WO1995029015A1 - Device for regulating the volume of the chamber of a precompression pump - Google Patents

Device for regulating the volume of the chamber of a precompression pump Download PDF

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Publication number
WO1995029015A1
WO1995029015A1 PCT/FR1995/000455 FR9500455W WO9529015A1 WO 1995029015 A1 WO1995029015 A1 WO 1995029015A1 FR 9500455 W FR9500455 W FR 9500455W WO 9529015 A1 WO9529015 A1 WO 9529015A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
hoop
recess
piston
central opening
Prior art date
Application number
PCT/FR1995/000455
Other languages
French (fr)
Inventor
Jean-Pierre Lina
Claude Vincent
Original Assignee
Valois S.A.
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 S.A. filed Critical Valois S.A.
Priority to EP95916731A priority Critical patent/EP0756525B1/en
Priority to DE69503232T priority patent/DE69503232T2/en
Publication of WO1995029015A1 publication Critical patent/WO1995029015A1/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
    • B05B11/1005—Piston pumps with means for adjusting or modifying pump stroke
    • B05B11/1007—Piston pumps with means for adjusting or modifying pump stroke by adjusting or modifying the pump end-of-sucking-stroke position
    • 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
    • B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
    • B05B11/1025—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem a spring urging the outlet valve in its closed position
    • 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
    • B05B11/1043—Sealing or attachment arrangements between pump and container
    • B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
    • B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container

