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EP1127624B1 - Pump with a membrane acting as a spring and container with the same - Google Patents

Pump with a membrane acting as a spring and container with the same Download PDF

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Publication number
EP1127624B1
EP1127624B1 EP01400455A EP01400455A EP1127624B1 EP 1127624 B1 EP1127624 B1 EP 1127624B1 EP 01400455 A EP01400455 A EP 01400455A EP 01400455 A EP01400455 A EP 01400455A EP 1127624 B1 EP1127624 B1 EP 1127624B1
Authority
EP
European Patent Office
Prior art keywords
pump
fact
diaphragm
forming
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01400455A
Other languages
German (de)
French (fr)
Other versions
EP1127624A1 (en
Inventor
Philippe Bonningue
Alain Behar
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.)
LOreal SA
Original Assignee
LOreal SA
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 LOreal SA filed Critical LOreal SA
Publication of EP1127624A1 publication Critical patent/EP1127624A1/en
Application granted granted Critical
Publication of EP1127624B1 publication Critical patent/EP1127624B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1052—Actuation means
    • B05B11/1053—Actuation means combined with means, other than pressure, for automatically opening a valve during actuation; combined with means for automatically removing closures or covers from the discharge nozzle during actuation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1076—Traction springs, e.g. stretchable sleeve

Definitions

  • the present invention relates to a pump for dispensing a product, especially a cosmetic product.
  • the patent US 5,687,884 describes a pump comprising a suction valve formed by a lip of an elastically deformable membrane. This pump also comprises a discharge valve formed by a lip of a closure element located at a dispensing nozzle.
  • a membrane made of an elastomer is mounted on the support.
  • This membrane has a symmetrical central portion of revolution, sleeve-shaped open at its upper end and closed at its lower end.
  • the central duct of the pushbutton is inserted into the membrane until it bears against the bottom of the central part in the form of a sleeve.
  • the membrane constitutes an elastic return member for returning the push button to its initial position after dispensing a dose of product.
  • the membrane by pressing on the central duct isolates the pumping chamber and avoids a return of air therein.
  • the membrane thus plays the role of a discharge valve.
  • the membrane also acts as a suction valve.
  • Such a pump has the advantage of having only a small number of parts and therefore of being relatively inexpensive to manufacture.
  • the present invention aims to improve the reliability of operation of a pump of the type defined above, namely having a support assembly, to subject a container containing a product to be dispensed, a movable member defining with the support assembly a pumping chamber of variable volume and an elastically deformable membrane, secured to one of the support assembly and of the movable member, this membrane being arranged to deform elastically when the movable member is moved relative to the support, the pump further comprising a suction valve element, arranged to oppose the return of product into the container when the volume of the pumping chamber decreases and a discharge valve member arranged to oppose a return of air into the container as the volume of the pumping chamber increases.
  • the pump according to the invention is characterized in that the discharge valve element is formed by means of a shutter member separate from the membrane and in that the membrane is prestressed when the pump is at rest.
  • the membrane can act as a spring without fear of blockage of the movable member; the discharge valve element being distinct from the membrane, the latter is not likely to oppose the departure of the product leaving the pumping chamber.
  • the membrane being prestressed when the pump is at rest, it avoids any play at rest and reduces the risk of product leakage when transporting the pump.
  • the membrane comprises a central part in the form of a sleeve open at one end and closed at the opposite end, a central part against which the movable member bears.
  • the movable member comprises a first and a second movable parts relative to each other, the first part defining with the support assembly the pumping chamber of variable volume, the second part being movable relative to the first part between on the one hand a relative distribution position in which it is able to drive the first part in the direction of a decrease of the volume of the pumping chamber and secondly a relative suction position in which it is capable of driving the first part in the direction of an increase in the volume of the pumping chamber, the shutter member belonging to the second part, the first part comprising a passage for the circulation of the product towards a dispensing nozzle, the shutter member being movable relative to the first part between a relative position of shutter in which it closes said passage and a relative dispensing position in which it stops closing said passage.
  • the shutter member is in its relative closure position when the second portion of the movable member is in its relative suction position and the shutter member is in its relative dispensing position when the second part of the movable member is in its relative distribution position.
  • the shutter member bears on the membrane.
  • the shutter member advantageously bears against the bottom of this central portion.
  • the aforementioned passage is advantageously defined by a chimney engaged inside this central portion.
  • the shutter element advantageously comprises a rod fixed at one end to the second part of the movable member, this rod extending inside the aforementioned chimney and being provided at the opposite end with a needle portion, adapted to apply sealingly on the chimney to seal.
  • At least one of the first and second parts of the movable member comprises a sealing lip adapted to be sealingly applied to the other part during the relative movement of the two parts.
  • the relative movement of the two parts of the movable member can be made without fear of product leakage.
  • this sealing lip is formed on the first part, at one end of the aforementioned passage.
  • the first part of the movable member is snapped into the support assembly.
  • This first part advantageously corresponds to the lower part of a push button comprising two telescopic parts.
  • the support assembly includes an insert on which the membrane is mounted.
  • the membrane comprises a peripheral portion defining a groove for its mounting on the insert.
  • the insert comprises a suction valve made in one piece by molding plastic material.
  • the peripheral portion of the membrane comprises a flexible lip forming a suction valve
  • the support assembly comprising one or more openings allowing the product to reach the pumping chamber when the volume thereof increases, this or these openings being closed by the flexible lip when the volume of the pumping chamber decreases.
  • the invention also relates to a container equipped with a pump as defined above.
  • the pump 10 comprises a static assembly 11 comprising a support 12 and an insert 30.
  • the support 12 comprises a tubular skirt 12a of X axis, provided at its upper end with a flange 13, the latter being directed radially outwards.
  • the tubular skirt 12a is applied radially to its outer surface 14 in a sealed manner on the radially inner surface of the neck 1 of the container R.
  • the rim 13 is extended radially outwards, at several points of its periphery, by mounting lugs 15 arranged to snap onto the annular bead 2.
  • the tubular skirt 12a is connected at its lower end, by a transverse wall 20, to a nozzle 16 for connection to a not shown dip tube, to allow use of the container R head up.
  • the tip 16 is extended upwards inside the support 12 by a conduit 17.
  • the tubular skirt 12a has in the lower part a recess 18 inwards, which is connected to a cylindrical wall 19 of axis X for mounting the insert 30.
  • the cylindrical wall 19 is connected below the transverse wall 20 above.
  • the support 12 is traversed, at the recess 18, by a hole 21 for allowing a return of air into the container R, as will be specified later.
  • tubular skirt 12a has, substantially at mid-height, an annular groove 22 formed on its radially inner surface.
  • This groove 22 is delimited below by an annular bead 23 and superiorly by a shoulder 24, which is located at the lower end of a ramp 25 inclined inwards and downwards.
  • the insert 30 has a tubular wall 31, of axis X, forcibly engaged at its lower end in the cylindrical wall 19.
  • the tubular wall 31 is divided in two, at its upper end, to form firstly on the radially outer side a sealing lip 32 and secondly on the side radially inner an extension 33, which is traversed at several locations of its periphery by openings 34 whose function will be explained later.
  • Longitudinal channels 35 are formed on the radially inner surface of the tubular wall 31 to the openings 34.
  • the extension 33 serves to attach a membrane 40 made of an elastomeric material, for example a nitrile or silicone elastomer.
  • This membrane 40 has a central portion in the form of a sleeve 41 and a flexible annular lip 42 at its upper part, this annular lip 42 surrounding the central portion in the form of a sleeve 41 and connected to the upper end thereof by a transverse wall 43 resting on the upper end edge of the extension 33 above.
  • the central part of the membrane 40 is closed by a bottom 45.
  • the height of the annular lip 42 is greater than that of the openings 34 and the annular lip 42 is arranged to apply, at rest, in a sealed manner on the radially outer surface of the extension 33, so as to prevent a return of product to the container R through the openings 34, as will be explained later.
  • the pump 10 comprises, in addition to the static assembly 11 which has just been described, a mobile assembly forming a push-button 50, comprising a lower part 51 partially engaged in the support 12 and an upper part 52 movable relative to the lower part 51 .
  • the lower part 51 has a mounting skirt 53 arranged to snap into the support 12.
  • This mounting skirt 53 has a radially inner surface 54 cylindrical in revolution about the axis X, on which the annular sealing lip 32 of the insert 30 is sealingly applied.
  • the mounting skirt 53 further comprises, on its radially outer surface, teeth 56 arranged to snap into the annular groove 22 of the support 12.
  • the lower end 57 of the mounting skirt 53 has an annular lip arranged to seal on the annular boss 23 when the teeth 56 rest against the shoulder 24, as shown in FIG. figure 1 .
  • the lower part 51 has, above the mounting skirt 53, a collar 60.
  • This neck 60 has, on its radially outer surface, an annular groove 61 which serves to hook the upper portion 52 of the push button.
  • the upper part 52 comprises a mounting skirt 63 provided at its lower end with an annular bead 64 arranged to snap into the groove 61 mentioned above.
  • the neck 60 forms with the mounting skirt 53 a shoulder 65 on which the upper portion 52 can bear.
  • the lower portion 51 has a transverse wall 66 which connects to the inner surface of the neck 60 above the annular groove 61.
  • This transverse wall 66 supports an annular lip 67 directed downwards and an annular lip 68 directed upwards, whose functions will be specified below.
  • the upper part 52 has an inner skirt 70 whose radially inner surface has a shoulder 73 at its lower end, this shoulder 73 defining axially a cylindrical surface 71 of revolution, on which the annular lip 68 is sealingly applied at its end. higher.
  • a cylindrical housing 74 is formed in the center of the inner skirt 70 to receive a shutter member 80 which will be described later.
  • the upper part 52 has a dispensing nozzle 77 communicating with the space defined by the inner skirt 70.
  • the annular lips 67 and 68 define a passage 90 allowing the product from the container to reach the dispensing tip 77.
  • the obturator element 80 has in the upper part a rod 81 fixed in the housing 74 and, in the lower part, an internally recessed portion 82 connected to the rod 81, forming a shoulder 83.
  • This shoulder 83 is arranged to bear against the lower end of the annular lip 67 when the pump is at rest, as shown in FIG. figure 1 .
  • the shutter member 80 then rests at its lower end 86 against the bottom 45 of the central portion 41 of the membrane 40.
  • the lower part 51 defines, with the membrane 40 and the shutter member 80, a variable volume pumping chamber 91.
  • the primed pump 10 is assumed.
  • the upper part 52 then drives the lower part 51 downwards.
  • the downward movement of the lower portion 51 causes a reduction in the volume of the pumping chamber 91 and the outlet of the product through the dispensing tip 77.
  • the flexible lip 42 is plate under the effect of the pressure of the product against the radially outer surface of the extension 33 when the volume of the pumping chamber decreases, and thus prevents the return of product to the container R.
  • the shutter member 80 presses on the bottom 45 of the membrane 40 and causes the elastic deformation of its central portion 41.
  • the membrane 40 behaves like a spring and gives the pump 10 a pleasant behavior for the user.
  • the shutter member 80 When the user releases the push button 50, the shutter member 80 is brought by the membrane 40 abutting against the annular lip 67, which closes the passage 90, then the lower portion 51 is brought upwards, this which has the effect of increasing the volume of the pumping chamber 91 and causing product suction therein, the flexible lip 42 moving away from the insert 30 to allow the product to flow through the openings 34.
  • the pump 110 shown on the Figures 3 to 5 differs from the pump 10 previously described essentially by the shape of the shutter member, that of the lower part of the push button and by the presence of a suction valve independent of the membrane.
  • the static assembly 11 of the pump 10 is replaced in this example by a static assembly 111 comprising an insert 130 which differs from the insert 30 previously described by the presence of a valve 95 made in one piece by molding of material plastic with the insert 130.
  • the body 95a of the valve 95 is connected to the insert 130 by flexible connections 96 which allow a certain mobility along the X axis.
  • the body 95a At rest, the body 95a is in abutment against the upper end of the conduit 17, as shown in FIGS. Figures 3 and 5 , and closes it.
  • the lower portion 51 of the push button 50 of the previous embodiment is replaced by a lower portion 151 which differs in that the lower annular lip 67 is replaced by a chimney 167 which extends inside. of the central portion of the membrane 40 and defines a passage 190 for the product.
  • the upper portion 152 includes a shutter member 180 which includes a rod 181 attached at one end to the housing 74, which stem 181 is provided at the other end with a needle member 183 having a frustoconical surface 183a converging upwardly.
  • the lower end of the chimney 167 is shaped to seal on this frustoconical surface 183a when the pump 110 is at rest, that is to say in the configuration shown in FIG. figure 3 .
  • the needle-shaped portion 183 rests permanently against the bottom 45 of the membrane 40.
  • the insert 130 differs from the insert 30 previously described in that the extension 33 is replaced by an extension 133 provided with openings 134 which extend over a height greater than that of the flexible lip 42 of the membrane 40.
  • the flexible lip 42 simply has, in the exemplary embodiment of the Figures 3 to 5 , an attachment function, and no longer an additional function of suction valve as was the case in the embodiment of the invention.
  • Figures 1 and 2 simply has, in the exemplary embodiment of the Figures 3 to 5 , an attachment function, and no longer an additional function of suction valve as was the case in the embodiment of the invention.
  • Figures 1 and 2 simply has, in the exemplary embodiment of the Figures 3 to 5 , an attachment function, and no longer an additional function of suction valve as was the case in the embodiment of the invention.
  • the operation of the pump 110 is as follows.
  • the lower end of the mounting skirt 63 comes to the end of a predetermined stroke bearing on the lower part 151.
  • the body 95a of the valve 95 being pressed against its seat formed by the upper end of the conduit 17, prevents the return of product to the container.
  • the central portion of the membrane deforms elastically, exerting a spring function.
  • the membrane 40 begins by causing the shutter member 180 to bear against the end bottom of the chimney 167 to close the passage 190.
  • the upper portion 152 is then driven upwardly by the membrane 40, which tends to return to its original shape.
  • the volume of the pumping chamber 191 increases and product suction from the container R.
  • the product flows through the conduit 17, the body 95a of the valve 95 away from the upper end of the conduit 17.
  • the lower portion 151 of the push button of the previous embodiment is replaced by the lower part 51 described above.
  • suction valve and the discharge valve can be made in other forms.

