 4 (figure 1 (c)). Le bouton-poussoir 2 a pour fonction de permettre l'actionnement de la pompe 1 par un utilisateur. Le bouton-poussoir 2 a ici un corps 5 cylindrique munie d'une ouverture 6 de distribution du produit et d'une paroi supérieure 7 d'appui sur laquelle l'utilisateur exerce une pression pour actionner la pompe 1, le bouton-poussoir 2 s'insérant dans le manchon 4 pendant l'actionnement. Le bouton-poussoir 2 est par exemple formé en matériau de type polypropylène.The invention relates to a pump 1 for a receptacle 10, in particular a bottle intended to contain a cosmetic product. In a first embodiment shown in the figure 1 (a) to 1 (c) , and the figures 2 and 3 , the pump includes a push-button 2 ( figure 1 (a) ), a deformable membrane 3 ( figure 1 (b) ) and a sleeve 4 ( figure 1 (c) ). The function of the push-button 2 is to allow the actuation of the pump 1 by a user. The push-button 2 here has a cylindrical body 5 provided with an opening 6 for dispensing the product and an upper bearing wall 7 on which the user exerts pressure to actuate the pump 1, the push-button 2 inserting into the sleeve 4 during actuation. The push-button 2 is for example formed from a material of the polypropylene type.

La pompe comporte en outre une chambre 8 de pompage à volume variable définie au moins en partie par la membrane déformable 3. La pompe 1 fonctionne en faisant varier le volume de la chambre 8 par déformation élastique de la membrane entre un état initial représenté sur la figure 2 (a) dans lequel la chambre 8 a un volume maximal et un état déformé représenté sur la figure 2 (c) dans lequel le volume de la chambre 8 est minimal. La chambre 8 a une forme présentant un axe longitudinal à l'état initial, et a ici une forme de dôme 9 arrondi comprenant une base 11 circulaire et un sommet 12. L'axe longitudinal de la chambre 8 passe sensiblement par le centre de la base 11 et par le sommet 12 du dôme 9. La membrane 3 a en outre un appendice 13 surmontant le dôme 9, le volume intérieur du dôme 9 et de l'appendice 13 définissant la chambre 8 de pompage. La membrane 3 est ici formée d'une seule matière élastique, de préférence un matériau polymère, par exemple en élastomère thermoplastique de type TPE (pour « thermoplastic elastomer » en anglais). La membrane 3 est aussi munie à sa base 11 d'une collerette 14 interne, qui est destinée à positionner le dôme 9 dans le manchon 4 et à servir de clapet d'entrée de la chambre 8. L'axe longitudinal de la membrane 3 passe par le sommet 12 et l'appendice 13 et sensiblement par le centre de la base 11 du dôme 9. Un rebord 15 externe est agencé autour de la base 11 de la membrane 3, afin de servir de moyen de retenue de la membrane 3 dans le manchon 4.The pump further comprises a pumping chamber 8 with variable volume defined at least in part by the deformable membrane 3. The pump 1 operates by varying the volume of the chamber 8 by elastic deformation of the membrane between an initial state shown in the figure. figure 2 (a) in which the chamber 8 has a maximum volume and a deformed state shown in the figure 2 (c) in which the volume of chamber 8 is minimal. The chamber 8 has a shape having a longitudinal axis in the initial state, and here has the shape of a rounded dome 9 comprising a circular base 11 and a top 12. The longitudinal axis of the chamber 8 passes substantially through the center of the chamber. base 11 and by the top 12 of the dome 9. The membrane 3 also has an appendage 13 surmounting the dome 9, the interior volume of the dome 9 and of the appendix 13 defining the pumping chamber 8. The membrane 3 is here formed from a single elastic material, preferably a polymer material, for example a thermoplastic elastomer of the TPE type (for “thermoplastic elastomer” in English). The membrane 3 is also provided at its base 11 with an internal flange 14, which is intended to position the dome 9 in the sleeve 4 and to serve as an inlet valve for the chamber 8. The longitudinal axis of the membrane 3 passes through the top 12 and the appendage 13 and substantially through the center of the base 11 of the dome 9. An outer rim 15 is arranged around the base 11 of the membrane 3, in order to serve as a retaining means for the membrane 3 in the sleeve 4.

