WO2005028120A1 - Fluid product distributor pump - Google Patents

Fluid product distributor pump Download PDF

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Publication number
WO2005028120A1
WO2005028120A1 PCT/FR2004/002233 FR2004002233W WO2005028120A1 WO 2005028120 A1 WO2005028120 A1 WO 2005028120A1 FR 2004002233 W FR2004002233 W FR 2004002233W WO 2005028120 A1 WO2005028120 A1 WO 2005028120A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
pump
pump according
valve seat
laqueue
Prior art date
Application number
PCT/FR2004/002233
Other languages
French (fr)
Inventor
François LE MANER
Original Assignee
Valois Sas
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valois Sas filed Critical Valois Sas
Priority to JP2006525854A priority Critical patent/JP2007505256A/en
Priority to DE602004012586T priority patent/DE602004012586T2/en
Priority to EP04787288A priority patent/EP1673176B1/en
Priority to US10/571,056 priority patent/US20070029347A1/en
Publication of WO2005028120A1 publication Critical patent/WO2005028120A1/en

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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
    • B05B11/1016—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

Definitions

  • the present invention relates to a fluid dispenser pump and a fluid dispenser device comprising such a pump.
  • Pumps are well known for dispensing fluid or pulverulent products, in particular in the field of pharmacy, perfumery or cosmetics. These pumps often have a pump body which contains a pump chamber in which a piston slides in leaktight manner to achieve metered delivery of product in the pump chamber.
  • the pump chamber When the pump is dosing, the pump chamber generally comprises an inlet valve and an outlet valve, which, when both are closed, define the volume of the dose to be dispensed.
  • the tightness of the outlet valve in the closed position serves firstly to avoid leaks during actuation, but also to avoid any contamination of the product contained in the pump chamber in the rest position.
  • the object of the present invention is to provide a fluid dispensing pump which fulfills the above-mentioned requirements optimally, without reproducing the drawbacks of the pumps of the prior art. More particularly, the present invention aims to provide a fluid dispensing pump which ensures perfect sealing in the closed position of the outlet valve of the pump chamber.
  • the present invention also aims to provide a fluid dispensing pump which operates in a safe and reliable manner and which guarantees the precise and reproducible distribution of a dose of product each time the pump is actuated.
  • the present invention also aims to provide a fluid dispensing pump which is simple and inexpensive to manufacture and assemble.
  • the present invention therefore relates to a fluid dispensing pump comprising a pump body, a pump chamber provided with an inlet valve and an outlet valve, and a piston flowing in said pump body for dispensing the product contained in the pump chamber, said outlet valve comprising a valve element cooperating with a valve seat, said outlet valve comprising deformable sealing means provided between said valve seat and said valve element, said sealing means being elastically deformed in the closed position of said outlet valve to improve sealing.
  • said piston is integral with an actuating rod, said actuating rod being hollow and defining an expulsion channel for the product, said valve seat being formed in said expulsion channel.
  • the outlet valve is biased towards its closed position by a spring, said valve being opened by the pressure of the product contained in the pump chamber.
  • said deformable sealing means are formed on the valve element.
  • said deformable sealing means are formed on the valve seat.
  • said deformable sealing means comprise at least one deformable annular lip.
  • said annular lip is flexible and cooperates with a frustoconical surface in the closed position of the valve.
  • said annular lip is produced by overmolding.
  • the valve seat has a flexible annular lip cooperating with a frustoconical valve element, said valve element being substantially rigid.
  • the valve seat is made of bi-material, said annular lip being made of a softer material than the rest of the valve seat.
  • said deformable sealing means comprise a deformable annular seal.
  • said annular seal cooperates with a frustoconical surface in the closed position of the valve.
  • said seal is fixed by fitting, snap-fastening or overmolding.
  • valve element is substantially rigid and comprises a deformable annular seal cooperating with a frustoconical valve seat, said valve seat being substantially rigid.
  • the present invention also relates to a device for dispensing a fluid product comprising a pump as described above.
  • Figure 1 is a schematic cross-sectional view of a pump according to a first embodiment of the present invention
  • - Figure 2 is a view similar to that of Figure 1 showing a second embodiment of the present invention.
  • the pump comprises a pump body 10 in which slides a piston 50 secured to an actuating rod 5.
  • This rod actuation 5 is advantageously hollow and defines an expulsion channel 4 for the product.
  • the pump body 10 contains a pump chamber 20 which is defined between an inlet valve 30 and an outlet valve 40.
  • the outlet valve 40 and the inlet valve 41 comprises the same element valve 41.
  • the valve seat 42 comprises at least one flexible deformable lip 45 which, in the outlet valve closed position 40, cooperates with the valve element 41.
  • This valve element 41 is preferably rigid and advantageously comprises a frustoconical surface at its surface which cooperates with the flexible lip 45.
  • the lip 45 is deformed to improve the seal in this closed position.
  • the lip 45 can be produced in a single piece with the remainder of the valve seat 42, and in particular with the actuation rod 5 and the piston 50 , in the example of FIG. 1.
  • the lip 45 could be molded onto the valve seat 42, in which case it could be made of a softer material than the remainder of the valve seat, and in particular that the remainder of the rod actuation 5.
  • This implementation improves the seal even more, while maintaining the rigidity necessary for the other components of the pump.
  • the outlet valve 40 is biased towards its closed position by a spring 70, preferably the return spring of the pump which returns it to its rest position.
  • the outlet valve 40 is advantageously opened by the pressure of the product contained in the pump chamber 20.
  • the outlet valve could be urged towards its closed position by the pressure of the product contained in the pump chamber during pump activation.
  • valve element 41 would comprise a flexible or deformable sealing lip which cooperated with a seat valve 42, which could for example be frustoconical.
  • Figure 2 shows a second embodiment of the present invention.
  • the deformable sealing element is formed by an annular seal disposed on the valve element 41.
  • This annular seal can be fixed to the valve element 41 by fitting, snap-fastening or overmolding.
  • this annular seal is made of a softer material than the rest of the valve element 41 which improves the seal in the closed position.
  • the annular seal 46 advantageously cooperates with a frustoconical surface of the valve seat 42.
  • fixing the annular seal not on the element of valve 41 but on the valve seat 42 in which case it would be a frustoconical valve element, such as that of FIG. 1, which would advantageously be used to cooperate with this annular seal 46 which would be integral with the valve seat 42.
  • the fact of providing a frustoconical surface to cooperate with the deformable sealing element (lip 45 or seal 46) not only ensures centering of the valve element 41 on the valve seat 42, but also makes it possible to ensure sealing during actuation even if the force exerted by the user on the actuating rod 5 is not entirely axial.
  • the pump of the present invention is obviously intended to be fixed on a reservoir (not shown), for example by means of a fixing ring
  • a dispensing head (not shown) can also be assembled on the actuating rod 5 to dispense the product from the pump.

