EP3674006A1 - Pumpe für flakon eines kosmetikprodukts, die unter niedrigdruckbedingungen dicht ist - Google Patents

Pumpe für flakon eines kosmetikprodukts, die unter niedrigdruckbedingungen dicht ist Download PDF

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Publication number
EP3674006A1
EP3674006A1 EP19215008.4A EP19215008A EP3674006A1 EP 3674006 A1 EP3674006 A1 EP 3674006A1 EP 19215008 A EP19215008 A EP 19215008A EP 3674006 A1 EP3674006 A1 EP 3674006A1
Authority
EP
European Patent Office
Prior art keywords
rod
pump
lip
membrane
outlet
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
EP19215008.4A
Other languages
English (en)
French (fr)
Other versions
EP3674006B1 (de
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 Services SAS
Original Assignee
Albea Services 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 Services SAS filed Critical Albea Services SAS
Publication of EP3674006A1 publication Critical patent/EP3674006A1/de
Application granted granted Critical
Publication of EP3674006B1 publication Critical patent/EP3674006B1/de
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
    • 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
    • B05B11/105—Sealing arrangements around pump actuating stem
    • 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
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting 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
    • B05B11/1061—Pump priming means
    • 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
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0063—Special features particularities of the flexible members bell-shaped flexible members