Definitions

  • the present invention relates to a device for dispensing fluid products comprising a precompression pump and more particularly a means and a method for adjusting the volume of the pump chamber of said dispensing device, thus making it possible to vary the quantity of product dispensed during an actuation of said device.
  • Many products for example in the field of pharmacy, cosmetics or perfumery, must be distributed in precise doses, different according to the user or the type of product. The quantity of product emitted at each dose must therefore be chosen for each application.
  • the quantity of product emitted at each dose is generally defined by the volume of the pump chamber.
  • Such a distributor is described for example in document FR-2 686 377 and is shown in FIG. 1. It comprises a precompression pump comprising a cylindrical pump body 1 in which slides an annular piston 3, the piston 3 is controlled by a push rod 10 which slides in said piston 3 and which comprises an outer sleeve 11, fixed on an inner core 12, and an outlet channel 13 opening into the pump body 1 through a lateral opening 5.
  • the piston cooperates with the push rod 10 for closing or clearing said lateral opening, the push rod being connected to the piston 3 by a precompression spring 8 which pushes the piston towards a rest position where it closes said lateral opening.
  • a pressure on the push rod 10 lowers the latter in the pump body which urges the piston 3 downwards due to the precompression spring 8.
  • an upper part 2 of the pump body 1 is fixedly fixed on the neck of the container by means of a hoop or capsule 20a, which can be crimped onto the upper part 2 of the pump body, and which has a central opening 21 through which a part passes upper 10 of the pump.
  • the object of the present invention is to provide a means and a method for adjusting the volume of the pump chamber 6 of such a product dispenser comprising a pump. precompression, said means must be easily achievable and adaptable to said product distributor without increasing manufacturing costs.
  • the present invention therefore relates to a method for adjusting the volume of a pump chamber of a pump fixed to the neck of a container by means of a hoop, said pump comprising a pump body and a piston sliding in said pump body between a rest position and an actuation position, the volume of the pump chamber being defined by the pump body and the rest position of the piston, said hoop having a central opening through which a portion passes upper part of said pump, said method being characterized by the step of forming in the hoop, near the central opening, at least one recess penetrating into the pump body, said recess being, with a lower part, in contact with a pump element determining the rest position of the piston, the latter being moved inside the pump body by a distance approximately equal to the depth of said at least one recess, so rte that the depth of said at least one depression regulates the volume of the pump chamber.
  • the invention therefore makes it possible to solve the aforementioned technical problem by only modifying a single part, the hoop, which is one of the last parts to be assembled on the assembly line.
  • the hoop which is one of the last parts to be assembled on the assembly line.
  • said hoop has a single depression in the pump body, said depression being annular and defining said central opening.
  • said hoop with its depression has a general external shape identical to the hoop without depression, these two hoops therefore being adapted to be mounted on the distribution device by the same assembly unit. It is thus possible, with a single assembly unit, to make distributors with chambers having different metering chamber volumes.
  • the invention also relates to a method for adjusting the volume of a pump chamber of a pump fixed on the neck of a container by means of a hoop, said pump comprising a pump body and a piston sliding in said pump body between a rest position and an actuation position, the volume of the pump chamber being defined by the pump body and the rest position of the piston, said hoop having a central opening through which a portion passes upper part of said pump, said method being characterized by the step of forming in the hoop, near the central opening, at least one recess penetrating into the pump body, said recess being, with a lower part, in contact with a pump element determining the rest position of the piston, the latter being displaced inside the pump body by a distance approximately equal to the depth of said at least one depression, so that the depth of said at least one depression regulates the volume of the pump chamber.
  • a single annular depression is formed in the hoop, said annular depression defining said central opening.
  • the step of forming at least one recess in the hoop is carried out by deformation of material near said central opening.
  • the step of forming at least one recess in the hoop is carried out in such a way that the fret with its at least one recess has a general external shape identical to the fret without sinking, these two frets being therefore adapted to be assembled by the same assembly unit.
  • FIG. 1 is a longitudinal sectional view of a product dispensing device comprising a precompression pump, according to the prior art and
  • FIG. 2 is a longitudinal sectional view of a device product distribution according to an embodiment of the present invention incorporating the means for adjusting the volume of the pump chamber.
  • the pump chamber 6 is delimited by the pump body 1 and the piston 3.
  • the quantity of product dispensed during actuation of the device is defined by the volume of said pump chamber 6, itself defined by the rest position of the piston 3.
  • the distributor according to the invention therefore provides for modifying the rest position of the piston 3 to adjust the volume of the pump chamber
  • the hoop 20b comprises near said central opening 21 at least one recess 30 in said pump body 1, said recess 30 being, with a lower part 31, in contact with an element of the pump determining the rest position of the piston 3.
  • said rest position is defined by the precompression spring 8 resting on one side on the piston 3 and on the other side on a shoulder l ia of the sleeve 11 of the push rod 10, said part of the sleeve resting on said hoop 20a, 20b possibly via a seal 17 , as shown in FIG. 2.
  • the depression 30 displaces the rest position of the piston 3 inside the pump body 1 by a distance approximately equal to the depth of said depression. Consequently, the volume of the pump chamber is modified in proportion to the depth of the depression 30.
  • said hoop 20b comprises a single annular depression 30, said annular depression 30 defining the central opening 21.
  • the method of manufacturing the hoop 20b according to the invention is therefore very easily achievable, for example by simple deformation of material at the level of the central opening 21, and therefore does not require a complicated and expensive manufacturing machine.
  • This implementation of the recess 30 makes it possible to have the seal of seal 17 directly under said recess 30 and avoids having to insert an additional flat part.
  • the general shape of the hoops 20a, 20b is not modified. These can therefore be mounted on the distribution device by the same assembly unit independently of the presence of a depression 30.
  • the main advantage of the invention is therefore to allow the manufacture of product distributors with metering chambers having different volumes, on the same assembly line, by modifying only one piece, namely the hoop, which plus is one of the last to be assembled. All other components making up the product dispenser are unchanged.
  • the recesses can be of variable depth, therefore defining several different pump chamber volumes.

Abstract

Fluid product dispensing device comprising a container provided with a neck, and a pump comprising a pump chamber (6) which is delimited by a pump body (1) and a piston (3) sliding within said pump body (1) between a rest position and an actuation position, said pump body (1) comprising a top part (2) secured to the container neck by means of a hoop (20a, 20b), said hoop having a central opening (21) through which passes the top portion (10) of said pump, characterized in that the hoop (20b) comprises at least a recess (30) in the pump body (1) at the vicinity of the central opening (21), said recess (30), together with a lower portion (31), being in contact with a pump element determining the rest position of the piston (3), so as to regulate the volume of said pump chamber (6).