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

Abstract

A pump comprising a support-forming assembly for securing to a receptacle containing a substance to be dispensed, a moving member co-operating with the support-forming assembly to define a pump chamber of variable volume, and an elastically deformable diaphragm secured to one of the support-forming assembly and the moving member, the diaphragm being arranged so as to deform elastically when the moving member is displaced relative to the support, the pump further comprising a suction valve-forming element arranged to oppose any return of substance towards the receptacle while the volume of the pump chamber is decreasing, and a delivery valve-forming element arranged to oppose any entry of air into the receptacle while the volume of the pump chamber is increasing. The delivery valve-forming element is made by means of a shutter-forming element that is separate from the diaphragm.

Description

La présente invention concerne une pompe pour la distribution d'un produit, notamment cosmétique.The present invention relates to a pump for dispensing a product, especially a cosmetic product.

Le brevet US 5 687 884 décrit une pompe comportant un clapet d'aspiration formé par une lèvre d'une membrane élastiquement déformable. Cette pompe comporte également un clapet de refoulement formé par une lèvre d'un élément de fermeture situé au niveau d'un embout de distribution.The patent US 5,687,884 describes a pump comprising a suction valve formed by a lip of an elastically deformable membrane. This pump also comprises a discharge valve formed by a lip of a closure element located at a dispensing nozzle.

