EP1002735A1 - Pump and container incorporating the same - Google Patents

Pump and container incorporating the same Download PDF

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Publication number
EP1002735A1
EP1002735A1 EP99402872A EP99402872A EP1002735A1 EP 1002735 A1 EP1002735 A1 EP 1002735A1 EP 99402872 A EP99402872 A EP 99402872A EP 99402872 A EP99402872 A EP 99402872A EP 1002735 A1 EP1002735 A1 EP 1002735A1
Authority
EP
European Patent Office
Prior art keywords
membrane
pump according
movable member
pumping chamber
skirt
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
EP99402872A
Other languages
German (de)
French (fr)
Other versions
EP1002735B1 (en
Inventor
Philippe Bonningue
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
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Filing date
Publication date
Application filed by LOreal SA filed Critical LOreal SA
Publication of EP1002735A1 publication Critical patent/EP1002735A1/en
Application granted granted Critical
Publication of EP1002735B1 publication Critical patent/EP1002735B1/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
    • B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
    • 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
    • B05B11/1064—Pump inlet and outlet valve elements integrally formed of a deformable material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/1073—Springs
    • B05B11/1076—Traction springs, e.g. stretchable sleeve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—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
    • B05B11/1077—Springs characterised by a particular shape or material

Definitions

  • the present invention relates to a pump and a container containing a liquid, for example a cosmetic cream, equipped with such a pump.
  • a pump comprising a push button mounted on the move on a support subject to the container containing the product to distribute, the push button comprising a central cylindrical duct of revolution, provided with radial openings at its lower end, the support defining around this leads an annular pumping chamber, of variable volume.
  • a membrane made in an elastomer is mounted on the support. This membrane has a part symmetrical center of revolution, in the form of a sleeve open at its upper end and closed at its lower end. The central duct of the push button is inserted in the membrane until it bears against the bottom of the sleeve.
  • the membrane thus constitutes an elastic return member making it possible to return the push button to its initial position after dispensing a dose of product.
  • the membrane by sticking to the central duct isolates the pumping chamber and avoids a re-entry of air into it.
  • Such a pump has the advantage of having only a small number of parts and therefore to be relatively inexpensive to manufacture.
  • the present invention aims to improve the reliability of the operation of a pump of the type defined above, namely comprising a movable member mounted at displacement relative to a support, the movable member comprising a central duct into which the product to be distributed enters through at least one opening, the support defining with the movable member, around said central duct, a variable volume pumping, this pump further comprising a membrane having a sleeve-shaped central part open at its upper end and closed at its lower end, central part into which said central duct is inserted, the membrane being arranged so as to isolate the opening or openings of said central duct allowing the entry of the product and the pumping chamber when the volume of the latter increases and product is drawn into the pumping chamber.
  • At least one of the membrane and the duct central is shaped to prevent formation between the membrane and the central duct a sealed annular zone preventing the product contained in the pumping chamber to flow through said central duct when the volume of the pumping chamber decreases.
  • At least one of the membrane and the central duct is shaped to bear against the other of the membrane and the central duct in predetermined locations of its periphery, at least during the relative displacement of the movable member and the support.
  • At least one of the membrane and of the central duct comprises reliefs against which comes to bear the other of the membrane and the central duct, at less during the relative movement of the movable member and the support.
  • said reliefs are produced on the membrane in preferably being constituted by bosses equi-distributed around the axis of the part center of the membrane at its opening.
  • the membrane has a flexible lip capable on the one hand to isolate the pumping chamber from a source of product when the volume of said pumping chamber decreases and on the other hand to allow a return of product into said pumping chamber when the volume of the latter increases.
  • said flexible lip is connected with said central part of the membrane by forming a narrow annular groove, open downwards, and the support has an inner skirt bearing at its upper end in the bottom of said groove, for axially retaining the membrane when the movable member is moved down to decrease the volume of the pumping chamber.
  • the support has a double lip sealing, applying sealingly on a tubular skirt of the movable member, this tubular skirt being open downwards and extending around the central duct concentrically to the latter, this tubular skirt further delimiting radially towards outside the pumping chamber.
  • the aforementioned inner skirt is part of a patch on the rest of the support.
  • the aforementioned flexible lip has a rib annular by which it can be applied sealingly on the inner skirt of the support when the volume of the pumping chamber decreases or when the pump is at rest, said inner skirt communicating internally with the source of product and comprising above said annular rib openings allowing the product to gain the pumping chamber when the volume of the latter increases and that said flexible lip deviates from said inner skirt under the effect of the thrust of the product flowing to the pumping chamber.
  • the flexible lip comprises, above said annular rib, a thinned area.
  • the central duct of the movable member is provided, at its lower end, at least one radial opening.
  • the movable member constitutes a push button, said central duct being produced in one piece with a dispensing nozzle.
  • the tubular skirt of the movable member slides inside a support guide skirt, providing with said interior skirt of the support an annular groove open upwards, communicating by at least one orifice of air intake with the product source, the tubular skirt of the movable member applying sealingly on said guide skirt when the movable member is at rest and the volume of the pumping chamber is maximum.
  • the pump includes a return spring for recall the movable organ to an initial position after the distribution of a dose of product.
  • This return spring is advantageously constituted by a helical spring working in compression.
  • This spring is preferably arranged in the axis of the membrane, so as to apply by its upper end to the lower end of the central part of the membrane.
  • a return spring is advantageous because it facilitates the choice of the material which may constitute the membrane, since the latter may then not be or relatively weak prestress.
  • the invention also relates to a container equipped with a pump such as defined above.
  • FIG. 1 a container 1 having a body 2 forming reservoir, of which only the upper end is seen in the drawing, defining a neck 3 on which is snapped on a support 4.
  • the support 4 guides in sliding, along an axis X, a push button 5 and used to mount a removable protective cover 6, covering the front push button 5 the first use.
  • the support 4 includes a sealing skirt 7 which is applied in a sealed manner on the inside surface of the neck 3.
  • the sealing skirt 7 is extended radially, on the one hand towards the outside by fixing lugs 8 snapped onto an annular bead 9 of the neck 3, and other goes inward by a stepped wall 10 defining a nozzle 12 used for connection of a dip tube 13, partially shown in the drawing.
  • An outer skirt 15 and a guide skirt 16 are made in one piece by plastic molding with the sealing skirt 7, the fixing lugs 8 and the stepped wall 10.
  • the outer skirt 15 extends around the neck 3 of the container and has a shoulder 17 on which the protective cover 6 is supported.
  • the upper edge 18 of the outer skirt 15 retains the push button 5 at rest, as will be explained below.
  • the support 4 comprises an inner skirt 20 constituted by a part added, having a lower end 21 shouldered, forcibly engaged in the stepped wall 10.
  • the internal skirt 20 has a substantially tapered upper end, provided with openings 22, as can be seen more particularly in FIGS. 2 and 3.
  • openings 22 are in the example described in the form of slots oriented along the X axis, extended downward by grooves 25 extending over the radially inner surface of the inner skirt 20 until a step 26.
  • a double annular sealing lip 24 is produced in one piece with the inner skirt 20 by plastic molding.
  • the push button 5 has an outer skirt 30, provided at its end lower of teeth 31, the latter abutting against the upper edge 18 of the skirt outside 15 of the support 4 when the push button 5 is at rest in the high position, as shown in figure 1.
  • the push button 5 has a central duct 32, of axis X, and a skirt tubular 33 concentric, defining around the central duct 32 a pumping 34 annular.
  • the outer skirt 30, the tubular skirt 33 and the central duct 32 are produced in one piece by molding plastic material with a dispensing nozzle 35, communicating internally with the central duct 32.
  • the latter has, at its lower end, radial openings 36.
  • the lower end of the tubular skirt 33 forms a sealing lip 37, extending slightly radially outward, as shown more particularly in Figure 4.
  • the guide skirt 16 of the support 4 has a slight shrinkage in the lower part annular 41 on its radially inner surface.
  • the interior of the container is thus isolated from the ambient air, which is favorable to good conservation of the product.
  • An air intake orifice 42 is made in the bottom of this groove to allow air to re-enter the container as it is emptied.
  • the inner skirt 20 is used for mounting a membrane 50 having a part central unit 51 in the form of a sleeve, axis X, open at its upper end and closed at its lower end by a bottom 52.
  • This central part 51 is extended radially outwards by a lip flexible annular 53, as can be seen more particularly in FIGS. 5 and 6.
  • This flexible lip 53 forms, by connecting with the central part 51, a narrow annular groove 54 into which the inner skirt 20 is inserted at its end upper, until taking support by its free edge in the bottom of said groove.
  • the throat 54 has substantially the same profile as the upper end of the inner skirt 20.
  • the height of the flexible lip 53 is greater than that of the openings 22 and the flexible lip 53 has on its radially inner face, close to its end free, an annular rib 56 capable of being applied sealingly against the surface radially exterior of the interior skirt 20, as illustrated in FIG. 1.
  • the flexible lip 53 also has, above the rib 56, a wall thinned 58 intended to facilitate its deformation radially outwards, to allow to the product to gain the pumping chamber 34, as will be explained below.
  • the membrane 50 comprises, at the opening of its central part 51, non-symmetrical reliefs of revolution around the axis X, namely bosses 55 of which the function will be specified later.
  • these bosses 55 are three in number, being evenly distributed angularly around the X axis, as can be seen in Figure 6.
  • Each of these bosses 55 protrudes from the radially inner surface of the central part 51 along approximately a quarter of the height thereof from its upper end, and extends radially outward on the upper face of the membrane 50 to substantially above the groove 54, as can be seen in the figure 5.
  • Each of the bosses 55 further presents, when observed in section in a transverse section plane, a convex section towards the X axis, as shown in the figure 6.
  • the central conduit 32 of the push button 5 is inserted in the central part 51 of the membrane 50 until it bears, by its lower end, against the bottom 52 of the membrane 50, as illustrated in FIG. 1.
  • bosses 55 then apply, in the example described, against the surface cylindrical of revolution of the central duct 32. However, it is not necessary to in general, that the bosses 55 apply to the central duct 32 when the push button is at rest.
  • the double sealing lip 24 is applied sealingly to the surface radially inner of the tubular skirt 33, whatever the upward movement or down from push button 5.
  • the radially inner surface of the central part 51 of the membrane is slightly conical, converging downwards, for its part extending under the bosses 55 slightly above the upper end of the openings 36, then cylindrical of X axis revolution.
  • the support 4, the push button 5 and the membrane 50 constitute a pump the operation of which is as follows.
  • the central duct 32 drives down the bottom 52 of the membrane 50, which deforms elastically by stretching to accompany the movement of the duct central 32.
  • the pump is here assumed to be primed, i.e. the pumping chamber 34 is filled with product.
  • the flexible lip 53 is applied in a sealed manner on the inner skirt 20 during the downward movement of the push button 5.
  • the sealing lip 37 of the tubular skirt 33 of the push button 5 ceases, when it reaches the annular withdrawal 41 after a certain driving stroke of the push button 5, to apply in a sealed manner on the guide skirt 16, allowing communication between the inside of the container and the outside, via the air intake orifice 42 and the clearance existing between the guide skirt 16 and the tubular skirt 33.
  • the bosses 55 form passages between them for the product and prevent the formation of a sealed annular zone between the central duct 32 and the central part 51 of the membrane 50 which could not be overcome by the pressure of the product, so that the product can flow to the radial openings 36, the membrane 50 being able to move away slightly from the central duct in the vicinity of the upper end of the openings 36 under the effect of product pressure.
  • the bosses 55 also tend to keep the central duct 32 coaxial with the inner skirt 20 and to guarantee that the upper part of the membrane hung on the inner skirt 20.
  • the narrowness of the groove 54 ensures good adhesion of the membrane 50 on the inner skirt 20 and prevents the membrane 50 from being entrained, at its part upper, moving with the central duct 32.
  • the central part 51 of the membrane 50 isolates the radial openings 36 of the pumping chamber 34, and the depression which is created in the latter causes the separation of the flexible lip 53 and an arrival of product from the container.
  • the product then wins the pumping chamber 34 circulates by the grooves 25 of the inner skirt 20, along the central part 51 of the membrane 50, crosses the inner skirt 20 through the openings 22, then goes around the lip flexible 53 and rises outside of the latter as illustrated in FIG. 8.
  • This spring is housed inside the inner skirt 20, works in compression, and is supported at its lower end on the recess 26 and at its upper end on the underside of the bottom 52 of the membrane.
  • This valve can be produced for example by means of a ball 91 shown in broken line in Figure 8, the tip 12 serving as a seat.
  • Reliefs 92 are produced on the inner surface of the inner skirt to retain the ball 91 near its seat.
  • the ball 91 is chosen to be very rough so as to create a leak making it possible to do not block the downward movement of the central part of the membrane when distribution of a dose of product.
  • the ball 91 makes it possible to prime the pump by actuating a small number of times the push button.
  • the membrane can also be made of at least two different materials. Thus, a softer material can be used to make the flexible lip 53 than that used to produce the spring portion 51.
  • a helical spring is arranged around the central duct and bears at its lower end on the upper end of the membrane and at its upper end on the push button 5.