Abstract

The invention relates to a fluid product distributor pump comprising: a pump casing (10), a pump chamber (20) which is equipped with an inlet valve (30) and an outlet valve (40), and a piston (50) which slides inside the aforementioned pump casing (10) in order to distribute the product contained in the pump chamber (20). The aforementioned outlet valve (40) comprises a valve element (41) which co-operates with a valve seat (42), said outlet valve (40) comprising deformable sealing means (45, 46) which are provided between the valve seat (42) and the valve element (41). According to the invention, the sealing means (45, 46) are elastically deformed in the closed position of the outlet valve (40) in order to provide improved sealing.

Description

Pompe de distribution de produit fluide Fluid dispensing pump
La présente invention concerne une pompe de distribution de produit fluide ainsi qu'un dispositif de distribution de produit fluide comportant une telle pompe. Les pompes sont bien connues pour distribuer des produits fluides ou pulvérulents, notamment dans le domaine de la pharmacie, de la parfumerie ou de la cosmétique. Ces pompes comportent souvent un corps de pompe qui contient une chambre de pompe dans laquelle coulisse un piston de manière étanche pour réaliser la distribution de manière dosée produit du contenu dans la chambre de pompe. Lorsque la pompe est doseuse, la chambre de pompe comporte généralement un clapet d'entrée et clapet de sortie, qui, lorsqu'ils sont fermés tout les deux, définissent le volume de la dose à distribuer. L'étanchéité du clapet de sortie en position de fermeture sert d'une part à éviter les fuites pendant l'actionnement, mais également à éviter toute contamination du produit contenu dans la chambre de pompe en position de repos. Particulièrement dans le domaine de la pharmacie, où un dosage précis et reproductible est souvent exigé, tout risque de fuite, et donc de diminution de dose est non souhaitable. Par conséquent, l'exigence d'étanchéité au niveau du clapet de sortie est très importante. D'un autre côté, il ne faut pas qu'une étanchéité trop importante en position de fermeture du clapet de sortie affecte le bon fonctionnement dudit clapet, par exemple en le bloquant en position de fermeture, ce qui empêcherait un bon fonctionnement de la pompe et donc une distribution correcte de la dose. La présente invention a pour but de fournir une pompe de distribution de produit fluide qui remplit les exigences susmentionnées de manière optimale, sans reproduire les inconvénients des pompes de l'art antérieur. Plus particulièrement, la présente invention a pour but de fournir une pompe de distribution de produit fluide qui assure une parfaite étanchéité en position de fermeture du clapet de sortie de la chambre de pompe. La présente invention a également pour but de fournir une pompe de distribution de produit fluide qui fonctionne de manière sure et fiable et qui garantit la distribution précise et reproductible d'une dose de produit à chaque actionnement de la pompe. La présente invention a aussi pour but de fournir une pompe de distribution de produit fluide qui soit simple et peu coûteuse à fabriquer et à assembler. La présente invention a donc pour objet une pompe de distribution de produit fluide comportant un corps de pompe, une chambre de pompe pourvue d'un clapet d'entrée et d'un clapet de sortie, et un piston couUssant dans ledit corps de pompe pour distribuer le produit contenu dans la chambre de pompe, ledit clapet de sortie comportant un élément de clapet coopérant avec un siège de clapet, ledit clapet de sortie comportant des moyens d'étanchéité déformables prévus entre ledit siège de clapet et ledit élément de clapet, lesdits moyens d'étanchéité étant déformés élastiquement en position de fermeture dudit clapet de sortie pour améliorer l'étanchéité. Avantageusement, ledit piston est solidaire d'une tige d' actionnement, ladite tige d' actionnement étant creuse et définissant un canal d'expulsion pour le produit, ledit siège de clapet étant formé dans ledit canal d'expulsion. Avantageusement, pendant l' actionnement de la pompe, le clapet de sortie est sollicité vers sa position de fermeture par un ressort, ledit clapet étant ouvert par la pression du produit contenu dans la chambre de pompe. Selon une première variante de réalisation de l'invention lesdits moyens d'étanchéité déformables sont formés sur l'élément de clapet. Selon une seconde variante de réalisation de l'invention lesdits moyens d'étanchéité déformables sont formés sur le siège de clapet. Selon un premier mode de réalisation de la présente invention lesdits moyens d'étanchéité déformables comportent au moins une lèvre annulaire deformable. Avantageusement, ladite lèvre annulaire est flexible et coopère avec une surface tronconique en position de fermeture du clapet. Avantageusement, ladite lèvre annulaire est réalisée par surmoulage. Avantageusement, le siège de clapet comporte une lèvre annulaire flexible coopérant avec un élément de clapet tronconique, ledit élément de clapet étant sensiblement rigide. - Avantageusement, le siège de clapet est réalisé en bi-matière, ladite lèvre annulaire étant réalisée en un matériau plus mou que le restant du siège de clapet. Selon un second mode de réalisation de la présente invention lesdits moyens d'étanchéité déformables comportent un joint annulaire deformable. Avantageusement, ledit joint annulaire coopère avec une surface tronconique en position de fermeture du clapet. Avantageusement, ledit joint est fixé par emmanchage, encliquetage ou surmoulage. Avantageusement, l'élément de clapet est sensiblement rigide et comporte un joint annulaire deformable coopérant avec un siège de clapet tronconique, ledit siège de clapet étant sensiblement rigide. La présente invention a aussi pour objet un dispositif de distribution de produit fluide comportant une pompe telle que décrite ci-dessus. 