Definitions

  • the invention relates to a pump for a bottle of cosmetic product which remains sealed even under low pressure conditions.
  • the invention also relates to a bottle comprising such a pump.
  • Some cosmetic bottles are provided with a pump configured to aspirate the cosmetic contained in the tank 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 to allow its application.
  • the pump is often actuated by means of a push button on which the user exerts a pressure to trigger the operation of the pump.
  • a pump comprises in particular a metering chamber whose volume varies to allow the suction of the product into the chamber through an inlet orifice, when the volume increases, then its expulsion from 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 to the nozzle usually arranged on the push button.
  • a pump which is provided with a deformable membrane made in one piece, the deformation of which is guided to ensure optimal folding, without having to constrain the membrane in a compartment or give it a complex shape.
  • distributors of fluid products comprising an elastic membrane pump and a rod passing through the membrane at an elastic annular lip.
  • This annular lip in contact with the rod forms an outlet valve for the pump, the rod forming the seat of the valve.
  • the actuation button is held in high stop under the effect of the elasticity of the membrane, and the annular lip is in contact with the rod and ensures a tight closure of the outlet valve.
  • the button is pressed, the volume of the metering chamber of the pump decreases, which causes an increase in the pressure of the fluid within the chamber.
  • the outlet valve opens by deformation of the elastic lip and the product is dispensed.
  • the main drawback is that the outlet valve, in the pump rest position, does not offer a satisfactory seal under low pressure conditions, encountered for example during transport by plane. Under these conditions, the contact between the lip and the rod can be broken at least locally by deformation of the lip and of the product can spread, for example, in the user's handbag. In general, any vacuum condition outside the bottle may cause the outlet valve to open.
  • the present invention aims to overcome the drawback stated above, by means of a device making it possible to neutralize the outlet valve during any vacuum condition external to the bottle, so as to maintain an optimal seal of the bottle.
  • a pump for a bottle intended to contain a cosmetic product said pump comprising a metering chamber with variable volume defined at least in part by a deformable element, the pump operating by varying the volume of the chamber by deformation elastic of a membrane of the deformable element between an initial state in which the chamber has a maximum volume and a deformed state in which the volume of the chamber is minimal, the chamber being provided with an inlet orifice and a product outlet, the pump comprising a membrane deformation means configured to exert pressure on the membrane, the pump further comprising a guide rod passing through the deformable element, the deformable element sliding along the rod when the membrane undergoes said deformation, the deformable element comprising an exit lip delimiting said exit orifice and surrounding a section of the rod, said exit lip coming in ap then tight against the rod or deviating from the rod depending on the pressure in the chamber.
  • the pump is mainly characterized in that said rod comprises means for holding the outlet lip in sealed support against the rod when the membrane is in its initial state whatever the pressure in the chamber and whatever the pressure around the pump.
  • a “lip” corresponds to a flexible portion, often slightly thinned, of a tab or of a skirt, or of any other element, which tends to be pressed against a surface to achieve a seal.
  • the lip can deform, and in particular flex, so as to deviate from said surface under certain conditions, for example when there are pressure differences on either side of the lip, thus breaking the seal.
  • the main idea of this invention is to prevent the exit lip from being able to deform from the moment when the membrane is in its initial state, i.e. from the moment when the volume of the dosage is maximum.
  • the outlet lip is then held in sealed abutment against the rod, to avoid any deformation, whatever the pressure conditions. It can be, for example, an overpressure in the room, where it can be a depression outside. In all cases, the outlet lip is neutralized, and the outlet valve remains tightly closed. There is therefore no longer any risk that the outlet lip deviates from the rod and that the product involuntarily spills around the bottle.
  • the invention also relates to a bottle, in particular for a cosmetic product, comprising a pump as described above.
  • the invention relates to a pump 1 for a bottle comprising a reservoir (not illustrated) intended to contain a cosmetic product.
