EP1299193B1 - Fluid product dispensing pump - Google Patents

Fluid product dispensing pump Download PDF

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Publication number
EP1299193B1
EP1299193B1 EP01945442A EP01945442A EP1299193B1 EP 1299193 B1 EP1299193 B1 EP 1299193B1 EP 01945442 A EP01945442 A EP 01945442A EP 01945442 A EP01945442 A EP 01945442A EP 1299193 B1 EP1299193 B1 EP 1299193B1
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EP
European Patent Office
Prior art keywords
actuating rod
pump
tubular portion
outer tubular
flexible outer
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
EP01945442A
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German (de)
French (fr)
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EP1299193A1 (en
Inventor
Ludovic Petit
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.)
Aptar France SAS
Original Assignee
Valois SAS
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Publication date
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Publication of EP1299193A1 publication Critical patent/EP1299193A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0008—Sealing or attachment arrangements between sprayer and container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1042—Components or details
    • B05B11/105—Sealing arrangements around pump actuating stem
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1018—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element and the controlling element cooperating with means for opening or closing the inlet valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0037—Containers
    • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
    • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
    • B05B11/00444—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means with provision for filtering or cleaning the air flow drawn into the container

Definitions

  • the present invention relates to a fluid dispensing pump, and more particularly to a new implementation of the actuating rod of the pump.
  • a fluid dispenser pump conventionally comprises a pump body in which a piston connected to an actuating rod is sealingly slid.
  • This actuating rod slides inside an element generally fixed on the upper edge of the pump body, and which may be a shell, a turret or the like.
  • the interface between the actuating rod and the inner surface of the ferrule (or the element which acts as a ferrule) can be sealed or not.
  • the actuating rod preferably slides in a sealed manner inside the shell.
  • the present invention aims to provide a fluid dispensing pump that does not reproduce the aforementioned drawbacks.
  • the present invention aims to provide a fluid dispensing pump which ensures a perfect seal between the actuating rod and the ferrule, or any similar element cooperating with the actuating rod.
  • the present invention aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.
  • the pump provides a ball joint effect.
  • the object of the present invention is to provide such a ball-and-socket pump which also guarantees the seal between the actuating rod and the ferrule.
  • the present invention therefore relates to a fluid dispenser pump as described in claim 1.
  • Advantageous embodiments are described in the dependent claims.
  • the present invention also relates to a fluid dispenser device comprising a pump as defined above.
  • the pump comprises a pump body 1 within which a piston 2 actuated by means of an actuating rod 10 seals tightly.
  • the actuating rod 10 is generally connected to an element such as a pusher (not shown) on which the user presses to actuate the pump.
  • a shell 4 On the upper edge of the pump body 1 is mounted a shell 4 inside which slides the actuating rod 10. Said ring 4 defines in particular the rest position of the piston 2.