Sur la figure 1(c), le manchon 4 comprend un cylindre interne 16 et un cylindre externe 17 sensiblement concentriques, qui servent de moyens de guidage du bouton-poussoir 2. Ainsi, le corps 5 du bouton-poussoir peut se déplacer entre le cylindre interne 16 et le cylindre externe 17. Le manchon 4 est de plus doté de moyens de couplage 18 avec le réceptacle 10, avec par exemple un système d'encliquetage comme montré sur les figures 2 (a) à (e). Le système d'encliquetage est ici une bague agencée sur le manchon 4 et une contre-bague agencée sur le réceptacle 10, la bague étant encliquetée sous la contre-bague.On the figure 1 (c) , the sleeve 4 comprises an internal cylinder 16 and an external cylinder 17 which are substantially concentric, which serve as means for guiding the push button 2. Thus, the body 5 of the push button can move between the internal cylinder 16 and the external cylinder 17. The sleeve 4 is further provided with coupling means 18 with the receptacle 10, for example with a snap-in system as shown in the figures. figures 2 (a) to (e) . The latching system is here a ring arranged on the sleeve 4 and a counter-ring arranged on the receptacle 10, the ring being latched under the counter-ring.

Le manchon 4 est en outre muni d'une paroi support 19 sur laquelle la membrane déformable 3 repose au moins en partie. Ici, la base 11 du dôme 9 et la collerette 14 interne sont en contact avec la paroi support 19. Le cylindre interne 16 comprend de plus un cran 21 de maintien agencé sur la face interne du cylindre interne 16, de manière à bloquer la membrane 3 contre la paroi support 19. Le cran 21 retient le rebord 15 externe du dôme 9. La paroi support 19 du manchon 4 comporte aussi un trou 22 traversant qui définit un orifice d'entrée de la chambre 8 de pompage. Le trou 22 est recouvert par la collerette interne 14 de la membrane lorsque la membrane 3 est insérée dans le manchon 4, de manière à former un clapet d'entrée de la chambre 8. La collerette 14 est également élastique car fait du même matériau que la membrane 3. Ainsi, la collerette 14 peut se soulever pour laisser le produit entrer dans la chambre 8.The sleeve 4 is also provided with a support wall 19 on which the deformable membrane 3 rests at least in part. Here, the base 11 of the dome 9 and the internal flange 14 are in contact with the support wall 19. The internal cylinder 16 further comprises a retaining notch 21 arranged on the internal face of the internal cylinder 16, so as to block the membrane. 3 against the support wall 19. The notch 21 retains the outer rim 15 of the dome 9. The support wall 19 of the sleeve 4 also comprises a through hole 22 which defines an inlet orifice of the pumping chamber 8. The hole 22 is covered by the internal flange 14 of the membrane when the membrane 3 is inserted into the sleeve 4, so as to form an inlet valve for the chamber 8. The flange 14 is also elastic because it is made of the same material as the membrane 3. Thus, the collar 14 can be raised to allow the product to enter the chamber 8.

Une variante de réalisation d'un manchon 40 est représentée sur les figures 5 et 6. Ce manchon 40 est pourvu d'un fond amovible 41, et comprend notamment la paroi support 19 et la tige 20. L'élément 42, qui définit l'autre partie du manchon 40, et le fond 41 sont agencés pour pouvoir être assemblés. A cette fin, le fond 41 comprend une nervure 43 circonférentielle qui est bloquée par un cran d'encliquetage 44 disposé à l'intérieur de l'élément 42, ainsi que cela est représenté sur la figure 6.An alternative embodiment of a sleeve 40 is shown in the figures 5 and 6 . This sleeve 40 is provided with a removable bottom 41, and comprises in particular the support wall 19 and the rod 20. The element 42, which defines the other part of the sleeve 40, and the bottom 41 are arranged to be able to be assembled. To this end, the bottom 41 comprises a circumferential rib 43 which is blocked by a latching catch 44 disposed inside the element 42, as is shown in the figure. figure 6 .