Description

Dispositif de réglage du volume d'une chambre de pompe d'une pompe à précompression Device for adjusting the volume of a pump chamber of a precompression pump
La présente invention concerne un dispositif de distribution de produits fluides comportant une pompe à précompression et plus particulièrement un moyen et un procédé de réglage du volume de la chambre de pompe dudit dispositif de distπbution, permettant ainsi de varier la quantité de produit distribué lors d'un actionnement dudit dispositif. De nombreux produits, par exemple dans le domaine de la pharmacie, de la cosmétique ou de la parfumerie, doivent être distribués à des doses précises, différentes selon l'utilisateur ou le type de produit. La quantité de produit émis à chaque dose doit donc être choisie pour chaque application. Dans le cas des distributeurs de produits comportant une pompe à précompression, la quantité de produit émis à chaque dose est généralement définie par le volume de la chambre de pompe.The present invention relates to a device for dispensing fluid products comprising a precompression pump and more particularly a means and a method for adjusting the volume of the pump chamber of said dispensing device, thus making it possible to vary the quantity of product dispensed during an actuation of said device. Many products, for example in the field of pharmacy, cosmetics or perfumery, must be distributed in precise doses, different according to the user or the type of product. The quantity of product emitted at each dose must therefore be chosen for each application. In the case of dispensers of products comprising a precompression pump, the quantity of product emitted at each dose is generally defined by the volume of the pump chamber.
Un tel distributeur est décrit par exemple dans le document FR-2 686 377 et est représenté sur la figure 1. Il comporte une pompe à précompression comprenant un corps de pompe cylindrique 1 dans lequel coulisse un piston annulaire 3, le piston 3 est commandé par une tige-poussoir 10 qui coulisse dans ledit piston 3 et qui comporte un manchon extérieur 11, fixé sur un noyau intérieur 12, et un canal de sortie 13 débouchant dans le corps de pompe 1 par une ouverture latérale 5. Le piston coopère avec la tige- poussoir 10 pour obturer ou dégager ladite ouverture latérale, la tige-poussoir étant connectée au piston 3 par un ressort de précompression 8 qui repousse le piston vers une position de repos où il obture ladite ouverture latérale. Une pression sur la tige-poussoir 10 fait descendre celle-ci dans le corps de pompe ce qui sollicite le piston 3 vers le bas du fait du ressort de précompression 8. Il se crée donc une surpression dans la chambre de pompe 6 jusqu'à ce que cette surpression soit suffisante pour contre-balancer la force du ressort de précompression 8 et ainsi dégager l'ouverture latérale 5 pour permettre l'expulsion du produit contenu dans la chambre de pompe 6. Comme représenté sur la figure 1, une partie supérieure 2 du corps de pompe 1 est assujettie fixement sur le col du récipient au moyen d'une frette ou capsule 20a, pouvant être sertie sur la partie supérieure 2 du corps de pompe, et qui comporte une ouverture centrale 21 à travers laquelle passe une partie supérieure 10 de la pompe.Such a distributor is described for example in document FR-2 686 377 and is shown in FIG. 1. It comprises a precompression pump comprising a cylindrical pump body 1 in which slides an annular piston 3, the piston 3 is controlled by a push rod 10 which slides in said piston 3 and which comprises an outer sleeve 11, fixed on an inner core 12, and an outlet channel 13 opening into the pump body 1 through a lateral opening 5. The piston cooperates with the push rod 10 for closing or clearing said lateral opening, the push rod being connected to the piston 3 by a precompression spring 8 which pushes the piston towards a rest position where it closes said lateral opening. A pressure on the push rod 10 lowers the latter in the pump body which urges the piston 3 downwards due to the precompression spring 8. There is therefore created an overpressure in the pump chamber 6 until that this overpressure is sufficient to counterbalance the force of the precompression spring 8 and thus release the lateral opening 5 to allow the expulsion of the product contained in the pump chamber 6. As shown in FIG. 1, an upper part 2 of the pump body 1 is fixedly fixed on the neck of the container by means of a hoop or capsule 20a, which can be crimped onto the upper part 2 of the pump body, and which has a central opening 21 through which a part passes upper 10 of the pump.
La présente invention a pour but de fournir un moyen et un procédé de réglage du volume de la chambre de pompe 6 d'un tel distributeur de produit comportant une pompe à précompression, ledit moyen devant être facilement réalisable et adaptable audit distributeur de produit sans en augmenter les coûts de fabrication.The object of the present invention is to provide a means and a method for adjusting the volume of the pump chamber 6 of such a product dispenser comprising a pump. precompression, said means must be easily achievable and adaptable to said product distributor without increasing manufacturing costs.