  • the actuating rod 10 slides in a member integral with the pump body which is not a ferrule and such an implementation is of course equivalent for the present invention.
  • the actuating rod 10 comprises a flexible outer tubular portion 11 and a rigid inner tubular portion 12 concentric with said flexible outer tubular portion 11.
  • the flexible outer tubular portion 11 has a free axial end 13, namely the upper end in the drawing, and a second axial end 14 which is integral with the actuating rod 10.
  • this flexible outer tubular portion 11 is made integrally with the actuating rod 10.
  • This implementation makes it possible to obtain a perfect seal between the inner surface of the ferrule 4 and the flexible tubular portion 11 of the actuating rod 10, in any position of said actuating rod.
  • This implementation also makes it possible to obtain what is called the ball joint effect, that is to say a seal and a possible actuation of the actuating rod, even when the force exerted on said actuating rod 10 is not exactly axial. Indeed, in this case, the flexible outer tubular portion 11 is slightly deformed while allowing movement of the actuating rod and therefore the piston 2 relative to the pump body 1.
  • FIG. 2 there is shown a second embodiment of the present invention, wherein the two axial ends 13 and 14 of the flexible tubular outer portion 11 are integral with the actuating rod, in particular they are made in a monoblock manner with the this.
  • the outer tubular portion 11 is less flexible than in the first embodiment of the figure 1 , but still provides a good seal and some ball joint effect.
  • An advantage of this second embodiment lies in the space 18 existing between the outer and inner tubular portions 11, 12 of the actuating rod. Indeed, as visible on the figure 2 this space 18 is advantageously part of the metering chamber 20 of the pump, which is defined between the inlet valve 21 and the outlet valve 22 of the pump.
  • FIG. 1 and 2 represent particular embodiments of the pump, in particular inlet and outlet valves 21, 22 and therefore of the metering chamber. It is understood that the present invention applies to any type of pump and is not limited to these embodiments used by way of example.
  • the present invention applies to any type of pump, and is particularly advantageous in a return air pump as shown in the drawings.
  • a vent hole is provided in the fluid dispensing device, that is to say either in the tank, in the pump, or in the fixing ring. pump on the tank.
  • an appropriate filter is provided at the vent hole.
  • the filter is disposed between the ferrule 4 and the fixing ring 30 of the pump on the reservoir (not shown). This filter 40 thus filters the air of the vent passage. It is in this type of essential device that all the air entering the tank passes through the filter.
  • the air passage is designated schematically by the numeral 50 and extends from the outside between the fixing ring 30 and the ferrule 4, then through the filter 40, and between the outside of the ferrule 4 and the inside of the pump body 1, to finally open into the tank through an orifice 50 provided in the pump body by the piston 2.
  • this orifice 50 is closed in the position of This has a particularly advantageous effect for a large number of applications, in which the product contained inside the tank must in no case come into contact with the filter, which could lead to contamination of the product.
  • the orifice 50 of the pump body is closed by the piston 2 in the rest position of the pump, and the filter is insulated from the interior of the tank by a neck seal 60 which is mounted between the fixing ring 30, the pump body 1 and the tank (not shown).
  • the neck seal 60 is sealingly mounted around the pump body 1, thus preventing any contact between the product and the filter 40.