Pour déformer la membrane 3, la pompe 1 comprend un moyen de déformation disposé à l'extérieur de la chambre 8 et configuré pour exercer une pression sur la membrane 3 lorsque le bouton-poussoir 2 est actionné. Comme le montrent les figures 2 et 3, le moyen de déformation est un conduit de distribution 23 ayant une extrémité ouverte 26 en contact avec la membrane 3. Le conduit de distribution 23 fait ici partie du bouton-poussoir 2, le conduit s'étendant à l'intérieur du bouton-poussoir 2 depuis la face interne de la paroi supérieure 7. Le conduit de distribution 23 a pour fonction d'amener le produit sortant de la chambre 8 de pompage jusqu'à l'ouverture 6 du bouton-poussoir 2. Le conduit de distribution 23 est en contact étanche avec la membrane 3. Pour cela, l'appendice 13 est inséré dans le conduit de distribution 23, le conduit 23 reposant sur le dôme 9 de la membrane 3. L'appendice 13 est en outre muni d'un bourrelet 24 externe qui permet d'une part de le bloquer dans le conduit 23 et d'autre part d'assurer l'étanchéité du contact avec le conduit de distribution 23. Le bourrelet 24 fait le tour de l'appendice 13, ici à la jonction du dôme 9, et est dimensionné sensiblement aux dimensions de l'extrémité ouverte 26 du conduit de distribution 23.To deform the membrane 3, the pump 1 comprises a deformation means arranged outside the chamber 8 and configured to exert pressure on the membrane 3 when the push-button 2 is actuated. As the figures 2 and 3 , the deformation means is a distribution duct 23 having an open end 26 in contact with the membrane 3. The distribution duct 23 here forms part of the push-button 2, the duct extending inside the push-button 2 from the internal face of the upper wall 7. The function of the distribution duct 23 is to bring the product leaving the pumping chamber 8 to the opening 6 of the push-button 2. The distribution duct 23 is in sealed contact with the membrane 3. For this, the appendix 13 is inserted into the distribution duct 23, the duct 23 resting on the dome 9 of the membrane 3. The appendix 13 is also provided with a bead 24 external which allows on the one hand to block it in the duct 23 and on the other hand to ensure the sealing of the contact with the distribution duct 23. The bead 24 goes around the appendix 13, here at the junction of the dome 9, and is dimensioned substantially to the dimensions of the open end 26 of the distribution duct 23.

La chambre 8 comprend de plus un orifice de sortie du produit, l'orifice de sortie étant agencé sur la membrane 3, de préférence sur l'appendice 13. L'orifice de sortie est ici une fente 25 qui s'ouvre lorsque la chambre 8 de pompage se déforme. Le conduit de distribution 23 coopère avec la fente 25 pour recevoir le produit sortant de la chambre 8. La fente 25 est disposée dans le conduit de distribution 23 au-delà du bourrelet 24. Ainsi, lorsque le produit sort de la fente 25 dans le conduit de distribution 23, le produit est guidé dans le conduit de distribution 23.The chamber 8 further comprises an outlet orifice for the product, the outlet orifice being arranged on the membrane 3, preferably on the appendix 13. The outlet orifice is here a slot 25 which opens when the chamber. 8 pumping deforms. The distribution duct 23 cooperates with the slot 25 to receive the product leaving the chamber 8. The slot 25 is disposed in the distribution duct 23 beyond the bead 24. Thus, when the product leaves the slot 25 in the distribution pipe 23, the product is guided in the distribution pipe 23.