La présente invention a donc pour objet un procédé pour régler le volume d'une chambre de pompe d'une pompe fixée sur le col d'un récipient au moyen d'une frette, ladite pompe comportant un corps de pompe et un piston coulissant dans ledit corps de pompe entre une position de repos et une position d'actionnement, le volume de la chambre de pompe étant défini par le corps de pompe et la position de repos du piston, ladite frette comportant une ouverture centrale à travers laquelle passe une partie supérieure de ladite pompe, ledit procédé étant caractérisé par l'étape de former dans la frette, à proximité de l'ouverture centrale, au moins un enfoncement pénétrant dans le corps de pompe, ledit enfoncement étant, avec une partie inférieure, en contact avec un élément de la pompe déterminant la position de repos du piston, celle-ci étant déplacée à l'intérieur du corps de pompe d'une distance environ égale à la profondeur dudit au moins un enfoncement, de sorte que la profondeur dudit au moins un enfoncement règle le volume de la chambre de pompe.The present invention therefore relates to a method for adjusting the volume of a pump chamber of a pump fixed to the neck of a container by means of a hoop, said pump comprising a pump body and a piston sliding in said pump body between a rest position and an actuation position, the volume of the pump chamber being defined by the pump body and the rest position of the piston, said hoop having a central opening through which a portion passes upper part of said pump, said method being characterized by the step of forming in the hoop, near the central opening, at least one recess penetrating into the pump body, said recess being, with a lower part, in contact with a pump element determining the rest position of the piston, the latter being moved inside the pump body by a distance approximately equal to the depth of said at least one recess, so rte that the depth of said at least one depression regulates the volume of the pump chamber.
L'invention permet donc de résoudre le problème technique précité en ne modifiant qu'une seule pièce, la frette, qui est une des dernières pièces à être assemblées sur la chaîne de montage. Ainsi, il n'est pas nécessaire pour régler le volume de la chambre de pompe de modifier une ou plusieurs pièces constitutives de la pompe elle-même, de rajouter une pièce supplémentaire, ou de modifier la chaîne de montage, ce qui entraînerait une hausse considérable du coût de fabrication.The invention therefore makes it possible to solve the aforementioned technical problem by only modifying a single part, the hoop, which is one of the last parts to be assembled on the assembly line. Thus, it is not necessary to adjust the volume of the pump chamber to modify one or more component parts of the pump itself, to add an additional part, or to modify the assembly line, which would cause an increase considerable manufacturing cost.
Avantageusement, ladite frette comporte un seul enfoncement dans le corps de pompe, ledit enfoncement étant annulaire et définissant ladite ouverture centrale.Advantageously, said hoop has a single depression in the pump body, said depression being annular and defining said central opening.
De préférence, ladite frette avec son enfoncement a une forme extérieure générale identique à la frette sans enfoncement, ces deux frettes étant par conséquent adaptées à être montées sur le dispositif de distribution par la même unité d'assemblage. Il est ainsi possible, avec une seule unité d'assemblage, de réaliser des distributeurs avec des chambres ayant des volumes de chambre de dosage différents.Preferably, said hoop with its depression has a general external shape identical to the hoop without depression, these two hoops therefore being adapted to be mounted on the distribution device by the same assembly unit. It is thus possible, with a single assembly unit, to make distributors with chambers having different metering chamber volumes.
L'invention a également pour objet un procédé pour régler le volume d'une chambre de pompe d'une pompe fixée sur le col d'un récipient au moyen d'une frette, ladite pompe comportant un corps de pompe et un piston coulissant dans ledit corps de pompe entre une position de repos et une position d'actionnement, le volume de la chambre de pompe étant défini par le corps de pompe et la position de repos du piston, ladite frette comportant une ouverture centrale à travers laquelle passe une partie supérieure de ladite pompe, ledit procédé étant caractérisé par l'étape de former dans la frette, à proximité de l'ouverture centrale, au moins un enfoncement pénétrant dans le corps de pompe, ledit enfoncement étant, avec une partie inférieure, en contact avec un élément de la