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 celle-ci, faite en référence aux dessins joints, donnés à titre d'exemples non Umitatifs, et 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 similaire à celle de la figure 1 montrant un second mode de réalisation de la présente invention. Les figures représentent un exemple de pompe, mais il est entendu que la présente invention s'applique à tous types de pompe, avec des structures différentes de celles représentées sur les dessins. En référence à la figure 1, la pompe comporte un corps de pompe 10 dans laquelle coulisse un piston 50 solidaire d'une tige d' actionnement 5. Cette tige d' actionnement 5 est avantageusement creuse et définit un canal d'expulsion 4 pour le produit. Le corps de pompe 10 contient une chambre de pompe 20 qui est définie entre un clapet d'entrée 30 et un clapet de sortie 40. Dans l'exemple représenté, le clapet de sortie 40 et le clapet d'entrée 41 comporte un même élément de clapet 41. Celui-ci est respectivement sollicité contre un siège de clapet d'entrée 32, avantageusement solidaire du corps de pompe 10, en position de fermeture du clapet d'entrée 30, et contre un siège de clapet de sortie 42, avantageusement solidaire de la tige d'actiormement 5, et de préférence défini au niveau du canal d'expulsion 4, en position de fermeture du clapet de sortie 40. Bien entendu, la présente invention s'appliquerait également aux pompes dans lesquels les éléments de clapet d'entrée 30 et de sortie 40 seraient différents, par exemple complètement séparés. La présente invention concerne plus spécifiquement le clapet de sortie 40 de la chambre de pompe 20, et toutes les autres composantes de la pompe pourraient être modifiées. Nous ne décrirons donc pas plus en détail cette pompe ci-après, puisque les autres éléments de cette pompe n'interviennent pas directement dans la présente invention. En référence à la figure 1, il est représenté un premier mode de réalisation de l'invention. Selon ce premier mode de réalisation, le siège de clapet 42 comporte au moins une lèvre deformable flexible 45 qui, en position de fermeture de clapet de sortie 40, coopère avec l'élément de clapet 41. Cet élément de clapet 41 est de préférence rigide et comporte avantageusement une surface tronconique au niveau de sa surface qui coopère avec la lèvre flexible 45. Comme visible sur la figure 1, en position de fermeture du clapet 40, la lèvre 45 est déformée pour améliorer l'étanchéité dans cette position de fermeture. En variante, on pourrait envisager deux ou plusieurs lèvres coopérant avec l'élément de clapet 41. La lèvre 45 peut être réalisée de manière monobloc avec le restant du siège de clapet 42, et notamment avec la tige d' actionnement 5 et le piston 50, dans l'exemple de la figure 1. En variante, la lèvre 45 pourrait être surmoulée sur le siège de clapet 42, auxquels cas elle pourra être réalisée en un matériau plus mou que le restant du siège de clapet, et notamment que le restant de la tige d' actionnement 5. Cette mise en oeuvre permet d'améliorer l'étanchéité encore d'avantage, tout en maintenant la rigidité nécessaire pour les autres éléments constitutifs de la pompe. De préférence, et ceci est également valable pour le mode de réalisation représenté sur la figure 2, le clapet de sortie 40 est sollicité vers sa position de fermeture par un ressort 70, de préférence le ressort de rappel de la pompe qui la ramène vers sa position de repos. L'ouverture du clapet de sortie 40 se fait avantageusement par la pression du produit contenu dans la chambre de pompe 20. En variante, le clapet de sortie pourrait être sollicité vers sa position de fermeture par la pression du produit contenu dans la chambre de pompe pendant l'actionnement de la pompe. L'ouverture du clapet de sortie pourrait alors se faire en fin de course d'actiormement, par exemple mécaniquement. Ce ressort 70 ou cette pression du produit qui solUcite le clapet de sortie 40 vers sa position de fermeture améliore encore davantage l'étanchéité en position de fermeture du clapet de sortie et particulièrement pendant l'actionnement de la pompe, ce qui empêche toute fuite du produit et donc perte de dose. En variante au mode de réalisation représenté sur la figure 1, on pourrait envisager un mode de réalisation inverse, c'est-à-dire dans lequel l'élément de clapet 41 comporterait une lèvre d'étanchéité flexible ou deformable qui coopérait avec un siège de clapet 42, qui pourrait par exemple être tronconique. La figure 2 représente un second mode réaUsation de la présente invention. Dans ce second mode de réalisation, l'élément d'étanchéité deformable est formé par un joint annulaire disposé sur l'élément de clapet 41.The present invention relates to a fluid dispenser pump and a fluid dispenser device comprising such a pump. Pumps are well known for dispensing fluid or pulverulent products, in particular in the field of pharmacy, perfumery or cosmetics. These pumps often have a pump body which contains a pump chamber in which a piston slides in leaktight manner to achieve metered delivery of product in the pump chamber. When the pump is dosing, the pump chamber generally comprises an inlet valve and an outlet valve, which, when both are closed, define the volume of the dose to be dispensed. The tightness of the outlet valve in the closed position serves firstly to avoid leaks during actuation, but also to avoid any contamination of the product contained in the pump chamber in the rest position. Particularly in the pharmacy field, where a precise and reproducible dosage is often required, any risk of leakage, and therefore of dose reduction, is