On connaît par le brevet français 2 728 809 une pompe comportant un bouton-poussoir monté à déplacement relativement à un support assujetti au récipient contenant le produit à distribuer, ce bouton-poussoir comprenant un conduit central cylindrique de révolution, pourvu d'ouvertures radiales à son extrémité inférieure, le support définissant autour de ce conduit une chambre de pompage annulaire, de volume variable.We know by the French patent 2,728,809 a pump comprising a push-button mounted to move relative to a support secured to the container containing the product to be dispensed, this push-button comprising a cylindrical central duct of revolution, provided with radial openings at its lower end, the support defining around this leads an annular pumping chamber of variable volume.

Une membrane réalisée dans un élastomère est montée sur le support.A membrane made of an elastomer is mounted on the support.

Cette membrane comporte une partie centrale symétrique de révolution, en forme de manchon ouvert à son extrémité supérieure et fermé à son extrémité inférieure.This membrane has a symmetrical central portion of revolution, sleeve-shaped open at its upper end and closed at its lower end.

Le conduit central du bouton-poussoir est inséré dans la membrane jusqu'à prendre appui contre le fond de la partie centrale en forme de manchon.The central duct of the pushbutton is inserted into the membrane until it bears against the bottom of the central part in the form of a sleeve.

La membrane constitue un organe de rappel élastique permettant de ramener le bouton-poussoir dans sa position initiale après la distribution d'une dose de produit.The membrane constitutes an elastic return member for returning the push button to its initial position after dispensing a dose of product.

En outre, au cours du mouvement de retour du bouton-poussoir, la membrane en se plaquant sur le conduit central isole la chambre de pompage et permet d'éviter une rentrée d'air dans celle-ci.In addition, during the return movement of the push button, the membrane by pressing on the central duct isolates the pumping chamber and avoids a return of air therein.

La membrane joue ainsi le rôle d'un clapet de refoulement. La membrane joue également le rôle d'un clapet d'aspiration.The membrane thus plays the role of a discharge valve. The membrane also acts as a suction valve.

Une telle pompe présente l'avantage de ne comporter qu'un faible nombre de pièces et donc d'être relativement peu coûteuse à fabriquer.Such a pump has the advantage of having only a small number of parts and therefore of being relatively inexpensive to manufacture.

Toutefois, cette pompe n'offre pas entière satisfaction, la société déposante ayant constaté une tendance du bouton-poussoir à se bloquer et/ou des mauvaises reconstitutions et distributions de dose.However, this pump is not entirely satisfactory, the applicant company having found a tendency of the push button to block and / or poor reconstitution and dose distribution.

La présente invention vise à améliorer la fiabilité du fonctionnement d'une pompe du type défini plus haut, à savoir comportant un ensemble formant support, à assujettir à un récipient contenant un produit à distribuer, un organe mobile définissant avec l'ensemble formant support une chambre de pompage de volume variable et une membrane élastiquement déformable, assujettie à l'un de l'ensemble formant support et de l'organe mobile, cette membrane étant agencée pour se déformer élastiquement lorsque l'organe mobile est déplacé relativement au support, la pompe comportant en outre un élément formant clapet d'aspiration, agencé pour s'opposer au retour de produit dans le récipient lorsque le volume de la chambre de pompage diminue et un élément formant clapet de refoulement, agencé pour s'opposer à une rentrée d'air dans le récipient lorsque le volume de la chambre de pompage augmente.The present invention aims to improve the reliability of operation of a pump of the type defined above, namely having a support assembly, to subject a container containing a product to be dispensed, a movable member defining with the support assembly a pumping chamber of variable volume and an elastically deformable membrane, secured to one of the support assembly and of the movable member, this membrane being arranged to deform elastically when the movable member is moved relative to the support, the pump further comprising a suction valve element, arranged to oppose the return of product into the container when the volume of the pumping chamber decreases and a discharge valve member arranged to oppose a return of air into the container as the volume of the pumping chamber increases.

La pompe selon l'invention se caractérise par le fait que l'élément formant clapet de refoulement est réalisé au moyen d'un élément formant obturateur distinct de la membrane et par le fait que la membrane est précontrainte lorsque la pompe est au repos.The pump according to the invention is characterized in that the discharge valve element is formed by means of a shutter member separate from the membrane and in that the membrane is prestressed when the pump is at rest.

Ainsi, dans l'invention, la membrane peut jouer le rôle d'un ressort sans qu'il y ait à craindre un blocage de l'organe mobile ; l'élément formant clapet de refoulement étant distinct de la membrane, cette dernière ne risque pas de s'opposer au départ du produit quittant la chambre de pompage.Thus, in the invention, the membrane can act as a spring without fear of blockage of the movable member; the discharge valve element being distinct from the membrane, the latter is not likely to oppose the departure of the product leaving the pumping chamber.

De plus, la membrane étant précontrainte lorsque la pompe est au repos, on évite tout jeu au repos et l'on réduit les risques de fuite de produit en cas de transport de la pompe.In addition, the membrane being prestressed when the pump is at rest, it avoids any play at rest and reduces the risk of product leakage when transporting the pump.

Dans la pompe connue décrite dans le brevet français 2 729 809 , la membrane se tend lorsque le bouton-poussoir est enfoncé et cette tension a pour conséquence de gêner éventuellement l'écoulement du produit quittant la chambre de pompage et de rendre l'amorçage difficile.In the known pump described in the French patent 2,729,809 , the membrane is stretched when the push button is depressed and this tension has the effect of possibly interfere with the flow of the product leaving the pumping chamber and make priming difficult.

Dans une réalisation particulière, la membrane comporte une partie centrale en forme de manchon ouvert à une extrémité et fermé à l'extrémité opposée, partie centrale contre laquelle prend appui l'organe mobile.In a particular embodiment, the membrane comprises a central part in the form of a sleeve open at one end and closed at the opposite end, a central part against which the movable member bears.

Toujours dans une réalisation particulière, l'organe mobile, c'est-à-dire par exemple le bouton-poussoir, comporte une première et une deuxième parties mobiles l'une par rapport à l'autre, la première partie définissant avec l'ensemble formant support la chambre de pompage de volume variable, la deuxième partie étant mobile par rapport à la première partie entre d'une part une position relative de distribution dans laquelle elle est apte à entraîner la première partie dans le sens d'une diminution du volume de la chambre de pompage et d'autre part une position relative d'aspiration dans laquelle elle est apte à entraîner la première partie dans le sens d'une augmentation du volume de la chambre de pompage, l'élément formant obturateur appartenant à la deuxième partie, la première partie comprenant un passage pour la circulation du produit vers un embout de distribution, l'élément formant obturateur étant mobile par rapport à la première partie entre une position relative d'obturation dans laquelle il ferme ledit passage et une position relative de distribution dans laquelle il cesse d'obturer ledit passage.Still in a particular embodiment, the movable member, that is to say for example the pushbutton, comprises a first and a second movable parts relative to each other, the first part defining with the support assembly the pumping chamber of variable volume, the second part being movable relative to the first part between on the one hand a relative distribution position in which it is able to drive the first part in the direction of a decrease of the volume of the pumping chamber and secondly a relative suction position in which it is capable of driving the first part in the direction of an increase in the volume of the pumping chamber, the shutter member belonging to the second part, the first part comprising a passage for the circulation of the product towards a dispensing nozzle, the shutter member being movable relative to the first part between a relative position of shutter in which it closes said passage and a relative dispensing position in which it stops closing said passage.

La fabrication d'une telle pompe est relativement aisée, car elle ne comporte qu'un faible nombre de pièces faciles à assembler.The manufacture of such a pump is relatively easy because it has only a small number of parts easy to assemble.

Dans une réalisation particulière, l'élément formant obturateur est dans sa position relative d'obturation lorsque la deuxième partie de l'organe mobile est dans sa position relative d'aspiration et l'élément formant obturateur est dans sa position relative de distribution lorsque la deuxième partie de l'organe mobile est dans sa position relative de distribution.In a particular embodiment, the shutter member is in its relative closure position when the second portion of the movable member is in its relative suction position and the shutter member is in its relative dispensing position when the second part of the movable member is in its relative distribution position.

De préférence, l'élément formant obturateur prend appui sur la membrane.Preferably, the shutter member bears on the membrane.