Landscapes

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

Abstract

The pump comprises a movable part having a central conduit (32) in which the product to be dispensed penetrates through a opening (36). The support defines a variable volume pumping chamber (34) around the central conduit. The pump has a membrane (50) with a central sleeve with its upper end open and lower end closed. The central conduit is inserted in the central part of the membrane which isolates the opening and the pumping chamber when the volume in this latter increases and the product is sucked into the pumping chamber.

Description

La présente invention concerne une pompe et un récipient contenant un liquide, par exemple une crème cosmétique, équipé d'une telle pompe.The present invention relates to a pump and a container containing a liquid, for example a cosmetic cream, equipped with such a pump.

On connaít par le brevet français 2.728.809 une pompe comportant un bouton-poussoir monté à déplacement sur un support assujetti au récipient contenant le produit à distribuer, le 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. Une membrane réalisée dans un élastomère est montée sur le 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. Le conduit central du bouton-poussoir est inséré dans la membrane jusqu'à prendre appui contre le fond du manchon.We know from French patent 2,728,809 a pump comprising a push button mounted on the move on a support subject to the container containing the product to distribute, the push button comprising a central cylindrical duct of revolution, provided with radial openings at its lower end, the support defining around this leads an annular pumping chamber, of variable volume. A membrane made in an elastomer is mounted on the support. This membrane has a part symmetrical center of revolution, in the form of a sleeve open at its upper end and closed at its lower end. The central duct of the push button is inserted in the membrane until it bears against the bottom of the sleeve.

La membrane constitue ainsi 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 thus constitutes an elastic return member making it possible to return 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 sticking to the central duct isolates the pumping chamber and avoids a re-entry of air into it.

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 to be relatively inexpensive to manufacture.