undesirable. Therefore, the sealing requirement at the outlet valve is very important. On the other hand, an excessively tight seal in the closed position of the outlet valve must not affect the proper functioning of said valve, for example by blocking it in the closed position, which would prevent proper operation of the pump. and therefore a correct distribution of the dose. The object of the present invention is to provide a fluid dispensing pump which fulfills the above-mentioned requirements optimally, without reproducing the drawbacks of the pumps of the prior art. More particularly, the present invention aims to provide a fluid dispensing pump which ensures perfect sealing in the closed position of the outlet valve of the pump chamber. The present invention also aims to provide a fluid dispensing pump which operates in a safe and reliable manner and which guarantees the precise and reproducible distribution of a dose of product each time the pump is actuated. The present invention also aims to provide a fluid dispensing pump which is simple and inexpensive to manufacture and assemble. The present invention therefore relates to a fluid dispensing pump comprising a pump body, a pump chamber provided with an inlet valve and an outlet valve, and a piston flowing in said pump body for dispensing the product contained in the pump chamber, said outlet valve comprising a valve element cooperating with a valve seat, said outlet valve comprising deformable sealing means provided between said valve seat and said valve element, said sealing means being elastically deformed in the closed position of said outlet valve to improve sealing. Advantageously, said piston is integral with an actuating rod, said actuating rod being hollow and defining an expulsion channel for the product, said valve seat being formed in said expulsion channel. Advantageously, during actuation of the pump, the outlet valve is biased towards its closed position by a spring, said valve being opened by the pressure of the product contained in the pump chamber. According to a first alternative embodiment of the invention, said deformable sealing means are formed on the valve element. According to a second alternative embodiment of the invention, said deformable sealing means are formed on the valve seat. According to a first embodiment of the present invention, said deformable sealing means comprise at least one deformable annular lip. Advantageously, said annular lip is flexible and cooperates with a frustoconical surface in the closed position of the valve. Advantageously, said annular lip is produced by overmolding. Advantageously, the valve seat has a flexible annular lip cooperating with a frustoconical valve element, said valve element being substantially rigid. - Advantageously, the valve seat is made of bi-material, said annular lip being made of a softer material than the rest of the valve seat. According to a second embodiment of the present invention, said deformable sealing means comprise a deformable annular seal. Advantageously, said annular seal cooperates with a frustoconical surface in the closed position of the valve. Advantageously, said seal is fixed by fitting, snap-fastening or overmolding. Advantageously, the valve element is substantially rigid and comprises a deformable annular seal cooperating with a frustoconical valve seat, said valve seat being substantially rigid. The present invention also relates to a device for dispensing a fluid product comprising a pump as described above. Other characteristics and advantages of the present invention will appear more clearly during the following detailed description of two embodiments thereof, given with reference to the accompanying drawings, given by way of non-illustrative examples, and in which: Figure 1 is a schematic cross-sectional view of a pump according to a first embodiment of the present invention; and - Figure 2 is a view similar to that of Figure 1 showing a second embodiment of the present invention. The figures represent an example of a pump, but it is understood that the present invention applies to all types of pump, with structures different from those shown in the drawings. Referring to Figure 1, the pump comprises a pump body 10 in which slides a piston 50 secured to an actuating rod 5. This rod actuation 5 is advantageously hollow and defines an expulsion channel 4 for the product. The pump body 10 contains a pump chamber 20 which is defined between an inlet valve 30 and an outlet valve 40. In the example shown, the outlet valve 40 and the inlet valve 41 comprises the same element valve 41. The latter is respectively urged against an inlet valve seat 32, advantageously secured to the pump body 10, in the closed position of the inlet valve 30, and against an outlet valve seat 42, advantageously secured to the actuator rod 5, and preferably defined at the expulsion channel 4, in the closed position of the outlet valve 40. Of course, the present invention would also apply to pumps in which the valve elements inlet 30 and outlet 40 would be different, for example completely separate. The present invention relates more specifically to the outlet valve 40 of the pump chamber 20, and all the other components of the pump could be modified. We will therefore not describe this pump in more detail below, since the other elements of this pump are not directly involved in the present invention. Referring to Figure 1, there is shown a first embodiment of the invention. According to this first embodiment, the valve seat 42 comprises at least one flexible deformable lip 45 which, in the outlet valve closed position 40, cooperates with the valve element 41. This valve element 41 is preferably rigid and advantageously comprises a frustoconical surface at its surface