Lorsque celle-ci comporte une partie centrale en forme de manchon, l'élément formant obturateur prend avantageusement appui contre le fond de cette partie centrale.When the latter has a central portion in the form of a sleeve, the shutter member advantageously bears against the bottom of this central portion.

Toujours dans le cas où la membrane comporte une partie centrale en forme de manchon, le passage précité est avantageusement défini par une cheminée engagée à l'intérieur de cette partie centrale.Still in the case where the membrane has a central portion in the form of a sleeve, the aforementioned passage is advantageously defined by a chimney engaged inside this central portion.

Dans ce cas, l'élément formant obturateur comporte avantageusement une tige fixée à une extrémité sur la deuxième partie de l'organe mobile, cette tige s'étendant à l'intérieur de la cheminée précitée et étant munie à l'extrémité opposée d'une partie formant pointeau, apte à s'appliquer de manière étanche sur la cheminée pour l'obturer.In this case, the shutter element advantageously comprises a rod fixed at one end to the second part of the movable member, this rod extending inside the aforementioned chimney and being provided at the opposite end with a needle portion, adapted to apply sealingly on the chimney to seal.

Dans une réalisation particulière, l'une au moins des première et deuxième parties de l'organe mobile comporte une lèvre d'étanchéité apte à s'appliquer de manière étanche sur l'autre partie durant le déplacement relatif des deux parties.In a particular embodiment, at least one of the first and second parts of the movable member comprises a sealing lip adapted to be sealingly applied to the other part during the relative movement of the two parts.

Ainsi, le mouvement relatif des deux parties de l'organe mobile peut s'effectuer sans crainte de fuite de produit.Thus, the relative movement of the two parts of the movable member can be made without fear of product leakage.

De préférence, cette lèvre d'étanchéité est formée sur la première partie, à une extrémité du passage précité.Preferably, this sealing lip is formed on the first part, at one end of the aforementioned passage.

Dans une réalisation particulière, la première partie de l'organe mobile est encliquetée dans l'ensemble formant support.In a particular embodiment, the first part of the movable member is snapped into the support assembly.

Cette première partie correspond avantageusement à la partie inférieure d'un bouton-poussoir comprenant deux parties télescopiques.This first part advantageously corresponds to the lower part of a push button comprising two telescopic parts.

Dans une réalisation particulière, l'ensemble formant support comporte un insert sur lequel la membrane est montée.In a particular embodiment, the support assembly includes an insert on which the membrane is mounted.

Toujours dans une réalisation particulière, la membrane comporte une partie périphérique définissant une gorge servant à son montage sur l'insert.Still in a particular embodiment, the membrane comprises a peripheral portion defining a groove for its mounting on the insert.

Dans une réalisation particulière, l'insert comporte un clapet d'aspiration réalisé d'un seul tenant par moulage de matière plastique.In a particular embodiment, the insert comprises a suction valve made in one piece by molding plastic material.

En variante, la partie périphérique de la membrane comporte une lèvre flexible formant clapet d'aspiration, l'ensemble formant support comportant une ou plusieurs ouvertures permettant au produit de gagner la chambre de pompage lorsque le volume de celle-ci augmente, cette ou ces ouvertures étant obturées par la lèvre flexible lorsque le volume de la chambre de pompage diminue.In a variant, the peripheral portion of the membrane comprises a flexible lip forming a suction valve, the support assembly comprising one or more openings allowing the product to reach the pumping chamber when the volume thereof increases, this or these openings being closed by the flexible lip when the volume of the pumping chamber decreases.

L'invention a encore pour objet un récipient équipé d'une pompe telle que définie plus haut.The invention also relates to a container equipped with a pump as defined above.

D'autres caractéristiques et avantages de la présente invention ressortiront à la lecture de la description détaillée qui va suivre, d'exemples non limitatifs de mise en oeuvre de l'invention, et à l'examen du dessin annexé sur lequel :

  • la figure 1 est une vue schématique, en coupe axiale, d'une pompe conforme à un exemple de réalisation de l'invention,
  • la figure 2 représente la pompe de la figure 1 après un léger enfoncement du bouton-poussoir,
  • la figure 3 est une vue schématique en coupe axiale d'une pompe conforme à un deuxième exemple de réalisation de l'invention,
  • la figure 4 est une vue en coupe partielle selon le trait IV-IV de la figure 3,
  • la figure 5 est une vue analogue à la figure 3, après un léger enfoncement du bouton-poussoir,
  • la figure 6 représente en coupe axiale schématique une pompe conforme à un troisième exemple de réalisation de l'invention, et
  • la figure 7 est une vue analogue à la figure 6, après un léger enfoncement du bouton-poussoir.
Other characteristics and advantages of the present invention will appear on reading the following detailed description of non-limiting examples of implementation of the invention, and on examining the appended drawing in which:
  • the figure 1 is a schematic view, in axial section, of a pump according to an exemplary embodiment of the invention,
  • the figure 2 represents the pump of the figure 1 after a slight depression of the push button,
  • the figure 3 is a schematic view in axial section of a pump according to a second embodiment of the invention,
  • the figure 4 is a partial sectional view along line IV-IV of the figure 3 ,
  • the figure 5 is a view similar to the figure 3 after a slight depression of the push button,
  • the figure 6 represents in schematic axial section a pump according to a third embodiment of the invention, and
  • the figure 7 is a view similar to the figure 6 after a slight depression of the push button.

On a représenté sur les figures 1 et 2 une pompe 10 destinée à être montée sur un récipient R dont on n'a représenté sur les figures que l'extrémité supérieure du col 1, pourvue d'un bourrelet annulaire 2.We have shown on Figures 1 and 2 a pump 10 intended to be mounted on a container R which is shown in the figures as the upper end of the neck 1, provided with an annular bead 2.

La pompe 10 comporte un ensemble statique 11 comportant un support 12 et un insert 30.The pump 10 comprises a static assembly 11 comprising a support 12 and an insert 30.

Le support 12 comprend une jupe tubulaire 12a d'axe X, pourvue à son extrémité supérieure d'un rebord 13, ce dernier étant dirigé radialement vers l'extérieur. La jupe tubulaire 12a s'applique par sa surface radialement extérieure 14, de manière étanche, sur la surface radialement intérieure du col 1 du récipient R.The support 12 comprises a tubular skirt 12a of X axis, provided at its upper end with a flange 13, the latter being directed radially outwards. The tubular skirt 12a is applied radially to its outer surface 14 in a sealed manner on the radially inner surface of the neck 1 of the container R.

Le rebord 13 est prolongé radialement vers l'extérieur, en plusieurs points de sa périphérie, par des pattes de montage 15 agencées pour s'encliqueter sur le bourrelet annulaire 2.The rim 13 is extended radially outwards, at several points of its periphery, by mounting lugs 15 arranged to snap onto the annular bead 2.

La jupe tubulaire 12a se raccorde à son extrémité inférieure, par une paroi transversale 20, à un embout 16 destiné au raccordement à un tube plongeur non représenté, afin de permettre une utilisation du récipient R tête en haut.The tubular skirt 12a is connected at its lower end, by a transverse wall 20, to a nozzle 16 for connection to a not shown dip tube, to allow use of the container R head up.

L'embout 16 est prolongé vers le haut à l'intérieur du support 12 par un conduit 17.The tip 16 is extended upwards inside the support 12 by a conduit 17.

La jupe tubulaire 12a comporte en partie inférieure un décrochement 18 vers l'intérieur, lequel se raccorde à une paroi cylindrique 19 d'axe X servant au montage de l'insert 30.The tubular skirt 12a has in the lower part a recess 18 inwards, which is connected to a cylindrical wall 19 of axis X for mounting the insert 30.

La paroi cylindrique 19 se raccorde inférieurement à la paroi transversale 20 précitée.The cylindrical wall 19 is connected below the transverse wall 20 above.