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  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Abstract

The invention concerns a fluid product dispensing pump comprising a pump body (1) wherein tightly slides a piston (2) linked to an actuating rod (10), said actuating rod (10) sliding inside an element (4) integral with said pump body (1), such as a ferrule. The invention is characterised in that said actuating rod (10) comprises a flexible outer tubular part (11) in sealed contact with said element (4) and an inner tubular part (12) concentric with said flexible outer tubular part (11), the contact zone between the inside of the ferrule (4) and the actuating rod (10) being sealed in any position of said actuating rod (10).

Description

La présente invention concerne une pompe de distribution de produit fluide, et plus particulièrement une nouvelle mise en oeuvre de la tige d'actionnement de la pompe.The present invention relates to a fluid dispensing pump, and more particularly to a new implementation of the actuating rod of the pump.

Une pompe de distribution de produit fluide comprend classiquement un corps de pompe dans lequel coulisse de manière étanche un piston relié à une tige d'actionnement. Cette tige d'actionnement coulisse à l'intérieur d'un élément généralement fixé sur le bord supérieur du corps de pompe, et qui peut être une virole, une tourette ou similaire. Selon le type de pompe, l'interface entre la tige d'actionnement et la surface intérieure de la virole (ou de l'élément qui tient lieu de virole) peut être étanche ou non. En particulier, dans les dispositifs de distribution de produit fluide, qui soit fonctionnent sans reprise d'air, soit comportent un trou d'évent localisé à un endroit spécifique, par exemple pour y placer un filtre à bactéries approprié, la tige d'actionnement coulisse de préférence de manière étanche à l'intérieur de la virole. Toutefois, entre deux éléments généralement réalisés en matière plastique relativement dure, l'étanchéité n'est pas facile à obtenir, et il est parfois nécessaire d'introduire un frottement important entre ces deux éléments pour garantir une certaine étanchéité. D'autre part, avec ce type de pompe, par exemple lorsque l'utilisation est destinée à une distribution nasale, il peut arriver que l'utilisateur n'exerce pas une force exactement axiale sur la tige d'actionnement, ce qui a pour effet de soit empêcher l'actionnement de la pompe, soit d'altérer l'étanchéité entre la tige d'actionnement et la virole.A fluid dispenser pump conventionally comprises a pump body in which a piston connected to an actuating rod is sealingly slid. This actuating rod slides inside an element generally fixed on the upper edge of the pump body, and which may be a shell, a turret or the like. Depending on the type of pump, the interface between the actuating rod and the inner surface of the ferrule (or the element which acts as a ferrule) can be sealed or not. In particular, in the fluid dispensing devices, which are operating without air intake, or comprise a vent hole located at a specific location, for example to place a suitable bacteria filter, the actuating rod preferably slides in a sealed manner inside the shell. However, between two elements generally made of relatively hard plastic, the seal is not easy to obtain, and it is sometimes necessary to introduce a significant friction between these two elements to ensure a certain seal. On the other hand, with this type of pump, for example when the use is intended for a nasal distribution, it may happen that the user does not exert an exactly axial force on the actuating rod, which has the effect of effect of either preventing the actuation of the pump, or to alter the seal between the actuating rod and the ferrule.

Les documents US-5 979 711 qui divulgue les caracteristiques du préambule de la revendication 1, et US-5 992 704 décrivent des pompes ayant un piston externe autour de la tige d'actionnement d'un piston central.The documents U.S. 5,979,711 which discloses the features of the preamble of claim 1, and US-5,992,704 describe pumps having an outer piston around the actuating rod of a central piston.

La présente invention a pour but de fournir une pompe de distribution de produit fluide qui ne reproduit pas les inconvénients susmentionnés.The present invention aims to provide a fluid dispensing pump that does not reproduce the aforementioned drawbacks.

En particulier, la présente invention a pour but de fournir une pompe de distribution de produit fluide qui garantisse une parfaite étanchéité entre la tige d'actionnement et la virole, ou tout élément similaire coopérant avec la tige d'actionnement.In particular, the present invention aims to provide a fluid dispensing pump which ensures a perfect seal between the actuating rod and the ferrule, or any similar element cooperating with the actuating rod.

De plus, la présente invention a pour but de fournir une pompe de distribution de produit fluide qui soit simple et peu coûteuse à fabriquer et à assembler.In addition, the present invention aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.

La présente invention a également pour but de fournir une pompe de distribution de produit fluide qui permette un actionnement de la pompe même lorsque l'utilisateur exerce une force qui n'est pas exactement axiale sur ladite tige d'actionnement. Dans ce cas, on dit généralement que la pompe procure un effet rotule. Plus particulièrement, la présente invention a pour but de fournir une telle pompe à effet rotule qui garantisse également l'étanchéité entre la tige d'actionnement et la virole.It is another object of the present invention to provide a fluid dispensing pump which allows actuation of the pump even when the user exerts a force which is not exactly axial on said actuating rod. In this case, it is generally said that the pump provides a ball joint effect. More particularly, the object of the present invention is to provide such a ball-and-socket pump which also guarantees the seal between the actuating rod and the ferrule.

La présente invention a donc pour objet une pompe de distribution de produit fluide telle que décrite dans la revendication 1. Des modes de réalisation avantageux sont décrits dans les revendications dépendantes.The present invention therefore relates to a fluid dispenser pump as described in claim 1. Advantageous embodiments are described in the dependent claims.

La présente invention a également pour objet un dispositif de distribution de produit fluide, comportant une pompe telle que définie ci-dessus.The present invention also relates to a fluid dispenser device comprising a pump as defined above.