which cooperates with the flexible lip 45. As can be seen in FIG. 1, in the closed position of the valve 40, the lip 45 is deformed to improve the seal in this closed position. As a variant, one could envisage two or more lips cooperating with the valve element 41. The lip 45 can be produced in a single piece with the remainder of the valve seat 42, and in particular with the actuation rod 5 and the piston 50 , in the example of FIG. 1. As a variant, the lip 45 could be molded onto the valve seat 42, in which case it could be made of a softer material than the remainder of the valve seat, and in particular that the remainder of the rod actuation 5. This implementation improves the seal even more, while maintaining the rigidity necessary for the other components of the pump. Preferably, and this also applies to the embodiment shown in FIG. 2, the outlet valve 40 is biased towards its closed position by a spring 70, preferably the return spring of the pump which returns it to its rest position. The outlet valve 40 is advantageously opened by the pressure of the product contained in the pump chamber 20. As a variant, the outlet valve could be urged towards its closed position by the pressure of the product contained in the pump chamber during pump activation. The opening of the outlet valve could then be done at the end of the movement, for example mechanically. This spring 70 or this pressure of the product which solUcit the outlet valve 40 towards its closed position further improves the sealing in the closed position of the outlet valve and particularly during actuation of the pump, which prevents any leakage of the product and therefore loss of dose. As an alternative to the embodiment shown in FIG. 1, one could envisage a reverse embodiment, that is to say in which the valve element 41 would comprise a flexible or deformable sealing lip which cooperated with a seat valve 42, which could for example be frustoconical. Figure 2 shows a second embodiment of the present invention. In this second embodiment, the deformable sealing element is formed by an annular seal disposed on the valve element 41.
Ce joint annulaire peut être fixé sur l'élément de clapet 41 par emmanchage, encliquetage ou surmoulage. Avantageusement, ce joint annulaire est réalisé en un matériau plus mou que le restant de l'élément de clapet 41 ce qui améliore l'étanchéité en position de fermeture. Comme représenté sur la figure 2, le joint annulaire 46 coopère avantageusement avec une surface tronconique du siège de clapet 42. En variante au mode de réaUsation représenté sur la figure 2, on pourrait envisager de fixer le joint annulaire non pas sur l'élément de clapet 41 mais sur le siège de clapet 42 auquel cas ce serait un élément de clapet tronconique, comme celui de la figure 1, qui serait avantageusement utilisé pour coopérer avec ce joint annulaire 46 qui serait solidaire du siège de clapet 42. Le fait de prévoir une surface tronconique pour coopérer avec l'élément d'étanchéité deformable (lèvre 45 ou joint 46) assure non seulement un centrage de l'élément de clapet 41 sur le siège de clapet 42, mais permet également d'assurer l'étanchéité pendant l'actionnement même si la force exercée par l'utiUsateur sur la tige d'actionnement 5 n'est pas tout à fait axiale. La pompe de la présente invention est évidemment destinée à être fixée sur un réservoir (non représenté), par exemple au moyen d'une bague de fixationThis annular seal can be fixed to the valve element 41 by fitting, snap-fastening or overmolding. Advantageously, this annular seal is made of a softer material than the rest of the valve element 41 which improves the seal in the closed position. As shown in Figure 2, the annular seal 46 advantageously cooperates with a frustoconical surface of the valve seat 42. As an alternative to the embodiment shown in Figure 2, one could consider fixing the annular seal not on the element of valve 41 but on the valve seat 42 in which case it would be a frustoconical valve element, such as that of FIG. 1, which would advantageously be used to cooperate with this annular seal 46 which would be integral with the valve seat 42. The fact of providing a frustoconical surface to cooperate with the deformable sealing element (lip 45 or seal 46) not only ensures centering of the valve element 41 on the valve seat 42, but also makes it possible to ensure sealing during actuation even if the force exerted by the user on the actuating rod 5 is not entirely axial. The pump of the present invention is obviously intended to be fixed on a reservoir (not shown), for example by means of a fixing ring
60, qui dans l'exemple représenté serait une capsule à sertir. Bien entendu, d'autres variantes sont envisageables. Par ailleurs une tête de distribution (non représenté) peut également être assemblée sur la tige d'actionnement 5 pour distribuer le produit issu de la pompe. Bien que la présente invention ait été décrite en référence à deux modes de réaUsation de celle-ci, il est entendu qu'elle n'est pas limitée par les exemples représentés. Au contraire, un homme du métier peut y apporter toutes modifications utiles sans sortir du cadre de la présente invention tel que défini par les revendications annexées. 60, which in the example shown would be a crimp cap. Of course, other variants are possible. Furthermore, a dispensing head (not shown) can also be assembled on the actuating rod 5 to dispense the product from the pump. Although the present invention has been described with reference to two modes of realization thereof, it is understood that it is not limited by the examples shown. On the contrary, a person skilled in the art can make any useful modifications to it without departing from the scope of the present invention as defined by the appended claims.