pompe déterminant la position de repos du piston, celle-ci étant déplacée à l'intérieur du corps de pompe d'une distance environ égale à la profondeur dudit au moins un enfoncement, de sorte que la profondeur dudit au moins un enfoncement règle le volume de la chambre de pompe.The invention also relates to a method for adjusting the volume of a pump chamber of a pump fixed on the neck of a container by means of a hoop, said pump comprising a pump body and a piston sliding in said pump body between a rest position and an actuation position, the volume of the pump chamber being defined by the pump body and the rest position of the piston, said hoop having a central opening through which a portion passes upper part of said pump, said method being characterized by the step of forming in the hoop, near the central opening, at least one recess penetrating into the pump body, said recess being, with a lower part, in contact with a pump element determining the rest position of the piston, the latter being displaced inside the pump body by a distance approximately equal to the depth of said at least one depression, so that the depth of said at least one depression regulates the volume of the pump chamber.
Avantageusement, un seul enfoncement annulaire est formé dans la frette, ledit enfoncement annulaire définissant ladite ouverture centrale.Advantageously, a single annular depression is formed in the hoop, said annular depression defining said central opening.
De préférence, l'étape de former au moins un enfoncement dans la frette est réalisée par déformation de matière à proximité de ladite ouverture centrale. De préférence, l'étape de former au moins un enfoncement dans la frette est réalisé de telle sorte, que la frette avec son au moins un enfoncement a une forme extérieure générale identique à la frette sans enfoncement, ces deux frettes étant par conséquent adaptées à être montées par la même unité d'assemblage.Preferably, the step of forming at least one recess in the hoop is carried out by deformation of material near said central opening. Preferably, the step of forming at least one recess in the hoop is carried out in such a way that the fret with its at least one recess has a general external shape identical to the fret without sinking, these two frets being therefore adapted to be assembled by the same assembly unit.
D'autres caractéristiques et avantages de la présente invention apparaîtront au cours de la description suivante d'un mode de réalisation de l'invention, donnée à titre d'exemple non limitatif en regard des dessins joints. Sur les dessins : - la figure 1 est une vue en coupe longitudinale d'un dispositif de distribution de produit comportant une pompe à précompression, selon l'art antérieur et, - la figure 2 est une vue en coupe longitudinale d'un dispositif de distribution de produit selon un mode de réalisation de la présente invention incorporant le moyen de réglage du volume de la chambre de pompe.Other characteristics and advantages of the present invention will appear during the following description of an embodiment of the invention, given by way of nonlimiting example with reference to the accompanying drawings. In the drawings: - Figure 1 is a longitudinal sectional view of a product dispensing device comprising a precompression pump, according to the prior art and, - Figure 2 is a longitudinal sectional view of a device product distribution according to an embodiment of the present invention incorporating the means for adjusting the volume of the pump chamber.
Comme décrit précédemment pour le distributeur de produits de l'art antérieur, en regard de la figure 1, la chambre de pompe 6 est délimitée par le corps de pompe 1 et le piston 3. La quantité de produit distribué lors de l'actionnement du dispositif est définie par le volume de ladite chambre de pompe 6, lui-même défini par la position de repos du piston 3.As described above for the dispenser of products of the prior art, with reference to FIG. 1, the pump chamber 6 is delimited by the pump body 1 and the piston 3. The quantity of product dispensed during actuation of the device is defined by the volume of said pump chamber 6, itself defined by the rest position of the piston 3.
Le distributeur selon l'invention, représenté sur la figure 2, prévoit donc de modifier la position de repos du piston 3 pour régler le volume de la chambre de pompeThe distributor according to the invention, shown in Figure 2, therefore provides for modifying the rest position of the piston 3 to adjust the volume of the pump chamber