Toutefois, cette pompe connue n'offre pas entière satisfaction, la société déposante ayant constaté une tendance du bouton-poussoir à se bloquer et/ou des mauvaises reconstitution et distribution de dose.However, this known pump does not offer complete satisfaction, the company Applicant having observed a tendency for the push button to lock up 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 organe mobile monté à déplacement relativement à un support, l'organe mobile comportant un conduit central dans lequel le produit devant être distribué pénètre à la faveur d'au moins une ouverture, le support définissant avec l'organe mobile, autour dudit conduit central, une chambre de pompage de volume variable, cette pompe comportant en outre une membrane ayant une partie centrale en forme de manchon ouvert à son extrémité supérieure et fermé à son extrémité inférieure, partie centrale dans laquelle est inséré ledit conduit central, la membrane étant agencée de manière à isoler la ou les ouvertures dudit conduit central permettant l'entrée du produit et la chambre de pompage quand le volume de cette dernière augmente et que du produit est aspiré dans la chambre de pompage.The present invention aims to improve the reliability of the operation of a pump of the type defined above, namely comprising a movable member mounted at displacement relative to a support, the movable member comprising a central duct into which the product to be distributed enters through at least one opening, the support defining with the movable member, around said central duct, a variable volume pumping, this pump further comprising a membrane having a sleeve-shaped central part open at its upper end and closed at its lower end, central part into which said central duct is inserted, the membrane being arranged so as to isolate the opening or openings of said central duct allowing the entry of the product and the pumping chamber when the volume of the latter increases and product is drawn into the pumping chamber.

Elle y parvient par le fait que l'un au moins de la membrane et du conduit central est conformé pour prévenir la formation entre la membrane et le conduit central d'une zone annulaire étanche empêchant le produit contenu dans la chambre de pompage de s'écouler par ledit conduit central lorsque le volume de la chambre de pompage diminue.It does this by the fact that at least one of the membrane and the duct central is shaped to prevent formation between the membrane and the central duct a sealed annular zone preventing the product contained in the pumping chamber to flow through said central duct when the volume of the pumping chamber decreases.

De préférence, l'un au moins de la membrane et du conduit central est conformé pour venir en appui contre l'autre de la membrane et du conduit central en des emplacements prédéterminés de sa périphérie, au moins au cours du déplacement relatif de l'organe mobile et du support.Preferably at least one of the membrane and the central duct is shaped to bear against the other of the membrane and the central duct in predetermined locations of its periphery, at least during the relative displacement of the movable member and the support.

De préférence, l'un au moins de la membrane et du conduit central comporte des reliefs contre lesquels vient en appui l'autre de la membrane et du conduit central, au moins au cours du déplacement relatif de l'organe mobile et du support.Preferably, at least one of the membrane and of the central duct comprises reliefs against which comes to bear the other of the membrane and the central duct, at less during the relative movement of the movable member and the support.

Grâce à l'invention, on garantit un fonctionnement fiable de la pompe, sans blocage de l'organe mobile lorsque le volume de la chambre de pompage varie.Thanks to the invention, reliable operation of the pump is guaranteed, without blocking of the movable member when the volume of the pumping chamber varies.

Les reliefs précités tendent à empêcher tout blocage par la membrane de la circulation du produit provenant de la chambre de pompage vers la ou les ouvertures du conduit central par laquelle ou lesquelles pénètre le produit devant être distribué, lorsque le volume de la chambre de pompage diminue.The abovementioned reliefs tend to prevent any blockage by the membrane of the circulation of the product coming from the pumping chamber towards the opening (s) of the central conduit through which penetrates the product to be distributed, when the volume of the pumping chamber decreases.

Ces reliefs tendent également à maintenir le conduit central de l'organe mobile dans l'axe de la partie centrale de la membrane, ce qui est favorable à un fonctionnement satisfaisant de la pompe.These reliefs also tend to maintain the central duct of the movable member in the axis of the central part of the membrane, which is favorable for operation satisfactory from the pump.

Dans une réalisation préférée, lesdits reliefs sont réalisés sur la membrane en étant de préférence constitués par des bossages équi-répartis autour de l'axe de la partie centrale de la membrane au niveau de son ouverture.In a preferred embodiment, said reliefs are produced on the membrane in preferably being constituted by bosses equi-distributed around the axis of the part center of the membrane at its opening.

Dans une réalisation particulière, la membrane comporte une lèvre flexible apte d'une part à isoler la chambre de pompage d'une source de produit quand le volume de ladite chambre de pompage diminue et d'autre part à permettre une rentrée de produit dans ladite chambre de pompage lorsque le volume de cette dernière augmente. In a particular embodiment, the membrane has a flexible lip capable on the one hand to isolate the pumping chamber from a source of product when the volume of said pumping chamber decreases and on the other hand to allow a return of product into said pumping chamber when the volume of the latter increases.

Dans une réalisation particulière, ladite lèvre flexible se raccorde avec ladite partie centrale de la membrane en formant une gorge annulaire étroite, ouverte vers le bas, et le support comporte une jupe intérieure venant en appui à son extrémité supérieure dans le fond de ladite gorge, pour retenir axialement la membrane lorsque l'organe mobile est déplacé vers le bas pour diminuer le volume de la chambre de pompage.In a particular embodiment, said flexible lip is connected with said central part of the membrane by forming a narrow annular groove, open downwards, and the support has an inner skirt bearing at its upper end in the bottom of said groove, for axially retaining the membrane when the movable member is moved down to decrease the volume of the pumping chamber.

Dans une réalisation particulière, le support comporte une double lèvre d'étanchéité, s'appliquant de manière étanche sur une jupe tubulaire de l'organe mobile, cette jupe tubulaire étant ouverte vers le bas et s'étendant autour du conduit central concentriquement à ce dernier, cette jupe tubulaire délimitant en outre radialement vers l'extérieur la chambre de pompage.In a particular embodiment, the support has a double lip sealing, applying sealingly on a tubular skirt of the movable member, this tubular skirt being open downwards and extending around the central duct concentrically to the latter, this tubular skirt further delimiting radially towards outside the pumping chamber.

Dans une réalisation particulière, la jupe intérieure précitée fait partie d'une pièce rapportée sur le reste du support.In a particular embodiment, the aforementioned inner skirt is part of a patch on the rest of the support.

Dans une réalisation préférée, la lèvre flexible précitée comporte une nervure annulaire par laquelle elle peut s'appliquer de manière étanche sur la jupe intérieure du support lorsque le volume de la chambre de pompage diminue ou lorsque la pompe est au repos, ladite jupe intérieure communiquant intérieurement avec la source de produit et comportant au-dessus de ladite nervure annulaire des ouvertures permettant au produit de gagner la chambre de pompage lorsque le volume de cette dernière augmente et que ladite lèvre flexible s'écarte de ladite jupe intérieure sous l'effet de la poussée du produit s'écoulant vers la chambre de pompage.In a preferred embodiment, the aforementioned flexible lip has a rib annular by which it can be applied sealingly on the inner skirt of the support when the volume of the pumping chamber decreases or when the pump is at rest, said inner skirt communicating internally with the source of product and comprising above said annular rib openings allowing the product to gain the pumping chamber when the volume of the latter increases and that said flexible lip deviates from said inner skirt under the effect of the thrust of the product flowing to the pumping chamber.

Dans une réalisation préférée, la lèvre flexible comporte, au-dessus de ladite nervure annulaire, une zone amincie.In a preferred embodiment, the flexible lip comprises, above said annular rib, a thinned area.

Dans une réalisation préférée, le conduit central de l'organe mobile est pourvu, à son extrémité inférieure, d'au moins une ouverture radiale.In a preferred embodiment, the central duct of the movable member is provided, at its lower end, at least one radial opening.

Dans une réalisation préférée, l'organe mobile constitue un bouton-poussoir, ledit conduit central étant réalisé d'un seul tenant avec un embout de distribution.In a preferred embodiment, the movable member constitutes a push button, said central duct being produced in one piece with a dispensing nozzle.

Dans une réalisation particulière, la jupe tubulaire de l'organe mobile coulisse à l'intérieur d'une jupe de guidage du support, ménageant avec ladite jupe intérieure du support une gorge annulaire ouverte vers le haut, communiquant par au moins un orifice de reprise d'air avec la source de produit, la jupe tubulaire de l'organe mobile s'appliquant de manière étanche sur ladite jupe de guidage lorsque l'organe mobile est au repos et que le volume de la chambre de pompage est maximum. In a particular embodiment, the tubular skirt of the movable member slides inside a support guide skirt, providing with said interior skirt of the support an annular groove open upwards, communicating by at least one orifice of air intake with the product source, the tubular skirt of the movable member applying sealingly on said guide skirt when the movable member is at rest and the volume of the pumping chamber is maximum.