Selon l'invention, le manchon 4 est pourvu d'une tige 20 de guidage de la membrane 3, qui s'étend depuis la paroi support 19 du manchon 4. La tige 20 est disposée sensiblement selon l'axe des cylindres 16, 17 du manchon 4. La tige 20 de guidage traverse la membrane, de sorte que la membrane 3 glisse le long de la tige 20 lorsqu'elle subit ladite déformation, la tige 20 traversant la chambre 8 sensiblement selon l'axe longitudinal de la chambre 8. Ici, la tige 20 traverse le somment 12 du dôme 9 depuis sa base 11, ainsi que l'appendice 13, la tige sortant de l'appendice 13 dans le conduit de distribution 23. Le sommet 12 du dôme 9 et l'appendice 13 ont ainsi un canal traversant qui permet à la tige 20 de passer à travers la membrane 3.According to the invention, the sleeve 4 is provided with a rod 20 for guiding the membrane 3, which extends from the support wall 19 of the sleeve 4. The rod 20 is arranged substantially along the axis of the cylinders 16, 17. of the sleeve 4. The guide rod 20 passes through the membrane, so that the membrane 3 slides along the rod 20 when it undergoes said deformation, the rod 20 passing through the chamber 8 substantially along the longitudinal axis of the chamber 8 Here, the rod 20 passes through the top 12 of the dome 9 from its base 11, as well as the appendix 13, the rod emerging from the appendix 13 into the distribution duct 23. The top 12 of the dome 9 and the appendix 13 thus have a through channel which allows the rod 20 to pass through the membrane 3.

La tige 20 a pour fonction de guider la membrane 3 lorsqu'elle passe de l'état initial à l'état déformé, puis de l'état déformé à l'état initial. Le dôme 9 est ainsi configuré pour pouvoir replier son sommet 12 vers sa base 11, l'appendice 13 de la membrane 3 se déplaçant également vers la base 11 du dôme 9, le long de la tige 20.The function of the rod 20 is to guide the membrane 3 when it passes from the initial state to the deformed state, then from the deformed state to the initial state. The dome 9 is thus configured to be able to fold its top 12 towards its base 11, the appendage 13 of the membrane 3 also moving towards the base 11 of the dome 9, along the rod 20.

Pour que la fente 25, qui est fermée dans l'état initial (figure 3(a)), s'ouvre, l'appendice 13 comprend une extrémité 27 en contact serré autour de la tige 20. La tige comporte une tête de retenue 30 qui appuie sur l'extrémité 27 de l'appendice 13 en position initiale, de manière à provoquer une légère contrainte élastique du dôme. La contrainte élastique permet de contraindre l'extrémité 27 de l'appendice 13 contre la tige 20 afin d'assurer l'étanchéité entre eux.So that the slot 25, which is closed in the initial state ( figure 3 (a) ), opens, the appendix 13 comprises an end 27 in close contact around the rod 20. The rod has a retaining head 30 which presses on the end 27 of the appendix 13 in the initial position, so as to cause a slight elastic stress of the dome. The elastic constraint makes it possible to force the end 27 of the appendix 13 against the rod 20 in order to ensure the seal between them.

D'autre part, l'extrémité 27 de l'appendice 13 subit une friction contre la tige 20 lors du glissement de l'appendice 13 contre la tige 20, de manière à étirer légèrement l'appendice 13 et provoquer ainsi l'ouverture de la fente 25, tel que le représente la figure 3(b). Grâce à ce système de fonctionnement, l'invention permet d'ouvrir la fente 25 de sortie du produit, sans nécessiter de surpression dans la chambre de pompage. En effet, les pompes à membranes munies de fente de sortie connues fonctionnent en produisant une surpression à l'intérieur de la chambre, donc du produit cosmétique, pour provoquer l'ouverture de la fente. Or cette surpression risque d'endommager le produit, en provoquant par exemple un déphasage, ou bien la membrane, en accélérant son usure.On the other hand, the end 27 of the appendix 13 undergoes a friction against the rod 20 during the sliding of the appendix 13 against the rod 20, so as to stretch the appendix 13 slightly and thus cause the opening of the appendix. slot 25, as represented by figure 3 (b) . Thanks to this operating system, the invention makes it possible to open the product outlet slit 25, without requiring overpressure in the pumping chamber. In fact, diaphragm pumps provided with known outlet slits operate by producing an overpressure inside the chamber, and therefore of the cosmetic product, to cause the slit to open. However, this overpressure risks damaging the product, for example by causing a phase shift, or else the membrane, by accelerating its wear.