Claims

Revendications claims
1.- Pompe de distribution de produit fluide comportant un corps de pompe (10), une chambre de pompe (20) pourvue d'un clapet d'entrée (30) et d'un clapet de sortie (40), et un piston (50) coulissant dans ledit corps de pompe (10) pour distribuer le produit contenu dans la chambre de pompe (20), ledit clapet de sortie (40) comportant un élément de clapet (41) coopérant avec un siège de clapet (42), caractérisé en ce que ledit clapet de sortie (40) comporte des moyens d'étanchéité déformables (45, 46) prévus entre ledit siège de clapet (42) et ledit élément de clapet (41), lesdits moyens d'étanchéité (45, 46) étant déformés élastiquement en position de fermeture dudit clapet de sortie (40) pour améUorer l'étanchéité. 1.- Fluid product distribution pump comprising a pump body (10), a pump chamber (20) provided with an inlet valve (30) and an outlet valve (40), and a piston (50) sliding in said pump body (10) to dispense the product contained in the pump chamber (20), said outlet valve (40) comprising a valve element (41) cooperating with a valve seat (42) , characterized in that said outlet valve (40) comprises deformable sealing means (45, 46) provided between said valve seat (42) and said valve element (41), said sealing means (45, 46) being elastically deformed in the closed position of said outlet valve (40) to improve sealing.
2.- Pompe selon la revendication 1, dans laqueUe ledit piston (50) est solidaire d'une tige d'actionnement (5), ladite tige d'actionnement étant creuse et définissant un canal d'expulsion (4) pour le produit, ledit siège de clapet (42) étant formé dans ledit canal d'expulsion (4). 2. A pump according to claim 1, in which said piston (50) is integral with an actuating rod (5), said actuating rod being hollow and defining an expulsion channel (4) for the product, said valve seat (42) being formed in said expulsion channel (4).
3.- Pompe selon la revendication 1 ou 2, dans laquelle, pendant l'actionnement de la pompe, le clapet de sortie (40) est soUicité vers sa position de fermeture par un ressort (70), ledit clapet (40) étant ouvert par la pression du produit contenu dans la chambre de pompe (20). 3.- Pump according to claim 1 or 2, wherein, during actuation of the pump, the outlet valve (40) is soUicité towards its closed position by a spring (70), said valve (40) being open by the pressure of the product contained in the pump chamber (20).
4.- Pompe selon l'une quelconque des revendications précédentes, dans laquelle lesdits moyens d'étanchéité déformables (45, 46) sont formés sur l'élément de clapet (41). 4.- Pump according to any one of the preceding claims, wherein said deformable sealing means (45, 46) are formed on the valve member (41).
5.- Pompe selon l'une quelconque des revendications 1 à 3, dans laquelle lesdits moyens d'étanchéité déformables (45, 46) sont formés sur le siège de clapet (42). 5.- Pump according to any one of claims 1 to 3, wherein said deformable sealing means (45, 46) are formed on the valve seat (42).
6.- Pompe selon la revendication 4 ou 5, dans laqueUe lesdits moyens d'étanchéité déformables comportent au moins une lèvre annulaire deformable (45). 6.- Pump according to claim 4 or 5, in laqueUe said deformable sealing means comprise at least one deformable annular lip (45).
7.- Pompe selon la revendication 6, dans laqueUe ladite lèvre annulaire (45) est flexible et coopère avec une surface tronconique en position de fermeture du clapet (40). 7.- Pump according to claim 6, in laqueUe said annular lip (45) is flexible and cooperates with a frustoconical surface in the closed position of the valve (40).