Dans une réalisation particulière, la pompe comporte un ressort de rappel pour rappeler l'organe mobile dans une position initiale après la distribution d'une dose de produit.In a particular embodiment, the pump includes a return spring for recall the movable organ to an initial position after the distribution of a dose of product.

Ce ressort de rappel est avantageusement constitué par un ressort hélicoïdal travaillant en compression.This return spring is advantageously constituted by a helical spring working in compression.

Ce ressort est disposé de préférence dans l'axe de la membrane, de manière à s'appliquer par son extrémité supérieure sur l'extrémité inférieure de la partie centrale de la membrane.This spring is preferably arranged in the axis of the membrane, so as to apply by its upper end to the lower end of the central part of the membrane.

La présence d'un ressort de rappel est avantageuse, car elle facilite le choix du matériau pouvant constituer la membrane, puisque cette dernière peut alors ne pas être précontrainte ou subir une précontrainte relativement faible.The presence of a return spring is advantageous because it facilitates the choice of the material which may constitute the membrane, since the latter may then not be or relatively weak prestress.

Elle élargit également la gamme des produits pouvant être distribués, puisqu'il devient plus facile de trouver, pour réaliser la membrane, un matériau compatible avec le produit à distribuer.It also widens the range of products that can be distributed, since becomes easier to find, to make the membrane, a material compatible with the product to distribute.

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 such as defined above.

D'autres caractéristiques et avantages de la présente invention apparaítront à la lecture de la description détaillée qui va suivre, d'un exemple de réalisation non limitatif de l'invention et d'une variante de mise en oeuvre, et à l'examen du dessin annexé, sur lequel :

  • la figure 1 est une vue schématique de la partie supérieure d'un récipient équipé d'une pompe conforme à l'invention,
  • les figures 2 et 3 représentent isolément la jupe intérieure du support,
  • la figure 4 représente isolément et partiellement, l'extrémité inférieure de la jupe tubulaire de l'organe mobile,
  • la figure 5 représente isolément, en coupe axiale schématique, la membrane équipant la pompe de la figure 1,
  • la figure 6 est une vue de dessus selon la flèche en VI de la figure 5,
  • la figure 7 illustre le fonctionnement de la pompe lorsque l'on appuie sur le bouton-poussoir,
  • la figure 8 illustre le fonctionnement de la pompe lorsque l'on relâche le bouton-poussoir,
  • la figure 9 représente de façon partielle et schématique un bouton-poussoir conforme à une variante de mise en oeuvre de l'invention, et
  • la figure 10 est une section transversale selon le trait de coupe X-X de la figure 9.
Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, of a non-limiting exemplary embodiment of the invention and of an alternative embodiment, and on examining the attached drawing, in which:
  • FIG. 1 is a schematic view of the upper part of a container fitted with a pump according to the invention,
  • FIGS. 2 and 3 represent the inner skirt of the support in isolation,
  • FIG. 4 represents, in isolation and partially, the lower end of the tubular skirt of the movable member,
  • FIG. 5 represents in isolation, in schematic axial section, the membrane equipping the pump of FIG. 1,
  • FIG. 6 is a top view according to the arrow in VI of FIG. 5,
  • FIG. 7 illustrates the operation of the pump when the push button is pressed,
  • FIG. 8 illustrates the operation of the pump when the push button is released,
  • FIG. 9 partially and schematically represents a push button in accordance with an alternative embodiment of the invention, and
  • FIG. 10 is a cross section along the section line XX of FIG. 9.

On a représenté sur la figure 1 un récipient 1 comportant un corps 2 formant réservoir, dont on ne voit sur le dessin que l'extrémité supérieure, définissant un col 3 sur lequel est encliqueté un support 4.There is shown in Figure 1 a container 1 having a body 2 forming reservoir, of which only the upper end is seen in the drawing, defining a neck 3 on which is snapped on a support 4.

Le support 4 guide en coulissement, selon un axe X, un bouton-poussoir 5 et sert au montage d'un capot de protection amovible 6, couvrant le bouton-poussoir 5 avant la première utilisation.The support 4 guides in sliding, along an axis X, a push button 5 and used to mount a removable protective cover 6, covering the front push button 5 the first use.

Le support 4 comporte une jupe d'étanchéité 7 s'appliquant de manière étanche sur la surface intérieure du col 3.The support 4 includes a sealing skirt 7 which is applied in a sealed manner on the inside surface of the neck 3.

La jupe d'étanchéité 7 est prolongée radialement, d'une part vers l'extérieur par des pattes de fixation 8 encliquetées sur un bourrelet annulaire 9 du col 3, et d'autre part vers l'intérieur par une paroi étagée 10 définissant un embout 12 servant au raccordement d'un tube plongeur 13, partiellement représenté sur le dessin.The sealing skirt 7 is extended radially, on the one hand towards the outside by fixing lugs 8 snapped onto an annular bead 9 of the neck 3, and other goes inward by a stepped wall 10 defining a nozzle 12 used for connection of a dip tube 13, partially shown in the drawing.

Une jupe extérieure 15 et une jupe de guidage 16 sont réalisées d'un seul tenant par moulage de matière plastique avec la jupe d'étanchéité 7, les pattes de fixation 8 et la paroi étagée 10.An outer skirt 15 and a guide skirt 16 are made in one piece by plastic molding with the sealing skirt 7, the fixing lugs 8 and the stepped wall 10.

La jupe extérieure 15 s'étend autour du col 3 du récipient et présente un épaulement 17 sur lequel prend appui le capot de protection 6.The outer skirt 15 extends around the neck 3 of the container and has a shoulder 17 on which the protective cover 6 is supported.

Le bord supérieur 18 de la jupe extérieure 15 retient le bouton-poussoir 5 au repos, comme cela sera précisé dans la suite.The upper edge 18 of the outer skirt 15 retains the push button 5 at rest, as will be explained below.

Le support 4 comporte une jupe intérieure 20 constituée par une pièce rapportée, ayant une extrémité inférieure 21 épaulée, engagée à force dans la paroi étagée 10.The support 4 comprises an inner skirt 20 constituted by a part added, having a lower end 21 shouldered, forcibly engaged in the stepped wall 10.

La jupe intérieure 20 comporte une extrémité supérieure sensiblement effilée, pourvue d'ouvertures 22, comme on peut le voir plus particulièrement sur les figures 2 et 3. The internal skirt 20 has a substantially tapered upper end, provided with openings 22, as can be seen more particularly in FIGS. 2 and 3.

Ces ouvertures 22 se présentent dans l'exemple décrit sous la forme de fentes orientées suivant l'axe X, prolongées vers le bas par des rainures 25 s'étendant sur la surface radialement intérieure de la jupe intérieure 20 jusqu'à un décrochement 26.These openings 22 are in the example described in the form of slots oriented along the X axis, extended downward by grooves 25 extending over the radially inner surface of the inner skirt 20 until a step 26.

Une double lèvre d'étanchéité annulaire 24 est réalisée d'un seul tenant avec la jupe intérieure 20 par moulage de matière plastique.A double annular sealing lip 24 is produced in one piece with the inner skirt 20 by plastic molding.

Le bouton-poussoir 5 comporte une jupe extérieure 30, pourvue à son extrémité inférieure de dents 31, ces dernières venant en butée contre le bord supérieur 18 de la jupe extérieure 15 du support 4 lorsque le bouton-poussoir 5 est au repos en position haute, comme représenté sur la figure 1.The push button 5 has an outer skirt 30, provided at its end lower of teeth 31, the latter abutting against the upper edge 18 of the skirt outside 15 of the support 4 when the push button 5 is at rest in the high position, as shown in figure 1.

