EP3898003B1 - Vorrichtung zur ausgabe eines fluidprodukts - Google Patents

Vorrichtung zur ausgabe eines fluidprodukts Download PDF

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Publication number
EP3898003B1
EP3898003B1 EP19842815.3A EP19842815A EP3898003B1 EP 3898003 B1 EP3898003 B1 EP 3898003B1 EP 19842815 A EP19842815 A EP 19842815A EP 3898003 B1 EP3898003 B1 EP 3898003B1
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EP
European Patent Office
Prior art keywords
axial
pump
rod
piston
pump body
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.)
Active
Application number
EP19842815.3A
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English (en)
French (fr)
Other versions
EP3898003A1 (de
Inventor
Dominique Brunet
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
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Aptar France SAS
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Publication date
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Publication of EP3898003A1 publication Critical patent/EP3898003A1/de
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Publication of EP3898003B1 publication Critical patent/EP3898003B1/de
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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
    • B05B11/1023—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
    • B05B11/1066—Pump inlet valves
    • B05B11/1067—Pump inlet valves actuated by pressure
    • B05B11/1069—Pump inlet valves actuated by pressure the valve being made of a resiliently deformable material or being urged in a closed position by a spring
    • 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
    • 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 fluid dispenser pump.
  • the documents FR2343137 And FR2403465 describe a device comprising a pump comprising a pump body in which a piston can move, slidably mounted on an actuating rod, the thrust force exerted on the rod by the user being transmitted to the piston by means of a spring, so that by actuating the actuating rod, there is a relative movement of the piston with respect to the rod.
  • this pump has certain drawbacks.
  • the dose dispersion between successive doses is relatively large.
  • the operation of the pump can be negatively impacted.
  • the object of the present invention is to provide a fluid dispenser pump which does not reproduce the aforementioned drawbacks.
  • the present invention also aims to provide a fluid dispenser pump which improves dose reproducibility between successive doses.
  • Another object of the present invention is to provide a fluid dispenser pump which improves operating reliability, in particular in the case of non-axial actuation.
  • the present invention also aims to provide a fluid dispenser pump that is simple and inexpensive to manufacture and assemble.
  • said axial sleeve comprises at least two axial ribs.
  • four axial ribs extend two by two in a diametrically opposite manner around an axial opening of said valve holder.
  • a passage hole is formed in said axial sleeve to ensure the passage of the liquid in the actuating position.
  • a fixing ring is provided to fix said pump body to a container with the interposition of a neck gasket, a ring gasket being provided to seal said fixing ring with said pump body.
  • an upper axial edge of said piston cooperates in leaktight manner with said ring seal.
  • a vent is provided in said pump body to allow the replacement by air of the product expelled by the pump on each actuation.
  • the present invention also relates to a fluid dispenser device comprising a pump as described above.
  • the pump comprises a pump body 14.
  • a fixing ring 10 is provided to fix the pump body 14 on the neck of a container (not shown) with the interposition of a neck gasket 11.
  • a ring gasket 13 seals the fixing ring 10 with the pump body 14.
  • a piston 16 slides in leaktight manner in the pump body 14, around a hollow rod 15, with an internal axial channel 15a.
  • a radially outer edge of piston 16 forms an outer sealing lip 16a, to seal against the inner surface of pump body 14.
  • An upper axial edge 16b of piston 16 seals against ring seal 13 when at rest.
  • the internal axial channel 15a opens axially towards the top of the rod 15. Towards the bottom, the channel 15a is axially closed and communicates with the outside of the rod via a radial orifice 15b.
  • the pump body 14 is closed at the bottom by an inlet valve 20, held in place by a valve holder 21.
  • This inlet valve closes an opening 29, communicating with the interior of the container, and on which one can connect a dip tube 29a, in the well-known conventional manner.
  • the rod 15 has a shoulder 23, against which bears an actuating spring 24 applied on the other side against the piston 16.
  • This actuating spring 24 serves to transmit the pressure force from the rod 15 to the piston 16
  • the shoulder 23 also serves to limit the upward movement of the rod 15, forming an abutment with the ring seal 13.
  • a return spring 25 urges the piston 16 upwards, and, with it, the rod 15 via the actuation spring 24.
  • the seal between the piston 16 and the rod 15 is provided by an internal part of the piston 16, preferably of conical shape, forming an internal sealing lip 31. To improve the seal, it is still possible, if necessary in certain cases (for example, very fluid product or high pressure required) provide an extension 16c of the piston towards the top of the rod 15.