  • the pump 1 comprises a push button 2, a deformable element 3 and a sleeve 4 acting as a hoop.
  • the function of push button 2 is to allow actuation of pump 1 by a user.
  • the push button 2 here has a cylindrical body provided with a product distribution opening in which there is a nozzle 5, and an upper support wall 8 on which the user exerts pressure to actuate the pump 1 , the push button 2 being inserted into the sleeve 4 during actuation. Any other model of push button 2 could be used.
  • the pump 1 also comprises a metering chamber 25 with variable volume defined at least in part by the deformable element 3.
  • the pump 1 operates by varying the volume of the chamber 25 by elastic deformation of a membrane 33 of the deformable element 3 between an initial state represented on the figure 2 in which the chamber 25 has a maximum volume and a deformed state represented on the figure 4 in which the volume of the chamber 25 is minimal.
  • the chamber 25 has a shape having a longitudinal axis in the initial state.
  • the membrane 33 here has a rounded dome shape comprising a circular base 28 and a top 29.
  • the deformable element 3 also has a barrel 10 surmounting the dome.
  • the internal volume of the dome and of the barrel 10 define the metering chamber 25.
  • the longitudinal axis of the chamber 25 passes substantially through the center of the base 28, through the top 29 of the dome, and through the barrel 10.
  • the deformable element 3 is here formed of a single elastic material, preferably a polymer material, for example made of thermoplastic elastomer (TPE). It has more or less flexible zones depending on their thickness.
  • TPE thermoplastic elastomer
  • the sleeve 4 mainly consists of an upper hoop 4b, a lower hoop 4a, and a support 23 on which the membrane 33 is positioned.
  • an intermediate piece 7 is fixed between the deformable element 3 and the support 23 of the sleeve 4. This intermediate piece 7 is snapped both into the support 23 and into the deformable element 3.
  • the base 28 of the deformable element 3 is provided with an internal rim 19 adapted to snap under a first external rim of the intermediate piece 7.
  • the support 23 is provided with an internal rim capable of snapping under a second external rim of the piece intermediate 7. Any other type of connection can be considered. It should be noted that the support 23 and the intermediate piece 7 could constitute only one single piece.
  • the upper hoop 4b serves as a means for guiding the push button 2, and extends from this support 23.
  • the cylindrical body of the push button 2 slides inside the sleeve 4 and in particular against the peripheral wall of the upper hoop 4b.
  • the cylindrical body of the push button 2 is provided with a circumferential shoulder 30 capable of coming into abutment against an internal rim 31 located at the free end of the peripheral wall of the upper hoop 4b of the sleeve 4.
  • From the support 23 of the sleeve 4 also extends a lower hoop 4a directed towards the reservoir.
  • the inner surface of the peripheral wall of the lower hoop 4a includes a thread for example so that it can be screwed onto the neck of a reservoir.
  • the intermediate piece 7 has a wall 17 on which the deformable element 3 rests at least in part.
  • the deformable element 3 comprises an inlet lip 18 in the vicinity of the base 28 which rests on the wall 17.
  • This wall 17 comprises at least one through hole 27 which allows the product to pass from the reservoir to the metering chamber 25. This hole 27 is covered by the inlet lip 18 of the deformable element 3 when the latter is mounted on the intermediate part 7.
  • This inlet lip 18 is flexible and has a thinned thickness relative to the base 28, in order to present more flexibility. Thus, the inlet lip 18 can be lifted to let the product enter the chamber 25.
  • the wall 17 is oriented obliquely towards the inside of the sleeve 4, therefore a fortiori towards the inside of the deformable element 3, and forms a truncated cone near the rod.
  • the inlet lip 18 rests on the truncated cone, and thus goes back up inside the metering chamber 25.
  • the wall 17 is planar, or is oriented differently, as is for example the case on the figure 10 .
  • the wall 17 is inclined and forms a U-shaped well, limited near the axis of the pump by a wall 37 located near the rod, unlike the truncated cone.
  • the entry hole 27 is located on an inner peripheral face of said well.
  • the inlet lip 18 therefore covers this inclined wall 17, and covers the hole 27 for entering the product towards the metering chamber 25.
  • the presence of this well makes it possible to increase the volume of the metering chamber 25 and therefore the volume of the dose distributed.
  • the support 23 of the sleeve 4 has a central chimney 24 inside or outside of which can be inserted a product suction tube immersed inside the tank.
  • the product therefore passes inside this tube then arrives in a space created between the intermediate piece 7 and the support 23, then continues its path until it reaches the level of the hole 27 made in the wall 17 of the intermediate piece 7