Sur les figures 2(a) à 2(c), lorsque la membrane 3 subit la déformation, la membrane 3 glisse le long de la tige 20 en se repliant, de sorte que le volume de la chambre diminue. La figure 2(a) montre la pompe 1 dans l'état initial, dans lequel la chambre 8 a son volume maximal. Lorsque le bouton-poussoir 2 est enfoncé par l'utilisateur, le conduit de distribution 23 appuie sur le dôme 9 qui commence à se déformer comme représenté sur la figure 2(a). Le haut du dôme 9 s'aplatit, tandis que la fente 25 s'ouvre. Ici, le dôme 9 se replie d'abord en s'abaissant vers la base 11, l'appendice 13 et la partie centrale du dôme 9 sur laquelle le tube de distribution 23 exerce une pression. Le produit contenu dans la chambre 8 commence à être expulsé par la fente 25. Sur la figure 2(c), le bouton-poussoir 2 est complètement enfoncé dans le manchon 4, ce qui provoque le repliement de la partie périphérique du dôme 9 en formant une couronne circulaire. La couronne est formée par deux couches de membrane repliées l'une contre l'autre et formant un coude. La chambre 8 atteint ainsi un volume minimal, de préférence le plus petit possible, pour que le maximum de produit sorte par la fente 25.On the figures 2 (a) to 2 (c) , when the membrane 3 undergoes the deformation, the membrane 3 slides along the rod 20 while folding, so that the volume of the chamber decreases. The figure 2 (a) shows the pump 1 in the initial state, in which the chamber 8 has its maximum volume. When the push-button 2 is pressed by the user, the distribution duct 23 presses on the dome 9 which begins to deform as shown in the figure. figure 2 (a) . The top of the dome 9 flattens, while the slot 25 opens. Here, the dome 9 first folds down by lowering towards the base 11, the appendage 13 and the central part of the dome 9 on which the distribution tube 23 exerts pressure. The product contained in chamber 8 begins to be expelled through slot 25. On the figure 2 (c) , the push-button 2 is fully inserted into the sleeve 4, which causes the peripheral part of the dome 9 to fold back, forming a circular crown. The crown is formed by two layers of membrane folded against each other and forming an elbow. Chamber 8 thus reaches a minimum volume of preferably as small as possible, so that as much product as possible comes out through slot 25.

Ainsi, grâce à la tige 20, la membrane 3 reste centrée autour de l'axe longitudinal du manchon 4. On évite ainsi le risque d'un repliement mal contrôlé de la membrane 3.Thus, thanks to the rod 20, the membrane 3 remains centered around the longitudinal axis of the sleeve 4. The risk of poorly controlled folding of the membrane 3 is thus avoided.

Les figures 2(d) et 2(e) montrent la déformation inverse de la membrane, de la configuration déformée à la configuration initiale. Lorsque le bouton-poussoir 2 n'est plus maintenu enfoncé par l'utilisateur, alors que la membrane est fortement déformée, le volume de la chambre est minimal et la membrane exerce une force de pression contre le conduit de distribution 23, cette force étant due au caractère élastique de la membrane 3 qui tend à retrouver sa forme initiale. Le bouton-poussoir 2 est ainsi repoussé vers l'extérieure du manchon 4 de manière télescopique. L'appendice 13 glisse le long de la tige 20 en sens inverse, ce qui referme la fente 25 à cause de la friction qui est due à l'extrémité 27 serrée autour de la tige 20. La chambre 8 étant fermée, une dépression est créée à l'intérieur de la chambre 8 car son volume augmente sans aspirer d'air.The figures 2 (d) and 2 (e) show the reverse deformation of the membrane, from the deformed configuration to the initial configuration. When the push-button 2 is no longer held down by the user, while the membrane is strongly deformed, the volume of the chamber is minimal and the membrane exerts a pressure force against the distribution duct 23, this force being due to the elastic nature of the membrane 3 which tends to regain its initial shape. The push-button 2 is thus pushed back towards the outside of the sleeve 4 in a telescopic manner. The appendage 13 slides along the rod 20 in the opposite direction, which closes the slot 25 because of the friction which is due to the end 27 clamped around the rod 20. The chamber 8 being closed, a vacuum is created. created inside the chamber 8 because its volume increases without sucking in air.