Le bouton-poussoir 5 comporte un conduit central 32, d'axe X, et une jupe tubulaire 33 concentrique, délimitant autour du conduit central 32 une chambre de pompage 34 annulaire.The push button 5 has a central duct 32, of axis X, and a skirt tubular 33 concentric, defining around the central duct 32 a pumping 34 annular.

La jupe extérieure 30, la jupe tubulaire 33 et le conduit central 32 sont réalisés d'un seul tenant par moulage de matière plastique avec un embout de distribution 35, communiquant intérieurement avec le conduit central 32.The outer skirt 30, the tubular skirt 33 and the central duct 32 are produced in one piece by molding plastic material with a dispensing nozzle 35, communicating internally with the central duct 32.

Ce dernier comporte, à son extrémité inférieure, des ouvertures radiales 36.The latter has, at its lower end, radial openings 36.

L'extrémité inférieure de la jupe tubulaire 33 forme une lèvre d'étanchéité 37, s'étendant légèrement radialement vers l'extérieur, comme représenté plus particulièrement sur la figure 4.The lower end of the tubular skirt 33 forms a sealing lip 37, extending slightly radially outward, as shown more particularly in Figure 4.

La jupe de guidage 16 du support 4 présente en partie inférieure un léger retrait annulaire 41 sur sa surface radialement intérieure.The guide skirt 16 of the support 4 has a slight shrinkage in the lower part annular 41 on its radially inner surface.

Lorsque le bouton-poussoir 5 est en position haute, la lèvre d'étanchéité 37 s'applique de manière étanche sur la surface cylindrique de révolution 40 de la partie supérieure de la jupe de guidage 16, comme représenté sur la figure 1.When the push button 5 is in the high position, the sealing lip 37 applies tightly to the cylindrical surface of revolution 40 of the part upper part of the guide skirt 16, as shown in FIG. 1.

L'intérieur du récipient est ainsi isolé de l'air ambiant, ce qui est favorable à une bonne conservation du produit.The interior of the container is thus isolated from the ambient air, which is favorable to good conservation of the product.

Lorsque le bouton-poussoir 5 est enfoncé, la lèvre d'étanchéité 37 cesse de s'appliquer de façon étanche sur la jupe de guidage 16, du fait de l'existence du retrait annulaire 41, ce qui permet à la gorge formée entre les jupes intérieure 20 et de guidage 16 de communiquer avec l'extérieur.When the push button 5 is pressed, the sealing lip 37 ceases to apply tightly to the guide skirt 16, due to the existence of the shrinkage annular 41, which allows the groove formed between the inner skirts 20 and guide 16 to communicate with the outside.

Un orifice 42 de reprise d'air est réalisé dans le fond de cette gorge pour permettre à l'air de rentrer dans le récipient au fur et à mesure du vidage de ce dernier. An air intake orifice 42 is made in the bottom of this groove to allow air to re-enter the container as it is emptied.

La jupe intérieure 20 sert au montage d'une membrane 50 ayant une partie centrale 51 en forme de manchon, d'axe X, ouvert à son extrémité supérieure et fermé à son extrémité inférieure par un fond 52.The inner skirt 20 is used for mounting a membrane 50 having a part central unit 51 in the form of a sleeve, axis X, open at its upper end and closed at its lower end by a bottom 52.

Cette partie centrale 51 est prolongée radialement vers l'extérieur par une lèvre annulaire flexible 53, comme on peut le voir plus particulièrement sur les figures 5 et 6.This central part 51 is extended radially outwards by a lip flexible annular 53, as can be seen more particularly in FIGS. 5 and 6.

Cette lèvre flexible 53 forme, en se raccordant avec la partie centrale 51, une gorge annulaire 54 étroite dans laquelle est insérée la jupe intérieure 20 à son extrémité supérieure, jusqu'à prendre appui par son bord libre dans le fond de ladite gorge. La gorge 54 présente sensiblement le même profil que l'extrémité supérieure de la jupe intérieure 20.This flexible lip 53 forms, by connecting with the central part 51, a narrow annular groove 54 into which the inner skirt 20 is inserted at its end upper, until taking support by its free edge in the bottom of said groove. The throat 54 has substantially the same profile as the upper end of the inner skirt 20.

La hauteur de la lèvre flexible 53 est supérieure à celle des ouvertures 22 et la lèvre flexible 53 comporte sur sa face radialement intérieure, à proximité de son extrémité libre, une nervure annulaire 56 apte à s'appliquer de manière étanche contre la surface radialement extérieure de la jupe intérieure 20, comme illustré sur la figure 1.The height of the flexible lip 53 is greater than that of the openings 22 and the flexible lip 53 has on its radially inner face, close to its end free, an annular rib 56 capable of being applied sealingly against the surface radially exterior of the interior skirt 20, as illustrated in FIG. 1.

La lèvre flexible 53 présente en outre, au-dessus de la nervure 56, une paroi amincie 58 destinée à faciliter sa déformation radialement vers l'extérieur, pour permettre au produit de gagner la chambre de pompage 34, comme cela sera précisé dans la suite.The flexible lip 53 also has, above the rib 56, a wall thinned 58 intended to facilitate its deformation radially outwards, to allow to the product to gain the pumping chamber 34, as will be explained below.

La membrane 50 comporte, au niveau de l'ouverture de sa partie centrale 51, des reliefs non symétriques de révolution autour de l'axe X, à savoir des bossages 55 dont la fonction sera précisée plus loin.The membrane 50 comprises, at the opening of its central part 51, non-symmetrical reliefs of revolution around the axis X, namely bosses 55 of which the function will be specified later.

Dans l'exemple de réalisation décrit, ces bossages 55 sont au nombre de trois, étant équi-répartis angulairement autour de l'axe X, comme on peut le voir sur la figure 6.In the embodiment described, these bosses 55 are three in number, being evenly distributed angularly around the X axis, as can be seen in Figure 6.

Chacun de ces bossages 55 forme saillie sur la surface radialement intérieure de la partie centrale 51 le long d'un quart environ de la hauteur de celle-ci à partir de son extrémité supérieure, et se prolonge radialement vers l'extérieur sur la face supérieure de la membrane 50 jusque sensiblement au-dessus de la gorge 54, comme on peut le voir sur la figure 5.Each of these bosses 55 protrudes from the radially inner surface of the central part 51 along approximately a quarter of the height thereof from its upper end, and extends radially outward on the upper face of the membrane 50 to substantially above the groove 54, as can be seen in the figure 5.

Chacun des bossages 55 présente en outre, lorsque observé en section dans un plan de coupe transversal, une section convexe vers l'axe X, comme représenté sur la figure 6. Each of the bosses 55 further presents, when observed in section in a transverse section plane, a convex section towards the X axis, as shown in the figure 6.

Le conduit central 32 du bouton-poussoir 5 est inséré dans la partie centrale 51 de la membrane 50 jusqu'à prendre appui, par son extrémité inférieure, contre le fond 52 de la membrane 50, comme illustré sur la figure 1.The central conduit 32 of the push button 5 is inserted in the central part 51 of the membrane 50 until it bears, by its lower end, against the bottom 52 of the membrane 50, as illustrated in FIG. 1.

Les bossages 55 s'appliquent alors, dans l'exemple décrit, contre la surface cylindrique de révolution du conduit central 32. Il n'est toutefois pas nécessaire, d'une manière générale, que les bossages 55 s'appliquent sur le conduit central 32 lorsque le bouton-poussoir est au repos.The bosses 55 then apply, in the example described, against the surface cylindrical of revolution of the central duct 32. However, it is not necessary to in general, that the bosses 55 apply to the central duct 32 when the push button is at rest.

Lorsque le bouton-poussoir 5 est au repos, la partie centrale 51 de la membrane 50 est légèrement tendue, de manière à maintenir les dents 31 en butée contre le bord supérieur 18 de la jupe extérieure 15.When the push button 5 is at rest, the central part 51 of the membrane 50 is slightly stretched, so as to keep the teeth 31 in abutment against the edge upper 18 of the outer skirt 15.