D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement au cours de la description détaillée suivante de deux modes de réalisation de la présente invention, donnés à titre d'exemples non limitatifs, en regard des dessins joints, sur lesquels,

  • la figure 1 est une vue schématique en section transversale d'une pompe selon un premier mode de réalisation de la présente invention, et
  • la figure 2 est une vue schématique en section transversale d'une pompe selon un second mode de réalisation de la présente invention.
Other features and advantages of the present invention will appear more clearly in the following detailed description of two embodiments of the present invention, given as non-limiting examples, with reference to the accompanying drawings, in which,
  • the figure 1 is a schematic cross-sectional view of a pump according to a first embodiment of the present invention, and
  • the figure 2 is a schematic cross-sectional view of a pump according to a second embodiment of the present invention.

En référence aux figures, la pompe comporte un corps de pompe 1 à l'intérieur duquel coulisse de manière étanche un piston 2 actionné au moyen d'une tige d'actionnement 10. La tige d'actionnement 10 est en général reliée à un élément tel qu'un poussoir (non représenté) sur lequel l'utilisateur appuie pour actionner la pompe. Sur le bord supérieur du corps de pompe 1 est montée une virole 4 à l'intérieure de laquelle coulisse la tige d'actionnement 10. Ladite virole 4 définit notamment la position de repos du piston 2. Bien entendu, il existe des pompes dans lesquelles la tige d'actionnement 10 coulisse dans un élément solidaire du corps de pompe qui n'est pas une virole et une telle mise en oeuvre est bien entendu équivalente pour la présente invention.With reference to the figures, the pump comprises a pump body 1 within which a piston 2 actuated by means of an actuating rod 10 seals tightly. The actuating rod 10 is generally connected to an element such as a pusher (not shown) on which the user presses to actuate the pump. On the upper edge of the pump body 1 is mounted a shell 4 inside which slides the actuating rod 10. Said ring 4 defines in particular the rest position of the piston 2. Of course, there are pumps in which the actuating rod 10 slides in a member integral with the pump body which is not a ferrule and such an implementation is of course equivalent for the present invention.

Selon la présente invention, la tige d'actionnement 10 comporte une partie tubulaire externe souple 11 et une partie tubulaire interne rigide 12 concentrique avec ladite partie tubulaire externe souple 11.According to the present invention, the actuating rod 10 comprises a flexible outer tubular portion 11 and a rigid inner tubular portion 12 concentric with said flexible outer tubular portion 11.

En référence à la figure 1, il est représenté un premier mode de réalisation de la présente invention. Dans ce premier mode de réalisation, la partie tubulaire externe souple 11 comporte une extrémité axiale libre 13, à savoir l'extrémité supérieure sur le dessin, et une seconde extrémité axiale 14 qui est solidaire de la tige d'actionnement 10. De préférence, cette partie tubulaire externe souple 11 est réalisée de manière monobloc avec la tige d'actionnement 10. Cette mise en oeuvre permet d'obtenir une étanchéité parfaite entre la surface intérieure de la virole 4 et la partie tubulaire souple 11 de la tige d'actionnement 10, en toute position de ladite tige d'actionnement. Cette mise en oeuvre permet également d'obtenir ce qu'on appelle l'effet rotule, c'est-à-dire une étanchéité et un actionnement possible de la tige d'actionnement, même lorsque la force exercée sur ladite tige d'actionnement 10 n'est pas exactement axiale. En effet, dans ce cas, la partie tubulaire externe souple 11 se déforme légèrement tout en permettant un déplacement de la tige d'actionnement et donc du piston 2 par rapport au corps de pompe 1.With reference to the figure 1 a first embodiment of the present invention is shown. In this first embodiment, the flexible outer tubular portion 11 has a free axial end 13, namely the upper end in the drawing, and a second axial end 14 which is integral with the actuating rod 10. Preferably, this flexible outer tubular portion 11 is made integrally with the actuating rod 10. This implementation makes it possible to obtain a perfect seal between the inner surface of the ferrule 4 and the flexible tubular portion 11 of the actuating rod 10, in any position of said actuating rod. This implementation also makes it possible to obtain what is called the ball joint effect, that is to say a seal and a possible actuation of the actuating rod, even when the force exerted on said actuating rod 10 is not exactly axial. Indeed, in this case, the flexible outer tubular portion 11 is slightly deformed while allowing movement of the actuating rod and therefore the piston 2 relative to the pump body 1.