La dépression créée dans la chambre 8 force, d'une part, la collerette 14 du clapet d'entrée à se soulever, et provoque d'autre part, l'aspiration du produit dans la chambre à partir du réservoir du réceptacle, comme cela est représenté sur la figure 4. Lorsque la collerette 14 se soulève, le trou 22 est ouvert et met en communication la chambre 8 avec le réservoir du réceptacle. Le produit est ainsi aspiré par le trou 22 dans la chambre 8 pendant que le dôme 9 reprend sa forme initiale. Quand la membrane 3 a repris complètement sa forme initiale, la chambre 8 est rechargée en produit à distribuer, de sorte que la pompe 1 est à nouveau utilisable.The vacuum created in the chamber 8 forces, on the one hand, the flange 14 of the inlet valve to rise, and on the other hand, causes the product to be sucked into the chamber from the reservoir of the receptacle, like this is represented on the figure 4 . When the collar 14 rises, the hole 22 is open and places the chamber 8 in communication with the reservoir of the receptacle. The product is thus sucked through the hole 22 in the chamber 8 while the dome 9 returns to its initial shape. When the membrane 3 has completely resumed its initial shape, the chamber 8 is recharged with product to be dispensed, so that the pump 1 is usable again.

Dans le premier mode de réalisation, le réceptacle ne récupère pas d'air extérieur dans le réservoir pour compenser la sortie du produit hors de la chambre. Le réceptacle est, de préférence, pourvu d'un réservoir à volume variable, qui diminue au fur et à mesure que le produit est distribué. Ainsi, le produit est toujours à proximité de l'orifice d'entrée pour être aspiré dans la chambre.In the first embodiment, the receptacle does not recover outside air in the reservoir to compensate for the exit of the product out of the chamber. The receptacle is preferably provided with a variable volume reservoir, which decreases as the product is dispensed. Thus, the product is always close to the inlet opening to be sucked into the chamber.

Dans un deuxième mode de réalisation, représenté sur les figures 7 et 8, le manchon 40 comprend de plus un tube plongeur 28, le manchon 40 ayant sur ces figures un fond 41 amovible auquel est relié le tube plongeur 28. Le tube 28 est destiné à être plongé dans le réservoir du réceptacle 10, lorsque la pompe 1 est montée sur le réceptacle 10. Le tube 28 débouche dans la paroi support 19 du manchon 40 au niveau du trou 22 de l'orifice d'entrée de la chambre 8. Ainsi, lorsque la pompe 1 a été déclenchée, le produit monte dans le tube 28 par aspiration pour remplir à nouveau la chambre 8 de pompage.In a second embodiment, shown in figures 7 and 8 , the sleeve 40 further comprises a dip tube 28, the sleeve 40 having in these figures a removable bottom 41 to which the dip tube 28 is connected. The tube 28 is intended to be immersed in the reservoir of the receptacle 10, when the pump 1 is mounted on the receptacle 10. The tube 28 opens into the support wall 19 of the sleeve 40 at the level of the hole 22 of the inlet orifice of the chamber 8. Thus, when the pump 1 has been triggered, the product rises in the tube 28 by suction to refill the pumping chamber 8.