Le support 12 est traversé, au niveau du décrochement 18, par un orifice 21 destiné à permettre une rentrée d'air dans le récipient R, comme cela sera précisé par la suite.The support 12 is traversed, at the recess 18, by a hole 21 for allowing a return of air into the container R, as will be specified later.

Par ailleurs, la jupe tubulaire 12a présente, sensiblement à mi-hauteur, une gorge annulaire 22 formée sur sa surface radialement intérieure.Furthermore, the tubular skirt 12a has, substantially at mid-height, an annular groove 22 formed on its radially inner surface.

Cette gorge 22 est délimitée inférieurement par un bourrelet annulaire 23 et supérieurement par un épaulement 24, lequel se situe à l'extrémité inférieure d'une rampe 25 inclinée vers l'intérieur et vers le bas.This groove 22 is delimited below by an annular bead 23 and superiorly by a shoulder 24, which is located at the lower end of a ramp 25 inclined inwards and downwards.

L'insert 30 comporte une paroi tubulaire 31, d'axe X, engagée à force à son extrémité inférieure dans la paroi cylindrique 19.The insert 30 has a tubular wall 31, of axis X, forcibly engaged at its lower end in the cylindrical wall 19.

La paroi tubulaire 31 se divise en deux, à son extrémité supérieure, pour former d'une part du côté radialement extérieur une lèvre d'étanchéité 32 et d'autre part du côté radialement intérieur un prolongement 33, lequel est traversé en plusieurs emplacements de sa périphérie par des ouvertures 34 dont la fonction sera expliquée plus loin.The tubular wall 31 is divided in two, at its upper end, to form firstly on the radially outer side a sealing lip 32 and secondly on the side radially inner an extension 33, which is traversed at several locations of its periphery by openings 34 whose function will be explained later.

Des canaux longitudinaux 35 sont formés sur la surface radialement intérieure de la paroi tubulaire 31 jusqu'aux ouvertures 34.Longitudinal channels 35 are formed on the radially inner surface of the tubular wall 31 to the openings 34.

Le prolongement 33 sert à l'accrochage d'une membrane 40 réalisée dans un matériau élastomère, par exemple un élastomère de nitrile ou de silicone.The extension 33 serves to attach a membrane 40 made of an elastomeric material, for example a nitrile or silicone elastomer.

Cette membrane 40 comporte une partie centrale en forme de manchon 41 et une lèvre annulaire flexible 42 à sa partie supérieure, cette lèvre annulaire 42 entourant la partie centrale en forme de manchon 41 et se raccordant à l'extrémité supérieure de celle-ci par une paroi transversale 43 venant en appui sur la tranche d'extrémité supérieure du prolongement 33 précité.This membrane 40 has a central portion in the form of a sleeve 41 and a flexible annular lip 42 at its upper part, this annular lip 42 surrounding the central portion in the form of a sleeve 41 and connected to the upper end thereof by a transverse wall 43 resting on the upper end edge of the extension 33 above.

La partie centrale de la membrane 40 est fermée par un fond 45.The central part of the membrane 40 is closed by a bottom 45.

La hauteur de la lèvre annulaire 42 est supérieure à celle des ouvertures 34 et la lèvre annulaire 42 est agencée pour s'appliquer, au repos, de manière étanche sur la surface radialement extérieure du prolongement 33, de manière à pouvoir empêcher un retour de produit vers le récipient R par les ouvertures 34, comme cela sera expliqué plus loin.The height of the annular lip 42 is greater than that of the openings 34 and the annular lip 42 is arranged to apply, at rest, in a sealed manner on the radially outer surface of the extension 33, so as to prevent a return of product to the container R through the openings 34, as will be explained later.

La pompe 10 comporte, outre l'ensemble statique 11 qui vient d'être décrit, un ensemble mobile formant bouton-poussoir 50, comprenant une partie inférieure 51 partiellement engagée dans le support 12 et une partie supérieure 52 mobile relativement à la partie inférieure 51.The pump 10 comprises, in addition to the static assembly 11 which has just been described, a mobile assembly forming a push-button 50, comprising a lower part 51 partially engaged in the support 12 and an upper part 52 movable relative to the lower part 51 .

La partie inférieure 51 comporte une jupe de montage 53 agencée pour s'encliqueter dans le support 12.The lower part 51 has a mounting skirt 53 arranged to snap into the support 12.

Cette jupe de montage 53 présente une surface radialement intérieure 54 cylindrique de révolution autour de l'axe X, sur laquelle s'applique de manière étanche la lèvre annulaire d'étanchéité 32 de l'insert 30.This mounting skirt 53 has a radially inner surface 54 cylindrical in revolution about the axis X, on which the annular sealing lip 32 of the insert 30 is sealingly applied.

La jupe de montage 53 comporte en outre, sur sa surface radialement extérieure, des dents 56 agencées pour s'encliqueter dans la gorge annulaire 22 du support 12.The mounting skirt 53 further comprises, on its radially outer surface, teeth 56 arranged to snap into the annular groove 22 of the support 12.

L'extrémité inférieure 57 de la jupe de montage 53 comporte une lèvre annulaire agencée pour s'appliquer de manière étanche sur le bossage annulaire 23 lorsque les dents 56 reposent contre l'épaulement 24, comme représenté sur la figure 1.The lower end 57 of the mounting skirt 53 has an annular lip arranged to seal on the annular boss 23 when the teeth 56 rest against the shoulder 24, as shown in FIG. figure 1 .

Ainsi, on évite une rentrée d'air dans le récipient lorsque la pompe est au repos.Thus, it prevents a return of air into the container when the pump is at rest.

La partie inférieure 51 comporte, au-dessus de la jupe de montage 53, un col 60.The lower part 51 has, above the mounting skirt 53, a collar 60.

Ce col 60 comporte, sur sa surface radialement extérieure, une gorge annulaire 61 qui sert à l'accrochage de la partie supérieure 52 du bouton-poussoir.This neck 60 has, on its radially outer surface, an annular groove 61 which serves to hook the upper portion 52 of the push button.

La partie supérieure 52 comporte une jupe de montage 63 pourvue à son extrémité inférieure d'un bourrelet annulaire 64 agencé pour s'encliqueter dans la gorge 61 précitée.The upper part 52 comprises a mounting skirt 63 provided at its lower end with an annular bead 64 arranged to snap into the groove 61 mentioned above.

Le col 60 forme avec la jupe de montage 53 un épaulement 65 sur lequel la partie supérieure 52 peut prendre appui.The neck 60 forms with the mounting skirt 53 a shoulder 65 on which the upper portion 52 can bear.

La partie inférieure 51 comporte une paroi transversale 66 qui se raccorde sur la surface intérieure du col 60 au-dessus de la gorge annulaire 61.The lower portion 51 has a transverse wall 66 which connects to the inner surface of the neck 60 above the annular groove 61.

Cette paroi transversale 66 supporte une lèvre annulaire 67 dirigée vers le bas et une lèvre annulaire 68 dirigée vers le haut, dont les fonctions seront précisées plus loin.This transverse wall 66 supports an annular lip 67 directed downwards and an annular lip 68 directed upwards, whose functions will be specified below.

La partie supérieure 52 comporte une jupe intérieure 70 dont la surface radialement intérieure présente un épaulement 73 à son extrémité inférieure, cet épaulement 73 délimitant axialement une surface 71 cylindrique de révolution, sur laquelle s'applique de manière étanche la lèvre annulaire 68 à son extrémité supérieure.The upper part 52 has an inner skirt 70 whose radially inner surface has a shoulder 73 at its lower end, this shoulder 73 defining axially a cylindrical surface 71 of revolution, on which the annular lip 68 is sealingly applied at its end. higher.

Un logement cylindrique 74 est réalisé au centre de la jupe intérieure 70 pour recevoir un élément formant obturateur 80 qui sera décrit plus loin.A cylindrical housing 74 is formed in the center of the inner skirt 70 to receive a shutter member 80 which will be described later.

La partie supérieure 52 comporte un embout de distribution 77 communiquant avec l'espace défini par la jupe intérieure 70.The upper part 52 has a dispensing nozzle 77 communicating with the space defined by the inner skirt 70.