  • the inlet lip 18 is raised, as we will see in the following description, the product can thus enter the interior of the metering chamber 25.
  • the wall 17 and the inlet lip 18 form what is called a product inlet valve.
  • the support wall 17 acts as a seat, and the inlet lip 18 consists of a deformable intake lip capable of being pressed or not against the seat depending on the pressure present inside the metering chamber 25.
  • the metering chamber 25 is sealed relative to the reservoir containing the product.
  • the sleeve 4 is provided with a rod 6 for guiding the deformable element 3, which extends from the intermediate part 7.
  • the rod 6 and the intermediate part 7 can consist of two different parts, or in one piece. In the embodiment presented, the rod 6 and the intermediate part 7 are two parts different.
  • a first end 15 of the rod 6 is fitted into a central bush 16 of the intermediate piece 7.
  • the upper hoop 4b, the lower hoop 4a, the support 23 and the chimney 24 form a single part called the sleeve 4.
  • the rod 6 and the intermediate part 7 could also be part of this sleeve 4 in one single piece. Conversely, it could be an assembly of several parts to form the sleeve 4.
  • the rod 6 is disposed substantially along the longitudinal axis of the deformable element 3, which is coaxial with the central axis of the sleeve 4 as well as the central axis of the push button 2.
  • This guide rod 6 passes through the element deformable 3, so that the latter slides along the rod 6 when it undergoes a deformation, the rod 6 passing through the chamber 25 substantially along the longitudinal axis of the chamber 25.
  • a second end of the rod 6 is located at level of the end of the barrel 10 of the deformable element 3. Indeed, the apex 29 of the dome and the barrel 10 form a through channel which allows the rod 6 to pass through this channel and therefore through the element deformable 3.
  • the upper end of the barrel 10 has a thinned part forming a flexible outlet lip 11 delimiting an outlet orifice for the fluid contained in the metering chamber 25. This exhaust lip 11 surrounds a section of the rod 6 and is pressed against the rod 6.
  • This rod 6 has the function of guiding the membrane 33 when it passes from the initial state to the deformed state, then from the deformed state to the initial state.
  • the membrane 33 is thus configured to be able to fold its top 29 towards its base 28, the barrel 10 of the deformable element 3 also moving towards the base 28 along the rod 6. Thanks to the rod 6, the membrane 33 remains centered around the longitudinal axis of the sleeve 4. This avoids the risk of poorly controlled folding of the membrane 33.
  • the outlet lip 11 and the rod 6 form a so-called fluid outlet valve.
  • the seat of this valve is constituted by the body of the rod 6 on which is pressed the outlet lip 11.
  • the outlet valve opens by elastic deformation of the outlet lip 11 and the product can thus escape from the metering chamber 25 to reach the nozzle 5 in order to be dispensed. More precisely, the deformation of the outlet lip 11 induces the creation of a few spaces between the rod 6 and the lip 11 through which the fluid can pass and therefore escape from the metering chamber 25.
  • the rod 6 is provided with means for holding the lip of outlet 11.
  • These holding means consist of a pinch rim 12 of the outlet lip 11, extending from the second end of the rod 6. More particularly, this second end of the rod 6 is provided with a head. rod 13 from which extends a pinched rim 12 bent in the direction of the first end 15 of the rod 6, so as to create an annular groove 28 between the rod body 6 and the pinch rim 12. The outlet lip 11 of the deformable element 3 can then be inserted inside this annular groove 28.
  • the membrane 33 When the metering chamber 25 has a maximum volume, the membrane 33 is deployed to the maximum and the outlet lip 11 is forcefully inserted into the groove 28.
  • the pinch flange 12 is inclined or curved so as to exert a force of plating the outlet lip 11 against the body of the rod 6. More specifically, the inner surface of the pinch rim 12 comes into contact with the outer surface of the outlet lip 11 to press the latter against the rod body 6. In this way, even in the event of a vacuum outside the bottle, the outlet lip 11 cannot be deformed because it is completely clamped and held inside the groove 28 by virtue of the nipping edge 12.
  • This pinch rim 12 extends over the entire circumference of the rod 6 so as to enclose the whole of the outlet lip 11.
  • the thickness of the outlet lip 11 is greater than the width of the groove 28, thus the outlet lip 11 is inserted by force without reaching the bottom 14 of the groove 28. This makes it possible to ensure good sealing.
  • the pump 1 comprises a deformation means disposed outside the chamber 25 and configured to exert pressure on the membrane 33 when the push button 2 is actuated.