La pompe 1 comprend de plus un passage de reprise d'air pour permettre de compenser la dépression dans le réservoir induite par la montée du produit du réservoir du réceptacle dans la chambre. Comme le montre la figure 8, le passage de reprise d'air, qui est représenté par une flèche venant de l'extérieur de la pompe 1 dans le réservoir, passe d'abord entre le cylindre externe 17 du manchon 40 et le corps cylindrique 5 du bouton-poussoir 2, puis remonte entre le corps cylindrique 5 du bouton-poussoir et le cylindre interne 16 du manchon 40. Le passage redescend ensuite dans le cylindre interne 16 du manchon 40 et passe par une ouverture 29 agencée dans le fond 41 du manchon 40, l'ouverture 29 débouchant dans le réservoir. Ainsi, l'air circule par ce passage pour apporter de l'air dans le réservoir.The pump 1 further comprises an air intake passage to make it possible to compensate for the depression in the reservoir induced by the rise of the product from the reservoir of the receptacle into the chamber. As shown in the figure 8 , the air intake passage, which is represented by an arrow coming from outside the pump 1 in the tank, first passes between the outer cylinder 17 of the sleeve 40 and the cylindrical body 5 of the push-button 2 , then rises between the cylindrical body 5 of the push-button and the internal cylinder 16 of the sleeve 40. The passage then descends into the internal cylinder 16 of the sleeve 40 and passes through an opening 29 arranged in the bottom 41 of the sleeve 40, the opening 29 opening into the reservoir. Thus, the air circulates through this passage to bring air into the tank.

Dans ce mode de réalisation, le rebord externe de la base de la membrane 3 est prolongé contre le cylindre interne 16 du manchon 40 afin de former un clapet de reprise d'air, au-dessus de l'ouverture. Le clapet de reprise d'air ferme l'ouverture 29 en position initiale et est replié vers le bas du manchon 40. Lorsqu'une dépression est créée à l'intérieur du réservoir suite à l'actionnement de la pompe, le clapet se déplace comme le montre la petite flèche blanche sur la figure 8, de sorte que l'air peut rentrer dans le réservoir par l'ouverture 29. Lorsque la dépression est comblée, le clapet retrouve sa forme initiale grâce à l'élasticité de la membrane, et empêche ainsi l'air d'entrer ou le produit de sortir du réservoir.In this embodiment, the outer rim of the base of the membrane 3 is extended against the inner cylinder 16 of the sleeve 40 in order to to form an air return valve above the opening. The return air valve closes the opening 29 in the initial position and is folded down towards the bottom of the sleeve 40. When a vacuum is created inside the tank following actuation of the pump, the valve moves. as shown by the small white arrow on the figure 8 , so that air can enter the tank through opening 29. When the vacuum is filled, the valve returns to its initial shape thanks to the elasticity of the membrane, and thus prevents air from entering or product to come out of the tank.

Claims (9)

  1. Pump for receptacle (10), in particular a vial intended to contain a cosmetic product, said pump (1) comprising a pumping chamber (8) with variable capacity defined at least in part by a deformable membrane (3), the pump (1) functioning by varying the capacity of the chamber (8) by elastic deformation of the membrane (3) between an initial state wherein the chamber (8) has a maximal capacity and a deformed state wherein the capacity of the chamber (8) is minimal, the chamber (8) being equipped with an inlet orifice and an outlet orifice for the product, the pump (1) comprising a means of deformation of the membrane configured to exert pressure on the membrane (3), the pump further comprising a guiding rod (20) traversing the membrane (3), the membrane (3) having a dome (9) form presenting a longitudinal axis in the initial state and sliding along the rod (20) when it undergoes said deformation, the rod (20) being substantially positioned according to said longitudinal axis, the membrane (3) comprising an appendage (13) positioned at the summit of the dome (9), the rod (20) traversing the appendage such that the appendage slides along the rod during the deformation of the membrane (3), the outlet orifice being a slit (25) and being fitted on the appendage (13), the membrane (3) undergoing a friction force against the rod (20) during the deformation in such a way as to provoke the opening of the slit (25).
  2. Pump according the claim 1, wherein the appendage (13) comprises an end (27) encircling the rod (20) to create said friction force.
  3. Pump according to any one of the claims 1 to 2, wherein the means of deformation is a product dispensing conduit (23) in contact with the membrane (3), the conduit (23) cooperating with the outlet orifice in a sealed manner in order to receive the product coming out of the chamber (8).
  4. Pump according to the preceding claim, wherein the appendage (13) is inserted into the dispensing conduit (23).
  5. Pump according to the preceding claim, comprising a push button (2) equipped with the product dispensing conduit (23), the push button (2) comprising an opening for product dispensing (6) in communication with said dispensing conduit (23).
  6. Pump according to any one of the preceding claims, comprising a connecting sleeve (4) equipped with a support wall (19) on which the deformable membrane (3) at least partially rests, the guiding rod (20) extending from said support wall (19).
  7. Pump according to the preceding claim, wherein the support wall (19) comprises the inlet orifice of the chamber (8), the membrane (3) being equipped with a collar (14) recovering the inlet orifice in such a manner as to form a inlet valve for the chamber (8).
  8. Pump according to any one of the claims 6 or 7, comprising means to maintain the membrane (3) on the support wall (19).
  9. Receptacle (10), especially for a cosmetic product, comprising a pump (1) according to any one of the preceding claims.
EP17154357.2A 2016-02-25 2017-02-02 Pump for a receptacle, in particular a bottle for a cosmetic product, and a dispensing device comprising such a pump Active EP3210672B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1651581A FR3048192B1 (en) 2016-02-25 2016-02-25 PUMP FOR RECEPTACLE, IN PARTICULAR A BOTTLE OF COSMETIC PRODUCT, AND DISTRIBUTION DEVICE INCLUDING SUCH A PUMP