Les lèvres annulaire 67 et 68 définissent un passage 90 permettant au produit provenant du récipient de gagner l'embout de distribution 77.The annular lips 67 and 68 define a passage 90 allowing the product from the container to reach the dispensing tip 77.

L'élément formant obturateur 80 comporte en partie supérieure une tige 81 fixée dans le logement 74 et, en partie inférieure, une partie évidée intérieurement 82 se raccordant à la tige 81 en formant un épaulement 83.The obturator element 80 has in the upper part a rod 81 fixed in the housing 74 and, in the lower part, an internally recessed portion 82 connected to the rod 81, forming a shoulder 83.

Cet épaulement 83 est agencé pour venir en appui contre l'extrémité inférieure de la lèvre annulaire 67 lorsque la pompe est au repos, comme représenté sur la figure 1. L'élément formant obturateur 80 repose alors par son extrémité inférieure 86 contre le fond 45 de la partie centrale 41 de la membrane 40.This shoulder 83 is arranged to bear against the lower end of the annular lip 67 when the pump is at rest, as shown in FIG. figure 1 . The shutter member 80 then rests at its lower end 86 against the bottom 45 of the central portion 41 of the membrane 40.

Lorsque l'élément formant obturateur 80 est en appui contre la lèvre annulaire 67 et que la partie inférieure 51 du bouton-poussoir est en appui par les dents 56 contre l'épaulement 24, la paroi tubulaire de la membrane 40 s'étendant entre le fond 45 et la paroi transversale 43 est tendue.When the shutter member 80 bears against the annular lip 67 and the lower portion 51 of the push button is supported by the teeth 56 against the shoulder 24, the tubular wall of the membrane 40 extending between the bottom 45 and the transverse wall 43 is stretched.

La partie inférieure 51 définit, avec la membrane 40 et l'élément formant obturateur 80, une chambre de pompage de volume variable 91.The lower part 51 defines, with the membrane 40 and the shutter member 80, a variable volume pumping chamber 91.

Le fonctionnement de la pompe 10 va être décrit ci-après.The operation of the pump 10 will be described below.

On suppose la pompe 10 amorcée.The primed pump 10 is assumed.

Lorsque la pompe 10 est au repos, le passage 90 est fermé par l'élément formant obturateur 80 et la partie inférieure 51 vient en appui par les dents 56 contre l'épaulement 24 sous l'action de rappel de la membrane 40.When the pump 10 is at rest, the passage 90 is closed by the shutter member 80 and the lower portion 51 abuts by the teeth 56 against the shoulder 24 under the return action of the membrane 40.

Lorsque l'utilisateur appuie sur la partie supérieure 52, cette dernière vient tout d'abord en appui par l'extrémité inférieure de la jupe de montage 63 contre l'épaulement 65 de la partie inférieure 51 et l'élément formant obturateur 80 libère le passage 90.When the user presses on the upper part 52, the latter first bears on the lower end of the mounting skirt 63 against the shoulder 65 of the lower part 51 and the shutter member 80 releases the passage 90.

La partie supérieure 52 entraîne ensuite en déplacement vers le bas la partie inférieure 51.The upper part 52 then drives the lower part 51 downwards.

Le déplacement vers le bas de la partie inférieure 51 entraîne une réduction du volume de la chambre de pompage 91 et la sortie du produit par l'embout de distribution 77.The downward movement of the lower portion 51 causes a reduction in the volume of the pumping chamber 91 and the outlet of the product through the dispensing tip 77.

La lèvre flexible 42 se plaque sous l'effet de la pression du produit contre la surface radialement extérieure du prolongement 33 lorsque le volume de la chambre de pompage diminue, et empêche ainsi le retour de produit vers le récipient R.The flexible lip 42 is plate under the effect of the pressure of the product against the radially outer surface of the extension 33 when the volume of the pumping chamber decreases, and thus prevents the return of product to the container R.

La course vers le bas de la partie inférieure 51 se poursuit jusqu'à ce que les dents 56 viennent en appui sur le bossage annulaire 23, ce qui a alors pour conséquence que la lèvre d'étanchéité 57 cesse de s'appliquer de manière étanche sur le bossage annulaire 23 et qu'une rentrée d'air peut s'effectuer dans le récipient R par l'orifice de reprise d'air 21, l'air circulant entre la jupe de montage 53 et le support 12.The downward stroke of the lower portion 51 continues until the teeth 56 bear on the annular boss 23, which then results in the sealing lip 57 ceasing to apply sealingly on the annular boss 23 and that an air intake can take place in the container R through the air intake port 21, the air flowing between the mounting skirt 53 and the support 12.

Durant le mouvement de descente du bouton-poussoir 50, l'élément formant obturateur 80 appuie sur le fond 45 de la membrane 40 et provoque la déformation élastique de sa partie centrale 41.During the descent movement of the push-button 50, the shutter member 80 presses on the bottom 45 of the membrane 40 and causes the elastic deformation of its central portion 41.

Ainsi, la membrane 40 se comporte comme un ressort et confère à la pompe 10 un comportement agréable pour l'utilisateur.Thus, the membrane 40 behaves like a spring and gives the pump 10 a pleasant behavior for the user.

Lorsque l'utilisateur relâche le bouton-poussoir 50, l'élément formant obturateur 80 est amené par la membrane 40 en butée contre la lèvre annulaire 67, ce qui ferme le passage 90, puis la partie inférieure 51 est ramenée vers le haut, ce qui a pour conséquence d'augmenter le volume de la chambre de pompage 91 et de provoquer une aspiration de produit dans celle-ci, la lèvre flexible 42 s'écartant de l'insert 30 pour permettre au produit de circuler par les ouvertures 34.When the user releases the push button 50, the shutter member 80 is brought by the membrane 40 abutting against the annular lip 67, which closes the passage 90, then the lower portion 51 is brought upwards, this which has the effect of increasing the volume of the pumping chamber 91 and causing product suction therein, the flexible lip 42 moving away from the insert 30 to allow the product to flow through the openings 34.

On a représenté sur les figures 3 à 5 une pompe 110 conforme à une première variante de mise en oeuvre de l'invention.We have shown on Figures 3 to 5 a pump 110 according to a first variant embodiment of the invention.

On conservera sur ces figures les mêmes numéros de référence pour désigner des éléments identiques à ceux qui viennent d'être déjà décrits.These figures will retain the same reference numbers to designate elements identical to those which have just been described.

La pompe 110 représentée sur les figures 3 à 5 diffère de la pompe 10 précédemment décrite essentiellement par la forme de l'élément formant obturateur, celle de la partie inférieure du bouton-poussoir et par la présence d'un clapet d'aspiration indépendant de la membrane.The pump 110 shown on the Figures 3 to 5 differs from the pump 10 previously described essentially by the shape of the shutter member, that of the lower part of the push button and by the presence of a suction valve independent of the membrane.

L'ensemble statique 11 de la pompe 10 est remplacé dans cet exemple par un ensemble statique 111 comportant un insert 130 qui diffère de l'insert 30 précédemment décrit par la présence d'un clapet 95 réalisé d'un seul tenant par moulage de matière plastique avec l'insert 130.The static assembly 11 of the pump 10 is replaced in this example by a static assembly 111 comprising an insert 130 which differs from the insert 30 previously described by the presence of a valve 95 made in one piece by molding of material plastic with the insert 130.

Le corps 95a du clapet 95 est relié à l'insert 130 par des liaisons souples 96 qui autorisent une certaine mobilité selon l'axe X.The body 95a of the valve 95 is connected to the insert 130 by flexible connections 96 which allow a certain mobility along the X axis.

Au repos, le corps 95a est en appui contre l'extrémité supérieure du conduit 17, comme représenté sur les figures 3 et 5, et l'obture.At rest, the body 95a is in abutment against the upper end of the conduit 17, as shown in FIGS. Figures 3 and 5 , and closes it.