La double lèvre d'étanchéité 24 s'applique de manière étanche sur la surface radialement intérieure de la jupe tubulaire 33, quel que soit le mouvement ascendant ou descendant du bouton-poussoir 5.The double sealing lip 24 is applied sealingly to the surface radially inner of the tubular skirt 33, whatever the upward movement or down from push button 5.

La surface radialement intérieure de la partie centrale 51 de la membrane est légèrement conique convergeant vers le bas, pour sa partie s'étendant sous les bossages 55 jusque légèrement au-dessus de l'extrémité supérieure des ouvertures 36, puis cylindrique de révolution d'axe X.The radially inner surface of the central part 51 of the membrane is slightly conical, converging downwards, for its part extending under the bosses 55 slightly above the upper end of the openings 36, then cylindrical of X axis revolution.

Lorsque la membrane 50 est en place, la lèvre flexible vient au repos en appui par la nervure 56 sur la jupe intérieure 20.When the membrane 50 is in place, the flexible lip comes to rest in support by the rib 56 on the inner skirt 20.

Le support 4, le bouton-poussoir 5 et la membrane 50 constituent une pompe dont le fonctionnement est le suivant.The support 4, the push button 5 and the membrane 50 constitute a pump the operation of which is as follows.

Lorsque l'utilisateur appuie sur le bouton-poussoir 5, comme illustré sur la figure 7, le conduit central 32 entraíne vers le bas le fond 52 de la membrane 50, laquelle se déforme de façon élastique en s'étirant pour accompagner le mouvement du conduit central 32.When the user presses the push button 5, as illustrated in the Figure 7, the central duct 32 drives down the bottom 52 of the membrane 50, which deforms elastically by stretching to accompany the movement of the duct central 32.

La pompe est ici supposée amorcée, c'est-à-dire que la chambre de pompage 34 est remplie de produit.The pump is here assumed to be primed, i.e. the pumping chamber 34 is filled with product.

Lors du mouvement de descente du bouton-poussoir 5, le produit contenu dans la chambre de pompage 34 qui se trouve chassé entre le conduit central 32 et la partie centrale 51 de la membrane gagne les ouvertures radiales 36 du conduit central 32, puis l'embout de distribution 35. During the downward movement of the push button 5, the product contained in the pumping chamber 34 which is driven between the central duct 32 and the part central 51 of the membrane gains the radial openings 36 of the central duct 32, then the dispensing nozzle 35.

La lèvre flexible 53 s'applique de manière étanche sur la jupe intérieure 20 durant le mouvement de descente du bouton-poussoir 5.The flexible lip 53 is applied in a sealed manner on the inner skirt 20 during the downward movement of the push button 5.

La lèvre d'étanchéité 37 de la jupe tubulaire 33 du bouton-poussoir 5 cesse, lorsqu'elle atteint le retrait annulaire 41 après une certaine course d'enfoncement du bouton-poussoir 5, de s'appliquer de manière étanche sur la jupe de guidage 16, permettant une communication entre l'intérieur du récipient et l'extérieur, par l'intermédiaire de l'orifice de reprise d'air 42 et le jeu existant entre la jupe de guidage 16 et la jupe tubulaire 33.The sealing lip 37 of the tubular skirt 33 of the push button 5 ceases, when it reaches the annular withdrawal 41 after a certain driving stroke of the push button 5, to apply in a sealed manner on the guide skirt 16, allowing communication between the inside of the container and the outside, via the air intake orifice 42 and the clearance existing between the guide skirt 16 and the tubular skirt 33.

Les bossages 55 ménagent entre eux des passages pour le produit et empêchent la formation d'une zone annulaire étanche entre le conduit central 32 et la partie centrale 51 de la membrane 50 qui ne pourrait être vaincue par la pression du produit, de sorte que le produit peut circuler jusqu'aux ouvertures radiales 36, la membrane 50 pouvant s'écarter légèrement du conduit central au voisinage de l'extrémité supérieure des ouvertures 36 sous l'effet de la pression du produit.The bosses 55 form passages between them for the product and prevent the formation of a sealed annular zone between the central duct 32 and the central part 51 of the membrane 50 which could not be overcome by the pressure of the product, so that the product can flow to the radial openings 36, the membrane 50 being able to move away slightly from the central duct in the vicinity of the upper end of the openings 36 under the effect of product pressure.

Les bossages 55 tendent également à maintenir le conduit central 32 coaxial à la jupe intérieure 20 et à garantir le maintien en place de la partie supérieure de la membrane accrochée sur la jupe intérieure 20.The bosses 55 also tend to keep the central duct 32 coaxial with the inner skirt 20 and to guarantee that the upper part of the membrane hung on the inner skirt 20.

De plus, l'étroitesse de la gorge 54 assure un bon accrochage de la membrane 50 sur la jupe intérieure 20 et empêche que la membrane 50 ne soit entraínée, à sa partie supérieure, en déplacement avec le conduit central 32.In addition, the narrowness of the groove 54 ensures good adhesion of the membrane 50 on the inner skirt 20 and prevents the membrane 50 from being entrained, at its part upper, moving with the central duct 32.

Lorsque l'utilisateur relâche le bouton-poussoir 5, celui-ci est rappelé vers le haut par la partie centrale 51 de la membrane qui tend à reprendre sa forme initiale.When the user releases the push button 5, it is recalled towards the high by the central part 51 of the membrane which tends to return to its initial shape.

Lors du mouvement de retour du bouton-poussoir 5, la partie centrale 51 de la membrane 50 isole les ouvertures radiales 36 de la chambre de pompage 34, et la dépression qui se crée dans cette dernière provoque l'écartement de la lèvre flexible 53 et une arrivée de produit provenant du récipient.During the return movement of the push button 5, the central part 51 of the membrane 50 isolates the radial openings 36 of the pumping chamber 34, and the depression which is created in the latter causes the separation of the flexible lip 53 and an arrival of product from the container.

Plus précisément, le produit gagnant alors la chambre de pompage 34 circule par les rainures 25 de la jupe intérieure 20, le long de la partie centrale 51 de la membrane 50, traverse la jupe intérieure 20 à la faveur des ouvertures 22, puis contourne la lèvre flexible 53 et remonte à l'extérieur de cette dernière comme illustré sur la figure 8.More specifically, the product then wins the pumping chamber 34 circulates by the grooves 25 of the inner skirt 20, along the central part 51 of the membrane 50, crosses the inner skirt 20 through the openings 22, then goes around the lip flexible 53 and rises outside of the latter as illustrated in FIG. 8.

Alors que le bouton-poussoir 5 remonte, de l'air peut gagner le récipient par le jeu existant entre la jupe de guidage 16 et la jupe tubulaire 33 et l'orifice de reprise d'air 42, jusqu'à ce que la lèvre d'étanchéité 37 s'applique à nouveau de manière étanche sur la jupe de guidage 16 lorsque le bouton-poussoir 5 arrive en position haute, comme expliqué plus haut.As the push button 5 goes up, air can reach the container through the clearance between the guide skirt 16 and the tubular skirt 33 and the air intake orifice 42, until the sealing lip 37 again applies sealingly to the guide skirt 16 when the push button 5 reaches the high position, as explained upper.

Bien entendu, l'invention n'est pas limitée à l'exemple de réalisation qui vient d'être décrit.Of course, the invention is not limited to the embodiment which comes to be described.

On peut notamment utiliser une membrane dont la surface radialement intérieure de la partie centrale serait symétrique de révolution, les bossages 55 étant remplacés par des bossages 60 réalisés sur le conduit central 32 comme illustré sur les figures 9 et 10.One can in particular use a membrane whose surface radially interior of the central part would be symmetrical in revolution, the bosses 55 being replaced by bosses 60 made on the central duct 32 as illustrated in the Figures 9 and 10.