8.- Pompe selon la revendication 6 ou 7, dans laqueUe ladite lèvre annulaire (45) est réalisée par surmoulage. 8.- Pump according to claim 6 or 7, in laqueUe said annular lip (45) is produced by overmolding.
9.- Pompe selon l'une quelconque des revendications précédentes, dans laqueUe le siège de clapet (42) comporte une lèvre annulaire flexible (45) coopérant avec un élément de clapet tronconique (41), ledit élément de clapet (41) étant sensiblement rigide. 9.- Pump according to any one of the preceding claims, in laqueUe the valve seat (42) comprises a flexible annular lip (45) cooperating with a frustoconical valve element (41), said valve element (41) being substantially rigid.
10.- Pompe selon la revendication 9, dans laqueUe le siège de clapet (42) est réalisé en bi-matière, ladite lèvre annulaire (45) étant réalisée en un matériau plus mou que le restant du siège de clapet (42). 10.- Pump according to claim 9, in laqueUe the valve seat (42) is made of bi-material, said annular lip (45) being made of a softer material than the rest of the valve seat (42).
11.- Pompe selon la revendication 4 ou 5, dans laqueUe lesdits moyens d'étanchéité déformables comportent un joint annulaire deformable (46). 11.- Pump according to claim 4 or 5, in laqueUe said deformable sealing means comprise a deformable annular seal (46).
12.- Pompe selon la revendication 11, dans laqueUe ledit joint annulaire (46) coopère avec une surface tronconique en position de fermeture du clapet (40). 12.- Pump according to claim 11, in laqueUe said annular seal (46) cooperates with a frustoconical surface in the closed position of the valve (40).
13.- Pompe selon la revendication 11 ou 12, dans laqueUe ledit joint (46) est fixé par emmanchage, encliquetage ou surmoulage. 13.- Pump according to claim 11 or 12, in laqueUe said seal (46) is fixed by engagement, snap-fastening or overmolding.
14.- Pompe selon l'une quelconque des revendications précédentes, dans laqueUe l'élément de clapet (41) est sensiblement rigide et comporte un joint annulaire deformable (46) coopérant avec un siège de clapet tronconique (42), ledit siège de clapet (42) étant sensiblement rigide. 14.- Pump according to any one of the preceding claims, in laqueUe the valve element (41) is substantially rigid and comprises a deformable annular seal (46) cooperating with a frustoconical valve seat (42), said valve seat (42) being substantially rigid.
15.- Dispositif de distribution de produit fluide, caractérisé en ce qu'U comporte une pompe selon l'une quelconque des revendications précédentes. 15.- Fluid product distribution device, characterized in that U comprises a pump according to any one of the preceding claims.
PCT/FR2004/002233 2003-09-10 2004-09-02 Fluid product distributor pump WO2005028120A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2006525854A JP2007505256A (en) 2003-09-10 2004-09-02 Fluid dispenser pump
DE602004012586T DE602004012586T2 (en) 2003-09-10 2004-09-02 FLUID PRODUCT DISTRIBUTOR PUMP
EP04787288A EP1673176B1 (en) 2003-09-10 2004-09-02 Fluid product distributor pump
US10/571,056 US20070029347A1 (en) 2003-09-10 2004-09-02 Fluid product distributor device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0310653 2003-09-10
FR0310653A FR2859460B1 (en) 2003-09-10 2003-09-10 FLUID PRODUCT DELIVERY PUMP

