EP1497038B1 - Pompe de distribution de produit fluide - Google Patents
Pompe de distribution de produit fluide Download PDFInfo
- 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
Links
Images
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)
Abstract
Description
- la figure 1 est une vue schématique en section transversale d'une pompe de distribution de produit fluide à laquelle s'adapte la présente invention ; et
- la figure 2 est une vue schématique agrandie d'une partie de la figure 1, montrant un mode de réalisation avantageux de la présente invention.
Claims (3)
- Pompe de distribution de produit fluide à actionnement manuel, comportant un corps de pompe (10) et un piston (50) coulissant de manière étanche dans ledit corps de pompe (10) entre une position de repos et une position de distribution, ledit piston (50) comportant au moins une lèvre d'étanchéité inférieure (51) en contact étanche avec ledit corps de pompe (10), ledit corps de pompe (10) comportant un épaulement radial vers l'intérieur (11), ledit corps de pompe (10) comportant un dégagement annulaire axial (15) au niveau dudit épaulement radial (11) de sorte que la partie active d'étanchéité (53) de la lèvre inférieure (51) est hors de tout contact avec ledit épaulement radial (11) en position de distribution du piston (50), de sorte qu'aucune force axiale ne s'exerce sur ladite partie active (53), caractérisée en ce que ledit épaulement radial (11) coopère avec ladite lèvre inférieure (51) du piston (50) pour former une butée pour ledit piston (50) et définir sa position de distribution.
- Pompe selon la revendication 1, dans laquelle le bord axial inférieur (54) de la lèvre inférieure (51) du piston (50) est oblique, de sorte qu'en position de distribution du piston (50), la partie non-active du bord inférieur (54) est en contact de butée avec ledit épaulement radial (11) du corps de pompe (10), alors que la partie active d'étanchéité (53) s'étend dans ledit dégagement annulaire (15).
- Dispositif de distribution de produit fluide, caractérisé en ce qu'il comporte une pompe selon l'une quelconque des revendications précédentes.
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 (fr) | 2005-01-19 |
EP1497038B1 true EP1497038B1 (fr) | 2005-10-26 |
Family
ID=28686137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03740603A Expired - Lifetime EP1497038B1 (fr) | 2002-04-17 | 2003-04-14 | Pompe de distribution de produit fluide |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1497038B1 (fr) |
JP (1) | JP2005527354A (fr) |
CN (1) | CN1317082C (fr) |
AU (1) | AU2003262155A1 (fr) |
DE (1) | DE60302057T2 (fr) |
FR (1) | FR2838785B1 (fr) |
WO (1) | WO2003086649A1 (fr) |
Families Citing this family (1)
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)
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 |
-
2002
- 2002-04-17 FR FR0204811A patent/FR2838785B1/fr not_active Expired - Lifetime
-
2003
- 2003-04-14 WO PCT/FR2003/001181 patent/WO2003086649A1/fr active IP Right Grant
- 2003-04-14 JP JP2003583648A patent/JP2005527354A/ja not_active Withdrawn
- 2003-04-14 DE DE60302057T patent/DE60302057T2/de not_active Expired - Lifetime
- 2003-04-14 CN CNB038085615A patent/CN1317082C/zh not_active Expired - Fee Related
- 2003-04-14 AU AU2003262155A patent/AU2003262155A1/en not_active Abandoned
- 2003-04-14 EP EP03740603A patent/EP1497038B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FR2838785A1 (fr) | 2003-10-24 |
EP1497038A1 (fr) | 2005-01-19 |
CN1646232A (zh) | 2005-07-27 |
CN1317082C (zh) | 2007-05-23 |
DE60302057D1 (de) | 2005-12-01 |
AU2003262155A1 (en) | 2003-10-27 |
DE60302057T2 (de) | 2006-08-03 |
JP2005527354A (ja) | 2005-09-15 |
FR2838785B1 (fr) | 2005-09-09 |
WO2003086649A1 (fr) | 2003-10-23 |
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