Publications (2)

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EP3210672A1 EP3210672A1 (en) 2017-08-30
EP3210672B1 true EP3210672B1 (en) 2021-05-12

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EP17154357.2A Active EP3210672B1 (en) 2016-02-25 2017-02-02 Pump for a receptacle, in particular a bottle for a cosmetic product, and a dispensing device comprising such a pump

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US (1) US10525493B2 (en)
EP (1) EP3210672B1 (en)
CN (1) CN107114900B (en)
BR (1) BR102017002831A2 (en)
FR (1) FR3048192B1 (en)

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FR3081756A1 (en) * 2018-05-31 2019-12-06 Albea Services METHOD FOR MANUFACTURING A PUMP GUIDE ROD
FR3090418A1 (en) * 2018-12-24 2020-06-26 Albea Services Pump dispensing a cosmetic product comprising multiple valves
FR3090415B1 (en) * 2018-12-24 2024-07-12 Albea Services Pump for cosmetic product bottle, waterproof in low pressure conditions
FR3090416B1 (en) * 2018-12-24 2024-07-12 Albea Services Cosmetic product bottle pump equipped with air purging means
CN114521185B (en) * 2019-07-23 2024-08-06 里克包装系统有限公司 All polymer pump dispenser with internal plug seal
FR3100993B1 (en) * 2019-09-23 2021-09-17 Albea Services Multiple valve foam dispensing system for one dispenser and associated foam dispenser
WO2021058284A1 (en) * 2019-09-23 2021-04-01 Silgan Dispensing Systems Le Treport Foam dispensing system having multiple valves for a dispenser, and associated foam dispenser
CN111572988B (en) * 2020-05-19 2024-06-07 深圳市通产丽星科技集团有限公司 Packaging container
CN113247441A (en) * 2021-05-06 2021-08-13 江门敬记塑胶厂有限公司 Full-plastic emulsion pump and distribution container
CN113371330A (en) * 2021-06-04 2021-09-10 江门敬记塑胶厂有限公司 Full-plastic vacuum pump distribution container
KR102689814B1 (en) * 2023-11-10 2024-07-29 민병선 Spring for Pumping Type Container and Pumping Type Container Therewith

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CN107114900B (en) 2021-10-15
EP3210672A1 (en) 2017-08-30
FR3048192A1 (en) 2017-09-01
US20170246648A1 (en) 2017-08-31
US10525493B2 (en) 2020-01-07
BR102017002831A2 (en) 2017-12-26
FR3048192B1 (en) 2020-10-23
CN107114900A (en) 2017-09-01

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