EP1497038B1 - Abgabepumpe für medien - Google Patents

Abgabepumpe für medien Download PDF

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Publication number
EP1497038B1
EP1497038B1 EP03740603A EP03740603A EP1497038B1 EP 1497038 B1 EP1497038 B1 EP 1497038B1 EP 03740603 A EP03740603 A EP 03740603A EP 03740603 A EP03740603 A EP 03740603A EP 1497038 B1 EP1497038 B1 EP 1497038B1
Authority
EP
European Patent Office
Prior art keywords
piston
pump
radial shoulder
lip
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.)
Expired - Lifetime
Application number
EP03740603A
Other languages
English (en)
French (fr)
Other versions
EP1497038A1 (de
Inventor
Pascal Bruna
Gérard DUCOURRET
Serge Herry
Jean-Marc Pardonge
Ludovic Petit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar France SAS
Original Assignee
Valois SAS
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
Publication of EP1497038A1 publication Critical patent/EP1497038A1/de
Application granted granted Critical
Publication of EP1497038B1 publication Critical patent/EP1497038B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
    • B05B11/1019—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element the inlet valve moving concurrently with the controlling element during whole pressure and aspiration strokes, e.g. a cage for an inlet valve ball being part of the controlling element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1038—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber
    • B05B11/104—Pressure accumulation pumps, i.e. pumps comprising a pressure accumulation chamber the outlet valve being opened by pressure after a defined accumulation stroke

Definitions

  • the present invention relates to a product dispensing pump manually operated fluid, as well as a product dispensing device fluid comprising such a pump.
  • the pumps generally comprise a body of pump in which slides a piston between a rest position and a position of distribution, said piston being moved by the user towards his position of distribution for dispensing product contained in said pump, for example in a pump chamber.
  • the pump comprises means for defining the rest position and means for defining the position piston distribution. These means are usually realized in the form stoppers which define the end positions of the piston. It is known to realize the stop defining the distribution position by means of a shoulder in the pump body, so that when the piston abuts against said shoulder, it is no longer possible to further move the piston by relative to the pump body, which defines the actuating end position or dispensing position of the piston.
  • EP-0 346 167 discloses a pump according to the preamble of the claim 1.
  • the present invention aims to provide a dispensing pump of fluid product that does not reproduce the aforementioned disadvantages.
  • the present invention thus aims to provide a pump of fluid distribution which protects the piston and avoids any degradation of performance of the pump, thus improving the service life of the pump.
  • the present invention also aims to provide such a pump of fluid dispensing that is simple and inexpensive to manufacture and to assemble.
  • the subject of the present invention is therefore a pump for dispensing fluid product with manual actuation, comprising a pump body and a piston sliding in a sealed manner in said pump body between a rest position and a dispensing position, said piston having less a lower sealing lip in sealing contact with said body of pump, said pump body having a radially inward shoulder, said pump body comprises an axial annular clearance at the level of said radial shoulder so that the active sealing part of the lower lip is out of contact with said radial shoulder in dispensing position of the piston, so that no axial force is exerted on said active part, said radial shoulder cooperating with said lower lip of the piston for forming an abutment for said piston and defining its dispensing position.
  • the lower axial edge of the lower lip of the piston is oblique, so that in the piston distribution position, the non-active part of the lower edge is in abutting contact with said radial shoulder of the body of pump, while the active sealing portion extends into said clearance annular.
  • the present invention also relates to a dispensing device fluid product comprising a pump as defined above.
  • Figure 1 schematically shows a distribution pump of fluid product to which the present invention can be applied. It is however understood that the present invention is not limited to the pump shown on the Figure 1, but can be applied to all pumps in which a piston slides in a pump body, the actuating end position, or distribution position, the piston being defined by a stop cooperating with the sealing lip of the piston.
  • the pump of FIG. 1 comprises a pump body 10 in which slides a first piston 50 connected, preferably in one piece, to a actuating rod 60, advantageously hollow and incorporating a channel 61.
  • the pump of the example of FIG. second piston 55 which slides in a portion of reduced diameter of the body of pump.
  • a pump chamber 20 is defined between these two pistons 50 and 55, as well as between an inlet valve 30 and an outlet valve 40.
  • a ferrule 80 is further fitted into the edge upper pump body 10 to define the rest position of the piston 50, and the pump shown can be assembled on a tank (not shown) at means of a fixing ring 1 which can be any, and in particular screwable, crimpable or snap-on.
  • a neck seal 5 is generally interposed between the fixing ring 1 and the upper edge of the tank (not shown).
  • a spring 70 is adapted to return automatically the pump to its rest position after each actuation.
  • Figure 2 shows the object of the present invention. It should be noted that Figure 2 is a very schematic representation, in which certain forms or distortions have been exaggerated to simplify the representation.
  • the pump body 10 comprises a radial shoulder inward 11 which defines the dispensing position of the piston 50.
  • the pump body comprises at said radial shoulder 11 a clearance 15.
  • the active sealing part 53 of the lip lower 51 is not in contact with the radial shoulder 11 but extends to inside said axial annular clearance 15, so that no force or axial stress is exerted on said active part 53. This is therefore neither deformed or damaged when the piston reaches this position of 50. This is the case both at the time of assembly, and at each actuation of the pump.
  • the lower edge 54 of the lower lip 51 of the piston 50 can be oblique so that the non-active part the lower edge 54 is in abutting contact with said radial shoulder 11 in said dispensing position, while the active sealing portion 53 is not in contact with said radial shoulder and extends inside said axial clearance 15.
  • the radial dimension and / or the depth of the annular clearance 15 can be adapted to the particular shape of the edge lower 54 of the lower lip 51 of the piston 50, as long as in the position of stop, the active part 53, that is to say that forming the seal does not enter into contact with the bottom of said axial clearance 15.
  • the present invention thus makes it possible to avoid a degradation of performance of the pump, and therefore to extend the service life of the pump, eliminating any risk of damage or deformation of the lip lower 51 of the piston 50, in particular at its active sealing portion 53.