On peut encore assister ou provoquer le mouvement de retour du bouton-poussoir au moyen d'un ressort hélicoïdal 90 représenté en trait discontinu sur la figure 8.You can still assist or cause the return movement of the push button by means of a helical spring 90 shown in broken lines in FIG. 8.

Ce ressort est logé à l'intérieur de la jupe intérieure 20, travaille en compression, et prend appui à son extrémité inférieure sur le décrochement 26 et à son extrémité supérieure sur la face inférieure du fond 52 de la membrane.This spring is housed inside the inner skirt 20, works in compression, and is supported at its lower end on the recess 26 and at its upper end on the underside of the bottom 52 of the membrane.

On peut encore placer un clapet en amont de la membrane, ce clapet s'ouvrant lorsque du produit est aspiré dans la chambre de pompage et présentant une fuite de manière à ne pas empêcher le déplacement de l'organe mobile lors de la distribution d'une dose de produit.We can still place a valve upstream of the membrane, this valve opening when product is sucked into the pumping chamber and leaking so as not to prevent the displacement of the movable member during the distribution of a dose of product.

Ce clapet peut être réalisé par exemple au moyen d'une bille 91 représentée en trait discontinu sur la figure 8, l'embout 12 servant de siège.This valve can be produced for example by means of a ball 91 shown in broken line in Figure 8, the tip 12 serving as a seat.

Des reliefs 92 sont réalisés sur la surface intérieure de la jupe intérieure pour retenir la bille 91 à proximité de son siège.Reliefs 92 are produced on the inner surface of the inner skirt to retain the ball 91 near its seat.

La bille 91 est choisie très rugueuse de manière à créer une fuite permettant de ne pas bloquer le mouvement de descente de la partie centrale de la membrane lors de la distribution d'une dose de produit.The ball 91 is chosen to be very rough so as to create a leak making it possible to do not block the downward movement of the central part of the membrane when distribution of a dose of product.

La bille 91 permet d'amorcer la pompe en actionnant un faible nombre de fois le bouton-poussoir.The ball 91 makes it possible to prime the pump by actuating a small number of times the push button.

La membrane peut encore être réalisée en au moins deux matériaux différents. Ainsi, on peut utiliser, pour réaliser la lèvre flexible 53, un matériau plus mou que celui servant à réaliser la partie formant ressort 51.The membrane can also be made of at least two different materials. Thus, a softer material can be used to make the flexible lip 53 than that used to produce the spring portion 51.

On peut utiliser par exemple le même élastomère, mais plus ou moins chargé. One can use for example the same elastomer, but more or less loaded.

Le fait d'employer des matériaux différents permet d'utiliser un matériau relativement dur pour la partie centrale 51, ce qui est favorable à un bon effet ressort sans pour autant gêner le fonctionnement de la lèvre flexible 53.The fact of using different materials makes it possible to use a material relatively hard for the central part 51, which is favorable for a good spring effect without however interfere with the operation of the flexible lip 53.

Dans une réalisation non illustrée, un ressort hélicoïdal est disposé autour du conduit central et prend appui à son extrémité inférieure sur l'extrémité supérieure de la membrane et à son extrémité supérieure sur le bouton-poussoir 5.In an embodiment not illustrated, a helical spring is arranged around the central duct and bears at its lower end on the upper end of the membrane and at its upper end on the push button 5.

Claims (19)