6. Tous les éléments constitutifs du distributeur selon l'invention sont identiques à ceux du distributeur de l'art antérieur décrit précédemment, et ne seront donc pas décrit à nouveau en détail, sauf la frette 20b permettant de fixer le corps de pompe 1 sur le col du récipient. Ainsi, selon l'invention, la frette 20b comporte à proximité de ladite ouverture centrale 21 au moins un enfoncement 30 dans ledit corps de pompe 1, ledit enfoncement 30 étant, avec une partie inférieure 31, en contact avec un élément de la pompe déterminant la position de repos du piston 3. En effet, ladite position de repos est définie par le ressort de précompression 8 s'appuyant d'un côté sur le piston 3 et de l'autre côté sur un épaulement l ia du manchon 11 de la tige-poussoir 10, ladite partie du manchon s'appuyant elle sur ladite frette 20a, 20b éventuellement par l'intermédiaire d'un joint d'étanchéité 17, comme représenté sur la figure 2. Ainsi, l'enfoncement 30 déplace la position de repos du piston 3 à l'intérieur du corps de pompe 1 d'une distance environ égale à la profondeur dudit enfoncement. Par conséquent, le volume de la chambre de pompe est modifié proportionnellement à la profondeur de l'enfoncement 30. Avantageusement, ladite frette 20b comporte un seul enfoncement 30 annulaire, ledit enfoncement annulaire 30 définissant l'ouverture centrale 21. Le procédé de fabrication de la frette 20b selon l'invention est donc très facilement réalisable, par exemple par simple déformation de matière au niveau de l'ouverture centrale 21, et ne nécessite donc pas de machine de fabrication compliquée et coûteuse. De manière avantageuse, on prévoit de former ladite partie inférieure 31 de l'enfoncement 30 sous la forme d'une bride horizontale comportant en son centre ladite ouverture centrale 21. Cette mise en oeuvre de l'enfoncement 30 permet de disposer le joint d'étanchéité 17 directement sous ledit enfoncement 30 et évite d'avoir à intercaler une pièce plate supplémentaire. De préférence, hormis ledit enfoncement 30 à proximité de l'ouverture centrale 21, la forme générale des frettes 20a, 20b n'est pas modifiée. Celles-ci peuvent donc être montées sur le dispositif de distribution par la même unité d'assemblage indépendamment de la présence d'un enfoncement 30.6. All of the components of the distributor according to the invention are identical to those of the distributor of the prior art described above, and will therefore not be described again in detail, except the hoop 20b making it possible to fix the pump body 1 on the neck of the container. Thus, according to the invention, the hoop 20b comprises near said central opening 21 at least one recess 30 in said pump body 1, said recess 30 being, with a lower part 31, in contact with an element of the pump determining the rest position of the piston 3. In fact, said rest position is defined by the precompression spring 8 resting on one side on the piston 3 and on the other side on a shoulder l ia of the sleeve 11 of the push rod 10, said part of the sleeve resting on said hoop 20a, 20b possibly via a seal 17 , as shown in FIG. 2. Thus, the depression 30 displaces the rest position of the piston 3 inside the pump body 1 by a distance approximately equal to the depth of said depression. Consequently, the volume of the pump chamber is modified in proportion to the depth of the depression 30. Advantageously, said hoop 20b comprises a single annular depression 30, said annular depression 30 defining the central opening 21. The method of manufacturing the hoop 20b according to the invention is therefore very easily achievable, for example by simple deformation of material at the level of the central opening 21, and therefore does not require a complicated and expensive manufacturing machine. Advantageously, provision is made to form said lower part 31 of the recess 30 in the form of a horizontal flange having at its center said central opening 21. This implementation of the recess 30 makes it possible to have the seal of seal 17 directly under said recess 30 and avoids having to insert an additional flat part. Preferably, apart from said depression 30 near the central opening 21, the general shape of the hoops 20a, 20b is not modified. These can therefore be mounted on the distribution device by the same assembly unit independently of the presence of a depression 30.
L'avantage principal de l'invention est donc de permettre la fabrication de distributeurs de produits avec des chambres de dosage ayant des volumes différents, sur une même chaîne de montage, en ne modifiant qu'une seule pièce, à savoir la frette, qui plus est, est une des dernières à être assemblée. Tous les autres composants formant le distributeur de produit sont inchangés.The main advantage of the invention is therefore to allow the manufacture of product distributors with metering chambers having different volumes, on the same assembly line, by modifying only one piece, namely the hoop, which plus is one of the last to be assembled. All other components making up the product dispenser are unchanged.
On obtient ainsi un faible coût de production et une grande flexibilité, les enfoncements pouvant être de profondeur variable, définissant par conséquent plusieurs volumes de chambre de pompe différents. This produces a low production cost and great flexibility, the recesses can be of variable depth, therefore defining several different pump chamber volumes.