Lorsque du produit est aspiré dans la chambre de pompage, le corps 95a s'écarte de l'extrémité supérieure du conduit 17 pour permettre le passage du produit, les liaisons 96 se déformant élastiquement.When product is sucked into the pumping chamber, the body 95a deviates from the upper end of the conduit 17 to allow the passage of the product, the links 96 deforming elastically.

Dans l'exemple de réalisation des figures 3 à 5, la partie inférieure 51 du bouton-poussoir 50 de l'exemple de réalisation précédent est remplacée par une partie inférieure 151 qui en diffère par le fait que la lèvre annulaire inférieure 67 est remplacée par une cheminée 167 qui s'étend à l'intérieur de la partie centrale de la membrane 40 et définit un passage 190 pour le produit.In the exemplary embodiment of Figures 3 to 5 , the lower portion 51 of the push button 50 of the previous embodiment is replaced by a lower portion 151 which differs in that the lower annular lip 67 is replaced by a chimney 167 which extends inside. of the central portion of the membrane 40 and defines a passage 190 for the product.

La partie supérieure 152 comporte un élément formant obturateur 180 qui comprend une tige 181 fixée à une extrémité dans le logement 74, cette tige 181 étant munie à l'autre extrémité d'un élément formant pointeau 183 présentant une surface tronconique 183a convergeant vers le haut.The upper portion 152 includes a shutter member 180 which includes a rod 181 attached at one end to the housing 74, which stem 181 is provided at the other end with a needle member 183 having a frustoconical surface 183a converging upwardly.

L'extrémité inférieure de la cheminée 167 est conformée pour s'appliquer de manière étanche sur cette surface tronconique 183a lorsque la pompe 110 est au repos, c'est-à-dire dans la configuration représentée sur la figure 3.The lower end of the chimney 167 is shaped to seal on this frustoconical surface 183a when the pump 110 is at rest, that is to say in the configuration shown in FIG. figure 3 .

La partie en forme de pointeau 183 repose en permanence contre le fond 45 de la membrane 40.The needle-shaped portion 183 rests permanently against the bottom 45 of the membrane 40.

L'insert 130 diffère de l'insert 30 précédemment décrit par le fait que le prolongement 33 est remplacé par un prolongement 133 pourvu d'ouvertures 134 qui s'étendent sur une hauteur supérieure à celle de la lèvre flexible 42 de la membrane 40.The insert 130 differs from the insert 30 previously described in that the extension 33 is replaced by an extension 133 provided with openings 134 which extend over a height greater than that of the flexible lip 42 of the membrane 40.

Ainsi, la lèvre flexible 42 a simplement, dans l'exemple de réalisation des figures 3 à 5, une fonction d'accrochage, et non plus une fonction supplémentaire de clapet d'aspiration comme cela était le cas dans l'exemple de réalisation des figures 1 et 2.Thus, the flexible lip 42 simply has, in the exemplary embodiment of the Figures 3 to 5 , an attachment function, and no longer an additional function of suction valve as was the case in the embodiment of the invention. Figures 1 and 2 .

Le fonctionnement de la pompe 110 est le suivant.The operation of the pump 110 is as follows.

On suppose que la chambre de pompage 191, définie par l'insert 130, la partie inférieure 151 et la cheminée 167, est remplie de produit.It is assumed that the pumping chamber 191, defined by the insert 130, the lower portion 151 and the chimney 167, is filled with product.

Lorsque l'utilisateur appuie sur la partie supérieure 152, cela provoque le déplacement vers le bas de l'élément formant obturateur 180 par rapport à la partie inférieure 151 et la partie formant pointeau 183 s'éloigne de l'extrémité inférieure de la cheminée 167.When the user presses the upper portion 152, this causes the shutter member 180 to move downwardly relative to the lower portion 151 and the needle portion 183 away from the lower end of the stack 167. .

L'extrémité inférieure de la jupe de montage 63 vient au terme d'une course prédéterminée en appui sur la partie inférieure 151.The lower end of the mounting skirt 63 comes to the end of a predetermined stroke bearing on the lower part 151.

Lorsque le mouvement de descente du bouton-poussoir se poursuit, le volume de la chambre de pompage 191 diminue et le produit se trouve expulsé en direction du passage 190 formé à l'intérieur de la cheminée 167.When the descent movement of the push button continues, the volume of the pumping chamber 191 decreases and the product is expelled towards the passage 190 formed inside the chimney 167.

Le corps 95a du clapet 95, en étant plaqué contre son siège constitué par l'extrémité supérieure du conduit 17, empêche le retour de produit vers le récipient.The body 95a of the valve 95, being pressed against its seat formed by the upper end of the conduit 17, prevents the return of product to the container.

Durant l'enfoncement du bouton-poussoir, la partie centrale de la membrane se déforme de manière élastique, exerçant une fonction de ressort.During the pressing of the push button, the central portion of the membrane deforms elastically, exerting a spring function.

Lorsque l'utilisateur relâche la partie supérieure 152, la membrane 40 commence par amener l'élément formant obturateur 180 en appui contre l'extrémité inférieure de la cheminée 167 pour fermer le passage 190.When the user releases the upper part 152, the membrane 40 begins by causing the shutter member 180 to bear against the end bottom of the chimney 167 to close the passage 190.

La partie supérieure 152 est ensuite entraînée en déplacement vers le haut par la membrane 40, laquelle tend à reprendre sa forme initiale.The upper portion 152 is then driven upwardly by the membrane 40, which tends to return to its original shape.

Le volume de la chambre de pompage 191 augmente et il se produit une aspiration de produit en provenance du récipient R.The volume of the pumping chamber 191 increases and product suction from the container R.

Le produit circule par le conduit 17, le corps 95a du clapet 95 s'écartant de l'extrémité supérieure du conduit 17.The product flows through the conduit 17, the body 95a of the valve 95 away from the upper end of the conduit 17.

On a représenté sur les figures 6 et 7 une variante de réalisation qui diffère du mode de réalisation des figures 3 à 5 par le fait que l'élément formant obturateur 180 est remplacé par l'élément formant obturateur 80 déjà décrit en référence aux figures 1 et 2.We have shown on Figures 6 and 7 an embodiment variant which differs from the embodiment of the Figures 3 to 5 in that the shutter member 180 is replaced by the shutter member 80 already described with reference to the Figures 1 and 2 .

La partie inférieure 151 du bouton-poussoir du mode de réalisation précédent est remplacée par la partie inférieure 51 précédemment décrite.The lower portion 151 of the push button of the previous embodiment is replaced by the lower part 51 described above.

Bien entendu, l'invention n'est pas limitée aux exemples de réalisation qui viennent d'être décrits.Of course, the invention is not limited to the embodiments which have just been described.

On peut notamment réaliser le clapet d'aspiration et le clapet de refoulement sous d'autres formes encore.In particular, the suction valve and the discharge valve can be made in other forms.

On peut ainsi, par exemple, réaliser le clapet d'aspiration au moyen d'une bille.It is thus possible, for example, to achieve the suction valve by means of a ball.