Pompe du type comportant un organe mobile monté à déplacement relativement à un support, l'organe mobile comportant un conduit central (32) dans lequel le produit devant être distribué pénètre à la faveur d'au moins une ouverture (36), le support définissant avec l'organe mobile, autour dudit conduit central, une chambre de pompage (34) de volume variable, cette pompe comportant en outre une membrane ayant une partie centrale en forme de manchon ouvert à son extrémité supérieure et fermé à son extrémité inférieure, partie centrale dans laquelle est inséré ledit conduit central, la membrane étant agencée de manière à isoler la ou les ouvertures (36) dudit conduit central et la chambre de pompage (34) quand le volume de cette dernière augmente et que du produit est aspiré dans la chambre de pompage, pompe caractérisée par le fait que l'un au moins de la membrane (50) et du conduit central (32) est conformé pour prévenir la formation entre la membrane (50) et le conduit central (32) d'une zone annulaire étanche empêchant le produit contenu dans la chambre de pompage de s'écouler par ledit conduit central lorsque le volume de la chambre de pompage diminue.Pump of the type comprising a movable member mounted for displacement relative to a support, the movable member comprising a central duct (32) in which the product to be dispensed penetrates through at least one opening (36), the support defining with the movable member, around said central duct, a pumping (34) of variable volume, this pump further comprising a membrane having a central part in the form of a sleeve open at its upper end and closed at its lower end, central part into which said central duct is inserted, the membrane being arranged so as to isolate the opening or openings (36) of said central duct and the pumping chamber (34) when the volume of the latter increases and that of the product is sucked into the pumping chamber, a pump characterized in that one at less of the membrane (50) and the central duct (32) is shaped to prevent formation between the membrane (50) and the central duct (32) of a sealed annular zone preventing the product contained in the pumping chamber from flowing through said conduit central when the volume of the pumping chamber decreases. Pompe selon la revendication 1, caractérisée par le fait que l'un au moins de la membrane (50) et du conduit central (32) est conformé pour venir en appui contre l'autre de la membrane et du conduit central en des emplacements prédéterminés de sa périphérie, au moins au cours du déplacement relatif de l'organe mobile et du support.Pump according to claim 1, characterized in that at least one of the membrane (50) and of the central duct (32) is shaped to bear against the other of the membrane and of the central duct at predetermined locations of its periphery, at least during the relative movement of the movable member and the support. Pompe selon la revendication 2, caractérisée par le fait que l'un au moins de la membrane (50) et du conduit central comporte des reliefs (55 ; 60) contre lesquels vient en appui l'autre de la membrane (50) et du conduit central (32), au moins au cours du déplacement relatif de l'organe mobile (5) et du support (4).Pump according to claim 2, characterized in that at least one of the membrane (50) and of the central duct has reliefs (55; 60) against which supports the other of the membrane (50) and the central duct (32), at least during the relative movement of the movable member (5) and the support (4). Pompe selon la revendication 3, caractérisée par le fait que lesdits reliefs (55) sont réalisés sur la membrane (50).Pump according to claim 3, characterized in that said reliefs (55) are produced on the membrane (50). Pompe selon la revendication 4, caractérisée par le fait que lesdits reliefs sont constitués par des bossages (55) équi-répartis autour de l'axe (X) de la partie centrale (51) de la membrane (50) au niveau de son ouverture.Pump according to claim 4, characterized in that the said reliefs consist of bosses (55) equi-distributed around the axis (X) of the central part (51) of the membrane (50) at its opening. Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que la membrane (50) comporte une lèvre flexible (53) apte d'une part à isoler la chambre de pompage (34) d'une source de produit quand le volume de ladite chambre de pompage diminue et d'autre part à permettre une rentrée de produit dans ladite chambre de pompage (34) lorsque le volume de cette dernière augmente.Pump according to any one of the preceding claims, characterized in that the membrane (50) has a flexible lip (53) capable of part to isolate the pumping chamber (34) from a source of product when the volume of said pumping chamber decreases and on the other hand to allow a return of product into said pumping chamber (34) when the volume of the latter increases. Pompe selon la revendication 6, caractérisée par le fait que ladite lèvre flexible (53) se raccorde avec ladite partie centrale (51) de la membrane (50) en formant une gorge annulaire (54), étroite, ouverte vers le bas, et par le fait que le support (4) comporte une jupe intérieure (20) venant en appui à son extrémité supérieure dans le fond de ladite gorge (54) pour retenir la membrane lorsque l'organe mobile (5) est déplacé vers le bas pour diminuer le volume de la chambre de pompage (34).Pump according to claim 6, characterized in that the said lip flexible (53) connects with said central part (51) of the membrane (50) forming an annular groove (54), narrow, open downwards, and by the fact that the support (4) has an inner skirt (20) bearing at its upper end in the bottom from said groove (54) for retaining the membrane when the movable member (5) is moved towards the bottom to decrease the volume of the pumping chamber (34). Pompe selon la revendication 7, caractérisée par le fait que ladite jupe intérieure (20) fait partie d'une pièce rapportée sur le reste du support (4).Pump according to claim 7, characterized in that the said skirt interior (20) is part of an insert on the rest of the support (4). Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que le support (4) comporte une double lèvre d'étanchéité (24) s'appliquant de manière étanche sur une jupe tubulaire (33) de l'organe mobile (5), ouverte vers le bas et s'étendant autour dudit conduit central (32) concentriquement à ce dernier, cette jupe tubulaire (33) délimitant radialement vers l'extérieur la chambre de pompage (34).Pump according to any one of the preceding claims, characterized in that the support (4) has a double sealing lip (24) applying tightly to a tubular skirt (33) of the movable member (5), open downwards and extending around said central duct (32) concentrically with the latter, this tubular skirt (33) delimiting radially outward the pumping chamber (34). Pompe selon la revendication 9, caractérisée par le fait que la jupe tubulaire (33) de l'organe mobile (5) coulisse à l'intérieur d'une jupe de guidage (16) du support (4), cette jupe de guidage (16) ménageant avec la jupe intérieure (20) une gorge annulaire ouverte vers le haut, communiquant par au moins un orifice de reprise d'air (42) avec la source de produit, la jupe tubulaire (33) de l'organe mobile (5) s'appliquant de manière étanche sur la jupe de guidage (16) lorsque l'organe mobile est au repos et que le volume de la chambre de pompage est maximum.Pump according to claim 9, characterized in that the skirt tubular (33) of the movable member (5) slides inside a guide skirt (16) of the support (4), this guide skirt (16) forming a groove with the internal skirt (20) annular open upwards, communicating by at least one air intake orifice (42) with the source of product, the tubular skirt (33) of the movable member (5) applying sealingly on the guide skirt (16) when the movable member is at rest and the volume of the pumping chamber is maximum. Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que le conduit central (32) de l'organe mobile (5) est pourvu, à son extrémité inférieure, d'au moins une ouverture radiale (36).Pump according to any one of the preceding claims, characterized in that the central duct (32) of the movable member (5) is provided, at its lower end, at least one radial opening (36). Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que ledit organe mobile constitue un bouton-poussoir (5), ledit conduit central (32) étant réalisé d'un seul tenant avec un embout de distribution (35).Pump according to any one of the preceding claims, characterized by the fact that said movable member constitutes a push button (5), said central duct (32) being made in one piece with a dispensing nozzle (35). Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comporte un ressort de rappel pour rappeler l'organe mobile dans une position initiale après la distribution d'une dose de produit. Pump according to any one of the preceding claims, characterized by the fact that it includes a return spring for recalling the movable member in an initial position after dispensing a dose of product. Pompe selon la revendication précédente, caractérisée par le fait que le ressort de rappel est constitué par un ressort hélicoïdal travaillant en compression.Pump according to the preceding claim, characterized in that the return spring is constituted by a helical spring working in compression. Pompe selon la revendication précédente, caractérisée par le fait que le ressort est disposé dans l'axe de la membrane de manière à s'appliquer par son extrémité supérieure sur l'extrémité inférieure de la partie centrale de la membrane.Pump according to the preceding claim, characterized in that the spring is arranged in the axis of the membrane so as to be applied at its end upper on the lower end of the central part of the membrane. Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comporte un clapet en amont de la membrane, ce clapet s'ouvrant lorsque du produit est aspiré dans la chambre de pompage et présentant une fuite de manière à ne pas empêcher le déplacement de l'organe mobile lors de la distribution d'une dose de produit.Pump according to any one of the preceding claims, characterized by the fact that it comprises a valve upstream of the membrane, this valve opening when product is drawn into the pumping chamber and leaking so as not to prevent the moving member from moving during dispensing a dose of product. Pompe selon l'une quelconque des revendications précédentes, caractérisée par le fait que la membrane est réalisée en au moins deux matériaux différents.Pump according to any one of the preceding claims, characterized in that the membrane is made of at least two different materials. Pompe selon les revendications 6 et 17, caractérisée par le fait que la lèvre flexible (53) est réalisée dans un matériau plus mou que la partie formant ressort (51) de la membrane.Pump according to claims 6 and 17, characterized in that the flexible lip (53) is made of a softer material than the spring part (51) of the membrane. Récipient équipé d'une pompe telle que définie dans l'une quelconque des revendications précédentes.Container fitted with a pump as defined in any one of the preceding claims.
EP99402872A 1998-11-20 1999-11-19 Pump and container incorporating the same Expired - Lifetime EP1002735B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9814648A FR2786162B1 (en) 1998-11-20 1998-11-20 PUMP AND CONTAINER THUS EQUIPPED
FR9814648 1998-11-20

Publications (2)

Publication Number Publication Date
EP1002735A1 true EP1002735A1 (en) 2000-05-24
EP1002735B1 EP1002735B1 (en) 2004-03-03

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ID=9533003

Family Applications (1)

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EP99402872A Expired - Lifetime EP1002735B1 (en) 1998-11-20 1999-11-19 Pump and container incorporating the same

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US (1) US6202896B1 (en)
EP (1) EP1002735B1 (en)
JP (1) JP3639894B2 (en)
AT (1) ATE260828T1 (en)
CA (1) CA2290218C (en)
DE (1) DE69915217T2 (en)
ES (1) ES2216466T3 (en)
FR (1) FR2786162B1 (en)

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FR2800132B1 (en) 1999-10-26 2002-03-08 Oreal PUMP FOR EQUIPPING A CONTAINER COMPRISING AN ELASTICALLY DEFORMABLE MEMBRANE OUTSIDE THE PUMPING CHAMBER
FR2805183B1 (en) * 2000-02-23 2002-12-27 Oreal PUMP COMPRISING A SPRING-FORMING MEMBRANE AND CONTAINER THUS EQUIPPED
FR2810301B1 (en) * 2000-06-16 2002-09-13 Rexam Sofab STATIC AIR RETURN DEVICE FOR LIQUID PRODUCT DISPENSER
FR2810645B1 (en) * 2000-06-22 2002-10-25 Valois Sa FLUID PRODUCT DISPENSING DEVICE
US6779689B2 (en) * 2003-01-21 2004-08-24 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Ovaloid dispensing container
US20040222246A1 (en) * 2003-05-05 2004-11-11 The Procter & Gamble Company Sprayer actuator, sprayer, and method of making the same
US20040222243A1 (en) * 2003-05-08 2004-11-11 Saint-Gobain Calmar Inc. Low-cost, in-line trigger operated pump sprayer
KR100918856B1 (en) * 2007-10-22 2009-09-28 김석현 Pump for Liquid Cosmetic Receptacle
US8439233B2 (en) * 2010-10-04 2013-05-14 Derxin (Shanghai) Cosmetics Co., Ltd. Spray head assembly
KR20140056211A (en) * 2011-06-09 2014-05-09 아이.피.에스. 이노베이티브 패키징 솔루션즈 아게 Pumping device for a fluid container
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Also Published As

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JP3639894B2 (en) 2005-04-20
CA2290218C (en) 2006-03-28
DE69915217T2 (en) 2005-03-03
JP2000153190A (en) 2000-06-06
ATE260828T1 (en) 2004-03-15
ES2216466T3 (en) 2004-10-16
FR2786162B1 (en) 2001-02-09
FR2786162A1 (en) 2000-05-26
CA2290218A1 (en) 2000-05-20
DE69915217D1 (en) 2004-04-08
US6202896B1 (en) 2001-03-20
EP1002735B1 (en) 2004-03-03

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