Claims

Revendications : Claims:
1.- Dispositif de distribution de produit fluide comportant un récipient muni d'un col et une pompe fixée sur ledit col au moyen d'une frette (20a, 20b) ladite pompe comportant une chambre de pompe (6) délimitée par un corps de pompe (1) et un piston (3) coulissant dans ledit corps de pompe (1) entre une position de repos et une position d'actionnement, le volume de la chambre de pompe (6) étant défini par le corps de pompe (1) et la position de repos du piston (3), ladite frette (20a, 20b) comportant une ouverture centrale (21 ) à travers laquelle passe une partie supérieure (10) de ladite pompe, caractérisé en ce que ladite frette (20b) comporte, à proximité de son ouverture centrale (21), au moins un enfoncement (30) pénétrant dans le corps de pompe (1), ledit au moins un enfoncement (30) étant avec une partie inférieure (31), en contact avec un élément de la pompe déterminant la position de repos du piston (3), celle-ci étant déplacée à l'intérieur du corps de pompe (1) d'une distance environ égale à la profondeur dudit au moins un enfoncement (30), de sorte que la profondeur dudit enfoncement règle le volume de la chambre de pompe (6).1.- Device for dispensing a fluid product comprising a container provided with a neck and a pump fixed to said neck by means of a hoop (20a, 20b) said pump comprising a pump chamber (6) delimited by a body of pump (1) and a piston (3) sliding in said pump body (1) between a rest position and an actuation position, the volume of the pump chamber (6) being defined by the pump body (1 ) and the rest position of the piston (3), said hoop (20a, 20b) comprising a central opening (21) through which an upper part (10) of said pump passes, characterized in that said hoop (20b) comprises , near its central opening (21), at least one recess (30) penetrating into the pump body (1), said at least one recess (30) being with a lower part (31), in contact with an element of the pump determining the rest position of the piston (3), this being moved inside the body pump (1) by a distance approximately equal to the depth of said at least one recess (30), so that the depth of said recess controls the volume of the pump chamber (6).
2.- Dispositif selon la revendication 1, dans lequel ladite frette (20b) comporte un seul enfoncement (30) annulaire, ledit enfoncement annulaire définissant ladite ouverture centrale (21).2.- Device according to claim 1, wherein said hoop (20b) comprises a single annular depression (30), said annular depression defining said central opening (21).
3.- Dispositif selon la revendication 1 ou la revendication 2, dans lequel ladite frette3.- Device according to claim 1 or claim 2, wherein said hoop
(20b) avec son enfoncement (30) a une forme extérieure générale identique à la frette (20a) sans enfoncement, ces deux frettes (20a, 20b) étant par conséquent adaptées à être montées par la même unité d'assemblage.(20b) with its depression (30) has a general external shape identical to the hoop (20a) without depression, these two frets (20a, 20b) being therefore adapted to be mounted by the same assembly unit.
4.- Procédé pour régler le volume d'une chambre de pompe (6) d'une pompe fixée sur le col d'un récipient au moyen d'une frette (20a, 20b), ladite pompe comportant un corps de pompe (1 ) et un piston (3) coulissant dans ledit corps de pompe (1) entre une position de repos et une position d'actionnement, le volume de la chambre de pompe (6) étant défini par le corps de pompe (1) et la position de repos du piston (3), ladite frette (20a, 20b) comportant une ouverture centrale (21) à travers laquelle passe une partie supérieure (10) de ladite pompe, ledit procédé étant caractérisé par l'étape de former dans la frette (20b), à proximité de l'ouverture centrale (21), au moins un enfoncement (30) pénétrant dans le corps de pompe (1), ledit enfoncement (30) étant, avec une partie inférieure (31), en contact avec un élément de la pompe déterminant la position de repos du piston (3), celle-ci étant déplacée à l'intérieur du coφs de pompe (1) d'une distance environ égale à la profondeur dudit au moins un enfoncement (30), de sorte que la profondeur dudit au moins un enfoncement (30) règle le volume de la chambre de pompe (6).4.- Method for adjusting the volume of a pump chamber (6) of a pump fixed on the neck of a container by means of a hoop (20a, 20b), said pump comprising a pump body (1 ) and a piston (3) sliding in said pump body (1) between a rest position and an actuation position, the volume of the pump chamber (6) being defined by the pump body (1) and the rest position of the piston (3), said hoop (20a, 20b) having a central opening (21) through which an upper part (10) of said pump passes, said method being characterized by the step of forming in the hoop (20b), near the central opening (21), at least one recess (30) penetrating into the pump body (1), said recess (30) being, with a lower part (31), in contact with a pump element determining the rest position piston (3), the latter being displaced inside the pump case (1) by a distance approximately equal to the depth of said at least one recess (30), so that the depth of said at least one recess (30) adjusts the volume of the pump chamber (6).
5.- Procédé selon la revendication 4, dans lequel un seul enfoncement (30) annulaire est formé dans la frette (20b), ledit enfoncement annulaire définissant ladite ouverture centrale (21).5. A method according to claim 4, wherein a single annular depression (30) is formed in the hoop (20b), said annular depression defining said central opening (21).
6.- Procédé selon la revendication 4 ou la revendication 5, dans lequel l'étape de former au moins un enfoncement (30) dans la frette (20b) est réalisée par déformation de matière à proximité de ladite ouverture centrale (21).6. A method according to claim 4 or claim 5, wherein the step of forming at least one recess (30) in the hoop (20b) is performed by deformation of material near said central opening (21).
7.- Procédé selon l'une quelconque des revendications 4 à 6, dans lequel l'étape de former au moins un enfoncement (30) dans la frette (20b) est réalisé de telle sorte, que la frette (20b) avec son au moins un enfoncement (30) a une forme extérieure générale identique à la frette (20a) sans enfoncement, ces deux frettes (20a, 20b) étant par conséquent adaptées à être montées par la même unité d'assemblage. 7.- Method according to any one of claims 4 to 6, wherein the step of forming at least one recess (30) in the hoop (20b) is carried out so that the hoop (20b) with sound at at least one recess (30) has a general external shape identical to the hoop (20a) without sinking, these two frets (20a, 20b) being therefore adapted to be mounted by the same assembly unit.
PCT/FR1995/000455 1994-04-22 1995-04-10 Device for regulating the volume of the chamber of a precompression pump WO1995029015A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP95916731A EP0756525B1 (en) 1994-04-22 1995-04-10 Device for regulating the volume of the chamber of a precompression pump
DE69503232T DE69503232T2 (en) 1994-04-22 1995-04-10 DEVICE FOR ADJUSTING THE PRESSURE CHAMBER VOLUME OF A PRESSURE PUMP