Publications (1)

Publication Number Publication Date
WO2005028120A1 true WO2005028120A1 (en) 2005-03-31

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PCT/FR2004/002233 WO2005028120A1 (en) 2003-09-10 2004-09-02 Fluid product distributor pump

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US (1) US20070029347A1 (en)
EP (1) EP1673176B1 (en)
JP (1) JP2007505256A (en)
CN (1) CN1849177A (en)
DE (1) DE602004012586T2 (en)
FR (1) FR2859460B1 (en)
WO (1) WO2005028120A1 (en)

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FR2913731B1 (en) * 2007-03-12 2013-08-09 Valois Sas FLUID PRODUCT DELIVERY PUMP AND DISPENSER HAVING SUCH A PUMP
US20130299517A1 (en) * 2012-05-09 2013-11-14 Gojo Industries, Inc. Pull-activated foam pumps, dispensers and refill units
CN104555049B (en) * 2013-10-14 2017-04-12 株式会社衍宇 Feeder capable of absorbing contents again
US10967121B2 (en) * 2014-04-07 2021-04-06 Becton, Dickinson And Company Rotational metering pump for insulin patch

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US5110271A (en) * 1989-12-04 1992-05-05 Hofmann Joerg Hand-operable double-action metering and/or atomizing pump
US5176296A (en) * 1990-08-07 1993-01-05 Valois (Societe Anonyme) Precompression metering-proportioning pump enabling its efficiency to be improved by early admission into the pump working space
US6053364A (en) * 1995-10-06 2000-04-25 Airspray N.V. Device for dispensing an air-liquid mixture, in particular foam, and operating unit intended therefor
US5826756A (en) * 1996-03-08 1998-10-27 Continental Sprayers International, Inc. Water shield for pump dispenser
US5826756B1 (en) * 1996-03-08 2000-11-14 Continental Sprayers Int Inc Water shield for pump dispenser

Also Published As

Publication number Publication date
EP1673176A1 (en) 2006-06-28
DE602004012586D1 (en) 2008-04-30
JP2007505256A (en) 2007-03-08
DE602004012586T2 (en) 2009-04-02
FR2859460B1 (en) 2005-11-04
FR2859460A1 (en) 2005-03-11
CN1849177A (en) 2006-10-18
EP1673176B1 (en) 2008-03-19
US20070029347A1 (en) 2007-02-08

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