Landscapes

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

Claims (3)

  1. Abgabepumpe für ein Fluidprodukt mit manueller Betätigung, aufweisend einen Pumpenkörper (10) und einen Kolben (50), der in dem Pumpenkörper (10) zwischen einer Ruhestellung und einer Abgabestellung dicht gleitet, wobei der Kolben (50) zumindest eine untere Dichtungslippe (51) in Dichtkontakt mit dem Pumpenkörper (10) umfasst, wobei der Pumpenkörper (10) eine einwärts verlaufende radiale Schulter (11) umfasst, wobei der Pumpenkörper (10) eine axiale ringförmige Ausnehmung (15) auf Höhe der radialen Schulter (11) derart aufweist, dass der aktive Dichtungsteil (53) der unteren Lippe (51) keinerlei Kontakt mit der radialen Schulter (11) in der Abgabeposition des Kolbens (50) hat, so dass keinerlei axiale Kraft auf den aktiven Teil (53) ausgeübt wird, dadurch gekennzeichnet, dass die radiale Schulter (11) mit der unteren Dichtungslippe (51) des Kolbens (50) zur Bildung eines Anschlags für den Kolben (50) und zur Festlegung seiner Aufgabestellung zusammenwirkt.
  2. Pumpe nach Anspruch 1, wobei der untere axiale Rand (54) der unteren Lippe (51) des Kolbens (50) schräg verläuft, so dass in der Abgabestellung des Kolbens (50) der nicht aktive Teil (54) des Randes sich im Anlagekontakt mit der radialen Schulter (11) des Pumpenkörpers (10) befindet, während der aktive Dichtungsteil (53) sich in der ringförmigen Ausnehmung (15) erstreckt.
  3. Vorrichtung zur Abgabe eines Fluidpodukts, dadurch gekennzeichnet, dass sie eine Pumpe nach einem der vorangehenden Ansprüche umfasst.
EP03740603A 2002-04-17 2003-04-14 Abgabepumpe für medien Expired - Lifetime EP1497038B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0204811 2002-04-17
FR0204811A FR2838785B1 (fr) 2002-04-17 2002-04-17 Pompe de distribution de produit fluide
PCT/FR2003/001181 WO2003086649A1 (fr) 2002-04-17 2003-04-14 Pompe de distribution de produit fluide

Publications (2)

Publication Number Publication Date
EP1497038A1 EP1497038A1 (de) 2005-01-19
EP1497038B1 true EP1497038B1 (de) 2005-10-26

Family

ID=28686137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03740603A Expired - Lifetime EP1497038B1 (de) 2002-04-17 2003-04-14 Abgabepumpe für medien

Country Status (7)

Country Link
EP (1) EP1497038B1 (de)
JP (1) JP2005527354A (de)
CN (1) CN1317082C (de)
AU (1) AU2003262155A1 (de)
DE (1) DE60302057T2 (de)
FR (1) FR2838785B1 (de)
WO (1) WO2003086649A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2913731B1 (fr) * 2007-03-12 2013-08-09 Valois Sas Pompe de distribution de produit fluide et distributeur comportant une telle pompe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2631393B1 (fr) * 1988-05-10 1993-09-17 Lindal Verpackungstech Gmbh Pompe a precompression pour la diffusion d'un liquide
FR2674747B1 (fr) * 1991-04-05 1993-07-30 Step Soc Tech Pulverisation Dispositif distributeur de gouttes de petit volume, notamment pour soins ophtalmologiques.
US6045008A (en) * 1998-04-30 2000-04-04 Calmar-Monturas, S.A. Fluid pump dispenser

Also Published As

Publication number Publication date
DE60302057D1 (de) 2005-12-01
AU2003262155A1 (en) 2003-10-27
FR2838785B1 (fr) 2005-09-09
FR2838785A1 (fr) 2003-10-24
DE60302057T2 (de) 2006-08-03
EP1497038A1 (de) 2005-01-19
WO2003086649A1 (fr) 2003-10-23
CN1317082C (zh) 2007-05-23
JP2005527354A (ja) 2005-09-15
CN1646232A (zh) 2005-07-27

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