WO2003086649A1 - Pompe de distribution de produit fluide - Google Patents
Pompe de distribution de produit fluide Download PDFInfo
- Publication number
- WO2003086649A1 WO2003086649A1 PCT/FR2003/001181 FR0301181W WO03086649A1 WO 2003086649 A1 WO2003086649 A1 WO 2003086649A1 FR 0301181 W FR0301181 W FR 0301181W WO 03086649 A1 WO03086649 A1 WO 03086649A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- pump
- pump body
- radial shoulder
- distribution
- 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.)
- Ceased
Links
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 fluid dispenser pump with manual actuation, as well as a fluid dispenser device comprising such a pump.
- pumps generally comprise a pump body in which a piston slides between a rest position and a dispensing position, said piston being moved by the user towards its dispensing position to dispense the 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 distribution position of the piston. These means are generally produced in the form of stops which define the positions of the ends of the piston. It is known to produce the stop defining the dispensing 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 move the piston further relative to the pump body, which defines the actuating end position or piston distribution position.
- this implementation has a drawback.
- the sealing lip of the piston, and in particular the active part of this sealing lip that is to say the part which forms the sealed contact between the lip and the pump body, abuts against a radial shoulder, so that this active part is subjected to axial stresses or forces.
- this can lead to deformation or damage to the sealing lip of the piston, and in particular of its active sealing part, which may have the consequence of degrading the performance of the pump.
- the piston is moved to its dispensing position by the assembly machine. This movement can be carried out relatively violently, and in any case much more strongly than when the pump is used by a user.
- the object of the present invention is to provide a pump for dispensing a fluid product which does not have the abovementioned drawbacks.
- the present invention thus aims to provide a fluid dispensing pump which protects the piston and prevents any deterioration in the performance of the pump, thereby improving the life of the latter.
- the present invention also aims to provide such a fluid dispensing pump which is simple and inexpensive to manufacture and assemble.
- the present invention therefore relates to a fluid dispensing pump with manual actuation, comprising a pump body and a piston sliding in leaktight manner in said pump body between a rest position and a distribution position, said piston comprising at at least one lower sealing lip in leaktight contact with said pump body, said pump body having an inward radial shoulder cooperating with said lower piston lip to form a stop for said piston and define its dispensing position, characterized in that said pump body has an axial annular clearance at said radial shoulder so that the active sealing portion of the lower lip is out of contact with said radial shoulder in the piston distribution position, so that no axial force is exerted on said active part.
- 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 abutment contact with said radial shoulder of the pump body, while the active sealing part extends in said annular clearance.
- the present invention also relates to a device for dispensing a fluid product comprising a pump as defined above.
- Figure 1 schematically shows a fluid dispenser pump to which the present invention can be applied.
- the present invention is not limited to the pump shown in FIG. 1, but can be applied to all pumps in which a piston slides in a pump body, the actuating end position, or dispensing 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 a single piece, to an actuating rod 60, advantageously hollow and incorporating an expulsion channel 61.
- the pump of the The example of FIG. 1 further comprises a second piston 55 which slides in a part of reduced diameter of the pump body.
- 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.
- the second piston 55 moves faster than the first piston 50, due to the differences in diameter, and the second piston 55 is adapted to mechanically open the outlet valve 40 at the end of the actuation stroke of the piston 50.
- a ferrule 80 is further fitted in the upper edge of the pump body 10 to define the rest position of the piston 50, and the pump shown can be assembled on a reservoir (not shown) by means of a fixing ring 1 which can be any, and in particular screwable, crimpable or snap-on.
- a neck gasket 5 is generally interposed between the fixing ring 1 and the upper edge of the reservoir (not shown).
- a spring 70 is adapted to automatically return the pump to its rest position after each actuation.
- Figure 2 shows the object of the present invention. It should be noted that FIG. 2 is a very schematic representation, in which certain shapes or deformations have been exaggerated to simplify the representation.
- the pump body 10 has an inward radial shoulder 11 which defines the distribution position of the piston 50.
- the pump body comprises at said radial shoulder 11 an axial annular clearance 15.
- the lower edge 54 of the lower lip 51 of the piston 50 can be oblique so that the non-active part of the lower edge 54 is in abutment contact with said radial shoulder 11 in said dispensing position , while the active sealing part 53 is not in contact with said radial shoulder and extends inside said axial clearance 15.
- the radial dimension and / or the depth of said annular clearance 15 can be adapted to the particular shape of the lower edge 54 of the lower lip 51 of the piston 50, as long as in the stop position, the active part 53, that is to say the one forming the seal, does not come into contact with the bottom of said clearance axial 15.
- the present invention therefore makes it possible to avoid a deterioration in the performance of the pump, and therefore to lengthen the life of the latter, by eliminating any risk of damage or deformation of the lower lip 51 of the piston 50, in particular at its active sealing part 53.
Landscapes
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003583648A JP2005527354A (ja) | 2002-04-17 | 2003-04-14 | 流体ディスペンサポンプ |
| AU2003262155A AU2003262155A1 (en) | 2002-04-17 | 2003-04-14 | Distribution pump for a liquid product |
| EP03740603A EP1497038B1 (fr) | 2002-04-17 | 2003-04-14 | Pompe de distribution de produit fluide |
| DE60302057T DE60302057T2 (de) | 2002-04-17 | 2003-04-14 | Abgabepumpe für medien |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0204811A FR2838785B1 (fr) | 2002-04-17 | 2002-04-17 | Pompe de distribution de produit fluide |
| FR02/04811 | 2002-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003086649A1 true WO2003086649A1 (fr) | 2003-10-23 |
Family
ID=28686137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2003/001181 Ceased WO2003086649A1 (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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0346167A1 (fr) * | 1988-05-10 | 1989-12-13 | Lindal Verpackungstechnik Gmbh | Pompe à précompression pour la diffusion d'un liquide |
| US5207659A (en) * | 1991-04-05 | 1993-05-04 | Societe Technique De Pulverisation - S.T.E.P. | Device for dispensing drops of small volume, in particular for ophthalmological care |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 not_active Ceased
- 2003-04-14 AU AU2003262155A patent/AU2003262155A1/en not_active Abandoned
- 2003-04-14 CN CNB038085615A patent/CN1317082C/zh not_active Expired - Fee Related
- 2003-04-14 DE DE60302057T patent/DE60302057T2/de not_active Expired - Lifetime
- 2003-04-14 JP JP2003583648A patent/JP2005527354A/ja not_active Withdrawn
- 2003-04-14 EP EP03740603A patent/EP1497038B1/fr not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0346167A1 (fr) * | 1988-05-10 | 1989-12-13 | Lindal Verpackungstechnik Gmbh | Pompe à précompression pour la diffusion d'un liquide |
| US5207659A (en) * | 1991-04-05 | 1993-05-04 | Societe Technique De Pulverisation - S.T.E.P. | Device for dispensing drops of small volume, in particular for ophthalmological care |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1497038A1 (fr) | 2005-01-19 |
| DE60302057D1 (de) | 2005-12-01 |
| AU2003262155A1 (en) | 2003-10-27 |
| JP2005527354A (ja) | 2005-09-15 |
| DE60302057T2 (de) | 2006-08-03 |
| EP1497038B1 (fr) | 2005-10-26 |
| CN1646232A (zh) | 2005-07-27 |
| CN1317082C (zh) | 2007-05-23 |
| FR2838785A1 (fr) | 2003-10-24 |
| FR2838785B1 (fr) | 2005-09-09 |
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