  • This deformation means is a distribution duct 9 having an open end in contact with the membrane 33.
  • the distribution duct 9 is here part of the push button 2, the duct 9 extending inside the push button 2 from the inner face of the upper wall 8.
  • the function of the dispensing conduit 9 is to bring the product leaving the metering chamber 25 to the opening and the nozzle 5 of the push button 2.
  • the dispensing conduit 9 is in sealed contact with the deformable element 3. For this, the barrel 10 is inserted into the distribution duct 9, the duct 9 resting on the membrane 33.
  • the barrel 10 is further provided with a external bead 32 which makes it possible on the one hand to block it in the conduit 9 and on the other hand to ensure sealing in contact with the distribution conduit 9.
  • the bead 32 goes around the barrel 10, here at the junction with the membrane 33, and is dimensioned substantially to the dimensions of the open end of the distribution duct 9.
  • the pump 1 is in the rest position. In this position, the pump 1 is sealed. In fact, the elastic reaction of the prestressed membrane 33 tends to push the outlet lip 11 upwards and wedge it under the rod head 6, that is to say under the pinch rim 12. This outlet lip 11 is thus pinched in the rod head 6.
  • the product outlet valve is thus closed and sealed.
  • the metering chamber 25 has a maximum volume.
  • the circumferential shoulder 30 of the push-button 2 is in abutment against the internal rim 31 of the peripheral wall of the upper hoop 4b of the sleeve 4.
  • the inlet lip 18 of the deformable element 3 rests tightly on the wall 17 of the intermediate part 7. The product inlet valve is thus closed.
  • a user presses the push button 2.
  • the push button 2 then slides inside the sleeve 4 and goes towards the support 23 of the sleeve 4. In its travel, the push button 2 causes the barrel to descend 10 of the deformable element 3 in the direction of the support 23.
  • the outlet lip 11 slides along the rod 6 and is placed at a distance from the rod head 13. The outlet lip 11 is therefore no longer engaged with the nipping edge 12.
  • the distribution duct 9 of the push button 2 presses in parallel on the membrane 33 so as to deform it by folding it inwards.
  • the top of the dome of the membrane 33 thus flattens.
  • the volume of the metering chamber 25 thus begins to decrease and the pressure increases in the metering chamber 25.
  • This overpressure in the metering chamber 25 results in the deformation of the outlet lip 11, which moves away from the rod 6 at beyond a threshold constraint, which is represented by small arrows.
  • the product under pressure in the metering chamber 25 thus escapes via the outlet valve and enters the dispensing duct 9 of the push button 2 until it reaches the dispensing nozzle 5, which is represented by large arrows.
  • the diffusion of the product is thus conditioned to a minimum of pressure to arrive at the nozzle 5.
  • residual air is contained in the metering chamber 25.
  • This air may have been trapped in the tank when the dispensing system is fixed to the tank filled with product if it is an airless pump, that is to say without return air, or this air can come from an air return system if it is an atmospheric pump, that is to say with air in the tank, or this air may be present in the suction tube before first use.
  • a purge system has therefore been provided in the form of at least one axial relief pressure groove 26 which extends along a section of the rod 6. In the present case, it is the section against which the outlet lip 11 is in contact when the membrane 33 is compressed to the maximum and the push-button 2 is in abutment against the support 23 of the sleeve 4.
  • the outlet lip 11 is not in contact with the rod body 6, in this case with the bottom of the groove 26, and a small space is created between the outlet lip 11 and the bottom of the groove 26, space through which the residual air from the metering chamber 25 can escape.
  • axial grooves 26 can be replaced by axial ribs.
  • the exit lip 11 is placed at a distance from the rod body when it passes over a rib. A space is then created between the outlet lip 11 and the rod body to the right and to the left of the rib.
  • a single decompression groove 26 is sufficient to allow the air to escape. It is also possible to envisage two, three, four, or n grooves 26.
  • Each axial groove 26 extends over an axial length at least greater than the length of the outlet lip 11 of the outlet valve, so that air can enter the groove 26. It is also essential that these grooves 26 open directly in the metering chamber 25 at the barrel 10 of the deformable element 3. It should be noted that the barrel 10 of the deformable element 3, excluding the output lip 11, has an internal diameter greater than the external diameter of the rod 6. Preferably, each axial groove 26 extends over an axial length corresponding to the total length of the barrel 10 of the deformable element 3.