En référence à la figure 2, il est représenté un second mode de réalisation de la présente invention, dans lequel les deux extrémités axiales 13 et 14 de la partie externe tubulaire souple 11 sont solidaires de la tige d'actionnement, en particulier ils sont réalisés de manière monobloc avec celle-ci. Dans ce cas, la partie tubulaire externe 11 est moins souple que dans le premier mode de réalisation de la figure 1, mais procure quand même une bonne étanchéité et un certain effet rotule. Un avantage de ce second mode de réalisation réside dans l'espace 18 existant entre les parties tubulaires externe et interne 11, 12 de la tige d'actionnement. En effet, comme visible sur la figure 2, cet espace 18 fait avantageusement partie de la chambre de dosage 20 de la pompe, qui est définie entre le clapet d'entrée 21 et le clapet de sortie 22 de la pompe. Le fait que l'espace 18 entre les deux parties tubulaires 11 et 12 de la tige d'actionnement 10 forme une partie de la chambre de dosage a pour effet que lors de l'actionnement, du produit mis sous pression dans la chambre de dosage exerce donc une pression radiale sur ladite partie tubulaire externe 11 pour favoriser davantage l'étanchéité entre la tige d'actionnement 10 et la virole 4. C'est donc la pression interne du produit lors de l'actionnement qui améliore dans ce cas l'étanchéité. Il est à noter qu'il existe aussi une certaine pression interne dans le mode de réalisation de la figure 1, au niveau du clapet haut 22, en raison de l'épaisseur réduite de la tige d'actionnement 10 à cet endroit formant la jonction entre les parties tubulaires externe et interne. Cette pression interne favorise également l'étanchéité entre la tige d'actionnement et la virole.With reference to the figure 2 , there is shown a second embodiment of the present invention, wherein the two axial ends 13 and 14 of the flexible tubular outer portion 11 are integral with the actuating rod, in particular they are made in a monoblock manner with the this. In this case, the outer tubular portion 11 is less flexible than in the first embodiment of the figure 1 , but still provides a good seal and some ball joint effect. An advantage of this second embodiment lies in the space 18 existing between the outer and inner tubular portions 11, 12 of the actuating rod. Indeed, as visible on the figure 2 this space 18 is advantageously part of the metering chamber 20 of the pump, which is defined between the inlet valve 21 and the outlet valve 22 of the pump. The fact that the space 18 between the two tubular portions 11 and 12 of the actuating rod 10 forms part of the metering chamber has the effect that during actuation, the product pressurized in the metering chamber therefore exerts a radial pressure on said outer tubular portion 11 to further promote the seal between the actuating rod 10 and the ferrule 4. It is therefore the internal pressure of the product during the actuation which improves in this case the seal. It should be noted that there is also some internal pressure in the embodiment of the figure 1 at the top valve 22 due to the reduced thickness of the actuating rod 10 at this point forming the junction between the outer and inner tubular portions. This internal pressure also promotes sealing between the actuating rod and the ferrule.

Bien entendu, les dessins des figures 1 et 2 représentent des modes de réalisation particuliers de la pompe, en particulier des clapets d'entrée et de sortie 21, 22 et donc de la chambre de dosage. Il est entendu que la présente invention s'applique à tout type de pompe et n'est pas limitée à ces modes de réalisation utilisés à titre d'exemple.Of course, the drawings of figures 1 and 2 represent particular embodiments of the pump, in particular inlet and outlet valves 21, 22 and therefore of the metering chamber. It is understood that the present invention applies to any type of pump and is not limited to these embodiments used by way of example.