  • the pump comprises a support piece or rammer 32, better visible on the figure 5 , and comprising upwards an oblique or frustoconical surface 32a of suitable inclination with respect to that of the internal sealing lip 31 of the piston 16.
  • the lower surface 32b of the gland 32 serves as a stop against the valve holder 21, to limit the travel of the piston 16 downwards.
  • the force exerted by the return spring 25 must be greater than that which is exerted by the actuating spring 24, so that the upper edge 16b of the piston 16 is properly applied to the ring seal 13.
  • the force exerted by the actuating spring 24 increases rapidly and substantially exceeds the force exerted by the return spring 25 so that the difference in the thrusts exerted by the springs 24, 25 corresponds to the desired pressure in the lower part of the pump casing 14.
  • a vent 35 is provided in the pump body 14 to allow the replacement by air of the product expelled by the pump on each actuation.
  • the pump described above works as follows. At rest, sealing inside the container is ensured by the neck gasket 11 between the ring 10 and the container (not shown), by the ring gasket 13 between the ring 10 and the pump body 14, by the contact between the upper edge 16b of the piston 16 and the ring seal 13, and by the internal sealing lip 31 of the piston 16 against the rod 15.
  • the container not shown in the drawings, and which can be arbitrary, is filled with a liquid, in particular pharmaceutical, to be dispensed, in particular to be sprayed.
  • the fixing ring 10 can be made of metal or plastic. It can be crimped, screwed, snapped or otherwise attached to the container.
  • the user must first prime the pump by running it to expel air until the lower part of the pump body 14 is filled with liquid.
  • the liquid is rapidly expelled through the orifice 15b and the channel 15a, towards a dispensing head (not shown) assembled on the pump, and the pressure is kept constant during this operation, by the actuating spring 24, which exerts the desired pressure as the orifice 15b is open.
  • the piston 16 actuated by the actuating spring 24 closes off the orifice 15b.
  • the gland 32 makes it possible to obtain an excellent seal with an internal sealing lip 31 made in the mass of the piston 16, that is to say in an inexpensive material, which does not require high precision of the characteristics over time and temperature.
  • the choice of the size of the rammer 32, in particular its axial length, makes it possible to adjust the stroke of the piston 16, that is to say the volume of the dose dispensed at each actuation. It is therefore possible, with a single model of pump, to obtain very different doses by an appropriate choice of the length of the rammer.
  • a disadvantage of the prior art pump shown in the figures 1 and 2 relates to dose dispersion.
  • the volume of the dose is defined by the volume displaced by the piston 16 and ram 32 subassembly on the one hand, and by the volume displaced by the rod 15 on the other hand.
  • the actuation limit stop of the rod is produced by the actuation spring 24 which is completely compressed, with the contiguous turns. It is therefore a deformable component, because even with contiguous turns, the actuating spring 24 remains relatively flexible. The end of dose is therefore dependent on a deformable component, and on variations according to the user's actuation force and/or the precision of the spring.
  • a non-axial actuating force exerted on the rod 15 therefore passes through the actuating spring 24 with contiguous turns and through the cone-on-cone contact between the internal sealing lip 31 of the piston 16 and the oblique surface 32a of the gland 32 , these flexible elements being liable to deform, which generates a malfunction of the pump in the actuation position, also called tilting, liable to generate an undesired modification of the volume of the dose dispensed.
  • a mechanical stop of the pump is provided between the lower axial end 15c of the rod 15 and the valve holder 21, to define the end of actuation stroke of the rod 15.
  • said valve holder 21 comprises at least one axial rib 21a formed in an axial sleeve 21c receiving the rod 15 in the actuating position.
  • a passage hole 21b is formed in said axial sleeve 21c, as visible on the figure 6 .
  • axial ribs 21a are provided, as seen on the figure 6 .
  • These axial ribs 21a can extend two by two in a diametrically opposite manner around an axial opening 21d of said valve holder 21.
  • This stop formed by the contact, in the actuation position, between the ribs 21a of the valve holder 21 and the lower axial end of the rod 15, ensures a transmission of the actuation force directly from the rod 15 to the body pump 14, via the valve holder 21, without risk of deformation of the flexible elements of the pump defining the dose volume.
  • the reproducibility of the dose is therefore improved and the risk of tilting reduced.
  • the present invention generates a slightly lower average dose in volume, but that the standard deviation, that is to say the dose dispersion, is greatly reduced with the present invention. In this case, this dose dispersion is reduced by 48%, which demonstrates the effectiveness of the present invention, with the reproducibility of the dose between successive actuations being greatly improved.