  • the metering chamber 25 In the maximum activation position, the metering chamber 25, initially under overpressure, is in communication with the atmosphere. The pressure in the metering chamber 25 drops, which has the effect of immediately stopping the end of dispensing of product. This avoids dispensing ends comprising large drops, provided by conventional dispensing systems.
  • the user releases the pressure exerted on the push button 2, and the latter then begins its ascent to its rest position, thanks to the elastic reaction of the membrane 33.
  • the outlet lip 11 is also pushed by the membrane 33 in the direction of the rod head 6. This small stroke of the outlet lip 11, enters a low position in a section of the rod 6 with decompression grooves 26 and an intermediate position in a section of the rod 6 smooth and round without bleeding, allows slight suction at the outlet of nozzle 5 and to prevent a drop from forming at the outlet of nozzle 5.
  • the deformable element 3 is provided with an air intake lip 20 located in the vicinity of the base 28, and which cooperates with the support 23 of the sleeve 4. More particularly, the support 23 comprises an outer ring 21 and a ring interior 22, which surround the intermediate piece 7, as illustrated in figure 11 .
  • the inner ring 22 is discontinuous so as to form passages 34.
  • An annular gap 35 is formed between the two rings 21, 22.
  • the air intake lip 20 of the deformable element 3 is housed in this interstice 35 and is capable of pressing against the inner surface of the outer ring 21, so as to form an air intake valve, the outer ring 21 then forming a seat against which the air intake lip 20 is tightly pressed.
  • This lip 20 is thinned and is therefore flexible. Plating the return air lip 20 against the outer ring 21 makes it possible to produce an air seal between the outside of the tank and the inside of the tank.
  • the admission of product into the metering chamber 25 leads to a depression in the reservoir containing the product, which causes an air suction permitted via this return valve. air.
  • the air intake will tend to move the air intake lip 20 away from the outer ring 21 and bring it closer to the inner ring 22 (as illustrated by small arrows).
  • the seal is thus broken, and air can pass between the air intake lip 20 and the outer ring 21, then in the passages 34 of the inner ring 22, then between the intermediate part 7 and the support of the sleeve 4 until reaching the reservoir.
  • the air initially comes from outside the bottle and passes between the push-button 2 and the sleeve 4 before arriving at the level of the air return valve. This path is illustrated by a large arrow on the figure 7 .
  • pump 1 has returned to its initial resting state, as in figure 2 .
  • the elastic reaction of the prestressed membrane 33 tends to push the outlet lip 11 upwards and to wedge it under the rod head 6. This is thus pinched in the rod head 6.
  • the vacuum having stopped inside the metering chamber 25, the product inlet valve is closed, because the inlet lip 18 has returned to the hole 27 in the intermediate piece 7, due to the intrinsic elasticity of the material TPE of the deformable element 3.
  • the air intake lip 20 returns to its place against the outer ring 21.
  • the air intake valve is thus closed and the tank is airtight.
  • the dosing chamber 25 contains a new dose of product ready to be delivered.
  • the inlet lip, the outlet lip, and the air intake lip all have a flange shape since they extend peripherally in the deformable element which is a part of revolution.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
EP19215008.4A 2018-12-24 2019-12-10 Pumpe für flakon eines kosmetikprodukts, die unter niedrigdruckbedingungen dicht ist Active EP3674006B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1874127A FR3090415A1 (fr) 2018-12-24 2018-12-24 Pompe pour flacon de produit cosmétique, étanche en conditions de basse pression

Publications (2)

Publication Number Publication Date
EP3674006A1 true EP3674006A1 (de) 2020-07-01
EP3674006B1 EP3674006B1 (de) 2022-07-27

Family

ID=67001914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19215008.4A Active EP3674006B1 (de) 2018-12-24 2019-12-10 Pumpe für flakon eines kosmetikprodukts, die unter niedrigdruckbedingungen dicht ist

Country Status (4)

Country Link
US (1) US10926281B2 (de)
EP (1) EP3674006B1 (de)
CN (1) CN111348324A (de)
FR (1) FR3090415A1 (de)

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CN112810992A (zh) * 2021-02-07 2021-05-18 余姚市丹丹喷雾器有限公司 一种全塑按压泵
CN113247441A (zh) * 2021-05-06 2021-08-13 江门敬记塑胶厂有限公司 一种全塑乳液泵及分配容器
KR102572953B1 (ko) * 2021-12-31 2023-08-31 (주)성진코스메틱스 화장품 용기 및 화장품 용기용 펌핑부재

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US10926281B2 (en) 2021-02-23
CN111348324A (zh) 2020-06-30
EP3674006B1 (de) 2022-07-27
FR3090415A1 (fr) 2020-06-26
US20200197967A1 (en) 2020-06-25

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