La présente invention s'applique à tout type de pompe, et elle est notamment avantageuse dans une pompe à reprise d'air telle que représentée sur les dessins. En effet, dans les applications dites sans conservateur, un trou d'évent est prévu dans le dispositif de distribution de produit fluide, c'est-à-dire soit dans le réservoir, soit dans la pompe, ou encore dans la bague de fixation de la pompe sur le réservoir. Pour éviter une contamination du produit à l'intérieur du réservoir, on prévoit un filtre approprié au niveau du trou d'évent. Dans l'exemple représenté sur les dessins, le filtre est disposé entre la virole 4 et la bague de fixation 30 de la pompe sur le réservoir (non représenté). Ce filtre 40 filtre donc l'air du passage d'éventation. Il est dans ce type de dispositif essentiel que la totalité de l'air entrant à l'intérieur du réservoir passe à travers le filtre. C'est donc une exigence essentielle d'assurer une étanchéité parfaite entre la tige d'actionnement et la virole lorsque le passage d'éventation est situé à l'extérieur de la virole 4, comme dans l'exemple représenté sur les dessins. En se référant plus particulièrement à la figure 2, le passage d'air est désigné schématiquement par la référence numérique 50 et s'étend à partir de l'extérieur entre la bague de fixation 30 et la virole 4, puis à travers le filtre 40, puis entre l'extérieur de la virole 4 et l'intérieur du corps de pompe 1, pour finalement déboucher à l'intérieur du réservoir à travers un orifice 50 prévu dans le corps de pompe par le piston 2. Comme visible sur les figures, cet orifice 50 est obturé en position de repos de la pompe par le piston 2. Ceci a un effet particulièrement avantageux pour un grand nombre d'applications, dans lesquelles le produit contenu à l'intérieur du réservoir ne doit en aucun cas venir en contact avec le filtre, ce qui pourrait amener une contamination du produit. Dans l'exemple représenté, l'orifice 50 du corps de pompe est obturé par le piston 2 en position de repos de la pompe, et le filtre est isolé de l'intérieur du réservoir par un joint de col 60 qui est monté entre la bague de fixation 30, le corps de pompe 1 et le réservoir (non représenté). Dans ce cas, le joint de col 60 est monté de manière étanche autour du corps de pompe 1, empêchant ainsi tout contact entre le produit et le filtre 40.The present invention applies to any type of pump, and is particularly advantageous in a return air pump as shown in the drawings. Indeed, in so-called non-conservative applications, a vent hole is provided in the fluid dispensing device, that is to say either in the tank, in the pump, or in the fixing ring. pump on the tank. To prevent contamination of the product inside the tank, an appropriate filter is provided at the vent hole. In the example shown in the drawings, the filter is disposed between the ferrule 4 and the fixing ring 30 of the pump on the reservoir (not shown). This filter 40 thus filters the air of the vent passage. It is in this type of essential device that all the air entering the tank passes through the filter. It is therefore an essential requirement to ensure a perfect seal between the actuating rod and the shell when the venting passage is located outside the shell 4, as in the example shown in the drawings. With particular reference to the figure 2 , the air passage is designated schematically by the numeral 50 and extends from the outside between the fixing ring 30 and the ferrule 4, then through the filter 40, and between the outside of the ferrule 4 and the inside of the pump body 1, to finally open into the tank through an orifice 50 provided in the pump body by the piston 2. As shown in the figures, this orifice 50 is closed in the position of This has a particularly advantageous effect for a large number of applications, in which the product contained inside the tank must in no case come into contact with the filter, which could lead to contamination of the product. In the example shown, the orifice 50 of the pump body is closed by the piston 2 in the rest position of the pump, and the filter is insulated from the interior of the tank by a neck seal 60 which is mounted between the fixing ring 30, the pump body 1 and the tank (not shown). In this case, the neck seal 60 is sealingly mounted around the pump body 1, thus preventing any contact between the product and the filter 40.