Claims (15)

  1. A pump (10; 110; 120) comprising a support-forming assembly (11, 30; 111; 130) for securing to a receptacle (R) containing a substance to be dispensed, a moving member (50) co-operating with the support-forming assembly to define a pump chamber (91; 191) of variable volume, and an elastically deformable diaphragm (40) secured to one of the support-forming assembly and the moving member (50), the diaphragm (40) being arranged so as to deform elastically when the moving member is displaced relative to the support, the pump further comprising a suction valve-forming element (42; 95) arranged to oppose any return of substance towards the receptacle while the volume of the pump chamber (91; 191) is decreasing, and a delivery valve-forming element (67, 80; 67, 180) arranged to oppose any entry of air into the receptacle while the volume of the pump chamber is increasing, the delivery valve-forming element (67, 80; 67, 180) being made by means of a shutter-forming element (80; 180) that is separate from the diaphragm, the pump being characterized by the fact that said diaphragm is prestressed when the pump is at rest, and by the fact that the diaphragm has a central portion (41) in the form of a sleeve that is open at one end and closed at its opposite end, the moving member (50) bearing against said central portion.
  2. A pump according to the preceding claim, characterized by the fact that the moving member (50) has first and second moving portions (51, 151; 52, 152) that are movable relative to each other, the first portion (51; 151) co-operating with the support-forming assembly to define the variable volume pump chamber, the second portion (52; 152) being movable relative to the first portion (51; 151) between firstly a dispensing position (Figure 2; Figure 5; Figure 7) in which it is suitable for entraining the first portion (51; 151) in the direction to decrease the volume of the pump chamber, and secondly in a position relating to suction (Figure 1; Figure 3; Figure 6) in which it is suitable for entraining the first portion (51; 151) in the direction to increase the volume of the pump chamber, the shutter-forming element (80; 180) being secured to the second portion (52; 152), the first portion (51; 151) having a passage (90; 190) to enable substance to flow towards a dispensing endpiece, the shutter-forming element (80; 180) being movable relative to the first portion between a position relating to closure (Figure 1; Figure 3; Figure 6) in which it closes said passage (90; 190), and a position relating to dispensing (Figure 2; Figure 5; Figure 7) in which it ceases to close said passage (90; 190).
  3. A pump according to the preceding claim, characterized by the fact that the shutter-forming element (80; 180) is in its position relating to closure (Figure 1; Figure 3; Figure 6) while the second portion (52; 152) of the moving member (50; 150) is in its position relating to suction, and by the fact that the shutter-forming element (80; 180) is in its position relating to dispensing (Figure 2; Figure 5; Figure 7) while the second portion (52; 152) of the moving member (50; 150) is in its position relating to dispensing.
  4. A pump according to either one of the two preceding claims, characterized by the fact that the shutter-forming element (80; 180) bears against the diaphragm (40).
  5. A pump according to the preceding claim, in which the diaphragm has a central portion (41) in the form of a sleeve, the pump being characterized by the fact that the shutter-forming element (80; 180) bears against the bottom wall (45) of the central portion of the diaphragm.
  6. A pump according to any one of claims 2 to 5, in which the diaphragm has a central portion (41) in the form of a sleeve, the pump being characterized by the fact that the passage (190) for substance outlet is defined by a chimney engaged inside the sleeve-forming central portion (41) of the diaphragm.
  7. A pump according to the preceding claim, characterized by the fact that the shutter-forming element has a rod (181) fixed at one end to the second portion (152) of the moving member (150), said rod extending inside the chimney and being provided at its opposite end with a valve-forming portion suitable for bearing in leakproof manner against the chimney so as to close it.
  8. A pump according to any one of claims 2 to 7, characterized by the fact that at least one of the first and second portions (51; 151) of the moving member includes a sealing lip (68) suitable for bearing in leakproof manner against the other portion (52; 152) during relative displacement of these two portions.
  9. A pump according to the preceding claim, characterized by the fact that the sealing lip (68) is formed on the first portion (51; 151) at one end of said substance outlet passage (90; 190).
  10. A pump according to any one of claims 2 to 9, characterized by the fact that the first portion (51; 151) is snap-fastened in the support-forming assembly.
  11. A pump according to any preceding claim, characterized by the fact that the support-forming assembly includes an insert (30; 130) on which the diaphragm (40) is mounted.
  12. A pump according to the preceding claim, characterized by the fact that the diaphragm (40) has a peripheral portion (42; 43) defining a groove enabling it to be mounted on the insert (30; 130).
  13. A pump according to either one of the two preceding claims, characterized by the fact that the insert (130) has a suction valve (95) integrally formed therewith by molding a plastic material.
  14. A pump according to any one of claims 1 to 12, characterized by the fact that the peripheral portion of the diaphragm includes a flexible lip (42) forming a suction valve, the support-forming assembly having one or more openings (34) enabling substance to reach the pump chamber (91) while its volume is increasing, said opening(s) (34) being closed by the flexible lip (42) while the volume of the pump chamber is decreasing.
  15. A receptacle fitted with a pump as defined in any preceding claim.
EP01400455A 2000-02-23 2001-02-21 Pump with a membrane acting as a spring and container with the same Expired - Lifetime EP1127624B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0002242A FR2805183B1 (en) 2000-02-23 2000-02-23 PUMP COMPRISING A SPRING-FORMING MEMBRANE AND CONTAINER THUS EQUIPPED
FR0002242 2000-02-23

Publications (2)

Publication Number Publication Date
EP1127624A1 EP1127624A1 (en) 2001-08-29
EP1127624B1 true EP1127624B1 (en) 2008-10-01

Family

ID=8847296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01400455A Expired - Lifetime EP1127624B1 (en) 2000-02-23 2001-02-21 Pump with a membrane acting as a spring and container with the same

Country Status (8)

Country Link
US (1) US6520385B2 (en)
EP (1) EP1127624B1 (en)
JP (1) JP3510862B2 (en)
AT (1) ATE409526T1 (en)
CA (1) CA2337542C (en)
DE (1) DE60135938D1 (en)
ES (1) ES2313934T3 (en)
FR (1) FR2805183B1 (en)

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CN101180133B (en) * 2005-05-20 2010-05-19 雷克斯姆分配系统股份公司 Needle valve pump for dispensing liquid product

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FR2852302B1 (en) * 2003-03-13 2006-07-14 Valois Sas FLUID PRODUCT DISPENSING MEMBER AND FLUID PRODUCT DISPENSING DEVICE COMPRISING SUCH AN ORGAN
US20040222243A1 (en) * 2003-05-08 2004-11-11 Saint-Gobain Calmar Inc. Low-cost, in-line trigger operated pump sprayer
FR2885890B1 (en) * 2005-05-20 2007-07-20 Rexam Dispensing Systems Sas DEVICE FOR DELIVERING AND ADMITTING A LIQUID PRODUCT
FR2918421B1 (en) * 2007-07-02 2009-10-23 Oreal MEMBRANE PUMP ADAPTABLE TO ALL TYPES OF CONTAINERS AND CONTAINERS COMPRISING SUCH A PUMP
DE102008024181B4 (en) 2008-05-19 2016-03-03 Megaplast Gmbh & Co. Kg donor
US8622254B2 (en) * 2009-01-14 2014-01-07 Sungil Kang Dispensing pump with resilient biasing member
US10473176B2 (en) 2018-01-03 2019-11-12 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10870123B2 (en) 2018-01-03 2020-12-22 Silgan Dispensing Systems Corporation Dispensing pump with locking structures and methods of using the same
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US11035429B2 (en) 2018-01-03 2021-06-15 Silgan Dispensing Systems Corporation Compression spring assembly and methods of using the same
US10794445B2 (en) 2018-01-03 2020-10-06 Silgan Dispensing Systems Corporation Dispensing pump with polymer compression spring assembly
US11312613B2 (en) 2018-09-27 2022-04-26 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same
US10526191B1 (en) 2018-09-27 2020-01-07 Silgan Dispensing Systems Corporation Dispensing tap and methods for using the same

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FR2746076B1 (en) * 1996-03-14 1998-05-07 DEVICE FOR SEALING AND CONTROLLING FLUID PRODUCT FOR A STORAGE CONTAINER AND A CONTAINER PROVIDED WITH SUCH A DEVICE
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Publication number Priority date Publication date Assignee Title
CN101180133B (en) * 2005-05-20 2010-05-19 雷克斯姆分配系统股份公司 Needle valve pump for dispensing liquid product

Also Published As

Publication number Publication date
CA2337542A1 (en) 2001-08-23
US20010054623A1 (en) 2001-12-27
ATE409526T1 (en) 2008-10-15
JP3510862B2 (en) 2004-03-29
CA2337542C (en) 2005-04-26
FR2805183B1 (en) 2002-12-27
EP1127624A1 (en) 2001-08-29
FR2805183A1 (en) 2001-08-24
JP2001263249A (en) 2001-09-26
US6520385B2 (en) 2003-02-18
DE60135938D1 (en) 2008-11-13
ES2313934T3 (en) 2009-03-16

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