Landscapes

  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Closures For Containers (AREA)

Claims (8)

  1. Pumpe zur Ausgabe eines Fluidprodukts, aufweisend:
    - einen Pumpenkörper (14), der eine Öffnung (29) aufweist, die von einem Eintrittsventil (20) verschlossen ist, das von einem Ventilträger (21) gehalten wird, der im Pumpenkörper (14) befestigt ist,
    - einen Kolben (16), der im Pumpenkörper (14) dicht um einen hohlen Schaft (15) gleitet, der mit einem axialen Innenkanal (15a) versehen ist, der auf der unteren Seite des Schafts (15) axial verschlossen ist und durch eine radiale Öffnung (15b) mit dem Äußeren des Schafts (15) in Verbindung steht, wobei der Kolben (16) an einem radial äußeren Rand eine äußere Dichtlippe (16a) zur Gewährleistung der Dichtheit zum Pumpenkörper (14) und an einem radial inneren Rand eine innere Dichtlippe (31) zur Gewährleistung der Dichtheit zum Schaft (15) aufweist,
    - eine Führung (32), die mit der inneren Dichtlippe (31) des Kolbens (16) zusammenwirkt,
    - eine Betätigungsfeder (24), die zwischen dem Schaft (15) und dem Kolben (16) angeordnet ist,
    - eine Rückstellfeder (25), die zwischen dem Ventilträger (21) und dem Schaft (15) angeordnet ist, die den Kolben (16) zu dessen Ruheposition spannt,
    dadurch gekennzeichnet, dass der Ventilträger (21) eine axiale Hülse (21c) aufweist, die den Schaft (15) in Betätigungsposition aufnimmt, wobei die axiale Hülse (21c) wenigstens eine axiale Rippe (21a) aufweist, um einen mechanischen Anschlag in Betätigungsposition der Pumpe zwischen dem unteren axialen Ende (15c) des Schafts (15) und der wenigstens einen axialen Rippe (21a) des Ventilträgers (21) zu bilden.
  2. Pumpe nach Anspruch 1, wobei die axiale Hülse (21c) wenigstens zwei axiale Rippen (21a) aufweist.
  3. Pumpe nach Anspruch 2, wobei sich vier axiale Rippen (21a) paarweise diametral gegenüberliegend um eine axiale Öffnung (21d) des Ventilträgers (21) erstrecken.
  4. Pumpe nach einem der vorhergehenden Ansprüche, wobei ein Durchtrittsloch (21b) in der axialen Hülse (21c) ausgebildet ist, um den Durchtritt der Flüssigkeit in Betätigungsposition zu gewährleisten.
  5. Pumpe nach einem der vorhergehenden Ansprüche, wobei ein Befestigungsring (10) vorgesehen ist, um den Pumpenkörper (14) auf einem Behälter unter Zwischenlage einer Kragendichtung (11) zu befestigen, wobei eine Ringdichtung (13) vorgesehen ist, um die Dichtheit des Befestigungsrings (10) zum Pumpenkörper (14) zu gewährleisten.
  6. Pumpe nach Anspruch 5, wobei in der Ruheposition ein oberer axialer Rand (16b) des Kolbens (16) dicht mit der Ringdichtung (13) zusammenwirkt.
  7. Pumpe nach einem der vorhergehenden Ansprüche, wobei ein Luftloch (35) im Pumpenkörper (14) vorgesehen ist, um das Ersetzen des von der Pumpe bei jeder Betätigung ausgestoßenen Produkts durch Luft zu ermöglichen.
  8. Vorrichtung zur Ausgabe eines Fluidprodukts, dadurch gekennzeichnet, dass sie eine Pumpe nach einem der vorhergehenden Ansprüche aufweist.
EP19842815.3A 2018-12-19 2019-12-16 Vorrichtung zur ausgabe eines fluidprodukts Active EP3898003B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1873361A FR3090417B1 (fr) 2018-12-19 2018-12-19 Dispositif de distribution de produit fluide
PCT/FR2019/053079 WO2020128269A1 (fr) 2018-12-19 2019-12-16 Dispositif de distribution de produit fluide

Publications (2)

Publication Number Publication Date
EP3898003A1 EP3898003A1 (de) 2021-10-27
EP3898003B1 true EP3898003B1 (de) 2023-02-01