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9404858A FR2719084B1 (en) 1994-04-22 1994-04-22 Device for adjusting the volume of a pump chamber of a precompression pump.
FR94/04858 1994-04-22

Publications (1)

Publication Number Publication Date
WO1995029015A1 true WO1995029015A1 (en) 1995-11-02

Family

ID=9462413

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR1995/000455 WO1995029015A1 (en) 1994-04-22 1995-04-10 Device for regulating the volume of the chamber of a precompression pump

Country Status (5)

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EP (1) EP0756525B1 (en)
DE (1) DE69503232T2 (en)
ES (1) ES2120198T3 (en)
FR (1) FR2719084B1 (en)
WO (1) WO1995029015A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3028571B1 (en) 2014-11-14 2019-09-13 Aptar France Sas MANUAL PUMP
FR3033844B1 (en) 2015-03-20 2018-08-10 Aptar France Sas MANUAL PUMP.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1101114A (en) * 1953-05-22 1955-09-28 Kopa Kolner Parfuemerie Apothe Adjustable quantity liquid dispenser
GB2165009A (en) * 1984-08-31 1986-04-03 Semar Packaging Systems Limite Improvements in and relating to pumps
EP0343414A2 (en) * 1988-05-24 1989-11-29 S.A.R. S.P.A. Seal device for hand pumps dispensing paste or liquid products
FR2686377A1 (en) * 1992-01-20 1993-07-23 Valois IMPROVED PRECOMPRESSION PUMP.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1101114A (en) * 1953-05-22 1955-09-28 Kopa Kolner Parfuemerie Apothe Adjustable quantity liquid dispenser
GB2165009A (en) * 1984-08-31 1986-04-03 Semar Packaging Systems Limite Improvements in and relating to pumps
EP0343414A2 (en) * 1988-05-24 1989-11-29 S.A.R. S.P.A. Seal device for hand pumps dispensing paste or liquid products
FR2686377A1 (en) * 1992-01-20 1993-07-23 Valois IMPROVED PRECOMPRESSION PUMP.

Also Published As

Publication number Publication date
ES2120198T3 (en) 1998-10-16
FR2719084A1 (en) 1995-10-27
DE69503232T2 (en) 1999-04-08
EP0756525A1 (en) 1997-02-05
FR2719084B1 (en) 1996-07-12
EP0756525B1 (en) 1998-07-01
DE69503232D1 (en) 1998-08-06

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