Bien que la présente invention ait été décrite en référence à deux modes de réalisation particuliers de celle-ci, il est entendu que diverses modifications et changements peuvent y être apportés dans sortir du cadre de la présente invention définie par les revendications annexées.Although the present invention has been described with reference to two particular embodiments thereof, it is understood that various modifications and changes may be made thereto within the scope of the present invention defined by the appended claims.

Claims (5)

  1. A fluid dispenser pump comprising a pump body (1) in which a piston (2) connected to an actuating rod (10) is slidably mounted in leaktight manner, said actuating rod (10) being mounted to slide inside an element (4), and including a flexible outer tubular portion (11) that is in leaktight contact with said element (4), and a rigid inner tubular portion (12) that is concentric with said flexible outer tubular portion (11), said flexible outer tubular portion (11) having two axial ends (13,14), characterized in that the zone of contact on said flexible outer tubular portion (11) between the inside of said element (4) and the actuating rod (10) is, at least in rest position, at a distance of said axial ends (13,14), said zone of contact being leaktight regardless of the position of said actuating rod (10), and in that said element (4) is mounted on the top edge of the pump body (1), such as a ferrule.
  2. A pump according to claim 1, in which the flexible outer tubular portion (11) has a first axial end (13) that is free, and a second axial end (14) that is secured to or integral with said actuating rod (10) and in particular integral therewith.
  3. A pump according to claim 1, in which both of the axial ends (13, 14) of the flexible outer tubular portion (11) are secured to or integral with the actuating rod (10) and in particular integral therewith.
  4. A pump according to claim 3, in which a metering chamber (20) is defined between an inlet valve (21) and an outlet valve (22), the space (18) between the outer tubular portion (11) and the inner tubular portion (12) of the actuating rod (10) being part of said metering chamber (20).
  5. A fluid dispenser device including a pump according to any preceding claim.
EP01945442A 2000-07-07 2001-06-14 Fluid product dispensing pump Expired - Lifetime EP1299193B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0008919A FR2811383B1 (en) 2000-07-07 2000-07-07 FLUID PRODUCT DISPENSING PUMP
FR0008919 2000-07-07
PCT/FR2001/001861 WO2002004128A1 (en) 2000-07-07 2001-06-14 Fluid product dispensing pump

Publications (2)

Publication Number Publication Date
EP1299193A1 EP1299193A1 (en) 2003-04-09
EP1299193B1 true EP1299193B1 (en) 2011-09-21

Family

ID=8852264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01945442A Expired - Lifetime EP1299193B1 (en) 2000-07-07 2001-06-14 Fluid product dispensing pump

Country Status (6)

Country Link
US (1) US6817490B2 (en)
EP (1) EP1299193B1 (en)
JP (1) JP2004502533A (en)
CN (1) CN1182922C (en)
FR (1) FR2811383B1 (en)
WO (1) WO2002004128A1 (en)

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EP3708260A1 (en) * 2019-03-13 2020-09-16 Hans Georg Hagleitner Dispensing kit with a dispensing device and at least one container containing a pumpable medium

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KR101767063B1 (en) 2010-12-29 2017-08-10 엘지전자 주식회사 Hermetic compressor
KR101795506B1 (en) 2010-12-29 2017-11-10 엘지전자 주식회사 Hermetic compressor
KR101801676B1 (en) 2010-12-29 2017-11-27 엘지전자 주식회사 Hermetic compressor
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EP3708260A1 (en) * 2019-03-13 2020-09-16 Hans Georg Hagleitner Dispensing kit with a dispensing device and at least one container containing a pumpable medium

Also Published As

Publication number Publication date
CN1182922C (en) 2005-01-05
US20030155378A1 (en) 2003-08-21
CN1440313A (en) 2003-09-03
WO2002004128A1 (en) 2002-01-17
US6817490B2 (en) 2004-11-16
EP1299193A1 (en) 2003-04-09
FR2811383B1 (en) 2002-12-13
JP2004502533A (en) 2004-01-29
FR2811383A1 (en) 2002-01-11

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