Family

ID=66676701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19842815.3A Active EP3898003B1 (de) 2018-12-19 2019-12-16 Vorrichtung zur ausgabe eines fluidprodukts

Country Status (6)

Country Link
US (1) US11618045B2 (de)
EP (1) EP3898003B1 (de)
JP (1) JP7411661B2 (de)
CN (1) CN113226567B (de)
FR (1) FR3090417B1 (de)
WO (1) WO2020128269A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3090417B1 (fr) * 2018-12-19 2020-12-18 Aptar France Sas Dispositif de distribution de produit fluide
FR3116010B1 (fr) 2020-11-06 2023-12-15 Aptar France Sas Dispositif de distribution de produit fluide
FR3138655A1 (fr) 2022-08-03 2024-02-09 Aptar France Sas Dispositif de distribution de produit fluide

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2343137A1 (fr) 1976-03-01 1977-09-30 Valois Sa Pompe manuelle a piston pour distribution ou pulverisation
FR2403465A2 (fr) 1977-09-16 1979-04-13 Valois Sa Pompe manuelle a piston pour distribution ou pulverisation
JPS6032505B2 (ja) * 1979-03-19 1985-07-29 株式会社吉野工業所 液体噴霧器
FR2612890B1 (fr) * 1987-03-26 1989-12-29 Step Soc Tech Pulverisation Ensemble doseur pour produit pateux ou semi-liquide
FR2664353B1 (fr) * 1990-07-03 1992-10-09 Valois Clapet pour pulverisateur.
SI9600118A (en) * 1995-04-13 1996-10-31 Monturas Sa Precompression pump sprayer
FR2748406B1 (fr) * 1996-05-07 1998-08-28 Valois Dispositif de distribution a spray fixe
JP3889557B2 (ja) 2000-07-25 2007-03-07 株式会社吉野工業所 スプレー容器
JP3942020B2 (ja) * 2002-05-23 2007-07-11 株式会社吉野工業所 蓄圧式ポンプおよびそのモジュール
EP1565270B1 (de) * 2002-11-25 2006-04-05 Saint-Gobain Calmar, S.A. Vordruckpumpe mit verringerter höhe
WO2004054724A1 (fr) * 2002-12-13 2004-07-01 Transcontinental Partech Limited Pompe manuelle pour la distribution de liquides pulverises a etancheite optimisee
DE10259275A1 (de) * 2002-12-17 2004-07-01 Eric Schliemann Dosiervorrichtung
US7765043B2 (en) * 2003-05-12 2010-07-27 Toyota Jidosha Kabushiki Kaisha Power supply control apparatus and method
CN2772631Y (zh) * 2005-01-19 2006-04-19 苏正原 环保喷头
ITMI20060423A1 (it) * 2006-03-09 2007-09-10 Lumson Spa Pompa per permettere la erogazione manuale di una sostanza fluida racchiusa a tenuta in un contenitore
US7870977B2 (en) * 2005-04-28 2011-01-18 Meadwestvaco Calmar, Inc. Dispenser having an improved inlet valve
JP2012056633A (ja) * 2010-09-13 2012-03-22 Sulzer Mixpac Ag カートリッジピストン
FR2998198B1 (fr) * 2012-11-22 2015-05-29 Aptar France Sas Organe de distribution de produit fluide.
US9296003B2 (en) * 2014-02-26 2016-03-29 Aptar Italia S.P.A. Dispensing pump
GB2540439A (en) * 2015-07-17 2017-01-18 Alternative Packaging Solutions Llc A pump mechanism for a spray dispenser
FR3047911B1 (fr) * 2016-02-19 2020-09-25 Aptar France Sas Organe de distribution et distributeur comprenant un tel organe.
FR3090417B1 (fr) * 2018-12-19 2020-12-18 Aptar France Sas Dispositif de distribution de produit fluide

Also Published As

Publication number Publication date
JP7411661B2 (ja) 2024-01-11
JP2022515757A (ja) 2022-02-22
BR112021011803A2 (pt) 2021-08-31
CN113226567A (zh) 2021-08-06
US11618045B2 (en) 2023-04-04
WO2020128269A1 (fr) 2020-06-25
FR3090417A1 (fr) 2020-06-26
US20220062933A1 (en) 2022-03-03
FR3090417B1 (fr) 2020-12-18
EP3898003A1 (de) 2021-10-27
CN113226567B (zh) 2022-12-23

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